| public WriteByte ( byte value ) : void | ||
| value | byte | /// The byte value. /// |
| return | void | |
protected MemoryStream CompressBuffer(byte[] buf, int index, int length)
{
if (length < MIN_COMPRESS_LENGTH) return null;
MemoryStream ms = new MemoryStream(buf.Length);
DeflaterOutputStream dos = new DeflaterOutputStream(ms);
dos.WriteByte( (byte)(length & 0xff ));
dos.WriteByte( (byte)((length >> 8) & 0xff ));
dos.WriteByte( (byte)((length >> 16) & 0xff ));
dos.WriteByte( 0 );
dos.Write( buf, index, length );
dos.Finish();
if (ms.Length > length+4) return null;
return ms;
}
/// <summary>
/// Creates the static library.
/// </summary>
/// <param name='dataFile'>
/// Data file.
/// </param>
/// <param name='needZeroEnd'>
/// Need zero end.
/// </param>
public void CreateStaticLibrary(String dataFile, bool needZeroEnd)
{
// Generate the pretty name
this.SymbolName = GetSymbolName (dataFile);
// If we need a zero at the end (for text files), add 1 byte
int size = (int)new FileInfo (dataFile).Length;
byte[] fileBuffer = File.ReadAllBytes (dataFile);
this.Logger.LogInfo ("Embedding '" + dataFile + "'...");
// Use raw file
this.InputSize = size;
byte[] dataBuffer = fileBuffer;
if (this.Compress) {
// Compress the data file if required
using (MemoryStream stream = new MemoryStream()) {
using (DeflaterOutputStream deflate = new DeflaterOutputStream(stream)) {
int n = 0, len = 0;
while (n < size) {
len = Math.Min (size - n, CHUNK);
deflate.Write (fileBuffer, n, len);
n += CHUNK;
}
if (needZeroEnd) {
deflate.WriteByte (0);
}
deflate.Finish ();
}
dataBuffer = stream.ToArray ();
stream.Close ();
}
} else if (needZeroEnd) {
this.InputSize = size + 1;
dataBuffer = new byte[this.InputSize];
Array.Copy(fileBuffer, dataBuffer, size);
dataBuffer[size] = 0;
}
this.OutputSize = dataBuffer.Length;
if (this.Compress) {
this.Logger.LogInfo ("Compression ratio: " + Math.Floor(100.0 * this.OutputSize / this.InputSize) + "%");
}
// Compute the names
String sFile = Path.Combine (this.OutputDirectory, this.SymbolName + ".s");
String oFile = Path.Combine (this.OutputDirectory, this.SymbolName + ".o");
String aFile = Path.Combine (this.OutputDirectory, this.SymbolName + ".a");
this.OutputFile = Path.Combine (this.OutputDirectory, "lib" + this.SymbolName + ".a");
// (1) Create the assembly source file
this.Logger.LogDebug ("Create assembly file '" + Path.GetFileName (sFile) + "'...");
String content = String.Format (CultureInfo.CurrentCulture, TEMPLATE, this.SymbolName, this.OutputSize, SPACER_BYTE);
File.WriteAllText (sFile, content);
// (2) Create the object file
this.Logger.LogDebug ("Create object file '" + Path.GetFileName (oFile) + "'...");
using (ProcessHelper helper = new ProcessHelper("cc", string.Format("{0} -c -o \"{1}\" \"{2}\"", this.ArchitectureFlags ?? String.Empty, oFile, sFile))) {
helper.Logger = this.Logger;
helper.Execute ();
}
// (3) Create the static library
this.Logger.LogDebug ("Create library file '" + Path.GetFileName (aFile) + "'...");
using (ProcessHelper helper = new ProcessHelper("libtool", string.Format("-o \"{0}\" \"{1}\"", aFile, oFile))) {
helper.Logger = this.Logger;
helper.Execute ();
}
// (4) Swap binary content
this.Logger.LogDebug ("Swaping content to '" + Path.GetFileName (this.OutputFile) + "'...");
// Not quite memory-efficient, but simpler to code
byte[] outputBuffer = File.ReadAllBytes (aFile);
// Search for the beginning and the end of the spacer zone
int start = Locate (outputBuffer, new[] {SPACER_BYTE, SPACER_BYTE, SPACER_BYTE, SPACER_BYTE});
// Insert the data file content into the static library
Array.Copy (dataBuffer, 0, outputBuffer, start, dataBuffer.Length);
// Write the result on the disk
File.WriteAllBytes (this.OutputFile, outputBuffer);
}
