compression.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 '''
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the Revised BSD License.
   7
   8     This program is distributed in the hope that it will be useful,
   9     but WITHOUT ANY WARRANTY; without even the implied warranty of
  10     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11     Revised BSD License for more details.
  12
  13     Copyright 2018-2024 Cool Dude 2k - http://idb.berlios.de/
  14     Copyright 2018-2024 Game Maker 2k - http://intdb.sourceforge.net/
  15     Copyright 2018-2024 Kazuki Przyborowski - https://github.com/KazukiPrzyborowski
  16
  17     $FileInfo: compression.py - Last Update: 3/29/2024 Ver. 0.7.0 RC 1 - Author: cooldude2k $
  18 '''
  19
  20 from __future__ import absolute_import, division, print_function, unicode_literals;
  21 import os, binascii, argparse, shutil;
  22 from io import open as open;
  23
  24 def CompressionSupport():
  25  compression_list = [];
  26  try:
  27   import gzip;
  28   compression_list.append("gz");
  29   compression_list.append("gzip");
  30  except ImportError:
  31   '''return False;'''
  32  try:
  33   import bz2;
  34   compression_list.append("bz2");
  35   compression_list.append("bzip2");
  36  except ImportError:
  37   '''return False;'''
  38  try:
  39   import lz4;
  40   compression_list.append("lz4");
  41  except ImportError:
  42   '''return False;'''
  43  try:
  44   import lzo;
  45   compression_list.append("lzo");
  46   compression_list.append("lzop");
  47  except ImportError:
  48   '''return False;'''
  49  try:
  50   import zstandard;
  51   compression_list.append("zstd");
  52   compression_list.append("zstandard");
  53  except ImportError:
  54   '''return False;'''
  55  try:
  56   import lzma;
  57   compression_list.append("lzma");
  58   compression_list.append("xz");
  59  except ImportError:
  60   '''return False;'''
  61  return compression_list;
  62
  63 def CheckCompressionType(infile, closefp=True):
  64  if(hasattr(infile, "read") or hasattr(infile, "write")):
  65   ckcomfp = infile;
  66  else:
  67   ckcomfp = open(infile, "rb");
  68  ckcomfp.seek(0, 0);
  69  prefp = ckcomfp.read(2);
  70  filetype = False;
  71  if(prefp==binascii.unhexlify("1f8b")):
  72   filetype = "gzip";
  73  ckcomfp.seek(0, 0);
  74  prefp = ckcomfp.read(3);
  75  if(prefp==binascii.unhexlify("425a68")):
  76   filetype = "bzip2";
  77  ckcomfp.seek(0, 0);
  78  prefp = ckcomfp.read(4);
  79  if(prefp==binascii.unhexlify("28b52ffd")):
  80   filetype = "zstd";
  81  if(prefp==binascii.unhexlify("04224d18")):
  82   filetype = "lz4";
  83  ckcomfp.seek(0, 0);
  84  prefp = ckcomfp.read(7);
  85  if(prefp==binascii.unhexlify("fd377a585a0000")):
  86   filetype = "lzma";
  87  ckcomfp.seek(0, 0);
  88  prefp = ckcomfp.read(9);
  89  if(prefp==binascii.unhexlify("894c5a4f000d0a1a0a")):
  90   filetype = "lzo";
  91  ckcomfp.seek(0, 0);
  92  if(closefp):
  93   ckcomfp.close();
  94  return filetype;
  95
  96 def gzip_file(infile, outfile, level=9, keepfile=True):
  97  support_list = CompressionSupport();
  98  if(not os.path.exists(infile) or not os.path.isfile(infile)):
  99   return False;
 100  if(os.path.exists(outfile)):
 101   return False;
 102  if("gzip" not in support_list):
 103   return False;
 104  import gzip;
 105  ucfilefp = open(infile, "rb");
 106  cfilefp = gzip.open(outfile, "wb", level);
 107  shutil.copyfileobj(ucfilefp, cfilefp);
 108  cfilefp.close();
 109  ucfilefp.close();
 110  if(CheckCompressionType(outfile)!="gzip"):
 111   os.remove(outfile);
 112   return False;
 113  if(not keepfile):
 114   os.remove(infile);
 115  return True;
 116
 117 def gunzip_file(infile, outfile, keepfile=True):
 118  support_list = CompressionSupport();
 119  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 120   return False;
