1 /*
2 * Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
3 * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
4 * and other copyright owners as documented in the project's IP log.
5 *
6 * This program and the accompanying materials are made available
7 * under the terms of the Eclipse Distribution License v1.0 which
8 * accompanies this distribution, is reproduced below, and is
9 * available at http://www.eclipse.org/org/documents/edl-v10.php
10 *
11 * All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials provided
23 * with the distribution.
24 *
25 * - Neither the name of the Eclipse Foundation, Inc. nor the
26 * names of its contributors may be used to endorse or promote
27 * products derived from this software without specific prior
28 * written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
31 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
32 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
33 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
35 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
37 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
38 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
39 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
42 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 */
44
45 package org.eclipse.jgit.lib;
46
47 import java.io.IOException;
48 import java.io.PrintWriter;
49 import java.io.Writer;
50
51 /** A simple progress reporter printing on a stream. */
52 public class TextProgressMonitor extends BatchingProgressMonitor {
53 private final Writer out;
54
55 private boolean write;
56
57 /** Initialize a new progress monitor. */
58 public TextProgressMonitor() {
59 this(new PrintWriter(System.err));
60 }
61
62 /**
63 * Initialize a new progress monitor.
64 *
65 * @param out
66 * the stream to receive messages on.
67 */
68 public TextProgressMonitor(Writer out) {
69 this.out = out;
70 this.write = true;
71 }
72
73 @Override
74 protected void onUpdate(String taskName, int workCurr) {
75 StringBuilder s = new StringBuilder();
76 format(s, taskName, workCurr);
77 send(s);
78 }
79
80 @Override
81 protected void onEndTask(String taskName, int workCurr) {
82 StringBuilder s = new StringBuilder();
83 format(s, taskName, workCurr);
84 s.append("\n"); //$NON-NLS-1$
85 send(s);
86 }
87
88 private void format(StringBuilder s, String taskName, int workCurr) {
89 s.append("\r"); //$NON-NLS-1$
90 s.append(taskName);
91 s.append(": "); //$NON-NLS-1$
92 while (s.length() < 25)
93 s.append(' ');
94 s.append(workCurr);
95 }
96
97 @Override
98 protected void onUpdate(String taskName, int cmp, int totalWork, int pcnt) {
99 StringBuilder s = new StringBuilder();
100 format(s, taskName, cmp, totalWork, pcnt);
101 send(s);
102 }
103
104 @Override
105 protected void onEndTask(String taskName, int cmp, int totalWork, int pcnt) {
106 StringBuilder s = new StringBuilder();
107 format(s, taskName, cmp, totalWork, pcnt);
108 s.append("\n"); //$NON-NLS-1$
109 send(s);
110 }
111
112 private void format(StringBuilder s, String taskName, int cmp,
113 int totalWork, int pcnt) {
114 s.append("\r"); //$NON-NLS-1$
115 s.append(taskName);
116 s.append(": "); //$NON-NLS-1$
117 while (s.length() < 25)
118 s.append(' ');
119
120 String endStr = String.valueOf(totalWork);
121 String curStr = String.valueOf(cmp);
122 while (curStr.length() < endStr.length())
123 curStr = " " + curStr; //$NON-NLS-1$
124 if (pcnt < 100)
125 s.append(' ');
126 if (pcnt < 10)
127 s.append(' ');
128 s.append(pcnt);
129 s.append("% ("); //$NON-NLS-1$
130 s.append(curStr);
131 s.append("/"); //$NON-NLS-1$
132 s.append(endStr);
133 s.append(")"); //$NON-NLS-1$
134 }
135
136 private void send(StringBuilder s) {
137 if (write) {
138 try {
139 out.write(s.toString());
140 out.flush();
141 } catch (IOException err) {
142 write = false;
143 }
144 }
145 }
146 }