From fab7a00da328debef4fbeba9eb21fc02cf21675d Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 19 Aug 2023 13:26:46 +0200
Subject: Update html-parser version to latest, add html_node_find_child

---
 depends/html-parser |  2 +-
 include/HtmlTree.h  |  7 +++++++
 src/HtmlTree.c      | 41 ++++++++++++++++++++++++++++++++++++++++-
 tests/main.c        |  5 +++--
 4 files changed, 51 insertions(+), 4 deletions(-)

diff --git a/depends/html-parser b/depends/html-parser
index 66ec83b..5ea469d 160000
--- a/depends/html-parser
+++ b/depends/html-parser
@@ -1 +1 @@
-Subproject commit 66ec83b862ea2a8dbda1c1f3663af88a8d12d9bc
+Subproject commit 5ea469de363ab319f1cf0707c56bf31652877958
diff --git a/include/HtmlTree.h b/include/HtmlTree.h
index 4378152..2f25e1d 100644
--- a/include/HtmlTree.h
+++ b/include/HtmlTree.h
@@ -54,6 +54,13 @@ void html_tree_deinit(HtmlTree *self);
 /* Case insensitive match. Returns NULL if not found */
 HtmlAttribute* html_node_get_attribute_by_name(HtmlNode *self, HtmlStringView name);
 
+/*
+    Returns NULL if not found.
+    This function is not recursive.
+    Case insensitive search.
+*/
+HtmlNode* html_node_find_child(HtmlNode *self, const char *tag_name, const char *attribute_name, const char *attribute_value);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/HtmlTree.c b/src/HtmlTree.c
index faef08a..4c1628c 100644
--- a/src/HtmlTree.c
+++ b/src/HtmlTree.c
@@ -1,5 +1,6 @@
 #include "../include/HtmlTree.h"
 #include <stdlib.h>
+#include <string.h>
 #include <assert.h>
 
 static void html_node_deinit(HtmlNode *self);
@@ -123,7 +124,11 @@ static int parse_callback(HtmlParser *html_parser, HtmlParseType parse_type, voi
         }
         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);
+            HtmlNode *new_node;
+            if(html_parser->text_stripped.size == 0)
+                return 0;
+
+            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;
 
@@ -162,3 +167,37 @@ HtmlAttribute* html_node_get_attribute_by_name(HtmlNode *self, HtmlStringView na
     }
     return NULL;
 }
+
+HtmlNode* html_node_find_child(HtmlNode *self, const char *tag_name, const char *attribute_name, const char *attribute_value) {
+    HtmlStringView tag;
+    HtmlStringView attr_name;
+    HtmlStringView attr_value;
+    HtmlNodeChild *child;
+
+    tag.data = tag_name;
+    tag.size = strlen(tag_name);
+
+    attr_name.data = attribute_name;
+    attr_name.size = strlen(attribute_name);
+
+    attr_value.data = attribute_value;
+    attr_value.size = strlen(attribute_value);
+
+    for(child = self->first_child; child; child = child->next) {
+        HtmlAttribute *attr;
+        if(child->node.node_type != HTML_NODE_NODE)
+            continue;
+
+        if(!html_string_view_equals_case_insensitive(&child->node.name_or_value, &tag))
+            continue;
+
+        attr = html_node_get_attribute_by_name(&child->node, attr_name);
+        if(!attr)
+            continue;
+
+        if(html_string_view_equals_case_insensitive(&attr->value, &attr_value))
+            return &child->node;
+    }
+
+    return NULL;
+}
diff --git a/tests/main.c b/tests/main.c
index 4c9e93c..7ba19f5 100644
--- a/tests/main.c
+++ b/tests/main.c
@@ -4,6 +4,7 @@
 #include <string.h>
 
 char* file_get_content(const char *path, long *filesize) {
+    char *data;
     FILE *file = fopen(path, "rb");
     if(!file) {
         perror(path);
@@ -14,7 +15,7 @@ char* file_get_content(const char *path, long *filesize) {
     *filesize = ftell(file);
     fseek(file, 0, SEEK_SET);
 
-    char *data = malloc(*filesize);
+    data = malloc(*filesize);
     fread(data, 1, *filesize, file);
     fclose(file);
     return data;
@@ -56,7 +57,7 @@ void html_node_print(HtmlNode *node) {
     }
 }
 
-int main() {
+int main(void) {
     int result;
     HtmlTree html_tree;
     long filesize;
-- 
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