Example usage for com.google.common.io ByteSource openStream

Introduction

In this page you can find the example usage for com.google.common.io ByteSource openStream.

Prototype

public abstract InputStream openStream() throws IOException;

Source Link

Document

Opens a new InputStream for reading from this source.

Usage

From source file:com.tinspx.util.io.ByteUtils.java

/**
 * Copies at most {@code limit} bytes from {@code from} into {@code to},
 * returning the total number of bytes copied. {@code to} is not closed or
 * flushed./*w  ww  .  j av  a 2  s.  c o m*/
 * 
 * @param from the source to read bytes from
 * @param to the destination to copy bytes read from {@code from} into
 * @param limit the maximum number of bytes to copy
 * @return the total number of bytes copied from {@code from} to {@code to}
 * @throws IOException if an IOException occurs
 * @throws NullPointerException if either {@code from} or {@code to} is null
 * @throws IllegalArgumentException if {@code limit} is negative
 */
@ThreadLocalArray(8192)
public static long copy(@NonNull ByteSource from, @NonNull @WillNotClose OutputStream to, long limit)
        throws IOException {
    final Closer closer = Closer.create();
    try {
        return copy(closer.register(from.openStream()), to, limit);
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

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From source file:com.tinspx.util.io.ByteUtils.java

/**
 * Copies at most {@code limit} bytes from {@code from} into {@code to},
 * returning the total number of bytes copied. {@code to} is not closed or
 * flushed./*  w  w  w .  j av  a 2s. c om*/
 * 
 * @param from the source to read bytes from
 * @param to the destination to copy bytes read from {@code from} into
 * @param limit the maximum number of bytes to copy
 * @return the total number of bytes copied from {@code from} to {@code to}
 * @throws IOException if an IOException occurs
 * @throws NullPointerException if either {@code from} or {@code to} is null
 * @throws IllegalArgumentException if {@code limit} is negative
 */
@ThreadLocalArray(8192)
public static long copy(@NonNull ByteSource from, @NonNull PrimitiveSink to, long limit) throws IOException {
    checkLimit(limit);
    final Closer closer = Closer.create();
    try {
        return copy(closer.register(from.openStream()), to, limit);
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

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From source file:com.tinspx.util.io.ByteUtils.java

/**
 * Copies at most {@code limit} bytes from {@code from} into {@code to},
 * returning the total number of bytes copied. Byte processing stops on EOF
 * or when {@link ByteProcessor#processBytes(byte[], int, int) processBytes}
 * returns {@code false}./*  w  w  w. j av  a2  s.c  om*/
 * 
 * @param from the source to read bytes from
 * @param to the destination to copy bytes read from {@code from} into
 * @param limit the maximum number of bytes to copy
 * @return the total number of bytes copied from {@code from} to {@code to}
 * @throws IOException if an IOException occurs
 * @throws NullPointerException if either {@code from} or {@code to} is null
 * @throws IllegalArgumentException if {@code limit} is negative
 */
@ThreadLocalArray(8192)
public static long copy(@NonNull ByteSource from, @NonNull ByteProcessor<?> to, long limit) throws IOException {
    checkLimit(limit);
    final Closer closer = Closer.create();
    try {
        return copy(closer.register(from.openStream()), to, limit);
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

---

From source file:com.tinspx.util.io.ByteUtils.java

/**
 * Provides an alternative to {@link ByteSource#read()}.
 *//*from w  w  w.j  av a  2  s. c  o  m*/
@ThreadLocalArray(8192)
public static byte[] toByteArray(ByteSource source) throws IOException {
    final Closer closer = Closer.create();
    try {
        if (source instanceof ChannelSource && ((ChannelSource) source).hasKnownSize()) {
            return toByteArray(closer.register(source.openStream()), checkByteSourceSize(source));
        } else {
            return toByteArray(closer.register(source.openStream()));
        }
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

---

From source file:com.tinspx.util.io.ByteUtils.java

@ThreadLocalArray(8192)
static boolean contentEqualsImpl(@NonNull ByteSource source, byte[] bytes, int off, int len)
        throws IOException {
    checkPositionIndexes(off, off + len, bytes.length);
    final Closer closer = Closer.create();
    try {/*from  w  w w  . j  av  a  2s  . c  om*/
        return contentEquals(closer.register(source.openStream()), bytes, off, len);
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

---

From source file:com.tinspx.util.io.ByteUtils.java

/**
 * Copies at most {@code limit} bytes from {@code from} into {@code to},
 * returning the total number of bytes copied. This method <i>always</i>
 * copies {@code from} into {@code to} in chunks;
 * {@link ByteSource#copyTo(ByteSink)} or
 * {@link ByteSource#copyTo(OutputStream)} is never used.
 * //from   w  w w.j a v  a  2 s .co m
 * @param from the source to read bytes from
 * @param to the destination to copy bytes read from {@code from} into
 * @param limit the maximum number of bytes to copy
 * @return the total number of bytes copied from {@code from} to {@code to}
 * @throws IOException if an IOException occurs
 * @throws NullPointerException if either {@code from} or {@code to} is null
 * @throws IllegalArgumentException if {@code limit} is negative
 */
@ThreadLocalArray(8192)
public static long copy(@NonNull ByteSource from, @NonNull ByteSink to, long limit) throws IOException {
    checkLimit(limit);
    final Closer closer = Closer.create();
    try {
        OutputStream out = closer.register(to.openStream());
        long total = copy(closer.register(from.openStream()), out, limit);
        out.flush();
        return total;
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

