1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * tiny vi.c: A small 'vi' clone
|
---|
4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
|
---|
5 | *
|
---|
6 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
7 | */
|
---|
8 |
|
---|
9 | /*
|
---|
10 | * Things To Do:
|
---|
11 | * EXINIT
|
---|
12 | * $HOME/.exrc and ./.exrc
|
---|
13 | * add magic to search /foo.*bar
|
---|
14 | * add :help command
|
---|
15 | * :map macros
|
---|
16 | * if mark[] values were line numbers rather than pointers
|
---|
17 | * it would be easier to change the mark when add/delete lines
|
---|
18 | * More intelligence in refresh()
|
---|
19 | * ":r !cmd" and "!cmd" to filter text through an external command
|
---|
20 | * A true "undo" facility
|
---|
21 | * An "ex" line oriented mode- maybe using "cmdedit"
|
---|
22 | */
|
---|
23 |
|
---|
24 | //config:config VI
|
---|
25 | //config: bool "vi"
|
---|
26 | //config: default y
|
---|
27 | //config: help
|
---|
28 | //config: 'vi' is a text editor. More specifically, it is the One True
|
---|
29 | //config: text editor <grin>. It does, however, have a rather steep
|
---|
30 | //config: learning curve. If you are not already comfortable with 'vi'
|
---|
31 | //config: you may wish to use something else.
|
---|
32 | //config:
|
---|
33 | //config:config FEATURE_VI_MAX_LEN
|
---|
34 | //config: int "Maximum screen width in vi"
|
---|
35 | //config: range 256 16384
|
---|
36 | //config: default 4096
|
---|
37 | //config: depends on VI
|
---|
38 | //config: help
|
---|
39 | //config: Contrary to what you may think, this is not eating much.
|
---|
40 | //config: Make it smaller than 4k only if you are very limited on memory.
|
---|
41 | //config:
|
---|
42 | //config:config FEATURE_VI_8BIT
|
---|
43 | //config: bool "Allow vi to display 8-bit chars (otherwise shows dots)"
|
---|
44 | //config: default n
|
---|
45 | //config: depends on VI
|
---|
46 | //config: help
|
---|
47 | //config: If your terminal can display characters with high bit set,
|
---|
48 | //config: you may want to enable this. Note: vi is not Unicode-capable.
|
---|
49 | //config: If your terminal combines several 8-bit bytes into one character
|
---|
50 | //config: (as in Unicode mode), this will not work properly.
|
---|
51 | //config:
|
---|
52 | //config:config FEATURE_VI_COLON
|
---|
53 | //config: bool "Enable \":\" colon commands (no \"ex\" mode)"
|
---|
54 | //config: default y
|
---|
55 | //config: depends on VI
|
---|
56 | //config: help
|
---|
57 | //config: Enable a limited set of colon commands for vi. This does not
|
---|
58 | //config: provide an "ex" mode.
|
---|
59 | //config:
|
---|
60 | //config:config FEATURE_VI_YANKMARK
|
---|
61 | //config: bool "Enable yank/put commands and mark cmds"
|
---|
62 | //config: default y
|
---|
63 | //config: depends on VI
|
---|
64 | //config: help
|
---|
65 | //config: This will enable you to use yank and put, as well as mark in
|
---|
66 | //config: busybox vi.
|
---|
67 | //config:
|
---|
68 | //config:config FEATURE_VI_SEARCH
|
---|
69 | //config: bool "Enable search and replace cmds"
|
---|
70 | //config: default y
|
---|
71 | //config: depends on VI
|
---|
72 | //config: help
|
---|
73 | //config: Select this if you wish to be able to do search and replace in
|
---|
74 | //config: busybox vi.
|
---|
75 | //config:
|
---|
76 | //config:config FEATURE_VI_REGEX_SEARCH
|
---|
77 | //config: bool "Enable regex in search and replace"
|
---|
78 | //config: default n # Uses GNU regex, which may be unavailable. FIXME
|
---|
79 | //config: depends on FEATURE_VI_SEARCH
|
---|
80 | //config: help
|
---|
81 | //config: Use extended regex search.
|
---|
82 | //config:
|
---|
83 | //config:config FEATURE_VI_USE_SIGNALS
|
---|
84 | //config: bool "Catch signals"
|
---|
85 | //config: default y
|
---|
86 | //config: depends on VI
|
---|
87 | //config: help
|
---|
88 | //config: Selecting this option will make busybox vi signal aware. This will
|
---|
89 | //config: make busybox vi support SIGWINCH to deal with Window Changes, catch
|
---|
90 | //config: Ctrl-Z and Ctrl-C and alarms.
|
---|
91 | //config:
|
---|
92 | //config:config FEATURE_VI_DOT_CMD
|
---|
93 | //config: bool "Remember previous cmd and \".\" cmd"
|
---|
94 | //config: default y
|
---|
95 | //config: depends on VI
|
---|
96 | //config: help
|
---|
97 | //config: Make busybox vi remember the last command and be able to repeat it.
|
---|
98 | //config:
|
---|
99 | //config:config FEATURE_VI_READONLY
|
---|
100 | //config: bool "Enable -R option and \"view\" mode"
|
---|
101 | //config: default y
|
---|
102 | //config: depends on VI
|
---|
103 | //config: help
|
---|
104 | //config: Enable the read-only command line option, which allows the user to
|
---|
105 | //config: open a file in read-only mode.
|
---|
106 | //config:
|
---|
107 | //config:config FEATURE_VI_SETOPTS
|
---|
108 | //config: bool "Enable set-able options, ai ic showmatch"
|
---|
109 | //config: default y
|
---|
110 | //config: depends on VI
|
---|
111 | //config: help
|
---|
112 | //config: Enable the editor to set some (ai, ic, showmatch) options.
|
---|
113 | //config:
|
---|
114 | //config:config FEATURE_VI_SET
|
---|
115 | //config: bool "Support for :set"
|
---|
116 | //config: default y
|
---|
117 | //config: depends on VI
|
---|
118 | //config: help
|
---|
119 | //config: Support for ":set".
|
---|
120 | //config:
|
---|
121 | //config:config FEATURE_VI_WIN_RESIZE
|
---|
122 | //config: bool "Handle window resize"
|
---|
123 | //config: default y
|
---|
124 | //config: depends on VI
|
---|
125 | //config: help
|
---|
126 | //config: Make busybox vi behave nicely with terminals that get resized.
|
---|
127 | //config:
|
---|
128 | //config:config FEATURE_VI_ASK_TERMINAL
|
---|
129 | //config: bool "Use 'tell me cursor position' ESC sequence to measure window"
|
---|
130 | //config: default y
|
---|
131 | //config: depends on VI
|
---|
132 | //config: help
|
---|
133 | //config: If terminal size can't be retrieved and $LINES/$COLUMNS are not set,
|
---|
134 | //config: this option makes vi perform a last-ditch effort to find it:
|
---|
135 | //config: position cursor to 999,999 and ask terminal to report real
|
---|
136 | //config: cursor position using "ESC [ 6 n" escape sequence, then read stdin.
|
---|
137 | //config:
|
---|
138 | //config: This is not clean but helps a lot on serial lines and such.
|
---|
139 |
|
---|
140 | //applet:IF_VI(APPLET(vi, BB_DIR_BIN, BB_SUID_DROP))
|
---|
141 |
|
---|
142 | //kbuild:lib-$(CONFIG_VI) += vi.o
|
---|
143 |
|
---|
144 | //usage:#define vi_trivial_usage
|
---|
145 | //usage: "[OPTIONS] [FILE]..."
|
---|
146 | //usage:#define vi_full_usage "\n\n"
|
---|
147 | //usage: "Edit FILE\n"
|
---|
148 | //usage: IF_FEATURE_VI_COLON(
|
---|
149 | //usage: "\n -c CMD Initial command to run ($EXINIT also available)"
|
---|
150 | //usage: )
|
---|
151 | //usage: IF_FEATURE_VI_READONLY(
|
---|
152 | //usage: "\n -R Read-only"
|
---|
153 | //usage: )
|
---|
154 | //usage: "\n -H List available features"
|
---|
155 |
|
---|
156 | #include "libbb.h"
|
---|
157 | /* Should be after libbb.h: on some systems regex.h needs sys/types.h: */
|
---|
158 | #if ENABLE_FEATURE_VI_REGEX_SEARCH
|
---|
159 | # include <regex.h>
|
---|
160 | #endif
|
---|
161 |
|
---|
162 | /* the CRASHME code is unmaintained, and doesn't currently build */
|
---|
163 | #define ENABLE_FEATURE_VI_CRASHME 0
|
---|
164 |
|
---|
165 |
|
---|
166 | #if ENABLE_LOCALE_SUPPORT
|
---|
167 |
|
---|
168 | #if ENABLE_FEATURE_VI_8BIT
|
---|
169 | //FIXME: this does not work properly for Unicode anyway
|
---|
170 | # define Isprint(c) (isprint)(c)
|
---|
171 | #else
|
---|
172 | # define Isprint(c) isprint_asciionly(c)
|
---|
173 | #endif
|
---|
174 |
|
---|
175 | #else
|
---|
176 |
|
---|
177 | /* 0x9b is Meta-ESC */
|
---|
178 | #if ENABLE_FEATURE_VI_8BIT
|
---|
179 | # define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
|
---|
180 | #else
|
---|
181 | # define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f)
|
---|
182 | #endif
|
---|
183 |
|
---|
184 | #endif
|
---|
185 |
|
---|
186 |
|
---|
187 | enum {
|
---|
188 | MAX_TABSTOP = 32, // sanity limit
|
---|
189 | // User input len. Need not be extra big.
|
---|
190 | // Lines in file being edited *can* be bigger than this.
|
---|
191 | MAX_INPUT_LEN = 128,
|
---|
192 | // Sanity limits. We have only one buffer of this size.
|
---|
193 | MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN,
|
---|
194 | MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
|
---|
195 | };
|
---|
196 |
|
---|
197 | /* VT102 ESC sequences.
|
---|
198 | * See "Xterm Control Sequences"
|
---|
199 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
|
---|
200 | */
|
---|
201 | /* Inverse/Normal text */
|
---|
202 | #define ESC_BOLD_TEXT "\033[7m"
|
---|
203 | #define ESC_NORM_TEXT "\033[0m"
|
---|
204 | /* Bell */
|
---|
205 | #define ESC_BELL "\007"
|
---|
206 | /* Clear-to-end-of-line */
|
---|
207 | #define ESC_CLEAR2EOL "\033[K"
|
---|
208 | /* Clear-to-end-of-screen.
|
---|
209 | * (We use default param here.
|
---|
210 | * Full sequence is "ESC [ <num> J",
|
---|
211 | * <num> is 0/1/2 = "erase below/above/all".)
|
---|
212 | */
|
---|
213 | #define ESC_CLEAR2EOS "\033[J"
|
---|
214 | /* Cursor to given coordinate (1,1: top left) */
|
---|
215 | #define ESC_SET_CURSOR_POS "\033[%u;%uH"
|
---|
216 | //UNUSED
|
---|
217 | ///* Cursor up and down */
|
---|
218 | //#define ESC_CURSOR_UP "\033[A"
|
---|
219 | //#define ESC_CURSOR_DOWN "\n"
|
---|
220 |
|
---|
221 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
|
---|
222 | // cmds modifying text[]
|
---|
223 | // vda: removed "aAiIs" as they switch us into insert mode
|
---|
224 | // and remembering input for replay after them makes no sense
|
---|
225 | static const char modifying_cmds[] = "cCdDJoOpPrRxX<>~";
|
---|
226 | #endif
|
---|
227 |
|
---|
228 | enum {
|
---|
229 | YANKONLY = FALSE,
|
---|
230 | YANKDEL = TRUE,
|
---|
231 | FORWARD = 1, // code depends on "1" for array index
|
---|
232 | BACK = -1, // code depends on "-1" for array index
|
---|
233 | LIMITED = 0, // how much of text[] in char_search
|
---|
234 | FULL = 1, // how much of text[] in char_search
|
---|
235 |
|
---|
236 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
|
---|
237 | S_TO_WS = 2, // used in skip_thing() for moving "dot"
|
---|
238 | S_OVER_WS = 3, // used in skip_thing() for moving "dot"
|
---|
239 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
|
---|
240 | S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
|
---|
241 | };
|
---|
242 |
|
---|
243 |
|
---|
244 | /* vi.c expects chars to be unsigned. */
|
---|
245 | /* busybox build system provides that, but it's better */
|
---|
246 | /* to audit and fix the source */
|
---|
247 |
|
---|
248 | struct globals {
|
---|
249 | /* many references - keep near the top of globals */
|
---|
250 | char *text, *end; // pointers to the user data in memory
|
---|
251 | char *dot; // where all the action takes place
|
---|
252 | int text_size; // size of the allocated buffer
|
---|
253 |
|
---|
254 | /* the rest */
|
---|
255 | smallint vi_setops;
|
---|
256 | #define VI_AUTOINDENT 1
|
---|
257 | #define VI_SHOWMATCH 2
|
---|
258 | #define VI_IGNORECASE 4
|
---|
259 | #define VI_ERR_METHOD 8
|
---|
260 | #define autoindent (vi_setops & VI_AUTOINDENT)
|
---|
261 | #define showmatch (vi_setops & VI_SHOWMATCH )
|
---|
262 | #define ignorecase (vi_setops & VI_IGNORECASE)
|
---|
263 | /* indicate error with beep or flash */
|
---|
264 | #define err_method (vi_setops & VI_ERR_METHOD)
|
---|
265 |
|
---|
266 | #if ENABLE_FEATURE_VI_READONLY
|
---|
267 | smallint readonly_mode;
|
---|
268 | #define SET_READONLY_FILE(flags) ((flags) |= 0x01)
|
---|
269 | #define SET_READONLY_MODE(flags) ((flags) |= 0x02)
|
---|
270 | #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
|
---|
271 | #else
|
---|
272 | #define SET_READONLY_FILE(flags) ((void)0)
|
---|
273 | #define SET_READONLY_MODE(flags) ((void)0)
|
---|
274 | #define UNSET_READONLY_FILE(flags) ((void)0)
|
---|
275 | #endif
|
---|
276 |
|
---|
277 | smallint editing; // >0 while we are editing a file
|
---|
278 | // [code audit says "can be 0, 1 or 2 only"]
|
---|
279 | smallint cmd_mode; // 0=command 1=insert 2=replace
|
---|
280 | int file_modified; // buffer contents changed (counter, not flag!)
|
---|
281 | int last_file_modified; // = -1;
|
---|
282 | int save_argc; // how many file names on cmd line
|
---|
283 | int cmdcnt; // repetition count
|
---|
284 | unsigned rows, columns; // the terminal screen is this size
|
---|
285 | #if ENABLE_FEATURE_VI_ASK_TERMINAL
|
---|
286 | int get_rowcol_error;
|
---|
287 | #endif
|
---|
288 | int crow, ccol; // cursor is on Crow x Ccol
|
---|
289 | int offset; // chars scrolled off the screen to the left
|
---|
290 | int have_status_msg; // is default edit status needed?
|
---|
291 | // [don't make smallint!]
|
---|
292 | int last_status_cksum; // hash of current status line
|
---|
293 | char *current_filename;
|
---|
294 | char *screenbegin; // index into text[], of top line on the screen
|
---|
295 | char *screen; // pointer to the virtual screen buffer
|
---|
296 | int screensize; // and its size
|
---|
297 | int tabstop;
|
---|
298 | int last_forward_char; // last char searched for with 'f' (int because of Unicode)
|
---|
299 | char erase_char; // the users erase character
|
---|
300 | char last_input_char; // last char read from user
|
---|
301 |
|
---|
302 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
303 | smallint adding2q; // are we currently adding user input to q
|
---|
304 | int lmc_len; // length of last_modifying_cmd
|
---|
305 | char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
|
---|
306 | #endif
|
---|
307 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
---|
308 | int my_pid;
|
---|
309 | #endif
|
---|
310 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
311 | char *last_search_pattern; // last pattern from a '/' or '?' search
|
---|
312 | #endif
|
---|
313 |
|
---|
314 | /* former statics */
|
---|
315 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
316 | char *edit_file__cur_line;
|
---|
317 | #endif
|
---|
318 | int refresh__old_offset;
|
---|
319 | int format_edit_status__tot;
|
---|
320 |
|
---|
321 | /* a few references only */
|
---|
322 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
323 | int YDreg, Ureg; // default delete register and orig line for "U"
|
---|
324 | char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
|
---|
325 | char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
|
---|
326 | char *context_start, *context_end;
|
---|
327 | #endif
|
---|
328 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
329 | sigjmp_buf restart; // catch_sig()
|
---|
330 | #endif
|
---|
331 | struct termios term_orig, term_vi; // remember what the cooked mode was
|
---|
332 | #if ENABLE_FEATURE_VI_COLON
|
---|
333 | char *initial_cmds[3]; // currently 2 entries, NULL terminated
|
---|
334 | #endif
|
---|
335 | // Should be just enough to hold a key sequence,
|
---|
336 | // but CRASHME mode uses it as generated command buffer too
|
---|
337 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
338 | char readbuffer[128];
|
---|
339 | #else
|
---|
340 | char readbuffer[KEYCODE_BUFFER_SIZE];
|
---|
341 | #endif
|
---|
342 | #define STATUS_BUFFER_LEN 200
|
---|
343 | char status_buffer[STATUS_BUFFER_LEN]; // messages to the user
|
---|
344 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
345 | char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "."
|
---|
346 | #endif
|
---|
347 | char get_input_line__buf[MAX_INPUT_LEN]; /* former static */
|
---|
348 |
|
---|
349 | char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2];
|
---|
350 | };
|
---|
351 | #define G (*ptr_to_globals)
|
---|
352 | #define text (G.text )
|
---|
353 | #define text_size (G.text_size )
|
---|
354 | #define end (G.end )
|
---|
355 | #define dot (G.dot )
|
---|
356 | #define reg (G.reg )
|
---|
357 |
|
---|
358 | #define vi_setops (G.vi_setops )
|
---|
359 | #define editing (G.editing )
|
---|
360 | #define cmd_mode (G.cmd_mode )
|
---|
361 | #define file_modified (G.file_modified )
|
---|
362 | #define last_file_modified (G.last_file_modified )
|
---|
363 | #define save_argc (G.save_argc )
|
---|
364 | #define cmdcnt (G.cmdcnt )
|
---|
365 | #define rows (G.rows )
|
---|
366 | #define columns (G.columns )
|
---|
367 | #define crow (G.crow )
|
---|
368 | #define ccol (G.ccol )
|
---|
369 | #define offset (G.offset )
|
---|
370 | #define status_buffer (G.status_buffer )
|
---|
371 | #define have_status_msg (G.have_status_msg )
|
---|
372 | #define last_status_cksum (G.last_status_cksum )
|
---|
373 | #define current_filename (G.current_filename )
|
---|
374 | #define screen (G.screen )
|
---|
375 | #define screensize (G.screensize )
|
---|
376 | #define screenbegin (G.screenbegin )
|
---|
377 | #define tabstop (G.tabstop )
|
---|
378 | #define last_forward_char (G.last_forward_char )
|
---|
379 | #define erase_char (G.erase_char )
|
---|
380 | #define last_input_char (G.last_input_char )
|
---|
381 | #if ENABLE_FEATURE_VI_READONLY
|
---|
382 | #define readonly_mode (G.readonly_mode )
|
---|
383 | #else
|
---|
384 | #define readonly_mode 0
|
---|
385 | #endif
|
---|
386 | #define adding2q (G.adding2q )
|
---|
387 | #define lmc_len (G.lmc_len )
|
---|
388 | #define ioq (G.ioq )
|
---|
389 | #define ioq_start (G.ioq_start )
|
---|
390 | #define my_pid (G.my_pid )
|
---|
391 | #define last_search_pattern (G.last_search_pattern)
|
---|
392 |
|
---|
393 | #define edit_file__cur_line (G.edit_file__cur_line)
|
---|
394 | #define refresh__old_offset (G.refresh__old_offset)
|
---|
395 | #define format_edit_status__tot (G.format_edit_status__tot)
|
---|
396 |
|
---|
397 | #define YDreg (G.YDreg )
|
---|
398 | #define Ureg (G.Ureg )
|
---|
399 | #define mark (G.mark )
|
---|
400 | #define context_start (G.context_start )
|
---|
401 | #define context_end (G.context_end )
|
---|
402 | #define restart (G.restart )
|
---|
403 | #define term_orig (G.term_orig )
|
---|
404 | #define term_vi (G.term_vi )
|
---|
405 | #define initial_cmds (G.initial_cmds )
|
---|
406 | #define readbuffer (G.readbuffer )
|
---|
407 | #define scr_out_buf (G.scr_out_buf )
|
---|
408 | #define last_modifying_cmd (G.last_modifying_cmd )
|
---|
409 | #define get_input_line__buf (G.get_input_line__buf)
|
---|
410 |
|
---|
411 | #define INIT_G() do { \
|
---|
412 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
---|
413 | last_file_modified = -1; \
|
---|
414 | /* "" but has space for 2 chars: */ \
|
---|
415 | IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \
|
---|
416 | } while (0)
|
---|
417 |
|
---|
418 |
|
---|
419 | static int init_text_buffer(char *); // init from file or create new
|
---|
420 | static void edit_file(char *); // edit one file
|
---|
421 | static void do_cmd(int); // execute a command
|
---|
422 | static int next_tabstop(int);
|
---|
423 | static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
|
---|
424 | static char *begin_line(char *); // return pointer to cur line B-o-l
|
---|
425 | static char *end_line(char *); // return pointer to cur line E-o-l
|
---|
426 | static char *prev_line(char *); // return pointer to prev line B-o-l
|
---|
427 | static char *next_line(char *); // return pointer to next line B-o-l
|
---|
428 | static char *end_screen(void); // get pointer to last char on screen
|
---|
429 | static int count_lines(char *, char *); // count line from start to stop
|
---|
430 | static char *find_line(int); // find begining of line #li
|
---|
431 | static char *move_to_col(char *, int); // move "p" to column l
|
---|
432 | static void dot_left(void); // move dot left- dont leave line
|
---|
433 | static void dot_right(void); // move dot right- dont leave line
|
---|
434 | static void dot_begin(void); // move dot to B-o-l
|
---|
435 | static void dot_end(void); // move dot to E-o-l
|
---|
436 | static void dot_next(void); // move dot to next line B-o-l
|
---|
437 | static void dot_prev(void); // move dot to prev line B-o-l
|
---|
438 | static void dot_scroll(int, int); // move the screen up or down
|
---|
439 | static void dot_skip_over_ws(void); // move dot pat WS
|
---|
440 | static void dot_delete(void); // delete the char at 'dot'
|
---|
441 | static char *bound_dot(char *); // make sure text[0] <= P < "end"
|
---|
442 | static char *new_screen(int, int); // malloc virtual screen memory
|
---|
443 | static char *char_insert(char *, char); // insert the char c at 'p'
|
---|
444 | // might reallocate text[]! use p += stupid_insert(p, ...),
|
---|
445 | // and be careful to not use pointers into potentially freed text[]!
|
---|
446 | static uintptr_t stupid_insert(char *, char); // stupidly insert the char c at 'p'
|
---|
447 | static int find_range(char **, char **, char); // return pointers for an object
|
---|
448 | static int st_test(char *, int, int, char *); // helper for skip_thing()
|
---|
449 | static char *skip_thing(char *, int, int, int); // skip some object
|
---|
450 | static char *find_pair(char *, char); // find matching pair () [] {}
|
---|
451 | static char *text_hole_delete(char *, char *); // at "p", delete a 'size' byte hole
|
---|
452 | // might reallocate text[]! use p += text_hole_make(p, ...),
|
---|
453 | // and be careful to not use pointers into potentially freed text[]!
