project.java

java ant的源码！非常值得看的源码

     *                  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.
     *
     * @deprecated since 1.7
     *             Use FileUtils.translatePath instead.
     *
     * @see PathTokenizer
     */
    public static String translatePath(String toProcess) {
        return FileUtils.translatePath(toProcess);
    }

    /**
     * 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>.
     *
     * @exception IOException if the copying fails.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(String sourceFile, String destFile)
          throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile);
    }

    /**
     * Convenience method to copy a file from a source to a destination
     * specifying if token filtering should 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 filtering Whether or not token filtering should be used during
     *                  the copy.
     *
     * @exception IOException if the copying fails.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(String sourceFile, String destFile, boolean filtering)
        throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile,
            filtering ? globalFilters : null);
    }

    /**
     * Convenience method to copy a file from a source to a
     * destination specifying if token filtering should 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 filtering Whether or not token filtering should be used during
     *                  the copy.
     * @param overwrite Whether or not the destination file should be
     *                  overwritten if it already exists.
     *
     * @exception IOException if the copying fails.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(String sourceFile, String destFile, boolean filtering,
                         boolean overwrite) throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile,
            filtering ? globalFilters : null, overwrite);
    }

    /**
     * Convenience method to copy a file from a source to a
     * destination specifying if token filtering should be used, if
     * source files may overwrite newer destination files, and if the
     * last modified time of the resulting file should be set to
     * that of the source file.
     *
     * @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 filtering Whether or not token filtering should be used 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.
     *
     * @exception IOException if the copying fails.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(String sourceFile, String destFile, boolean filtering,
                         boolean overwrite, boolean preserveLastModified)
        throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile,
            filtering ? globalFilters : null, overwrite, preserveLastModified);
    }

    /**
     * Convenience method to copy a file from a source to a destination.
     * No filtering is performed.
     *
     * @param sourceFile File to copy from.
     *                   Must not be <code>null</code>.
     * @param destFile File to copy to.
     *                 Must not be <code>null</code>.
     *
     * @exception IOException if the copying fails.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(File sourceFile, File destFile) throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile);
    }

    /**
     * Convenience method to copy a file from a source to a destination
     * specifying if token filtering should be used.
     *
     * @param sourceFile File to copy from.
     *                   Must not be <code>null</code>.
     * @param destFile File to copy to.
     *                 Must not be <code>null</code>.
     * @param filtering Whether or not token filtering should be used during
     *                  the copy.
     *
     * @exception IOException if the copying fails.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(File sourceFile, File destFile, boolean filtering)
        throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile,
            filtering ? globalFilters : null);
    }

    /**
     * Convenience method to copy a file from a source to a
     * destination specifying if token filtering should be used and if
     * source files may overwrite newer destination files.
     *
     * @param sourceFile File to copy from.
     *                   Must not be <code>null</code>.
     * @param destFile File to copy to.
     *                 Must not be <code>null</code>.
     * @param filtering Whether or not token filtering should be used during
     *                  the copy.
     * @param overwrite Whether or not the destination file should be
     *                  overwritten if it already exists.
     *
     * @exception IOException if the file cannot be copied.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(File sourceFile, File destFile, boolean filtering,
                         boolean overwrite) throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile,
            filtering ? globalFilters : null, overwrite);
    }

    /**
     * Convenience method to copy a file from a source to a
     * destination specifying if token filtering should be used, if
     * source files may overwrite newer destination files, and if the
     * last modified time of the resulting file should be set to
     * that of the source file.
     *
     * @param sourceFile File to copy from.
     *                   Must not be <code>null</code>.
     * @param destFile File to copy to.
     *                 Must not be <code>null</code>.
     * @param filtering Whether or not token filtering should be used 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.
     *
     * @exception IOException if the file cannot be copied.
     *
     * @deprecated since 1.4.x
     */
    public void copyFile(File sourceFile, File destFile, boolean filtering,
                         boolean overwrite, boolean preserveLastModified)
        throws IOException {
        FILE_UTILS.copyFile(sourceFile, destFile,
            filtering ? globalFilters : null, overwrite, preserveLastModified);
    }

    /**
     * Call File.setLastModified(long time) on Java above 1.1, and logs
     * a warning on Java 1.1.
     *
     * @param file The file to set the last modified time on.
     *             Must not be <code>null</code>.
     *
     * @param time the required modification time.
     *
     * @deprecated since 1.4.x
     *
     * @exception BuildException if the last modified time cannot be set
     *                           despite running on a platform with a version
     *                           above 1.1.
     */
    public void setFileLastModified(File file, long time)
         throws BuildException {
        FILE_UTILS.setFileLastModified(file, time);
        log("Setting modification time for " + file, MSG_VERBOSE);
    }

