mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-04 12:48:45 +00:00
eeb20775d2
This will help C++ code that uses exceptions to be tinier. For example, this change shaves away 1000 lines of assembly code from LLVM's libcxx, which is 0.7% of all assembly instructions in the entire library.
294 lines
12 KiB
C
294 lines
12 KiB
C
#ifndef COSMOPOLITAN_ZIP_H_
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#define COSMOPOLITAN_ZIP_H_
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/**
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* @fileoverview PKZIP Data Structures.
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*/
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#ifdef __ASSEMBLER__
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#define ZM_(x) x
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#else
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#define ZM_(x) ~__veil("r", ~x) /* prevent magic from appearing in binary */
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#endif
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#ifdef TINY
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#define _ZE(x) -1
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#else
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#define _ZE(x) x
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#endif
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#define kZipOk 0
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#define kZipErrorEocdNotFound _ZE(-1)
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#define kZipErrorEocdOffsetOverflow _ZE(-2)
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#define kZipErrorEocdMagicNotFound _ZE(-3)
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#define kZipErrorEocdSizeOverflow _ZE(-4)
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#define kZipErrorEocdDiskMismatch _ZE(-5)
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#define kZipErrorEocdOffsetSizeOverflow _ZE(-6)
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#define kZipErrorEocdRecordsMismatch _ZE(-7)
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#define kZipErrorEocdRecordsOverflow _ZE(-8)
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#define kZipErrorCdirOffsetPastEocd _ZE(-9)
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#define kZipErrorEocdLocatorMagic _ZE(-10)
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#define kZipErrorEocdLocatorOffset _ZE(-11)
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#define kZipErrorRaceCondition _ZE(-12)
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#define kZipErrorMapFailed _ZE(-13)
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#define kZipErrorOpenFailed _ZE(-14)
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#define kZipCosmopolitanVersion kZipEra2001
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#define kZipOsDos 0
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#define kZipOsAmiga 1
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#define kZipOsOpenvms 2
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#define kZipOsUnix 3
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#define kZipOsVmcms 4
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#define kZipOsAtarist 5
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#define kZipOsOs2hpfs 6
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#define kZipOsMacintosh 7
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#define kZipOsZsystem 8
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#define kZipOsCpm 9
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#define kZipOsWindowsntfs 10
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#define kZipOsMvsos390zos 11
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#define kZipOsVse 12
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#define kZipOsAcornrisc 13
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#define kZipOsVfat 14
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#define kZipOsAltmvs 15
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#define kZipOsBeos 16
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#define kZipOsTandem 17
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#define kZipOsOs400 18
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#define kZipOsOsxdarwin 19
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#define kZipEra1989 10 /* PKZIP 1.0 */
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#define kZipEra1993 20 /* PKZIP 2.0: deflate/subdir/etc. support */
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#define kZipEra2001 45 /* PKZIP 4.5: kZipExtraZip64 support */
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#define kZipIattrBinary 0 /* first bit not set */
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#define kZipIattrText 1 /* first bit set */
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#define kZipCompressionNone 0
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#define kZipCompressionDeflate 8
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#define kZipCdirHdrMagic ZM_(0x06054b50) /* PK♣♠ "PK\5\6" */
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#define kZipCdirHdrMagicTodo ZM_(0x19184b50) /* PK♣♠ "PK\30\31" */
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#define kZipCdirHdrMinSize 22
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#define kZipCdirHdrLinkableSize 294
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#define kZipCdirDiskOffset 4
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#define kZipCdirStartingDiskOffset 6
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#define kZipCdirRecordsOnDiskOffset 8
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#define kZipCdirRecordsOffset 10
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#define kZipCdirSizeOffset 12
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#define kZipCdirOffsetOffset 16
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#define kZipCdirCommentSizeOffset 20
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#define kZipCdir64HdrMagic ZM_(0x06064b50) /* PK♠♠ "PK\6\6" */
