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Added:
openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/TextProcessingUtility.java
URL:
http://svn.apache.org/viewvc/openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/TextProcessingUtility.java?rev=947912&view=auto
==============================================================================
---
openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/TextProcessingUtility.java
(added)
+++
openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/TextProcessingUtility.java
Tue May 25 04:28:30 2010
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+package openbook.tools.util;
+
+public class TextProcessingUtility {
+ /**
+ * Replaces special characters < and > in a string.
+ * The complexity is <em>not</em> to replace if the tags represent a
hyperlink.
+ */
+ public static String replaceHTMLSpecialCharacters(String txt) {
+ boolean inHyperlink = false;
+ StringBuilder buf = new StringBuilder();
+ int L = txt.length();
+ for (int i = 0; i < L; i++) {
+ char ch = txt.charAt(i);
+ if (!inHyperlink) {
+ if (ch == '<') {
+ String ahead = txt.substring(i, Math.min(i+3, L));
+ if (ahead.equalsIgnoreCase("<A ")) {
+ inHyperlink = true;
+ buf.append(ch);
+ } else {
+ buf.append(ch == '>' ? ">" : ch == '<' ? "<" :
ch);
+ }
+ } else {
+ buf.append(ch == '>' ? ">" : ch == '<' ? "<" : ch);
+ }
+ } else { // inside a hyperlink tag. Do not translate characters
+ buf.append(ch);
+ if (ch == '>') {
+ String lookback = txt.substring(Math.max(0, i-4), i);
+ if (lookback.equalsIgnoreCase("</A")) {
+ inHyperlink = false;
+ }
+ }
+ }
+ }
+ return buf.toString();
+ }
+
+}
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Added:
openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/URIUtils.java
URL:
http://svn.apache.org/viewvc/openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/URIUtils.java?rev=947912&view=auto
==============================================================================
---
openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/URIUtils.java
(added)
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openjpa/trunk/openjpa-examples/openbooks/src/main/java/openbook/tools/util/URIUtils.java
Tue May 25 04:28:30 2010
@@ -0,0 +1,149 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+package openbook.tools.util;
+
+import java.io.File;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Stack;
+import java.util.regex.Pattern;
+
+public class URIUtils {
+ public static URI resolve(final URI baseURI, final String reference) {
+ return URIUtils.resolve(baseURI, URI.create(reference));
+ }
+
+ /**
+ * Resolves a URI reference against a base URI.
+ *
+ * @param baseURI the base URI
+ * @param reference the URI reference
+ * @return the resulting URI
+ */
+ public static URI resolve(final URI baseURI, URI reference) {
+ if (baseURI == null) {
+ throw new IllegalArgumentException("Base URI may nor be null");
+ }
+ if (reference == null) {
+ throw new IllegalArgumentException("Reference URI may nor be
null");
+ }
+ String s = reference.toString();
+ boolean emptyReference = s.length() == 0;
+ if (emptyReference) {
+ reference = URI.create("#");
+ }
+ URI resolved = baseURI.resolve(reference);
+ if (emptyReference) {
+ String resolvedString = resolved.toString();
+ resolved = URI.create(resolvedString.substring(0,
resolvedString.indexOf('#')));
+ }
+ return removeDotSegments(resolved);
+ }
+
+ /**
+ * Removes dot segments according to RFC 3986, section 5.2.4
+ *
+ * @param uri
+ * the original URI
+ * @return the URI without dot segments
+ */
+ private static URI removeDotSegments(URI uri) {
+ String path = uri.getPath();
+ if ((path == null) || (path.indexOf("/.") == -1)) {
+ // No dot segments to remove
+ return uri;
+ }
+ String[] inputSegments = path.split("/");
+ Stack<String> outputSegments = new Stack<String>();
+ for (int i = 0; i < inputSegments.length; i++) {
+ if ((inputSegments[i].length() == 0) ||
(".".equals(inputSegments[i]))) {
+ // Do nothing
+ } else if ("..".equals(inputSegments[i])) {
+ if (!outputSegments.isEmpty()) {
+ outputSegments.pop();
+ }
+ } else {
+ outputSegments.push(inputSegments[i]);
+ }
+ }
+ StringBuilder outputBuffer = new StringBuilder();
+ for (String outputSegment : outputSegments) {
+ outputBuffer.append('/').append(outputSegment);
+ }
+ try {
+ return new URI(uri.getScheme(), uri.getAuthority(),
outputBuffer.toString(), uri.getQuery(), uri
+ .getFragment());
+ } catch (URISyntaxException e) {
+ throw new IllegalArgumentException(e);
+ }
+ }
+
+ public static String getRelativePath(String targetPath, String basePath,
String pathSeparator) {
+
+ File f = new File(targetPath);
+ boolean isDir = f.isDirectory();
+ // We need the -1 argument to split to make sure we get a trailing
+ // "" token if the base ends in the path separator and is therefore
+ // a directory. We require directory paths to end in the path
+ // separator -- otherwise they are indistinguishable from files.
+ String[] base = basePath.split(Pattern.quote(pathSeparator), -1);
+ String[] target = targetPath.split(Pattern.quote(pathSeparator), 0);
+
+ // First get all the common elements. Store them as a string,
+ // and also count how many of them there are.
+ String common = "";
+ int commonIndex = 0;
+ for (int i = 0; i < target.length && i < base.length; i++) {
+ if (target[i].equals(base[i])) {
+ common += target[i] + pathSeparator;
+ commonIndex++;
+ }
+ else break;
+ }
+
+ if (commonIndex == 0) {
+ // not even a single common path element. This most
+ // likely indicates differing drive letters, like C: and D:.
+ // These paths cannot be relativized. Return the target path.
+ return targetPath;
+ }
+
+ String relative = "";
+ if (base.length == commonIndex) {
+ // Comment this out if you prefer that a relative path not start
with ./
+ relative = "." + pathSeparator;
+ } else {
+ int numDirsUp = base.length - commonIndex - (isDir ? 0 : 1); /*
only subtract 1 if it is a file. */
+ // The number of directories we have to backtrack is the length
of
+ // the base path MINUS the number of common path elements, minus
+ // one because the last element in the path isn't a directory.
+ for (int i = 1; i <= (numDirsUp); i++) {
+ relative += ".." + pathSeparator;
+ }
+ }
+ //if we are comparing directories
+ if (targetPath.length() > common.length()) {
+ //it's OK, it isn't a directory
+ relative += targetPath.substring(common.length());
+ }
+
+ return relative;
+ }
+
+}
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