|
---|
454 | static uintptr_t text_hole_make(char *, int); // at "p", make a 'size' byte hole
|
---|
455 | static char *yank_delete(char *, char *, int, int); // yank text[] into register then delete
|
---|
456 | static void show_help(void); // display some help info
|
---|
457 | static void rawmode(void); // set "raw" mode on tty
|
---|
458 | static void cookmode(void); // return to "cooked" mode on tty
|
---|
459 | // sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready)
|
---|
460 | static int mysleep(int);
|
---|
461 | static int readit(void); // read (maybe cursor) key from stdin
|
---|
462 | static int get_one_char(void); // read 1 char from stdin
|
---|
463 | static int file_size(const char *); // what is the byte size of "fn"
|
---|
464 | #if !ENABLE_FEATURE_VI_READONLY
|
---|
465 | #define file_insert(fn, p, update_ro_status) file_insert(fn, p)
|
---|
466 | #endif
|
---|
467 | // file_insert might reallocate text[]!
|
---|
468 | static int file_insert(const char *, char *, int);
|
---|
469 | static int file_write(char *, char *, char *);
|
---|
470 | static void place_cursor(int, int);
|
---|
471 | static void screen_erase(void);
|
---|
472 | static void clear_to_eol(void);
|
---|
473 | static void clear_to_eos(void);
|
---|
474 | static void go_bottom_and_clear_to_eol(void);
|
---|
475 | static void standout_start(void); // send "start reverse video" sequence
|
---|
476 | static void standout_end(void); // send "end reverse video" sequence
|
---|
477 | static void flash(int); // flash the terminal screen
|
---|
478 | static void show_status_line(void); // put a message on the bottom line
|
---|
479 | static void status_line(const char *, ...); // print to status buf
|
---|
480 | static void status_line_bold(const char *, ...);
|
---|
481 | static void not_implemented(const char *); // display "Not implemented" message
|
---|
482 | static int format_edit_status(void); // format file status on status line
|
---|
483 | static void redraw(int); // force a full screen refresh
|
---|
484 | static char* format_line(char* /*, int*/);
|
---|
485 | static void refresh(int); // update the terminal from screen[]
|
---|
486 |
|
---|
487 | static void Indicate_Error(void); // use flash or beep to indicate error
|
---|
488 | #define indicate_error(c) Indicate_Error()
|
---|
489 | static void Hit_Return(void);
|
---|
490 |
|
---|
491 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
492 | static char *char_search(char *, const char *, int, int); // search for pattern starting at p
|
---|
493 | #endif
|
---|
494 | #if ENABLE_FEATURE_VI_COLON
|
---|
495 | static char *get_one_address(char *, int *); // get colon addr, if present
|
---|
496 | static char *get_address(char *, int *, int *); // get two colon addrs, if present
|
---|
497 | static void colon(char *); // execute the "colon" mode cmds
|
---|
498 | #endif
|
---|
499 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
500 | static void winch_sig(int); // catch window size changes
|
---|
501 | static void suspend_sig(int); // catch ctrl-Z
|
---|
502 | static void catch_sig(int); // catch ctrl-C and alarm time-outs
|
---|
503 | #endif
|
---|
504 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
505 | static void start_new_cmd_q(char); // new queue for command
|
---|
506 | static void end_cmd_q(void); // stop saving input chars
|
---|
507 | #else
|
---|
508 | #define end_cmd_q() ((void)0)
|
---|
509 | #endif
|
---|
510 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
511 | static void showmatching(char *); // show the matching pair () [] {}
|
---|
512 | #endif
|
---|
513 | #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
|
---|
514 | // might reallocate text[]! use p += string_insert(p, ...),
|
---|
515 | // and be careful to not use pointers into potentially freed text[]!
|
---|
516 | static uintptr_t string_insert(char *, const char *); // insert the string at 'p'
|
---|
517 | #endif
|
---|
518 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
519 | static char *text_yank(char *, char *, int); // save copy of "p" into a register
|
---|
520 | static char what_reg(void); // what is letter of current YDreg
|
---|
521 | static void check_context(char); // remember context for '' command
|
---|
522 | #endif
|
---|
523 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
524 | static void crash_dummy();
|
---|
525 | static void crash_test();
|
---|
526 | static int crashme = 0;
|
---|
527 | #endif
|
---|
528 |
|
---|
529 |
|
---|
530 | static void write1(const char *out)
|
---|
531 | {
|
---|
532 | fputs(out, stdout);
|
---|
533 | }
|
---|
534 |
|
---|
535 | int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
536 | int vi_main(int argc, char **argv)
|
---|
537 | {
|
---|
538 | int c;
|
---|
539 |
|
---|
540 | INIT_G();
|
---|
541 |
|
---|
542 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
---|
543 | my_pid = getpid();
|
---|
544 | #endif
|
---|
545 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
546 | srand((long) my_pid);
|
---|
547 | #endif
|
---|
548 | #ifdef NO_SUCH_APPLET_YET
|
---|
549 | /* If we aren't "vi", we are "view" */
|
---|
550 | if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
|
---|
551 | SET_READONLY_MODE(readonly_mode);
|
---|
552 | }
|
---|
553 | #endif
|
---|
554 |
|
---|
555 | // autoindent is not default in vim 7.3
|
---|
556 | vi_setops = /*VI_AUTOINDENT |*/ VI_SHOWMATCH | VI_IGNORECASE;
|
---|
557 | // 1- process $HOME/.exrc file (not inplemented yet)
|
---|
558 | // 2- process EXINIT variable from environment
|
---|
559 | // 3- process command line args
|
---|
560 | #if ENABLE_FEATURE_VI_COLON
|
---|
561 | {
|
---|
562 | char *p = getenv("EXINIT");
|
---|
563 | if (p && *p)
|
---|
564 | initial_cmds[0] = xstrndup(p, MAX_INPUT_LEN);
|
---|
565 | }
|
---|
566 | #endif
|
---|
567 | while ((c = getopt(argc, argv, "hCRH" IF_FEATURE_VI_COLON("c:"))) != -1) {
|
---|
568 | switch (c) {
|
---|
569 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
570 | case 'C':
|
---|
571 | crashme = 1;
|
---|
572 | break;
|
---|
573 | #endif
|
---|
574 | #if ENABLE_FEATURE_VI_READONLY
|
---|
575 | case 'R': // Read-only flag
|
---|
576 | SET_READONLY_MODE(readonly_mode);
|
---|
577 | break;
|
---|
578 | #endif
|
---|
579 | #if ENABLE_FEATURE_VI_COLON
|
---|
580 | case 'c': // cmd line vi command
|
---|
581 | if (*optarg)
|
---|
582 | initial_cmds[initial_cmds[0] != NULL] = xstrndup(optarg, MAX_INPUT_LEN);
|
---|
583 | break;
|
---|
584 | #endif
|
---|
585 | case 'H':
|
---|
586 | show_help();
|
---|
587 | /* fall through */
|
---|
588 | default:
|
---|
589 | bb_show_usage();
|
---|
590 | return 1;
|
---|
591 | }
|
---|
592 | }
|
---|
593 |
|
---|
594 | // The argv array can be used by the ":next" and ":rewind" commands
|
---|
595 | argv += optind;
|
---|
596 | argc -= optind;
|
---|
597 |
|
---|
598 | //----- This is the main file handling loop --------------
|
---|
599 | save_argc = argc;
|
---|
600 | optind = 0;
|
---|
601 | // "Save cursor, use alternate screen buffer, clear screen"
|
---|
602 | write1("\033[?1049h");
|
---|
603 | while (1) {
|
---|
604 | edit_file(argv[optind]); /* param might be NULL */
|
---|
605 | if (++optind >= argc)
|
---|
606 | break;
|
---|
607 | }
|
---|
608 | // "Use normal screen buffer, restore cursor"
|
---|
609 | write1("\033[?1049l");
|
---|
610 | //-----------------------------------------------------------
|
---|
611 |
|
---|
612 | return 0;
|
---|
613 | }
|
---|
614 |
|
---|
615 | /* read text from file or create an empty buf */
|
---|
616 | /* will also update current_filename */
|
---|
617 | static int init_text_buffer(char *fn)
|
---|
618 | {
|
---|
619 | int rc;
|
---|
620 | int size = file_size(fn); // file size. -1 means does not exist.
|
---|
621 |
|
---|
622 | /* allocate/reallocate text buffer */
|
---|
623 | free(text);
|
---|
624 | text_size = size + 10240;
|
---|
625 | screenbegin = dot = end = text = xzalloc(text_size);
|
---|
626 |
|
---|
627 | if (fn != current_filename) {
|
---|
628 | free(current_filename);
|
---|
629 | current_filename = xstrdup(fn);
|
---|
630 | }
|
---|
631 | if (size < 0) {
|
---|
632 | // file dont exist. Start empty buf with dummy line
|
---|
633 | char_insert(text, '\n');
|
---|
634 | rc = 0;
|
---|
635 | } else {
|
---|
636 | rc = file_insert(fn, text, 1);
|
---|
637 | }
|
---|
638 | file_modified = 0;
|
---|
639 | last_file_modified = -1;
|
---|
640 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
641 | /* init the marks. */
|
---|
642 | memset(mark, 0, sizeof(mark));
|
---|
643 | #endif
|
---|
644 | return rc;
|
---|
645 | }
|
---|
646 |
|
---|
647 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
---|
648 | static int query_screen_dimensions(void)
|
---|
649 | {
|
---|
650 | int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows);
|
---|
651 | if (rows > MAX_SCR_ROWS)
|
---|
652 | rows = MAX_SCR_ROWS;
|
---|
653 | if (columns > MAX_SCR_COLS)
|
---|
654 | columns = MAX_SCR_COLS;
|
---|
655 | return err;
|
---|
656 | }
|
---|
657 | #else
|
---|
658 | # define query_screen_dimensions() (0)
|
---|
659 | #endif
|
---|
660 |
|
---|
661 | static void edit_file(char *fn)
|
---|
662 | {
|
---|
663 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
664 | #define cur_line edit_file__cur_line
|
---|
665 | #endif
|
---|
666 | int c;
|
---|
667 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
668 | int sig;
|
---|
669 | #endif
|
---|
670 |
|
---|
671 | editing = 1; // 0 = exit, 1 = one file, 2 = multiple files
|
---|
672 | rawmode();
|
---|
673 | rows = 24;
|
---|
674 | columns = 80;
|
---|
675 | IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions();
|
---|
676 | #if ENABLE_FEATURE_VI_ASK_TERMINAL
|
---|
677 | if (G.get_rowcol_error /* TODO? && no input on stdin */) {
|
---|
678 | uint64_t k;
|
---|
679 | write1("\033[999;999H" "\033[6n");
|
---|
680 | fflush_all();
|
---|
681 | k = read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100);
|
---|
682 | if ((int32_t)k == KEYCODE_CURSOR_POS) {
|
---|
683 | uint32_t rc = (k >> 32);
|
---|
684 | columns = (rc & 0x7fff);
|
---|
685 | if (columns > MAX_SCR_COLS)
|
---|
686 | columns = MAX_SCR_COLS;
|
---|
687 | rows = ((rc >> 16) & 0x7fff);
|
---|
688 | if (rows > MAX_SCR_ROWS)
|
---|
689 | rows = MAX_SCR_ROWS;
|
---|
690 | }
|
---|
691 | }
|
---|
692 | #endif
|
---|
693 | new_screen(rows, columns); // get memory for virtual screen
|
---|
694 | init_text_buffer(fn);
|
---|
695 |
|
---|
696 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
697 | YDreg = 26; // default Yank/Delete reg
|
---|
698 | Ureg = 27; // hold orig line for "U" cmd
|
---|
699 | mark[26] = mark[27] = text; // init "previous context"
|
---|
700 | #endif
|
---|
701 |
|
---|
702 | last_forward_char = last_input_char = '\0';
|
---|
703 | crow = 0;
|
---|
704 | ccol = 0;
|
---|
705 |
|
---|
706 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
707 | signal(SIGINT, catch_sig);
|
---|
708 | signal(SIGWINCH, winch_sig);
|
---|
709 | signal(SIGTSTP, suspend_sig);
|
---|
710 | sig = sigsetjmp(restart, 1);
|
---|
711 | if (sig != 0) {
|
---|
712 | screenbegin = dot = text;
|
---|
713 | }
|
---|
714 | #endif
|
---|
715 |
|
---|
716 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace
|
---|
717 | cmdcnt = 0;
|
---|
718 | tabstop = 8;
|
---|
719 | offset = 0; // no horizontal offset
|
---|
720 | c = '\0';
|
---|
721 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
722 | free(ioq_start);
|
---|
723 | ioq = ioq_start = NULL;
|
---|
724 | lmc_len = 0;
|
---|
725 | adding2q = 0;
|
---|
726 | #endif
|
---|
727 |
|
---|
728 | #if ENABLE_FEATURE_VI_COLON
|
---|
729 | {
|
---|
730 | char *p, *q;
|
---|
731 | int n = 0;
|
---|
732 |
|
---|
733 | while ((p = initial_cmds[n]) != NULL) {
|
---|
734 | do {
|
---|
735 | q = p;
|
---|
736 | p = strchr(q, '\n');
|
---|
737 | if (p)
|
---|
738 | while (*p == '\n')
|
---|
739 | *p++ = '\0';
|
---|
740 | if (*q)
|
---|
741 | colon(q);
|
---|
742 | } while (p);
|
---|
743 | free(initial_cmds[n]);
|
---|
744 | initial_cmds[n] = NULL;
|
---|
745 | n++;
|
---|
746 | }
|
---|
747 | }
|
---|
748 | #endif
|
---|
749 | redraw(FALSE); // dont force every col re-draw
|
---|
750 | //------This is the main Vi cmd handling loop -----------------------
|
---|
751 | while (editing > 0) {
|
---|
752 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
753 | if (crashme > 0) {
|
---|
754 | if ((end - text) > 1) {
|
---|
755 | crash_dummy(); // generate a random command
|
---|
756 | } else {
|
---|
757 | crashme = 0;
|
---|
758 | string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
|
---|
759 | dot = text;
|
---|
760 | refresh(FALSE);
|
---|
761 | }
|
---|
762 | }
|
---|
763 | #endif
|
---|
764 | last_input_char = c = get_one_char(); // get a cmd from user
|
---|
765 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
766 | // save a copy of the current line- for the 'U" command
|
---|
767 | if (begin_line(dot) != cur_line) {
|
---|
768 | cur_line = begin_line(dot);
|
---|
769 | text_yank(begin_line(dot), end_line(dot), Ureg);
|
---|
770 | }
|
---|
771 | #endif
|
---|
772 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
773 | // These are commands that change text[].
|
---|
774 | // Remember the input for the "." command
|
---|
775 | if (!adding2q && ioq_start == NULL
|
---|
776 | && cmd_mode == 0 // command mode
|
---|
777 | && c > '\0' // exclude NUL and non-ASCII chars
|
---|
778 | && c < 0x7f // (Unicode and such)
|
---|
779 | && strchr(modifying_cmds, c)
|
---|
780 | ) {
|
---|
781 | start_new_cmd_q(c);
|
---|
782 | }
|
---|
783 | #endif
|
---|
784 | do_cmd(c); // execute the user command
|
---|
785 |
|
---|
786 | // poll to see if there is input already waiting. if we are
|
---|
787 | // not able to display output fast enough to keep up, skip
|
---|
788 | // the display update until we catch up with input.
|
---|
789 | if (!readbuffer[0] && mysleep(0) == 0) {
|
---|
790 | // no input pending - so update output
|
---|
791 | refresh(FALSE);
|
---|
792 | show_status_line();
|
---|
793 | }
|
---|
794 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
795 | if (crashme > 0)
|
---|
796 | crash_test(); // test editor variables
|
---|
797 | #endif
|
---|
798 | }
|
---|
799 | //-------------------------------------------------------------------
|
---|
800 |
|
---|
801 | go_bottom_and_clear_to_eol();
|
---|
802 | cookmode();
|
---|
803 | #undef cur_line
|
---|
804 | }
|
---|
805 |
|
---|
806 | //----- The Colon commands -------------------------------------
|
---|
807 | #if ENABLE_FEATURE_VI_COLON
|
---|
808 | static char *get_one_address(char *p, int *addr) // get colon addr, if present
|
---|
809 | {
|
---|
810 | int st;
|
---|
811 | char *q;
|
---|
812 | IF_FEATURE_VI_YANKMARK(char c;)
|
---|
813 | IF_FEATURE_VI_SEARCH(char *pat;)
|
---|
814 |
|
---|
815 | *addr = -1; // assume no addr
|
---|
816 | if (*p == '.') { // the current line
|
---|
817 | p++;
|
---|
818 | q = begin_line(dot);
|
---|
819 | *addr = count_lines(text, q);
|
---|
820 | }
|
---|
821 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
822 | else if (*p == '\'') { // is this a mark addr
|
---|
823 | p++;
|
---|
824 | c = tolower(*p);
|
---|
825 | p++;
|
---|
826 | if (c >= 'a' && c <= 'z') {
|
---|
827 | // we have a mark
|
---|
828 | c = c - 'a';
|
---|
829 | q = mark[(unsigned char) c];
|
---|
830 | if (q != NULL) { // is mark valid
|
---|
831 | *addr = count_lines(text, q);
|
---|
832 | }
|
---|
833 | }
|
---|
834 | }
|
---|
835 | #endif
|
---|
836 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
837 | else if (*p == '/') { // a search pattern
|
---|
838 | q = strchrnul(++p, '/');
|
---|
839 | pat = xstrndup(p, q - p); // save copy of pattern
|
---|
840 | p = q;
|
---|
841 | if (*p == '/')
|
---|
842 | p++;
|
---|
843 | q = char_search(dot, pat, FORWARD, FULL);
|
---|
844 | if (q != NULL) {
|
---|
845 | *addr = count_lines(text, q);
|
---|
846 | }
|
---|
847 | free(pat);
|
---|
848 | }
|
---|
849 | #endif
|
---|
850 | else if (*p == '$') { // the last line in file
|
---|
851 | p++;
|
---|
852 | q = begin_line(end - 1);
|
---|
853 | *addr = count_lines(text, q);
|
---|
854 | } else if (isdigit(*p)) { // specific line number
|
---|
855 | sscanf(p, "%d%n", addr, &st);
|
---|
856 | p += st;
|
---|
857 | } else {
|
---|
858 | // unrecognized address - assume -1
|
---|
859 | *addr = -1;
|
---|
860 | }
|
---|
861 | return p;
|
---|
862 | }
|
---|
863 |
|
---|
864 | static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present
|
---|
865 | {
|
---|
866 | //----- get the address' i.e., 1,3 'a,'b -----
|
---|
867 | // get FIRST addr, if present
|
---|
868 | while (isblank(*p))
|
---|
869 | p++; // skip over leading spaces
|
---|
870 | if (*p == '%') { // alias for 1,$
|
---|
871 | p++;
|
---|
872 | *b = 1;
|
---|
873 | *e = count_lines(text, end-1);
|
---|
874 | goto ga0;
|
---|
875 | }
|
---|
876 | p = get_one_address(p, b);
|
---|
877 | while (isblank(*p))
|
---|
878 | p++;
|
---|
879 | if (*p == ',') { // is there a address separator
|
---|
880 | p++;
|
---|
881 | while (isblank(*p))
|
---|
882 | p++;
|
---|
883 | // get SECOND addr, if present
|
---|
884 | p = get_one_address(p, e);
|
---|
885 | }
|
---|
886 | ga0:
|
---|
887 | while (isblank(*p))
|
---|
888 | p++; // skip over trailing spaces
|
---|
889 | return p;
|
---|
890 | }
|
---|
891 |
|
---|
892 | #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS
|
---|
893 | static void setops(const char *args, const char *opname, int flg_no,
|
---|
894 | const char *short_opname, int opt)
|
---|
895 | {
|
---|
896 | const char *a = args + flg_no;
|
---|
897 | int l = strlen(opname) - 1; /* opname have + ' ' */
|
---|
898 |
|
---|
899 | // maybe strncmp? we had tons of erroneous strncasecmp's...
|
---|
900 | if (strncasecmp(a, opname, l) == 0
|
---|
901 | || strncasecmp(a, short_opname, 2) == 0
|
---|
902 | ) {
|
---|
903 | if (flg_no)
|
---|
904 | vi_setops &= ~opt;
|
---|
905 | else
|
---|
906 | vi_setops |= opt;
|
---|
907 | }
|
---|
908 | }
|
---|
909 | #endif
|
---|
910 |
|
---|
911 | // buf must be no longer than MAX_INPUT_LEN!
|
---|
912 | static void colon(char *buf)
|
---|
913 | {
|
---|
914 | char c, *orig_buf, *buf1, *q, *r;
|
---|
915 | char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN];
|
---|
916 | int i, l, li, ch, b, e;
|
---|
917 | int useforce, forced = FALSE;
|
---|
918 |
|
---|
919 | // :3154 // if (-e line 3154) goto it else stay put
|
---|
920 | // :4,33w! foo // write a portion of buffer to file "foo"
|
---|
921 | // :w // write all of buffer to current file
|
---|
922 | // :q // quit
|
---|
923 | // :q! // quit- dont care about modified file
|
---|
924 | // :'a,'z!sort -u // filter block through sort
|
---|
925 | // :'f // goto mark "f"
|
---|
926 | // :'fl // list literal the mark "f" line
|
---|
927 | // :.r bar // read file "bar" into buffer before dot
|
---|
928 | // :/123/,/abc/d // delete lines from "123" line to "abc" line
|
---|
929 | // :/xyz/ // goto the "xyz" line
|
---|
930 | // :s/find/replace/ // substitute pattern "find" with "replace"
|
---|
931 | // :!<cmd> // run <cmd> then return
|
---|
932 | //
|
---|
933 |
|
---|
934 | if (!buf[0])
|
---|
935 | goto ret;
|
---|
936 | if (*buf == ':')
|
---|
937 | buf++; // move past the ':'
|
---|
938 |
|
---|
939 | li = ch = i = 0;
|
---|
940 | b = e = -1;
|
---|
941 | q = text; // assume 1,$ for the range
|
---|
942 | r = end - 1;
|
---|
943 | li = count_lines(text, end - 1);
|
---|
944 | fn = current_filename;
|
---|
945 |
|
---|
946 | // look for optional address(es) :. :1 :1,9 :'q,'a :%
|
---|
947 | buf = get_address(buf, &b, &e);
|
---|
948 |
|
---|
949 | // remember orig command line
|
---|
950 | orig_buf = buf;
|
---|
951 |
|
---|
952 | // get the COMMAND into cmd[]
|
---|
953 | buf1 = cmd;
|
---|
954 | while (*buf != '\0') {
|
---|
955 | if (isspace(*buf))
|
---|
956 | break;
|
---|
957 | *buf1++ = *buf++;
|
---|
958 | }
|
---|
959 | *buf1 = '\0';
|
---|
960 | // get any ARGuments
|
---|
961 | while (isblank(*buf))
|
---|
962 | buf++;
|
---|
963 | strcpy(args, buf);
|
---|
964 | useforce = FALSE;
|
---|
965 | buf1 = last_char_is(cmd, '!');
|
---|
966 | if (buf1) {
|
---|
967 | useforce = TRUE;
|
---|
968 | *buf1 = '\0'; // get rid of !
|
---|
969 | }
|
---|
970 | if (b >= 0) {
|
---|
971 | // if there is only one addr, then the addr
|
---|
972 | // is the line number of the single line the
|
---|
973 | // user wants. So, reset the end
|
---|
974 | // pointer to point at end of the "b" line
|
---|
975 | q = find_line(b); // what line is #b
|
---|
976 | r = end_line(q);
|
---|
977 | li = 1;
|
---|
978 | }
|
---|
979 | if (e >= 0) {
|
---|
980 | // we were given two addrs. change the
|
---|
981 | // end pointer to the addr given by user.