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From source file:org.opendaylight.yangtools.yang.parser.impl.YangParserImpl.java

private Map<ByteSource, ParseTree> parseYangSources(final Collection<ByteSource> sources)
        throws IOException, YangSyntaxErrorException {
    final Map<ByteSource, ParseTree> trees = new HashMap<>();
    for (ByteSource source : sources) {
        try (InputStream stream = source.openStream()) {
            trees.put(source, parseYangSource(stream));
        }/*from w  w  w .j  ava 2s .  c om*/
    }
    return trees;
}

---

From source file:com.tinspx.util.io.ByteUtils.java

/**
 * Copies at most {@code limit} bytes from {@code from} into {@code to},
 * returning the total number of bytes copied. {@code to} is not closed.
 * /*from  w w  w .  j  a v  a2 s. c om*/
 * @param from the source to read bytes from
 * @param to the destination to copy bytes read from {@code from} into
 * @param limit the maximum number of bytes to copy
 * @return the total number of bytes copied from {@code from} to {@code to}
 * @throws IOException if an IOException occurs
 * @throws NullPointerException if either {@code from} or {@code to} is null
 * @throws IllegalArgumentException if {@code limit} is negative
 */
@ThreadLocalArray(8192)
public static long copy(@NonNull ByteSource from, @NonNull @WillNotClose WritableByteChannel to, long limit)
        throws IOException {
    checkLimit(limit);
    final Closer closer = Closer.create();
    try {
        if (from instanceof ChannelSource) {
            return copy(closer.register(((ChannelSource) from).openChannel()), to, limit);
        } else {
            return copy(closer.register(from.openStream()), to, limit);
        }
    } catch (Throwable e) {
        throw closer.rethrow(e);
    } finally {
        closer.close();
    }
}

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From source file:org.onos.yangtools.yang.parser.impl.YangParserImpl.java

private Map<ByteSource, ModuleBuilder> parseSourcesToBuilders(final Collection<ByteSource> sources,
        final SchemaContext context) throws IOException, YangSyntaxErrorException {
    final ParseTreeWalker walker = new ParseTreeWalker();
    final Map<ByteSource, ParseTree> sourceToTree = parseYangSources(sources);
    final Map<ByteSource, ModuleBuilder> sourceToBuilder = new LinkedHashMap<>();

    // validate yang
    new YangModelBasicValidator(walker).validate(sourceToTree.values());

    Map<String, NavigableMap<Date, URI>> namespaceContext = BuilderUtils
            .createYangNamespaceContext(sourceToTree.values(), Optional.fromNullable(context));
    YangParserListenerImpl yangModelParser;
    for (Map.Entry<ByteSource, ParseTree> entry : sourceToTree.entrySet()) {
        ByteSource source = entry.getKey();
        String path = null; // TODO refactor to Optional
        // TODO refactor so that path can be retrieved without opening
        // stream: NamedInputStream -> NamedByteSource ?
        try (InputStream stream = source.openStream()) {
            if (stream instanceof NamedInputStream) {
                path = stream.toString();
            }//from   w  w w .  ja  v  a2 s. co m
        }
        yangModelParser = new YangParserListenerImpl(namespaceContext, path);
        walker.walk(yangModelParser, entry.getValue());
        ModuleBuilder moduleBuilder = yangModelParser.getModuleBuilder();
        moduleBuilder.setSource(source);
        sourceToBuilder.put(source, moduleBuilder);
    }
    return sourceToBuilder;
}

---

From source file:org.opendaylight.yangtools.yang.parser.impl.YangParserImpl.java

private Map<ByteSource, ModuleBuilder> parseSourcesToBuilders(final Collection<ByteSource> sources,
        final SchemaContext context) throws IOException, YangSyntaxErrorException {
    final ParseTreeWalker walker = new ParseTreeWalker();
    final Map<ByteSource, ParseTree> sourceToTree = parseYangSources(sources);
    final Map<ByteSource, ModuleBuilder> sourceToBuilder = new LinkedHashMap<>();

    // validate yang
    new YangModelBasicValidator(walker).validate(sourceToTree.values());

    Map<String, TreeMap<Date, URI>> namespaceContext = BuilderUtils
            .createYangNamespaceContext(sourceToTree.values(), Optional.fromNullable(context));
    YangParserListenerImpl yangModelParser;
    for (Map.Entry<ByteSource, ParseTree> entry : sourceToTree.entrySet()) {
        ByteSource source = entry.getKey();
        String path = null; // TODO refactor to Optional
        // TODO refactor so that path can be retrieved without opening
        // stream: NamedInputStream -> NamedByteSource ?
        try (InputStream stream = source.openStream()) {
            if (stream instanceof NamedInputStream) {
                path = stream.toString();
            }/* w  w w.  j  a  v  a  2 s .c o m*/
        }
        yangModelParser = new YangParserListenerImpl(namespaceContext, path);
        walker.walk(yangModelParser, entry.getValue());
        ModuleBuilder moduleBuilder = yangModelParser.getModuleBuilder();
        moduleBuilder.setSource(source);
        sourceToBuilder.put(source, moduleBuilder);
    }
    return sourceToBuilder;
}

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