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Apache Ant Source Code Files
Apache Ant Source Code Files are inside the Apache Ant source package file like apache-ant-1.10.10-src.zip. Unzip the source package file and go to the "src/main" sub-directory, you will see source code files.
Here is the list of Java source code files of the Apache Ant 1.10.10 in \Users\fyicenter\apache-ant-1.10.10\src\main:
✍: FYIcenter.com
⏎ org/apache/tools/ant/util/FileUtils.java
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * https://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package org.apache.tools.ant.util; import java.io.File; import java.io.FilenameFilter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.Reader; import java.io.Writer; import java.net.HttpURLConnection; import java.net.JarURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.nio.channels.Channel; import java.nio.file.Files; import java.nio.file.NoSuchFileException; import java.nio.file.Path; import java.nio.file.Paths; import java.nio.file.StandardOpenOption; import java.nio.file.attribute.FileAttribute; import java.nio.file.attribute.PosixFileAttributeView; import java.nio.file.attribute.PosixFilePermission; import java.nio.file.attribute.PosixFilePermissions; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.EnumSet; import java.util.List; import java.util.Locale; import java.util.Optional; import java.util.Random; import java.util.Stack; import java.util.StringTokenizer; import java.util.Vector; import java.util.jar.JarFile; import java.util.stream.Collectors; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.MagicNames; import org.apache.tools.ant.PathTokenizer; import org.apache.tools.ant.Project; import org.apache.tools.ant.launch.Locator; import org.apache.tools.ant.taskdefs.condition.Os; import org.apache.tools.ant.types.FilterChain; import org.apache.tools.ant.types.FilterSetCollection; import org.apache.tools.ant.types.resources.FileResource; /** * This class also encapsulates methods which allow Files to be * referred to using abstract path names which are translated to native * system file paths at runtime as well as copying files or setting * their last modification time. * */ public class FileUtils { private static final int DELETE_RETRY_SLEEP_MILLIS = 10; private static final int EXPAND_SPACE = 50; private static final FileUtils PRIMARY_INSTANCE = new FileUtils(); //get some non-crypto-grade randomness from various places. private static Random rand = new Random(System.currentTimeMillis() + Runtime.getRuntime().freeMemory()); private static final boolean ON_NETWARE = Os.isFamily("netware"); private static final boolean ON_DOS = Os.isFamily("dos"); private static final boolean ON_WIN9X = Os.isFamily("win9x"); private static final boolean ON_WINDOWS = Os.isFamily("windows"); static final int BUF_SIZE = 8192; /** * The granularity of timestamps under FAT. */ public static final long FAT_FILE_TIMESTAMP_GRANULARITY = 2000; /** * The granularity of timestamps under Unix. */ public static final long UNIX_FILE_TIMESTAMP_GRANULARITY = 1000; /** * The granularity of timestamps under the NT File System. * NTFS has a granularity of 100 nanoseconds, which is less * than 1 millisecond, so we round this up to 1 millisecond. */ public static final long NTFS_FILE_TIMESTAMP_GRANULARITY = 1; private static final FileAttribute[] TMPFILE_ATTRIBUTES = new FileAttribute[] { PosixFilePermissions.asFileAttribute(EnumSet.of(PosixFilePermission.OWNER_READ, PosixFilePermission.OWNER_WRITE)) }; private static final FileAttribute[] TMPDIR_ATTRIBUTES = new FileAttribute[] { PosixFilePermissions.asFileAttribute(EnumSet.of(PosixFilePermission.OWNER_READ, PosixFilePermission.OWNER_WRITE, PosixFilePermission.OWNER_EXECUTE)) }; private static final FileAttribute[] NO_TMPFILE_ATTRIBUTES = new FileAttribute[0]; /** * A one item cache for fromUri. * fromUri is called for each element when parsing ant build * files. It is a costly operation. This just caches the result * of the last call. */ private Object cacheFromUriLock = new Object(); private String cacheFromUriRequest = null; private String cacheFromUriResponse = null; /** * Factory method. * * @return a new instance of FileUtils. * @deprecated since 1.7. * Use getFileUtils instead, * FileUtils do not have state. */ @Deprecated public static FileUtils newFileUtils() { return new FileUtils(); } /** * Method to retrieve The FileUtils, which is shared by all users of this * method. * @return an instance of FileUtils. * @since Ant 1.6.3 */ public static FileUtils getFileUtils() { return PRIMARY_INSTANCE; } /** * Empty constructor. */ protected FileUtils() { } /** * Get the URL for a file taking into account # characters. * * @param file the file whose URL representation is required. * @return The FileURL value. * @throws MalformedURLException if the URL representation cannot be * formed. */ public URL getFileURL(File file) throws MalformedURLException { return new URL(file.toURI().toASCIIString()); } /** * Convenience method to copy a file from a source to a destination. * No filtering is performed. * * @param sourceFile Name of file to copy from. * Must not be <code>null</code>. * @param destFile Name of file to copy to. * Must not be <code>null</code>. * * @throws IOException if the copying fails. */ public void copyFile(String sourceFile, String destFile) throws IOException { copyFile(new File(sourceFile), new File(destFile), null, false, false); } /** * Convenience method to copy a file from a source to a destination * specifying if token filtering must be used. * * @param sourceFile Name of file to copy from. * Must not be <code>null</code>. * @param destFile Name of file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * * @throws IOException if the copying fails. */ public void copyFile(String sourceFile, String destFile, FilterSetCollection filters) throws IOException { copyFile(new File(sourceFile), new File(destFile), filters, false, false); } /** * Convenience method to copy a file from a source to a destination specifying if token * filtering must be used and if source files may overwrite newer destination files. * * @param sourceFile Name of file to copy from. Must not be <code>null</code>. * @param destFile Name of file to copy to. Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param overwrite Whether or not the destination file should be overwritten if it already * exists. * * @throws IOException if the copying fails. */ public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite) throws IOException { copyFile(new File(sourceFile), new File(destFile), filters, overwrite, false); } /** * Convenience method to copy a file from a source to a destination * specifying if token * filtering must be used, if source files may overwrite newer destination * files and the last * modified time of <code>destFile</code> file should be made equal to * the last modified time * of <code>sourceFile</code>. * * @param sourceFile Name of file to copy from. Must not be <code>null</code>. * @param destFile Name of file to copy to. Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file * should be set to that of the source file. * * @throws IOException if the copying fails. */ public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified) throws IOException { copyFile(new File(sourceFile), new File(destFile), filters, overwrite, preserveLastModified); } /** * Convenience method to copy a file from a source to a destination specifying if token * filtering must be used, if source files may overwrite newer destination files and the last * modified time of <code>destFile</code> file should be made equal to the last modified time * of <code>sourceFile</code>. * * @param sourceFile Name of file to copy from. Must not be <code>null</code>. * @param destFile Name of file to copy to. Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param overwrite Whether or not the destination file should be overwritten if it already * exists. * @param preserveLastModified Whether or not the last modified time of the resulting file * should be set to that of the source file. * @param encoding the encoding used to read and write the files. * * @throws IOException if the copying fails. * * @since Ant 1.5 */ public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified, String encoding) throws IOException { copyFile(new File(sourceFile), new File(destFile), filters, overwrite, preserveLastModified, encoding); } // CheckStyle:ParameterNumberCheck OFF - bc /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used, if * filter chains must be used, if source files may overwrite * newer destination files and the last modified time of * <code>destFile</code> file should be made equal * to the last modified time of <code>sourceFile</code>. * * @param sourceFile Name of file to copy from. * Must not be <code>null</code>. * @param destFile Name of file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param filterChains filterChains to apply during the copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file should be set to that * of the source file. * @param encoding the encoding used to read and write the files. * @param project the project instance. * * @throws IOException if the copying fails. * * @since Ant 1.5 */ public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String encoding, Project project) throws IOException { copyFile(new File(sourceFile), new File(destFile), filters, filterChains, overwrite, preserveLastModified, encoding, project); } /** * Convenience method to copy a file from a source to a destination specifying if token * filtering must be used, if filter chains must be used, if source files may overwrite newer * destination files and the last modified time of <code>destFile</code> file should be made * equal to the last modified time of <code>sourceFile</code>. * * @param sourceFile Name of file to copy from. Must not be <code>null</code>. * @param destFile Name of file to copy to. Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param filterChains filterChains to apply during the copy. * @param overwrite Whether or not the destination file should be overwritten if it already * exists. * @param preserveLastModified Whether or not the last modified time of the resulting file * should be set to that of the source file. * @param inputEncoding the encoding used to read the files. * @param outputEncoding the encoding used to write the files. * @param project the project instance. * * @throws IOException if the copying fails. * * @since Ant 1.6 */ public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String inputEncoding, String outputEncoding, Project project) throws IOException { copyFile(new File(sourceFile), new File(destFile), filters, filterChains, overwrite, preserveLastModified, inputEncoding, outputEncoding, project); } /** * Convenience method to copy a file from a source to a destination. No filtering is performed. * * @param sourceFile the file to copy from. Must not be <code>null</code>. * @param destFile the file to copy to. Must not be <code>null</code>. * * @throws IOException if the copying fails. */ public void copyFile(File sourceFile, File destFile) throws IOException { copyFile(sourceFile, destFile, null, false, false); } /** * Convenience method to copy a file from a source to a destination * specifying if token filtering must be used. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * * @throws IOException if the copying fails. */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters) throws IOException { copyFile(sourceFile, destFile, filters, false, false); } /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used and if * source files may overwrite newer destination files. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * * @throws IOException if the copying fails. */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite) throws IOException { copyFile(sourceFile, destFile, filters, overwrite, false); } /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used, if * source files may overwrite newer destination files and the * last modified time of <code>destFile</code> file should be made equal * to the last modified time of <code>sourceFile</code>. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file should be set to that * of the source file. * * @throws IOException if the copying fails. */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified) throws IOException { copyFile(sourceFile, destFile, filters, overwrite, preserveLastModified, null); } /** * Convenience method to copy a file from a source to a destination specifying if token * filtering must be used, if source files may overwrite newer destination files, the last * modified time of <code>destFile</code> file should be made equal to the last modified time * of <code>sourceFile</code> and which character encoding to assume. * * @param sourceFile the file to copy from. Must not be <code>null</code>. * @param destFile the file to copy to. Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param overwrite Whether or not the destination file should be overwritten if it already * exists. * @param preserveLastModified Whether or not the last modified time of the resulting file * should be set to that of the source file. * @param encoding the encoding used to read and write the files. * * @throws IOException if the copying fails. * * @since Ant 1.5 */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified, String encoding) throws IOException { copyFile(sourceFile, destFile, filters, null, overwrite, preserveLastModified, encoding, null); } /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used, if * filter chains must be used, if source files may overwrite * newer destination files and the last modified time of * <code>destFile</code> file should be made equal * to the last modified time of <code>sourceFile</code>. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param filterChains filterChains to apply during the copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file should be set to that * of the source file. * @param encoding the encoding used to read and write the files. * @param project the project instance. * * @throws IOException if the copying fails. * * @since Ant 1.5 */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String encoding, Project project) throws IOException { copyFile(sourceFile, destFile, filters, filterChains, overwrite, preserveLastModified, encoding, encoding, project); } /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used, if * filter chains must be used, if source files may overwrite * newer destination files and the last modified time of * <code>destFile</code> file should be made equal * to the last modified time of <code>sourceFile</code>. