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Commit | Line | Data |
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92747a90 | 1 | /* |
ae64bbc1 | 2 | * Copyright (c) 2005, 2006 Rene Scharfe |
92747a90 | 3 | */ |
731ab9cc | 4 | #include "cache.h" |
c3f92812 | 5 | #include "commit.h" |
ae64bbc1 | 6 | #include "tar.h" |
56d1398a | 7 | #include "builtin.h" |
fd88d9c8 | 8 | #include "quote.h" |
731ab9cc | 9 | |
e9dd085d | 10 | static const char builtin_get_tar_commit_id_usage[] = |
33e8fc87 | 11 | "git get-tar-commit-id"; |
e9dd085d | 12 | |
52ba03cb | 13 | /* ustar header + extended global header content */ |
fd88d9c8 | 14 | #define RECORDSIZE (512) |
52ba03cb RS |
15 | #define HEADERSIZE (2 * RECORDSIZE) |
16 | ||
a633fca0 | 17 | int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix) |
52ba03cb RS |
18 | { |
19 | char buffer[HEADERSIZE]; | |
20 | struct ustar_header *header = (struct ustar_header *)buffer; | |
21 | char *content = buffer + RECORDSIZE; | |
e3f1da98 | 22 | const char *comment; |
52ba03cb RS |
23 | ssize_t n; |
24 | ||
e9dd085d JN |
25 | if (argc != 1) |
26 | usage(builtin_get_tar_commit_id_usage); | |
27 | ||
93d26e4c | 28 | n = read_in_full(0, buffer, HEADERSIZE); |
52ba03cb | 29 | if (n < HEADERSIZE) |
7e44c935 | 30 | die("git get-tar-commit-id: read error"); |
52ba03cb RS |
31 | if (header->typeflag[0] != 'g') |
32 | return 1; | |
e3f1da98 | 33 | if (!skip_prefix(content, "52 comment=", &comment)) |
52ba03cb RS |
34 | return 1; |
35 | ||
68a423ab | 36 | if (write_in_full(1, comment, 41) < 0) |
0721c314 | 37 | die_errno("git get-tar-commit-id: write error"); |
52ba03cb RS |
38 | |
39 | return 0; | |
40 | } |