Moved URLEncoder into separate header, made it a global service.

[shibboleth/cpp-opensaml.git] / saml / binding / impl / URLEncoder.cpp

diff --git a/saml/binding/impl/URLEncoder.cpp b/saml/binding/impl/URLEncoder.cpp
new file mode 100644 (file)
index 0000000..81f0a51
--- /dev/null
+++ b/saml/binding/impl/URLEncoder.cpp
@@ -0,0 +1,77 @@
+/*
+ *  Copyright 2001-2006 Internet2
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * URLEncoder.cpp
+ * 
+ * Interface to a URL-encoding mechanism along with a
+ * default implementation. 
+ */
+
+#include "internal.h"
+#include "binding/URLEncoder.h"
+
+using namespace opensaml;
+using namespace std;
+
+static char x2c(char *what)
+{
+    register char digit;
+
+    digit = (what[0] >= 'A' ? ((what[0] & 0xdf) - 'A')+10 : (what[0] - '0'));
+    digit *= 16;
+    digit += (what[1] >= 'A' ? ((what[1] & 0xdf) - 'A')+10 : (what[1] - '0'));
+    return(digit);
+}
+
+void URLEncoder::decode(char* s) const
+{
+    register int x,y;
+
+    for(x=0,y=0;s[y];++x,++y)
+    {
+        if((s[x] = s[y]) == '%')
+        {
+            s[x] = x2c(&s[y+1]);
+            y+=2;
+        }
+        else if (s[x] == '+')
+        {
+            s[x] = ' ';
+        }
+    }
+    s[x] = '\0';
+}
+
+static inline char hexchar(unsigned short s)
+{
+    return (s<=9) ? ('0' + s) : ('A' + s - 10);
+}
+
+string URLEncoder::encode(const char* s) const
+{
+    string ret;
+    for (; *s; s++) {
+        if (isBad(*s)) {
+            ret+='%';
+            ret+=hexchar(*s >> 4);
+            ret+=hexchar(*s & 0x0F);
+        }
+        else
+            ret+=*s;
+    }
+    return ret;
+}