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author | Paul Sherwood <paul.sherwood@codethink.co.uk> | 2014-04-29 20:37:28 +0000 |
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committer | Paul Sherwood <paul.sherwood@codethink.co.uk> | 2014-04-29 20:37:28 +0000 |
commit | e98c205a5c3fb893ffdda3f5e05d1967b4a79c1d (patch) | |
tree | 3ecbd4f05ab9601cefa7b322323039795db440a9 /builtin/get-tar-commit-id.c | |
parent | 43efcf42382e87de4aa423e5e1607958ad1717d0 (diff) | |
parent | 0bc85abb7aa9b24b093253018801a0fb43d01122 (diff) | |
download | git-baserock/ps/update-git.tar.gz |
Merge tag 'v1.9.2' into HEADbaserock/ps/update-git
Git 1.9.2
Diffstat (limited to 'builtin/get-tar-commit-id.c')
-rw-r--r-- | builtin/get-tar-commit-id.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/builtin/get-tar-commit-id.c b/builtin/get-tar-commit-id.c new file mode 100644 index 0000000000..aa72596083 --- /dev/null +++ b/builtin/get-tar-commit-id.c @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2005, 2006 Rene Scharfe + */ +#include "cache.h" +#include "commit.h" +#include "tar.h" +#include "builtin.h" +#include "quote.h" + +static const char builtin_get_tar_commit_id_usage[] = +"git get-tar-commit-id < <tarfile>"; + +/* ustar header + extended global header content */ +#define RECORDSIZE (512) +#define HEADERSIZE (2 * RECORDSIZE) + +int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix) +{ + char buffer[HEADERSIZE]; + struct ustar_header *header = (struct ustar_header *)buffer; + char *content = buffer + RECORDSIZE; + ssize_t n; + + if (argc != 1) + usage(builtin_get_tar_commit_id_usage); + + n = read_in_full(0, buffer, HEADERSIZE); + if (n < HEADERSIZE) + die("git get-tar-commit-id: read error"); + if (header->typeflag[0] != 'g') + return 1; + if (memcmp(content, "52 comment=", 11)) + return 1; + + n = write_in_full(1, content + 11, 41); + if (n < 41) + die_errno("git get-tar-commit-id: write error"); + + return 0; +} |