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/*
* toc -- spit out a table of contents based on header blocks
*
* Copyright (C) 2008 Jjgod Jiang, David L Parsons.
* The redistribution terms are provided in the COPYRIGHT file that must
* be distributed with this source code.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "cstring.h"
#include "markdown.h"
#include "amalloc.h"
/* write an header index
*/
int mkd_toc(Document *p, char **doc)
{
Paragraph *tp, *srcp;
int last_hnumber = 0;
Cstring res;
CREATE(res);
RESERVE(res, 100);
*doc = 0;
if (!(p && p->ctx))
return -1;
if (!(p->ctx->flags & TOC))
return 0;
for (tp = p->code; tp; tp = tp->next) {
if (tp->typ == SOURCE) {
for (srcp = tp->down; srcp; srcp = srcp->next) {
if (srcp->typ == HDR && srcp->text) {
if (last_hnumber == srcp->hnumber)
Csprintf(&res, "%*s</li>\n",
srcp->hnumber, "");
else
while (last_hnumber >
srcp->hnumber) {
Csprintf(
&res, "%*s</"
"li>\n%*s</"
"ul>\n",
last_hnumber, "",
last_hnumber - 1,
"");
--last_hnumber;
}
while (srcp->hnumber > last_hnumber) {
Csprintf(&res, "\n%*s<ul>\n",
srcp->hnumber, "");
++last_hnumber;
}
Csprintf(&res, "%*s<li><a href=\"#",
srcp->hnumber, "");
mkd_string_to_anchor(
T(srcp->text->text),
S(srcp->text->text), Csputc, &res);
Csprintf(&res, "\">");
Csreparse(&res, T(srcp->text->text),
S(srcp->text->text), 0);
Csprintf(&res, "</a>");
}
}
}
}
while (last_hnumber > 0) {
Csprintf(&res, "%*s</li>\n%*s</ul>\n", last_hnumber, "",
last_hnumber, "");
--last_hnumber;
}
/* HACK ALERT! HACK ALERT! HACK ALERT! */
*doc = T(res); /* we know that a T(Cstring) is a character pointer */
/* so we can simply pick it up and carry it away, */
return S(res); /* leaving the husk of the Ctring on the stack */
/* END HACK ALERT */
}
/* write an header index
*/
int mkd_generatetoc(Document *p, FILE *out)
{
char *buf = 0;
int sz = mkd_toc(p, &buf);
int ret = EOF;
if (sz > 0)
ret = fwrite(buf, sz, 1, out);
if (buf)
free(buf);
return ret;
}
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