 121  if(os.path.exists(outfile)):
 122   return False;
 123  if("gzip" not in support_list):
 124   return False;
 125  if(CheckCompressionType(infile)!="gzip"):
 126   return False;
 127  import gzip;
 128  ucfilefp = open(outfile, "wb");
 129  cfilefp = gzip.open(infile, "rb");
 130  shutil.copyfileobj(cfilefp, ucfilefp);
 131  cfilefp.close();
 132  ucfilefp.close();
 133  if(not keepfile):
 134   os.remove(infile);
 135  return True;
 136
 137 def bzip2_file(infile, outfile, level=9, keepfile=True):
 138  support_list = CompressionSupport();
 139  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 140   return False;
 141  if(os.path.exists(outfile)):
 142   return False;
 143  if("bzip2" not in support_list):
 144   return False;
 145  import bz2;
 146  ucfilefp = open(infile, "rb");
 147  cfilefp = bz2.BZ2File(outfile, "wb", compresslevel=level);
 148  shutil.copyfileobj(ucfilefp, cfilefp);
 149  cfilefp.close();
 150  ucfilefp.close();
 151  if(CheckCompressionType(outfile)!="bzip2"):
 152   os.remove(outfile);
 153   return False;
 154  if(not keepfile):
 155   os.remove(infile);
 156  return True;
 157
 158 def bunzip2_file(infile, outfile, keepfile=True):
 159  support_list = CompressionSupport();
 160  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 161   return False;
 162  if(os.path.exists(outfile)):
 163   return False;
 164  if("bzip2" not in support_list):
 165   return False;
 166  if(CheckCompressionType(infile)!="bzip2"):
 167   return False;
 168  import bz2;
 169  ucfilefp = open(outfile, "wb");
 170  cfilefp = bz2.BZ2File(infile, "rb");
 171  shutil.copyfileobj(cfilefp, ucfilefp);
 172  cfilefp.close();
 173  ucfilefp.close();
 174  if(not keepfile):
 175   os.remove(infile);
 176  return True;
 177
 178 def zstd_file(infile, outfile, level=9, keepfile=True):
 179  support_list = CompressionSupport();
 180  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 181   return False;
 182  if(os.path.exists(outfile)):
 183   return False;
 184  if("zstd" not in support_list):
 185   return False;
 186  import zstandard;
 187  ucfilefp = open(infile, "rb");
 188  cfilefp = zstandard.open(outfile, "wb", zstandard.ZstdCompressor(level=level));
 189  shutil.copyfileobj(ucfilefp, cfilefp);
 190  cfilefp.close();
 191  ucfilefp.close();
 192  if(CheckCompressionType(outfile)!="zstd"):
 193   os.remove(outfile);
 194   return False;
 195  if(not keepfile):
 196   os.remove(infile);
 197  return True;
 198
 199 def unzstd_file(infile, outfile, keepfile=True):
 200  support_list = CompressionSupport();
 201  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 202   return False;
 203  if(os.path.exists(outfile)):
 204   return False;
 205  if("zstd" not in support_list):
 206   return False;
 207  if(CheckCompressionType(infile)!="zstd"):
 208   return False;
 209  import zstandard;
 210  ucfilefp = open(outfile, "wb");
 211  cfilefp = zstandard.open(infile, "rb");
 212  shutil.copyfileobj(cfilefp, ucfilefp);
 213  cfilefp.close();
 214  ucfilefp.close();
 215  if(not keepfile):
 216   os.remove(infile);
 217  return True;
 218
 219 def lz4_file(infile, outfile, level=9, keepfile=True):
 220  support_list = CompressionSupport();
 221  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 222   return False;
 223  if(os.path.exists(outfile)):
 224   return False;
 225  if("lz4" not in support_list):
 226   return False;
 227  import lz4;
 228  ucfilefp = open(infile, "rb");
 229  cfilefp = lz4.frame.open(outfile, "wb", compression_level=level);
 230  shutil.copyfileobj(ucfilefp, cfilefp);
 231  cfilefp.close();
 232  ucfilefp.close();
 233  if(CheckCompressionType(outfile)!="lz4"):
 234   os.remove(outfile);
 235   return False;
 236  if(not keepfile):
 237   os.remove(infile);
 238  return True;
 239
 240 def unlz4_file(infile, outfile, keepfile=True):
 241  support_list = CompressionSupport();