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#define kZipCdir64HdrMinSize 56
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#define kZipCdir64LocatorMagic ZM_(0x07064b50) /* PK♠• "PK\6\7" */
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#define kZipCdir64LocatorSize 20
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#define kZipCfileHdrMagic ZM_(0x02014b50) /* PK☺☻ "PK\1\2" */
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#define kZipCfileHdrMinSize 46
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#define kZipCfileOffsetVersionMadeBy 4
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#define kZipCfileOffsetVersionNeeded 6
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#define kZipCfileOffsetGeneralflag 8
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#define kZipCfileOffsetCompressionmethod 10
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#define kZipCfileOffsetLastmodifiedtime 12
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#define kZipCfileOffsetLastmodifieddate 14
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#define kZipCfileOffsetCrc32 16
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#define kZipCfileOffsetCompressedsize 20
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#define kZipCfileOffsetUncompressedsize 24
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#define kZipCfileOffsetNamesize 28
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#define kZipCfileOffsetExternalattributes 38
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#define kZipCfileOffsetOffset 42
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#define kZipLfileHdrMagic ZM_(0x04034b50) /* PK♥♦ "PK\3\4" */
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#define kZipLfileHdrMinSize 30
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#define kZipLfileOffsetVersionNeeded 4
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#define kZipLfileOffsetGeneralflag 6
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#define kZipLfileOffsetCompressionmethod 8
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#define kZipLfileOffsetLastmodifiedtime 10
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#define kZipLfileOffsetLastmodifieddate 12
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#define kZipLfileOffsetCrc32 14
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#define kZipLfileOffsetNamesize 26
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#define kZipLfileOffsetCompressedsize 18
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#define kZipLfileOffsetUncompressedsize 22
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#define kZipGflagUtf8 0x800
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#define kZipExtraHdrSize 4
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#define kZipExtraZip64 0x0001
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#define kZipExtraNtfs 0x000a
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#define kZipExtraUnix 0x000d
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#define kZipExtraExtendedTimestamp 0x5455
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#define kZipExtraInfoZipNewUnixExtra 0x7875
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#define kZipCfileMagic "PK\001\002"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define ZIP_SWAP16_(x) __builtin_bswap16(x)
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#define ZIP_SWAP32_(x) __builtin_bswap32(x)
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#define ZIP_SWAP64_(x) __builtin_bswap64(x)
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#else
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#define ZIP_SWAP16_(x) (x)
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#define ZIP_SWAP32_(x) (x)
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#define ZIP_SWAP64_(x) (x)
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#endif
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#define ZIP_READ16(P) \
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(__extension__({ \
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uint16_t __x; \
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__builtin_memcpy(&__x, P, 16 / 8); \
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ZIP_SWAP16_(__x); \
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}))
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#define ZIP_READ32(P) \
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(__extension__({ \
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uint32_t __x; \
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__builtin_memcpy(&__x, P, 32 / 8); \
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ZIP_SWAP32_(__x); \
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}))
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#define ZIP_READ64(P) \
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(__extension__({ \
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uint64_t __x; \
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__builtin_memcpy(&__x, P, 64 / 8); \
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ZIP_SWAP64_(__x); \
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}))
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#define ZIP_WRITE16(P, X) \
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(__extension__({ \
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__typeof__(&(P)[0]) __p = (P); \
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uint16_t __x = ZIP_SWAP16_(X); \
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__builtin_memcpy(__p, &__x, 16 / 8); \
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__p + 16 / 8; \
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}))
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#define ZIP_WRITE32(P, X) \
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(__extension__({ \
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__typeof__(&(P)[0]) __p = (P); \
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uint32_t __x = ZIP_SWAP32_(X); \
