From 13a3f5bc3e2d25fc76850f86070dc34efe60d77a Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Fri, 07 Sep 2012 22:06:15 -0400
Subject: [PATCH] Draft project pages, project metadata, and RSS feeds
---
src/com/gitblit/utils/StringUtils.java | 78 ++++++++++++++++++++++++++++++++++++++-
1 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/src/com/gitblit/utils/StringUtils.java b/src/com/gitblit/utils/StringUtils.java
index 2c35724..08fd497 100644
--- a/src/com/gitblit/utils/StringUtils.java
+++ b/src/com/gitblit/utils/StringUtils.java
@@ -16,13 +16,25 @@
package com.gitblit.utils;
import java.io.UnsupportedEncodingException;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.CharacterCodingException;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.IllegalCharsetNameException;
+import java.nio.charset.UnsupportedCharsetException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
+import java.util.LinkedHashSet;
import java.util.List;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
/**
@@ -66,7 +78,7 @@
* @return plain text escaped for html
*/
public static String escapeForHtml(String inStr, boolean changeSpace) {
- StringBuffer retStr = new StringBuffer();
+ StringBuilder retStr = new StringBuilder();
int i = 0;
while (i < inStr.length()) {
if (inStr.charAt(i) == '&') {
@@ -107,7 +119,7 @@
* @return properly escaped url
*/
public static String encodeURL(String inStr) {
- StringBuffer retStr = new StringBuffer();
+ StringBuilder retStr = new StringBuilder();
int i = 0;
while (i < inStr.length()) {
if (inStr.charAt(i) == '/') {
@@ -550,4 +562,66 @@
// remember to append any characters to the right of a match
return sb.toString();
}
+
+ /**
+ * Decodes a string by trying several charsets until one does not throw a
+ * coding exception. Last resort is to interpret as UTF-8 with illegal
+ * character substitution.
+ *
+ * @param content
+ * @param charsets optional
+ * @return a string
+ */
+ public static String decodeString(byte [] content, String... charsets) {
+ Set<String> sets = new LinkedHashSet<String>();
+ if (!ArrayUtils.isEmpty(charsets)) {
+ sets.addAll(Arrays.asList(charsets));
+ }
+ String value = null;
+ sets.addAll(Arrays.asList("UTF-8", "ISO-8859-1", Charset.defaultCharset().name()));
+ for (String charset : sets) {
+ try {
+ Charset cs = Charset.forName(charset);
+ CharsetDecoder decoder = cs.newDecoder();
+ CharBuffer buffer = decoder.decode(ByteBuffer.wrap(content));
+ value = buffer.toString();
+ break;
+ } catch (CharacterCodingException e) {
+ // ignore and advance to the next charset
+ } catch (IllegalCharsetNameException e) {
+ // ignore illegal charset names
+ } catch (UnsupportedCharsetException e) {
+ // ignore unsupported charsets
+ }
+ }
+ if (value.startsWith("\uFEFF")) {
+ // strip UTF-8 BOM
+ return value.substring(1);
+ }
+ return value;
+ }
+
+ /**
+ * Attempt to extract a repository name from a given url using regular
+ * expressions. If no match is made, then return whatever trails after
+ * the final / character.
+ *
+ * @param regexUrls
+ * @return a repository path
+ */
+ public static String extractRepositoryPath(String url, String... urlpatterns) {
+ for (String urlPattern : urlpatterns) {
+ Pattern p = Pattern.compile(urlPattern);
+ Matcher m = p.matcher(url);
+ while (m.find()) {
+ String repositoryPath = m.group(1);
+ return repositoryPath;
+ }
+ }
+ // last resort
+ if (url.lastIndexOf('/') > -1) {
+ return url.substring(url.lastIndexOf('/') + 1);
+ }
+ return url;
+ }
}
\ No newline at end of file
--
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