thodg/libgit2/src/odb.h
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Hash : 89217d8f
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Date : 2010-04-28T20:20:00
Add functions to open a '*.pack' file and perform some basic validation Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
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src/odb.h
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#ifndef INCLUDE_odb_h__ #define INCLUDE_odb_h__ /** First 4 bytes of a pack-*.idx file header. * * Note this header exists only in idx v2 and later. The idx v1 * file format does not have a magic sequence at the front, and * must be detected by the first four bytes *not* being this value * and the first 8 bytes matching the following expression: * * uint32_t *fanout = ... the file data at offset 0 ... * ntohl(fanout[0]) < ntohl(fanout[1]) * * The value chosen here for PACK_TOC is such that the above * cannot be true for an idx v1 file. */ #define PACK_TOC 0xff744f63 /* -1tOc */ /** First 4 bytes of a pack-*.pack file header. */ #define PACK_SIG 0x5041434b /* PACK */ #endif