diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineTokenizer.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineTokenizer.java | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineTokenizer.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineTokenizer.java new file mode 100644 index 00000000..778606dd --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineTokenizer.java @@ -0,0 +1,115 @@ +/* + * 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 org.apache.tools.ant.util; + +import java.io.IOException; +import java.io.Reader; + +import org.apache.tools.ant.ProjectComponent; + +/** + * class to tokenize the input as lines separated + * by \r (mac style), \r\n (dos/windows style) or \n (unix style) + * @since Ant 1.6 + */ +public class LineTokenizer extends ProjectComponent + implements Tokenizer { + private static final int NOT_A_CHAR = -2; + private String lineEnd = ""; + private int pushed = NOT_A_CHAR; + private boolean includeDelims = false; + + /** + * attribute includedelims - whether to include + * the line ending with the line, or to return + * it in the posttoken + * default false + * @param includeDelims if true include /r and /n in the line + */ + + public void setIncludeDelims(boolean includeDelims) { + this.includeDelims = includeDelims; + } + + /** + * get the next line from the input + * + * @param in the input reader + * @return the line excluding /r or /n, unless includedelims is set + * @exception IOException if an error occurs reading + */ + public String getToken(Reader in) throws IOException { + int ch = -1; + if (pushed != NOT_A_CHAR) { + ch = pushed; + pushed = NOT_A_CHAR; + } else { + ch = in.read(); + } + if (ch == -1) { + return null; + } + + lineEnd = ""; + StringBuffer line = new StringBuffer(); + + int state = 0; + while (ch != -1) { + if (state == 0) { + if (ch == '\r') { + state = 1; + } else if (ch == '\n') { + lineEnd = "\n"; + break; + } else { + line.append((char) ch); + } + } else { + state = 0; + if (ch == '\n') { + lineEnd = "\r\n"; + } else { + pushed = ch; + lineEnd = "\r"; + } + break; + } + ch = in.read(); + } + if (ch == -1 && state == 1) { + lineEnd = "\r"; + } + + if (includeDelims) { + line.append(lineEnd); + } + return line.toString(); + } + + /** + * @return the line ending character(s) for the current line + */ + public String getPostToken() { + if (includeDelims) { + return ""; + } + return lineEnd; + } + +} + |