vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/* Expand escape sequences in a string.
|
|
Copyright (C) 1995-1997, 2000-2007, 2012, 2018-2020 Free Software
|
|
Foundation, Inc.
|
|
Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, May 1995.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Expand some escape sequences found in the argument string.
|
|
If backslash_c_seen is != NULL, '\c' sequences are recognized and
|
|
have the effect of setting *backslash_c_seen to true.
|
|
Returns either the argument string or a freshly allocated string. */
|
|
static const char *
|
|
expand_escapes (const char *str, bool *backslash_c_seen)
|
|
{
|
|
const char *cp = str;
|
|
|
|
/* Find the location of the first escape sequence.
|
|
If the string contains no escape sequences, return it right away. */
|
|
for (;;)
|
|
{
|
|
while (cp[0] != '\0' && cp[0] != '\\')
|
|
++cp;
|
|
if (cp[0] == '\0')
|
|
/* The argument string contains no escape sequence. */
|
|
return str;
|
|
/* Found a backslash. */
|
|
if (cp[1] == '\0')
|
|
return str;
|
|
if (strchr ("abcfnrtv\\01234567", cp[1]) != NULL)
|
|
break;
|
|
++cp;
|
|
}
|
|
|
|
{
|
|
char *retval = XNMALLOC (strlen (str), char);
|
|
|
|
memcpy (retval, str, cp - str);
|
|
{
|
|
char *rp = retval + (cp - str);
|
|
|
|
do
|
|
{
|
|
/* Here cp[0] == '\\'. */
|
|
switch (*++cp)
|
|
{
|
|
case 'a': /* alert */
|
|
*rp++ = '\a';
|
|
++cp;
|
|
break;
|
|
case 'b': /* backspace */
|
|
*rp++ = '\b';
|
|
++cp;
|
|
break;
|
|
case 'f': /* form feed */
|
|
*rp++ = '\f';
|
|
++cp;
|
|
break;
|
|
case 'n': /* new line */
|
|
*rp++ = '\n';
|
|
++cp;
|
|
break;
|
|
case 'r': /* carriage return */
|
|
*rp++ = '\r';
|
|
++cp;
|
|
break;
|
|
case 't': /* horizontal tab */
|
|
*rp++ = '\t';
|
|
++cp;
|
|
break;
|
|
case 'v': /* vertical tab */
|
|
*rp++ = '\v';
|
|
++cp;
|
|
break;
|
|
case '\\':
|
|
*rp++ = '\\';
|
|
++cp;
|
|
break;
|
|
case '0': case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7':
|
|
{
|
|
int ch = *cp++ - '0';
|
|
|
|
if (*cp >= '0' && *cp <= '7')
|
|
{
|
|
ch *= 8;
|
|
ch += *cp++ - '0';
|
|
|
|
if (*cp >= '0' && *cp <= '7')
|
|
{
|
|
ch *= 8;
|
|
ch += *cp++ - '0';
|
|
}
|
|
}
|
|
*rp++ = ch;
|
|
}
|
|
break;
|
|
case 'c':
|
|
if (backslash_c_seen != NULL)
|
|
{
|
|
*backslash_c_seen = true;
|
|
++cp;
|
|
break;
|
|
}
|
|
FALLTHROUGH;
|
|
default:
|
|
*rp++ = '\\';
|
|
break;
|
|
}
|
|
|
|
/* Find the next escape sequence. */
|
|
while (cp[0] != '\0' && cp[0] != '\\')
|
|
*rp++ = *cp++;
|
|
}
|
|
while (cp[0] != '\0');
|
|
|
|
/* Terminate the resulting string. */
|
|
*rp = '\0';
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
}
|