1 | /*
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2 | * Copyright 2004 The Apache Software Foundation
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | *
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16 | */
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17 | package org.apache.tools.ant.taskdefs.cvslib;
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18 |
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19 | import org.apache.tools.ant.taskdefs.AbstractCvsTask;
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20 |
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21 | import java.io.ByteArrayOutputStream;
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22 | import java.util.StringTokenizer;
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23 |
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24 | /**
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25 | * this task allows to find out the client and the server version of a
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26 | * CVS installation
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27 | *
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28 | * example usage :
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29 | * <cvsversion
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30 | * cvsRoot=":pserver:[email protected]:/home/cvspublic"
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31 | * passfile="c:/programme/cygwin/home/antoine/.cvspass"
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32 | * clientversionproperty="apacheclient"
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33 | * serverversionproperty="apacheserver" />
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34 | *
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35 | * the task can be used also in the API by calling its execute method,
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36 | * then calling getServerVersion and/or getClientVersion
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37 | *
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38 | * @ant.task category="scm"
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39 | * @since ant 1.6.1
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40 | */
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41 | public class CvsVersion extends AbstractCvsTask {
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42 | static final long VERSION_1_11_2 = 11102;
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43 | static final long MULTIPLY = 100;
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44 | private String clientVersion;
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45 | private String serverVersion;
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46 | private String clientVersionProperty;
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47 | private String serverVersionProperty;
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48 | /**
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49 | * get the CVS client version
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50 | * @return CVS client version
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51 | */
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52 | public String getClientVersion() {
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53 | return clientVersion;
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54 | }
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55 | /**
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56 | * get the CVS server version
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57 | * @return CVS server version
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58 | */
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59 | public String getServerVersion() {
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60 | return serverVersion;
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61 | }
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62 | /**
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63 | * set a property where to store the CVS client version
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64 | * @param clientVersionProperty property for CVS client version
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65 | */
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66 | public void setClientVersionProperty(String clientVersionProperty) {
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67 | this.clientVersionProperty = clientVersionProperty;
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68 | }
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69 |
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70 | /**
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71 | * set a property where to store the CVS server version
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72 | * @param serverVersionProperty property for CVS server version
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73 | */
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74 | public void setServerVersionProperty(String serverVersionProperty) {
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75 | this.serverVersionProperty = serverVersionProperty;
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76 | }
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77 | /**
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78 | * find out if the server version supports log with S option
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79 | * @return boolean indicating if the server version supports log with S option
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80 | */
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81 | public boolean supportsCvsLogWithSOption() {
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82 | if (serverVersion == null) {
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83 | return false;
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84 | }
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85 | StringTokenizer mySt = new StringTokenizer(serverVersion, ".");
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86 | long versionNumber;
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87 | long counter = MULTIPLY * MULTIPLY;
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88 | long version = 0;
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89 | while (mySt.hasMoreTokens()) {
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90 | String s = mySt.nextToken();
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91 | int i = 0;
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92 | for (i = 0; i < s.length(); i++) {
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93 | if (!Character.isDigit(s.charAt(i))) {
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94 | break;
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95 | }
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96 | }
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97 | String s2 = s.substring(0, i);
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98 | version = version + counter * Long.parseLong(s2);
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99 | if (counter == 1) {
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100 | break;
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101 | }
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102 | counter = counter / MULTIPLY;
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103 | }
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104 | return (version >= VERSION_1_11_2);
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105 | }
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106 | /**
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107 | * the execute method running CvsVersion
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108 | */
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109 | public void execute() {
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110 | ByteArrayOutputStream bos = new ByteArrayOutputStream();
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111 | this.setOutputStream(bos);
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112 | ByteArrayOutputStream berr = new ByteArrayOutputStream();
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113 | this.setErrorStream(berr);
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114 | setCommand("version");
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115 | super.execute();
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116 | String output = bos.toString();
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117 | StringTokenizer st = new StringTokenizer(output);
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118 | boolean client = false;
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119 | boolean server = false;
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120 | boolean cvs = false;
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121 | while (st.hasMoreTokens()) {
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122 | String currentToken = st.nextToken();
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123 | if (currentToken.equals("Client:")) {
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124 | client = true;
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125 | } else if (currentToken.equals("Server:")) {
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126 | server = true;
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127 | } else if (currentToken.equals("(CVS)")) {
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128 | cvs = true;
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129 | }
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130 | if (client && cvs) {
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131 | if (st.hasMoreTokens()) {
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132 | clientVersion = st.nextToken();
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133 | }
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134 | client = false;
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135 | cvs = false;
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136 | } else if (server && cvs) {
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137 | if (st.hasMoreTokens()) {
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138 | serverVersion = st.nextToken();
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139 | }
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140 | server = false;
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141 | cvs = false;
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142 | }
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143 |
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144 | }
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145 | if (clientVersionProperty != null) {
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146 | getProject().setNewProperty(clientVersionProperty, clientVersion);
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147 | }
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148 | if (serverVersionProperty != null) {
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149 | getProject().setNewProperty(serverVersionProperty, serverVersion);
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150 | }
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151 | }
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152 | }
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