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

90 lines
2.6 KiB
C

/*
Copyright (C) 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>text for manipulate</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(tree, MyENCODING_UTF_8, html, strlen(html));
// print original tree
printf("Original Tree:\n");
myhtml_serialization_tree_callback(myhtml_tree_get_node_html(tree), serialization_callback, NULL);
printf("Change word: manipulate => test\n");
// get text node by index
myhtml_collection_t *collection = myhtml_get_nodes_by_tag_id(tree, NULL, MyHTML_TAG__TEXT, NULL);
if(collection && collection->list && collection->length)
{
myhtml_tree_node_t *text_node = collection->list[0];
mycore_string_t *str = myhtml_node_string(text_node);
// change data
char *data = mycore_string_data(str);
for (size_t i = 0; i < mycore_string_length(str); i++)
{
if(data[i] == 'm') {
sprintf(&data[i], "test");
// set new length
mycore_string_length_set(str, (i + 4));
break;
}
}
}
printf("Changed Tree:\n");
// print tree
myhtml_serialization_tree_callback(myhtml_tree_get_node_html(tree), serialization_callback, NULL);
// release resources
myhtml_tree_destroy(tree);
myhtml_destroy(myhtml);
return 0;
}