001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.geronimo.deployment.cli;
019
020 import java.io.BufferedReader;
021 import java.io.IOException;
022 import java.io.StringReader;
023
024 import jline.ConsoleReader;
025 import org.apache.geronimo.deployment.plugin.ConfigIDExtractor;
026
027 /**
028 * Various helpers for deployment.
029 *
030 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
031 */
032 public class DeployUtils extends ConfigIDExtractor {
033 /**
034 * Split up an output line so it indents at beginning and end (to fit in a
035 * typical terminal) and doesn't break in the middle of a word.
036 *
037 * @param source The unformatted String
038 * @param indent The number of characters to indent on the left
039 * @param endCol The maximum width of the entire line in characters,
040 * including indent (indent 10 with endCol 70 results
041 * in 60 "usable" characters).
042 */
043 public static String reformat(String source, int indent, int endCol) {
044 if (endCol - indent < 10) {
045 throw new IllegalArgumentException("This is ridiculous!");
046 }
047 StringBuffer buf = new StringBuffer((int) (source.length() * 1.1));
048 String prefix = indent == 0 ? "" : buildIndent(indent);
049 try {
050 BufferedReader in = new BufferedReader(new StringReader(source));
051 String line;
052 int pos;
053 while ((line = in.readLine()) != null) {
054 if (buf.length() > 0) {
055 buf.append('\n');
056 }
057 while (line.length() > 0) {
058 line = prefix + line;
059 if (line.length() > endCol) {
060 pos = line.lastIndexOf(' ', endCol);
061 if (pos < indent) {
062 pos = line.indexOf(' ', endCol);
063 if (pos < indent) {
064 pos = line.length();
065 }
066 }
067 buf.append(line.substring(0, pos)).append('\n');
068 if (pos < line.length() - 1) {
069 line = line.substring(pos + 1);
070 } else {
071 break;
072 }
073 } else {
074 buf.append(line).append("\n");
075 break;
076 }
077 }
078 }
079 } catch (IOException e) {
080 throw (AssertionError) new AssertionError("This should be impossible").initCause(e);
081 }
082 return buf.toString();
083 }
084
085 public static void println(String line, int indent, ConsoleReader consoleReader) throws IOException {
086 int endCol = consoleReader.getTermwidth();
087 int start = consoleReader.getCursorBuffer().cursor;
088 if (endCol - indent < 10) {
089 throw new IllegalArgumentException("This is ridiculous!");
090 }
091 // StringBuffer buf = new StringBuffer((int)(source.length()*1.1));
092 String prefix = indent == 0 ? "" : buildIndent(indent);
093 int pos;
094 while (line.length() > 0) {
095 if (start == 0) {
096 line = prefix + line;
097 }
098 if (line.length() > endCol - start) {
099 pos = line.lastIndexOf(' ', endCol - start);
100 if (pos < indent) {
101 pos = line.indexOf(' ', endCol - start);
102 if (pos < indent) {
103 pos = line.length();
104 }
105 }
106 consoleReader.printString(line.substring(0, pos));
107 consoleReader.printNewline();
108 if (pos < line.length() - 1) {
109 line = line.substring(pos + 1);
110 } else {
111 break;
112 }
113 start = 0;
114 } else {
115 consoleReader.printString(line);
116 consoleReader.printNewline();
117 break;
118 }
119 }
120 }
121
122 public static void printTo(String string, int col, ConsoleReader consoleReader) throws IOException {
123 consoleReader.printString(string);
124 for (int i = string.length(); i < col; i++) {
125 consoleReader.printString(" ");
126 }
127 }
128
129 private static String buildIndent(int indent) {
130 StringBuffer buf = new StringBuffer(indent);
131 for (int i = 0; i < indent; i++) {
132 buf.append(' ');
133 }
134 return buf.toString();
135 }
136
137
138 }