Allow saving an object from a pipe
In order to support getting data into git with scripts, this adds a --stdin option to git-hash-object, which will make it read from stdin. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
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024510c8d9
@ -8,7 +8,7 @@ git-hash-object - Computes object ID and optionally creates a blob from a file.
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SYNOPSIS
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--------
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'git-hash-object' [-t <type>] [-w] <file>
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'git-hash-object' [-t <type>] [-w] [--stdin] [--] <file>...
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DESCRIPTION
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-----------
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@ -29,6 +29,9 @@ OPTIONS
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-w::
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Actually write the object into the object database.
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--stdin::
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Read the object from standard input instead of from a file.
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Author
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------
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Written by Junio C Hamano <junkio@cox.net>
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1
cache.h
1
cache.h
@ -144,6 +144,7 @@ extern int ce_match_stat(struct cache_entry *ce, struct stat *st);
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extern int ce_modified(struct cache_entry *ce, struct stat *st);
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extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
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extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type);
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extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
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extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
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extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
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@ -21,8 +21,16 @@ static void hash_object(const char *path, const char *type, int write_object)
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printf("%s\n", sha1_to_hex(sha1));
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}
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static void hash_stdin(const char *type, int write_object)
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{
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unsigned char sha1[20];
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if (index_pipe(sha1, 0, type, write_object))
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die("Unable to add stdin to database");
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printf("%s\n", sha1_to_hex(sha1));
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}
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static const char hash_object_usage[] =
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"git-hash-object [-t <type>] [-w] <file>...";
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"git-hash-object [-t <type>] [-w] [--stdin] <file>...";
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int main(int argc, char **argv)
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{
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@ -53,6 +61,9 @@ int main(int argc, char **argv)
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}
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else if (!strcmp(argv[i], "--help"))
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usage(hash_object_usage);
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else if (!strcmp(argv[i], "--stdin")) {
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hash_stdin(type, write_object);
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}
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else
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die(hash_object_usage);
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}
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34
sha1_file.c
34
sha1_file.c
@ -1528,6 +1528,40 @@ int has_sha1_file(const unsigned char *sha1)
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return find_sha1_file(sha1, &st) ? 1 : 0;
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}
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int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object)
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{
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unsigned long size = 4096;
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char *buf = malloc(size);
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int iret, ret;
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unsigned long off = 0;
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unsigned char hdr[50];
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int hdrlen;
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do {
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iret = read(fd, buf + off, size - off);
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if (iret > 0) {
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off += iret;
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if (off == size) {
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size *= 2;
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buf = realloc(buf, size);
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}
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}
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} while (iret > 0);
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if (iret < 0) {
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free(buf);
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return -1;
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}
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if (!type)
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type = "blob";
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if (write_object)
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ret = write_sha1_file(buf, off, type, sha1);
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else {
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write_sha1_file_prepare(buf, off, type, sha1, hdr, &hdrlen);
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ret = 0;
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}
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free(buf);
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return ret;
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}
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int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type)
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{
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unsigned long size = st->st_size;
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