removed libcurl dependency from artwork plugin

1 files changed, 104 insertions, 0 deletions

diff --git a/plugins/artwork/escape.c b/plugins/artwork/escape.c
new file mode 100644
index 00000000..3e3653e4
--- /dev/null
+++ b/plugins/artwork/escape.c
@@ -0,0 +1,104 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+/* Escape and unescape URL encoding in strings. The functions return a new
+ * allocated string or NULL if an error occurred.  */
+
+#include <ctype.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Portable character check (remember EBCDIC). Do not use isalnum() because
+   its behavior is altered by the current locale.
+   See http://tools.ietf.org/html/rfc3986#section-2.3
+*/
+static int Curl_isunreserved(unsigned char in)
+{
+  switch (in) {
+    case '0': case '1': case '2': case '3': case '4':
+    case '5': case '6': case '7': case '8': case '9':
+    case 'a': case 'b': case 'c': case 'd': case 'e':
+    case 'f': case 'g': case 'h': case 'i': case 'j':
+    case 'k': case 'l': case 'm': case 'n': case 'o':
+    case 'p': case 'q': case 'r': case 's': case 't':
+    case 'u': case 'v': case 'w': case 'x': case 'y': case 'z':
+    case 'A': case 'B': case 'C': case 'D': case 'E':
+    case 'F': case 'G': case 'H': case 'I': case 'J':
+    case 'K': case 'L': case 'M': case 'N': case 'O':
+    case 'P': case 'Q': case 'R': case 'S': case 'T':
+    case 'U': case 'V': case 'W': case 'X': case 'Y': case 'Z':
+    case '-': case '.': case '_': case '~':
+      return 1;
+    default:
+      break;
+  }
+  return 0;
+}
+
+char *uri_escape(const char *string, int inlength)
+{
+  size_t alloc = (inlength?(size_t)inlength:strlen(string))+1;
+  char *ns;
+  char *testing_ptr = NULL;
+  unsigned char in; /* we need to treat the characters unsigned */
+  size_t newlen = alloc;
+  int strindex=0;
+  size_t length;
+
+  ns = malloc(alloc);
+  if(!ns)
+    return NULL;
+
+  length = alloc-1;
+  while(length--) {
+    in = *string;
+
+    if (Curl_isunreserved(in)) {
+      /* just copy this */
+      ns[strindex++]=in;
+    }
+    else {
+      /* encode it */
+      newlen += 2; /* the size grows with two, since this'll become a %XX */
+      if(newlen > alloc) {
+        alloc *= 2;
+        testing_ptr = realloc(ns, alloc);
+        if(!testing_ptr) {
+          free( ns );
+          return NULL;
+        }
+        else {
+          ns = testing_ptr;
+        }
+      }
+
+      snprintf(&ns[strindex], 4, "%%%02X", in);
+
+      strindex+=3;
+    }
+    string++;
+  }
+  ns[strindex]=0; /* terminate it */
+  return ns;
+}