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