netsurf/desktop/save_text.c

116 lines
2.5 KiB
C

/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
*/
#include <stdbool.h>
#include <string.h>
#include "libxml/HTMLtree.h"
#include "netsurf/utils/config.h"
#include "netsurf/content/content.h"
#include "netsurf/desktop/save_text.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
#ifdef WITH_TEXT_EXPORT
static void extract_text(xmlDoc *doc);
static void extract_text_from_tree(xmlNode *n);
static FILE *out;
void save_as_text(struct content *c, char *path) {
htmlParserCtxtPtr toSave;
if (c->type != CONTENT_HTML) {
return;
}
out = fopen(path, "w");
if (!out) return;
toSave = htmlCreateMemoryParserCtxt(c->source_data, c->source_size);
htmlParseDocument(toSave);
extract_text(toSave->myDoc);
fclose(out);
xmlFreeDoc(toSave->myDoc);
htmlFreeParserCtxt(toSave);
}
void extract_text(xmlDoc *doc)
{
xmlNode *html;
/* find the html element */
for (html = doc->children;
html!=0 && html->type != XML_ELEMENT_NODE;
html = html->next)
;
if (html == 0 || strcmp((const char*)html->name, "html") != 0) {
return;
}
extract_text_from_tree(html);
}
void extract_text_from_tree(xmlNode *n)
{
xmlNode *this_node;
const char *text;
int need_nl = 0;
if (n->type == XML_ELEMENT_NODE) {
if (strcmp(n->name, "dl") == 0 ||
strcmp(n->name, "h1") == 0 ||
strcmp(n->name, "h2") == 0 ||
strcmp(n->name, "h3") == 0 ||
strcmp(n->name, "ol") == 0 ||
strcmp(n->name, "title") == 0 ||
strcmp(n->name, "ul") == 0) {
need_nl = 2;
}
else if (strcmp(n->name, "applet") == 0 ||
strcmp(n->name, "br") == 0 ||
strcmp(n->name, "div") == 0 ||
strcmp(n->name, "dt") == 0 ||
strcmp(n->name, "h4") == 0 ||
strcmp(n->name, "h5") == 0 ||
strcmp(n->name, "h6") == 0 ||
strcmp(n->name, "li") == 0 ||
strcmp(n->name, "object") == 0 ||
strcmp(n->name, "p") == 0 ||
strcmp(n->name, "tr") == 0) {
need_nl = 1;
}
/* do nothing, we just recurse through these nodes */
}
else if (n->type == XML_TEXT_NODE) {
if ((text = squash_tolat1(n->content)) != NULL) {
fputs(text, out);
free(text);
}
return;
}
else {
return;
}
/* now recurse */
for (this_node = n->children; this_node != 0; this_node = this_node->next) {
extract_text_from_tree(this_node);
}
while (need_nl--)
fputc('\n', out);
}
#endif