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/*
* Copyright (c) Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#if HAVE_SYS_QUEUE
# include <sys/queue.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "lowdown.h"
#include "extern.h"
/*
* Escape LaTeX special characters.
* Return zero on failure (memory), non-zero on success.
*/
int
lowdown_latex_esc(struct lowdown_buf *ob, const char *data, size_t sz)
{
size_t i;
for (i = 0; i < sz; i++)
switch (data[i]) {
case '&':
case '%':
case '$':
case '#':
case '_':
case '{':
case '}':
if (!hbuf_putc(ob, '\\'))
return 0;
if (!hbuf_putc(ob, data[i]))
return 0;
break;
case '~':
if (!HBUF_PUTSL(ob, "\\textasciitilde{}"))
return 0;
break;
case '^':
if (!HBUF_PUTSL(ob, "\\textasciicircum{}"))
return 0;
break;
case '\\':
if (!HBUF_PUTSL(ob, "\\textbackslash{}"))
return 0;
break;
default:
if (!hbuf_putc(ob, data[i]))
return 0;
break;
}
return 1;
}
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