rebase(d)

1 files changed, 80 insertions, 0 deletions

diff --git a/src/Utility/Unescape.c b/src/Utility/Unescape.c
new file mode 100644
index 0000000..e2968b2
--- /dev/null
+++ b/src/Utility/Unescape.c
@@ -0,0 +1,80 @@
+#include "Unescape.h"
+#include "Utility.h"
+#include <stdlib.h>
+#include <string.h>
+
+char *unescape_search_url(const char *input) {
+  if (!input) return NULL;
+
+  const char *key = NULL;
+  const char *start = NULL;
+  const char *end = NULL;
+  size_t len = 0;
+
+  if (strstr(input, "uddg=")) {
+    key = "uddg=";
+    start = strstr(input, key);
+    if (!start) return NULL;
+    start += strlen(key);
+    end = strchr(start, '&');
+    len = end ? (size_t)(end - start) : strlen(start);
+  }
+
+  else if (strstr(input, "RU=")) {
+    key = "RU=";
+    start = strstr(input, key);
+    if (!start) return strdup(input);
+    start += strlen(key);
+    end = strchr(start, '/');
+    len = end ? (size_t)(end - start) : strlen(start);
+  }
+
+  else {
+    return strdup(input);
+  }
+
+  char *output = (char *)malloc(len * 3 + 1);
+  if (!output) return NULL;
+
+  size_t i = 0, j = 0;
+  while (i < len) {
+    if (start[i] == '%' && i + 2 < len) {
+      int high = hex_to_int(start[i + 1]);
+      int low = hex_to_int(start[i + 2]);
+      if (high != -1 && low != -1) {
+        output[j++] = (char)((high << 4) | low);
+        i += 3;
+      } else {
+        output[j++] = start[i++];
+      }
+    } else if (start[i] == '+') {
+      output[j++] = ' ';
+      i++;
+    } else {
+      output[j++] = start[i++];
+    }
+  }
+  output[j] = '\0';
+
+  return output;
+}
+
+char *url_decode_query(const char *src) {
+  if (!src) return NULL;
+  char *res = strdup(src);
+  char *p = res;
+  while (*src) {
+    if (*src == '+') {
+      *p++ = ' ';
+    } else if (*src == '%' && src[1] && src[2]) {
+      char hex[3] = {src[1], src[2], '\0'};
+      *p++ = (char)strtol(hex, NULL, 16);
+      src += 2;
+    } else {
+      *p++ = *src;
+    }
+    src++;
+  }
+  *p = '\0';
+  return res;
+}