|
---|
982 | r = find_line(e); // what line is #e
|
---|
983 | r = end_line(r);
|
---|
984 | li = e - b + 1;
|
---|
985 | }
|
---|
986 | // ------------ now look for the command ------------
|
---|
987 | i = strlen(cmd);
|
---|
988 | if (i == 0) { // :123CR goto line #123
|
---|
989 | if (b >= 0) {
|
---|
990 | dot = find_line(b); // what line is #b
|
---|
991 | dot_skip_over_ws();
|
---|
992 | }
|
---|
993 | }
|
---|
994 | #if ENABLE_FEATURE_ALLOW_EXEC
|
---|
995 | else if (cmd[0] == '!') { // run a cmd
|
---|
996 | int retcode;
|
---|
997 | // :!ls run the <cmd>
|
---|
998 | go_bottom_and_clear_to_eol();
|
---|
999 | cookmode();
|
---|
1000 | retcode = system(orig_buf + 1); // run the cmd
|
---|
1001 | if (retcode)
|
---|
1002 | printf("\nshell returned %i\n\n", retcode);
|
---|
1003 | rawmode();
|
---|
1004 | Hit_Return(); // let user see results
|
---|
1005 | }
|
---|
1006 | #endif
|
---|
1007 | else if (cmd[0] == '=' && !cmd[1]) { // where is the address
|
---|
1008 | if (b < 0) { // no addr given- use defaults
|
---|
1009 | b = e = count_lines(text, dot);
|
---|
1010 | }
|
---|
1011 | status_line("%d", b);
|
---|
1012 | } else if (strncmp(cmd, "delete", i) == 0) { // delete lines
|
---|
1013 | if (b < 0) { // no addr given- use defaults
|
---|
1014 | q = begin_line(dot); // assume .,. for the range
|
---|
1015 | r = end_line(dot);
|
---|
1016 | }
|
---|
1017 | dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines
|
---|
1018 | dot_skip_over_ws();
|
---|
1019 | } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file
|
---|
1020 | // don't edit, if the current file has been modified
|
---|
1021 | if (file_modified && !useforce) {
|
---|
1022 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
---|
1023 | goto ret;
|
---|
1024 | }
|
---|
1025 | if (args[0]) {
|
---|
1026 | // the user supplied a file name
|
---|
1027 | fn = args;
|
---|
1028 | } else if (current_filename && current_filename[0]) {
|
---|
1029 | // no user supplied name- use the current filename
|
---|
1030 | // fn = current_filename; was set by default
|
---|
1031 | } else {
|
---|
1032 | // no user file name, no current name- punt
|
---|
1033 | status_line_bold("No current filename");
|
---|
1034 | goto ret;
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | if (init_text_buffer(fn) < 0)
|
---|
1038 | goto ret;
|
---|
1039 |
|
---|
1040 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1041 | if (Ureg >= 0 && Ureg < 28) {
|
---|
1042 | free(reg[Ureg]); // free orig line reg- for 'U'
|
---|
1043 | reg[Ureg] = NULL;
|
---|
1044 | }
|
---|
1045 | if (YDreg >= 0 && YDreg < 28) {
|
---|
1046 | free(reg[YDreg]); // free default yank/delete register
|
---|
1047 | reg[YDreg] = NULL;
|
---|
1048 | }
|
---|
1049 | #endif
|
---|
1050 | // how many lines in text[]?
|
---|
1051 | li = count_lines(text, end - 1);
|
---|
1052 | status_line("\"%s\"%s"
|
---|
1053 | IF_FEATURE_VI_READONLY("%s")
|
---|
1054 | " %dL, %dC", current_filename,
|
---|
1055 | (file_size(fn) < 0 ? " [New file]" : ""),
|
---|
1056 | IF_FEATURE_VI_READONLY(
|
---|
1057 | ((readonly_mode) ? " [Readonly]" : ""),
|
---|
1058 | )
|
---|
1059 | li, ch);
|
---|
1060 | } else if (strncmp(cmd, "file", i) == 0) { // what File is this
|
---|
1061 | if (b != -1 || e != -1) {
|
---|
1062 | status_line_bold("No address allowed on this command");
|
---|
1063 | goto ret;
|
---|
1064 | }
|
---|
1065 | if (args[0]) {
|
---|
1066 | // user wants a new filename
|
---|
1067 | free(current_filename);
|
---|
1068 | current_filename = xstrdup(args);
|
---|
1069 | } else {
|
---|
1070 | // user wants file status info
|
---|
1071 | last_status_cksum = 0; // force status update
|
---|
1072 | }
|
---|
1073 | } else if (strncmp(cmd, "features", i) == 0) { // what features are available
|
---|
1074 | // print out values of all features
|
---|
1075 | go_bottom_and_clear_to_eol();
|
---|
1076 | cookmode();
|
---|
1077 | show_help();
|
---|
1078 | rawmode();
|
---|
1079 | Hit_Return();
|
---|
1080 | } else if (strncmp(cmd, "list", i) == 0) { // literal print line
|
---|
1081 | if (b < 0) { // no addr given- use defaults
|
---|
1082 | q = begin_line(dot); // assume .,. for the range
|
---|
1083 | r = end_line(dot);
|
---|
1084 | }
|
---|
1085 | go_bottom_and_clear_to_eol();
|
---|
1086 | puts("\r");
|
---|
1087 | for (; q <= r; q++) {
|
---|
1088 | int c_is_no_print;
|
---|
1089 |
|
---|
1090 | c = *q;
|
---|
1091 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
1092 | if (c_is_no_print) {
|
---|
1093 | c = '.';
|
---|
1094 | standout_start();
|
---|
1095 | }
|
---|
1096 | if (c == '\n') {
|
---|
1097 | write1("$\r");
|
---|
1098 | } else if (c < ' ' || c == 127) {
|
---|
1099 | bb_putchar('^');
|
---|
1100 | if (c == 127)
|
---|
1101 | c = '?';
|
---|
1102 | else
|
---|
1103 | c += '@';
|
---|
1104 | }
|
---|
1105 | bb_putchar(c);
|
---|
1106 | if (c_is_no_print)
|
---|
1107 | standout_end();
|
---|
1108 | }
|
---|
1109 | Hit_Return();
|
---|
1110 | } else if (strncmp(cmd, "quit", i) == 0 // quit
|
---|
1111 | || strncmp(cmd, "next", i) == 0 // edit next file
|
---|
1112 | || strncmp(cmd, "prev", i) == 0 // edit previous file
|
---|
1113 | ) {
|
---|
1114 | int n;
|
---|
1115 | if (useforce) {
|
---|
1116 | if (*cmd == 'q') {
|
---|
1117 | // force end of argv list
|
---|
1118 | optind = save_argc;
|
---|
1119 | }
|
---|
1120 | editing = 0;
|
---|
1121 | goto ret;
|
---|
1122 | }
|
---|
1123 | // don't exit if the file been modified
|
---|
1124 | if (file_modified) {
|
---|
1125 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
---|
1126 | goto ret;
|
---|
1127 | }
|
---|
1128 | // are there other file to edit
|
---|
1129 | n = save_argc - optind - 1;
|
---|
1130 | if (*cmd == 'q' && n > 0) {
|
---|
1131 | status_line_bold("%d more file(s) to edit", n);
|
---|
1132 | goto ret;
|
---|
1133 | }
|
---|
1134 | if (*cmd == 'n' && n <= 0) {
|
---|
1135 | status_line_bold("No more files to edit");
|
---|
1136 | goto ret;
|
---|
1137 | }
|
---|
1138 | if (*cmd == 'p') {
|
---|
1139 | // are there previous files to edit
|
---|
1140 | if (optind < 1) {
|
---|
1141 | status_line_bold("No previous files to edit");
|
---|
1142 | goto ret;
|
---|
1143 | }
|
---|
1144 | optind -= 2;
|
---|
1145 | }
|
---|
1146 | editing = 0;
|
---|
1147 | } else if (strncmp(cmd, "read", i) == 0) { // read file into text[]
|
---|
1148 | fn = args;
|
---|
1149 | if (!fn[0]) {
|
---|
1150 | status_line_bold("No filename given");
|
---|
1151 | goto ret;
|
---|
1152 | }
|
---|
1153 | if (b < 0) { // no addr given- use defaults
|
---|
1154 | q = begin_line(dot); // assume "dot"
|
---|
1155 | }
|
---|
1156 | // read after current line- unless user said ":0r foo"
|
---|
1157 | if (b != 0)
|
---|
1158 | q = next_line(q);
|
---|
1159 | { // dance around potentially-reallocated text[]
|
---|
1160 | uintptr_t ofs = q - text;
|
---|
1161 | ch = file_insert(fn, q, 0);
|
---|
1162 | q = text + ofs;
|
---|
1163 | }
|
---|
1164 | if (ch < 0)
|
---|
1165 | goto ret; // nothing was inserted
|
---|
1166 | // how many lines in text[]?
|
---|
1167 | li = count_lines(q, q + ch - 1);
|
---|
1168 | status_line("\"%s\""
|
---|
1169 | IF_FEATURE_VI_READONLY("%s")
|
---|
1170 | " %dL, %dC", fn,
|
---|
1171 | IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
|
---|
1172 | li, ch);
|
---|
1173 | if (ch > 0) {
|
---|
1174 | // if the insert is before "dot" then we need to update
|
---|
1175 | if (q <= dot)
|
---|
1176 | dot += ch;
|
---|
1177 | /*file_modified++; - done by file_insert */
|
---|
1178 | }
|
---|
1179 | } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args
|
---|
1180 | if (file_modified && !useforce) {
|
---|
1181 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
---|
1182 | } else {
|
---|
1183 | // reset the filenames to edit
|
---|
1184 | optind = -1; /* start from 0th file */
|
---|
1185 | editing = 0;
|
---|
1186 | }
|
---|
1187 | #if ENABLE_FEATURE_VI_SET
|
---|
1188 | } else if (strncmp(cmd, "set", i) == 0) { // set or clear features
|
---|
1189 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1190 | char *argp;
|
---|
1191 | #endif
|
---|
1192 | i = 0; // offset into args
|
---|
1193 | // only blank is regarded as args delimiter. What about tab '\t'?
|
---|
1194 | if (!args[0] || strcasecmp(args, "all") == 0) {
|
---|
1195 | // print out values of all options
|
---|
1196 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1197 | status_line_bold(
|
---|
1198 | "%sautoindent "
|
---|
1199 | "%sflash "
|
---|
1200 | "%signorecase "
|
---|
1201 | "%sshowmatch "
|
---|
1202 | "tabstop=%u",
|
---|
1203 | autoindent ? "" : "no",
|
---|
1204 | err_method ? "" : "no",
|
---|
1205 | ignorecase ? "" : "no",
|
---|
1206 | showmatch ? "" : "no",
|
---|
1207 | tabstop
|
---|
1208 | );
|
---|
1209 | #endif
|
---|
1210 | goto ret;
|
---|
1211 | }
|
---|
1212 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1213 | argp = args;
|
---|
1214 | while (*argp) {
|
---|
1215 | if (strncmp(argp, "no", 2) == 0)
|
---|
1216 | i = 2; // ":set noautoindent"
|
---|
1217 | setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);
|
---|
1218 | setops(argp, "flash " , i, "fl", VI_ERR_METHOD);
|
---|
1219 | setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE);
|
---|
1220 | setops(argp, "showmatch " , i, "sm", VI_SHOWMATCH );
|
---|
1221 | if (strncmp(argp + i, "tabstop=", 8) == 0) {
|
---|
1222 | int t = 0;
|
---|
1223 | sscanf(argp + i+8, "%u", &t);
|
---|
1224 | if (t > 0 && t <= MAX_TABSTOP)
|
---|
1225 | tabstop = t;
|
---|
1226 | }
|
---|
1227 | argp = skip_non_whitespace(argp);
|
---|
1228 | argp = skip_whitespace(argp);
|
---|
1229 | }
|
---|
1230 | #endif /* FEATURE_VI_SETOPTS */
|
---|
1231 | #endif /* FEATURE_VI_SET */
|
---|
1232 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1233 | } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern
|
---|
1234 | char *F, *R, *flags;
|
---|
1235 | size_t len_F, len_R;
|
---|
1236 | int gflag; // global replace flag
|
---|
1237 |
|
---|
1238 | // F points to the "find" pattern
|
---|
1239 | // R points to the "replace" pattern
|
---|
1240 | // replace the cmd line delimiters "/" with NULs
|
---|
1241 | c = orig_buf[1]; // what is the delimiter
|
---|
1242 | F = orig_buf + 2; // start of "find"
|
---|
1243 | R = strchr(F, c); // middle delimiter
|
---|
1244 | if (!R)
|
---|
1245 | goto colon_s_fail;
|
---|
1246 | len_F = R - F;
|
---|
1247 | *R++ = '\0'; // terminate "find"
|
---|
1248 | flags = strchr(R, c);
|
---|
1249 | if (!flags)
|
---|
1250 | goto colon_s_fail;
|
---|
1251 | len_R = flags - R;
|
---|
1252 | *flags++ = '\0'; // terminate "replace"
|
---|
1253 | gflag = *flags;
|
---|
1254 |
|
---|
1255 | q = begin_line(q);
|
---|
1256 | if (b < 0) { // maybe :s/foo/bar/
|
---|
1257 | q = begin_line(dot); // start with cur line
|
---|
1258 | b = count_lines(text, q); // cur line number
|
---|
1259 | }
|
---|
1260 | if (e < 0)
|
---|
1261 | e = b; // maybe :.s/foo/bar/
|
---|
1262 |
|
---|
1263 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
|
---|
1264 | char *ls = q; // orig line start
|
---|
1265 | char *found;
|
---|
1266 | vc4:
|
---|
1267 | found = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
---|
1268 | if (found) {
|
---|
1269 | uintptr_t bias;
|
---|
1270 | // we found the "find" pattern - delete it
|
---|
1271 | text_hole_delete(found, found + len_F - 1);
|
---|
1272 | // inset the "replace" patern
|
---|
1273 | bias = string_insert(found, R); // insert the string
|
---|
1274 | found += bias;
|
---|
1275 | ls += bias;
|
---|
1276 | /*q += bias; - recalculated anyway */
|
---|
1277 | // check for "global" :s/foo/bar/g
|
---|
1278 | if (gflag == 'g') {
|
---|
1279 | if ((found + len_R) < end_line(ls)) {
|
---|
1280 | q = found + len_R;
|
---|
1281 | goto vc4; // don't let q move past cur line
|
---|
1282 | }
|
---|
1283 | }
|
---|
1284 | }
|
---|
1285 | q = next_line(ls);
|
---|
1286 | }
|
---|
1287 | #endif /* FEATURE_VI_SEARCH */
|
---|
1288 | } else if (strncmp(cmd, "version", i) == 0) { // show software version
|
---|
1289 | status_line(BB_VER " " BB_BT);
|
---|
1290 | } else if (strncmp(cmd, "write", i) == 0 // write text to file
|
---|
1291 | || strncmp(cmd, "wq", i) == 0
|
---|
1292 | || strncmp(cmd, "wn", i) == 0
|
---|
1293 | || (cmd[0] == 'x' && !cmd[1])
|
---|
1294 | ) {
|
---|
1295 | // is there a file name to write to?
|
---|
1296 | if (args[0]) {
|
---|
1297 | fn = args;
|
---|
1298 | }
|
---|
1299 | #if ENABLE_FEATURE_VI_READONLY
|
---|
1300 | if (readonly_mode && !useforce) {
|
---|
1301 | status_line_bold("\"%s\" File is read only", fn);
|
---|
1302 | goto ret;
|
---|
1303 | }
|
---|
1304 | #endif
|
---|
1305 | // how many lines in text[]?
|
---|
1306 | li = count_lines(q, r);
|
---|
1307 | ch = r - q + 1;
|
---|
1308 | // see if file exists- if not, its just a new file request
|
---|
1309 | if (useforce) {
|
---|
1310 | // if "fn" is not write-able, chmod u+w
|
---|
1311 | // sprintf(syscmd, "chmod u+w %s", fn);
|
---|
1312 | // system(syscmd);
|
---|
1313 | forced = TRUE;
|
---|
1314 | }
|
---|
1315 | l = file_write(fn, q, r);
|
---|
1316 | if (useforce && forced) {
|
---|
1317 | // chmod u-w
|
---|
1318 | // sprintf(syscmd, "chmod u-w %s", fn);
|
---|
1319 | // system(syscmd);
|
---|
1320 | forced = FALSE;
|
---|
1321 | }
|
---|
1322 | if (l < 0) {
|
---|
1323 | if (l == -1)
|
---|
1324 | status_line_bold("\"%s\" %s", fn, strerror(errno));
|
---|
1325 | } else {
|
---|
1326 | status_line("\"%s\" %dL, %dC", fn, li, l);
|
---|
1327 | if (q == text && r == end - 1 && l == ch) {
|
---|
1328 | file_modified = 0;
|
---|
1329 | last_file_modified = -1;
|
---|
1330 | }
|
---|
1331 | if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n'
|
---|
1332 | || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N'
|
---|
1333 | )
|
---|
1334 | && l == ch
|
---|
1335 | ) {
|
---|
1336 | editing = 0;
|
---|
1337 | }
|
---|
1338 | }
|
---|
1339 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1340 | } else if (strncmp(cmd, "yank", i) == 0) { // yank lines
|
---|
1341 | if (b < 0) { // no addr given- use defaults
|
---|
1342 | q = begin_line(dot); // assume .,. for the range
|
---|
1343 | r = end_line(dot);
|
---|
1344 | }
|
---|
1345 | text_yank(q, r, YDreg);
|
---|
1346 | li = count_lines(q, r);
|
---|
1347 | status_line("Yank %d lines (%d chars) into [%c]",
|
---|
1348 | li, strlen(reg[YDreg]), what_reg());
|
---|
1349 | #endif
|
---|
1350 | } else {
|
---|
1351 | // cmd unknown
|
---|
1352 | not_implemented(cmd);
|
---|
1353 | }
|
---|
1354 | ret:
|
---|
1355 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
1356 | return;
|
---|
1357 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1358 | colon_s_fail:
|
---|
1359 | status_line(":s expression missing delimiters");
|
---|
1360 | #endif
|
---|
1361 | }
|
---|
1362 |
|
---|
1363 | #endif /* FEATURE_VI_COLON */
|
---|
1364 |
|
---|
1365 | static void Hit_Return(void)
|
---|
1366 | {
|
---|
1367 | int c;
|
---|
1368 |
|
---|
1369 | standout_start();
|
---|
1370 | write1("[Hit return to continue]");
|
---|
1371 | standout_end();
|
---|
1372 | while ((c = get_one_char()) != '\n' && c != '\r')
|
---|
1373 | continue;
|
---|
1374 | redraw(TRUE); // force redraw all
|
---|
1375 | }
|
---|
1376 |
|
---|
1377 | static int next_tabstop(int col)
|
---|
1378 | {
|
---|
1379 | return col + ((tabstop - 1) - (col % tabstop));
|
---|
1380 | }
|
---|
1381 |
|
---|
1382 | //----- Synchronize the cursor to Dot --------------------------
|
---|
1383 | static NOINLINE void sync_cursor(char *d, int *row, int *col)
|
---|
1384 | {
|
---|
1385 | char *beg_cur; // begin and end of "d" line
|
---|
1386 | char *tp;
|
---|
1387 | int cnt, ro, co;
|
---|
1388 |
|
---|
1389 | beg_cur = begin_line(d); // first char of cur line
|
---|
1390 |
|
---|
1391 | if (beg_cur < screenbegin) {
|
---|
1392 | // "d" is before top line on screen
|
---|
1393 | // how many lines do we have to move
|
---|
1394 | cnt = count_lines(beg_cur, screenbegin);
|
---|
1395 | sc1:
|
---|
1396 | screenbegin = beg_cur;
|
---|
1397 | if (cnt > (rows - 1) / 2) {
|
---|
1398 | // we moved too many lines. put "dot" in middle of screen
|
---|
1399 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
|
---|
1400 | screenbegin = prev_line(screenbegin);
|
---|
1401 | }
|
---|
1402 | }
|
---|
1403 | } else {
|
---|
1404 | char *end_scr; // begin and end of screen
|
---|
1405 | end_scr = end_screen(); // last char of screen
|
---|
1406 | if (beg_cur > end_scr) {
|
---|
1407 | // "d" is after bottom line on screen
|
---|
1408 | // how many lines do we have to move
|
---|
1409 | cnt = count_lines(end_scr, beg_cur);
|
---|
1410 | if (cnt > (rows - 1) / 2)
|
---|
1411 | goto sc1; // too many lines
|
---|
1412 | for (ro = 0; ro < cnt - 1; ro++) {
|
---|
1413 | // move screen begin the same amount
|
---|
1414 | screenbegin = next_line(screenbegin);
|
---|
1415 | // now, move the end of screen
|
---|
1416 | end_scr = next_line(end_scr);
|
---|
1417 | end_scr = end_line(end_scr);
|
---|
1418 | }
|
---|
1419 | }
|
---|
1420 | }
|
---|
1421 | // "d" is on screen- find out which row
|
---|
1422 | tp = screenbegin;
|
---|
1423 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
|
---|
1424 | if (tp == beg_cur)
|
---|
1425 | break;
|
---|
1426 | tp = next_line(tp);
|
---|
1427 | }
|
---|
1428 |
|
---|
1429 | // find out what col "d" is on
|
---|
1430 | co = 0;
|
---|
1431 | while (tp < d) { // drive "co" to correct column
|
---|
1432 | if (*tp == '\n') //vda || *tp == '\0')
|
---|
1433 | break;
|
---|
1434 | if (*tp == '\t') {
|
---|
1435 | // handle tabs like real vi
|
---|
1436 | if (d == tp && cmd_mode) {
|
---|
1437 | break;
|
---|
1438 | }
|
---|
1439 | co = next_tabstop(co);
|
---|
1440 | } else if ((unsigned char)*tp < ' ' || *tp == 0x7f) {
|
---|
1441 | co++; // display as ^X, use 2 columns
|
---|
1442 | }
|
---|
1443 | co++;
|
---|
1444 | tp++;
|
---|
1445 | }
|
---|
1446 |
|
---|
1447 | // "co" is the column where "dot" is.
|
---|
1448 | // The screen has "columns" columns.
|
---|
1449 | // The currently displayed columns are 0+offset -- columns+ofset
|
---|
1450 | // |-------------------------------------------------------------|
|
---|
1451 | // ^ ^ ^
|
---|
1452 | // offset | |------- columns ----------------|
|
---|
1453 | //
|
---|
1454 | // If "co" is already in this range then we do not have to adjust offset
|
---|
1455 | // but, we do have to subtract the "offset" bias from "co".
|
---|
1456 | // If "co" is outside this range then we have to change "offset".
|
---|
1457 | // If the first char of a line is a tab the cursor will try to stay
|
---|
1458 | // in column 7, but we have to set offset to 0.
|
---|
1459 |
|
---|
1460 | if (co < 0 + offset) {
|
---|
1461 | offset = co;
|
---|
1462 | }
|
---|
1463 | if (co >= columns + offset) {
|
---|
1464 | offset = co - columns + 1;
|
---|
1465 | }
|
---|
1466 | // if the first char of the line is a tab, and "dot" is sitting on it
|
---|
1467 | // force offset to 0.