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__builtin_memcpy(__p, &__x, 32 / 8); \
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__p + 32 / 8; \
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}))
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#define ZIP_WRITE64(P, X) \
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(__extension__({ \
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__typeof__(&(P)[0]) __p = (P); \
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uint64_t __x = ZIP_SWAP64_(X); \
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__builtin_memcpy(__p, &__x, 64 / 8); \
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__p + 64 / 8; \
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}))
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/* end of central directory record */
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#define ZIP_CDIR_MAGIC(P) ZIP_READ32(P)
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#define ZIP_CDIR_DISK(P) ZIP_READ16((P) + kZipCdirDiskOffset)
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#define ZIP_CDIR_STARTINGDISK(P) ZIP_READ16((P) + kZipCdirStartingDiskOffset)
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#define ZIP_CDIR_RECORDSONDISK(P) ZIP_READ16((P) + kZipCdirRecordsOnDiskOffset)
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#define ZIP_CDIR_RECORDS(P) ZIP_READ16((P) + kZipCdirRecordsOffset)
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#define ZIP_CDIR_SIZE(P) ZIP_READ32((P) + kZipCdirSizeOffset)
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#define ZIP_CDIR_OFFSET(P) ZIP_READ32((P) + kZipCdirOffsetOffset)
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#define ZIP_CDIR_COMMENTSIZE(P) ZIP_READ16((P) + kZipCdirCommentSizeOffset)
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#define ZIP_CDIR_COMMENT(P) ((P) + 22) /* recommend stopping at nul */
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#define ZIP_CDIR_HDRSIZE(P) (ZIP_CDIR_COMMENTSIZE(P) + kZipCdirHdrMinSize)
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/* zip64 end of central directory record */
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#define ZIP_CDIR64_MAGIC(P) ZIP_READ32(P)
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#define ZIP_CDIR64_HDRSIZE(P) (ZIP_READ64((P) + 4) + 12)
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#define ZIP_CDIR64_VERSIONMADE(P) ZIP_READ16((P) + 12)
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#define ZIP_CDIR64_VERSIONNEED(P) ZIP_READ16((P) + 14)
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#define ZIP_CDIR64_DISK(P) ZIP_READ32((P) + 16)
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#define ZIP_CDIR64_STARTINGDISK(P) ZIP_READ32((P) + 20)
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#define ZIP_CDIR64_RECORDSONDISK(P) ZIP_READ64((P) + 24)
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#define ZIP_CDIR64_RECORDS(P) ZIP_READ64((P) + 32)
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#define ZIP_CDIR64_SIZE(P) ZIP_READ64((P) + 40)
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#define ZIP_CDIR64_OFFSET(P) ZIP_READ64((P) + 48)
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#define ZIP_CDIR64_COMMENTSIZE(P) \
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(ZIP_CDIR64_HDRSIZE(P) >= 56 ? ZIP_CDIR64_HDRSIZE(P) - 56 : 0)
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#define ZIP_CDIR64_COMMENT(P) ((P) + 56) /* recommend stopping at nul */
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#define ZIP_LOCATE64_MAGIC(P) ZIP_READ32(P)
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#define ZIP_LOCATE64_STARTINGDISK(P) ZIP_READ32((P) + 4)
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#define ZIP_LOCATE64_OFFSET(P) ZIP_READ64((P) + 8)
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#define ZIP_LOCATE64_TOTALDISKS(P) ZIP_READ32((P) + 12)
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/* central directory file header */
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#define ZIP_CFILE_MAGIC(P) ZIP_READ32(P)
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#define ZIP_CFILE_VERSIONMADE(P) (255 & (P)[4])
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#define ZIP_CFILE_FILEATTRCOMPAT(P) (255 & (P)[5])
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#define ZIP_CFILE_VERSIONNEED(P) (255 & (P)[6])
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#define ZIP_CFILE_OSNEED(P) (255 & (P)[7])
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#define ZIP_CFILE_GENERALFLAG(P) ZIP_READ16((P) + kZipCfileOffsetGeneralflag)
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#define ZIP_CFILE_COMPRESSIONMETHOD(P) \
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ZIP_READ16((P) + kZipCfileOffsetCompressionmethod)
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#define ZIP_CFILE_LASTMODIFIEDTIME(P) \
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ZIP_READ16((P) + kZipCfileOffsetLastmodifiedtime) /* @see DOS_TIME() */
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#define ZIP_CFILE_LASTMODIFIEDDATE(P) \
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ZIP_READ16((P) + kZipCfileOffsetLastmodifieddate) /* @see DOS_DATE() */
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#define ZIP_CFILE_CRC32(P) ZIP_READ32((P) + kZipCfileOffsetCrc32)
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#define ZIP_CFILE_COMPRESSEDSIZE(P) \
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ZIP_READ32(P + kZipCfileOffsetCompressedsize)
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#define ZIP_CFILE_UNCOMPRESSEDSIZE(P) \
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ZIP_READ32((P) + kZipCfileOffsetUncompressedsize)
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#define ZIP_CFILE_NAMESIZE(P) ZIP_READ16((P) + kZipCfileOffsetNamesize)
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#define ZIP_CFILE_EXTRASIZE(P) ZIP_READ16((P) + 30)
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#define ZIP_CFILE_COMMENTSIZE(P) ZIP_READ16((P) + 32)
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#define ZIP_CFILE_DISK(P) ZIP_READ16((P) + 34)
