Diff: services/http/util/urlencode.cpp

Revision:

0:ec559500a63f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/services/http/util/urlencode.cpp	Fri Apr 08 14:39:41 2011 +0000
@@ -0,0 +1,80 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "url.h"
+#include <stdlib.h>
+#include <ctype.h>
+
+//From http://www.geekhideout.com/urlcode.shtml
+
+char from_hex(char ch);
+char to_hex(char code);
+
+/* Converts a hex character to its integer value */
+char from_hex(char ch) {
+  return isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10;
+}
+
+/* Converts an integer value to its hex character*/
+char to_hex(char code) {
+  static char hex[] = "0123456789abcdef";
+  return hex[code & 15];
+}
+
+/* Returns a url-encoded version of str */
+/* IMPORTANT: be sure to free() the returned string after use */
+char *url_encode(char *str) {
+  char *pstr = str, *buf = (char*)malloc(strlen(str) * 3 + 1), *pbuf = buf;
+  while (*pstr) {
+    if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~') 
+      *pbuf++ = *pstr;
+    else if (*pstr == ' ') 
+      *pbuf++ = '+';
+    else 
+      *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
+    pstr++;
+  }
+  *pbuf = '\0';
+  return buf;
+}
+
+/* Returns a url-decoded version of str */
+/* IMPORTANT: be sure to free() the returned string after use */
+char *url_decode(char *str) {
+  char *pstr = str, *buf = (char*)malloc(strlen(str) + 1), *pbuf = buf;
+  while (*pstr) {
+    if (*pstr == '%') {
+      if (pstr[1] && pstr[2]) {
+        *pbuf++ = from_hex(pstr[1]) << 4 | from_hex(pstr[2]);
+        pstr += 2;
+      }
+    } else if (*pstr == '+') { 
+      *pbuf++ = ' ';
+    } else {
+      *pbuf++ = *pstr;
+    }
+    pstr++;
+  }
+  *pbuf = '\0';
+  return buf;
+}