|
---|
1468 | if (d == beg_cur && *d == '\t') {
|
---|
1469 | offset = 0;
|
---|
1470 | }
|
---|
1471 | co -= offset;
|
---|
1472 |
|
---|
1473 | *row = ro;
|
---|
1474 | *col = co;
|
---|
1475 | }
|
---|
1476 |
|
---|
1477 | //----- Text Movement Routines ---------------------------------
|
---|
1478 | static char *begin_line(char *p) // return pointer to first char cur line
|
---|
1479 | {
|
---|
1480 | if (p > text) {
|
---|
1481 | p = memrchr(text, '\n', p - text);
|
---|
1482 | if (!p)
|
---|
1483 | return text;
|
---|
1484 | return p + 1;
|
---|
1485 | }
|
---|
1486 | return p;
|
---|
1487 | }
|
---|
1488 |
|
---|
1489 | static char *end_line(char *p) // return pointer to NL of cur line
|
---|
1490 | {
|
---|
1491 | if (p < end - 1) {
|
---|
1492 | p = memchr(p, '\n', end - p - 1);
|
---|
1493 | if (!p)
|
---|
1494 | return end - 1;
|
---|
1495 | }
|
---|
1496 | return p;
|
---|
1497 | }
|
---|
1498 |
|
---|
1499 | static char *dollar_line(char *p) // return pointer to just before NL line
|
---|
1500 | {
|
---|
1501 | p = end_line(p);
|
---|
1502 | // Try to stay off of the Newline
|
---|
1503 | if (*p == '\n' && (p - begin_line(p)) > 0)
|
---|
1504 | p--;
|
---|
1505 | return p;
|
---|
1506 | }
|
---|
1507 |
|
---|
1508 | static char *prev_line(char *p) // return pointer first char prev line
|
---|
1509 | {
|
---|
1510 | p = begin_line(p); // goto begining of cur line
|
---|
1511 | if (p > text && p[-1] == '\n')
|
---|
1512 | p--; // step to prev line
|
---|
1513 | p = begin_line(p); // goto begining of prev line
|
---|
1514 | return p;
|
---|
1515 | }
|
---|
1516 |
|
---|
1517 | static char *next_line(char *p) // return pointer first char next line
|
---|
1518 | {
|
---|
1519 | p = end_line(p);
|
---|
1520 | if (p < end - 1 && *p == '\n')
|
---|
1521 | p++; // step to next line
|
---|
1522 | return p;
|
---|
1523 | }
|
---|
1524 |
|
---|
1525 | //----- Text Information Routines ------------------------------
|
---|
1526 | static char *end_screen(void)
|
---|
1527 | {
|
---|
1528 | char *q;
|
---|
1529 | int cnt;
|
---|
1530 |
|
---|
1531 | // find new bottom line
|
---|
1532 | q = screenbegin;
|
---|
1533 | for (cnt = 0; cnt < rows - 2; cnt++)
|
---|
1534 | q = next_line(q);
|
---|
1535 | q = end_line(q);
|
---|
1536 | return q;
|
---|
1537 | }
|
---|
1538 |
|
---|
1539 | // count line from start to stop
|
---|
1540 | static int count_lines(char *start, char *stop)
|
---|
1541 | {
|
---|
1542 | char *q;
|
---|
1543 | int cnt;
|
---|
1544 |
|
---|
1545 | if (stop < start) { // start and stop are backwards- reverse them
|
---|
1546 | q = start;
|
---|
1547 | start = stop;
|
---|
1548 | stop = q;
|
---|
1549 | }
|
---|
1550 | cnt = 0;
|
---|
1551 | stop = end_line(stop);
|
---|
1552 | while (start <= stop && start <= end - 1) {
|
---|
1553 | start = end_line(start);
|
---|
1554 | if (*start == '\n')
|
---|
1555 | cnt++;
|
---|
1556 | start++;
|
---|
1557 | }
|
---|
1558 | return cnt;
|
---|
1559 | }
|
---|
1560 |
|
---|
1561 | static char *find_line(int li) // find begining of line #li
|
---|
1562 | {
|
---|
1563 | char *q;
|
---|
1564 |
|
---|
1565 | for (q = text; li > 1; li--) {
|
---|
1566 | q = next_line(q);
|
---|
1567 | }
|
---|
1568 | return q;
|
---|
1569 | }
|
---|
1570 |
|
---|
1571 | //----- Dot Movement Routines ----------------------------------
|
---|
1572 | static void dot_left(void)
|
---|
1573 | {
|
---|
1574 | if (dot > text && dot[-1] != '\n')
|
---|
1575 | dot--;
|
---|
1576 | }
|
---|
1577 |
|
---|
1578 | static void dot_right(void)
|
---|
1579 | {
|
---|
1580 | if (dot < end - 1 && *dot != '\n')
|
---|
1581 | dot++;
|
---|
1582 | }
|
---|
1583 |
|
---|
1584 | static void dot_begin(void)
|
---|
1585 | {
|
---|
1586 | dot = begin_line(dot); // return pointer to first char cur line
|
---|
1587 | }
|
---|
1588 |
|
---|
1589 | static void dot_end(void)
|
---|
1590 | {
|
---|
1591 | dot = end_line(dot); // return pointer to last char cur line
|
---|
1592 | }
|
---|
1593 |
|
---|
1594 | static char *move_to_col(char *p, int l)
|
---|
1595 | {
|
---|
1596 | int co;
|
---|
1597 |
|
---|
1598 | p = begin_line(p);
|
---|
1599 | co = 0;
|
---|
1600 | while (co < l && p < end) {
|
---|
1601 | if (*p == '\n') //vda || *p == '\0')
|
---|
1602 | break;
|
---|
1603 | if (*p == '\t') {
|
---|
1604 | co = next_tabstop(co);
|
---|
1605 | } else if (*p < ' ' || *p == 127) {
|
---|
1606 | co++; // display as ^X, use 2 columns
|
---|
1607 | }
|
---|
1608 | co++;
|
---|
1609 | p++;
|
---|
1610 | }
|
---|
1611 | return p;
|
---|
1612 | }
|
---|
1613 |
|
---|
1614 | static void dot_next(void)
|
---|
1615 | {
|
---|
1616 | dot = next_line(dot);
|
---|
1617 | }
|
---|
1618 |
|
---|
1619 | static void dot_prev(void)
|
---|
1620 | {
|
---|
1621 | dot = prev_line(dot);
|
---|
1622 | }
|
---|
1623 |
|
---|
1624 | static void dot_scroll(int cnt, int dir)
|
---|
1625 | {
|
---|
1626 | char *q;
|
---|
1627 |
|
---|
1628 | for (; cnt > 0; cnt--) {
|
---|
1629 | if (dir < 0) {
|
---|
1630 | // scroll Backwards
|
---|
1631 | // ctrl-Y scroll up one line
|
---|
1632 | screenbegin = prev_line(screenbegin);
|
---|
1633 | } else {
|
---|
1634 | // scroll Forwards
|
---|
1635 | // ctrl-E scroll down one line
|
---|
1636 | screenbegin = next_line(screenbegin);
|
---|
1637 | }
|
---|
1638 | }
|
---|
1639 | // make sure "dot" stays on the screen so we dont scroll off
|
---|
1640 | if (dot < screenbegin)
|
---|
1641 | dot = screenbegin;
|
---|
1642 | q = end_screen(); // find new bottom line
|
---|
1643 | if (dot > q)
|
---|
1644 | dot = begin_line(q); // is dot is below bottom line?
|
---|
1645 | dot_skip_over_ws();
|
---|
1646 | }
|
---|
1647 |
|
---|
1648 | static void dot_skip_over_ws(void)
|
---|
1649 | {
|
---|
1650 | // skip WS
|
---|
1651 | while (isspace(*dot) && *dot != '\n' && dot < end - 1)
|
---|
1652 | dot++;
|
---|
1653 | }
|
---|
1654 |
|
---|
1655 | static void dot_delete(void) // delete the char at 'dot'
|
---|
1656 | {
|
---|
1657 | text_hole_delete(dot, dot);
|
---|
1658 | }
|
---|
1659 |
|
---|
1660 | static char *bound_dot(char *p) // make sure text[0] <= P < "end"
|
---|
1661 | {
|
---|
1662 | if (p >= end && end > text) {
|
---|
1663 | p = end - 1;
|
---|
1664 | indicate_error('1');
|
---|
1665 | }
|
---|
1666 | if (p < text) {
|
---|
1667 | p = text;
|
---|
1668 | indicate_error('2');
|
---|
1669 | }
|
---|
1670 | return p;
|
---|
1671 | }
|
---|
1672 |
|
---|
1673 | //----- Helper Utility Routines --------------------------------
|
---|
1674 |
|
---|
1675 | //----------------------------------------------------------------
|
---|
1676 | //----- Char Routines --------------------------------------------
|
---|
1677 | /* Chars that are part of a word-
|
---|
1678 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
|
---|
1679 | * Chars that are Not part of a word (stoppers)
|
---|
1680 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
|
---|
1681 | * Chars that are WhiteSpace
|
---|
1682 | * TAB NEWLINE VT FF RETURN SPACE
|
---|
1683 | * DO NOT COUNT NEWLINE AS WHITESPACE
|
---|
1684 | */
|
---|
1685 |
|
---|
1686 | static char *new_screen(int ro, int co)
|
---|
1687 | {
|
---|
1688 | int li;
|
---|
1689 |
|
---|
1690 | free(screen);
|
---|
1691 | screensize = ro * co + 8;
|
---|
1692 | screen = xmalloc(screensize);
|
---|
1693 | // initialize the new screen. assume this will be a empty file.
|
---|
1694 | screen_erase();
|
---|
1695 | // non-existent text[] lines start with a tilde (~).
|
---|
1696 | for (li = 1; li < ro - 1; li++) {
|
---|
1697 | screen[(li * co) + 0] = '~';
|
---|
1698 | }
|
---|
1699 | return screen;
|
---|
1700 | }
|
---|
1701 |
|
---|
1702 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1703 |
|
---|
1704 | # if ENABLE_FEATURE_VI_REGEX_SEARCH
|
---|
1705 |
|
---|
1706 | // search for pattern starting at p
|
---|
1707 | static char *char_search(char *p, const char *pat, int dir, int range)
|
---|
1708 | {
|
---|
1709 | char *q;
|
---|
1710 | struct re_pattern_buffer preg;
|
---|
1711 | int i;
|
---|
1712 | int size;
|
---|
1713 |
|
---|
1714 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
|
---|
1715 | preg.translate = 0;
|
---|
1716 | preg.fastmap = 0;
|
---|
1717 | preg.buffer = 0;
|
---|
1718 | preg.allocated = 0;
|
---|
1719 |
|
---|
1720 | // assume a LIMITED forward search
|
---|
1721 | q = next_line(p);
|
---|
1722 | q = end_line(q);
|
---|
1723 | q = end - 1;
|
---|
1724 | if (dir == BACK) {
|
---|
1725 | q = prev_line(p);
|
---|
1726 | q = text;
|
---|
1727 | }
|
---|
1728 | // count the number of chars to search over, forward or backward
|
---|
1729 | size = q - p;
|
---|
1730 | if (size < 0)
|
---|
1731 | size = p - q;
|
---|
1732 | // RANGE could be negative if we are searching backwards
|
---|
1733 | range = q - p;
|
---|
1734 |
|
---|
1735 | q = (char *)re_compile_pattern(pat, strlen(pat), (struct re_pattern_buffer *)&preg);
|
---|
1736 | if (q != 0) {
|
---|
1737 | // The pattern was not compiled
|
---|
1738 | status_line_bold("bad search pattern: \"%s\": %s", pat, q);
|
---|
1739 | i = 0; // return p if pattern not compiled
|
---|
1740 | goto cs1;
|
---|
1741 | }
|
---|
1742 |
|
---|
1743 | q = p;
|
---|
1744 | if (range < 0) {
|
---|
1745 | q = p - size;
|
---|
1746 | if (q < text)
|
---|
1747 | q = text;
|
---|
1748 | }
|
---|
1749 | // search for the compiled pattern, preg, in p[]
|
---|
1750 | // range < 0- search backward
|
---|
1751 | // range > 0- search forward
|
---|
1752 | // 0 < start < size
|
---|
1753 | // re_search() < 0 not found or error
|
---|
1754 | // re_search() > 0 index of found pattern
|
---|
1755 | // struct pattern char int int int struct reg
|
---|
1756 | // re_search (*pattern_buffer, *string, size, start, range, *regs)
|
---|
1757 | i = re_search(&preg, q, size, 0, range, 0);
|
---|
1758 | if (i == -1) {
|
---|
1759 | p = 0;
|
---|
1760 | i = 0; // return NULL if pattern not found
|
---|
1761 | }
|
---|
1762 | cs1:
|
---|
1763 | if (dir == FORWARD) {
|
---|
1764 | p = p + i;
|
---|
1765 | } else {
|
---|
1766 | p = p - i;
|
---|
1767 | }
|
---|
1768 | return p;
|
---|
1769 | }
|
---|
1770 |
|
---|
1771 | # else
|
---|
1772 |
|
---|
1773 | # if ENABLE_FEATURE_VI_SETOPTS
|
---|
1774 | static int mycmp(const char *s1, const char *s2, int len)
|
---|
1775 | {
|
---|
1776 | if (ignorecase) {
|
---|
1777 | return strncasecmp(s1, s2, len);
|
---|
1778 | }
|
---|
1779 | return strncmp(s1, s2, len);
|
---|
1780 | }
|
---|
1781 | # else
|
---|
1782 | # define mycmp strncmp
|
---|
1783 | # endif
|
---|
1784 |
|
---|
1785 | static char *char_search(char *p, const char *pat, int dir, int range)
|
---|
1786 | {
|
---|
1787 | char *start, *stop;
|
---|
1788 | int len;
|
---|
1789 |
|
---|
1790 | len = strlen(pat);
|
---|
1791 | if (dir == FORWARD) {
|
---|
1792 | stop = end - 1; // assume range is p - end-1
|
---|
1793 | if (range == LIMITED)
|
---|
1794 | stop = next_line(p); // range is to next line
|
---|
1795 | for (start = p; start < stop; start++) {
|
---|
1796 | if (mycmp(start, pat, len) == 0) {
|
---|
1797 | return start;
|
---|
1798 | }
|
---|
1799 | }
|
---|
1800 | } else if (dir == BACK) {
|
---|
1801 | stop = text; // assume range is text - p
|
---|
1802 | if (range == LIMITED)
|
---|
1803 | stop = prev_line(p); // range is to prev line
|
---|
1804 | for (start = p - len; start >= stop; start--) {
|
---|
1805 | if (mycmp(start, pat, len) == 0) {
|
---|
1806 | return start;
|
---|
1807 | }
|
---|
1808 | }
|
---|
1809 | }
|
---|
1810 | // pattern not found
|
---|
1811 | return NULL;
|
---|
1812 | }
|
---|
1813 |
|
---|
1814 | # endif
|
---|
1815 |
|
---|
1816 | #endif /* FEATURE_VI_SEARCH */
|
---|
1817 |
|
---|
1818 | static char *char_insert(char *p, char c) // insert the char c at 'p'
|
---|
1819 | {
|
---|
1820 | if (c == 22) { // Is this an ctrl-V?
|
---|
1821 | p += stupid_insert(p, '^'); // use ^ to indicate literal next
|
---|
1822 | refresh(FALSE); // show the ^
|
---|
1823 | c = get_one_char();
|
---|
1824 | *p = c;
|
---|
1825 | p++;
|
---|
1826 | file_modified++;
|
---|
1827 | } else if (c == 27) { // Is this an ESC?
|
---|
1828 | cmd_mode = 0;
|
---|
1829 | cmdcnt = 0;
|
---|
1830 | end_cmd_q(); // stop adding to q
|
---|
1831 | last_status_cksum = 0; // force status update
|
---|
1832 | if ((p[-1] != '\n') && (dot > text)) {
|
---|
1833 | p--;
|
---|
1834 | }
|
---|
1835 | } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
|
---|
1836 | // 123456789
|
---|
1837 | if ((p[-1] != '\n') && (dot>text)) {
|
---|
1838 | p--;
|
---|
1839 | p = text_hole_delete(p, p); // shrink buffer 1 char
|
---|
1840 | }
|
---|
1841 | } else {
|
---|
1842 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1843 | // insert a char into text[]
|
---|
1844 | char *sp; // "save p"
|
---|
1845 | #endif
|
---|
1846 |
|
---|
1847 | if (c == 13)
|
---|
1848 | c = '\n'; // translate \r to \n
|
---|
1849 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1850 | sp = p; // remember addr of insert
|
---|
1851 | #endif
|
---|
1852 | p += 1 + stupid_insert(p, c); // insert the char
|
---|
1853 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1854 | if (showmatch && strchr(")]}", *sp) != NULL) {
|
---|
1855 | showmatching(sp);
|
---|
1856 | }
|
---|
1857 | if (autoindent && c == '\n') { // auto indent the new line
|
---|
1858 | char *q;
|
---|
1859 | size_t len;
|
---|
1860 | q = prev_line(p); // use prev line as template
|
---|
1861 | len = strspn(q, " \t"); // space or tab
|
---|
1862 | if (len) {
|
---|
1863 | uintptr_t bias;
|
---|
1864 | bias = text_hole_make(p, len);
|
---|
1865 | p += bias;
|
---|
1866 | q += bias;
|
---|
1867 | memcpy(p, q, len);
|
---|
1868 | p += len;
|
---|
1869 | }
|
---|
1870 | }
|
---|
1871 | #endif
|
---|
1872 | }
|
---|
1873 | return p;
|
---|
1874 | }
|
---|
1875 |
|
---|
1876 | // might reallocate text[]! use p += stupid_insert(p, ...),
|
---|
1877 | // and be careful to not use pointers into potentially freed text[]!
|
---|
1878 | static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p'
|
---|
1879 | {
|
---|
1880 | uintptr_t bias;
|
---|
1881 | bias = text_hole_make(p, 1);
|
---|
1882 | p += bias;
|
---|
1883 | *p = c;
|
---|
1884 | //file_modified++; - done by text_hole_make()
|
---|
1885 | return bias;
|
---|
1886 | }
|
---|
1887 |
|
---|
1888 | static int find_range(char **start, char **stop, char c)
|
---|
1889 | {
|
---|
1890 | char *save_dot, *p, *q, *t;
|
---|
1891 | int cnt, multiline = 0;
|
---|
1892 |
|
---|
1893 | save_dot = dot;
|
---|
1894 | p = q = dot;
|
---|
1895 |
|
---|
1896 | if (strchr("cdy><", c)) {
|
---|
1897 | // these cmds operate on whole lines
|
---|
1898 | p = q = begin_line(p);
|
---|
1899 | for (cnt = 1; cnt < cmdcnt; cnt++) {
|
---|
1900 | q = next_line(q);
|
---|
1901 | }
|
---|
1902 | q = end_line(q);
|
---|
1903 | } else if (strchr("^%$0bBeEfth\b\177", c)) {
|
---|
1904 | // These cmds operate on char positions
|
---|
1905 | do_cmd(c); // execute movement cmd
|
---|
1906 | q = dot;
|
---|
1907 | } else if (strchr("wW", c)) {
|
---|
1908 | do_cmd(c); // execute movement cmd
|
---|
1909 | // if we are at the next word's first char
|
---|
1910 | // step back one char
|
---|
1911 | // but check the possibilities when it is true
|
---|
1912 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
|
---|
1913 | || (ispunct(dot[-1]) && !ispunct(dot[0]))
|
---|
1914 | || (isalnum(dot[-1]) && !isalnum(dot[0]))))
|
---|
1915 | dot--; // move back off of next word
|
---|
1916 | if (dot > text && *dot == '\n')
|
---|
1917 | dot--; // stay off NL
|
---|
1918 | q = dot;
|
---|
1919 | } else if (strchr("H-k{", c)) {
|
---|
1920 | // these operate on multi-lines backwards
|
---|
1921 | q = end_line(dot); // find NL
|
---|
1922 | do_cmd(c); // execute movement cmd
|
---|
1923 | dot_begin();
|
---|
1924 | p = dot;
|
---|
1925 | } else if (strchr("L+j}\r\n", c)) {
|
---|
1926 | // these operate on multi-lines forwards
|
---|
1927 | p = begin_line(dot);
|
---|
1928 | do_cmd(c); // execute movement cmd
|
---|
1929 | dot_end(); // find NL
|
---|
1930 | q = dot;
|
---|
1931 | } else {
|
---|
1932 | // nothing -- this causes any other values of c to
|
---|
1933 | // represent the one-character range under the
|
---|
1934 | // cursor. this is correct for ' ' and 'l', but
|
---|
1935 | // perhaps no others.
|
---|
1936 | //
|
---|
1937 | }
|
---|
1938 | if (q < p) {
|
---|
1939 | t = q;
|
---|
1940 | q = p;
|
---|
1941 | p = t;
|
---|
1942 | }
|
---|
1943 |
|
---|
1944 | // backward char movements don't include start position
|
---|
1945 | if (q > p && strchr("^0bBh\b\177", c)) q--;
|
---|
1946 |
|
---|
1947 | multiline = 0;
|
---|
1948 | for (t = p; t <= q; t++) {
|
---|
1949 | if (*t == '\n') {
|
---|
1950 | multiline = 1;
|
---|
1951 | break;
|
---|
1952 | }
|
---|
1953 | }
|
---|
1954 |
|
---|
1955 | *start = p;
|
---|
1956 | *stop = q;
|
---|
1957 | dot = save_dot;
|
---|
1958 | return multiline;
|
---|
1959 | }
|
---|
1960 |
|
---|
1961 | static int st_test(char *p, int type, int dir, char *tested)
|
---|
1962 | {
|
---|
1963 | char c, c0, ci;
|
---|
1964 | int test, inc;
|
---|
1965 |
|
---|
1966 | inc = dir;
|
---|
1967 | c = c0 = p[0];
|
---|
1968 | ci = p[inc];
|
---|
1969 | test = 0;
|
---|
1970 |
|
---|
1971 | if (type == S_BEFORE_WS) {
|
---|
1972 | c = ci;
|
---|
1973 | test = (!isspace(c) || c == '\n');
|
---|
1974 | }
|
---|
1975 | if (type == S_TO_WS) {
|
---|
1976 | c = c0;
|
---|
1977 | test = (!isspace(c) || c == '\n');
|
---|
1978 | }
|
---|
1979 | if (type == S_OVER_WS) {
|
---|
1980 | c = c0;
|
---|
1981 | test = isspace(c);
|
---|
1982 | }
|
---|
1983 | if (type == S_END_PUNCT) {
|
---|
1984 | c = ci;
|
---|
1985 | test = ispunct(c);
|
---|
1986 | }
|
---|
1987 | if (type == S_END_ALNUM) {
|
---|
1988 | c = ci;
|
---|
1989 | test = (isalnum(c) || c == '_');
|
---|
1990 | }
|
---|
1991 | *tested = c;
|
---|
1992 | return test;
|
---|
1993 | }
|
---|
1994 |
|
---|
1995 | static char *skip_thing(char *p, int linecnt, int dir, int type)
|
---|
1996 | {
|
---|
1997 | char c;
|
---|
1998 |
|
---|
1999 | while (st_test(p, type, dir, &c)) {
|
---|
2000 | // make sure we limit search to correct number of lines
|
---|
2001 | if (c == '\n' && --linecnt < 1)
|
---|
2002 | break;
|
---|
2003 | if (dir >= 0 && p >= end - 1)
|
---|
2004 | break;
|
---|
2005 | if (dir < 0 && p <= text)
|
---|
2006 | break;
|
---|
2007 | p += dir; // move to next char
|
---|
2008 | }
|
---|
2009 | return p;
|
---|
2010 | }
|
---|
2011 |
|
---|
2012 | // find matching char of pair () [] {}
|
---|
2013 | static char *find_pair(char *p, const char c)
|
---|
2014 | {
|
---|
2015 | char match, *q;
|
---|
2016 | int dir, level;
|
---|
2017 |
|
---|
2018 | match = ')';
|
---|
2019 | level = 1;
|
---|
2020 | dir = 1; // assume forward
|
---|
2021 | switch (c) {
|
---|
2022 | case '(': match = ')'; break;
|
---|
2023 | case '[': match = ']'; break;
|
---|
2024 | case '{': match = '}'; break;
|
---|
2025 | case ')': match = '('; dir = -1; break;
|
---|
2026 | case ']': match = '['; dir = -1; break;
|
---|
2027 | case '}': match = '{'; dir = -1; break;
|
---|
2028 | }
|
---|
2029 | for (q = p + dir; text <= q && q < end; q += dir) {
|
---|
2030 | // look for match, count levels of pairs (( ))
|
---|
2031 | if (*q == c)
|
---|
2032 | level++; // increase pair levels
|
---|
2033 | if (*q == match)
|
---|
2034 | level--; // reduce pair level
|
---|
2035 | if (level == 0)
|
---|
2036 | break; // found matching pair
|
---|
2037 | }
|
---|
2038 | if (level != 0)
|
---|
2039 | q = NULL; // indicate no match
|
---|
2040 | return q;
|
---|
2041 | }
|
---|
2042 |
|
---|
2043 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
2044 | // show the matching char of a pair, () [] {}
|
---|
2045 | static void showmatching(char *p)
|
---|
2046 | {
|
---|
2047 | char *q, *save_dot;
|
---|
2048 |
|
---|
2049 | // we found half of a pair
|
---|
2050 | q = find_pair(p, *p); // get loc of matching char
|
---|
2051 | if (q == NULL) {
|
---|
2052 | indicate_error('3'); // no matching char
|
---|
2053 | } else {
|
---|
2054 | // "q" now points to matching pair
|
---|
2055 | save_dot = dot; // remember where we are
|
---|
2056 | dot = q; // go to new loc
|
---|
2057 | refresh(FALSE); // let the user see it
|
---|
2058 | mysleep(40); // give user some time
|
---|
2059 | dot = save_dot; // go back to old loc
|
---|
2060 | refresh(FALSE);
|
---|
2061 | }
|
---|
2062 | }
|
---|
2063 | #endif /* FEATURE_VI_SETOPTS */
|
---|
2064 |
|
---|
2065 | // open a hole in text[]
|
---|
2066 | // might reallocate text[]! use p += text_hole_make(p, ...),
|
---|
2067 | // and be careful to not use pointers into potentially freed text[]!
