[Util.rawEncode] Change complicated if expression to simpler array lookup

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@21537 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Util.java

@@ -652,11 +652,26 @@ public class Util {
         }
     }
 
+    private static final boolean[] uriMap = new boolean[123];
+    static {
+        String raw =
+    "!  $ &'()*+,-. 0123456789   =  @ABCDEFGHIJKLMNOPQRSTUVWXYZ    _ abcdefghijklmnopqrstuvwxyz";
+  //  "# %         /          :;< >?                           [\]^ `                          {|}~
+  //  ^--so these are encoded
+        int i;
+        // Encode control chars and space
+        for (i = 0; i < 33; i++) uriMap[i] = true;
+        for (int j = 0; j < raw.length(); i++, j++)
+            uriMap[i] = (raw.charAt(j) == ' ');
+        // If we add encodeQuery() just add a 2nd map to encode &+=
+        // queryMap[38] = queryMap[43] = queryMap[61] = true;
+    }
+
     /**
      * Encode a single path component for use in an HTTP URL.
      * Escapes all non-ASCII, general unsafe (space and "#%<>[\]^`{|}~)
-     * and HTTP special characters (/;:?) as specified in RFC1738,
-     * plus backslash (Windows path separator).
+     * and HTTP special characters (/;:?) as specified in RFC1738.
+     * (so alphanumeric and !@$&*()-_=+',. are not encoded)
      * Note that slash(/) is encoded, so the given string should be a
      * single path component used in constructing a URL.
      * Method name inspired by PHP's rawurlencode.
@@ -669,8 +684,7 @@ public class Util {
         char c;
         for (int i = 0, m = s.length(); i < m; i++) {
             c = s.charAt(i);
-            if ((c<64 || c>90) && (c<97 || c>122) && (c<38 || c>57 || c==47)
-                    && c!=61 && c!=36 && c!=33 && c!=95) {
+            if (c > 122 || uriMap[c]) {
                 if (!escaped) {
                     out = new StringBuilder(i + (m - i) * 3);
                     out.append(s.substring(0, i));