From 534c441fd8172322ff5eaad54a1d26b9d8492c39 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Wed, 15 Sep 2021 18:22:45 +0200
Subject: Initial commit, finished

---
 src/HtmlTree.c | 171 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/HtmlTree.c

(limited to 'src')

diff --git a/src/HtmlTree.c b/src/HtmlTree.c
new file mode 100644
index 0000000..f4deb88
--- /dev/null
+++ b/src/HtmlTree.c
@@ -0,0 +1,171 @@
+#include "../include/HtmlTree.h"
+#include <stdlib.h>
+
+static void html_node_deinit(HtmlNode *self);
+
+static void html_node_init(HtmlNode *self) {
+    self->name_or_value.data = NULL;
+    self->name_or_value.size = 0;
+    self->parent = NULL;
+    self->first_child = NULL;
+    self->last_child = NULL;
+    self->first_attr = NULL;
+    self->node_type = HTML_NODE_NODE;
+}
+
+static HtmlNode* html_node_create(HtmlStringView name_or_value, HtmlNode *parent, HtmlNodeType node_type) {
+    HtmlNode *new_node = malloc(sizeof(HtmlNode));
+    if(!new_node)
+        return NULL;
+
+    new_node->name_or_value = name_or_value;
+    new_node->parent = parent;
+    new_node->first_child = NULL;
+    new_node->last_child = NULL;
+    new_node->first_attr = NULL;
+    new_node->node_type = node_type;
+
+    if(parent) {
+        HtmlNodeChild *node_child = malloc(sizeof(HtmlNodeChild));
+        if(!node_child) {
+            free(new_node);
+            return NULL;
+        }
+
+        node_child->node = new_node;
+        node_child->next = NULL;
+
+        if(!parent->first_child) {
+            parent->first_child = node_child;
+            parent->last_child = node_child;
+        } else {
+            parent->last_child->next = node_child;
+            parent->last_child = node_child;
+        }
+    }
+
+    return new_node;
+}
+
+static void html_node_child_deinit(HtmlNodeChild *self) {
+    html_node_deinit(self->node);
+    free(self->node);
+    self->node = NULL;
+
+    if(self->next) {
+        html_node_child_deinit(self->next);
+        free(self->next);
+        self->next = NULL;
+    }
+}
+
+static void html_attribute_deinit(HtmlAttribute *self) {
+    if(self->next) {
+        html_attribute_deinit(self->next);
+        free(self->next);
+        self->next = NULL;
+    }
+}
+
+void html_node_deinit(HtmlNode *self) {
+    self->name_or_value.data = NULL;
+    self->name_or_value.size = 0;
+    self->parent = NULL;
+
+    if(self->first_child) {
+        html_node_child_deinit(self->first_child);
+        free(self->first_child);
+        self->first_child = NULL;
+        self->last_child = NULL;
+    }
+
+    if(self->first_attr) {
+        html_attribute_deinit(self->first_attr);
+        free(self->first_attr);
+        self->first_attr = NULL;
+    }
+}
+
+typedef struct {
+    HtmlNode *current_node;
+    HtmlAttribute *current_node_last_attribute;
+} ParseUserdata;
+
+static int parse_callback(HtmlParser *html_parser, HtmlParseType parse_type, void *userdata) {
+    ParseUserdata *parse_userdata = userdata;
+
+    switch(parse_type) {
+        case HTML_PARSE_TAG_START: {
+            HtmlNode *new_node = html_node_create(html_parser->tag_name, parse_userdata->current_node, HTML_NODE_NODE);
+            if(!new_node)
+                return 1;
+
+            parse_userdata->current_node = new_node;
+            parse_userdata->current_node_last_attribute = NULL;
+            break;
+        }
+        case HTML_PARSE_TAG_END: {
+            HtmlNode *parent_node = parse_userdata->current_node->parent;
+            if(parent_node) {
+                parse_userdata->current_node = parent_node;
+                parse_userdata->current_node_last_attribute = NULL;
+            }
+            break;
+        }
+        case HTML_PARSE_ATTRIBUTE: {
+            HtmlAttribute *new_attr = malloc(sizeof(HtmlAttribute));
+            if(!new_attr)
+                return 1;
+
+            new_attr->key = html_parser->attribute_key;
+            new_attr->value = html_parser->attribute_value;
+            new_attr->next = NULL;
+
+            if(parse_userdata->current_node_last_attribute)
+                parse_userdata->current_node_last_attribute->next = new_attr;
+            else
+                parse_userdata->current_node->first_attr = new_attr;
+
+            parse_userdata->current_node_last_attribute = new_attr;
+            break;
+        }
+        case HTML_PARSE_TEXT:
+        case HTML_PARSE_JAVASCRIPT_CODE: {
+            HtmlNode *new_node = html_node_create(html_parser->text_stripped, parse_userdata->current_node, parse_type == HTML_PARSE_TEXT ? HTML_NODE_TEXT : HTML_NODE_JS);
+            if(!new_node)
+                return 1;
+
+            parse_userdata->current_node_last_attribute = NULL;
+            break;
+        }
+    }
+
+    return 0;
+}
+
+int html_parse_to_tree(HtmlTree *self, const char *html_source, size_t len) {
+    int result;
+    ParseUserdata parse_userdata;
+    html_node_init(&self->root_node);
+
+    parse_userdata.current_node = &self->root_node;
+    parse_userdata.current_node_last_attribute = NULL;
+    result = html_parser_parse(html_source, len, parse_callback, &parse_userdata);
+
+    if(result != 0)
+        html_tree_deinit(self);
+    return result;
+}
+
+void html_tree_deinit(HtmlTree *self) {
+    html_node_deinit(&self->root_node);
+}
+
+HtmlAttribute* html_node_get_attribute_by_name(HtmlNode *self, HtmlStringView name) {
+    HtmlAttribute *attr = self->first_attr;
+    for(; attr; attr = attr->next) {
+        if(html_string_view_equals_case_insensitive(&attr->key, &name))
+            return attr;
+    }
+    return NULL;
+}
-- 
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