    /**
     * Return the boolean equivalent of a string, which is considered
     * <code>true</code> if either <code>"on"</code>, <code>"true"</code>,
     * or <code>"yes"</code> is found, ignoring case.
     *
     * @param s The string to convert to a boolean value.
     *
     * @return <code>true</code> if the given string is <code>"on"</code>,
     *         <code>"true"</code> or <code>"yes"</code>, or
     *         <code>false</code> otherwise.
     */
    public static boolean toBoolean(String s) {
        return ("on".equalsIgnoreCase(s)
                || "true".equalsIgnoreCase(s)
                || "yes".equalsIgnoreCase(s));
    }

    /**
     * Topologically sort a set of targets.  Equivalent to calling
     * <code>topoSort(new String[] {root}, targets, true)</code>.
     *
     * @param root The name of the root target. The sort is created in such
     *             a way that the sequence of Targets up to the root
     *             target is the minimum possible such sequence.
     *             Must not be <code>null</code>.
     * @param targetTable A Hashtable mapping names to Targets.
     *                Must not be <code>null</code>.
     * @return a Vector of ALL Target objects in sorted order.
     * @exception BuildException if there is a cyclic dependency among the
     *                           targets, or if a named target does not exist.
     */
    public final Vector topoSort(String root, Hashtable targetTable)
        throws BuildException {
        return topoSort(new String[] {root}, targetTable, true);
    }

    /**
     * Topologically sort a set of targets.  Equivalent to calling
     * <code>topoSort(new String[] {root}, targets, returnAll)</code>.
     *
     * @param root The name of the root target. The sort is created in such
     *             a way that the sequence of Targets up to the root
     *             target is the minimum possible such sequence.
     *             Must not be <code>null</code>.
     * @param targetTable A Hashtable mapping names to Targets.
     *                Must not be <code>null</code>.
     * @param returnAll <code>boolean</code> indicating whether to return all
     *                  targets, or the execution sequence only.
     * @return a Vector of Target objects in sorted order.
     * @exception BuildException if there is a cyclic dependency among the
     *                           targets, or if a named target does not exist.
     * @since Ant 1.6.3
     */
    public final Vector topoSort(String root, Hashtable targetTable,
                                 boolean returnAll) throws BuildException {
        return topoSort(new String[] {root}, targetTable, returnAll);
    }

    /**
     * Topologically sort a set of targets.
     *
     * @param root <code>String[]</code> containing the names of the root targets.
     *             The sort is created in such a way that the ordered sequence of
     *             Targets is the minimum possible such sequence to the specified
     *             root targets.
     *             Must not be <code>null</code>.
     * @param targetTable A map of names to targets (String to Target).
     *                Must not be <code>null</code>.
     * @param returnAll <code>boolean</code> indicating whether to return all
     *                  targets, or the execution sequence only.
     * @return a Vector of Target objects in sorted order.
     * @exception BuildException if there is a cyclic dependency among the
     *                           targets, or if a named target does not exist.
     * @since Ant 1.6.3
     */
    public final Vector topoSort(String[] root, Hashtable targetTable,
                                 boolean returnAll) throws BuildException {
        Vector ret = new Vector();
        Hashtable state = new Hashtable();
        Stack visiting = new Stack();

        // We first run a DFS based sort using each root as a starting node.
        // This creates the minimum sequence of Targets to the root node(s).
        // We then do a sort on any remaining unVISITED targets.
        // This is unnecessary for doing our build, but it catches
        // circular dependencies or missing Targets on the entire
        // dependency tree, not just on the Targets that depend on the
        // build Target.

        for (int i = 0; i < root.length; i++) {
            String st = (String) (state.get(root[i]));
            if (st == null) {
                tsort(root[i], targetTable, state, visiting, ret);
            } else if (st == VISITING) {
                throw new RuntimeException("Unexpected node in visiting state: "
                    + root[i]);
            }
        }
        StringBuffer buf = new StringBuffer("Build sequence for target(s)");

        for (int j = 0; j < root.length; j++) {
            buf.append((j == 0) ? " `" : ", `").append(root[j]).append('\'');
        }
        buf.append(" is " + ret);
        log(buf.toString(), MSG_VERBOSE);

        Vector complete = (returnAll) ? ret : new Vector(ret);
        for (Enumeration en = targetTable.keys(); en.hasMoreElements();) {
            String curTarget = (String) en.nextElement();
            String st = (String) state.get(curTarget);
            if (st == null) {
                tsort(curTarget, targetTable, state, visiting, complete);
            } else if (st == VISITING) {
                throw new RuntimeException("Unexpected node in visiting state: "
                    + curTarget);
            }
        }
        log("Complete build sequence is " + complete, MSG_VERBOSE);
        return ret;
    }

    /**
     * Perform a single step in a recursive depth-first-search traversal of
     * the target dependency tree.
     * <p>
     * The current target is first set to the &quot;visiting&quot; state, and
     * pushed onto the &quot;visiting&quot; stack.
     * <p>
     * An exception is then thrown if any child of the current node is in the
     * visiting state, as that implies a circular dependency. The exception
     * contains details of th