|
---|
2068 | static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole
|
---|
2069 | {
|
---|
2070 | uintptr_t bias = 0;
|
---|
2071 |
|
---|
2072 | if (size <= 0)
|
---|
2073 | return bias;
|
---|
2074 | end += size; // adjust the new END
|
---|
2075 | if (end >= (text + text_size)) {
|
---|
2076 | char *new_text;
|
---|
2077 | text_size += end - (text + text_size) + 10240;
|
---|
2078 | new_text = xrealloc(text, text_size);
|
---|
2079 | bias = (new_text - text);
|
---|
2080 | screenbegin += bias;
|
---|
2081 | dot += bias;
|
---|
2082 | end += bias;
|
---|
2083 | p += bias;
|
---|
2084 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2085 | {
|
---|
2086 | int i;
|
---|
2087 | for (i = 0; i < ARRAY_SIZE(mark); i++)
|
---|
2088 | if (mark[i])
|
---|
2089 | mark[i] += bias;
|
---|
2090 | }
|
---|
2091 | #endif
|
---|
2092 | text = new_text;
|
---|
2093 | }
|
---|
2094 | memmove(p + size, p, end - size - p);
|
---|
2095 | memset(p, ' ', size); // clear new hole
|
---|
2096 | file_modified++;
|
---|
2097 | return bias;
|
---|
2098 | }
|
---|
2099 |
|
---|
2100 | // close a hole in text[]
|
---|
2101 | static char *text_hole_delete(char *p, char *q) // delete "p" through "q", inclusive
|
---|
2102 | {
|
---|
2103 | char *src, *dest;
|
---|
2104 | int cnt, hole_size;
|
---|
2105 |
|
---|
2106 | // move forwards, from beginning
|
---|
2107 | // assume p <= q
|
---|
2108 | src = q + 1;
|
---|
2109 | dest = p;
|
---|
2110 | if (q < p) { // they are backward- swap them
|
---|
2111 | src = p + 1;
|
---|
2112 | dest = q;
|
---|
2113 | }
|
---|
2114 | hole_size = q - p + 1;
|
---|
2115 | cnt = end - src;
|
---|
2116 | if (src < text || src > end)
|
---|
2117 | goto thd0;
|
---|
2118 | if (dest < text || dest >= end)
|
---|
2119 | goto thd0;
|
---|
2120 | if (src >= end)
|
---|
2121 | goto thd_atend; // just delete the end of the buffer
|
---|
2122 | memmove(dest, src, cnt);
|
---|
2123 | thd_atend:
|
---|
2124 | end = end - hole_size; // adjust the new END
|
---|
2125 | if (dest >= end)
|
---|
2126 | dest = end - 1; // make sure dest in below end-1
|
---|
2127 | if (end <= text)
|
---|
2128 | dest = end = text; // keep pointers valid
|
---|
2129 | file_modified++;
|
---|
2130 | thd0:
|
---|
2131 | return dest;
|
---|
2132 | }
|
---|
2133 |
|
---|
2134 | // copy text into register, then delete text.
|
---|
2135 | // if dist <= 0, do not include, or go past, a NewLine
|
---|
2136 | //
|
---|
2137 | static char *yank_delete(char *start, char *stop, int dist, int yf)
|
---|
2138 | {
|
---|
2139 | char *p;
|
---|
2140 |
|
---|
2141 | // make sure start <= stop
|
---|
2142 | if (start > stop) {
|
---|
2143 | // they are backwards, reverse them
|
---|
2144 | p = start;
|
---|
2145 | start = stop;
|
---|
2146 | stop = p;
|
---|
2147 | }
|
---|
2148 | if (dist <= 0) {
|
---|
2149 | // we cannot cross NL boundaries
|
---|
2150 | p = start;
|
---|
2151 | if (*p == '\n')
|
---|
2152 | return p;
|
---|
2153 | // dont go past a NewLine
|
---|
2154 | for (; p + 1 <= stop; p++) {
|
---|
2155 | if (p[1] == '\n') {
|
---|
2156 | stop = p; // "stop" just before NewLine
|
---|
2157 | break;
|
---|
2158 | }
|
---|
2159 | }
|
---|
2160 | }
|
---|
2161 | p = start;
|
---|
2162 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2163 | text_yank(start, stop, YDreg);
|
---|
2164 | #endif
|
---|
2165 | if (yf == YANKDEL) {
|
---|
2166 | p = text_hole_delete(start, stop);
|
---|
2167 | } // delete lines
|
---|
2168 | return p;
|
---|
2169 | }
|
---|
2170 |
|
---|
2171 | static void show_help(void)
|
---|
2172 | {
|
---|
2173 | puts("These features are available:"
|
---|
2174 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
2175 | "\n\tPattern searches with / and ?"
|
---|
2176 | #endif
|
---|
2177 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2178 | "\n\tLast command repeat with ."
|
---|
2179 | #endif
|
---|
2180 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2181 | "\n\tLine marking with 'x"
|
---|
2182 | "\n\tNamed buffers with \"x"
|
---|
2183 | #endif
|
---|
2184 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2185 | //not implemented: "\n\tReadonly if vi is called as \"view\""
|
---|
2186 | //redundant: usage text says this too: "\n\tReadonly with -R command line arg"
|
---|
2187 | #endif
|
---|
2188 | #if ENABLE_FEATURE_VI_SET
|
---|
2189 | "\n\tSome colon mode commands with :"
|
---|
2190 | #endif
|
---|
2191 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
2192 | "\n\tSettable options with \":set\""
|
---|
2193 | #endif
|
---|
2194 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
2195 | "\n\tSignal catching- ^C"
|
---|
2196 | "\n\tJob suspend and resume with ^Z"
|
---|
2197 | #endif
|
---|
2198 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
---|
2199 | "\n\tAdapt to window re-sizes"
|
---|
2200 | #endif
|
---|
2201 | );
|
---|
2202 | }
|
---|
2203 |
|
---|
2204 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2205 | static void start_new_cmd_q(char c)
|
---|
2206 | {
|
---|
2207 | // get buffer for new cmd
|
---|
2208 | // if there is a current cmd count put it in the buffer first
|
---|
2209 | if (cmdcnt > 0) {
|
---|
2210 | lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
|
---|
2211 | } else { // just save char c onto queue
|
---|
2212 | last_modifying_cmd[0] = c;
|
---|
2213 | lmc_len = 1;
|
---|
2214 | }
|
---|
2215 | adding2q = 1;
|
---|
2216 | }
|
---|
2217 |
|
---|
2218 | static void end_cmd_q(void)
|
---|
2219 | {
|
---|
2220 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2221 | YDreg = 26; // go back to default Yank/Delete reg
|
---|
2222 | #endif
|
---|
2223 | adding2q = 0;
|
---|
2224 | }
|
---|
2225 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
2226 |
|
---|
2227 | #if ENABLE_FEATURE_VI_YANKMARK \
|
---|
2228 | || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \
|
---|
2229 | || ENABLE_FEATURE_VI_CRASHME
|
---|
2230 | // might reallocate text[]! use p += string_insert(p, ...),
|
---|
2231 | // and be careful to not use pointers into potentially freed text[]!
|
---|
2232 | static uintptr_t string_insert(char *p, const char *s) // insert the string at 'p'
|
---|
2233 | {
|
---|
2234 | uintptr_t bias;
|
---|
2235 | int i;
|
---|
2236 |
|
---|
2237 | i = strlen(s);
|
---|
2238 | bias = text_hole_make(p, i);
|
---|
2239 | p += bias;
|
---|
2240 | memcpy(p, s, i);
|
---|
2241 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2242 | {
|
---|
2243 | int cnt;
|
---|
2244 | for (cnt = 0; *s != '\0'; s++) {
|
---|
2245 | if (*s == '\n')
|
---|
2246 | cnt++;
|
---|
2247 | }
|
---|
2248 | status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
|
---|
2249 | }
|
---|
2250 | #endif
|
---|
2251 | return bias;
|
---|
2252 | }
|
---|
2253 | #endif
|
---|
2254 |
|
---|
2255 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2256 | static char *text_yank(char *p, char *q, int dest) // copy text into a register
|
---|
2257 | {
|
---|
2258 | int cnt = q - p;
|
---|
2259 | if (cnt < 0) { // they are backwards- reverse them
|
---|
2260 | p = q;
|
---|
2261 | cnt = -cnt;
|
---|
2262 | }
|
---|
2263 | free(reg[dest]); // if already a yank register, free it
|
---|
2264 | reg[dest] = xstrndup(p, cnt + 1);
|
---|
2265 | return p;
|
---|
2266 | }
|
---|
2267 |
|
---|
2268 | static char what_reg(void)
|
---|
2269 | {
|
---|
2270 | char c;
|
---|
2271 |
|
---|
2272 | c = 'D'; // default to D-reg
|
---|
2273 | if (0 <= YDreg && YDreg <= 25)
|
---|
2274 | c = 'a' + (char) YDreg;
|
---|
2275 | if (YDreg == 26)
|
---|
2276 | c = 'D';
|
---|
2277 | if (YDreg == 27)
|
---|
2278 | c = 'U';
|
---|
2279 | return c;
|
---|
2280 | }
|
---|
2281 |
|
---|
2282 | static void check_context(char cmd)
|
---|
2283 | {
|
---|
2284 | // A context is defined to be "modifying text"
|
---|
2285 | // Any modifying command establishes a new context.
|
---|
2286 |
|
---|
2287 | if (dot < context_start || dot > context_end) {
|
---|
2288 | if (strchr(modifying_cmds, cmd) != NULL) {
|
---|
2289 | // we are trying to modify text[]- make this the current context
|
---|
2290 | mark[27] = mark[26]; // move cur to prev
|
---|
2291 | mark[26] = dot; // move local to cur
|
---|
2292 | context_start = prev_line(prev_line(dot));
|
---|
2293 | context_end = next_line(next_line(dot));
|
---|
2294 | //loiter= start_loiter= now;
|
---|
2295 | }
|
---|
2296 | }
|
---|
2297 | }
|
---|
2298 |
|
---|
2299 | static char *swap_context(char *p) // goto new context for '' command make this the current context
|
---|
2300 | {
|
---|
2301 | char *tmp;
|
---|
2302 |
|
---|
2303 | // the current context is in mark[26]
|
---|
2304 | // the previous context is in mark[27]
|
---|
2305 | // only swap context if other context is valid
|
---|
2306 | if (text <= mark[27] && mark[27] <= end - 1) {
|
---|
2307 | tmp = mark[27];
|
---|
2308 | mark[27] = mark[26];
|
---|
2309 | mark[26] = tmp;
|
---|
2310 | p = mark[26]; // where we are going- previous context
|
---|
2311 | context_start = prev_line(prev_line(prev_line(p)));
|
---|
2312 | context_end = next_line(next_line(next_line(p)));
|
---|
2313 | }
|
---|
2314 | return p;
|
---|
2315 | }
|
---|
2316 | #endif /* FEATURE_VI_YANKMARK */
|
---|
2317 |
|
---|
2318 | //----- Set terminal attributes --------------------------------
|
---|
2319 | static void rawmode(void)
|
---|
2320 | {
|
---|
2321 | tcgetattr(0, &term_orig);
|
---|
2322 | term_vi = term_orig;
|
---|
2323 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG on - allow intr's
|
---|
2324 | term_vi.c_iflag &= (~IXON & ~ICRNL);
|
---|
2325 | term_vi.c_oflag &= (~ONLCR);
|
---|
2326 | term_vi.c_cc[VMIN] = 1;
|
---|
2327 | term_vi.c_cc[VTIME] = 0;
|
---|
2328 | erase_char = term_vi.c_cc[VERASE];
|
---|
2329 | tcsetattr_stdin_TCSANOW(&term_vi);
|
---|
2330 | }
|
---|
2331 |
|
---|
2332 | static void cookmode(void)
|
---|
2333 | {
|
---|
2334 | fflush_all();
|
---|
2335 | tcsetattr_stdin_TCSANOW(&term_orig);
|
---|
2336 | }
|
---|
2337 |
|
---|
2338 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
2339 | //----- Come here when we get a window resize signal ---------
|
---|
2340 | static void winch_sig(int sig UNUSED_PARAM)
|
---|
2341 | {
|
---|
2342 | int save_errno = errno;
|
---|
2343 | // FIXME: do it in main loop!!!
|
---|
2344 | signal(SIGWINCH, winch_sig);
|
---|
2345 | query_screen_dimensions();
|
---|
2346 | new_screen(rows, columns); // get memory for virtual screen
|
---|
2347 | redraw(TRUE); // re-draw the screen
|
---|
2348 | errno = save_errno;
|
---|
2349 | }
|
---|
2350 |
|
---|
2351 | //----- Come here when we get a continue signal -------------------
|
---|
2352 | static void cont_sig(int sig UNUSED_PARAM)
|
---|
2353 | {
|
---|
2354 | int save_errno = errno;
|
---|
2355 | rawmode(); // terminal to "raw"
|
---|
2356 | last_status_cksum = 0; // force status update
|
---|
2357 | redraw(TRUE); // re-draw the screen
|
---|
2358 |
|
---|
2359 | signal(SIGTSTP, suspend_sig);
|
---|
2360 | signal(SIGCONT, SIG_DFL);
|
---|
2361 | //kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
|
---|
2362 | errno = save_errno;
|
---|
2363 | }
|
---|
2364 |
|
---|
2365 | //----- Come here when we get a Suspend signal -------------------
|
---|
2366 | static void suspend_sig(int sig UNUSED_PARAM)
|
---|
2367 | {
|
---|
2368 | int save_errno = errno;
|
---|
2369 | go_bottom_and_clear_to_eol();
|
---|
2370 | cookmode(); // terminal to "cooked"
|
---|
2371 |
|
---|
2372 | signal(SIGCONT, cont_sig);
|
---|
2373 | signal(SIGTSTP, SIG_DFL);
|
---|
2374 | kill(my_pid, SIGTSTP);
|
---|
2375 | errno = save_errno;
|
---|
2376 | }
|
---|
2377 |
|
---|
2378 | //----- Come here when we get a signal ---------------------------
|
---|
2379 | static void catch_sig(int sig)
|
---|
2380 | {
|
---|
2381 | signal(SIGINT, catch_sig);
|
---|
2382 | siglongjmp(restart, sig);
|
---|
2383 | }
|
---|
2384 | #endif /* FEATURE_VI_USE_SIGNALS */
|
---|
2385 |
|
---|
2386 | static int mysleep(int hund) // sleep for 'hund' 1/100 seconds or stdin ready
|
---|
2387 | {
|
---|
2388 | struct pollfd pfd[1];
|
---|
2389 |
|
---|
2390 | pfd[0].fd = STDIN_FILENO;
|
---|
2391 | pfd[0].events = POLLIN;
|
---|
2392 | return safe_poll(pfd, 1, hund*10) > 0;
|
---|
2393 | }
|
---|
2394 |
|
---|
2395 | //----- IO Routines --------------------------------------------
|
---|
2396 | static int readit(void) // read (maybe cursor) key from stdin
|
---|
2397 | {
|
---|
2398 | int c;
|
---|
2399 |
|
---|
2400 | fflush_all();
|
---|
2401 | c = read_key(STDIN_FILENO, readbuffer, /*timeout off:*/ -2);
|
---|
2402 | if (c == -1) { // EOF/error
|
---|
2403 | go_bottom_and_clear_to_eol();
|
---|
2404 | cookmode(); // terminal to "cooked"
|
---|
2405 | bb_error_msg_and_die("can't read user input");
|
---|
2406 | }
|
---|
2407 | return c;
|
---|
2408 | }
|
---|
2409 |
|
---|
2410 | //----- IO Routines --------------------------------------------
|
---|
2411 | static int get_one_char(void)
|
---|
2412 | {
|
---|
2413 | int c;
|
---|
2414 |
|
---|
2415 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2416 | if (!adding2q) {
|
---|
2417 | // we are not adding to the q.
|
---|
2418 | // but, we may be reading from a q
|
---|
2419 | if (ioq == 0) {
|
---|
2420 | // there is no current q, read from STDIN
|
---|
2421 | c = readit(); // get the users input
|
---|
2422 | } else {
|
---|
2423 | // there is a queue to get chars from first
|
---|
2424 | // careful with correct sign expansion!
|
---|
2425 | c = (unsigned char)*ioq++;
|
---|
2426 | if (c == '\0') {
|
---|
2427 | // the end of the q, read from STDIN
|
---|
2428 | free(ioq_start);
|
---|
2429 | ioq_start = ioq = 0;
|
---|
2430 | c = readit(); // get the users input
|
---|
2431 | }
|
---|
2432 | }
|
---|
2433 | } else {
|
---|
2434 | // adding STDIN chars to q
|
---|
2435 | c = readit(); // get the users input
|
---|
2436 | if (lmc_len >= MAX_INPUT_LEN - 1) {
|
---|
2437 | status_line_bold("last_modifying_cmd overrun");
|
---|
2438 | } else {
|
---|
2439 | // add new char to q
|
---|
2440 | last_modifying_cmd[lmc_len++] = c;
|
---|
2441 | }
|
---|
2442 | }
|
---|
2443 | #else
|
---|
2444 | c = readit(); // get the users input
|
---|
2445 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
2446 | return c;
|
---|
2447 | }
|
---|
2448 |
|
---|
2449 | // Get input line (uses "status line" area)
|
---|
2450 | static char *get_input_line(const char *prompt)
|
---|
2451 | {
|
---|
2452 | // char [MAX_INPUT_LEN]
|
---|
2453 | #define buf get_input_line__buf
|
---|
2454 |
|
---|
2455 | int c;
|
---|
2456 | int i;
|
---|
2457 |
|
---|
2458 | strcpy(buf, prompt);
|
---|
2459 | last_status_cksum = 0; // force status update
|
---|
2460 | go_bottom_and_clear_to_eol();
|
---|
2461 | write1(prompt); // write out the :, /, or ? prompt
|
---|
2462 |
|
---|
2463 | i = strlen(buf);
|
---|
2464 | while (i < MAX_INPUT_LEN) {
|
---|
2465 | c = get_one_char();
|
---|
2466 | if (c == '\n' || c == '\r' || c == 27)
|
---|
2467 | break; // this is end of input
|
---|
2468 | if (c == erase_char || c == 8 || c == 127) {
|
---|
2469 | // user wants to erase prev char
|
---|
2470 | buf[--i] = '\0';
|
---|
2471 | write1("\b \b"); // erase char on screen
|
---|
2472 | if (i <= 0) // user backs up before b-o-l, exit
|
---|
2473 | break;
|
---|
2474 | } else if (c > 0 && c < 256) { // exclude Unicode
|
---|
2475 | // (TODO: need to handle Unicode)
|
---|
2476 | buf[i] = c;
|
---|
2477 | buf[++i] = '\0';
|
---|
2478 | bb_putchar(c);
|
---|
2479 | }
|
---|
2480 | }
|
---|
2481 | refresh(FALSE);
|
---|
2482 | return buf;
|
---|
2483 | #undef buf
|
---|
2484 | }
|
---|
2485 |
|
---|
2486 | static int file_size(const char *fn) // what is the byte size of "fn"
|
---|
2487 | {
|
---|
2488 | struct stat st_buf;
|
---|
2489 | int cnt;
|
---|
2490 |
|
---|
2491 | cnt = -1;
|
---|
2492 | if (fn && stat(fn, &st_buf) == 0) // see if file exists
|
---|
2493 | cnt = (int) st_buf.st_size;
|
---|
2494 | return cnt;
|
---|
2495 | }
|
---|
2496 |
|
---|
2497 | // might reallocate text[]!
|
---|
2498 | static int file_insert(const char *fn, char *p, int update_ro_status)
|
---|
2499 | {
|
---|
2500 | int cnt = -1;
|
---|
2501 | int fd, size;
|
---|
2502 | struct stat statbuf;
|
---|
2503 |
|
---|
2504 | /* Validate file */
|
---|
2505 | if (stat(fn, &statbuf) < 0) {
|
---|
2506 | status_line_bold("\"%s\" %s", fn, strerror(errno));
|
---|
2507 | goto fi0;
|
---|
2508 | }
|
---|
2509 | if (!S_ISREG(statbuf.st_mode)) {
|
---|
2510 | // This is not a regular file
|
---|
2511 | status_line_bold("\"%s\" Not a regular file", fn);
|
---|
2512 | goto fi0;
|
---|
2513 | }
|
---|
2514 | if (p < text || p > end) {
|
---|
2515 | status_line_bold("Trying to insert file outside of memory");
|
---|
2516 | goto fi0;
|
---|
2517 | }
|
---|
2518 |
|
---|
2519 | // read file to buffer
|
---|
2520 | fd = open(fn, O_RDONLY);
|
---|
2521 | if (fd < 0) {
|
---|
2522 | status_line_bold("\"%s\" %s", fn, strerror(errno));
|
---|
2523 | goto fi0;
|
---|
2524 | }
|
---|
2525 | size = statbuf.st_size;
|
---|
2526 | p += text_hole_make(p, size);
|
---|
2527 | cnt = safe_read(fd, p, size);
|
---|
2528 | if (cnt < 0) {
|
---|
2529 | status_line_bold("\"%s\" %s", fn, strerror(errno));
|
---|
2530 | p = text_hole_delete(p, p + size - 1); // un-do buffer insert
|
---|
2531 | } else if (cnt < size) {
|
---|
2532 | // There was a partial read, shrink unused space text[]
|
---|
2533 | p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert
|
---|
2534 | status_line_bold("can't read all of file \"%s\"", fn);
|
---|
2535 | }
|
---|
2536 | if (cnt >= size)
|
---|
2537 | file_modified++;
|
---|
2538 | close(fd);
|
---|
2539 | fi0:
|
---|
2540 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2541 | if (update_ro_status
|
---|
2542 | && ((access(fn, W_OK) < 0) ||
|
---|
2543 | /* root will always have access()
|
---|
2544 | * so we check fileperms too */
|
---|
2545 | !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH))
|
---|
2546 | )
|
---|
2547 | ) {
|
---|
2548 | SET_READONLY_FILE(readonly_mode);
|
---|
2549 | }
|
---|
2550 | #endif
|
---|
2551 | return cnt;
|
---|
2552 | }
|
---|
2553 |
|
---|
2554 | static int file_write(char *fn, char *first, char *last)
|
---|
2555 | {
|
---|
2556 | int fd, cnt, charcnt;
|
---|
2557 |
|
---|
2558 | if (fn == 0) {
|
---|
2559 | status_line_bold("No current filename");
|
---|
2560 | return -2;
|
---|
2561 | }
|
---|
2562 | /* By popular request we do not open file with O_TRUNC,
|
---|
2563 | * but instead ftruncate() it _after_ successful write.
|
---|
2564 | * Might reduce amount of data lost on power fail etc.
|
---|
2565 | */
|
---|
2566 | fd = open(fn, (O_WRONLY | O_CREAT), 0666);
|
---|
2567 | if (fd < 0)
|
---|
2568 | return -1;
|
---|
2569 | cnt = last - first + 1;
|
---|
2570 | charcnt = full_write(fd, first, cnt);
|
---|
2571 | ftruncate(fd, charcnt);
|
---|
2572 | if (charcnt == cnt) {
|
---|
2573 | // good write
|
---|
2574 | //file_modified = FALSE;
|
---|
2575 | } else {
|
---|
2576 | charcnt = 0;
|
---|
2577 | }
|
---|
2578 | close(fd);
|
---|
2579 | return charcnt;
|
---|
2580 | }
|
---|
2581 |
|
---|
2582 | //----- Terminal Drawing ---------------------------------------
|
---|
2583 | // The terminal is made up of 'rows' line of 'columns' columns.
|
---|
2584 | // classically this would be 24 x 80.
