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/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
* Copyright (C) Junio C Hamano, 2005
*/
#include "cache.h"
#include "blob.h"
#include "quote.h"
static void hash_fd(int fd, const char *type, int write_object, const char *path)
{
struct stat st;
unsigned char sha1[20];
if (fstat(fd, &st) < 0 ||
index_fd(sha1, fd, &st, write_object, type_from_string(type), path))
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)
{
int fd;
fd = open(path, O_RDONLY);
if (fd < 0)
die("Cannot open %s", path);
hash_fd(fd, type, write_object, path);
}
static void hash_stdin_paths(const char *type, int write_objects)
{
struct strbuf buf, nbuf;
strbuf_init(&buf, 0);
strbuf_init(&nbuf, 0);
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);
}
strbuf_release(&buf);
strbuf_release(&nbuf);
}
static const char hash_object_usage[] =
"git hash-object [-t <type>] [-w] [--stdin] [--] <file>...\n"
" or: git hash-object --stdin-paths < <list-of-paths>";
int main(int argc, char **argv)
{
int i;
const char *type = blob_type;
int write_object = 0;
const char *prefix = NULL;
int prefix_length = -1;
int no_more_flags = 0;
int hashstdin = 0;
int stdin_paths = 0;
git_config(git_default_config, NULL);
for (i = 1 ; i < argc; i++) {
if (!no_more_flags && argv[i][0] == '-') {
if (!strcmp(argv[i], "-t")) {
if (argc <= ++i)
usage(hash_object_usage);
type = argv[i];
}
else if (!strcmp(argv[i], "-w")) {
if (prefix_length < 0) {
prefix = setup_git_directory();
prefix_length =
prefix ? strlen(prefix) : 0;
}
write_object = 1;
}
else if (!strcmp(argv[i], "--")) {
no_more_flags = 1;
}
else if (!strcmp(argv[i], "--help"))
usage(hash_object_usage);
else if (!strcmp(argv[i], "--stdin-paths")) {
if (hashstdin) {
error("Can't use --stdin-paths with --stdin");
usage(hash_object_usage);
}
stdin_paths = 1;
}
else if (!strcmp(argv[i], "--stdin")) {
if (stdin_paths) {
error("Can't use %s with --stdin-paths", argv[i]);
usage(hash_object_usage);
}
if (hashstdin)
die("Multiple --stdin arguments are not supported");
hashstdin = 1;
}
else
usage(hash_object_usage);
}
else {
const char *arg = argv[i];
if (stdin_paths) {
error("Can't specify files (such as \"%s\") with --stdin-paths", arg);
usage(hash_object_usage);
}
if (hashstdin) {
hash_fd(0, type, write_object, NULL);
hashstdin = 0;
}
if (0 <= prefix_length)
arg = prefix_filename(prefix, prefix_length,
arg);
hash_object(arg, type, write_object);
no_more_flags = 1;
}
}
if (stdin_paths)
hash_stdin_paths(type, write_object);
if (hashstdin)
hash_fd(0, type, write_object, NULL);
return 0;
}
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