PageRenderTime 15ms CodeModel.GetById 11ms app.highlight 2ms RepoModel.GetById 1ms app.codeStats 0ms

/scalate-core/src/main/scala/org/fusesource/scalate/support/Links.scala

http://github.com/scalate/scalate
Scala | 41 lines | 15 code | 4 blank | 22 comment | 6 complexity | 9827d138ac8ca766705e6a575fff313b MD5 | raw file
 1/**
 2 * Copyright (C) 2009-2011 the original author or authors.
 3 * See the notice.md file distributed with this work for additional
 4 * information regarding copyright ownership.
 5 *
 6 * Licensed under the Apache License, Version 2.0 (the "License");
 7 * you may not use this file except in compliance with the License.
 8 * You may obtain a copy of the License at
 9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18package org.fusesource.scalate.support
19
20object Links {
21
22  /**
23   * Converts an absolute link rom the root directory to a relative link from the current
24   * request URI
25   */
26  def convertAbsoluteLinks(link: String, requestUri: String): String = if (link.startsWith("/")) {
27    var n = link.stripPrefix("/").split('/').toList
28    var r = requestUri.stripPrefix("/").split('/').toList
29
30    // lets strip the common prefixes off
31    while (n.size > 1 && r.size > 1 && n.head == r.head) {
32      n = n.tail
33      r = r.tail
34    }
35
36    val prefix = "../" * (r.size - 1)
37    n.mkString(prefix, "/", "")
38  } else {
39    link
40  }
41}