Merge branch 'libs/jetty/upstream' into libs/jetty/local

[gigi.git] / lib / jetty / org / eclipse / jetty / http / pathmap / RegexPathSpec.java

diff --git a/lib/jetty/org/eclipse/jetty/http/pathmap/RegexPathSpec.java b/lib/jetty/org/eclipse/jetty/http/pathmap/RegexPathSpec.java
new file mode 100644 (file)
index 0000000..0d83f3b
--- /dev/null
+++ b/lib/jetty/org/eclipse/jetty/http/pathmap/RegexPathSpec.java
@@ -0,0 +1,176 @@
+//
+//  ========================================================================
+//  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.http.pathmap;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class RegexPathSpec extends PathSpec
+{
+    protected Pattern pattern;
+
+    protected RegexPathSpec()
+    {
+        super();
+    }
+
+    public RegexPathSpec(String regex)
+    {
+        super.pathSpec = regex;
+        boolean inGrouping = false;
+        this.pathDepth = 0;
+        this.specLength = pathSpec.length();
+        // build up a simple signature we can use to identify the grouping
+        StringBuilder signature = new StringBuilder();
+        for (char c : pathSpec.toCharArray())
+        {
+            switch (c)
+            {
+                case '[':
+                    inGrouping = true;
+                    break;
+                case ']':
+                    inGrouping = false;
+                    signature.append('g'); // glob
+                    break;
+                case '*':
+                    signature.append('g'); // glob
+                    break;
+                case '/':
+                    if (!inGrouping)
+                    {
+                        this.pathDepth++;
+                    }
+                    break;
+                default:
+                    if (!inGrouping)
+                    {
+                        if (Character.isLetterOrDigit(c))
+                        {
+                            signature.append('l'); // literal (exact)
+                        }
+                    }
+                    break;
+            }
+        }
+        this.pattern = Pattern.compile(pathSpec);
+
+        // Figure out the grouping based on the signature
+        String sig = signature.toString();
+
+        if (Pattern.matches("^l*$",sig))
+        {
+            this.group = PathSpecGroup.EXACT;
+        }
+        else if (Pattern.matches("^l*g+",sig))
+        {
+            this.group = PathSpecGroup.PREFIX_GLOB;
+        }
+        else if (Pattern.matches("^g+l+$",sig))
+        {
+            this.group = PathSpecGroup.SUFFIX_GLOB;
+        }
+        else
+        {
+            this.group = PathSpecGroup.MIDDLE_GLOB;
+        }
+    }
+
+    public Matcher getMatcher(String path)
+    {
+        return this.pattern.matcher(path);
+    }
+
+    @Override
+    public String getPathInfo(String path)
+    {
+        // Path Info only valid for PREFIX_GLOB types
+        if (group == PathSpecGroup.PREFIX_GLOB)
+        {
+            Matcher matcher = getMatcher(path);
+            if (matcher.matches())
+            {
+                if (matcher.groupCount() >= 1)
+                {
+                    String pathInfo = matcher.group(1);
+                    if ("".equals(pathInfo))
+                    {
+                        return "/";
+                    }
+                    else
+                    {
+                        return pathInfo;
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public String getPathMatch(String path)
+    {
+        Matcher matcher = getMatcher(path);
+        if (matcher.matches())
+        {
+            if (matcher.groupCount() >= 1)
+            {
+                int idx = matcher.start(1);
+                if (idx > 0)
+                {
+                    if (path.charAt(idx - 1) == '/')
+                    {
+                        idx--;
+                    }
+                    return path.substring(0,idx);
+                }
+            }
+            return path;
+        }
+        return null;
+    }
+
+    public Pattern getPattern()
+    {
+        return this.pattern;
+    }
+
+    @Override
+    public String getRelativePath(String base, String path)
+    {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public boolean matches(final String path)
+    {
+        int idx = path.indexOf('?');
+        if (idx >= 0)
+        {
+            // match only non-query part
+            return getMatcher(path.substring(0,idx)).matches();
+        }
+        else
+        {
+            // match entire path
+            return getMatcher(path).matches();
+        }
+    }
+}