Scripting languages

A Python module named xdelta3main installs via setup.py, supports a single method: xdelta3main.xd3_main_cmdline(), which runs the xdelta3 main() without os.fork() and os.execl().

The (Swig) xdelta3 module exports xdelta3.xd3_encode_memory(), xdelta3.xdelta3_decode_memory(), and xdelta3.xd3_main_cmdline(). See xdelta3-test.py and xdelta3-regtest.py for examples.

import xdelta3

# in memory interface
source = 'source source input0 source source'
target = 'source source target source source'

result1, patch = xdelta3.xd3_encode_memory(target, source, len(target))
result2, target1 = xdelta3.xd3_decode_memory(patch, source, len(target))

assert result1 == 0
assert result2 == 0
assert target1 == target
assert len(patch) < len(target)

# command-line interface

source_file = ...
target_file = ...
command_args = ['xdelta3', '-f', '-s', source_file, target_file, output_file]

xdelta3.xd3_main_cmdline(command_args)

# same as
# xdelta3main.xd3_main_cmdline(command_args)