[821] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * dos2unix for BusyBox
|
---|
| 4 | *
|
---|
| 5 | * dos2unix '\n' convertor 0.5.0
|
---|
| 6 | * based on Unix2Dos 0.9.0 by Peter Hanecak (made 19.2.1997)
|
---|
| 7 | * Copyright 1997,.. by Peter Hanecak <hanecak@megaloman.sk>.
|
---|
| 8 | * All rights reserved.
|
---|
| 9 | *
|
---|
| 10 | * dos2unix filters reading input from stdin and writing output to stdout.
|
---|
| 11 | *
|
---|
[2725] | 12 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
[821] | 13 | */
|
---|
| 14 |
|
---|
[3232] | 15 | //usage:#define dos2unix_trivial_usage
|
---|
| 16 | //usage: "[-ud] [FILE]"
|
---|
| 17 | //usage:#define dos2unix_full_usage "\n\n"
|
---|
| 18 | //usage: "Convert FILE in-place from DOS to Unix format.\n"
|
---|
| 19 | //usage: "When no file is given, use stdin/stdout.\n"
|
---|
| 20 | //usage: "\n -u dos2unix"
|
---|
| 21 | //usage: "\n -d unix2dos"
|
---|
| 22 | //usage:
|
---|
| 23 | //usage:#define unix2dos_trivial_usage
|
---|
| 24 | //usage: "[-ud] [FILE]"
|
---|
| 25 | //usage:#define unix2dos_full_usage "\n\n"
|
---|
| 26 | //usage: "Convert FILE in-place from Unix to DOS format.\n"
|
---|
| 27 | //usage: "When no file is given, use stdin/stdout.\n"
|
---|
| 28 | //usage: "\n -u dos2unix"
|
---|
| 29 | //usage: "\n -d unix2dos"
|
---|
| 30 |
|
---|
[1765] | 31 | #include "libbb.h"
|
---|
[821] | 32 |
|
---|
[2725] | 33 | /* This is a NOEXEC applet. Be very careful! */
|
---|
| 34 |
|
---|
[1765] | 35 | enum {
|
---|
[821] | 36 | CT_UNIX2DOS = 1,
|
---|
| 37 | CT_DOS2UNIX
|
---|
[1765] | 38 | };
|
---|
[821] | 39 |
|
---|
| 40 | /* if fn is NULL then input is stdin and output is stdout */
|
---|
[2725] | 41 | static void convert(char *fn, int conv_type)
|
---|
[821] | 42 | {
|
---|
| 43 | FILE *in, *out;
|
---|
[3621] | 44 | int ch;
|
---|
[2725] | 45 | char *temp_fn = temp_fn; /* for compiler */
|
---|
| 46 | char *resolved_fn = resolved_fn;
|
---|
[821] | 47 |
|
---|
[1765] | 48 | in = stdin;
|
---|
| 49 | out = stdout;
|
---|
[821] | 50 | if (fn != NULL) {
|
---|
[2725] | 51 | struct stat st;
|
---|
[3621] | 52 | int fd;
|
---|
[2725] | 53 |
|
---|
| 54 | resolved_fn = xmalloc_follow_symlinks(fn);
|
---|
| 55 | if (resolved_fn == NULL)
|
---|
| 56 | bb_simple_perror_msg_and_die(fn);
|
---|
| 57 | in = xfopen_for_read(resolved_fn);
|
---|
[3621] | 58 | xfstat(fileno(in), &st, resolved_fn);
|
---|
[2725] | 59 |
|
---|
| 60 | temp_fn = xasprintf("%sXXXXXX", resolved_fn);
|
---|
[3621] | 61 | fd = xmkstemp(temp_fn);
|
---|
| 62 | if (fchmod(fd, st.st_mode) == -1)
|
---|
[2725] | 63 | bb_simple_perror_msg_and_die(temp_fn);
|
---|
[3621] | 64 | fchown(fd, st.st_uid, st.st_gid);
|
---|
[2725] | 65 |
|
---|
[3621] | 66 | out = xfdopen_for_write(fd);
|
---|
[821] | 67 | }
|
---|
| 68 |
|
---|
[3621] | 69 | while ((ch = fgetc(in)) != EOF) {
|
---|
| 70 | if (ch == '\r')
|
---|
[821] | 71 | continue;
|
---|
[3621] | 72 | if (ch == '\n')
|
---|
[1765] | 73 | if (conv_type == CT_UNIX2DOS)
|
---|
[821] | 74 | fputc('\r', out);
|
---|
[3621] | 75 | fputc(ch, out);
|
---|
[821] | 76 | }
|
---|
| 77 |
|
---|
| 78 | if (fn != NULL) {
|
---|
| 79 | if (fclose(in) < 0 || fclose(out) < 0) {
|
---|
[2725] | 80 | unlink(temp_fn);
|
---|
| 81 | bb_perror_nomsg_and_die();
|
---|
[821] | 82 | }
|
---|
[2725] | 83 | xrename(temp_fn, resolved_fn);
|
---|
| 84 | free(temp_fn);
|
---|
| 85 | free(resolved_fn);
|
---|
[821] | 86 | }
|
---|
| 87 | }
|
---|
| 88 |
|
---|
[2725] | 89 | int dos2unix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 90 | int dos2unix_main(int argc UNUSED_PARAM, char **argv)
|
---|
[821] | 91 | {
|
---|
[1765] | 92 | int o, conv_type;
|
---|
[821] | 93 |
|
---|
| 94 | /* See if we are supposed to be doing dos2unix or unix2dos */
|
---|
[2725] | 95 | conv_type = CT_UNIX2DOS;
|
---|
[1765] | 96 | if (applet_name[0] == 'd') {
|
---|
[2725] | 97 | conv_type = CT_DOS2UNIX;
|
---|
[821] | 98 | }
|
---|
| 99 |
|
---|
[1765] | 100 | /* -u convert to unix, -d convert to dos */
|
---|
| 101 | opt_complementary = "u--d:d--u"; /* mutually exclusive */
|
---|
| 102 | o = getopt32(argv, "du");
|
---|
| 103 |
|
---|
[821] | 104 | /* Do the conversion requested by an argument else do the default
|
---|
| 105 | * conversion depending on our name. */
|
---|
| 106 | if (o)
|
---|
[1765] | 107 | conv_type = o;
|
---|
[821] | 108 |
|
---|
[2725] | 109 | argv += optind;
|
---|
[1765] | 110 | do {
|
---|
| 111 | /* might be convert(NULL) if there is no filename given */
|
---|
[2725] | 112 | convert(*argv, conv_type);
|
---|
| 113 | } while (*argv && *++argv);
|
---|
[821] | 114 |
|
---|
[2725] | 115 | return 0;
|
---|
[821] | 116 | }
|
---|