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278 lines
11 KiB
278 lines
11 KiB
#!/usr/bin/env python3
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"""Test zstd interoperability between versions"""
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# ################################################################
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# Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
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# All rights reserved.
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#
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# This source code is licensed under both the BSD-style license (found in the
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# LICENSE file in the root directory of this source tree) and the GPLv2 (found
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# in the COPYING file in the root directory of this source tree).
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# You may select, at your option, one of the above-listed licenses.
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# ################################################################
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import filecmp
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import glob
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import hashlib
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import os
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import shutil
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import sys
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import subprocess
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from subprocess import Popen, PIPE
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repo_url = 'https://github.com/facebook/zstd.git'
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tmp_dir_name = 'tests/versionsTest'
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make_cmd = 'make'
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git_cmd = 'git'
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test_dat_src = 'README.md'
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test_dat = 'test_dat'
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head = 'vdevel'
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dict_source = 'dict_source'
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dict_files = './zstd/programs/*.c ./zstd/lib/common/*.c ./zstd/lib/compress/*.c ./zstd/lib/decompress/*.c ./zstd/lib/dictBuilder/*.c ./zstd/lib/legacy/*.c '
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dict_files += './zstd/programs/*.h ./zstd/lib/common/*.h ./zstd/lib/compress/*.h ./zstd/lib/dictBuilder/*.h ./zstd/lib/legacy/*.h'
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def execute(command, print_output=False, print_error=True, param_shell=False):
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popen = Popen(command, stdout=PIPE, stderr=PIPE, shell=param_shell)
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stdout_lines, stderr_lines = popen.communicate()
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stderr_lines = stderr_lines.decode("utf-8")
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stdout_lines = stdout_lines.decode("utf-8")
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if print_output:
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print(stdout_lines)
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print(stderr_lines)
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if popen.returncode is not None and popen.returncode != 0:
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if not print_output and print_error:
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print(stderr_lines)
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return popen.returncode
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def proc(cmd_args, pipe=True, dummy=False):
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if dummy:
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return
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if pipe:
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subproc = Popen(cmd_args, stdout=PIPE, stderr=PIPE)
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else:
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subproc = Popen(cmd_args)
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return subproc.communicate()
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def make(args, pipe=True):
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return proc([make_cmd] + args, pipe)
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def git(args, pipe=True):
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return proc([git_cmd] + args, pipe)
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def get_git_tags():
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stdout, stderr = git(['tag', '-l', 'v[0-9].[0-9].[0-9]'])
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tags = stdout.decode('utf-8').split()
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return tags
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def create_dict(tag, dict_source_path):
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dict_name = 'dict.' + tag
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if not os.path.isfile(dict_name):
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cFiles = glob.glob(dict_source_path + "/*.c")
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hFiles = glob.glob(dict_source_path + "/*.h")
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if tag == 'v0.5.0':
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result = execute('./dictBuilder.' + tag + ' ' + ' '.join(cFiles) + ' ' + ' '.join(hFiles) + ' -o ' + dict_name, print_output=False, param_shell=True)
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else:
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result = execute('./zstd.' + tag + ' -f --train ' + ' '.join(cFiles) + ' ' + ' '.join(hFiles) + ' -o ' + dict_name, print_output=False, param_shell=True)
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if result == 0:
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print(dict_name + ' created')
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else:
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print('ERROR: creating of ' + dict_name + ' failed')
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else:
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print(dict_name + ' already exists')
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def dict_compress_sample(tag, sample):
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dict_name = 'dict.' + tag
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DEVNULL = open(os.devnull, 'wb')
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if subprocess.call(['./zstd.' + tag, '-D', dict_name, '-f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_01_64_' + tag + '_dictio.zst')
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if subprocess.call(['./zstd.' + tag, '-D', dict_name, '-5f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_05_64_' + tag + '_dictio.zst')
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if subprocess.call(['./zstd.' + tag, '-D', dict_name, '-9f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_09_64_' + tag + '_dictio.zst')
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if subprocess.call(['./zstd.' + tag, '-D', dict_name, '-15f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_15_64_' + tag + '_dictio.zst')
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if subprocess.call(['./zstd.' + tag, '-D', dict_name, '-18f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_18_64_' + tag + '_dictio.zst')
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# zstdFiles = glob.glob("*.zst*")
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# print(zstdFiles)
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print(tag + " : dict compression completed")
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def compress_sample(tag, sample):
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DEVNULL = open(os.devnull, 'wb')
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if subprocess.call(['./zstd.' + tag, '-f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_01_64_' + tag + '_nodict.zst')
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if subprocess.call(['./zstd.' + tag, '-5f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_05_64_' + tag + '_nodict.zst')
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if subprocess.call(['./zstd.' + tag, '-9f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_09_64_' + tag + '_nodict.zst')
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if subprocess.call(['./zstd.' + tag, '-15f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_15_64_' + tag + '_nodict.zst')
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if subprocess.call(['./zstd.' + tag, '-18f', sample], stderr=DEVNULL) == 0:
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os.rename(sample + '.zst', sample + '_18_64_' + tag + '_nodict.zst')
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# zstdFiles = glob.glob("*.zst*")
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# print(zstdFiles)
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print(tag + " : compression completed")
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# http://stackoverflow.com/a/19711609/2132223
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def sha1_of_file(filepath):
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with open(filepath, 'rb') as f:
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return hashlib.sha1(f.read()).hexdigest()
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def remove_duplicates():
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list_of_zst = sorted(glob.glob('*.zst'))
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for i, ref_zst in enumerate(list_of_zst):
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if not os.path.isfile(ref_zst):
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continue
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for j in range(i + 1, len(list_of_zst)):
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compared_zst = list_of_zst[j]
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if not os.path.isfile(compared_zst):
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continue
