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