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.
143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/* Handle quoted segments of a string.
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Copyright (C) 2014-2016 Free Software Foundation, Inc.
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Written by Daiki Ueno <ueno@gnu.org>, 2015.
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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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#ifndef _QUOTE_H
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#define _QUOTE_H
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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static void
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scan_quoted (const char *input, size_t length,
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void (* callback) (char quote, const char *quoted,
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size_t quoted_length,
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void *data),
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void *data)
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{
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const char *p, *start, *end;
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bool seen_opening;
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/* START shall point to the beginning of a quoted segment, END
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points to the end of the entire input string. */
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start = input;
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end = &input[length - 1];
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/* True if we have seen a character which could be an opening
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quotation mark. Note that we can't determine if it is really an
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opening quotation mark until we see a closing quotation mark. */
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seen_opening = false;
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for (p = start; p <= end; p++)
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{
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switch (*p)
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{
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case '"':
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if (seen_opening)
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{
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if (*start == '"')
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{
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if (p == start + 1)
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/* Consider "" as "". */
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callback ('\0', "\"\"", 2, data);
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else
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/* "..." */
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callback ('"', start + 1, p - (start + 1), data);
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start = p + 1;
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seen_opening = false;
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}
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}
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else
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{
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callback ('\0', start, p - start, data);
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start = p;
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seen_opening = true;
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}
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break;
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case '`':
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if (seen_opening)
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{
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if (*start == '`')
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{
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callback ('\0', start, p - start, data);
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start = p;
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}
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}
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else
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{
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callback ('\0', start, p - start, data);
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start = p;
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seen_opening = true;
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}
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break;
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case '\'':
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if (seen_opening)
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{
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if (/* `...' */
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*start == '`'
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/* '...', where
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- The left quote is preceded by a space, and the
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right quote is followed by a space.
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- The left quote is preceded by a space, and the
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right quote is at the end of line.
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- The left quote is at the beginning of the line, and
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the right quote is followed by a space. */
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|| (*start == '\''
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&& (((start > input && *(start - 1) == ' ')
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&& (p == end || *(p + 1) == '\n' || *(p + 1) == ' '))
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|| ((start == input || *(start - 1) == '\n')
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&& p < end && *(p + 1) == ' '))))
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{
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callback ('\'', start + 1, p - (start + 1), data);
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start = p + 1;
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}
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else
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{
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callback ('\0', start, p - start, data);
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start = p;
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}
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seen_opening = false;
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}
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else if (p == input || *(p - 1) == '\n' || *(p - 1) == ' ')
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{
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callback ('\0', start, p - start, data);
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start = p;
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seen_opening = true;
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}
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break;
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}
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}
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/* Copy the rest. */
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if (p > start)
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callback ('\0', start, p - start, data);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _QUOTE_H */
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