 242  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 243   return False;
 244  if(os.path.exists(outfile)):
 245   return False;
 246  if("lz4" not in support_list):
 247   return False;
 248  if(CheckCompressionType(infile)!="lz4"):
 249   return False;
 250  import lz4;
 251  ucfilefp = open(outfile, "wb");
 252  cfilefp = lz4.frame.open(infile, "rb");
 253  shutil.copyfileobj(cfilefp, ucfilefp);
 254  cfilefp.close();
 255  ucfilefp.close();
 256  if(not keepfile):
 257   os.remove(infile);
 258  return True;
 259
 260 def lzo_file(infile, outfile, level=9, keepfile=True):
 261  support_list = CompressionSupport();
 262  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 263   return False;
 264  if(os.path.exists(outfile)):
 265   return False;
 266  if("lzo" not in support_list):
 267   return False;
 268  import lzo;
 269  ucfilefp = open(infile, "rb");
 270  cfilefp = open(outfile, "wb");
 271  cfilefp.write(lzo.compress(ucfilefp.read(), level));
 272  cfilefp.close();
 273  ucfilefp.close();
 274  if(CheckCompressionType(outfile)!="lzo"):
 275   os.remove(outfile);
 276   return False;
 277  if(not keepfile):
 278   os.remove(infile);
 279  return True;
 280
 281 def unlzo_file(infile, outfile, keepfile=True):
 282  support_list = CompressionSupport();
 283  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 284   return False;
 285  if(os.path.exists(outfile)):
 286   return False;
 287  if("lzo" not in support_list):
 288   return False;
 289  if(CheckCompressionType(infile)!="lzo"):
 290   return False;
 291  import lzo;
 292  ucfilefp = open(outfile, "wb");
 293  cfilefp = open(infile, "rb");
 294  ucfilefp.write(lzo.decompress(cfilefp.read()));
 295  cfilefp.close();
 296  ucfilefp.close();
 297  if(not keepfile):
 298   os.remove(infile);
 299  return True;
 300
 301 def lzma_file(infile, outfile, level=9, keepfile=True):
 302  support_list = CompressionSupport();
 303  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 304   return False;
 305  if(os.path.exists(outfile)):
 306   return False;
 307  if("lzma" not in support_list):
 308   return False;
 309  import lzma;
 310  ucfilefp = open(infile, "rb");
 311  cfilefp = lzma.open(outfile, "wb", format=lzma.FORMAT_ALONE, preset=level);
 312  shutil.copyfileobj(ucfilefp, cfilefp);
 313  cfilefp.close();
 314  ucfilefp.close();
 315  if(CheckCompressionType(outfile)!="lzma"):
 316   os.remove(outfile);
 317   return False;
 318  if(not keepfile):
 319   os.remove(infile);
 320  return True;
 321
 322 def unlzma_file(infile, outfile, keepfile=True):
 323  support_list = CompressionSupport();
 324  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 325   return False;
 326  if(os.path.exists(outfile)):
 327   return False;
 328  if("lzma" not in support_list):
 329   return False;
 330  if(CheckCompressionType(infile)!="lzma"):
 331   return False;
 332  import lzma;
 333  ucfilefp = open(outfile, "wb");
 334  cfilefp = lzma.open(infile, "rb", format=lzma.FORMAT_ALONE);
 335  shutil.copyfileobj(cfilefp, ucfilefp);
 336  cfilefp.close();
 337  ucfilefp.close();
 338  if(not keepfile):
 339   os.remove(infile);
 340  return True;
 341
 342 def xz_file(infile, outfile, level=9, keepfile=True):
 343  support_list = CompressionSupport();
 344  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 345   return False;
 346  if(os.path.exists(outfile)):
 347   return False;
 348  if("xz" not in support_list):
 349   return False;
 350  import lzma;
 351  ucfilefp = open(infile, "rb");
 352  cfilefp = lzma.open(outfile, "wb", format=lzma.FORMAT_XZ, preset=level);
 353  shutil.copyfileobj(ucfilefp, cfilefp);
 354  cfilefp.close();
 355  ucfilefp.close();
 356  if(CheckCompressionType(outfile)!="xz"):
 357   os.remove(outfile);
 358   return False;
 359  if(not keepfile):
 360   os.remove(infile);
 361  return True;
 362
 363 def unxz_file(infile, outfile, keepfile=True):
