Java Resource.getInputStream方法代码示例

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Return an InputStream for reading the contents of this Resource.
 * @return an InputStream object.
 * @throws IOException if the tar file cannot be opened,
 *         or the entry cannot be read.
 */
@Override
public InputStream getInputStream() throws IOException {
    if (isReference()) {
        return getCheckedRef().getInputStream();
    }
    Resource archive = getArchive();
    final TarInputStream i = new TarInputStream(archive.getInputStream());
    TarEntry te;
    while ((te = i.getNextEntry()) != null) {
        if (te.getName().equals(getName())) {
            return i;
        }
    }

    FileUtils.close(i);
    throw new BuildException("no entry " + getName() + " in "
                             + getArchive());
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * fetches information from the named entry inside the archive.
 */
@Override
protected void fetchEntry() {
    Resource archive = getArchive();
    try (TarInputStream i = new TarInputStream(archive.getInputStream())) {
        TarEntry te = null;
        while ((te = i.getNextEntry()) != null) {
            if (te.getName().equals(getName())) {
                setEntry(te);
                return;
            }
        }
    } catch (IOException e) {
        log(e.getMessage(), Project.MSG_DEBUG);
        throw new BuildException(e);
    }
    setEntry(null);
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * This method is to be overridden by extending unarchival tasks.
 *
 * @param srcR      the source resource
 * @param dir       the destination directory
 * @since Ant 1.7
 */
@Override
protected void expandResource(Resource srcR, File dir) {
    if (!srcR.isExists()) {
        throw new BuildException("Unable to untar "
                                 + srcR.getName()
                                 + " as the it does not exist",
                                 getLocation());
    }

    try (InputStream i = srcR.getInputStream()) {
        expandStream(srcR.getName(), i, dir);
    } catch (IOException ioe) {
        throw new BuildException("Error while expanding " + srcR.getName(),
                                 ioe, getLocation());
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Text compares the contents of two Resources.
 * Ignores different kinds of line endings.
 * @param r1 the Resource whose content is to be compared.
 * @param r2 the other Resource whose content is to be compared.
 * @return a negative integer, zero, or a positive integer as the first
 *         argument is less than, equal to, or greater than the second.
 * @throws IOException if the Resources cannot be read.
 * @since Ant 1.7
 */
private static int textCompare(final Resource r1, final Resource r2) throws IOException {
    try (BufferedReader in1 =
        new BufferedReader(new InputStreamReader(r1.getInputStream()));
            BufferedReader in2 = new BufferedReader(
                new InputStreamReader(r2.getInputStream()))) {

        String expected = in1.readLine();
        while (expected != null) {
            final String actual = in2.readLine();
            if (!expected.equals(actual)) {
                if (actual == null) {
                    return 1;
                }
                return expected.compareTo(actual);
            }
            expected = in1.readLine();
        }
        return in2.readLine() == null ? 0 : -1; //NOSONAR
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
private static void copyUsingStreams(final Resource source, final Resource dest,
                                     final boolean append, final Project project)
    throws IOException {

    if (areSame(source, dest)) {
        // copying the "same" file to itself will corrupt the file, so we skip it
        log(project, "Skipping (self) copy of " + source +  " to " + dest);
        return;
    }
    try (InputStream in = source.getInputStream();
         OutputStream out = getOutputStream(dest, append, project)) {

        final byte[] buffer = new byte[FileUtils.BUF_SIZE];
        int count = 0;
        do {
            out.write(buffer, 0, count);
            count = in.read(buffer, 0, buffer.length);
        } while (count != -1);
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
private void nextResource() throws IOException {
    closeCurrent();
    while (iter.hasNext()) {
        Resource r = iter.next();
        if (!r.isExists()) {
            continue;
        }
        log("Concatenating " + r.toLongString(), Project.MSG_VERBOSE);
        try {
            currentStream = new BufferedInputStream(r.getInputStream());
            return;
        } catch (IOException eyeOhEx) {
            if (!ignoreErrors) {
                log("Failed to get input stream for " + r, Project.MSG_ERR);
                throw eyeOhEx;
            }
        }
    }
    eof = true;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Returns properties from a specified properties file.
 *
 * @param resource The resource to load properties from.
 */
private Properties getProperties(Resource resource) {
    InputStream in = null;
    Properties props = new Properties();
    try {
        in = resource.getInputStream();
        props.load(in);
    } catch (IOException ioe) {
        if (getProject() != null) {
            getProject().log("getProperties failed, " + ioe.getMessage(), Project.MSG_ERR);
        } else {
            ioe.printStackTrace(); //NOSONAR
        }
    } finally {
        FileUtils.close(in);
    }