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param filterChains filterChains to apply during the copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file should be set to that * of the source file. * @param inputEncoding the encoding used to read the files. * @param outputEncoding the encoding used to write the files. * @param project the project instance. * * * @throws IOException if the copying fails. * * @since Ant 1.6 */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String inputEncoding, String outputEncoding, Project project) throws IOException { copyFile(sourceFile, destFile, filters, filterChains, overwrite, preserveLastModified, false, inputEncoding, outputEncoding, project); } /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used, if * filter chains must be used, if source files may overwrite * newer destination files and the last modified time of * <code>destFile</code> file should be made equal * to the last modified time of <code>sourceFile</code>. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param filterChains filterChains to apply during the copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file should be set to that * of the source file. * @param append whether to append to the destination file. * @param inputEncoding the encoding used to read the files. * @param outputEncoding the encoding used to write the files. * @param project the project instance. * * * @throws IOException if the copying fails. * * @since Ant 1.8 */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, boolean append, String inputEncoding, String outputEncoding, Project project) throws IOException { copyFile(sourceFile, destFile, filters, filterChains, overwrite, preserveLastModified, append, inputEncoding, outputEncoding, project, /* force: */ false); } /** * Convenience method to copy a file from a source to a * destination specifying if token filtering must be used, if * filter chains must be used, if source files may overwrite * newer destination files and the last modified time of * <code>destFile</code> file should be made equal * to the last modified time of <code>sourceFile</code>. * * @param sourceFile the file to copy from. * Must not be <code>null</code>. * @param destFile the file to copy to. * Must not be <code>null</code>. * @param filters the collection of filters to apply to this copy. * @param filterChains filterChains to apply during the copy. * @param overwrite Whether or not the destination file should be * overwritten if it already exists. * @param preserveLastModified Whether or not the last modified time of * the resulting file should be set to that * of the source file. * @param append whether to append to the destination file. * @param inputEncoding the encoding used to read the files. * @param outputEncoding the encoding used to write the files. * @param project the project instance. * @param force whether to overwrite read-only destination files. * * @throws IOException if the copying fails. * * @since Ant 1.8.2 */ public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, boolean append, String inputEncoding, String outputEncoding, Project project, boolean force) throws IOException { ResourceUtils.copyResource(new FileResource(sourceFile), new FileResource(destFile), filters, filterChains, overwrite, preserveLastModified, append, inputEncoding, outputEncoding, project, force); } // CheckStyle:ParameterNumberCheck ON /** * Calls File.setLastModified(long time). Originally written to * to dynamically bind to that call on Java1.2+. * * @param file the file whose modified time is to be set * @param time the time to which the last modified time is to be set. * if this is -1, the current time is used. */ public void setFileLastModified(File file, long time) { ResourceUtils.setLastModified(new FileResource(file), time); } /** * Interpret the filename as a file relative to the given file * unless the filename already represents an absolute filename. * Differs from <code>new File(file, filename)</code> in that * the resulting File's path will always be a normalized, * absolute pathname. Also, if it is determined that * <code>filename</code> is context-relative, <code>file</code> * will be discarded and the reference will be resolved using * available context/state information about the filesystem. * * @param file the "reference" file for relative paths. This * instance must be an absolute file and must not contain * "./" or "../" sequences (same for \ instead * of /). If it is null, this call is equivalent to * <code>new java.io.File(filename).getAbsoluteFile()</code>. * * @param filename a file name. * * @return an absolute file. * @throws java.lang.NullPointerException if filename is null. */ public File resolveFile(File file, String filename) { if (!isAbsolutePath(filename)) { char sep = File.separatorChar; filename = filename.replace('/', sep).replace('\\', sep); if (isContextRelativePath(filename)) { file = null; // on cygwin, our current directory can be a UNC; // assume user.dir is absolute or all hell breaks loose... String udir = System.getProperty("user.dir"); if (filename.charAt(0) == sep && udir.charAt(0) == sep) { filename = dissect(udir)[0] + filename.substring(1); } } filename = new File(file, filename).getAbsolutePath(); } return normalize(filename); } /** * On DOS and NetWare, the evaluation of certain file * specifications is context-dependent. These are filenames * beginning with a single separator (relative to current root directory) * and filenames with a drive specification and no intervening separator * (relative to current directory of the specified root). * @param filename the filename to evaluate. * @return true if the filename is relative to system context. * @throws java.lang.NullPointerException if filename is null. * @since Ant 1.7 */ public static boolean isContextRelativePath(String filename) { if (!(ON_DOS || ON_NETWARE) || filename.isEmpty()) { return false; } char sep = File.separatorChar; filename = filename.replace('/', sep).replace('\\', sep); char c = filename.charAt(0); int len = filename.length(); return (c == sep && (len == 1 || filename.charAt(1) != sep)) || (Character.isLetter(c) && len > 1 && filename.charAt(1) == ':' && (len == 2 || filename.charAt(2) != sep)); } /** * Verifies that the specified filename represents an absolute path. * Differs from new java.io.File("filename").isAbsolute() in that a path * beginning with a double file separator--signifying a Windows UNC--must * at minimum match "\\a\b" to be considered an absolute path. * @param filename the filename to be checked. * @return true if the filename represents an absolute path. * @throws java.lang.NullPointerException if filename is null. * @since Ant 1.6.3 */ public static boolean isAbsolutePath(String filename) { if (filename.isEmpty()) { return false; } int len = filename.length(); char sep = File.separatorChar; filename = filename.replace('/', sep).replace('\\', sep); char c = filename.charAt(0); if (!ON_DOS && !ON_NETWARE) { return c == sep; } if (c == sep) { // CheckStyle:MagicNumber OFF if (!ON_DOS || len <= 4 || filename.charAt(1) != sep) { return false; } // CheckStyle:MagicNumber ON int nextsep = filename.indexOf(sep, 2); return nextsep > 2 && nextsep + 1 < len; } int colon = filename.indexOf(':'); return (Character.isLetter(c) && colon == 1 && filename.length() > 2 && filename.charAt(2) == sep) || (ON_NETWARE && colon > 0); } /** * Translate a path into its native (platform specific) format. * <p> * This method uses PathTokenizer to separate the input path * into its components. This handles DOS style paths in a relatively * sensible way. The file separators are then converted to their platform * specific versions. * * @param toProcess The path to be translated. * May be <code>null</code>. * * @return the native version of the specified path or * an empty string if the path is <code>null</code> or empty. * * @since ant 1.7 * @see PathTokenizer */ public static String translatePath(String toProcess) { if (toProcess == null || toProcess.isEmpty()) { return ""; } StringBuilder path = new StringBuilder(toProcess.length() + EXPAND_SPACE); PathTokenizer tokenizer = new PathTokenizer(toProcess); while (tokenizer.hasMoreTokens()) { String pathComponent = tokenizer.nextToken(); pathComponent = pathComponent.replace('/', File.separatorChar); pathComponent = pathComponent.replace('\\', File.separatorChar); if (path.length() > 0) { path.append(File.pathSeparatorChar); } path.append(pathComponent); } return path.toString(); } /** * "Normalize" the given absolute path. * * <p>This includes: * <ul> * <li>Uppercase the drive letter if there is one.</li> * <li>Remove redundant slashes after the drive spec.</li> * <li>Resolve all ./, .\, ../ and ..\ sequences.</li> * <li>DOS style paths that start with a drive letter will have * \ as the separator.</li> * </ul> * <p>Unlike {@link File#getCanonicalPath()} this method * specifically does not resolve symbolic links.</p> * * <p>If the path tries to go beyond the file system root (i.e. it * contains more ".." segments than can be travelled up) the * method will return the original path unchanged.</p> * * @param path the path to be normalized. * @return the normalized version of the path. * * @throws java.lang.NullPointerException if path is null. */ public File normalize(final String path) { Stack<String> s = new Stack<>(); String[] dissect = dissect(path); s.push(dissect[0]); StringTokenizer tok = new StringTokenizer(dissect[1], File.separator); while (tok.hasMoreTokens()) { String thisToken = tok.nextToken(); if (".".equals(thisToken)) { continue; } if ("..".equals(thisToken)) { if (s.size() < 2) { // Cannot resolve it, so skip it. return new File(path); } s.pop(); } else { // plain component s.push(thisToken); } } StringBuilder sb = new StringBuilder(); final int size = s.size(); for (int i = 0; i < size; i++) { if (i > 1) { // not before the filesystem root and not after it, since root // already contains one sb.append(File.separatorChar); } sb.append(s.elementAt(i)); } return new File(sb.toString()); } /** * Dissect the specified absolute path. * @param path the path to dissect. * @return String[] {root, remaining path}. * @throws java.lang.NullPointerException if path is null. * @since Ant 1.7 */ public String[] dissect(String path) { char sep = File.separatorChar; path = path.replace('/', sep).replace('\\', sep); // make sure we are dealing with an absolute path if (!isAbsolutePath(path)) { throw new BuildException(path + " is not an absolute path"); } String root; int colon = path.indexOf(':'); if (colon > 0 && (ON_DOS || ON_NETWARE)) { int next = colon + 1; root = path.substring(0, next); char[] ca = path.toCharArray(); root += sep; //remove the initial separator; the root has it. next = (ca[next] == sep) ? next + 1 : next; StringBuffer sbPath = new StringBuffer(); // Eliminate consecutive slashes after the drive spec: for (int i = next; i < ca.length; i++) { if (ca[i] != sep || ca[i - 1] != sep) { sbPath.append(ca[i]); } } path = sbPath.toString(); } else if (path.length() > 1 && path.charAt(1) == sep) { // UNC drive int nextsep = path.indexOf(sep, 2); nextsep = path.indexOf(sep, nextsep + 1); root = (nextsep > 2) ? path.substring(0, nextsep + 1) : path; path = path.substring(root.length()); } else { root = File.separator; path = path.substring(1); } return new String[] {root, path}; } /** * Returns a VMS String representation of a <code>File</code> object. * This is useful since the JVM by default internally converts VMS paths * to Unix style. * The returned String is always an absolute path. * * @param f The <code>File</code> to get the VMS path for. * @return The absolute VMS path to <code>f</code>. */ public String toVMSPath(File f) { // format: "DEVICE:[DIR.SUBDIR]FILE" String osPath; String path = normalize(f.getAbsolutePath()).getPath(); String name = f.getName(); boolean isAbsolute = path.charAt(0) == File.separatorChar; // treat directories specified using .DIR syntax as files // CheckStyle:MagicNumber OFF boolean isDirectory = f.isDirectory() && !name.regionMatches(true, name.length() - 4, ".DIR", 0, 4); // CheckStyle:MagicNumber ON String device = null; StringBuilder directory = null; String file = null; int index = 0; if (isAbsolute) { index = path.indexOf(File.separatorChar, 1); if (index == -1) { return path.substring(1) + ":[000000]"; } device = path.substring(1, index++); } if (isDirectory) { directory = new StringBuilder(path.substring(index).replace(File.separatorChar, '.')); } else { int dirEnd = path.lastIndexOf(File.separatorChar); if (dirEnd == -1 || dirEnd < index) { file = path.substring(index); } else { directory = new StringBuilder(path.substring(index, dirEnd) .replace(File.separatorChar, '.')); index = dirEnd + 1; if (path.length() > index) { file = path.substring(index); } } } if (!isAbsolute && directory != null) { directory.insert(0, '.'); } osPath = ((device != null) ? device + ":" : "") + ((directory != null) ? "[" + directory + "]" : "") + ((file != null) ? file : ""); return osPath; } /** * Create a File object for a temporary file in a given directory. Without * actually creating the file. * * <p> * The file denoted by the returned abstract pathname did not exist before * this method was invoked, any subsequent invocation of this method will * yield a different file name. * </p> * * <p>If the filesystem where the temporary file is created * supports POSIX permissions, the file will only be readable and * writable by the current user.</p> * * @param prefix file name prefix. * @param suffix * file extension; include the '.'. * @param parentDir * Directory to create the temporary file in; java.io.tmpdir used * if not specified. * * @deprecated since ant 1.7.1 use createTempFile(Project, String, String, File, * boolean, boolean) instead. * @return a File reference to the new, nonexistent temporary file. */ @Deprecated public File createTempFile(String prefix, String suffix, File parentDir) { return createTempFile(prefix, suffix, parentDir, false, false); } /** * Create a temporary file in a given directory. * * <p>The file denoted by the returned abstract pathname did not * exist before this method was invoked, any subsequent invocation * of this method will yield a different file name.</p> * * <p>If the filesystem where the temporary file is created * supports POSIX permissions, the file will only be readable and * writable by the current user.</p> * * @param prefix file name prefix. * @param suffix file extension; include the '.'