| 1 | /* |
| 2 | * GIT - The information manager from hell |
| 3 | * |
| 4 | * Copyright (C) Linus Torvalds, 2005 |
| 5 | * Copyright (C) Junio C Hamano, 2005 |
| 6 | */ |
| 7 | #define USE_THE_REPOSITORY_VARIABLE |
| 8 | #include "builtin.h" |
| 9 | #include "abspath.h" |
| 10 | #include "config.h" |
| 11 | #include "environment.h" |
| 12 | #include "gettext.h" |
| 13 | #include "hex.h" |
| 14 | #include "object-file.h" |
| 15 | #include "odb.h" |
| 16 | #include "blob.h" |
| 17 | #include "quote.h" |
| 18 | #include "parse-options.h" |
| 19 | #include "setup.h" |
| 20 | #include "strbuf.h" |
| 21 | #include "write-or-die.h" |
| 22 | |
| 23 | static void hash_fd(int fd, const char *type, const char *path, unsigned flags) |
| 24 | { |
| 25 | struct stat st; |
| 26 | struct object_id oid; |
| 27 | |
| 28 | if (fstat(fd, &st) < 0 || |
| 29 | index_fd(the_repository->index, &oid, fd, &st, |
| 30 | type_from_string(type), path, flags)) |
| 31 | die((flags & INDEX_WRITE_OBJECT) |
| 32 | ? "Unable to add %s to database" |
| 33 | : "Unable to hash %s", path); |
| 34 | printf("%s\n", oid_to_hex(&oid)); |
| 35 | maybe_flush_or_die(stdout, "hash to stdout"); |
| 36 | } |
| 37 | |
| 38 | static void hash_object(const char *path, const char *type, const char *vpath, |
| 39 | unsigned flags) |
| 40 | { |
| 41 | int fd; |
| 42 | fd = xopen(path, O_RDONLY); |
| 43 | hash_fd(fd, type, vpath, flags); |
| 44 | } |
| 45 | |
| 46 | static void hash_stdin_paths(const char *type, int no_filters, unsigned flags) |
| 47 | { |
| 48 | struct strbuf buf = STRBUF_INIT; |
| 49 | struct strbuf unquoted = STRBUF_INIT; |
| 50 | |
| 51 | while (strbuf_getline(&buf, stdin) != EOF) { |
| 52 | if (buf.buf[0] == '"') { |
| 53 | strbuf_reset(&unquoted); |
| 54 | if (unquote_c_style(&unquoted, buf.buf, NULL)) |
| 55 | die("line is badly quoted"); |
| 56 | strbuf_swap(&buf, &unquoted); |
| 57 | } |
| 58 | hash_object(buf.buf, type, no_filters ? NULL : buf.buf, flags); |
| 59 | } |
| 60 | strbuf_release(&buf); |
| 61 | strbuf_release(&unquoted); |
| 62 | } |
| 63 | |
| 64 | int cmd_hash_object(int argc, |
| 65 | const char **argv, |
| 66 | const char *prefix, |
| 67 | struct repository *repo UNUSED) |
| 68 | { |
| 69 | static const char * const hash_object_usage[] = { |
| 70 | N_("git hash-object [-t <type>] [-w] [--path=<file> | --no-filters]\n" |
| 71 | " [--stdin [--literally]] [--] <file>..."), |
| 72 | N_("git hash-object [-t <type>] [-w] --stdin-paths [--no-filters]"), |
| 73 | NULL |
| 74 | }; |
| 75 | const char *type = blob_type; |
| 76 | int hashstdin = 0; |
| 77 | int stdin_paths = 0; |
| 78 | int no_filters = 0; |
| 79 | int nongit = 0; |
| 80 | unsigned flags = INDEX_FORMAT_CHECK; |
| 81 | const char *vpath = NULL; |
| 82 | char *vpath_free = NULL; |
| 83 | const struct option hash_object_options[] = { |
| 84 | OPT_STRING('t', NULL, &type, N_("type"), N_("object type")), |
| 85 | OPT_BIT('w', NULL, &flags, N_("write the object into the object database"), |
| 86 | INDEX_WRITE_OBJECT), |
| 87 | OPT_COUNTUP( 0 , "stdin", &hashstdin, N_("read the object from stdin")), |
| 88 | OPT_BOOL( 0 , "stdin-paths", &stdin_paths, N_("read file names from stdin")), |
| 89 | OPT_BOOL( 0 , "no-filters", &no_filters, N_("store file as is without filters")), |
| 90 | OPT_NEGBIT( 0, "literally", &flags, |
| 91 | N_("just hash any random garbage to create corrupt objects for debugging Git"), |
| 92 | INDEX_FORMAT_CHECK), |
| 93 | OPT_STRING( 0 , "path", &vpath, N_("file"), N_("process file as it were from this path")), |
| 94 | OPT_END() |
| 95 | }; |
| 96 | int i; |
| 97 | const char *errstr = NULL; |
| 98 | |
| 99 | argc = parse_options(argc, argv, prefix, hash_object_options, |
| 100 | hash_object_usage, 0); |
| 101 | |
| 102 | if (flags & INDEX_WRITE_OBJECT) |
| 103 | prefix = setup_git_directory(the_repository); |
| 104 | else |
| 105 | prefix = setup_git_directory_gently(the_repository, &nongit); |
| 106 | |
| 107 | if (nongit && !the_hash_algo) |
| 108 | repo_set_hash_algo(the_repository, GIT_HASH_DEFAULT); |
| 109 | |
| 110 | if (vpath && prefix) { |
| 111 | vpath_free = prefix_filename(prefix, vpath); |
| 112 | vpath = vpath_free; |
| 113 | } |
| 114 | |
| 115 | repo_config(the_repository, git_default_config, NULL); |
| 116 | |
| 117 | if (stdin_paths) { |
| 118 | if (hashstdin) |
| 119 | errstr = "Can't use --stdin-paths with --stdin"; |
| 120 | else if (argc) |
| 121 | errstr = "Can't specify files with --stdin-paths"; |
| 122 | else if (vpath) |
| 123 | errstr = "Can't use --stdin-paths with --path"; |
| 124 | } |
| 125 | else { |
| 126 | if (hashstdin > 1) |
| 127 | errstr = "Multiple --stdin arguments are not supported"; |
| 128 | if (vpath && no_filters) |
| 129 | errstr = "Can't use --path with --no-filters"; |
| 130 | } |
| 131 | |
| 132 | if (errstr) { |
| 133 | error("%s", errstr); |
| 134 | usage_with_options(hash_object_usage, hash_object_options); |
| 135 | } |
| 136 | |
| 137 | if (hashstdin) |
| 138 | hash_fd(0, type, vpath, flags); |
| 139 | |
| 140 | for (i = 0 ; i < argc; i++) { |
| 141 | const char *arg = argv[i]; |
| 142 | char *to_free = NULL; |
| 143 | |
| 144 | if (prefix) |
| 145 | arg = to_free = prefix_filename(prefix, arg); |
| 146 | hash_object(arg, type, no_filters ? NULL : vpath ? vpath : arg, |
| 147 | flags); |
| 148 | free(to_free); |
| 149 | } |
| 150 | |
| 151 | if (stdin_paths) |
| 152 | hash_stdin_paths(type, no_filters, flags); |
| 153 | |
| 154 | free(vpath_free); |
| 155 | |
| 156 | return 0; |
| 157 | } |