    return props;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Add a file entry.
 */
private void addResource(final Resource r, final String name, final String prefix,
                         final ZipOutputStream zOut, final int mode,
                         final ZipFile zf, final File fromArchive)
    throws IOException {

    if (zf != null) {
        final ZipEntry ze = zf.getEntry(r.getName());

        if (ze != null) {
            final boolean oldCompress = doCompress;
            if (keepCompression) {
                doCompress = (ze.getMethod() == ZipEntry.DEFLATED);
            }
            try (final BufferedInputStream is = new BufferedInputStream(zf.getInputStream(ze))) {
                zipFile(is, zOut, prefix + name, ze.getTime(),
                        fromArchive, mode, ze.getExtraFields(true));
            } finally {
                doCompress = oldCompress;
            }
        }
    } else {
        try (final BufferedInputStream is = new BufferedInputStream(r.getInputStream())) {
            zipFile(is, zOut, prefix + name, r.getLastModified(),
                    fromArchive, mode, r instanceof ZipResource
                    ? ((ZipResource) r).getExtraFields() : null);
        }
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
@Override
public Reader getReader(Resource o) throws IOException {
    InputStream is = o.getInputStream();
    return new BufferedReader(encoding == null
        ? new InputStreamReader(is)
        : new InputStreamReader(is, encoding));
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Load a properties resource.
 * @param propertyResource the resource to load the properties from.
 * @return loaded <code>Properties</code> object.
 * @throws BuildException if the resource could not be found or read.
 * @since Ant 1.8.0
 */
public Properties getProperties(Resource propertyResource)
    throws BuildException {
    Properties props = new Properties();

    try (
        InputStream
        in = propertyResource.getInputStream()){
        props.load(in);
    } catch (IOException e) {
        throw new BuildException("Property resource (%s) cannot be loaded.",
            propertyResource.getName());
    }
    return props;
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * zip a resource to an output stream
 * @param resource the resource to zip
 * @param zOut the output stream
 * @throws IOException on error
 */
protected void zipResource(Resource resource, OutputStream zOut)
    throws IOException {
    try (InputStream rIn = resource.getInputStream()) {
        zipFile(rIn, zOut);
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * The heart of the matter. This is where the selector gets to decide
 * on the inclusion of a Resource.
 *
 * @param r the Resource to check.
 * @return whether the Resource is selected.
 */
public boolean isSelected(Resource r) {
    // throw BuildException on error
    validate();

    if (r.isDirectory() || contains.isEmpty()) {
        return true;
    }

    String userstr = contains;
    if (!casesensitive) {
        userstr = contains.toLowerCase();
    }
    if (ignorewhitespace) {
        userstr = SelectorUtils.removeWhitespace(userstr);
    }
    try (BufferedReader in = new BufferedReader(
        new InputStreamReader(r.getInputStream(), encoding == null
            ? Charset.defaultCharset() : Charset.forName(encoding)))) {
        try {
            String teststr = in.readLine();
            while (teststr != null) {
                if (!casesensitive) {
                    teststr = teststr.toLowerCase();
                }
                if (ignorewhitespace) {
                    teststr = SelectorUtils.removeWhitespace(teststr);
                }
                if (teststr.indexOf(userstr) > -1) {
                    return true;
                }
                teststr = in.readLine();
            }
            return false;
        } catch (IOException ioe) {
            throw new BuildException("Could not read " + r.toLongString());
        }
    } catch (IOException e) {
        throw new BuildException(
            "Could not get InputStream from " + r.toLongString(), e);
    }
}
 

import org.apache.tools.ant.types.Resource; //导入方法依赖的package包/类
/**
 * Binary compares the contents of two Resources.
 * <p>
 * simple but sub-optimal comparison algorithm. written for working
 * rather than fast. Better would be a block read into buffers followed
 * by long comparisons apart from the final 1-7 bytes.
 * </p>
 *
 * @param r1 the Resource whose content is to be compared.
 * @param r2 the other Resource whose content is to be compared.
 * @return a negative integer, zero, or a positive integer as the first
 *         argument is less than, equal to, or greater than the second.
 * @throws IOException if the Resources cannot be read.
 * @since Ant 1.7
 */
private static int binaryCompare(final Resource r1, final Resource r2) throws IOException {
    try (InputStream in1 = new BufferedInputStream(r1.getInputStream());
            InputStream in2 =
                new BufferedInputStream(r2.getInputStream())) {

        for (int b1 = in1.read(); b1 != -1; b1 = in1.read()) {
            final int b2 = in2.read();
            if (b1 != b2) {
                return b1 > b2 ? 1 : -1;
            }
        }
        return in2.read() == -1 ? 0 : -1;
    }
}