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/*
Copyright (C) 2016-2017 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 "modest/finder/finder.h"
#include "modest/finder/resource.h"
modest_finder_t * modest_finder_create(void)
{
return (modest_finder_t*)mycore_calloc(1, sizeof(modest_finder_t));
}
mystatus_t modest_finder_init(modest_finder_t* finder)
{
return MODEST_STATUS_OK;
}
void modest_finder_clean(modest_finder_t* finder)
{
}
modest_finder_t * modest_finder_destroy(modest_finder_t* finder, bool self_destroy)
{
if(finder == NULL)
return NULL;
if(self_destroy) {
mycore_free(finder);
return NULL;
}
return finder;
}
modest_finder_t * modest_finder_create_simple(void)
{
modest_finder_t *finder = modest_finder_create();
if(finder == NULL)
return NULL;
if(modest_finder_init(finder) != MODEST_STATUS_OK)
return modest_finder_destroy(finder, true);
return finder;
}
void modest_finder_callback_found_with_collection(modest_finder_t* finder, myhtml_tree_node_t* node, mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector, mycss_selectors_specificity_t* spec, void* ctx)
{
myhtml_collection_t* collection = (myhtml_collection_t*)ctx;
if(myhtml_collection_check_size(collection, 1, 1024) == MyHTML_STATUS_OK) {
collection->list[ collection->length ] = node;
collection->length++;
}
}
void modest_finder_callback_found_with_bool(modest_finder_t* finder, myhtml_tree_node_t* node, mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector, mycss_selectors_specificity_t* spec, void* ctx)
{
bool *is = (bool*)ctx;
if(*is == false)
*is = true;
}
void modest_finder_specificity_inc(mycss_selectors_entry_t* selector, mycss_selectors_specificity_t* spec)
{
switch (selector->type) {
case MyCSS_SELECTORS_TYPE_ID:
spec->a++;
break;
case MyCSS_SELECTORS_TYPE_CLASS:
case MyCSS_SELECTORS_TYPE_ATTRIBUTE:
case MyCSS_SELECTORS_TYPE_PSEUDO_CLASS_FUNCTION:
case MyCSS_SELECTORS_TYPE_PSEUDO_CLASS:
spec->b++;
break;
case MyCSS_SELECTORS_TYPE_ELEMENT:
case MyCSS_SELECTORS_TYPE_PSEUDO_ELEMENT_FUNCTION:
case MyCSS_SELECTORS_TYPE_PSEUDO_ELEMENT:
spec->c++;
break;
default:
break;
}
}
modest_finder_t * modest_finder_by_stylesheet(mycss_stylesheet_t *stylesheet, myhtml_collection_t** collection, myhtml_tree_node_t* base_node)
{
if(collection == NULL || base_node == NULL || stylesheet == NULL)
return NULL;
modest_finder_t *finder = modest_finder_create();
if(finder == NULL)
return NULL;
mystatus_t status = modest_finder_init(finder);
if(status != MODEST_STATUS_OK) {
modest_finder_destroy(finder, true);
return NULL;
}
if(*collection == NULL) {
mystatus_t status;
*collection = myhtml_collection_create(4096, &status);
if(status) {
modest_finder_destroy(finder, true);
return NULL;
}
}
else
myhtml_collection_clean(*collection);
mycss_selectors_list_t *selector_list = stylesheet->sel_list_first;
while(selector_list) {
for(size_t i = 0; i < selector_list->entries_list_length; i++) {
mycss_selectors_specificity_t spec = selector_list->entries_list[i].specificity;
modest_finder_node_combinator_begin(finder, base_node, selector_list, selector_list->entries_list[i].entry, &spec, modest_finder_callback_found_with_collection, *collection);
}
selector_list = selector_list->next;
}
return finder;
}
mystatus_t modest_finder_by_selectors_list(modest_finder_t* finder, myhtml_tree_node_t* scope_node,
mycss_selectors_list_t* selector_list, myhtml_collection_t** collection)
{
if(finder == NULL || selector_list == NULL || scope_node == NULL || collection == NULL)
return MODEST_STATUS_ERROR;
if(*collection == NULL) {
mystatus_t status;
*collection = myhtml_collection_create(4096, &status);
if(status)
return MODEST_STATUS_ERROR_MEMORY_ALLOCATION;
}
for(size_t i = 0; i < selector_list->entries_list_length; i++) {
mycss_selectors_specificity_t spec = selector_list->entries_list[i].specificity;
modest_finder_node_combinator_begin(finder, scope_node, selector_list, selector_list->entries_list[i].entry, &spec,
modest_finder_callback_found_with_collection, *collection);
}
return MODEST_STATUS_OK;
}
myhtml_tree_node_t * modest_finder_node_combinator_begin(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
myhtml_tree_node_t *node = base_node;
while(node) {
if(node->tag_id != MyHTML_TAG__TEXT && node->tag_id != MyHTML_TAG__COMMENT &&
modest_finder_static_selector_type_map[selector->type](finder, node, selector, spec))
{
if(selector->next == NULL) {
if(callback_found)
callback_found(finder, node, selector_list, selector, spec, ctx);
}
else {
myhtml_tree_node_t *find_node = modest_finder_static_selector_combinator_map[selector->next->combinator](finder, node, selector_list, selector->next, spec, callback_found, ctx);
if(find_node == NULL) {
