refactor: put HTTP and XML logic into reusable modules

1 files changed, 65 insertions, 0 deletions

diff --git a/src/Utility/XmlHelper.c b/src/Utility/XmlHelper.c
new file mode 100644
index 0000000..4fed96a
--- /dev/null
+++ b/src/Utility/XmlHelper.c
@@ -0,0 +1,65 @@
+#include "XmlHelper.h"
+#include <stdlib.h>
+#include <string.h>
+
+SearchResult *xml_result_alloc(int count, int max_results) {
+  if (count <= 0 || max_results <= 0) {
+    return NULL;
+  }
+  int actual = (count < max_results) ? count : max_results;
+  return (SearchResult *)calloc(actual, sizeof(SearchResult));
+}
+
+void xml_result_free(SearchResult *results, int count) {
+  if (!results) {
+    return;
+  }
+  for (int i = 0; i < count; i++) {
+    free(results[i].url);
+    free(results[i].title);
+    free(results[i].snippet);
+  }
+  free(results);
+}
+
+xmlXPathObjectPtr xml_xpath_eval(xmlXPathContextPtr ctx, const char *xpath) {
+  if (!ctx || !xpath) {
+    return NULL;
+  }
+  return xmlXPathEvalExpression((const xmlChar *)xpath, ctx);
+}
+
+char *xml_node_content(xmlNodePtr node) {
+  if (!node) {
+    return NULL;
+  }
+  char *content = (char *)xmlNodeGetContent(node);
+  return content;
+}
+
+char *xpath_text(xmlDocPtr doc, const char *xpath) {
+  if (!doc || !xpath) {
+    return NULL;
+  }
+
+  xmlXPathContextPtr ctx = xmlXPathNewContext(doc);
+  if (!ctx) {
+    return NULL;
+  }
+
+  xmlXPathObjectPtr obj = xmlXPathEvalExpression((const xmlChar *)xpath, ctx);
+  xmlXPathFreeContext(ctx);
+
+  if (!obj || !obj->nodesetval || obj->nodesetval->nodeNr == 0) {
+    if (obj)
+      xmlXPathFreeObject(obj);
+    return NULL;
+  }
+
+  xmlChar *content = xmlNodeGetContent(obj->nodesetval->nodeTab[0]);
+  char *result = content ? strdup((char *)content) : NULL;
+  if (content)
+    xmlFree(content);
+  xmlXPathFreeObject(obj);
+  return result;
+}