. * @param parentDir Directory to create the temporary file in; * java.io.tmpdir used if not specified. * @param deleteOnExit whether to set the tempfile for deletion on * normal VM exit. * @param createFile true if the file must actually be created. If false * chances exist that a file with the same name is created in the time * between invoking this method and the moment the file is actually created. * If possible set to true. * * @return a File reference to the new temporary file. * @since Ant 1.7.1 * @deprecated since Ant 1.10.8 use createTempFile(Project, String, String, File, * boolean, boolean) instead. */ @Deprecated public File createTempFile(String prefix, String suffix, File parentDir, boolean deleteOnExit, boolean createFile) { return createTempFile(null, prefix, suffix, parentDir, deleteOnExit, createFile); } private static final String NULL_PLACEHOLDER = "null"; /** * Create a temporary file in a given directory. * * <p>The file denoted by the returned abstract pathname did not * exist before this method was invoked, any subsequent invocation * of this method will yield a different file name.</p> * * <p>If the filesystem where the temporary file is created * supports POSIX permissions, the file will only be readable and * writable by the current user.</p> * * @param project reference to the current Ant project. * @param prefix file name prefix. * @param suffix file extension; include the '.'. * @param parentDir Directory to create the temporary file in; * if not specified and {@code project} is not null then the value * of the property {@code ant.tmpdir} is used if set; * otherwise {@code java.io.tmpdir} is used. * @param deleteOnExit whether to set the tempfile for deletion on * normal VM exit. * @param createFile true if the file must actually be created. If false * chances exist that a file with the same name is created in the time * between invoking this method and the moment the file is actually created. * If possible set to true. * * @return a File reference to the new temporary file. * @since Ant 1.9.15 */ public File createTempFile(final Project project, String prefix, String suffix, final File parentDir, final boolean deleteOnExit, final boolean createFile) { File result; String p = null; if (parentDir != null) { p = parentDir.getPath(); } else if (project != null && project.getProperty(MagicNames.TMPDIR) != null) { p = project.getProperty(MagicNames.TMPDIR); } else if (project != null && deleteOnExit) { if (project.getProperty(MagicNames.AUTO_TMPDIR) != null) { p = project.getProperty(MagicNames.AUTO_TMPDIR); } else { final Path systemTempDirPath = new File(System.getProperty("java.io.tmpdir")).toPath(); final PosixFileAttributeView systemTempDirPosixAttributes = Files.getFileAttributeView(systemTempDirPath, PosixFileAttributeView.class); if (systemTempDirPosixAttributes != null) { // no reason to create an extra temp dir if we cannot set permissions try { final File projectTempDir = Files.createTempDirectory(systemTempDirPath, "ant", TMPDIR_ATTRIBUTES) .toFile(); projectTempDir.deleteOnExit(); p = projectTempDir.getAbsolutePath(); project.setProperty(MagicNames.AUTO_TMPDIR, p); } catch (IOException ex) { // silently fall back to system temp directory } } } } final String parent = p != null ? p : System.getProperty("java.io.tmpdir"); if (prefix == null) { prefix = NULL_PLACEHOLDER; } if (suffix == null) { suffix = NULL_PLACEHOLDER; } if (createFile) { try { final Path parentPath = new File(parent).toPath(); final PosixFileAttributeView parentPosixAttributes = Files.getFileAttributeView(parentPath, PosixFileAttributeView.class); result = Files.createTempFile(parentPath, prefix, suffix, parentPosixAttributes != null ? TMPFILE_ATTRIBUTES : NO_TMPFILE_ATTRIBUTES) .toFile(); } catch (IOException e) { throw new BuildException("Could not create tempfile in " + parent, e); } } else { DecimalFormat fmt = new DecimalFormat("#####"); synchronized (rand) { do { result = new File(parent, prefix + fmt.format(rand.nextInt(Integer.MAX_VALUE)) + suffix); } while (result.exists()); } } if (deleteOnExit) { result.deleteOnExit(); } return result; } /** * Create a File object for a temporary file in a given directory. Without * actually creating the file. * * <p> * The file denoted by the returned abstract pathname did not exist before * this method was invoked, any subsequent invocation of this method will * yield a different file name. * </p> * * <p>If the filesystem where the temporary file is created * supports POSIX permissions, the file will only be readable and * writable by the current user.</p> * * @param prefix file name prefix. * @param suffix * file extension; include the '.'. * @param parentDir * Directory to create the temporary file in; java.io.tmpdir used * if not specified. * @param deleteOnExit * whether to set the tempfile for deletion on normal VM exit. * * @deprecated since ant 1.7.1 use createTempFile(Project, String, String, File, * boolean, boolean) instead. * @return a File reference to the new, nonexistent temporary file. */ @Deprecated public File createTempFile(String prefix, String suffix, File parentDir, boolean deleteOnExit) { return createTempFile(prefix, suffix, parentDir, deleteOnExit, false); } /** * Compares the contents of two files. * * @param f1 the file whose content is to be compared. * @param f2 the other file whose content is to be compared. * * @return true if the content of the files is the same. * * @throws IOException if the files cannot be read. */ public boolean contentEquals(File f1, File f2) throws IOException { return contentEquals(f1, f2, false); } /** * Compares the contents of two files. * * @param f1 the file whose content is to be compared. * @param f2 the other file whose content is to be compared. * @param textfile true if the file is to be treated as a text file and * differences in kind of line break are to be ignored. * * @return true if the content of the files is the same. * * @throws IOException if the files cannot be read. * @since Ant 1.6.3 */ public boolean contentEquals(File f1, File f2, boolean textfile) throws IOException { return ResourceUtils.contentEquals(new FileResource(f1), new FileResource(f2), textfile); } /** * This was originally an emulation of {@link File#getParentFile} for JDK 1.1, but it is now * implemented using that method (Ant 1.6.3 onwards). * * @param f the file whose parent is required. * @return the given file's parent, or null if the file does not have a parent. * @since 1.10 * @deprecated since 1.7. Just use {@link File#getParentFile} directly. */ @Deprecated public File getParentFile(File f) { return f == null ? null : f.getParentFile(); } /** * Read from reader till EOF. * @param rdr the reader from which to read. * @return the contents read out of the given reader. * * @throws IOException if the contents could not be read out from the * reader. */ public static String readFully(Reader rdr) throws IOException { return readFully(rdr, BUF_SIZE); } /** * Read from reader till EOF. * * @param rdr the reader from which to read. * @param bufferSize the buffer size to use when reading. * * @return the contents read out of the given reader. * * @throws IOException if the contents could not be read out from the * reader. */ public static String readFully(Reader rdr, int bufferSize) throws IOException { if (bufferSize <= 0) { throw new IllegalArgumentException( "Buffer size must be greater than 0"); } final char[] buffer = new char[bufferSize]; int bufferLength = 0; StringBuilder textBuffer = new StringBuilder(); while (bufferLength != -1) { bufferLength = rdr.read(buffer); if (bufferLength > 0) { textBuffer.append(buffer, 0, bufferLength); } } return (textBuffer.length() == 0) ? null : textBuffer.toString(); } /** * Safe read fully - do not