Modest/examples/myhtml/attributes_high_level.c
2017-03-14 11:28:54 +03:00

83 lines
2.7 KiB
C

/*
Copyright (C) 2015-2016 Alexander Borisov
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Author: lex.borisov@gmail.com (Alexander Borisov)
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <myhtml/api.h>
mystatus_t serialization_callback(const char* data, size_t len, void* ctx)
{
printf("%.*s", (int)len, data);
return MyCORE_STATUS_OK;
}
int main(int argc, const char * argv[])
{
char html[] = "<div></div>";
// basic init
myhtml_t* myhtml = myhtml_create();
myhtml_init(myhtml, MyHTML_OPTIONS_DEFAULT, 1, 0);
// init tree
myhtml_tree_t* tree = myhtml_tree_create();
myhtml_tree_init(tree, myhtml);
// parse html
myhtml_parse_fragment(tree, MyENCODING_UTF_8, html, strlen(html), MyHTML_TAG_DIV, MyHTML_NAMESPACE_HTML);
// get first DIV from index
myhtml_collection_t *div_list = myhtml_get_nodes_by_name(tree, NULL, "div", 3, NULL);
myhtml_tree_node_t *node = div_list->list[0];
// print original tree
printf("Original tree:\n");
myhtml_serialization_tree_callback(myhtml_tree_get_node_html(tree), serialization_callback, NULL);
printf("For a test; Create and delete 100000 attrs...\n");
for(size_t j = 0; j < 100000; j++) {
myhtml_tree_attr_t *attr = myhtml_attribute_add(node, "key", 3, "value", 5, MyENCODING_UTF_8);
myhtml_attribute_delete(tree, node, attr);
}
// add first attr in first div in tree
myhtml_attribute_add(node, "key", 3, "value", 5, MyENCODING_UTF_8);
printf("Modified tree:\n");
myhtml_serialization_tree_callback(myhtml_tree_get_node_html(tree), serialization_callback, NULL);
// get attr by key name
myhtml_tree_attr_t *gets_attr = myhtml_attribute_by_key(node, "key", 3);
const char *attr_char = myhtml_attribute_value(gets_attr, NULL);
printf("Get attr by key name \"key\": %s\n", attr_char);
// release resources
myhtml_collection_destroy(div_list);
myhtml_tree_destroy(tree);
myhtml_destroy(myhtml);
return 0;
}