1 files changed, 71 insertions, 0 deletions
diff --git a/libjava/java/net/URLEncoder.java b/libjava/java/net/URLEncoder.java
new file mode 100644
index 0000000..83295ea
--- /dev/null
+++ b/libjava/java/net/URLEncoder.java
@@ -0,0 +1,71 @@
+// URLEncoder.java - Provides a method for encoding strings according to
+//		     application/x-www-form-urlencoded MIME type.
+
+/* Copyright (C) 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+package java.net;
+import java.io.UnsupportedEncodingException;
+
+/**
+ * @author Warren Levy <warrenl@cygnus.com>
+ * @date April 22, 1999.
+ */
+
+/**
+ * Written using on-line Java Platform 1.2 API Specification, as well
+ * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
+ * Status:  Believed complete and correct.
+ */
+
+public class URLEncoder
+{
+  // This method, per the JCL, is conservative in that it encodes
+  // some "allowable" characters as % triplets.
+  public static String encode(String s)
+  {
+    // Get the bytes in ISO-Latin-1 (i.e. 8859_1) per the JCL.
+    // Even though it is the default in most cases, it's specified here
+    // just in case System.getProperty("file.encoding") is not "8859_1".
+    String result = "";
+    try
+      {
+	byte[] buf = s.getBytes("8859_1");
+	int start = 0;
+	for (int i = 0; i < buf.length; i++)
+	  // For efficiency, check the byte in order of most likely
+	  // possibility so as to minimize the number of comparisons.
+	  // Hence, exclude all the alphanumeric & allowed special chars first.
+	  if ((buf[i] >= 'a' && buf[i] <= 'z') ||
+	      (buf[i] >= 'A' && buf[i] <= 'Z') ||
+	      (buf[i] >= '0' && buf[i] <= '9') ||
+	      buf[i] == '-' || buf[i] == '_' || buf[i] == '.' || buf[i] == '*')
+	    ; // This is the most likely case so exclude first for efficiency.
+	  else if (buf[i] == ' ')
+	    buf[i] = (byte) '+';  // Replace space char with plus symbol.
+	  else
+	    {
+	      result = result + new String(buf, start, i - start, "8859_1") +
+			"%" + Integer.toHexString(((int) buf[i]) & 0xFF);
+	      start = i + 1;
+	    }
+
+	// Append remainder of allowable chars from the string, if any.
+	if (start < buf.length)
+	  result = result +
+		   new String(buf, start, buf.length - start, "8859_1");
+      }
+    catch (UnsupportedEncodingException ex)
+      {
+	// This should never happen as "8859_1" is the default encoding.
+	return s;
+      }
+
+    return result;
+  }
+}