return a null for an empty reader. * @param reader the input to read from. * @return the string. * @throws IOException if unable to read from reader. * @since Ant 1.7.1 */ public static String safeReadFully(Reader reader) throws IOException { String ret = readFully(reader); return ret == null ? "" : ret; } /** * This was originally an emulation of File.createNewFile for JDK 1.1, * but it is now implemented using that method (Ant 1.6.3 onwards). * * <p>This method has historically <strong>not</strong> guaranteed that the * operation was atomic. In its current implementation it is. * * @param f the file to be created. * @return true if the file did not exist already. * @throws IOException on error. * @since Ant 1.5 */ public boolean createNewFile(File f) throws IOException { return f.createNewFile(); } /** * Create a new file, optionally creating parent directories. * * @param f the file to be created. * @param mkdirs <code>boolean</code> whether to create parent directories. * @return true if the file did not exist already. * @throws IOException on error. * @since Ant 1.6.3 */ public boolean createNewFile(File f, boolean mkdirs) throws IOException { File parent = f.getParentFile(); if (mkdirs && !(parent.exists())) { parent.mkdirs(); } return f.createNewFile(); } /** * Checks whether a given file is a symbolic link. * * <p>It doesn't really test for symbolic links but whether the * canonical and absolute paths of the file are identical--this * may lead to false positives on some platforms.</p> * * @param parent the parent directory of the file to test * @param name the name of the file to test. * * @return true if the file is a symbolic link. * @throws IOException on error. * @since Ant 1.5 * @deprecated use {@link Files#isSymbolicLink(Path)} instead */ @Deprecated public boolean isSymbolicLink(final File parent, final String name) throws IOException { if (parent == null) { return Files.isSymbolicLink(Paths.get(name)); } return Files.isSymbolicLink(Paths.get(parent.toPath().toString(), name)); } /** * Removes a leading path from a second path. * * <p>This method uses {@link #normalize} under the covers and * does not resolve symbolic links.</p> * * @param leading The leading path, must not be null, must be absolute. * @param path The path to remove from, must not be null, must be absolute. * * @return path's normalized absolute if it doesn't start with * leading; path's path with leading's path removed otherwise. * * @since Ant 1.5 */ public String removeLeadingPath(File leading, File path) { String l = normalize(leading.getAbsolutePath()).getAbsolutePath(); String p = normalize(path.getAbsolutePath()).getAbsolutePath(); if (l.equals(p)) { return ""; } // ensure that l ends with a / // so we never think /foo was a parent directory of /foobar if (!l.endsWith(File.separator)) { l += File.separator; } return (p.startsWith(l)) ? p.substring(l.length()) : p; } /** * Learn whether one path "leads" another. * * <p>This method uses {@link #normalize} under the covers and * does not resolve symbolic links.</p> * * <p>If either path tries to go beyond the file system root * (i.e. it contains more ".." segments than can be travelled up) * the method will return false.</p> * * @param leading The leading path, must not be null, must be absolute. * @param path The path to check, must not be null, must be absolute. * @return true if path starts with leading; false otherwise. * @since Ant 1.7 */ public boolean isLeadingPath(File leading, File path) { String l = normalize(leading.getAbsolutePath()).getAbsolutePath(); String p = normalize(path.getAbsolutePath()).getAbsolutePath(); if (l.equals(p)) { return true; } // ensure that l ends with a / // so we never think /foo was a parent directory of /foobar if (!l.endsWith(File.separator)) { l += File.separator; } // ensure "/foo/" is not considered a parent of "/foo/../../bar" String up = File.separator + ".." + File.separator; if (l.contains(up) || p.contains(up) || (p + File.separator).contains(up)) { return false; } return p.startsWith(l); } /** * Learn whether one path "leads" another. * * @param leading The leading path, must not be null, must be absolute. * @param path The path to check, must not be null, must be absolute. * @param resolveSymlinks whether symbolic links shall be resolved * prior to comparing the paths. * @return true if path starts with leading; false otherwise. * @since Ant 1.10.5 * @throws IOException if resolveSymlinks is true and invoking * getCanonicaPath on either argument throws an exception */ public boolean isLeadingPath(File leading, File path, boolean resolveSymlinks) throws IOException { if (!resolveSymlinks) { return isLeadingPath(leading, path); } final File l = leading.getCanonicalFile(); File p = path.getCanonicalFile(); do { if (l.equals(p)) { return true; } p = p.getParentFile(); } while (p != null); return false; } /** * Constructs a <code>file:</code> URI that represents the * external form of the given pathname. * * <p>Will be an absolute URI if the given path is absolute.</p> * * <p>This code encodes non ASCII characters too.</p> * * <p>The coding of the output is the same as what File.toURI().toASCIIString() produces</p> * * See <a href="https://www.w3.org/TR/xml11/#dt-sysid">dt-sysid</a> * which makes some mention of how * characters not supported by URI Reference syntax should be escaped. * * @param path the path in the local file system. * @return the URI version of the local path. * @since Ant 1.6 */ public String toURI(String path) { return new File(path).toURI().toASCIIString(); } /** * Constructs a file path from a <code>file:</code> URI. * * <p>Will be an absolute path if the given URI is absolute.</p> * * <p>Swallows '%' that are not followed by two characters, * doesn't deal with non-ASCII characters.</p> * * @param uri the URI designating a file in the local filesystem. * @return the local file system path for the file. * @since Ant 1.6 */ public String fromURI(String uri) { synchronized (cacheFromUriLock) { if (uri.equals(cacheFromUriRequest)) { return cacheFromUriResponse; } String path = Locator.fromURI(uri); String ret = isAbsolutePath(path) ? normalize(path).getAbsolutePath() : path; cacheFromUriRequest = uri; cacheFromUriResponse = ret; return ret; } } /** * Compares two filenames. * * <p>Unlike java.io.File#equals this method will try to compare * the absolute paths and "normalize" the filenames * before comparing them.</p> * * @param f1 the file whose name is to be compared. * @param f2 the other file whose name is to be compared. * * @return true if the file are for the same file. * * @since Ant 1.5.3 */ public boolean fileNameEquals(File f1, File f2) { return normalize(f1.getAbsolutePath()).getAbsolutePath().equals( normalize(f2.getAbsolutePath()).getAbsolutePath()); } /** * Are the two File instances pointing to the same object on the * file system? * * @param f1 File * @param f2 File * @return boolean * @throws IOException if file name canonicalization fails * @since Ant 1.8.2 */ public boolean areSame(File f1, File f2) throws IOException { if (f1 == null && f2 == null) { return true; } if (f1 == null || f2 == null) { return false; } File f1Normalized = normalize(f1.getAbsolutePath()); File f2Normalized = normalize(f2.getAbsolutePath()); return f1Normalized.equals(f2Normalized) || f1Normalized.getCanonicalFile().equals(f2Normalized .getCanonicalFile()); } /** * Renames a file, even if that involves crossing file system boundaries. * * <p>This will remove <code>to</code> (if it exists), ensure that * <code>to</code>'s parent directory exists and move * <code>from</code>, which involves deleting <code>from</code> as * well.