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103 lines
2.3 KiB
103 lines
2.3 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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int size;
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if ( !(doc && p && p->ctx) ) return -1;
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*doc = 0;
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if ( ! (p->ctx->flags & MKD_TOC) ) return 0;
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CREATE(res);
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RESERVE(res, 100);
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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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while ( last_hnumber > srcp->hnumber ) {
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Csprintf(&res, "%*s</ul></li>\n", last_hnumber-1,"");
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--last_hnumber;
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}
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}
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while ( srcp->hnumber > last_hnumber ) {
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Csprintf(&res, "%*s%s<ul>\n", last_hnumber, "",
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last_hnumber ? "<li>" : "");
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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),
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S(srcp->text->text),
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(mkd_sta_function_t)Csputc, &res,1);
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Csprintf(&res, "\">");
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mkd_string_to_anchor(T(srcp->text->text),
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S(srcp->text->text),
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(mkd_sta_function_t)Csputc, &res,0);
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Csprintf(&res, "</a>");
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Csprintf(&res, "</li>\n");
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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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--last_hnumber;
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Csprintf(&res, last_hnumber ? "%*s</ul></li>\n" : "%*s</ul>\n", last_hnumber, "");
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}
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if ( (size = S(res)) > 0 ) {
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EXPAND(res) = 0;
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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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* leaving the husk of the Ctring on the stack
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* END HACK ALERT
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*/
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}
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else
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DELETE(res);
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return size;
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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, 1, sz, out);
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if ( buf ) free(buf);
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return (ret == sz) ? ret : EOF;
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}
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