| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // Licensed 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 com.google.gerrit.server.patch; |
| |
| import org.eclipse.jgit.diff.RawText; |
| import org.eclipse.jgit.util.RawParseUtils; |
| import org.mozilla.universalchardet.UniversalDetector; |
| |
| import java.nio.charset.Charset; |
| |
| public class Text extends RawText { |
| public static final byte[] NO_BYTES = {}; |
| public static final Text EMPTY = new Text(NO_BYTES); |
| |
| public static String asString(byte[] content, String encoding) { |
| return new String(content, charset(content, encoding)); |
| } |
| |
| private static Charset charset(byte[] content, String encoding) { |
| if (encoding == null) { |
| UniversalDetector d = new UniversalDetector(null); |
| d.handleData(content, 0, content.length); |
| d.dataEnd(); |
| encoding = d.getDetectedCharset(); |
| } |
| if (encoding == null) { |
| encoding = "ISO-8859-1"; |
| } |
| return Charset.forName(encoding); |
| } |
| |
| private Charset charset; |
| |
| public Text(final byte[] r) { |
| super(r); |
| } |
| |
| public byte[] getContent() { |
| return content; |
| } |
| |
| public String getLine(final int i) { |
| return getLines(i, i + 1, true); |
| } |
| |
| public String getLines(final int begin, final int end, boolean dropLF) { |
| if (begin == end) { |
| return ""; |
| } |
| |
| final int s = getLineStart(begin); |
| int e = getLineEnd(end - 1); |
| if (dropLF && content[e - 1] == '\n') { |
| e--; |
| } |
| return decode(s, e); |
| } |
| |
| private String decode(final int s, int e) { |
| if (charset == null) { |
| charset = charset(content, null); |
| } |
| return RawParseUtils.decode(charset, content, s, e); |
| } |
| |
| private int getLineStart(final int i) { |
| return lines.get(i + 1); |
| } |
| |
| private int getLineEnd(final int i) { |
| return lines.get(i + 2); |
| } |
| } |