</p> * * @param from the file to move. * @param to the new file name. * @throws IOException if anything bad happens during this * process. Note that <code>to</code> may have been deleted * already when this happens. * @since Ant 1.6 */ public void rename(File from, File to) throws IOException { // identical logic lives in Move.renameFile(): from = normalize(from.getAbsolutePath()).getCanonicalFile(); to = normalize(to.getAbsolutePath()); if (!from.exists()) { System.err.println("Cannot rename nonexistent file " + from); return; } if (from.getAbsolutePath().equals(to.getAbsolutePath())) { System.err.println("Rename of " + from + " to " + to + " is a no-op."); return; } if (to.exists() && !(areSame(from, to) || tryHardToDelete(to))) { throw new IOException("Failed to delete " + to + " while trying to rename " + from); } File parent = to.getParentFile(); if (parent != null && !parent.isDirectory() && !(parent.mkdirs() || parent.isDirectory())) { throw new IOException("Failed to create directory " + parent + " while trying to rename " + from); } if (!from.renameTo(to)) { copyFile(from, to); if (!tryHardToDelete(from)) { throw new IOException("Failed to delete " + from + " while trying to rename it."); } } } /** * Get the granularity of file timestamps. The choice is made based on OS, which is * incorrect--it should really be by filesystem. We do not have an easy way to probe for file * systems, however, so this heuristic gives us a decent default. * * @return the difference, in milliseconds, which two file timestamps must have in order for the * two files to be considered to have different timestamps. */ public long getFileTimestampGranularity() { if (ON_WIN9X) { return FAT_FILE_TIMESTAMP_GRANULARITY; } if (ON_WINDOWS) { return NTFS_FILE_TIMESTAMP_GRANULARITY; } if (ON_DOS) { return FAT_FILE_TIMESTAMP_GRANULARITY; } return UNIX_FILE_TIMESTAMP_GRANULARITY; } /** * test whether a file or directory exists, with an error in the * upper/lower case spelling of the name. * Using this method is only interesting on case insensitive file systems * (Windows). * <p> * It will return true only if 3 conditions are met: * </p> * <ul> * <li>operating system is case insensitive</li> * <li>file exists</li> * <li>actual name from directory reading is different from the * supplied argument</li> * </ul> * <p> * The purpose is to identify files or directories on case-insensitive * filesystems whose case is not what is expected. * </p> * Possibly to rename them afterwards to the desired upper/lowercase * combination. * * @param localFile file to test * @return true if the file exists and the case of the actual file * is not the case of the parameter * @since Ant 1.7.1 */ public boolean hasErrorInCase(File localFile) { localFile = normalize(localFile.getAbsolutePath()); if (!localFile.exists()) { return false; } final String localFileName = localFile.getName(); FilenameFilter ff = (dir, name) -> name.equalsIgnoreCase(localFileName) && (!name.equals(localFileName)); String[] names = localFile.getParentFile().list(ff); return names != null && names.length == 1; } /** * Returns true if the source is older than the dest. * If the dest file does not exist, then the test returns false; it is * implicitly not up do date. * @param source source file (should be the older). * @param dest dest file (should be the newer). * @param granularity an offset added to the source time. * @return true if the source is older than the dest after accounting * for granularity. * @since Ant 1.6.3 */ public boolean isUpToDate(File source, File dest, long granularity) { //do a check for the destination file existing if (!dest.exists()) { //if it does not, then the file is not up to date. return false; } long sourceTime = source.lastModified(); long destTime = dest.lastModified(); return isUpToDate(sourceTime, destTime, granularity); } /** * Returns true if the source is older than the dest. * @param source source file (should be the older). * @param dest dest file (should be the newer). * @return true if the source is older than the dest, taking the granularity into account. * @since Ant 1.6.3 */ public boolean isUpToDate(File source, File dest) { return isUpToDate(source, dest, getFileTimestampGranularity()); } /** * Compare two timestamps for being up to date using * the specified granularity. * * @param sourceTime timestamp of source file. * @param destTime timestamp of dest file. * @param granularity os/filesys granularity. * @return true if the dest file is considered up to date. */ public boolean isUpToDate(long sourceTime, long destTime, long granularity) { return destTime != -1 && destTime >= sourceTime + granularity; } /** * Compare two timestamps for being up to date using the * current granularity. * * @param sourceTime timestamp of source file. * @param destTime timestamp of dest file. * @return true if the dest file is considered up to date. */ public boolean isUpToDate(long sourceTime, long destTime) { return isUpToDate(sourceTime, destTime, getFileTimestampGranularity()); } /** * Close a Writer without throwing any exception if something went wrong. * Do not attempt to close it if the argument is null. * @param device output writer, can be null. */ public static void close(Writer device) { close((AutoCloseable) device); } /** * Close a Reader without throwing any exception if something went wrong. * Do not attempt to close it if the argument is null. * * @param device Reader, can be null. */ public static void close(Reader device) { close((AutoCloseable) device); } /** * Close a stream without throwing any exception if something went wrong. * Do not attempt to close it if the argument is null. * * @param device stream, can be null. */ public static void close(OutputStream device) { close((AutoCloseable) device); } /** * Close a stream without throwing any exception if something went wrong. * Do not attempt to close it if the argument is null. * * @param device stream, can be null. */ public static void close(InputStream device) { close((AutoCloseable) device); } /** * Close a Channel without throwing any exception if something went wrong. * Do not attempt to close it if the argument is null. * * @param device channel, can be null. * @since Ant 1.8.0 */ public static void close(Channel device) { close((AutoCloseable) device); } /** * Closes an URLConnection if its concrete implementation provides * a way to close it that Ant knows of. * * @param conn connection, can be null * @since Ant 1.8.0 */ public static void close(URLConnection conn) { if (conn != null) { try { if (conn instanceof JarURLConnection) { JarURLConnection juc = (JarURLConnection) conn; JarFile jf = juc.getJarFile(); jf.close(); } else if (conn instanceof HttpURLConnection) { ((HttpURLConnection) conn).disconnect(); } } catch (IOException exc) { //ignore } } } /** * Close an {@link AutoCloseable} without throwing any exception * if something went wrong. Do not attempt to close it if the * argument is null. * * @param ac AutoCloseable, can be null. * @since Ant 1.10.0 */ public static void close(AutoCloseable ac) { if (null != ac) { try { ac.close(); } catch (Exception e) { //ignore } } } /** * Delete the file with {@link