gitk: Second try to work around the command line limit on Windows
[git/dscho.git] / builtin / hash-object.c
blob080af1a01b8155680faf6c04101217b60ae7b919
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"
11 #include "exec_cmd.h"
13 static void hash_fd(int fd, const char *type, int write_object, const char *path)
15 struct stat st;
16 unsigned char sha1[20];
17 if (fstat(fd, &st) < 0 ||
18 index_fd(sha1, fd, &st, write_object, type_from_string(type), path))
19 die(write_object
20 ? "Unable to add %s to database"
21 : "Unable to hash %s", path);
22 printf("%s\n", sha1_to_hex(sha1));
23 maybe_flush_or_die(stdout, "hash to stdout");
26 static void hash_object(const char *path, const char *type, int write_object,
27 const char *vpath)
29 int fd;
30 fd = open(path, O_RDONLY);
31 if (fd < 0)
32 die_errno("Cannot open '%s'", path);
33 hash_fd(fd, type, write_object, vpath);
36 static int no_filters;
38 static void hash_stdin_paths(const char *type, int write_objects)
40 struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
42 while (strbuf_getline(&buf, stdin, '\n') != EOF) {
43 if (buf.buf[0] == '"') {
44 strbuf_reset(&nbuf);
45 if (unquote_c_style(&nbuf, buf.buf, NULL))
46 die("line is badly quoted");
47 strbuf_swap(&buf, &nbuf);
49 hash_object(buf.buf, type, write_objects,
50 no_filters ? NULL : buf.buf);
52 strbuf_release(&buf);
53 strbuf_release(&nbuf);
56 static const char * const hash_object_usage[] = {
57 "git hash-object [-t <type>] [-w] [--path=<file>|--no-filters] [--stdin] [--] <file>...",
58 "git hash-object --stdin-paths < <list-of-paths>",
59 NULL
62 static const char *type;
63 static int write_object;
64 static int hashstdin;
65 static int stdin_paths;
66 static const char *vpath;
68 static const struct option hash_object_options[] = {
69 OPT_STRING('t', NULL, &type, "type", "object type"),
70 OPT_BOOLEAN('w', NULL, &write_object, "write the object into the object database"),
71 OPT_BOOLEAN( 0 , "stdin", &hashstdin, "read the object from stdin"),
72 OPT_BOOLEAN( 0 , "stdin-paths", &stdin_paths, "read file names from stdin"),
73 OPT_BOOLEAN( 0 , "no-filters", &no_filters, "store file as is without filters"),
74 OPT_STRING( 0 , "path", &vpath, "file", "process file as it were from this path"),
75 OPT_END()
78 int cmd_hash_object(int argc, const char **argv, const char *prefix)
80 int i;
81 int prefix_length = -1;
82 const char *errstr = NULL;
84 type = blob_type;
86 argc = parse_options(argc, argv, NULL, hash_object_options,
87 hash_object_usage, 0);
89 if (write_object) {
90 prefix = setup_git_directory();
91 prefix_length = prefix ? strlen(prefix) : 0;
92 if (vpath && prefix)
93 vpath = prefix_filename(prefix, prefix_length, vpath);
96 git_config(git_default_config, NULL);
98 if (stdin_paths) {
99 if (hashstdin)
100 errstr = "Can't use --stdin-paths with --stdin";
101 else if (argc)
102 errstr = "Can't specify files with --stdin-paths";
103 else if (vpath)
104 errstr = "Can't use --stdin-paths with --path";
106 else {
107 if (hashstdin > 1)
108 errstr = "Multiple --stdin arguments are not supported";
109 if (vpath && no_filters)
110 errstr = "Can't use --path with --no-filters";
113 if (errstr) {
114 error("%s", errstr);
115 usage_with_options(hash_object_usage, hash_object_options);
118 if (hashstdin)
119 hash_fd(0, type, write_object, vpath);
121 for (i = 0 ; i < argc; i++) {
122 const char *arg = argv[i];
124 if (0 <= prefix_length)
125 arg = prefix_filename(prefix, prefix_length, arg);
126 hash_object(arg, type, write_object,
127 no_filters ? NULL : vpath ? vpath : arg);
130 if (stdin_paths)
131 hash_stdin_paths(type, write_object);
133 return 0;