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Add config variables pack.compression and core.loosecompression , and switch --compression=level to pack-objects. Loose objects will be compressed using core.loosecompression if set, else core.compression if set, else Z_BEST_SPEED. Packed objects will be compressed using --compression=level if seen, else pack.compression if set, else core.compression if set, else Z_DEFAULT_COMPRESSION. This is the "pack compression level". Loose objects added to a pack undeltified will be recompressed to the pack compression level if it is unequal to the current loose compression level by the preceding rules, or if the loose object was written while core.legacyheaders = true. Newly deltified loose objects are always compressed to the current pack compression level. Previously packed objects added to a pack are recompressed to the current pack compression level exactly when their deltification status changes, since the previous pack data cannot be reused. In either case, the --no-reuse-object switch from the first patch below will always force recompression to the current pack compression level, instead of assuming the pack compression level hasn't changed and pack data can be reused when possible. This applies on top of the following patches from Nicolas Pitre: [PATCH] allow for undeltified objects not to be reused [PATCH] make "repack -f" imply "pack-objects --no-reuse-object" Signed-off-by: Dana L. How <danahow@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
24 lines
691 B
C
24 lines
691 B
C
#ifndef CSUM_FILE_H
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#define CSUM_FILE_H
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/* A SHA1-protected file */
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struct sha1file {
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int fd, error;
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unsigned int offset, namelen;
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SHA_CTX ctx;
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char name[PATH_MAX];
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int do_crc;
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uint32_t crc32;
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unsigned char buffer[8192];
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};
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extern struct sha1file *sha1fd(int fd, const char *name);
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extern struct sha1file *sha1create(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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extern int sha1close(struct sha1file *, unsigned char *, int);
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extern int sha1write(struct sha1file *, void *, unsigned int);
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extern int sha1write_compressed(struct sha1file *, void *, unsigned int, int);
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extern void crc32_begin(struct sha1file *);
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extern uint32_t crc32_end(struct sha1file *);
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#endif
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