|
---|
2585 | // screen coordinates
|
---|
2586 | // 0,0 ... 0,79
|
---|
2587 | // 1,0 ... 1,79
|
---|
2588 | // . ... .
|
---|
2589 | // . ... .
|
---|
2590 | // 22,0 ... 22,79
|
---|
2591 | // 23,0 ... 23,79 <- status line
|
---|
2592 |
|
---|
2593 | //----- Move the cursor to row x col (count from 0, not 1) -------
|
---|
2594 | static void place_cursor(int row, int col)
|
---|
2595 | {
|
---|
2596 | char cm1[sizeof(ESC_SET_CURSOR_POS) + sizeof(int)*3 * 2];
|
---|
2597 |
|
---|
2598 | if (row < 0) row = 0;
|
---|
2599 | if (row >= rows) row = rows - 1;
|
---|
2600 | if (col < 0) col = 0;
|
---|
2601 | if (col >= columns) col = columns - 1;
|
---|
2602 |
|
---|
2603 | sprintf(cm1, ESC_SET_CURSOR_POS, row + 1, col + 1);
|
---|
2604 | write1(cm1);
|
---|
2605 | }
|
---|
2606 |
|
---|
2607 | //----- Erase from cursor to end of line -----------------------
|
---|
2608 | static void clear_to_eol(void)
|
---|
2609 | {
|
---|
2610 | write1(ESC_CLEAR2EOL);
|
---|
2611 | }
|
---|
2612 |
|
---|
2613 | static void go_bottom_and_clear_to_eol(void)
|
---|
2614 | {
|
---|
2615 | place_cursor(rows - 1, 0);
|
---|
2616 | clear_to_eol();
|
---|
2617 | }
|
---|
2618 |
|
---|
2619 | //----- Erase from cursor to end of screen -----------------------
|
---|
2620 | static void clear_to_eos(void)
|
---|
2621 | {
|
---|
2622 | write1(ESC_CLEAR2EOS);
|
---|
2623 | }
|
---|
2624 |
|
---|
2625 | //----- Start standout mode ------------------------------------
|
---|
2626 | static void standout_start(void)
|
---|
2627 | {
|
---|
2628 | write1(ESC_BOLD_TEXT);
|
---|
2629 | }
|
---|
2630 |
|
---|
2631 | //----- End standout mode --------------------------------------
|
---|
2632 | static void standout_end(void)
|
---|
2633 | {
|
---|
2634 | write1(ESC_NORM_TEXT);
|
---|
2635 | }
|
---|
2636 |
|
---|
2637 | //----- Flash the screen --------------------------------------
|
---|
2638 | static void flash(int h)
|
---|
2639 | {
|
---|
2640 | standout_start();
|
---|
2641 | redraw(TRUE);
|
---|
2642 | mysleep(h);
|
---|
2643 | standout_end();
|
---|
2644 | redraw(TRUE);
|
---|
2645 | }
|
---|
2646 |
|
---|
2647 | static void Indicate_Error(void)
|
---|
2648 | {
|
---|
2649 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
2650 | if (crashme > 0)
|
---|
2651 | return; // generate a random command
|
---|
2652 | #endif
|
---|
2653 | if (!err_method) {
|
---|
2654 | write1(ESC_BELL);
|
---|
2655 | } else {
|
---|
2656 | flash(10);
|
---|
2657 | }
|
---|
2658 | }
|
---|
2659 |
|
---|
2660 | //----- Screen[] Routines --------------------------------------
|
---|
2661 | //----- Erase the Screen[] memory ------------------------------
|
---|
2662 | static void screen_erase(void)
|
---|
2663 | {
|
---|
2664 | memset(screen, ' ', screensize); // clear new screen
|
---|
2665 | }
|
---|
2666 |
|
---|
2667 | static int bufsum(char *buf, int count)
|
---|
2668 | {
|
---|
2669 | int sum = 0;
|
---|
2670 | char *e = buf + count;
|
---|
2671 |
|
---|
2672 | while (buf < e)
|
---|
2673 | sum += (unsigned char) *buf++;
|
---|
2674 | return sum;
|
---|
2675 | }
|
---|
2676 |
|
---|
2677 | //----- Draw the status line at bottom of the screen -------------
|
---|
2678 | static void show_status_line(void)
|
---|
2679 | {
|
---|
2680 | int cnt = 0, cksum = 0;
|
---|
2681 |
|
---|
2682 | // either we already have an error or status message, or we
|
---|
2683 | // create one.
|
---|
2684 | if (!have_status_msg) {
|
---|
2685 | cnt = format_edit_status();
|
---|
2686 | cksum = bufsum(status_buffer, cnt);
|
---|
2687 | }
|
---|
2688 | if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
|
---|
2689 | last_status_cksum = cksum; // remember if we have seen this line
|
---|
2690 | go_bottom_and_clear_to_eol();
|
---|
2691 | write1(status_buffer);
|
---|
2692 | if (have_status_msg) {
|
---|
2693 | if (((int)strlen(status_buffer) - (have_status_msg - 1)) >
|
---|
2694 | (columns - 1) ) {
|
---|
2695 | have_status_msg = 0;
|
---|
2696 | Hit_Return();
|
---|
2697 | }
|
---|
2698 | have_status_msg = 0;
|
---|
2699 | }
|
---|
2700 | place_cursor(crow, ccol); // put cursor back in correct place
|
---|
2701 | }
|
---|
2702 | fflush_all();
|
---|
2703 | }
|
---|
2704 |
|
---|
2705 | //----- format the status buffer, the bottom line of screen ------
|
---|
2706 | // format status buffer, with STANDOUT mode
|
---|
2707 | static void status_line_bold(const char *format, ...)
|
---|
2708 | {
|
---|
2709 | va_list args;
|
---|
2710 |
|
---|
2711 | va_start(args, format);
|
---|
2712 | strcpy(status_buffer, ESC_BOLD_TEXT);
|
---|
2713 | vsprintf(status_buffer + sizeof(ESC_BOLD_TEXT)-1, format, args);
|
---|
2714 | strcat(status_buffer, ESC_NORM_TEXT);
|
---|
2715 | va_end(args);
|
---|
2716 |
|
---|
2717 | have_status_msg = 1 + sizeof(ESC_BOLD_TEXT) + sizeof(ESC_NORM_TEXT) - 2;
|
---|
2718 | }
|
---|
2719 |
|
---|
2720 | // format status buffer
|
---|
2721 | static void status_line(const char *format, ...)
|
---|
2722 | {
|
---|
2723 | va_list args;
|
---|
2724 |
|
---|
2725 | va_start(args, format);
|
---|
2726 | vsprintf(status_buffer, format, args);
|
---|
2727 | va_end(args);
|
---|
2728 |
|
---|
2729 | have_status_msg = 1;
|
---|
2730 | }
|
---|
2731 |
|
---|
2732 | // copy s to buf, convert unprintable
|
---|
2733 | static void print_literal(char *buf, const char *s)
|
---|
2734 | {
|
---|
2735 | char *d;
|
---|
2736 | unsigned char c;
|
---|
2737 |
|
---|
2738 | buf[0] = '\0';
|
---|
2739 | if (!s[0])
|
---|
2740 | s = "(NULL)";
|
---|
2741 |
|
---|
2742 | d = buf;
|
---|
2743 | for (; *s; s++) {
|
---|
2744 | int c_is_no_print;
|
---|
2745 |
|
---|
2746 | c = *s;
|
---|
2747 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
2748 | if (c_is_no_print) {
|
---|
2749 | strcpy(d, ESC_NORM_TEXT);
|
---|
2750 | d += sizeof(ESC_NORM_TEXT)-1;
|
---|
2751 | c = '.';
|
---|
2752 | }
|
---|
2753 | if (c < ' ' || c == 0x7f) {
|
---|
2754 | *d++ = '^';
|
---|
2755 | c |= '@'; /* 0x40 */
|
---|
2756 | if (c == 0x7f)
|
---|
2757 | c = '?';
|
---|
2758 | }
|
---|
2759 | *d++ = c;
|
---|
2760 | *d = '\0';
|
---|
2761 | if (c_is_no_print) {
|
---|
2762 | strcpy(d, ESC_BOLD_TEXT);
|
---|
2763 | d += sizeof(ESC_BOLD_TEXT)-1;
|
---|
2764 | }
|
---|
2765 | if (*s == '\n') {
|
---|
2766 | *d++ = '$';
|
---|
2767 | *d = '\0';
|
---|
2768 | }
|
---|
2769 | if (d - buf > MAX_INPUT_LEN - 10) // paranoia
|
---|
2770 | break;
|
---|
2771 | }
|
---|
2772 | }
|
---|
2773 |
|
---|
2774 | static void not_implemented(const char *s)
|
---|
2775 | {
|
---|
2776 | char buf[MAX_INPUT_LEN];
|
---|
2777 |
|
---|
2778 | print_literal(buf, s);
|
---|
2779 | status_line_bold("\'%s\' is not implemented", buf);
|
---|
2780 | }
|
---|
2781 |
|
---|
2782 | // show file status on status line
|
---|
2783 | static int format_edit_status(void)
|
---|
2784 | {
|
---|
2785 | static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
|
---|
2786 |
|
---|
2787 | #define tot format_edit_status__tot
|
---|
2788 |
|
---|
2789 | int cur, percent, ret, trunc_at;
|
---|
2790 |
|
---|
2791 | // file_modified is now a counter rather than a flag. this
|
---|
2792 | // helps reduce the amount of line counting we need to do.
|
---|
2793 | // (this will cause a mis-reporting of modified status
|
---|
2794 | // once every MAXINT editing operations.)
|
---|
2795 |
|
---|
2796 | // it would be nice to do a similar optimization here -- if
|
---|
2797 | // we haven't done a motion that could have changed which line
|
---|
2798 | // we're on, then we shouldn't have to do this count_lines()
|
---|
2799 | cur = count_lines(text, dot);
|
---|
2800 |
|
---|
2801 | // reduce counting -- the total lines can't have
|
---|
2802 | // changed if we haven't done any edits.
|
---|
2803 | if (file_modified != last_file_modified) {
|
---|
2804 | tot = cur + count_lines(dot, end - 1) - 1;
|
---|
2805 | last_file_modified = file_modified;
|
---|
2806 | }
|
---|
2807 |
|
---|
2808 | // current line percent
|
---|
2809 | // ------------- ~~ ----------
|
---|
2810 | // total lines 100
|
---|
2811 | if (tot > 0) {
|
---|
2812 | percent = (100 * cur) / tot;
|
---|
2813 | } else {
|
---|
2814 | cur = tot = 0;
|
---|
2815 | percent = 100;
|
---|
2816 | }
|
---|
2817 |
|
---|
2818 | trunc_at = columns < STATUS_BUFFER_LEN-1 ?
|
---|
2819 | columns : STATUS_BUFFER_LEN-1;
|
---|
2820 |
|
---|
2821 | ret = snprintf(status_buffer, trunc_at+1,
|
---|
2822 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2823 | "%c %s%s%s %d/%d %d%%",
|
---|
2824 | #else
|
---|
2825 | "%c %s%s %d/%d %d%%",
|
---|
2826 | #endif
|
---|
2827 | cmd_mode_indicator[cmd_mode & 3],
|
---|
2828 | (current_filename != NULL ? current_filename : "No file"),
|
---|
2829 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2830 | (readonly_mode ? " [Readonly]" : ""),
|
---|
2831 | #endif
|
---|
2832 | (file_modified ? " [Modified]" : ""),
|
---|
2833 | cur, tot, percent);
|
---|
2834 |
|
---|
2835 | if (ret >= 0 && ret < trunc_at)
|
---|
2836 | return ret; /* it all fit */
|
---|
2837 |
|
---|
2838 | return trunc_at; /* had to truncate */
|
---|
2839 | #undef tot
|
---|
2840 | }
|
---|
2841 |
|
---|
2842 | //----- Force refresh of all Lines -----------------------------
|
---|
2843 | static void redraw(int full_screen)
|
---|
2844 | {
|
---|
2845 | place_cursor(0, 0);
|
---|
2846 | clear_to_eos();
|
---|
2847 | screen_erase(); // erase the internal screen buffer
|
---|
2848 | last_status_cksum = 0; // force status update
|
---|
2849 | refresh(full_screen); // this will redraw the entire display
|
---|
2850 | show_status_line();
|
---|
2851 | }
|
---|
2852 |
|
---|
2853 | //----- Format a text[] line into a buffer ---------------------
|
---|
2854 | static char* format_line(char *src /*, int li*/)
|
---|
2855 | {
|
---|
2856 | unsigned char c;
|
---|
2857 | int co;
|
---|
2858 | int ofs = offset;
|
---|
2859 | char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2]
|
---|
2860 |
|
---|
2861 | c = '~'; // char in col 0 in non-existent lines is '~'
|
---|
2862 | co = 0;
|
---|
2863 | while (co < columns + tabstop) {
|
---|
2864 | // have we gone past the end?
|
---|
2865 | if (src < end) {
|
---|
2866 | c = *src++;
|
---|
2867 | if (c == '\n')
|
---|
2868 | break;
|
---|
2869 | if ((c & 0x80) && !Isprint(c)) {
|
---|
2870 | c = '.';
|
---|
2871 | }
|
---|
2872 | if (c < ' ' || c == 0x7f) {
|
---|
2873 | if (c == '\t') {
|
---|
2874 | c = ' ';
|
---|
2875 | // co % 8 != 7
|
---|
2876 | while ((co % tabstop) != (tabstop - 1)) {
|
---|
2877 | dest[co++] = c;
|
---|
2878 | }
|
---|
2879 | } else {
|
---|
2880 | dest[co++] = '^';
|
---|
2881 | if (c == 0x7f)
|
---|
2882 | c = '?';
|
---|
2883 | else
|
---|
2884 | c += '@'; // Ctrl-X -> 'X'
|
---|
2885 | }
|
---|
2886 | }
|
---|
2887 | }
|
---|
2888 | dest[co++] = c;
|
---|
2889 | // discard scrolled-off-to-the-left portion,
|
---|
2890 | // in tabstop-sized pieces
|
---|
2891 | if (ofs >= tabstop && co >= tabstop) {
|
---|
2892 | memmove(dest, dest + tabstop, co);
|
---|
2893 | co -= tabstop;
|
---|
2894 | ofs -= tabstop;
|
---|
2895 | }
|
---|
2896 | if (src >= end)
|
---|
2897 | break;
|
---|
2898 | }
|
---|
2899 | // check "short line, gigantic offset" case
|
---|
2900 | if (co < ofs)
|
---|
2901 | ofs = co;
|
---|
2902 | // discard last scrolled off part
|
---|
2903 | co -= ofs;
|
---|
2904 | dest += ofs;
|
---|
2905 | // fill the rest with spaces
|
---|
2906 | if (co < columns)
|
---|
2907 | memset(&dest[co], ' ', columns - co);
|
---|
2908 | return dest;
|
---|
2909 | }
|
---|
2910 |
|
---|
2911 | //----- Refresh the changed screen lines -----------------------
|
---|
2912 | // Copy the source line from text[] into the buffer and note
|
---|
2913 | // if the current screenline is different from the new buffer.
|
---|
2914 | // If they differ then that line needs redrawing on the terminal.
|
---|
2915 | //
|
---|
2916 | static void refresh(int full_screen)
|
---|
2917 | {
|
---|
2918 | #define old_offset refresh__old_offset
|
---|
2919 |
|
---|
2920 | int li, changed;
|
---|
2921 | char *tp, *sp; // pointer into text[] and screen[]
|
---|
2922 |
|
---|
2923 | if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) {
|
---|
2924 | unsigned c = columns, r = rows;
|
---|
2925 | query_screen_dimensions();
|
---|
2926 | full_screen |= (c - columns) | (r - rows);
|
---|
2927 | }
|
---|
2928 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
|
---|
2929 | tp = screenbegin; // index into text[] of top line
|
---|
2930 |
|
---|
2931 | // compare text[] to screen[] and mark screen[] lines that need updating
|
---|
2932 | for (li = 0; li < rows - 1; li++) {
|
---|
2933 | int cs, ce; // column start & end
|
---|
2934 | char *out_buf;
|
---|
2935 | // format current text line
|
---|
2936 | out_buf = format_line(tp /*, li*/);
|
---|
2937 |
|
---|
2938 | // skip to the end of the current text[] line
|
---|
2939 | if (tp < end) {
|
---|
2940 | char *t = memchr(tp, '\n', end - tp);
|
---|
2941 | if (!t) t = end - 1;
|
---|
2942 | tp = t + 1;
|
---|
2943 | }
|
---|
2944 |
|
---|
2945 | // see if there are any changes between vitual screen and out_buf
|
---|
2946 | changed = FALSE; // assume no change
|
---|
2947 | cs = 0;
|
---|
2948 | ce = columns - 1;
|
---|
2949 | sp = &screen[li * columns]; // start of screen line
|
---|
2950 | if (full_screen) {
|
---|
2951 | // force re-draw of every single column from 0 - columns-1
|
---|
2952 | goto re0;
|
---|
2953 | }
|
---|
2954 | // compare newly formatted buffer with virtual screen
|
---|
2955 | // look forward for first difference between buf and screen
|
---|
2956 | for (; cs <= ce; cs++) {
|
---|
2957 | if (out_buf[cs] != sp[cs]) {
|
---|
2958 | changed = TRUE; // mark for redraw
|
---|
2959 | break;
|
---|
2960 | }
|
---|
2961 | }
|
---|
2962 |
|
---|
2963 | // look backward for last difference between out_buf and screen
|
---|
2964 | for (; ce >= cs; ce--) {
|
---|
2965 | if (out_buf[ce] != sp[ce]) {
|
---|
2966 | changed = TRUE; // mark for redraw
|
---|
2967 | break;
|
---|
2968 | }
|
---|
2969 | }
|
---|
2970 | // now, cs is index of first diff, and ce is index of last diff
|
---|
2971 |
|
---|
2972 | // if horz offset has changed, force a redraw
|
---|
2973 | if (offset != old_offset) {
|
---|
2974 | re0:
|
---|
2975 | changed = TRUE;
|
---|
2976 | }
|
---|
2977 |
|
---|
2978 | // make a sanity check of columns indexes
|
---|
2979 | if (cs < 0) cs = 0;
|
---|
2980 | if (ce > columns - 1) ce = columns - 1;
|
---|
2981 | if (cs > ce) { cs = 0; ce = columns - 1; }
|
---|
2982 | // is there a change between vitual screen and out_buf
|
---|
2983 | if (changed) {
|
---|
2984 | // copy changed part of buffer to virtual screen
|
---|
2985 | memcpy(sp+cs, out_buf+cs, ce-cs+1);
|
---|
2986 | place_cursor(li, cs);
|
---|
2987 | // write line out to terminal
|
---|
2988 | fwrite(&sp[cs], ce - cs + 1, 1, stdout);
|
---|
2989 | }
|
---|
2990 | }
|
---|
2991 |
|
---|
2992 | place_cursor(crow, ccol);
|
---|
2993 |
|
---|
2994 | old_offset = offset;
|
---|
2995 | #undef old_offset
|
---|
2996 | }
|
---|
2997 |
|
---|
2998 | //---------------------------------------------------------------------
|
---|
2999 | //----- the Ascii Chart -----------------------------------------------
|
---|
3000 | //
|
---|
3001 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
|
---|
3002 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
|
---|
3003 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
|
---|
3004 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
|
---|
3005 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
|
---|
3006 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
|
---|
3007 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
|
---|
3008 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
|
---|
3009 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
|
---|
3010 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
|
---|
3011 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
|
---|
3012 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
|
---|
3013 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
|
---|
3014 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
|
---|
3015 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
|
---|
3016 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
|
---|
3017 | //---------------------------------------------------------------------
|
---|
3018 |
|
---|
3019 | //----- Execute a Vi Command -----------------------------------
|
---|
3020 | static void do_cmd(int c)
|
---|
3021 | {
|
---|
3022 | char *p, *q, *save_dot;
|
---|
3023 | char buf[12];
|
---|
3024 | int dir;
|
---|
3025 | int cnt, i, j;
|
---|
3026 | int c1;
|
---|
3027 |
|
---|
3028 | // c1 = c; // quiet the compiler
|
---|
3029 | // cnt = yf = 0; // quiet the compiler
|
---|
3030 | // p = q = save_dot = buf; // quiet the compiler
|
---|
3031 | memset(buf, '\0', sizeof(buf));
|
---|
3032 |
|
---|
3033 | show_status_line();
|
---|
3034 |
|
---|
3035 | /* if this is a cursor key, skip these checks */
|
---|
3036 | switch (c) {
|
---|
3037 | case KEYCODE_UP:
|
---|
3038 | case KEYCODE_DOWN:
|
---|
3039 | case KEYCODE_LEFT:
|
---|
3040 | case KEYCODE_RIGHT:
|
---|
3041 | case KEYCODE_HOME:
|
---|
3042 | case KEYCODE_END:
|
---|
3043 | case KEYCODE_PAGEUP:
|
---|
3044 | case KEYCODE_PAGEDOWN:
|
---|
3045 | case KEYCODE_DELETE:
|
---|
3046 | goto key_cmd_mode;
|
---|
3047 | }
|
---|
3048 |
|
---|
3049 | if (cmd_mode == 2) {
|
---|
3050 | // flip-flop Insert/Replace mode
|
---|
3051 | if (c == KEYCODE_INSERT)
|
---|
3052 | goto dc_i;
|
---|
3053 | // we are 'R'eplacing the current *dot with new char
|
---|
3054 | if (*dot == '\n') {
|
---|
3055 | // don't Replace past E-o-l
|
---|
3056 | cmd_mode = 1; // convert to insert
|
---|
3057 | } else {
|
---|
3058 | if (1 <= c || Isprint(c)) {
|
---|
3059 | if (c != 27)
|
---|
3060 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
---|
3061 | dot = char_insert(dot, c); // insert new char
|
---|
3062 | }
|
---|
3063 | goto dc1;
|
---|
3064 | }
|
---|
3065 | }
|
---|
3066 | if (cmd_mode == 1) {
|
---|
3067 | // hitting "Insert" twice means "R" replace mode
|
---|
3068 | if (c == KEYCODE_INSERT) goto dc5;
|
---|
3069 | // insert the char c at "dot"
|
---|
3070 | if (1 <= c || Isprint(c)) {
|
---|
3071 | dot = char_insert(dot, c);
|
---|
3072 | }
|
---|
3073 | goto dc1;
|
---|
3074 | }
|
---|
3075 |
|
---|
3076 | key_cmd_mode:
|
---|
3077 | switch (c) {
|
---|
3078 | //case 0x01: // soh
|
---|
3079 | //case 0x09: // ht
|
---|
3080 | //case 0x0b: // vt
|
---|
3081 | //case 0x0e: // so
|
---|
3082 | //case 0x0f: // si
|
---|
3083 | //case 0x10: // dle
|
---|
3084 | //case 0x11: // dc1
|
---|
3085 | //case 0x13: // dc3
|
---|
3086 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
3087 | case 0x14: // dc4 ctrl-T
|
---|
3088 | crashme = (crashme == 0) ? 1 : 0;
|
---|
3089 | break;
|
---|
3090 | #endif
|
---|
3091 | //case 0x16: // syn
|
---|
3092 | //case 0x17: // etb
|
---|
3093 | //case 0x18: // can
|
---|
3094 | //case 0x1c: // fs
|
---|
3095 | //case 0x1d: // gs
|
---|
3096 | //case 0x1e: // rs
|
---|
3097 | //case 0x1f: // us
|
---|
3098 | //case '!': // !-
|
---|
3099 | //case '#': // #-
|
---|
3100 | //case '&': // &-
|
---|
3101 | //case '(': // (-
|
---|
3102 | //case ')': // )-
|
---|
3103 | //case '*': // *-
|
---|
3104 | //case '=': // =-
|
---|
3105 | //case '@': // @-
|
---|
3106 | //case 'F': // F-
|
---|
3107 | //case 'K': // K-
|
---|
3108 | //case 'Q': // Q-
|
---|
3109 | //case 'S': // S-
|
---|
3110 | //case 'T': // T-
|
---|
3111 | //case 'V': // V-
|
---|
3112 | //case '[': // [-
|
---|
3113 | //case '\\': // \-
|
---|
3114 | //case ']': // ]-
|
---|
3115 | //case '_': // _-
|
---|
3116 | //case '`': // `-
|
---|
3117 | //case 'u': // u- FIXME- there is no undo
|
---|
3118 | //case 'v': // v-
|
---|
3119 | default: // unrecognized command
|
---|
3120 | buf[0] = c;
|
---|
3121 | buf[1] = '\0';
|
---|
3122 | not_implemented(buf);
|
---|
3123 | end_cmd_q(); // stop adding to q
|
---|
3124 | case 0x00: // nul- ignore
|
---|
3125 | break;
|
---|
3126 | case 2: // ctrl-B scroll up full screen
|
---|
3127 | case KEYCODE_PAGEUP: // Cursor Key Page Up
|
---|
3128 | dot_scroll(rows - 2, -1);
|
---|
3129 | break;
|
---|
3130 | case 4: // ctrl-D scroll down half screen
|
---|
3131 | dot_scroll((rows - 2) / 2, 1);
|
---|
3132 | break;
|
---|
3133 | case 5: // ctrl-E scroll down one line
|
---|
3134 | dot_scroll(1, 1);
|
---|
3135 | break;
|
---|
3136 | case 6: // ctrl-F scroll down full screen
|
---|
3137 | case KEYCODE_PAGEDOWN: // Cursor Key Page Down
|
---|
3138 | dot_scroll(rows - 2, 1);
|
---|
3139 | break;
|
---|
3140 | case 7: // ctrl-G show current status
|
---|
3141 | last_status_cksum = 0; // force status update
|
---|
3142 | break;
|
---|
3143 | case 'h': // h- move left
|
---|
3144 | case KEYCODE_LEFT: // cursor key Left
|
---|
3145 | case 8: // ctrl-H- move left (This may be ERASE char)
|
---|
3146 | case 0x7f: // DEL- move left (This may be ERASE char)
|
---|
3147 | do {
|
---|
3148 | dot_left();
|
---|
3149 | } while (--cmdcnt > 0);
|
---|
3150 | break;
|
---|
3151 | case 10: // Newline ^J
|
---|
3152 | case 'j': // j- goto next line, same col
|
---|
3153 | case KEYCODE_DOWN: // cursor key Down
|
---|
3154 | do {
|
---|
3155 | dot_next(); // go to next B-o-l
|
---|
3156 | // try stay in same col
|
---|
3157 | dot = move_to_col(dot, ccol + offset);
|
---|
3158 | } while (--cmdcnt > 0);
|
---|
3159 | break;
|
---|
3160 | case 12: // ctrl-L force redraw whole screen
|
---|
3161 | case 18: // ctrl-R force redraw
|
---|
3162 | place_cursor(0, 0);
|
---|
3163 | clear_to_eos();
|
---|
3164 | //mysleep(10); // why???
