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Constants

Compression methods

  • LIBZIP_CM_DEFAULT (-1): Similar to Deflate.
  • LIBZIP_CM_STORE (0): Store the file uncompressed.
  • LIBZIP_CM_SHRINK (1): Shrunk.
  • LIBZIP_CM_REDUCE_1 (2): Reduced with factor 1.
  • LIBZIP_CM_REDUCE_2 (3): Reduced with factor 2.
  • LIBZIP_CM_REDUCE_3 (4): Reduced with factor 3.
  • LIBZIP_CM_REDUCE_4 (5): Reduced with factor 4.
  • LIBZIP_CM_IMPLODE (6): Imploded.
  • LIBZIP_CM_DEFLATE (8): Deflated.
  • LIBZIP_CM_DEFLATE64 (9): Deflate64.
  • LIBZIP_CM_PKWARE_IMPLODE (10): PKWARE imploding.
  • LIBZIP_CM_BZIP2 (12): Compressed using BZIP2 algorithm
  • LIBZIP_CM_LZMA (14): LZMA (EFS).
  • LIBZIP_CM_TERSE (18): Compressed using IBM TERSE (new).
  • LIBZIP_CM_LZ77 (19): IBM LZ77 z Architecture (PFS).
  • LIBZIP_CM_LZMA2 (33)
  • LIBZIP_CM_ZSTD (93): ZSTD compressed data.
  • LIBZIP_CM_XZ (95): XZ compressed data.
  • LIBZIP_CM_JPEG (96): Compressed Jpeg data.
  • LIBZIP_CM_WAVPACK (97): WavPack compressed data.
  • LIBZIP_CM_PPMD (98): PPMd version I, Rev 1.

Encryption methods

LIBZIP_EM_NONE (0): Not encrypted LIBZIP_EM_TRAD_PKWARE (1): Traditional PKWARE encryption LIBZIP_EM_AES_128 (257): Winzip AES-128 encryption. LIBZIP_EM_AES_192 (258): Winzip AES-192 encryption. LIBZIP_EM_AES_256 (259): Winzip AES-256 encryption.

Open flags

  • LIBZIP_CREATE (1): Create the archive if it does not exist.
  • LIBZIP_EXCL (2): Error if archive already exists.
  • LIBZIP_CHECKCONS (4): Perform additional stricter consistency checks on the archive, and error if they fail.
  • LIBZIP_TRUNCATE (8): If archive exists, ignore its current contents. In other words, handle it the same way as an empty archive.
  • LIBZIP_RDONLY (16): Open archive in read-only mode.

File info flags

  • LIBZIP_FL_ENC_GUESS (0): Guess encoding of name (default). (Only CP-437 and UTF-8 are recognized).
  • LIBZIP_FL_NOCASE (1): Ignore case distinctions. (Will only work well if the file names are ASCII.) With this flag, zipnamelocate() will be slow for archives with many files.
  • LIBZIP_FL_NODIR (2): Ignore directory part of file name in archive. With this flag, zipnamelocate() will be slow for archives with many files.
  • LIBZIP_FL_ENC_RAW (64): Compare fname against the unmodified names as they are in the ZIP archive, without converting them to UTF-8.
  • LIBZIP_FL_ENC_STRICT (128): Follow the ZIP specification and expect CP-437 encoded names in the ZIP archive (except if they are explicitly marked as UTF-8). Convert them to UTF-8 before comparing.
  • LIBZIP_FL_ENC_UTF_8 (2048): Interpret name as UTF-8.
  • LIBZIP_FL_ENC_CP437 (4096): Interpret name as code page 437 (CP-437).

Read file flags

  • LIBZIP_FL_COMPRESSED (4): Read compressed data.
  • LIBZIP_FL_UNCHANGED (8): Use original data, ignoring changes.

Add file flags

  • LIBZIP_FL_ENC_GUESS (0): Guess encoding of name (default). (Only CP-437 and UTF-8 are recognized).
  • LIBZIP_FL_ENC_UTF_8 (2048): Interpret name as UTF-8.
  • LIBZIP_FL_ENC_CP437 (4096): Interpret name as code page 437 (CP-437).
  • LIBZIP_FL_OVERWRITE (8192): If file with name exists, overwrite (replace) it.