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90 lines
2.1 KiB
90 lines
2.1 KiB
/*
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* toc -- spit out a table of contents based on header blocks
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*
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* Copyright (C) 2008 Jjgod Jiang, 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 "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.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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/* write an header index
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*/
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int
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mkd_toc(Document *p, char **doc)
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{
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Paragraph *tp, *srcp;
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int last_hnumber = 0;
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Cstring res;
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CREATE(res);
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RESERVE(res, 100);
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*doc = 0;
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if ( !(p && p->ctx) ) return -1;
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if ( ! (p->ctx->flags & TOC) ) return 0;
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for ( tp = p->code; tp ; tp = tp->next ) {
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if ( tp->typ == SOURCE ) {
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for ( srcp = tp->down; srcp; srcp = srcp->next ) {
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if ( srcp->typ == HDR && srcp->text ) {
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if ( last_hnumber == srcp->hnumber )
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Csprintf(&res, "%*s</li>\n", srcp->hnumber, "");
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else while ( last_hnumber > srcp->hnumber ) {
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Csprintf(&res, "%*s</li>\n%*s</ul>\n",
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last_hnumber, "",
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last_hnumber-1,"");
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--last_hnumber;
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}
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while ( srcp->hnumber > last_hnumber ) {
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Csprintf(&res, "\n%*s<ul>\n", srcp->hnumber, "");
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++last_hnumber;
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}
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Csprintf(&res, "%*s<li><a href=\"#", srcp->hnumber, "");
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mkd_string_to_anchor(T(srcp->text->text), S(srcp->text->text), Csputc, &res);
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Csprintf(&res, "\">");
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Csreparse(&res, T(srcp->text->text), S(srcp->text->text), 0);
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Csprintf(&res, "</a>");
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}
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}
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}
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}
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while ( last_hnumber > 0 ) {
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Csprintf(&res, "%*s</li>\n%*s</ul>\n",
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last_hnumber, "", last_hnumber, "");
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--last_hnumber;
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}
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/* HACK ALERT! HACK ALERT! HACK ALERT! */
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*doc = T(res); /* 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(res); /* leaving the husk of the Ctring on the stack */
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/* END HACK ALERT */
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}
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/* write an header index
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*/
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int
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mkd_generatetoc(Document *p, FILE *out)
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{
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char *buf = 0;
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int sz = mkd_toc(p, &buf);
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int ret = EOF;
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if ( sz > 0 )
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ret = fwrite(buf, sz, 1, out);
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if ( buf ) free(buf);
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return ret;
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}
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