Java Resource.as方法代码示例

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Fulfill the ResourceCollection contract.
 * @return whether this is a filesystem-only resource collection.
 */
public synchronized boolean isFilesystemOnly() {
    if (isReference()) {
        return ((BaseResourceCollectionContainer) getCheckedRef()).isFilesystemOnly();
    }
    dieOnCircularReference();

    if (rc == null || rc.isFilesystemOnly()) {
        return true;
    }
    /* now check each Resource in case the child only
       lets through files from any children IT may have: */
    for (Resource r : this) {
        if (r.as(FileProvider.class) == null) {
            return false;
        }
    }
    return true;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Compare this FileResource to another Resource.
 * @param another the other Resource against which to compare.
 * @return a negative integer, zero, or a positive integer as this FileResource
 *         is less than, equal to, or greater than the specified Resource.
 */
@Override
public int compareTo(Resource another) {
    if (isReference()) {
        return getCheckedRef().compareTo(another);
    }
    if (this.equals(another)) {
        return 0;
    }
    FileProvider otherFP = another.as(FileProvider.class);
    if (otherFP != null) {
        File f = getFile();
        if (f == null) {
            return -1;
        }
        File of = otherFP.getFile();
        if (of == null) {
            return 1;
        }
        int compareFiles = f.compareTo(of);
        return compareFiles != 0 ? compareFiles
            : getName().compareTo(another.getName());
    }
    return super.compareTo(another);
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
private static OutputStream getOutputStream(final Resource resource, final boolean append, final Project project)
        throws IOException {
    if (append) {
        final Appendable a = resource.as(Appendable.class);
        if (a != null) {
            return a.getAppendOutputStream();
        }
        String msg = "Appendable OutputStream not available for non-appendable resource "
            + resource + "; using plain OutputStream";
        if (project != null) {
            project.log(msg, Project.MSG_VERBOSE);
        } else {
            System.out.println(msg);
        }
    }
    return resource.getOutputStream();
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Sets permissions on a {@link Resource} - doesn't do anything
 * for unsupported resource types.
 *
 * <p>Supported types are:</p>
 * <ul>
 *  <li>any {@link FileProvider}</li>
 *  <li>{@link ArchiveResource}</li>
 * </ul>
 *
 * @param r the resource to set permissions for
 * @param permissions the permissions
 * @param posixNotSupportedCallback optional callback that is
 * invoked for a file provider resource if the file-system holding
 * the file doesn't support PosixFilePermissions. The Path
 * corresponding to the file is passed to the callback.
 * @throws IOException if something goes wrong
 */
public static void setPermissions(Resource r, Set<PosixFilePermission> permissions,
                                  Consumer<Path> posixNotSupportedCallback)
    throws IOException {
    FileProvider f = r.as(FileProvider.class);
    if (f != null) {
        Path p = f.getFile().toPath();
        PosixFileAttributeView view =
            Files.getFileAttributeView(p, PosixFileAttributeView.class);
        if (view != null) {
            view.setPermissions(permissions);
        } else if (posixNotSupportedCallback != null) {
            posixNotSupportedCallback.accept(p);
        }
    } else if (r instanceof ArchiveResource) {
        ((ArchiveResource) r).setMode(modeFromPermissions(permissions,
                                                          FileType.of(r)));
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * The resource to expand; required.
 * @param src resource to expand
 */
public void setSrcResource(Resource src) {
    if (!src.isExists()) {
        throw new BuildException("the archive %s doesn't exist",
            src.getName());
    }
    if (src.isDirectory()) {
        throw new BuildException("the archive %s can't be a directory",
            src.getName());
    }
    FileProvider fp = src.as(FileProvider.class);
    if (fp != null) {
        source = fp.getFile();
    } else if (!supportsNonFileResources()) {
        throw new BuildException(
            "The source %s is not a FileSystem Only FileSystem resources are supported.",
            src.getName());
    }
    srcResource = src;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Styles all existing resources.
 *
 * @param stylesheet style sheet to use
 * @since Ant 1.7
 */
private void processResources(final Resource stylesheet) {
    for (final Resource r : resources) {
        if (!r.isExists()) {
            continue;
        }
        File base = baseDir;
        String name = r.getName();
        final FileProvider fp = r.as(FileProvider.class);
        if (fp != null) {
            final FileResource f = ResourceUtils.asFileResource(fp);
            base = f.getBaseDir();
            if (base == null) {
                name = f.getFile().getAbsolutePath();
            }
        }
        process(base, name, destDir, stylesheet);
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Resource to write to.
 * @param output the Resource to write to.
 * @since Ant 1.8
 */
public void setOutput(Resource output) {
    if (this.output != null) {
        throw new BuildException("Cannot set > 1 output target");
    }
    this.output = output;
    FileProvider fp = output.as(FileProvider.class);
    this.file = fp != null ? fp.getFile() : null;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
private static boolean areSame(final Resource resource1, final Resource resource2) throws IOException {
    if (resource1 == null || resource2 == null) {
        return false;
    }
    final FileProvider fileResource1 = resource1.as(FileProvider.class);
    if (fileResource1 == null) {
        return false;
    }
    final FileProvider fileResource2 = resource2.as(FileProvider.class);
    if (fileResource2 == null) {
        return false;
    }
    return FileUtils.getFileUtils().areSame(fileResource1.getFile(), fileResource2.getFile());
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
public void execute() {
    for (Resource r : resources) {
        URLProvider up = r.as(URLProvider.class);
        if (up != null) {
            URL u = up.getURL();
            try {
                FileUtils.close(u.openConnection());
            } catch (IOException ex) {
                // ignore
            }
        }
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
private String resourceToURI(final Resource resource) {
    final FileProvider fp = resource.as(FileProvider.class);
    if (fp != null) {
        return FILE_UTILS.toURI(fp.getFile().getAbsolutePath());
    }
    final URLProvider up = resource.as(URLProvider.class);
    if (up != null) {
        final URL u = up.getURL();
        return String.valueOf(u);
    } else {
        return resource.getName();
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Does the actual work; assumes everything has been checked by now.
 * @throws BuildException if an error occurs.
 */
protected void touch() throws BuildException {
    long defaultTimestamp = getTimestamp();