 364  support_list = CompressionSupport();
 365  if(not os.path.exists(infile) or not os.path.isfile(infile)):
 366   return False;
 367  if(os.path.exists(outfile)):
 368   return False;
 369  if("xz" not in support_list):
 370   return False;
 371  if(CheckCompressionType(infile)!="xz"):
 372   return False;
 373  import lzma;
 374  ucfilefp = open(outfile, "wb");
 375  cfilefp = lzma.open(infile, "rb", format=lzma.FORMAT_XZ);
 376  shutil.copyfileobj(cfilefp, ucfilefp);
 377  cfilefp.close();
 378  ucfilefp.close();
 379  if(not keepfile):
 380   os.remove(infile);
 381  return True;
 382
 383 if __name__ == "__main__":
 384  argparser = argparse.ArgumentParser(description="Compress Files", conflict_handler="resolve", add_help=True);
 385  argparser.add_argument("-V", "--version", action="version", version="PyCompress 0.0.1");
 386  argparser.add_argument("-c", "--compress", action="store_true", help="Compress file");
 387  argparser.add_argument("-d", "--decompress", action="store_true", help="Decompress file");
 388  argparser.add_argument("-i", "-f", "--input", help="Files to compress/decompress", required=True);
 389  argparser.add_argument("-o", "--output", help="Output file after compress/decompress", required=True);
 390  argparser.add_argument("-k", "--keep", action="store_false", help="Keep input file");
 391  argparser.add_argument("-l", "--level", default="1", help="Compression level");
 392  argparser.add_argument("-compression", "--compression", default="auto", help="File compression to use for compress/decompress");
 393  getargs = argparser.parse_args();
 394  chkcompression = CompressionSupport();
 395  if(getargs.compression not in chkcompression):
 396   exit();
 397  if(not getargs.compress and not getargs.decompress):
 398   exit();
 399  if(getargs.compress and getargs.decompress):
 400   exit();
 401  if(getargs.compress and not getargs.decompress):
 402   if(getargs.compression=="gzip" and "gzip" in chkcompression):
 403    gzip_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 404   if(getargs.compression=="bzip2" and "bzip2" in chkcompression):
 405    bzip2_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 406   if(getargs.compression=="zstd" and "zstd" in chkcompression):
 407    zstd_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 408   if(getargs.compression=="lz4" and "lz4" in chkcompression):
 409    lz4_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 410   if(getargs.compression=="lzo" and "lzo" in chkcompression):
 411    lzo_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 412   if(getargs.compression=="lzma" and "lzma" in chkcompression):
 413    lzma_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 414   if(getargs.compression=="xz" and "xz" in chkcompression):
 415    xz_file(getargs.input, getargs.output, int(getargs.level), getargs.keep);
 416   exit();
 417  if(not getargs.compress and getargs.decompress):
 418   if(getargs.compression=="gzip" and "gzip" in chkcompression):
 419    gunzip_file(getargs.input, getargs.output, getargs.keep);
 420   if(getargs.compression=="bzip2" and "bzip2" in chkcompression):
 421    bunzip2_file(getargs.input, getargs.output, getargs.keep);
 422   if(getargs.compression=="zstd" and "zstd" in chkcompression):
 423    unzstd_file(getargs.input, getargs.output, getargs.keep);
 424   if(getargs.compression=="lz4" and "lz4" in chkcompression):
 425    unlz4_file(getargs.input, getargs.output, getargs.keep);
 426   if(getargs.compression=="lzo" and "lzo" in chkcompression):
 427    unlzo_file(getargs.input, getargs.output, getargs.keep);
 428   if(getargs.compression=="lzma" and "lzma" in chkcompression):
 429    unlzma_file(getargs.input, getargs.output, getargs.keep);
 430   if(getargs.compression=="xz" and "xz" in chkcompression):
 431    unxz_file(getargs.input, getargs.output, getargs.keep);
 432   exit();