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Diffstat (limited to 'src/proguard/GPL.java')
| -rw-r--r-- | src/proguard/GPL.java | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/src/proguard/GPL.java b/src/proguard/GPL.java deleted file mode 100644 index 5c7ebc7..0000000 --- a/src/proguard/GPL.java +++ /dev/null @@ -1,196 +0,0 @@ -/* - * ProGuard -- shrinking, optimization, obfuscation, and preverification - * of Java bytecode. - * - * Copyright (c) 2002-2014 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 - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -package proguard; - -import java.io.*; -import java.util.*; - -/** - * This class checks and prints out information about the GPL. - * - * @author Eric Lafortune - */ -public class GPL -{ - /** - * Prints out a note about the GPL if ProGuard is linked against unknown - * code. - */ - public static void check() - { - ByteArrayOutputStream out = new ByteArrayOutputStream(); - new Exception().printStackTrace(new PrintStream(out)); - LineNumberReader reader = new LineNumberReader( - new InputStreamReader( - new ByteArrayInputStream(out.toByteArray()))); - - Set unknownPackageNames = unknownPackageNames(reader); - - if (unknownPackageNames.size() > 0) - { - String uniquePackageNames = uniquePackageNames(unknownPackageNames); - - System.out.println("ProGuard is released under the GNU General Public License. You therefore"); - System.out.println("must ensure that programs that link to it ("+uniquePackageNames+"...)"); - System.out.println("carry the GNU General Public License as well. Alternatively, you can"); - System.out.println("apply for an exception with the author of ProGuard."); - } - } - - - /** - * Returns a set of package names from the given stack trace. - */ - private static Set unknownPackageNames(LineNumberReader reader) - { - Set packageNames = new HashSet(); - - try - { - while (true) - { - String line = reader.readLine(); - if (line == null) - { - break; - } - - line = line.trim(); - if (line.startsWith("at ")) - { - line = line.substring(2).trim(); - line = trimSuffix(line, '('); - line = trimSuffix(line, '.'); - line = trimSuffix(line, '.'); - - if (line.length() > 0 && !isKnown(line)) - { - packageNames.add(line); - } - } - } - } - catch (IOException ex) - { - // We'll just stop looking for more names. - } - - return packageNames; - } - - - /** - * Returns a comma-separated list of package names from the set, excluding - * any subpackages of packages in the set. - */ - private static String uniquePackageNames(Set packageNames) - { - StringBuffer buffer = new StringBuffer(); - - Iterator iterator = packageNames.iterator(); - while (iterator.hasNext()) - { - String packageName = (String)iterator.next(); - if (!containsPrefix(packageNames, packageName)) - { - buffer.append(packageName).append(", "); - } - } - - return buffer.toString(); - } - - - /** - * Returns a given string without the suffix, as defined by the given - * separator. - */ - private static String trimSuffix(String string, char separator) - { - int index = string.lastIndexOf(separator); - return index < 0 ? "" : string.substring(0, index); - } - - - /** - * Returns whether the given set contains a prefix of the given name. - */ - private static boolean containsPrefix(Set set, String name) - { - int index = 0; - - while (!set.contains(name.substring(0, index))) - { - index = name.indexOf('.', index + 1); - if (index < 0) - { - return false; - } - } - - return true; - } - - - /** - * Returns whether the given package name has been granted an exception - * against the GPL linking clause, by the copyright holder of ProGuard. - * This method is not legally binding, but of course the actual license is. - * Please contact the copyright holder if you would like an exception for - * your code as well. - */ - private static boolean isKnown(String packageName) - { - return packageName.startsWith("java") || - packageName.startsWith("sun.reflect") || - packageName.startsWith("proguard") || - packageName.startsWith("org.apache.tools.ant") || - packageName.startsWith("org.apache.tools.maven") || - packageName.startsWith("org.gradle") || - packageName.startsWith("org.codehaus.groovy") || - packageName.startsWith("org.eclipse") || - packageName.startsWith("org.netbeans") || - packageName.startsWith("com.android") || - packageName.startsWith("com.sun.kvem") || - packageName.startsWith("net.certiv.proguarddt") || - packageName.startsWith("groovy") || - packageName.startsWith("scala") || - packageName.startsWith("sbt") || - packageName.startsWith("xsbt") || - packageName.startsWith("eclipseme"); - } - - - public static void main(String[] args) - { - LineNumberReader reader = new LineNumberReader( - new InputStreamReader(System.in)); - - Set unknownPackageNames = unknownPackageNames(reader); - - if (unknownPackageNames.size() > 0) - { - String uniquePackageNames = uniquePackageNames(unknownPackageNames); - - System.out.println(uniquePackageNames); - } - } -} |