while(node != base_node && node->next == NULL)
node = node->parent;
if(node == base_node)
break;
node = node->next;
continue;
}
}
}
if(node->child)
node = node->child;
else {
while(node != base_node && node->next == NULL)
node = node->parent;
if(node == base_node)
break;
node = node->next;
}
}
return NULL;
}
/* some */
myhtml_tree_node_t * modest_finder_node_combinator_undef(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
mycss_selectors_specificity_t match_spec = *spec;
if(base_node->tag_id != MyHTML_TAG__TEXT && base_node->tag_id != MyHTML_TAG__COMMENT &&
modest_finder_static_selector_type_map[selector->type](finder, base_node, selector, &match_spec)) {
if(selector->next == NULL) {
if(callback_found)
callback_found(finder, base_node, selector_list, selector, &match_spec, ctx);
}
else {
modest_finder_static_selector_combinator_map[selector->next->combinator](finder, base_node, selector_list, selector->next, &match_spec, callback_found, ctx);
}
}
return base_node;
}
/* E F or E >> F */
myhtml_tree_node_t * modest_finder_node_combinator_descendant(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
myhtml_tree_node_t *node = base_node->child;
while(node) {
mycss_selectors_specificity_t match_spec = *spec;
if(node->tag_id != MyHTML_TAG__TEXT && node->tag_id != MyHTML_TAG__COMMENT &&
modest_finder_static_selector_type_map[selector->type](finder, node, selector, &match_spec))
{
if(selector->next == NULL) {
if(callback_found)
callback_found(finder, node, selector_list, selector, &match_spec, ctx);
}
else {
myhtml_tree_node_t *find_node = modest_finder_static_selector_combinator_map[selector->next->combinator](finder, node, selector_list, selector->next, &match_spec, callback_found, ctx);
if(find_node == NULL) {
while(node != base_node && node->next == NULL)
node = node->parent;
if(node == base_node)
break;
node = node->next;
continue;
}
}
}
if(node->child)
node = node->child;
else {
while(node != base_node && node->next == NULL)
node = node->parent;
if(node == base_node)
break;
node = node->next;
}
}
return NULL;
}
/* E > F */
myhtml_tree_node_t * modest_finder_node_combinator_child(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
myhtml_tree_node_t *node = base_node->child;
while(node) {
mycss_selectors_specificity_t match_spec = *spec;
if(node->tag_id != MyHTML_TAG__TEXT && node->tag_id != MyHTML_TAG__COMMENT &&
modest_finder_static_selector_type_map[selector->type](finder, node, selector, &match_spec))
{
if(selector->next == NULL) {
if(callback_found)
callback_found(finder, node, selector_list ,selector, &match_spec, ctx);
}
else {
modest_finder_static_selector_combinator_map[selector->next->combinator](finder, node, selector_list, selector->next, &match_spec, callback_found, ctx);
}
}
node = node->next;
}
return base_node;
}
/* E + F */
myhtml_tree_node_t * modest_finder_node_combinator_next_sibling(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
myhtml_tree_node_t *node = base_node->next;
while(node) {
if(node->tag_id != MyHTML_TAG__TEXT && node->tag_id != MyHTML_TAG__COMMENT)
{
mycss_selectors_specificity_t match_spec = *spec;
if(modest_finder_static_selector_type_map[selector->type](finder, node, selector, &match_spec)) {
if(selector->next == NULL) {
if(callback_found)
callback_found(finder, node, selector_list, selector, &match_spec, ctx);
}
else {
modest_finder_static_selector_combinator_map[selector->next->combinator](finder, node, selector_list, selector->next, &match_spec, callback_found, ctx);
}
}
break;
}
node = node->next;
}
return base_node;
}
/* E ~ F */
myhtml_tree_node_t * modest_finder_node_combinator_following_sibling(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
myhtml_tree_node_t *node = base_node->next;
while(node) {
mycss_selectors_specificity_t match_spec = *spec;
if(node->tag_id != MyHTML_TAG__TEXT && node->tag_id != MyHTML_TAG__COMMENT &&
modest_finder_static_selector_type_map[selector->type](finder, node, selector, &match_spec))
{
if(selector->next == NULL) {
if(callback_found)
callback_found(finder, node, selector_list, selector, &match_spec, ctx);
}
else {
modest_finder_static_selector_combinator_map[selector->next->combinator](finder, node, selector_list, selector->next, &match_spec, callback_found, ctx);
}
}
node = node->next;
}
return base_node;
}
/* E || F */
myhtml_tree_node_t * modest_finder_node_combinator_column(modest_finder_t* finder, myhtml_tree_node_t* base_node,
mycss_selectors_list_t* selector_list, mycss_selectors_entry_t* selector,
mycss_selectors_specificity_t* spec, modest_finder_callback_f callback_found, void* ctx)
{
if(selector == NULL)
return NULL;
return base_node;
}
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