| /* |
| * GIT - The information manager from hell |
| * |
| * Copyright (C) Linus Torvalds, 2005 |
| * Copyright (C) Junio C Hamano, 2005 |
| */ |
| #include "builtin.h" |
| #include "blob.h" |
| #include "quote.h" |
| #include "parse-options.h" |
| #include "exec_cmd.h" |
| |
| static void hash_fd(int fd, const char *type, int write_object, const char *path) |
| { |
| struct stat st; |
| unsigned char sha1[20]; |
| unsigned flags = (HASH_FORMAT_CHECK | |
| (write_object ? HASH_WRITE_OBJECT : 0)); |
| |
| if (fstat(fd, &st) < 0 || |
| index_fd(sha1, fd, &st, type_from_string(type), path, flags)) |
| die(write_object |
| ? "Unable to add %s to database" |
| : "Unable to hash %s", path); |
| printf("%s\n", sha1_to_hex(sha1)); |
| maybe_flush_or_die(stdout, "hash to stdout"); |
| } |
| |
| static void hash_object(const char *path, const char *type, int write_object, |
| const char *vpath) |
| { |
| int fd; |
| fd = open(path, O_RDONLY); |
| if (fd < 0) |
| die_errno("Cannot open '%s'", path); |
| hash_fd(fd, type, write_object, vpath); |
| } |
| |
| static int no_filters; |
| |
| static void hash_stdin_paths(const char *type, int write_objects) |
| { |
| struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT; |
| |
| while (strbuf_getline(&buf, stdin, '\n') != EOF) { |
| if (buf.buf[0] == '"') { |
| strbuf_reset(&nbuf); |
| if (unquote_c_style(&nbuf, buf.buf, NULL)) |
| die("line is badly quoted"); |
| strbuf_swap(&buf, &nbuf); |
| } |
| hash_object(buf.buf, type, write_objects, |
| no_filters ? NULL : buf.buf); |
| } |
| strbuf_release(&buf); |
| strbuf_release(&nbuf); |
| } |
| |
| static const char * const hash_object_usage[] = { |
| N_("git hash-object [-t <type>] [-w] [--path=<file>|--no-filters] [--stdin] [--] <file>..."), |
| N_("git hash-object --stdin-paths < <list-of-paths>"), |
| NULL |
| }; |
| |
| static const char *type; |
| static int write_object; |
| static int hashstdin; |
| static int stdin_paths; |
| static const char *vpath; |
| |
| static const struct option hash_object_options[] = { |
| OPT_STRING('t', NULL, &type, N_("type"), N_("object type")), |
| OPT_BOOL('w', NULL, &write_object, N_("write the object into the object database")), |
| OPT_COUNTUP( 0 , "stdin", &hashstdin, N_("read the object from stdin")), |
| OPT_BOOL( 0 , "stdin-paths", &stdin_paths, N_("read file names from stdin")), |
| OPT_BOOL( 0 , "no-filters", &no_filters, N_("store file as is without filters")), |
| OPT_STRING( 0 , "path", &vpath, N_("file"), N_("process file as it were from this path")), |
| OPT_END() |
| }; |
| |
| int cmd_hash_object(int argc, const char **argv, const char *prefix) |
| { |
| int i; |
| int prefix_length = -1; |
| const char *errstr = NULL; |
| |
| type = blob_type; |
| |
| argc = parse_options(argc, argv, NULL, hash_object_options, |
| hash_object_usage, 0); |
| |
| if (write_object) { |
| prefix = setup_git_directory(); |
| prefix_length = prefix ? strlen(prefix) : 0; |
| if (vpath && prefix) |
| vpath = prefix_filename(prefix, prefix_length, vpath); |
| } |
| |
| git_config(git_default_config, NULL); |
| |
| if (stdin_paths) { |
| if (hashstdin) |
| errstr = "Can't use --stdin-paths with --stdin"; |
| else if (argc) |
| errstr = "Can't specify files with --stdin-paths"; |
| else if (vpath) |
| errstr = "Can't use --stdin-paths with --path"; |
| } |
| else { |
| if (hashstdin > 1) |
| errstr = "Multiple --stdin arguments are not supported"; |
| if (vpath && no_filters) |
| errstr = "Can't use --path with --no-filters"; |
| } |
| |
| if (errstr) { |
| error("%s", errstr); |
| usage_with_options(hash_object_usage, hash_object_options); |
| } |
| |
| if (hashstdin) |
| hash_fd(0, type, write_object, vpath); |
| |
| for (i = 0 ; i < argc; i++) { |
| const char *arg = argv[i]; |
| |
| if (0 <= prefix_length) |
| arg = prefix_filename(prefix, prefix_length, arg); |
| hash_object(arg, type, write_object, |
| no_filters ? NULL : vpath ? vpath : arg); |
| } |
| |
| if (stdin_paths) |
| hash_stdin_paths(type, write_object); |
| |
| return 0; |
| } |