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if filecmp.cmp(ref_zst, compared_zst):
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os.remove(compared_zst)
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print('duplicated : {} == {}'.format(ref_zst, compared_zst))
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def decompress_zst(tag):
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dec_error = 0
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list_zst = sorted(glob.glob('*_nodict.zst'))
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for file_zst in list_zst:
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print(file_zst, end=' ')
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print(tag, end=' ')
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file_dec = file_zst + '_d64_' + tag + '.dec'
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if tag <= 'v0.5.0':
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params = ['./zstd.' + tag, '-df', file_zst, file_dec]
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else:
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params = ['./zstd.' + tag, '-df', file_zst, '-o', file_dec]
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if execute(params) == 0:
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if not filecmp.cmp(file_dec, test_dat):
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print('ERR !! ')
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dec_error = 1
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else:
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print('OK ')
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else:
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print('command does not work')
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dec_error = 1
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return dec_error
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def decompress_dict(tag):
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dec_error = 0
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list_zst = sorted(glob.glob('*_dictio.zst'))
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for file_zst in list_zst:
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dict_tag = file_zst[0:len(file_zst)-11] # remove "_dictio.zst"
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if head in dict_tag: # find vdevel
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dict_tag = head
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else:
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dict_tag = dict_tag[dict_tag.rfind('v'):]
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if tag == 'v0.6.0' and dict_tag < 'v0.6.0':
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continue
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dict_name = 'dict.' + dict_tag
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print(file_zst + ' ' + tag + ' dict=' + dict_tag, end=' ')
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file_dec = file_zst + '_d64_' + tag + '.dec'
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if tag <= 'v0.5.0':
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params = ['./zstd.' + tag, '-D', dict_name, '-df', file_zst, file_dec]
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else:
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params = ['./zstd.' + tag, '-D', dict_name, '-df', file_zst, '-o', file_dec]
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if execute(params) == 0:
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if not filecmp.cmp(file_dec, test_dat):
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print('ERR !! ')
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dec_error = 1
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else:
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print('OK ')
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else:
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print('command does not work')
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dec_error = 1
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return dec_error
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if __name__ == '__main__':
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error_code = 0
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base_dir = os.getcwd() + '/..' # /path/to/zstd
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tmp_dir = base_dir + '/' + tmp_dir_name # /path/to/zstd/tests/versionsTest
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clone_dir = tmp_dir + '/' + 'zstd' # /path/to/zstd/tests/versionsTest/zstd
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dict_source_path = tmp_dir + '/' + dict_source # /path/to/zstd/tests/versionsTest/dict_source
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programs_dir = base_dir + '/programs' # /path/to/zstd/programs
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os.makedirs(tmp_dir, exist_ok=True)
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# since Travis clones limited depth, we should clone full repository
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if not os.path.isdir(clone_dir):
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git(['clone', repo_url, clone_dir])
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shutil.copy2(base_dir + '/' + test_dat_src, tmp_dir + '/' + test_dat)
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# Retrieve all release tags
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print('Retrieve all release tags :')
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os.chdir(clone_dir)
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alltags = get_git_tags() + [head]
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tags = [t for t in alltags if t >= 'v0.5.0']
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print(tags)
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# Build all release zstd
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for tag in tags:
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os.chdir(base_dir)
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dst_zstd = '{}/zstd.{}'.format(tmp_dir, tag) # /path/to/zstd/tests/versionsTest/zstd.<TAG>
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if not os.path.isfile(dst_zstd) or tag == head:
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if tag != head:
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r_dir = '{}/{}'.format(tmp_dir, tag) # /path/to/zstd/tests/versionsTest/<TAG>
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os.makedirs(r_dir, exist_ok=True)
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os.chdir(clone_dir)
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git(['--work-tree=' + r_dir, 'checkout', tag, '--', '.'], False)
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if tag == 'v0.5.0':
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os.chdir(r_dir + '/dictBuilder') # /path/to/zstd/tests/versionsTest/v0.5.0/dictBuilder
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make(['clean', 'dictBuilder'], False)
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shutil.copy2('dictBuilder', '{}/dictBuilder.{}'.format(tmp_dir, tag))
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os.chdir(r_dir + '/programs') # /path/to/zstd/tests/versionsTest/<TAG>/programs
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make(['clean', 'zstd'], False)
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else:
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os.chdir(programs_dir)
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make(['zstd'], False)
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shutil.copy2('zstd', dst_zstd)
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# remove any remaining *.zst and *.dec from previous test
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os.chdir(tmp_dir)
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for compressed in glob.glob("*.zst"):
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os.remove(compressed)
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for dec in glob.glob("*.dec"):
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os.remove(dec)
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# copy *.c and *.h to a temporary directory ("dict_source")
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if not os.path.isdir(dict_source_path):
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os.mkdir(dict_source_path)
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print('cp ' + dict_files + ' ' + dict_source_path)
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execute('cp ' + dict_files + ' ' + dict_source_path, param_shell=True)
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print('Compress test.dat by all released zstd')
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error_code = 0
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for tag in tags:
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print(tag)
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if tag >= 'v0.5.0':
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create_dict(tag, dict_source_path)
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dict_compress_sample(tag, test_dat)
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remove_duplicates()
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error_code += decompress_dict(tag)
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compress_sample(tag, test_dat)
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remove_duplicates()
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error_code += decompress_zst(tag)
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print('')
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print('Enumerate different compressed files')
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zstds = sorted(glob.glob('*.zst'))
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for zstd in zstds:
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print(zstd + ' : ' + repr(os.path.getsize(zstd)) + ', ' + sha1_of_file(zstd))
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if error_code != 0:
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print('====== ERROR !!! =======')
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sys.exit(error_code)
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