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.android.builder.internal.packaging.zip.ZFile.java

/**
 * Writes an entry's data in the zip file. This includes everything: the local header and
 * the data itself. After writing, the entry is updated with the offset and its source replaced
 * with a source that reads from the zip file.
 *
 * @param entry the entry to write/*from   www. j a  v a 2  s.  c o  m*/
 * @param offset the offset at which the entry should be written
 * @throws IOException failed to write the entry
 */
private void writeEntry(@NonNull StoredEntry entry, long offset) throws IOException {
    Preconditions.checkArgument(entry.getDataDescriptorType() == DataDescriptorType.NO_DATA_DESCRIPTOR,
            "Cannot write entries with a data " + "descriptor.");
    Preconditions.checkNotNull(mRaf, "mRaf == null");
    Preconditions.checkState(mState == ZipFileState.OPEN_RW, "mState != ZipFileState.OPEN_RW");

    /*
     * Place the cursor and write the local header.
     */
    byte[] headerData = entry.toHeaderData();
    directWrite(offset, headerData);

    /*
     * Get the raw source data to write.
     */
    ProcessedAndRawByteSources source = entry.getSource();
    ByteSource rawContents = source.getRawByteSource();

    /*
     * Write the source data.
     */
    byte[] chunk = new byte[IO_BUFFER_SIZE];
    int r;
    long writeOffset = offset + headerData.length;
    InputStream is = rawContents.openStream();
    while ((r = is.read(chunk)) >= 0) {
        directWrite(writeOffset, chunk, 0, r);
        writeOffset += r;
    }

    is.close();

    /*
     * Set the entry's offset and create the entry source.
     */
    entry.replaceSourceFromZip(offset);
}