mirror of https://github.com/lexborisov/Modest
127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/*
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Copyright (C) 2015-2016 Alexander Borisov
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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Author: lex.borisov@gmail.com (Alexander Borisov)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <myhtml/api.h>
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#include "example.h"
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struct res_html {
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char *html;
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size_t size;
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};
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struct res_html load_html_file(const char* filename)
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{
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FILE *fh = fopen(filename, "rb");
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if(fh == NULL) {
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fprintf(stderr, "Can't open html file: %s\n", filename);
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exit(EXIT_FAILURE);
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}
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if(fseek(fh, 0L, SEEK_END) != 0) {
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fprintf(stderr, "Can't set position (fseek) in file: %s\n", filename);
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exit(EXIT_FAILURE);
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}
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long size = ftell(fh);
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if(fseek(fh, 0L, SEEK_SET) != 0) {
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fprintf(stderr, "Can't set position (fseek) in file: %s\n", filename);
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exit(EXIT_FAILURE);
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}
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if(size <= 0) {
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fprintf(stderr, "Can't get file size or file is empty: %s\n", filename);
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exit(EXIT_FAILURE);
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}
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char *html = (char*)malloc(size + 1);
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if(html == NULL) {
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fprintf(stderr, "Can't allocate mem for html file: %s\n", filename);
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exit(EXIT_FAILURE);
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}
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size_t nread = fread(html, 1, size, fh);
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if (nread != size) {
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fprintf(stderr, "could not read %ld bytes (" MyCORE_FMT_Z " bytes done)\n", size, nread);
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exit(EXIT_FAILURE);
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}
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fclose(fh);
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struct res_html res = {html, (size_t)size};
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return res;
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}
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int main(int argc, const char * argv[])
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{
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const char* path;
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if (argc == 2) {
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path = argv[1];
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}
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else {
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printf("Bad ARGV!\nUse: get_title_high_level <path_to_html_file>\n");
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exit(EXIT_FAILURE);
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}
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struct res_html res = load_html_file(path);
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// basic init
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myhtml_t* myhtml = myhtml_create();
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myhtml_init(myhtml, MyHTML_OPTIONS_DEFAULT, 1, 0);
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// init tree
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myhtml_tree_t* tree = myhtml_tree_create();
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myhtml_tree_init(tree, myhtml);
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// parse html
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myhtml_parse(tree, MyENCODING_UTF_8, res.html, res.size);
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// parse html
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myhtml_collection_t *collection = myhtml_get_nodes_by_tag_id(tree, NULL, MyHTML_TAG_TITLE, NULL);
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if(collection && collection->list && collection->length) {
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myhtml_tree_node_t *text_node = myhtml_node_child(collection->list[0]);
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if(text_node) {
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const char* text = myhtml_node_text(text_node, NULL);
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if(text)
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printf("Title: %s\n", text);
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}
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}
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// release resources
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myhtml_collection_destroy(collection);
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myhtml_tree_destroy(tree);
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myhtml_destroy(myhtml);
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free(res.html);
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return 0;
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}
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