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#define ZIP_CFILE_INTERNALATTRIBUTES(P) ZIP_READ16((P) + 36)
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#define ZIP_CFILE_EXTERNALATTRIBUTES(P) \
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ZIP_READ32((P) + kZipCfileOffsetExternalattributes)
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#define ZIP_CFILE_OFFSET(P) ZIP_READ32((P) + kZipCfileOffsetOffset)
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#define ZIP_CFILE_NAME(P) ((const char *)((P) + 46)) /* not nul-terminated */
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#define ZIP_CFILE_EXTRA(P) ((P) + 46 + ZIP_CFILE_NAMESIZE(P))
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#define ZIP_CFILE_COMMENT(P) \
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((const char *)((P) + 46 + ZIP_CFILE_NAMESIZE(P) + \
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ZIP_CFILE_EXTRASIZE(P))) /* recommend stopping at nul */
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#define ZIP_CFILE_HDRSIZE(P) \
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(ZIP_CFILE_NAMESIZE(P) + ZIP_CFILE_EXTRASIZE(P) + ZIP_CFILE_COMMENTSIZE(P) + \
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kZipCfileHdrMinSize)
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/* local file header */
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#define ZIP_LFILE_MAGIC(P) ZIP_READ32(P)
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#define ZIP_LFILE_VERSIONNEED(P) (255 & (P)[4])
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#define ZIP_LFILE_OSNEED(P) (255 & (P)[5])
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#define ZIP_LFILE_GENERALFLAG(P) ZIP_READ16((P) + kZipLfileOffsetGeneralflag)
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#define ZIP_LFILE_COMPRESSIONMETHOD(P) \
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ZIP_READ16((P) + kZipLfileOffsetCompressionmethod)
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#define ZIP_LFILE_LASTMODIFIEDTIME(P) \
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ZIP_READ16((P) + kZipLfileOffsetLastmodifiedtime) /* @see DOS_TIME() */
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#define ZIP_LFILE_LASTMODIFIEDDATE(P) \
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ZIP_READ16((P) + kZipLfileOffsetLastmodifieddate) /* @see DOS_DATE() */
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#define ZIP_LFILE_CRC32(P) ZIP_READ32((P) + kZipLfileOffsetCrc32)
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#define ZIP_LFILE_COMPRESSEDSIZE(P) \
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ZIP_READ32((P) + kZipLfileOffsetCompressedsize)
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#define ZIP_LFILE_UNCOMPRESSEDSIZE(P) \
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ZIP_READ32((P) + kZipLfileOffsetUncompressedsize)
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#define ZIP_LFILE_NAMESIZE(P) ZIP_READ16((P) + kZipLfileOffsetNamesize)
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#define ZIP_LFILE_EXTRASIZE(P) ZIP_READ16((P) + 28)
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#define ZIP_LFILE_NAME(P) ((const char *)((P) + 30))
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#define ZIP_LFILE_EXTRA(P) ((P) + 30 + ZIP_LFILE_NAMESIZE(P))
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#define ZIP_LFILE_HDRSIZE(P) \
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(ZIP_LFILE_NAMESIZE(P) + ZIP_LFILE_EXTRASIZE(P) + kZipLfileHdrMinSize)
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#define ZIP_LFILE_CONTENT(P) ((P) + ZIP_LFILE_HDRSIZE(P))
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#define ZIP_LFILE_SIZE(P) (ZIP_LFILE_HDRSIZE(P) + ZIP_LFILE_COMPRESSEDSIZE(P))
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#define ZIP_EXTRA_HEADERID(P) ZIP_READ16(P)
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#define ZIP_EXTRA_CONTENTSIZE(P) ZIP_READ16((P) + 2)
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#define ZIP_EXTRA_CONTENT(P) ((P) + 4)
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#define ZIP_EXTRA_SIZE(P) (ZIP_EXTRA_CONTENTSIZE(P) + kZipExtraHdrSize)
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void *GetZipEocd(const void *, size_t, int *) libcesque;
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int IsZipEocd32(const uint8_t *, size_t, size_t) libcesque;
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int IsZipEocd64(const uint8_t *, size_t, size_t) libcesque;
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int GetZipCfileMode(const uint8_t *) libcesque;
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uint64_t GetZipCdirOffset(const uint8_t *) libcesque;
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uint64_t GetZipCdirRecords(const uint8_t *) libcesque;
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const void *GetZipCdirComment(const uint8_t *) libcesque;
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uint64_t GetZipCdirSize(const uint8_t *) libcesque;
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uint64_t GetZipCdirCommentSize(const uint8_t *) libcesque;
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int64_t GetZipCfileCompressedSize(const uint8_t *) libcesque;
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int64_t GetZipCfileUncompressedSize(const uint8_t *) libcesque;
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int64_t GetZipCfileOffset(const uint8_t *) libcesque;
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int64_t GetZipLfileCompressedSize(const uint8_t *) libcesque;
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int64_t GetZipLfileUncompressedSize(const uint8_t *) libcesque;
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struct timespec;
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void GetZipCfileTimestamps(const uint8_t *, struct timespec *,
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struct timespec *, struct timespec *, int) libcesque;
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_ZIP_H_ */
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