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/* markdown: a C implementation of John Gruber's Markdown markup language.
*
* Copyright (C) 2007 David L Parsons.
* The redistribution terms are provided in the COPYRIGHT file that must
* be distributed with this source code.
*/
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <time.h>
#include <ctype.h>
#include "config.h"
#include "cstring.h"
#include "markdown.h"
#include "amalloc.h"
/* return the xml version of a character
*/
static char *mkd_xmlchar(unsigned char c)
{
switch (c) {
case '<':
return "<";
case '>':
return ">";
case '&':
return "&";
case '"':
return """;
case '\'':
return "'";
default:
if (isascii(c) || (c & 0x80))
return 0;
return "";
}
}
/* write output in XML format
*/
int mkd_generatexml(char *p, int size, FILE *out)
{
unsigned char c;
char *entity;
while (size-- > 0) {
c = *p++;
if (entity = mkd_xmlchar(c))
fputs(entity, out);
else
fputc(c, out);
}
return 0;
}
/* build a xml'ed version of a string
*/
int mkd_xml(char *p, int size, char **res)
{
unsigned char c;
char *entity;
Cstring f;
CREATE(f);
RESERVE(f, 100);
while (size-- > 0) {
c = *p++;
if (entity = mkd_xmlchar(c))
Cswrite(&f, entity, strlen(entity));
else
Csputc(c, &f);
}
/* HACK ALERT! HACK ALERT! HACK ALERT! */
*res = T(f); /* we know that a T(Cstring) is a character pointer */
/* so we can simply pick it up and carry it away, */
return S(f); /* leaving the husk of the Ctring on the stack */
/* END HACK ALERT */
}
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