    if (file != null) {
        touch(new FileResource(file.getParentFile(), file.getName()),
              defaultTimestamp);
    }
    if (resources == null) {
        return;
    }
    // deal with the resource collections
    for (Resource r : resources) {
        Touchable t = r.as(Touchable.class);
        if (t == null) {
            throw new BuildException("Can't touch " + r);
        }
        touch(r, defaultTimestamp);
    }

    // deal with filesets in a special way since the task
    // originally also used the directories and Union won't return
    // them.
    for (FileSet fs : filesets) {
        DirectoryScanner ds = fs.getDirectoryScanner(getProject());
        File fromDir = fs.getDir(getProject());

        for (String srcDir : ds.getIncludedDirectories()) {
            touch(new FileResource(fromDir, srcDir), defaultTimestamp);
        }
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Check the attributes.
 */
private void checkAttributes() {

    if (userAgent == null || userAgent.trim().length() == 0) {
        throw new BuildException("userAgent may not be null or empty");
    }

    if (sources.size() == 0) {
        throw new BuildException("at least one source is required",
                                 getLocation());
    }
    for (final Resource r : sources) {
        final URLProvider up = r.as(URLProvider.class);
        if (up == null) {
            throw new BuildException(
                "Only URLProvider resources are supported", getLocation());
        }
    }

    if (destination == null) {
        throw new BuildException("dest attribute is required", getLocation());
    }

    if (destination.exists() && sources.size() > 1
        && !destination.isDirectory()) {
        throw new BuildException(
            "The specified destination is not a directory", getLocation());
    }

    if (destination.exists() && !destination.canWrite()) {
        throw new BuildException("Can't write to "
                                 + destination.getAbsolutePath(),
                                 getLocation());
    }

    if (sources.size() > 1 && !destination.exists()) {
        destination.mkdirs();
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * The resource to pack; required.
 * @param src resource to expand
 */
public void setSrcResource(Resource src) {
    if (src.isDirectory()) {
        throw new BuildException("the source can't be a directory");
    }
    FileProvider fp = src.as(FileProvider.class);
    if (fp != null) {
        source = fp.getFile();
    } else if (!supportsNonFileResources()) {
        throw new BuildException("Only FileSystem resources are supported.");
    }
    this.src = src;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * The resource to pack; required.
 * @param src resource to expand
 */
public void setSrcResource(Resource src) {
    if (src.isDirectory()) {
        throw new BuildException("the source can't be a directory");
    }
    if (src.as(FileProvider.class) != null || supportsNonFileResources()) {
        this.src = src;
    } else {
        throw new BuildException("Only FileSystem resources are supported.");
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Loads the stylesheet and set xsl:param parameters.
 *
 * @param stylesheet the resource from which to load the stylesheet.
 * @exception BuildException if the stylesheet cannot be loaded.
 * @since Ant 1.7
 */
protected void configureLiaison(final Resource stylesheet) throws BuildException {
    if (stylesheetLoaded && reuseLoadedStylesheet) {
        return;
    }
    stylesheetLoaded = true;

    try {
        log("Loading stylesheet " + stylesheet, Project.MSG_INFO);
        // We call liaison.configure() and then liaison.setStylesheet()
        // so that the internal variables of liaison can be set up
        if (liaison instanceof XSLTLiaison2) {
            ((XSLTLiaison2) liaison).configure(this);
        }
        if (liaison instanceof XSLTLiaison3) {
            // If we are here we can set the stylesheet as a
            // resource
            ((XSLTLiaison3) liaison).setStylesheet(stylesheet);
        } else {
            // If we are here we cannot set the stylesheet as
            // a resource, but we can set it as a file. So,
            // we make an attempt to get it as a file
            final FileProvider fp =
                stylesheet.as(FileProvider.class);
            if (fp != null) {
                liaison.setStylesheet(fp.getFile());
            } else {
                handleError(liaison.getClass().toString()
                            + " accepts the stylesheet only as a file");
                return;
            }
        }
        for (final Param p : params) {
            if (p.shouldUse()) {
                final Object evaluatedParam = evaluateParam(p);
                if (liaison instanceof XSLTLiaison4) {
                    ((XSLTLiaison4) liaison).addParam(p.getName(),
                        evaluatedParam);
                } else if (evaluatedParam == null || evaluatedParam instanceof String) {
                    liaison.addParam(p.getName(), (String) evaluatedParam);
                } else {
                    log("XSLTLiaison '" + liaison.getClass().getName()
                            + "' supports only String parameters. Converting parameter '" + p.getName()
                            + "' to its String value '" + evaluatedParam, Project.MSG_WARN);
                    liaison.addParam(p.getName(), String.valueOf(evaluatedParam));
                }
            }
        }
    } catch (final Exception ex) {
        log("Failed to transform using stylesheet " + stylesheet, Project.MSG_INFO);
        handleTransformationError(ex);
    }
}