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.
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/* Removes leading and/or trailing whitespaces
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Copyright (C) 2006-2024 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Davide Angelocola <davide.angelocola@gmail.com> */
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#include <config.h>
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/* Specification. */
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#include "trim.h"
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#include <ctype.h>
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#include <string.h>
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#include <stddef.h>
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#include <stdlib.h>
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#if GNULIB_MCEL_PREFER
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# include "mcel.h"
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#else
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# include "mbchar.h"
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# include "mbuiterf.h"
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#endif
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#include "xalloc.h"
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char *
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trim2 (const char *s, int how)
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{
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const char *start = s;
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const char *end;
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if (MB_CUR_MAX > 1)
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{
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#if GNULIB_MCEL_PREFER
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/* Skip leading whitespace. */
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if (how != TRIM_TRAILING)
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for (mcel_t g; *start; start += g.len)
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{
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g = mcel_scanz (start);
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if (!c32isspace (g.ch))
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break;
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}
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/* Find start of any trailing whitespace. */
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if (how != TRIM_LEADING)
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for (const char *p = end = start; *p; )
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{
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mcel_t g = mcel_scanz (p);
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p += g.len;
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if (!c32isspace (g.ch))
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end = p;
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}
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#else
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mbuif_state_t state;
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mbuif_init (state);
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/* Skip leading whitespace. */
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if (how != TRIM_TRAILING)
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while (mbuif_avail (state, start))
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{
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mbchar_t cur = mbuif_next (state, start);
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if (!mb_isspace (cur))
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break;
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start += mb_len (cur);
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}
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/* Find start of any trailing whitespace. */
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if (how != TRIM_LEADING)
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for (const char *p = end = start; mbuif_avail (state, p); )
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{
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mbchar_t cur = mbuif_next (state, p);
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p += mb_len (cur);
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if (!mb_isspace (cur))
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end = p;
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}
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#endif
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}
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else
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{
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/* Skip leading whitespace. */
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if (how != TRIM_TRAILING)
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while (isspace ((unsigned char) *start))
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start++;
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/* Find start of any trailing whitespace. */
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if (how != TRIM_LEADING)
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for (const char *p = end = start; *p; )
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if (!isspace ((unsigned char) *p++))
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end = p;
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}
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/* Create trimmed copy. */
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size_t dlen = how == TRIM_LEADING ? strlen (start) : end - start;
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char *d = malloc (dlen + 1);
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if (!d)
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xalloc_die ();
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char *d_end = mempcpy (d, start, dlen);
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*d_end = '\0';
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return d;
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}
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