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2020-05-27builtin/show-index: provide options to determine hash algoLibravatar brian m. carlson1-5/+24
show-index is capable of reading any possible index file whether or not the index is inside a repository. However, because our index files lack metadata about the hash algorithm in use, it's not possible to autodetect the algorithm that a particular index file is using. In order to allow us to read index files of any algorithm, let's set up the .git directory gently so that we default to the algorithm for the current repository, and add an --object-format option to allow users to override this setting and continue to run show-index outside of a repository altogether. Let's also document this new option so that people can find it and use it. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-19builtin/show-index: replace sha1_to_hexLibravatar brian m. carlson1-1/+1
In this code path, we use sha1_to_hex to display the contents of a v1 pack index. While we plan to switch to v3 indices for SHA-256, the v1 pack indices still function, so to support both algorithms, switch sha1_to_hex to hash_to_hex. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-19show-index: switch hard-coded constants to the_hash_algoLibravatar brian m. carlson1-5/+6
show-index uses a variety of hard-coded constants to enumerate the values in pack indices. Switch these hard-coded constants to use the_hash_algo or GIT_MAX_RAWSZ, as appropriate, and convert one instance of an unsigned char array to struct object_id. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-29make show-index a builtinLibravatar Jeff King1-0/+86
The git-show-index command is built as its own separate program. There's really no good reason for this, and it means we waste extra space on disk (and CPU time running the linker). Let's fold it in to the main binary as a builtin. The history here is actually a bit amusing. The program itself is mostly self-contained, and doesn't even use our normal pack index code. In a5031214c4 (slim down "git show-index", 2010-01-21), we even stopped using xmalloc() so that it could avoid libgit.a entirely. But then 040a655116 (cleanup: use internal memory allocation wrapper functions everywhere, 2011-10-06) switched that back to xmalloc, which later become ALLOC_ARRAY(). Making it a builtin should give us the best of both worlds: no wasted space and no need to avoid the usual patterns. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>