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package org.apache.maven.plugin.clean; |
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import java.io.File; |
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import java.io.IOException; |
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import org.apache.maven.plugin.logging.Log; |
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import org.codehaus.plexus.util.Os; |
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class Cleaner |
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{ |
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36 | 1 | private static final boolean ON_WINDOWS = Os.isFamily( Os.FAMILY_WINDOWS ); |
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private final Logger logDebug; |
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private final Logger logInfo; |
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private final Logger logVerbose; |
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private final Logger logWarn; |
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public Cleaner( final Log log, boolean verbose ) |
53 | 8 | { |
54 | 8 | logDebug = ( log == null || !log.isDebugEnabled() ) ? null : new Logger() |
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{ |
56 | 0 | public void log( CharSequence message ) |
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{ |
58 | 0 | log.debug( message ); |
59 | 0 | } |
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}; |
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62 | 8 | logInfo = ( log == null || !log.isInfoEnabled() ) ? null : new Logger() |
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{ |
64 | 8 | public void log( CharSequence message ) |
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{ |
66 | 29 | log.info( message ); |
67 | 29 | } |
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}; |
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70 | 8 | logWarn = ( log == null || !log.isWarnEnabled() ) ? null : new Logger() |
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{ |
72 | 8 | public void log( CharSequence message ) |
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{ |
74 | 2 | log.warn( message ); |
75 | 2 | } |
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}; |
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78 | 8 | logVerbose = verbose ? logInfo : logDebug; |
79 | 8 | } |
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public void delete( File basedir, Selector selector, boolean followSymlinks, boolean failOnError ) |
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throws IOException |
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{ |
95 | 12 | if ( !basedir.isDirectory() ) |
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{ |
97 | 4 | if ( !basedir.exists() ) |
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{ |
99 | 3 | if ( logDebug != null ) |
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{ |
101 | 0 | logDebug.log( "Skipping non-existing directory " + basedir ); |
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} |
103 | 3 | return; |
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} |
105 | 1 | throw new IOException( "Invalid base directory " + basedir ); |
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} |
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108 | 8 | if ( logInfo != null ) |
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{ |
110 | 8 | logInfo.log( "Deleting " + basedir + ( selector != null ? " (" + selector + ")" : "" ) ); |
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} |
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113 | 8 | File file = followSymlinks ? basedir : basedir.getCanonicalFile(); |
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115 | 8 | delete( file, "", selector, followSymlinks, failOnError ); |
116 | 7 | } |
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private Result delete( File file, String pathname, Selector selector, boolean followSymlinks, boolean failOnError ) |
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throws IOException |
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{ |
135 | 28 | Result result = new Result(); |
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137 | 28 | boolean isDirectory = file.isDirectory(); |
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139 | 28 | if ( isDirectory ) |
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{ |
141 | 14 | if ( selector == null || selector.couldHoldSelected( pathname ) ) |
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{ |
143 | 14 | File canonical = followSymlinks ? file : file.getCanonicalFile(); |
144 | 14 | if ( followSymlinks || file.equals( canonical ) ) |
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{ |
146 | 14 | String[] filenames = canonical.list(); |
147 | 14 | if ( filenames != null ) |
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{ |
149 | 14 | String prefix = ( pathname.length() > 0 ) ? pathname + File.separatorChar : ""; |
150 | 33 | for ( int i = filenames.length - 1; i >= 0; i-- ) |
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{ |
152 | 20 | String filename = filenames[i]; |
153 | 20 | File child = new File( canonical, filename ); |
154 | 20 | result.update( delete( child, prefix + filename, selector, followSymlinks, failOnError ) ); |
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} |
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} |
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} |
158 | 0 | else if ( logDebug != null ) |
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{ |
160 | 0 | logDebug.log( "Not recursing into symlink " + file ); |
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} |
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} |
163 | 0 | else if ( logDebug != null ) |
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{ |
165 | 0 | logDebug.log( "Not recursing into directory without included files " + file ); |
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} |
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} |
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169 | 27 | if ( !result.excluded && ( selector == null || selector.isSelected( pathname ) ) ) |
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{ |
171 | 21 | if ( logVerbose != null ) |
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{ |
173 | 21 | if ( isDirectory ) |
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{ |
175 | 9 | logVerbose.log( "Deleting directory " + file ); |
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} |
177 | 12 | else if ( file.exists() ) |
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{ |
179 | 12 | logVerbose.log( "Deleting file " + file ); |
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} |
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else |
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{ |
183 | 0 | logVerbose.log( "Deleting dangling symlink " + file ); |
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} |
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} |
186 | 21 | result.failures += delete( file, failOnError ); |
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} |
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else |
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{ |
190 | 6 | result.excluded = true; |
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} |
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193 | 26 | return result; |
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} |
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private int delete( File file, boolean failOnError ) |
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throws IOException |
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{ |
208 | 21 | if ( !file.delete() ) |
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{ |
210 | 3 | if ( ON_WINDOWS ) |
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{ |
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213 | 3 | System.gc(); |
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} |
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try |
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{ |
217 | 3 | Thread.sleep( 10 ); |
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} |
219 | 0 | catch ( InterruptedException e ) |
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{ |
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222 | 3 | } |
223 | 3 | if ( !file.delete() ) |
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{ |
225 | 3 | if ( failOnError ) |
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{ |
227 | 1 | throw new IOException( "Failed to delete " + file ); |
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} |
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else |
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{ |
231 | 2 | if ( logWarn != null ) |
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{ |
233 | 2 | logWarn.log( "Failed to delete " + file ); |
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} |
235 | 2 | return 1; |
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} |
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} |
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} |
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240 | 18 | return 0; |
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} |
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243 | 56 | private static class Result |
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{ |
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public int failures; |
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public boolean excluded; |
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public void update( Result result ) |
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{ |
252 | 19 | failures += result.failures; |
253 | 19 | excluded |= result.excluded; |
254 | 19 | } |
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} |
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private static interface Logger |
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{ |
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public void log( CharSequence message ); |
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} |
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} |