File#delete()} if the argument is not null. * Do nothing on a null argument. * @param file file to delete. */ public static void delete(File file) { if (file != null) { file.delete(); } } /** * Accommodate Windows bug encountered in both Sun and IBM JDKs. * Others possible. If the delete does not work, call System.gc(), * wait a little and try again. * * @param f File * @return whether deletion was successful * @since Ant 1.8.0 */ public boolean tryHardToDelete(File f) { return tryHardToDelete(f, ON_WINDOWS); } /** * If delete does not work, call System.gc() if asked to, wait a * little and try again. * * @param f File * @param runGC boolean * @return whether deletion was successful * @since Ant 1.8.3 */ public boolean tryHardToDelete(File f, boolean runGC) { if (!f.delete()) { if (runGC) { System.gc(); } try { Thread.sleep(DELETE_RETRY_SLEEP_MILLIS); } catch (InterruptedException ex) { // Ignore Exception } return f.delete(); } return true; } /** * Calculates the relative path between two files. * <p> * Implementation note:<br>This function may throw an IOException if an I/O error occurs * because its use of the canonical pathname may require filesystem queries. * </p> * * @param fromFile the <code>File</code> to calculate the path from * @param toFile the <code>File</code> to calculate the path to * @return the relative path between the files * @throws Exception for undocumented reasons * @see File#getCanonicalPath() * * @since Ant 1.7 */ public static String getRelativePath(File fromFile, File toFile) throws Exception { //NOSONAR String fromPath = fromFile.getCanonicalPath(); String toPath = toFile.getCanonicalPath(); // build the path stack info to compare String[] fromPathStack = getPathStack(fromPath); String[] toPathStack = getPathStack(toPath); if (0 < toPathStack.length && 0 < fromPathStack.length) { if (!fromPathStack[0].equals(toPathStack[0])) { // not the same device (would be "" on Linux/Unix) return getPath(Arrays.asList(toPathStack)); } } else { // no comparison possible return getPath(Arrays.asList(toPathStack)); } // get index of parts which are equal int minLength = Math.min(fromPathStack.length, toPathStack.length); int same = 1; while (same < minLength && fromPathStack[same].equals(toPathStack[same])) { same++; } List<String> relativePathStack = new ArrayList<>(); // if "from" part is longer, fill it up with ".." // to reach path which is equal to both paths for (int i = same; i < fromPathStack.length; i++) { relativePathStack.add(".."); } // fill it up path with parts which were not equal relativePathStack.addAll(Arrays.asList(toPathStack).subList(same, toPathStack.length)); return getPath(relativePathStack); } /** * Gets all names of the path as an array of <code>String</code>s. * * @param path to get names from * @return <code>String</code>s, never <code>null</code> * * @since Ant 1.7 */ public static String[] getPathStack(String path) { String normalizedPath = path.replace(File.separatorChar, '/'); return normalizedPath.split("/"); } /** * Gets path from a <code>List</code> of <code>String</code>s. * * @param pathStack <code>List</code> of <code>String</code>s to be concatenated as a path. * @return <code>String</code>, never <code>null</code> * * @since Ant 1.7 */ public static String getPath(List<String> pathStack) { // can safely use '/' because Windows understands '/' as separator return getPath(pathStack, '/'); } /** * Gets path from a <code>List</code> of <code>String</code>s. * * @param pathStack <code>List</code> of <code>String</code>s to be concatenated as a path. * @param separatorChar <code>char</code> to be used as separator between names in path * @return <code>String</code>, never <code>null</code> * * @since Ant 1.7 */ public static String getPath(final List<String> pathStack, final char separatorChar) { return pathStack.stream().collect(Collectors.joining(Character.toString(separatorChar))); } /** * Get the default encoding. * This is done by opening an InputStreamReader on * a dummy InputStream and getting the encoding. * Could use System.getProperty("file.encoding"), but cannot * see where this is documented. * @return the default file encoding. */ public String getDefaultEncoding() { InputStreamReader is = new InputStreamReader( new InputStream() { //NOSONAR @Override public int read() { return -1; } }); try { return is.getEncoding(); } finally { close(is); } } /** * Opens a new OutputStream for the given Path. * @param path the path of the file * @param append whether to append to or a replace an existing file * @return a stream ready to write to the file * @throws IOException if stream creation fails * @since Ant 1.10.2 */ public static OutputStream newOutputStream(Path path, boolean append) throws IOException { if (append) { return Files.newOutputStream(path, StandardOpenOption.CREATE, StandardOpenOption.APPEND, StandardOpenOption.WRITE); } else { return Files.newOutputStream(path); } } /** * Tries to determine the case sensitivity of the filesystem corresponding to the * {@code path}. While doing so, this method might create a temporary file under * the directory represented by the {@code path}, if it's a directory or in the * parent directory of the {@code path}, if it's a file. * <p> * This method works on a best effort basis and will return an {@link Optional#empty()} * if it cannot determine the case sensitivity, either due to exception or for any other * reason. * </p> * @param path The path whose filesystem case sensitivity needs to be checked * @return Returns true if the filesystem corresponding to the passed {@code path} * is case sensitive. Else returns false. If the case sensitivity * cannot be determined for whatever reason, this method returns an * {@link Optional#empty()} * @throws IllegalArgumentException If the passed path is null * @since Ant 1.10.6 */ public static Optional<Boolean> isCaseSensitiveFileSystem(final Path path) { if (path == null) { throw new IllegalArgumentException("Path cannot be null"); } final String mixedCaseFileNamePrefix = "aNt"; Path mixedCaseTmpFile = null; boolean caseSensitive; try { if (Files.isRegularFile(path)) { mixedCaseTmpFile = Files.createTempFile(path.getParent(), mixedCaseFileNamePrefix, null); } else if (Files.isDirectory(path)) { mixedCaseTmpFile = Files.createTempFile(path, mixedCaseFileNamePrefix, null); } else { // we can only do our tricks to figure out whether the filesystem is // case sensitive, only if the path is a directory or a file. // In other cases (like the path being non-existent), we don't // have a way to determine that detail return Optional.empty(); } final Path lowerCasePath = Paths.get(mixedCaseTmpFile.toString().toLowerCase(Locale.US)); try { caseSensitive = !Files.isSameFile(mixedCaseTmpFile, lowerCasePath); } catch (NoSuchFileException nsfe) { // a NSFE implies that the "lowerCasePath" file wasn't considered to be present // even if the different cased file exists. That effectively means this is a // case sensitive filesystem caseSensitive = true; } } catch (IOException ioe) { System.err.println("Could not determine the case sensitivity of the " + "filesystem for path " + path + " due to " + ioe); return Optional.empty(); } finally { // delete the tmp file if (mixedCaseTmpFile != null) { FileUtils.delete(mixedCaseTmpFile.toFile()); } } return Optional.of(caseSensitive); } }
⏎ org/apache/tools/ant/util/FileUtils.java
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