|
---|
3165 | screen_erase(); // erase the internal screen buffer
|
---|
3166 | last_status_cksum = 0; // force status update
|
---|
3167 | refresh(TRUE); // this will redraw the entire display
|
---|
3168 | break;
|
---|
3169 | case 13: // Carriage Return ^M
|
---|
3170 | case '+': // +- goto next line
|
---|
3171 | do {
|
---|
3172 | dot_next();
|
---|
3173 | dot_skip_over_ws();
|
---|
3174 | } while (--cmdcnt > 0);
|
---|
3175 | break;
|
---|
3176 | case 21: // ctrl-U scroll up half screen
|
---|
3177 | dot_scroll((rows - 2) / 2, -1);
|
---|
3178 | break;
|
---|
3179 | case 25: // ctrl-Y scroll up one line
|
---|
3180 | dot_scroll(1, -1);
|
---|
3181 | break;
|
---|
3182 | case 27: // esc
|
---|
3183 | if (cmd_mode == 0)
|
---|
3184 | indicate_error(c);
|
---|
3185 | cmd_mode = 0; // stop insrting
|
---|
3186 | end_cmd_q();
|
---|
3187 | last_status_cksum = 0; // force status update
|
---|
3188 | break;
|
---|
3189 | case ' ': // move right
|
---|
3190 | case 'l': // move right
|
---|
3191 | case KEYCODE_RIGHT: // Cursor Key Right
|
---|
3192 | do {
|
---|
3193 | dot_right();
|
---|
3194 | } while (--cmdcnt > 0);
|
---|
3195 | break;
|
---|
3196 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3197 | case '"': // "- name a register to use for Delete/Yank
|
---|
3198 | c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower()
|
---|
3199 | if ((unsigned)c1 <= 25) { // a-z?
|
---|
3200 | YDreg = c1;
|
---|
3201 | } else {
|
---|
3202 | indicate_error(c);
|
---|
3203 | }
|
---|
3204 | break;
|
---|
3205 | case '\'': // '- goto a specific mark
|
---|
3206 | c1 = (get_one_char() | 0x20) - 'a';
|
---|
3207 | if ((unsigned)c1 <= 25) { // a-z?
|
---|
3208 | // get the b-o-l
|
---|
3209 | q = mark[c1];
|
---|
3210 | if (text <= q && q < end) {
|
---|
3211 | dot = q;
|
---|
3212 | dot_begin(); // go to B-o-l
|
---|
3213 | dot_skip_over_ws();
|
---|
3214 | }
|
---|
3215 | } else if (c1 == '\'') { // goto previous context
|
---|
3216 | dot = swap_context(dot); // swap current and previous context
|
---|
3217 | dot_begin(); // go to B-o-l
|
---|
3218 | dot_skip_over_ws();
|
---|
3219 | } else {
|
---|
3220 | indicate_error(c);
|
---|
3221 | }
|
---|
3222 | break;
|
---|
3223 | case 'm': // m- Mark a line
|
---|
3224 | // this is really stupid. If there are any inserts or deletes
|
---|
3225 | // between text[0] and dot then this mark will not point to the
|
---|
3226 | // correct location! It could be off by many lines!
|
---|
3227 | // Well..., at least its quick and dirty.
|
---|
3228 | c1 = (get_one_char() | 0x20) - 'a';
|
---|
3229 | if ((unsigned)c1 <= 25) { // a-z?
|
---|
3230 | // remember the line
|
---|
3231 | mark[c1] = dot;
|
---|
3232 | } else {
|
---|
3233 | indicate_error(c);
|
---|
3234 | }
|
---|
3235 | break;
|
---|
3236 | case 'P': // P- Put register before
|
---|
3237 | case 'p': // p- put register after
|
---|
3238 | p = reg[YDreg];
|
---|
3239 | if (p == NULL) {
|
---|
3240 | status_line_bold("Nothing in register %c", what_reg());
|
---|
3241 | break;
|
---|
3242 | }
|
---|
3243 | // are we putting whole lines or strings
|
---|
3244 | if (strchr(p, '\n') != NULL) {
|
---|
3245 | if (c == 'P') {
|
---|
3246 | dot_begin(); // putting lines- Put above
|
---|
3247 | }
|
---|
3248 | if (c == 'p') {
|
---|
3249 | // are we putting after very last line?
|
---|
3250 | if (end_line(dot) == (end - 1)) {
|
---|
3251 | dot = end; // force dot to end of text[]
|
---|
3252 | } else {
|
---|
3253 | dot_next(); // next line, then put before
|
---|
3254 | }
|
---|
3255 | }
|
---|
3256 | } else {
|
---|
3257 | if (c == 'p')
|
---|
3258 | dot_right(); // move to right, can move to NL
|
---|
3259 | }
|
---|
3260 | string_insert(dot, p); // insert the string
|
---|
3261 | end_cmd_q(); // stop adding to q
|
---|
3262 | break;
|
---|
3263 | case 'U': // U- Undo; replace current line with original version
|
---|
3264 | if (reg[Ureg] != NULL) {
|
---|
3265 | p = begin_line(dot);
|
---|
3266 | q = end_line(dot);
|
---|
3267 | p = text_hole_delete(p, q); // delete cur line
|
---|
3268 | p += string_insert(p, reg[Ureg]); // insert orig line
|
---|
3269 | dot = p;
|
---|
3270 | dot_skip_over_ws();
|
---|
3271 | }
|
---|
3272 | break;
|
---|
3273 | #endif /* FEATURE_VI_YANKMARK */
|
---|
3274 | case '$': // $- goto end of line
|
---|
3275 | case KEYCODE_END: // Cursor Key End
|
---|
3276 | for (;;) {
|
---|
3277 | dot = end_line(dot);
|
---|
3278 | if (--cmdcnt <= 0)
|
---|
3279 | break;
|
---|
3280 | dot_next();
|
---|
3281 | }
|
---|
3282 | break;
|
---|
3283 | case '%': // %- find matching char of pair () [] {}
|
---|
3284 | for (q = dot; q < end && *q != '\n'; q++) {
|
---|
3285 | if (strchr("()[]{}", *q) != NULL) {
|
---|
3286 | // we found half of a pair
|
---|
3287 | p = find_pair(q, *q);
|
---|
3288 | if (p == NULL) {
|
---|
3289 | indicate_error(c);
|
---|
3290 | } else {
|
---|
3291 | dot = p;
|
---|
3292 | }
|
---|
3293 | break;
|
---|
3294 | }
|
---|
3295 | }
|
---|
3296 | if (*q == '\n')
|
---|
3297 | indicate_error(c);
|
---|
3298 | break;
|
---|
3299 | case 'f': // f- forward to a user specified char
|
---|
3300 | last_forward_char = get_one_char(); // get the search char
|
---|
3301 | //
|
---|
3302 | // dont separate these two commands. 'f' depends on ';'
|
---|
3303 | //
|
---|
3304 | //**** fall through to ... ';'
|
---|
3305 | case ';': // ;- look at rest of line for last forward char
|
---|
3306 | do {
|
---|
3307 | if (last_forward_char == 0)
|
---|
3308 | break;
|
---|
3309 | q = dot + 1;
|
---|
3310 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
|
---|
3311 | q++;
|
---|
3312 | }
|
---|
3313 | if (*q == last_forward_char)
|
---|
3314 | dot = q;
|
---|
3315 | } while (--cmdcnt > 0);
|
---|
3316 | break;
|
---|
3317 | case ',': // repeat latest 'f' in opposite direction
|
---|
3318 | if (last_forward_char == 0)
|
---|
3319 | break;
|
---|
3320 | do {
|
---|
3321 | q = dot - 1;
|
---|
3322 | while (q >= text && *q != '\n' && *q != last_forward_char) {
|
---|
3323 | q--;
|
---|
3324 | }
|
---|
3325 | if (q >= text && *q == last_forward_char)
|
---|
3326 | dot = q;
|
---|
3327 | } while (--cmdcnt > 0);
|
---|
3328 | break;
|
---|
3329 |
|
---|
3330 | case '-': // -- goto prev line
|
---|
3331 | do {
|
---|
3332 | dot_prev();
|
---|
3333 | dot_skip_over_ws();
|
---|
3334 | } while (--cmdcnt > 0);
|
---|
3335 | break;
|
---|
3336 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
3337 | case '.': // .- repeat the last modifying command
|
---|
3338 | // Stuff the last_modifying_cmd back into stdin
|
---|
3339 | // and let it be re-executed.
|
---|
3340 | if (lmc_len > 0) {
|
---|
3341 | last_modifying_cmd[lmc_len] = 0;
|
---|
3342 | ioq = ioq_start = xstrdup(last_modifying_cmd);
|
---|
3343 | }
|
---|
3344 | break;
|
---|
3345 | #endif
|
---|
3346 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
3347 | case '?': // /- search for a pattern
|
---|
3348 | case '/': // /- search for a pattern
|
---|
3349 | buf[0] = c;
|
---|
3350 | buf[1] = '\0';
|
---|
3351 | q = get_input_line(buf); // get input line- use "status line"
|
---|
3352 | if (q[0] && !q[1]) {
|
---|
3353 | if (last_search_pattern[0])
|
---|
3354 | last_search_pattern[0] = c;
|
---|
3355 | goto dc3; // if no pat re-use old pat
|
---|
3356 | }
|
---|
3357 | if (q[0]) { // strlen(q) > 1: new pat- save it and find
|
---|
3358 | // there is a new pat
|
---|
3359 | free(last_search_pattern);
|
---|
3360 | last_search_pattern = xstrdup(q);
|
---|
3361 | goto dc3; // now find the pattern
|
---|
3362 | }
|
---|
3363 | // user changed mind and erased the "/"- do nothing
|
---|
3364 | break;
|
---|
3365 | case 'N': // N- backward search for last pattern
|
---|
3366 | dir = BACK; // assume BACKWARD search
|
---|
3367 | p = dot - 1;
|
---|
3368 | if (last_search_pattern[0] == '?') {
|
---|
3369 | dir = FORWARD;
|
---|
3370 | p = dot + 1;
|
---|
3371 | }
|
---|
3372 | goto dc4; // now search for pattern
|
---|
3373 | break;
|
---|
3374 | case 'n': // n- repeat search for last pattern
|
---|
3375 | // search rest of text[] starting at next char
|
---|
3376 | // if search fails return orignal "p" not the "p+1" address
|
---|
3377 | do {
|
---|
3378 | const char *msg;
|
---|
3379 | dc3:
|
---|
3380 | dir = FORWARD; // assume FORWARD search
|
---|
3381 | p = dot + 1;
|
---|
3382 | if (last_search_pattern[0] == '?') {
|
---|
3383 | dir = BACK;
|
---|
3384 | p = dot - 1;
|
---|
3385 | }
|
---|
3386 | dc4:
|
---|
3387 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
3388 | if (q != NULL) {
|
---|
3389 | dot = q; // good search, update "dot"
|
---|
3390 | msg = NULL;
|
---|
3391 | goto dc2;
|
---|
3392 | }
|
---|
3393 | // no pattern found between "dot" and "end"- continue at top
|
---|
3394 | p = text;
|
---|
3395 | if (dir == BACK) {
|
---|
3396 | p = end - 1;
|
---|
3397 | }
|
---|
3398 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
3399 | if (q != NULL) { // found something
|
---|
3400 | dot = q; // found new pattern- goto it
|
---|
3401 | msg = "search hit BOTTOM, continuing at TOP";
|
---|
3402 | if (dir == BACK) {
|
---|
3403 | msg = "search hit TOP, continuing at BOTTOM";
|
---|
3404 | }
|
---|
3405 | } else {
|
---|
3406 | msg = "Pattern not found";
|
---|
3407 | }
|
---|
3408 | dc2:
|
---|
3409 | if (msg)
|
---|
3410 | status_line_bold("%s", msg);
|
---|
3411 | } while (--cmdcnt > 0);
|
---|
3412 | break;
|
---|
3413 | case '{': // {- move backward paragraph
|
---|
3414 | q = char_search(dot, "\n\n", BACK, FULL);
|
---|
3415 | if (q != NULL) { // found blank line
|
---|
3416 | dot = next_line(q); // move to next blank line
|
---|
3417 | }
|
---|
3418 | break;
|
---|
3419 | case '}': // }- move forward paragraph
|
---|
3420 | q = char_search(dot, "\n\n", FORWARD, FULL);
|
---|
3421 | if (q != NULL) { // found blank line
|
---|
3422 | dot = next_line(q); // move to next blank line
|
---|
3423 | }
|
---|
3424 | break;
|
---|
3425 | #endif /* FEATURE_VI_SEARCH */
|
---|
3426 | case '0': // 0- goto begining of line
|
---|
3427 | case '1': // 1-
|
---|
3428 | case '2': // 2-
|
---|
3429 | case '3': // 3-
|
---|
3430 | case '4': // 4-
|
---|
3431 | case '5': // 5-
|
---|
3432 | case '6': // 6-
|
---|
3433 | case '7': // 7-
|
---|
3434 | case '8': // 8-
|
---|
3435 | case '9': // 9-
|
---|
3436 | if (c == '0' && cmdcnt < 1) {
|
---|
3437 | dot_begin(); // this was a standalone zero
|
---|
3438 | } else {
|
---|
3439 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
|
---|
3440 | }
|
---|
3441 | break;
|
---|
3442 | case ':': // :- the colon mode commands
|
---|
3443 | p = get_input_line(":"); // get input line- use "status line"
|
---|
3444 | #if ENABLE_FEATURE_VI_COLON
|
---|
3445 | colon(p); // execute the command
|
---|
3446 | #else
|
---|
3447 | if (*p == ':')
|
---|
3448 | p++; // move past the ':'
|
---|
3449 | cnt = strlen(p);
|
---|
3450 | if (cnt <= 0)
|
---|
3451 | break;
|
---|
3452 | if (strncmp(p, "quit", cnt) == 0
|
---|
3453 | || strncmp(p, "q!", cnt) == 0 // delete lines
|
---|
3454 | ) {
|
---|
3455 | if (file_modified && p[1] != '!') {
|
---|
3456 | status_line_bold("No write since last change (:%s! overrides)", p);
|
---|
3457 | } else {
|
---|
3458 | editing = 0;
|
---|
3459 | }
|
---|
3460 | } else if (strncmp(p, "write", cnt) == 0
|
---|
3461 | || strncmp(p, "wq", cnt) == 0
|
---|
3462 | || strncmp(p, "wn", cnt) == 0
|
---|
3463 | || (p[0] == 'x' && !p[1])
|
---|
3464 | ) {
|
---|
3465 | cnt = file_write(current_filename, text, end - 1);
|
---|
3466 | if (cnt < 0) {
|
---|
3467 | if (cnt == -1)
|
---|
3468 | status_line_bold("Write error: %s", strerror(errno));
|
---|
3469 | } else {
|
---|
3470 | file_modified = 0;
|
---|
3471 | last_file_modified = -1;
|
---|
3472 | status_line("\"%s\" %dL, %dC", current_filename, count_lines(text, end - 1), cnt);
|
---|
3473 | if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
|
---|
3474 | || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
|
---|
3475 | ) {
|
---|
3476 | editing = 0;
|
---|
3477 | }
|
---|
3478 | }
|
---|
3479 | } else if (strncmp(p, "file", cnt) == 0) {
|
---|
3480 | last_status_cksum = 0; // force status update
|
---|
3481 | } else if (sscanf(p, "%d", &j) > 0) {
|
---|
3482 | dot = find_line(j); // go to line # j
|
---|
3483 | dot_skip_over_ws();
|
---|
3484 | } else { // unrecognized cmd
|
---|
3485 | not_implemented(p);
|
---|
3486 | }
|
---|
3487 | #endif /* !FEATURE_VI_COLON */
|
---|
3488 | break;
|
---|
3489 | case '<': // <- Left shift something
|
---|
3490 | case '>': // >- Right shift something
|
---|
3491 | cnt = count_lines(text, dot); // remember what line we are on
|
---|
3492 | c1 = get_one_char(); // get the type of thing to delete
|
---|
3493 | find_range(&p, &q, c1);
|
---|
3494 | yank_delete(p, q, 1, YANKONLY); // save copy before change
|
---|
3495 | p = begin_line(p);
|
---|
3496 | q = end_line(q);
|
---|
3497 | i = count_lines(p, q); // # of lines we are shifting
|
---|
3498 | for ( ; i > 0; i--, p = next_line(p)) {
|
---|
3499 | if (c == '<') {
|
---|
3500 | // shift left- remove tab or 8 spaces
|
---|
3501 | if (*p == '\t') {
|
---|
3502 | // shrink buffer 1 char
|
---|
3503 | text_hole_delete(p, p);
|
---|
3504 | } else if (*p == ' ') {
|
---|
3505 | // we should be calculating columns, not just SPACE
|
---|
3506 | for (j = 0; *p == ' ' && j < tabstop; j++) {
|
---|
3507 | text_hole_delete(p, p);
|
---|
3508 | }
|
---|
3509 | }
|
---|
3510 | } else if (c == '>') {
|
---|
3511 | // shift right -- add tab or 8 spaces
|
---|
3512 | char_insert(p, '\t');
|
---|
3513 | }
|
---|
3514 | }
|
---|
3515 | dot = find_line(cnt); // what line were we on
|
---|
3516 | dot_skip_over_ws();
|
---|
3517 | end_cmd_q(); // stop adding to q
|
---|
3518 | break;
|
---|
3519 | case 'A': // A- append at e-o-l
|
---|
3520 | dot_end(); // go to e-o-l
|
---|
3521 | //**** fall through to ... 'a'
|
---|
3522 | case 'a': // a- append after current char
|
---|
3523 | if (*dot != '\n')
|
---|
3524 | dot++;
|
---|
3525 | goto dc_i;
|
---|
3526 | break;
|
---|
3527 | case 'B': // B- back a blank-delimited Word
|
---|
3528 | case 'E': // E- end of a blank-delimited word
|
---|
3529 | case 'W': // W- forward a blank-delimited word
|
---|
3530 | dir = FORWARD;
|
---|
3531 | if (c == 'B')
|
---|
3532 | dir = BACK;
|
---|
3533 | do {
|
---|
3534 | if (c == 'W' || isspace(dot[dir])) {
|
---|
3535 | dot = skip_thing(dot, 1, dir, S_TO_WS);
|
---|
3536 | dot = skip_thing(dot, 2, dir, S_OVER_WS);
|
---|
3537 | }
|
---|
3538 | if (c != 'W')
|
---|
3539 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
|
---|
3540 | } while (--cmdcnt > 0);
|
---|
3541 | break;
|
---|
3542 | case 'C': // C- Change to e-o-l
|
---|
3543 | case 'D': // D- delete to e-o-l
|
---|
3544 | save_dot = dot;
|
---|
3545 | dot = dollar_line(dot); // move to before NL
|
---|
3546 | // copy text into a register and delete
|
---|
3547 | dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l
|
---|
3548 | if (c == 'C')
|
---|
3549 | goto dc_i; // start inserting
|
---|
3550 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
3551 | if (c == 'D')
|
---|
3552 | end_cmd_q(); // stop adding to q
|
---|
3553 | #endif
|
---|
3554 | break;
|
---|
3555 | case 'g': // 'gg' goto a line number (vim) (default: very first line)
|
---|
3556 | c1 = get_one_char();
|
---|
3557 | if (c1 != 'g') {
|
---|
3558 | buf[0] = 'g';
|
---|
3559 | buf[1] = c1; // TODO: if Unicode?
