def buildLarchJar(outputStream,
additionalFilesAsNameBytesPairs,
filterFn=None,
larchJarURL=None):
"""
Build a JAR from an existing Larch JAR, along with additional files to make a packaged program
:param outputStream: The output stream to which the JAR is to be written
:param additionalFilesAsNameBytesPairs: Additional files in the form of a sequence of tuples consisting of (path, bytes)
:param filterFn: (optional) A filter function that can be used to exclude files from the existing Larch JAR; takes the form of function(name) -> boolean, should return True if file should be included
:param larchJarURL: (optional) A URL at which the existing Larch JAR can be obtained. If None, it will use the JAR from which Larch was started. Raises an error if no URL provided and Larch was not started from a JAR
"""
if larchJarURL is None:
larchJarURL = _larchJarURL
if larchJarURL is None:
raise RuntimeError, 'Larch was not loaded from a JAR file and no Larch JAR file was provided'
jarIn = JarInputStream(larchJarURL.openStream())
manifestIn = jarIn.getManifest()
manifestOut = Manifest(manifestIn)
jarOut = JarOutputStream(outputStream, manifestOut)
bytesBuffer = jarray.zeros(_BYTES_BUFFER_SIZE, 'b')
entryIn = jarIn.getNextJarEntry()
while entryIn is not None:
name = entryIn.getName()
if filterFn is None or filterFn(name):
bufferStream = ByteArrayOutputStream()
while True:
bytesRead = jarIn.read(bytesBuffer, 0, _BYTES_BUFFER_SIZE)
if bytesRead == -1:
break
bufferStream.write(bytesBuffer, 0, bytesRead)
entryOut = ZipEntry(name)
entryOut.setSize(bufferStream.size())
jarOut.putNextEntry(entryOut)
bufferStream.writeTo(jarOut)
jarOut.closeEntry()
entryIn = jarIn.getNextJarEntry()
for name, bytes in additionalFilesAsNameBytesPairs:
size = len(bytes)
entryOut = ZipEntry(name)
entryOut.setSize(size)
jarOut.putNextEntry(entryOut)
jarOut.write(bytes, 0, size)
jarOut.closeEntry()
jarOut.finish()
manifest)
while 1:
entry = jar.getNextEntry()
if not entry:
break
out = []
l3 = 512
while 1:
bt = jpype.JArray(jpype.JByte)(l3)
l = jar.read(bt, 0, l3)
if l == -1:
break
out.append((l, bt))
if out:
out[0][1][7] = 57
crc = CRC32()
for v in out:
crc.update(v[1], 0, v[0])
entry.setCrc(crc.getValue())
entry.setCompressedSize(-1)
target.putNextEntry(entry)
for v in out:
target.write(v[1], 0, v[0])
target.closeEntry()
target.close()
