1 | /*
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2 | * Copyright 2001-2002, 2004-2005 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.types.optional.depend;
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18 |
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19 | import java.io.File;
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20 | import java.util.Enumeration;
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21 | import java.util.Hashtable;
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22 | import java.util.Vector;
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23 | import org.apache.tools.ant.BuildException;
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24 | import org.apache.tools.ant.DirectoryScanner;
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25 | import org.apache.tools.ant.types.Path;
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26 | import org.apache.tools.ant.util.depend.DependencyAnalyzer;
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27 |
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28 |
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29 | /**
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30 | * DirectoryScanner for finding class dependencies.
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31 | */
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32 | public class DependScanner extends DirectoryScanner {
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33 | /**
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34 | * The name of the analyzer to use by default.
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35 | */
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36 | public static final String DEFAULT_ANALYZER_CLASS
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37 | = "org.apache.tools.ant.util.depend.bcel.FullAnalyzer";
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38 |
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39 | /**
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40 | * The root classes to drive the search for dependent classes.
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41 | */
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42 | private Vector rootClasses;
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43 |
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44 | /**
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45 | * The names of the classes to include in the fileset.
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46 | */
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47 | private Vector included;
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48 |
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49 | /**
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50 | * The parent scanner which gives the basic set of files. Only files which
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51 | * are in this set and which can be reached from a root class will end
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52 | * up being included in the result set.
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53 | */
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54 | private DirectoryScanner parentScanner;
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55 |
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56 | /**
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57 | * Create a DependScanner, using the given scanner to provide the basic
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58 | * set of files from which class files come.
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59 | *
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60 | * @param parentScanner the DirectoryScanner which returns the files from
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61 | * which class files must come.
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62 | */
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63 | public DependScanner(DirectoryScanner parentScanner) {
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64 | this.parentScanner = parentScanner;
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65 | }
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66 |
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67 | /**
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68 | * Sets the root classes to be used to drive the scan.
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69 | *
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70 | * @param rootClasses the rootClasses to be used for this scan.
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71 | */
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72 | public synchronized void setRootClasses(Vector rootClasses) {
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73 | this.rootClasses = rootClasses;
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74 | }
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75 |
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76 | /**
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77 | * Get the names of the class files on which baseClass depends.
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78 | *
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79 | * @return the names of the files.
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80 | */
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81 | public String[] getIncludedFiles() {
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82 | String[] files = new String[getIncludedFilesCount()];
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83 | for (int i = 0; i < files.length; i++) {
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84 | files[i] = (String) included.elementAt(i);
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85 | }
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86 | return files;
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87 | }
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88 |
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89 | /**
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90 | * @see DirectoryScanner#getIncludedFilesCount
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91 | */
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92 | public synchronized int getIncludedFilesCount() {
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93 | if (included == null) {
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94 | throw new IllegalStateException();
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95 | }
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96 | return included.size();
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97 | }
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98 |
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99 | /**
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100 | * Scans the base directory for files on which baseClass depends.
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101 | *
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102 | * @exception IllegalStateException when basedir was set incorrectly.
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103 | */
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104 | public synchronized void scan() throws IllegalStateException {
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105 | included = new Vector();
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106 | String analyzerClassName = DEFAULT_ANALYZER_CLASS;
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107 | DependencyAnalyzer analyzer = null;
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108 | try {
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109 | Class analyzerClass = Class.forName(analyzerClassName);
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110 | analyzer = (DependencyAnalyzer) analyzerClass.newInstance();
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111 | } catch (Exception e) {
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112 | throw new BuildException("Unable to load dependency analyzer: "
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113 | + analyzerClassName, e);
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114 | }
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115 | analyzer.addClassPath(new Path(null, basedir.getPath()));
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116 |
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117 | for (Enumeration e = rootClasses.elements(); e.hasMoreElements();) {
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118 | String rootClass = (String) e.nextElement();
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119 | analyzer.addRootClass(rootClass);
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120 | }
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121 | Enumeration e = analyzer.getClassDependencies();
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122 |
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123 | String[] parentFiles = parentScanner.getIncludedFiles();
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124 | Hashtable parentSet = new Hashtable();
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125 | for (int i = 0; i < parentFiles.length; ++i) {
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126 | parentSet.put(parentFiles[i], parentFiles[i]);
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127 | }
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128 | while (e.hasMoreElements()) {
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129 | String classname = (String) e.nextElement();
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130 | String filename = classname.replace('.', File.separatorChar);
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131 | filename = filename + ".class";
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132 | File depFile = new File(basedir, filename);
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133 | if (depFile.exists() && parentSet.containsKey(filename)) {
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134 | // This is included
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135 | included.addElement(filename);
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136 | }
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137 | }
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138 | }
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139 |
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140 | /**
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141 | * @see DirectoryScanner#addDefaultExcludes
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142 | */
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143 | public void addDefaultExcludes() {
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144 | }
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145 |
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146 | /**
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147 | * @see DirectoryScanner#getExcludedDirectories
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148 | */
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149 | public String[] getExcludedDirectories() {
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150 | return null;
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151 | }
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152 |
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153 | /**
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154 | * @see DirectoryScanner#getExcludedFiles
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155 | */
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156 | public String[] getExcludedFiles() {
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157 | return null;
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158 | }
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159 |
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160 | /**
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161 | * @see DirectoryScanner#getIncludedDirectories
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162 | */
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163 | public String[] getIncludedDirectories() {
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164 | return new String[0];
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165 | }
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166 |
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167 | /**
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168 | * @see DirectoryScanner#getIncludedDirsCount
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169 | */
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170 | public int getIncludedDirsCount() {
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171 | return 0;
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172 | }
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173 |
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174 | /**
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175 | * @see DirectoryScanner#getNotIncludedDirectories
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176 | */
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177 | public String[] getNotIncludedDirectories() {
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178 | return null;
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179 | }
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180 |
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181 | /**
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182 | * @see DirectoryScanner#getNotIncludedFiles
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183 | */
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184 | public String[] getNotIncludedFiles() {
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185 | return null;
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186 | }
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187 |
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188 | /**
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189 | * @see DirectoryScanner#setExcludes
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190 | */
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191 | public void setExcludes(String[] excludes) {
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192 | }
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193 |
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194 | /**
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195 | * @see DirectoryScanner#setIncludes
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196 | */
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197 | public void setIncludes(String[] includes) {
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198 | }
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199 |
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200 | /**
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201 | * @see DirectoryScanner#setCaseSensitive
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202 | */
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203 | public void setCaseSensitive(boolean isCaseSensitive) {
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204 | }
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205 | }
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