diff options
Diffstat (limited to 'src/proguard/UpToDateChecker.java')
| -rw-r--r-- | src/proguard/UpToDateChecker.java | 219 |
1 files changed, 70 insertions, 149 deletions
diff --git a/src/proguard/UpToDateChecker.java b/src/proguard/UpToDateChecker.java index c743af9..9fa5d16 100644 --- a/src/proguard/UpToDateChecker.java +++ b/src/proguard/UpToDateChecker.java @@ -2,7 +2,7 @@ * ProGuard -- shrinking, optimization, obfuscation, and preverification * of Java bytecode. * - * Copyright (c) 2002-2011 Eric Lafortune (eric@graphics.cornell.edu) + * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -47,186 +47,107 @@ public class UpToDateChecker */ public boolean check() { - try - { - ModificationTimeChecker checker = new ModificationTimeChecker(); - - checker.updateInputModificationTime(configuration.lastModified); + long inputLastModified = configuration.lastModified; + long outputLastModified = Long.MAX_VALUE; - ClassPath programJars = configuration.programJars; - ClassPath libraryJars = configuration.libraryJars; + ClassPath programJars = configuration.programJars; + ClassPath libraryJars = configuration.libraryJars; - // Check the dates of the program jars, if any. - if (programJars != null) + // Check the dates of the program jars, if any. + if (programJars != null) + { + for (int index = 0; index < programJars.size(); index++) { - for (int index = 0; index < programJars.size(); index++) + // Break early, if possible. + if (inputLastModified >= outputLastModified) { - // Update the input and output modification times. - ClassPathEntry classPathEntry = programJars.get(index); - - checker.updateModificationTime(classPathEntry.getFile(), - classPathEntry.isOutput()); + break; } - } - // Check the dates of the library jars, if any. - if (libraryJars != null) - { - for (int index = 0; index < libraryJars.size(); index++) + // Update the input and output modification times. + ClassPathEntry classPathEntry = programJars.get(index); + if (classPathEntry.isOutput()) { - // Update the input modification time. - ClassPathEntry classPathEntry = libraryJars.get(index); - - checker.updateModificationTime(classPathEntry.getFile(), - false); + long lastModified = lastModified(classPathEntry.getFile(), true); + if (outputLastModified > lastModified) + { + outputLastModified = lastModified; + } + } + else + { + long lastModified = lastModified(classPathEntry.getFile(), false); + if (inputLastModified < lastModified) + { + inputLastModified = lastModified; + } } - } - - // Check the dates of the auxiliary input files. - checker.updateInputModificationTime(configuration.applyMapping); - checker.updateInputModificationTime(configuration.obfuscationDictionary); - checker.updateInputModificationTime(configuration.classObfuscationDictionary); - checker.updateInputModificationTime(configuration.packageObfuscationDictionary); - - // Check the dates of the auxiliary output files. - checker.updateOutputModificationTime(configuration.printSeeds); - checker.updateOutputModificationTime(configuration.printUsage); - checker.updateOutputModificationTime(configuration.printMapping); - checker.updateOutputModificationTime(configuration.printConfiguration); - checker.updateOutputModificationTime(configuration.dump); - } - catch (IllegalStateException e) - { - // The output is outdated. - return false; - } - - System.out.println("The output seems up to date"); - - return true; - } - - - /** - * This class maintains the modification times of input and output. - * The methods throw an IllegalStateException if the output appears - * outdated. - */ - private static class ModificationTimeChecker { - - private long inputModificationTime = Long.MIN_VALUE; - private long outputModificationTime = Long.MAX_VALUE; - - - /** - * Updates the input modification time based on the given file or - * directory (recursively). - */ - public void updateInputModificationTime(File file) - { - if (file != null) - { - updateModificationTime(file, false); - } - } - - - /** - * Updates the input modification time based on the given file or - * directory (recursively). - */ - public void updateOutputModificationTime(File file) - { - if (file != null && file.getName().length() > 0) - { - updateModificationTime(file, true); } } - - /** - * Updates the specified modification time based on the given file or - * directory (recursively). - */ - public void updateModificationTime(File file, boolean isOutput) + // Check the dates of the library jars, if any. + if (libraryJars != null) { - // Is it a directory? - if (file.isDirectory()) + for (int index = 0; index < libraryJars.size(); index++) { - // Ignore the directory's modification time; just recurse on - // its files. - File[] files = file.listFiles(); - - // Still, an empty output directory is probably a sign that it - // is not up to date. - if (files.length == 0 && isOutput) + // Break early, if possible. + if (inputLastModified >= outputLastModified) { - updateOutputModificationTime(Long.MIN_VALUE); + break; } - for (int index = 0; index < files.length; index++) + // Update the input modification time. + ClassPathEntry classPathEntry = libraryJars.get(index); + long lastModified = lastModified(classPathEntry.getFile(), false); + if (inputLastModified < lastModified) { - updateModificationTime(files[index], isOutput); + inputLastModified = lastModified; } } - else - { - // Update with the file's modification time. - updateModificationTime(file.lastModified(), isOutput); - } } - - /** - * Updates the specified modification time. - */ - public void updateModificationTime(long time, boolean isOutput) + boolean outputUpToDate = inputLastModified < outputLastModified; + if (outputUpToDate) { - if (isOutput) - { - updateOutputModificationTime(time); - } - else - { - updateInputModificationTime(time); - } + System.out.println("The output is up to date"); } + return outputUpToDate; + } - /** - * Updates the input modification time. - */ - public void updateInputModificationTime(long time) - { - if (inputModificationTime < time) - { - inputModificationTime = time; - checkModificationTimes(); - } - } + /** + * Returns the minimum or maximum modification time of the given file or + * of the files in the given directory (recursively). + */ + private long lastModified(File file, boolean minimum) + { + // Is it a directory? + if (file.isDirectory()) + { + // Ignore the directory's modification time; just recurse on its files. + File[] files = file.listFiles(); + // Still, an empty output directory is probably a sign that it is + // not up to date. + long lastModified = files.length != 0 && minimum ? + Long.MAX_VALUE : 0L; - /** - * Updates the output modification time. - */ - public void updateOutputModificationTime(long time) - { - if (outputModificationTime > time) + for (int index = 0; index < files.length; index++) { - outputModificationTime = time; - - checkModificationTimes(); + long fileLastModified = lastModified(files[index], minimum); + if ((lastModified < fileLastModified) ^ minimum) + { + lastModified = fileLastModified; + } } - } - - private void checkModificationTimes() + return lastModified; + } + else { - if (inputModificationTime > outputModificationTime) - { - throw new IllegalStateException("The output is outdated"); - } + // Return the file's modification time. + return file.lastModified(); } } } |