|
---|
3560 | buf[2] = '\0';
|
---|
3561 | not_implemented(buf);
|
---|
3562 | break;
|
---|
3563 | }
|
---|
3564 | if (cmdcnt == 0)
|
---|
3565 | cmdcnt = 1;
|
---|
3566 | /* fall through */
|
---|
3567 | case 'G': // G- goto to a line number (default= E-O-F)
|
---|
3568 | dot = end - 1; // assume E-O-F
|
---|
3569 | if (cmdcnt > 0) {
|
---|
3570 | dot = find_line(cmdcnt); // what line is #cmdcnt
|
---|
3571 | }
|
---|
3572 | dot_skip_over_ws();
|
---|
3573 | break;
|
---|
3574 | case 'H': // H- goto top line on screen
|
---|
3575 | dot = screenbegin;
|
---|
3576 | if (cmdcnt > (rows - 1)) {
|
---|
3577 | cmdcnt = (rows - 1);
|
---|
3578 | }
|
---|
3579 | if (--cmdcnt > 0) {
|
---|
3580 | do_cmd('+');
|
---|
3581 | }
|
---|
3582 | dot_skip_over_ws();
|
---|
3583 | break;
|
---|
3584 | case 'I': // I- insert before first non-blank
|
---|
3585 | dot_begin(); // 0
|
---|
3586 | dot_skip_over_ws();
|
---|
3587 | //**** fall through to ... 'i'
|
---|
3588 | case 'i': // i- insert before current char
|
---|
3589 | case KEYCODE_INSERT: // Cursor Key Insert
|
---|
3590 | dc_i:
|
---|
3591 | cmd_mode = 1; // start inserting
|
---|
3592 | break;
|
---|
3593 | case 'J': // J- join current and next lines together
|
---|
3594 | do {
|
---|
3595 | dot_end(); // move to NL
|
---|
3596 | if (dot < end - 1) { // make sure not last char in text[]
|
---|
3597 | *dot++ = ' '; // replace NL with space
|
---|
3598 | file_modified++;
|
---|
3599 | while (isblank(*dot)) { // delete leading WS
|
---|
3600 | dot_delete();
|
---|
3601 | }
|
---|
3602 | }
|
---|
3603 | } while (--cmdcnt > 0);
|
---|
3604 | end_cmd_q(); // stop adding to q
|
---|
3605 | break;
|
---|
3606 | case 'L': // L- goto bottom line on screen
|
---|
3607 | dot = end_screen();
|
---|
3608 | if (cmdcnt > (rows - 1)) {
|
---|
3609 | cmdcnt = (rows - 1);
|
---|
3610 | }
|
---|
3611 | if (--cmdcnt > 0) {
|
---|
3612 | do_cmd('-');
|
---|
3613 | }
|
---|
3614 | dot_begin();
|
---|
3615 | dot_skip_over_ws();
|
---|
3616 | break;
|
---|
3617 | case 'M': // M- goto middle line on screen
|
---|
3618 | dot = screenbegin;
|
---|
3619 | for (cnt = 0; cnt < (rows-1) / 2; cnt++)
|
---|
3620 | dot = next_line(dot);
|
---|
3621 | break;
|
---|
3622 | case 'O': // O- open a empty line above
|
---|
3623 | // 0i\n ESC -i
|
---|
3624 | p = begin_line(dot);
|
---|
3625 | if (p[-1] == '\n') {
|
---|
3626 | dot_prev();
|
---|
3627 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
|
---|
3628 | dot_end();
|
---|
3629 | dot = char_insert(dot, '\n');
|
---|
3630 | } else {
|
---|
3631 | dot_begin(); // 0
|
---|
3632 | dot = char_insert(dot, '\n'); // i\n ESC
|
---|
3633 | dot_prev(); // -
|
---|
3634 | }
|
---|
3635 | goto dc_i;
|
---|
3636 | break;
|
---|
3637 | case 'R': // R- continuous Replace char
|
---|
3638 | dc5:
|
---|
3639 | cmd_mode = 2;
|
---|
3640 | break;
|
---|
3641 | case KEYCODE_DELETE:
|
---|
3642 | c = 'x';
|
---|
3643 | // fall through
|
---|
3644 | case 'X': // X- delete char before dot
|
---|
3645 | case 'x': // x- delete the current char
|
---|
3646 | case 's': // s- substitute the current char
|
---|
3647 | dir = 0;
|
---|
3648 | if (c == 'X')
|
---|
3649 | dir = -1;
|
---|
3650 | do {
|
---|
3651 | if (dot[dir] != '\n') {
|
---|
3652 | if (c == 'X')
|
---|
3653 | dot--; // delete prev char
|
---|
3654 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
|
---|
3655 | }
|
---|
3656 | } while (--cmdcnt > 0);
|
---|
3657 | end_cmd_q(); // stop adding to q
|
---|
3658 | if (c == 's')
|
---|
3659 | goto dc_i; // start inserting
|
---|
3660 | break;
|
---|
3661 | case 'Z': // Z- if modified, {write}; exit
|
---|
3662 | // ZZ means to save file (if necessary), then exit
|
---|
3663 | c1 = get_one_char();
|
---|
3664 | if (c1 != 'Z') {
|
---|
3665 | indicate_error(c);
|
---|
3666 | break;
|
---|
3667 | }
|
---|
3668 | if (file_modified) {
|
---|
3669 | if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
|
---|
3670 | status_line_bold("\"%s\" File is read only", current_filename);
|
---|
3671 | break;
|
---|
3672 | }
|
---|
3673 | cnt = file_write(current_filename, text, end - 1);
|
---|
3674 | if (cnt < 0) {
|
---|
3675 | if (cnt == -1)
|
---|
3676 | status_line_bold("Write error: %s", strerror(errno));
|
---|
3677 | } else if (cnt == (end - 1 - text + 1)) {
|
---|
3678 | editing = 0;
|
---|
3679 | }
|
---|
3680 | } else {
|
---|
3681 | editing = 0;
|
---|
3682 | }
|
---|
3683 | break;
|
---|
3684 | case '^': // ^- move to first non-blank on line
|
---|
3685 | dot_begin();
|
---|
3686 | dot_skip_over_ws();
|
---|
3687 | break;
|
---|
3688 | case 'b': // b- back a word
|
---|
3689 | case 'e': // e- end of word
|
---|
3690 | dir = FORWARD;
|
---|
3691 | if (c == 'b')
|
---|
3692 | dir = BACK;
|
---|
3693 | do {
|
---|
3694 | if ((dot + dir) < text || (dot + dir) > end - 1)
|
---|
3695 | break;
|
---|
3696 | dot += dir;
|
---|
3697 | if (isspace(*dot)) {
|
---|
3698 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
|
---|
3699 | }
|
---|
3700 | if (isalnum(*dot) || *dot == '_') {
|
---|
3701 | dot = skip_thing(dot, 1, dir, S_END_ALNUM);
|
---|
3702 | } else if (ispunct(*dot)) {
|
---|
3703 | dot = skip_thing(dot, 1, dir, S_END_PUNCT);
|
---|
3704 | }
|
---|
3705 | } while (--cmdcnt > 0);
|
---|
3706 | break;
|
---|
3707 | case 'c': // c- change something
|
---|
3708 | case 'd': // d- delete something
|
---|
3709 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3710 | case 'y': // y- yank something
|
---|
3711 | case 'Y': // Y- Yank a line
|
---|
3712 | #endif
|
---|
3713 | {
|
---|
3714 | int yf, ml, whole = 0;
|
---|
3715 | yf = YANKDEL; // assume either "c" or "d"
|
---|
3716 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3717 | if (c == 'y' || c == 'Y')
|
---|
3718 | yf = YANKONLY;
|
---|
3719 | #endif
|
---|
3720 | c1 = 'y';
|
---|
3721 | if (c != 'Y')
|
---|
3722 | c1 = get_one_char(); // get the type of thing to delete
|
---|
3723 | // determine range, and whether it spans lines
|
---|
3724 | ml = find_range(&p, &q, c1);
|
---|
3725 | if (c1 == 27) { // ESC- user changed mind and wants out
|
---|
3726 | c = c1 = 27; // Escape- do nothing
|
---|
3727 | } else if (strchr("wW", c1)) {
|
---|
3728 | if (c == 'c') {
|
---|
3729 | // don't include trailing WS as part of word
|
---|
3730 | while (isblank(*q)) {
|
---|
3731 | if (q <= text || q[-1] == '\n')
|
---|
3732 | break;
|
---|
3733 | q--;
|
---|
3734 | }
|
---|
3735 | }
|
---|
3736 | dot = yank_delete(p, q, ml, yf); // delete word
|
---|
3737 | } else if (strchr("^0bBeEft%$ lh\b\177", c1)) {
|
---|
3738 | // partial line copy text into a register and delete
|
---|
3739 | dot = yank_delete(p, q, ml, yf); // delete word
|
---|
3740 | } else if (strchr("cdykjHL+-{}\r\n", c1)) {
|
---|
3741 | // whole line copy text into a register and delete
|
---|
3742 | dot = yank_delete(p, q, ml, yf); // delete lines
|
---|
3743 | whole = 1;
|
---|
3744 | } else {
|
---|
3745 | // could not recognize object
|
---|
3746 | c = c1 = 27; // error-
|
---|
3747 | ml = 0;
|
---|
3748 | indicate_error(c);
|
---|
3749 | }
|
---|
3750 | if (ml && whole) {
|
---|
3751 | if (c == 'c') {
|
---|
3752 | dot = char_insert(dot, '\n');
|
---|
3753 | // on the last line of file don't move to prev line
|
---|
3754 | if (whole && dot != (end-1)) {
|
---|
3755 | dot_prev();
|
---|
3756 | }
|
---|
3757 | } else if (c == 'd') {
|
---|
3758 | dot_begin();
|
---|
3759 | dot_skip_over_ws();
|
---|
3760 | }
|
---|
3761 | }
|
---|
3762 | if (c1 != 27) {
|
---|
3763 | // if CHANGING, not deleting, start inserting after the delete
|
---|
3764 | if (c == 'c') {
|
---|
3765 | strcpy(buf, "Change");
|
---|
3766 | goto dc_i; // start inserting
|
---|
3767 | }
|
---|
3768 | if (c == 'd') {
|
---|
3769 | strcpy(buf, "Delete");
|
---|
3770 | }
|
---|
3771 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3772 | if (c == 'y' || c == 'Y') {
|
---|
3773 | strcpy(buf, "Yank");
|
---|
3774 | }
|
---|
3775 | p = reg[YDreg];
|
---|
3776 | q = p + strlen(p);
|
---|
3777 | for (cnt = 0; p <= q; p++) {
|
---|
3778 | if (*p == '\n')
|
---|
3779 | cnt++;
|
---|
3780 | }
|
---|
3781 | status_line("%s %d lines (%d chars) using [%c]",
|
---|
3782 | buf, cnt, strlen(reg[YDreg]), what_reg());
|
---|
3783 | #endif
|
---|
3784 | end_cmd_q(); // stop adding to q
|
---|
3785 | }
|
---|
3786 | break;
|
---|
3787 | }
|
---|
3788 | case 'k': // k- goto prev line, same col
|
---|
3789 | case KEYCODE_UP: // cursor key Up
|
---|
3790 | do {
|
---|
3791 | dot_prev();
|
---|
3792 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
---|
3793 | } while (--cmdcnt > 0);
|
---|
3794 | break;
|
---|
3795 | case 'r': // r- replace the current char with user input
|
---|
3796 | c1 = get_one_char(); // get the replacement char
|
---|
3797 | if (*dot != '\n') {
|
---|
3798 | *dot = c1;
|
---|
3799 | file_modified++;
|
---|
3800 | }
|
---|
3801 | end_cmd_q(); // stop adding to q
|
---|
3802 | break;
|
---|
3803 | case 't': // t- move to char prior to next x
|
---|
3804 | last_forward_char = get_one_char();
|
---|
3805 | do_cmd(';');
|
---|
3806 | if (*dot == last_forward_char)
|
---|
3807 | dot_left();
|
---|
3808 | last_forward_char = 0;
|
---|
3809 | break;
|
---|
3810 | case 'w': // w- forward a word
|
---|
3811 | do {
|
---|
3812 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
|
---|
3813 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
|
---|
3814 | } else if (ispunct(*dot)) { // we are on PUNCT
|
---|
3815 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
|
---|
3816 | }
|
---|
3817 | if (dot < end - 1)
|
---|
3818 | dot++; // move over word
|
---|
3819 | if (isspace(*dot)) {
|
---|
3820 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
|
---|
3821 | }
|
---|
3822 | } while (--cmdcnt > 0);
|
---|
3823 | break;
|
---|
3824 | case 'z': // z-
|
---|
3825 | c1 = get_one_char(); // get the replacement char
|
---|
3826 | cnt = 0;
|
---|
3827 | if (c1 == '.')
|
---|
3828 | cnt = (rows - 2) / 2; // put dot at center
|
---|
3829 | if (c1 == '-')
|
---|
3830 | cnt = rows - 2; // put dot at bottom
|
---|
3831 | screenbegin = begin_line(dot); // start dot at top
|
---|
3832 | dot_scroll(cnt, -1);
|
---|
3833 | break;
|
---|
3834 | case '|': // |- move to column "cmdcnt"
|
---|
3835 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column
|
---|
3836 | break;
|
---|
3837 | case '~': // ~- flip the case of letters a-z -> A-Z
|
---|
3838 | do {
|
---|
3839 | if (islower(*dot)) {
|
---|
3840 | *dot = toupper(*dot);
|
---|
3841 | file_modified++;
|
---|
3842 | } else if (isupper(*dot)) {
|
---|
3843 | *dot = tolower(*dot);
|
---|
3844 | file_modified++;
|
---|
3845 | }
|
---|
3846 | dot_right();
|
---|
3847 | } while (--cmdcnt > 0);
|
---|
3848 | end_cmd_q(); // stop adding to q
|
---|
3849 | break;
|
---|
3850 | //----- The Cursor and Function Keys -----------------------------
|
---|
3851 | case KEYCODE_HOME: // Cursor Key Home
|
---|
3852 | dot_begin();
|
---|
3853 | break;
|
---|
3854 | // The Fn keys could point to do_macro which could translate them
|
---|
3855 | #if 0
|
---|
3856 | case KEYCODE_FUN1: // Function Key F1
|
---|
3857 | case KEYCODE_FUN2: // Function Key F2
|
---|
3858 | case KEYCODE_FUN3: // Function Key F3
|
---|
3859 | case KEYCODE_FUN4: // Function Key F4
|
---|
3860 | case KEYCODE_FUN5: // Function Key F5
|
---|
3861 | case KEYCODE_FUN6: // Function Key F6
|
---|
3862 | case KEYCODE_FUN7: // Function Key F7
|
---|
3863 | case KEYCODE_FUN8: // Function Key F8
|
---|
3864 | case KEYCODE_FUN9: // Function Key F9
|
---|
3865 | case KEYCODE_FUN10: // Function Key F10
|
---|
3866 | case KEYCODE_FUN11: // Function Key F11
|
---|
3867 | case KEYCODE_FUN12: // Function Key F12
|
---|
3868 | break;
|
---|
3869 | #endif
|
---|
3870 | }
|
---|
3871 |
|
---|
3872 | dc1:
|
---|
3873 | // if text[] just became empty, add back an empty line
|
---|
3874 | if (end == text) {
|
---|
3875 | char_insert(text, '\n'); // start empty buf with dummy line
|
---|
3876 | dot = text;
|
---|
3877 | }
|
---|
3878 | // it is OK for dot to exactly equal to end, otherwise check dot validity
|
---|
3879 | if (dot != end) {
|
---|
3880 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
3881 | }
|
---|
3882 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3883 | check_context(c); // update the current context
|
---|
3884 | #endif
|
---|
3885 |
|
---|
3886 | if (!isdigit(c))
|
---|
3887 | cmdcnt = 0; // cmd was not a number, reset cmdcnt
|
---|
3888 | cnt = dot - begin_line(dot);
|
---|
3889 | // Try to stay off of the Newline
|
---|
3890 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
|
---|
3891 | dot--;
|
---|
3892 | }
|
---|
3893 |
|
---|
3894 | /* NB! the CRASHME code is unmaintained, and doesn't currently build */
|
---|
3895 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
3896 | static int totalcmds = 0;
|
---|
3897 | static int Mp = 85; // Movement command Probability
|
---|
3898 | static int Np = 90; // Non-movement command Probability
|
---|
3899 | static int Dp = 96; // Delete command Probability
|
---|
3900 | static int Ip = 97; // Insert command Probability
|
---|
3901 | static int Yp = 98; // Yank command Probability
|
---|
3902 | static int Pp = 99; // Put command Probability
|
---|
3903 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
|
---|
3904 | static const char chars[20] = "\t012345 abcdABCD-=.$";
|
---|
3905 | static const char *const words[20] = {
|
---|
3906 | "this", "is", "a", "test",
|
---|
3907 | "broadcast", "the", "emergency", "of",
|
---|
3908 | "system", "quick", "brown", "fox",
|
---|
3909 | "jumped", "over", "lazy", "dogs",
|
---|
3910 | "back", "January", "Febuary", "March"
|
---|
3911 | };
|
---|
3912 | static const char *const lines[20] = {
|
---|
3913 | "You should have received a copy of the GNU General Public License\n",
|
---|
3914 | "char c, cm, *cmd, *cmd1;\n",
|
---|
3915 | "generate a command by percentages\n",
|
---|
3916 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
3917 | "Quit, discarding changes!\n",
|
---|
3918 | "Forced write, if permission originally not valid.\n",
|
---|
3919 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
3920 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
3921 | "Please get w/ me and I will go over it with you.\n",
|
---|
3922 | "The following is a list of scheduled, committed changes.\n",
|
---|
3923 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
3924 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
3925 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
3926 | "I will try to get back to you by Friday, December 31.\n",
|
---|
3927 | "This Change will be implemented on Friday.\n",
|
---|
3928 | "Let me know if you have problems accessing this;\n",
|
---|
3929 | "Sterling Huxley recently added you to the access list.\n",
|
---|
3930 | "Would you like to go to lunch?\n",
|
---|
3931 | "The last command will be automatically run.\n",
|
---|
3932 | "This is too much english for a computer geek.\n",
|
---|
3933 | };
|
---|
3934 | static char *multilines[20] = {
|
---|
3935 | "You should have received a copy of the GNU General Public License\n",
|
---|
3936 | "char c, cm, *cmd, *cmd1;\n",
|
---|
3937 | "generate a command by percentages\n",
|
---|
3938 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
3939 | "Quit, discarding changes!\n",
|
---|
3940 | "Forced write, if permission originally not valid.\n",
|
---|
3941 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
3942 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
3943 | "Please get w/ me and I will go over it with you.\n",
|
---|
3944 | "The following is a list of scheduled, committed changes.\n",
|
---|
3945 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
3946 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
3947 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
3948 | "I will try to get back to you by Friday, December 31.\n",
|
---|
3949 | "This Change will be implemented on Friday.\n",
|
---|
3950 | "Let me know if you have problems accessing this;\n",
|
---|
3951 | "Sterling Huxley recently added you to the access list.\n",
|
---|
3952 | "Would you like to go to lunch?\n",
|
---|
3953 | "The last command will be automatically run.\n",
|
---|
3954 | "This is too much english for a computer geek.\n",
|
---|
3955 | };
|
---|
3956 |
|
---|
3957 | // create a random command to execute
|
---|
3958 | static void crash_dummy()
|
---|
3959 | {
|
---|
3960 | static int sleeptime; // how long to pause between commands
|
---|
3961 | char c, cm, *cmd, *cmd1;
|
---|
3962 | int i, cnt, thing, rbi, startrbi, percent;
|
---|
3963 |
|
---|
3964 | // "dot" movement commands
|
---|
3965 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
|
---|
3966 |
|
---|
3967 | // is there already a command running?
|
---|
3968 | if (readbuffer[0] > 0)
|
---|
3969 | goto cd1;
|
---|
3970 | cd0:
|
---|
3971 | readbuffer[0] = 'X';
|
---|
3972 | startrbi = rbi = 1;
|
---|
3973 | sleeptime = 0; // how long to pause between commands
|
---|
3974 | memset(readbuffer, '\0', sizeof(readbuffer));
|
---|
3975 | // generate a command by percentages
|
---|
3976 | percent = (int) lrand48() % 100; // get a number from 0-99
|
---|
3977 | if (percent < Mp) { // Movement commands
|
---|
3978 | // available commands
|
---|
3979 | cmd = cmd1;
|
---|
3980 | M++;
|
---|
3981 | } else if (percent < Np) { // non-movement commands
|
---|
3982 | cmd = "mz<>\'\""; // available commands
|
---|
3983 | N++;
|
---|
3984 | } else if (percent < Dp) { // Delete commands
|
---|
3985 | cmd = "dx"; // available commands
|
---|
3986 | D++;
|
---|
3987 | } else if (percent < Ip) { // Inset commands
|
---|
3988 | cmd = "iIaAsrJ"; // available commands
|
---|
3989 | I++;
|
---|
3990 | } else if (percent < Yp) { // Yank commands
|
---|
3991 | cmd = "yY"; // available commands
|
---|
3992 | Y++;
|
---|
3993 | } else if (percent < Pp) { // Put commands
|
---|
3994 | cmd = "pP"; // available commands
|
---|
3995 | P++;
|
---|
3996 | } else {
|
---|
3997 | // We do not know how to handle this command, try again
|
---|
3998 | U++;
|
---|
3999 | goto cd0;
|
---|
4000 | }
|
---|
4001 | // randomly pick one of the available cmds from "cmd[]"
|
---|
4002 | i = (int) lrand48() % strlen(cmd);
|
---|
4003 | cm = cmd[i];
|
---|
4004 | if (strchr(":\024", cm))
|
---|
4005 | goto cd0; // dont allow colon or ctrl-T commands
|
---|
4006 | readbuffer[rbi++] = cm; // put cmd into input buffer
|
---|
4007 |
|
---|
4008 | // now we have the command-
|
---|
4009 | // there are 1, 2, and multi char commands
|
---|
4010 | // find out which and generate the rest of command as necessary
|
---|
4011 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
|
---|
4012 | cmd1 = " \n\r0$^-+wWeEbBhjklHL";
|
---|
4013 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
|
---|
4014 | cmd1 = "abcdefghijklmnopqrstuvwxyz";
|
---|
4015 | }
|
---|
4016 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
4017 | c = cmd1[thing];
|
---|
4018 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
4019 | }
|
---|
4020 | if (strchr("iIaAsc", cm)) { // multi-char commands
|
---|
4021 | if (cm == 'c') {
|
---|
4022 | // change some thing
|
---|
4023 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
4024 | c = cmd1[thing];
|
---|
4025 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
4026 | }
|
---|
4027 | thing = (int) lrand48() % 4; // what thing to insert
|
---|
4028 | cnt = (int) lrand48() % 10; // how many to insert
|
---|
4029 | for (i = 0; i < cnt; i++) {
|
---|
4030 | if (thing == 0) { // insert chars
|
---|
4031 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
|
---|
4032 | } else if (thing == 1) { // insert words
|
---|
4033 | strcat(readbuffer, words[(int) lrand48() % 20]);
|
---|
4034 | strcat(readbuffer, " ");
|
---|
4035 | sleeptime = 0; // how fast to type
|
---|
4036 | } else if (thing == 2) { // insert lines
|
---|
4037 | strcat(readbuffer, lines[(int) lrand48() % 20]);
|
---|
4038 | sleeptime = 0; // how fast to type
|
---|
4039 | } else { // insert multi-lines
|
---|
4040 | strcat(readbuffer, multilines[(int) lrand48() % 20]);
|
---|
4041 | sleeptime = 0; // how fast to type
|
---|
4042 | }
|
---|
4043 | }
|
---|
4044 | strcat(readbuffer, "\033");
|
---|
4045 | }
|
---|
4046 | readbuffer[0] = strlen(readbuffer + 1);
|
---|
4047 | cd1:
|
---|
4048 | totalcmds++;
|
---|
4049 | if (sleeptime > 0)
|
---|
4050 | mysleep(sleeptime); // sleep 1/100 sec
|
---|
4051 | }
|
---|
4052 |
|
---|
4053 | // test to see if there are any errors
|
---|
4054 | static void crash_test()
|
---|
4055 | {
|
---|
4056 | static time_t oldtim;
|
---|
4057 |
|
---|
4058 | time_t tim;
|
---|
4059 | char d[2], msg[80];
|
---|
4060 |
|
---|
4061 | msg[0] = '\0';
|
---|
4062 | if (end < text) {
|
---|
4063 | strcat(msg, "end<text ");
|
---|
4064 | }
|
---|
4065 | if (end > textend) {
|
---|
4066 | strcat(msg, "end>textend ");
|
---|
4067 | }
|
---|
4068 | if (dot < text) {
|
---|
4069 | strcat(msg, "dot<text ");
|
---|
4070 | }
|
---|
4071 | if (dot > end) {
|
---|
4072 | strcat(msg, "dot>end ");
|
---|
4073 | }
|
---|
4074 | if (screenbegin < text) {
|
---|
4075 | strcat(msg, "screenbegin<text ");
|
---|
4076 | }
|
---|
4077 | if (screenbegin > end - 1) {
|
---|
4078 | strcat(msg, "screenbegin>end-1 ");
|
---|
4079 | }
|
---|
4080 |
|
---|
4081 | if (msg[0]) {
|
---|
4082 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
|
---|
4083 | totalcmds, last_input_char, msg, ESC_BOLD_TEXT, ESC_NORM_TEXT);
|
---|
4084 | fflush_all();
|
---|
4085 | while (safe_read(STDIN_FILENO, d, 1) > 0) {
|
---|
4086 | if (d[0] == '\n' || d[0] == '\r')
|
---|
4087 | break;
|
---|
4088 | }
|
---|
4089 | }
|
---|
4090 | tim = time(NULL);
|
---|
4091 | if (tim >= (oldtim + 3)) {
|
---|
4092 | sprintf(status_buffer,
|
---|
4093 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
|
---|
4094 | totalcmds, M, N, I, D, Y, P, U, end - text + 1);
|
---|
4095 | oldtim = tim;
|
---|
4096 | }
|
---|
4097 | }
|
---|
4098 | #endif
|
---|