gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / hash-object.c
bloba4d127cf78013ca43339c5493b7f7ef90b2145a8
1 /*
2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Junio C Hamano, 2005
6 */
7 #include "cache.h"
8 #include "blob.h"
9 #include "quote.h"
10 #include "parse-options.h"
12 static void hash_fd(int fd, const char *type, int write_object, const char *path)
14 struct stat st;
15 unsigned char sha1[20];
16 if (fstat(fd, &st) < 0 ||
17 index_fd(sha1, fd, &st, write_object, type_from_string(type), path))
18 die(write_object
19 ? "Unable to add %s to database"
20 : "Unable to hash %s", path);
21 printf("%s\n", sha1_to_hex(sha1));
22 maybe_flush_or_die(stdout, "hash to stdout");
25 static void hash_object(const char *path, const char *type, int write_object,
26 const char *vpath)
28 int fd;
29 fd = open(path, O_RDONLY);
30 if (fd < 0)
31 die("Cannot open %s", path);
32 hash_fd(fd, type, write_object, vpath);
35 static void hash_stdin_paths(const char *type, int write_objects)
37 struct strbuf buf, nbuf;
39 strbuf_init(&buf, 0);
40 strbuf_init(&nbuf, 0);
41 while (strbuf_getline(&buf, stdin, '\n') != EOF) {
42 if (buf.buf[0] == '"') {
43 strbuf_reset(&nbuf);
44 if (unquote_c_style(&nbuf, buf.buf, NULL))
45 die("line is badly quoted");
46 strbuf_swap(&buf, &nbuf);
48 hash_object(buf.buf, type, write_objects, buf.buf);
50 strbuf_release(&buf);
51 strbuf_release(&nbuf);
54 static const char * const hash_object_usage[] = {
55 "git hash-object [-t <type>] [-w] [--path=<file>|--no-filters] [--stdin] [--] <file>...",
56 "git hash-object --stdin-paths < <list-of-paths>",
57 NULL
60 static const char *type;
61 static int write_object;
62 static int hashstdin;
63 static int stdin_paths;
64 static int no_filters;
65 static const char *vpath;
67 static const struct option hash_object_options[] = {
68 OPT_STRING('t', NULL, &type, "type", "object type"),
69 OPT_BOOLEAN('w', NULL, &write_object, "write the object into the object database"),
70 OPT_BOOLEAN( 0 , "stdin", &hashstdin, "read the object from stdin"),
71 OPT_BOOLEAN( 0 , "stdin-paths", &stdin_paths, "read file names from stdin"),
72 OPT_BOOLEAN( 0 , "no-filters", &no_filters, "store file as is without filters"),
73 OPT_STRING( 0 , "path", &vpath, "file", "process file as it were from this path"),
74 OPT_END()
77 int main(int argc, const char **argv)
79 int i;
80 const char *prefix = NULL;
81 int prefix_length = -1;
82 const char *errstr = NULL;
84 type = blob_type;
86 git_config(git_default_config, NULL);
88 argc = parse_options(argc, argv, hash_object_options, hash_object_usage, 0);
90 if (write_object) {
91 prefix = setup_git_directory();
92 prefix_length = prefix ? strlen(prefix) : 0;
93 if (vpath && prefix)
94 vpath = prefix_filename(prefix, prefix_length, vpath);
97 if (stdin_paths) {
98 if (hashstdin)
99 errstr = "Can't use --stdin-paths with --stdin";
100 else if (argc)
101 errstr = "Can't specify files with --stdin-paths";
102 else if (vpath)
103 errstr = "Can't use --stdin-paths with --path";
104 else if (no_filters)
105 errstr = "Can't use --stdin-paths with --no-filters";
107 else {
108 if (hashstdin > 1)
109 errstr = "Multiple --stdin arguments are not supported";
110 if (vpath && no_filters)
111 errstr = "Can't use --path with --no-filters";
114 if (errstr) {
115 error (errstr);
116 usage_with_options(hash_object_usage, hash_object_options);
119 if (hashstdin)
120 hash_fd(0, type, write_object, vpath);
122 for (i = 0 ; i < argc; i++) {
123 const char *arg = argv[i];
125 if (0 <= prefix_length)
126 arg = prefix_filename(prefix, prefix_length, arg);
127 hash_object(arg, type, write_object,
128 no_filters ? NULL : vpath ? vpath : arg);
131 if (stdin_paths)
132 hash_stdin_paths(type, write_object);
134 return 0;