Last change
on this file since 3772 was 3621, checked in by Bruno Cornec, 8 years ago |
New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
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-
Property svn:eol-style
set to
native
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File size:
1000 bytes
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Rev | Line | |
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[2725] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Utility routines.
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| 4 | *
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| 5 | * Copyright (C) 2007 Denys Vlasenko
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| 6 | *
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| 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 8 | */
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| 9 |
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| 10 | #include "libbb.h"
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| 11 |
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| 12 | void FAST_FUNC fputc_printable(int ch, FILE *file)
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| 13 | {
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| 14 | if ((ch & (0x80 + PRINTABLE_META)) == (0x80 + PRINTABLE_META)) {
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| 15 | fputs("M-", file);
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| 16 | ch &= 0x7f;
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| 17 | }
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| 18 | ch = (unsigned char) ch;
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| 19 | if (ch == 0x9b) {
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| 20 | /* VT100's CSI, aka Meta-ESC, is not printable on vt-100 */
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| 21 | ch = '{';
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| 22 | goto print_caret;
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| 23 | }
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| 24 | if (ch < ' ') {
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| 25 | ch += '@';
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| 26 | goto print_caret;
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| 27 | }
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| 28 | if (ch == 0x7f) {
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| 29 | ch = '?';
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| 30 | print_caret:
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| 31 | fputc('^', file);
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| 32 | }
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| 33 | fputc(ch, file);
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| 34 | }
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[3621] | 35 |
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| 36 | void FAST_FUNC visible(unsigned ch, char *buf, int flags)
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| 37 | {
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| 38 | if (ch == '\t' && !(flags & VISIBLE_SHOW_TABS)) {
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| 39 | goto raw;
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| 40 | }
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| 41 | if (ch == '\n') {
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| 42 | if (flags & VISIBLE_ENDLINE)
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| 43 | *buf++ = '$';
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| 44 | } else {
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| 45 | if (ch >= 128) {
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| 46 | ch -= 128;
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| 47 | *buf++ = 'M';
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| 48 | *buf++ = '-';
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| 49 | }
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| 50 | if (ch < 32 || ch == 127) {
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| 51 | *buf++ = '^';
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| 52 | ch ^= 0x40;
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| 53 | }
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| 54 | }
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| 55 | raw:
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| 56 | *buf++ = ch;
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| 57 | *buf = '\0';
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| 58 | }
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