#include "parse-options.h"
#include "exec_cmd.h"
-static void hash_fd(int fd, const char *type, int write_object, const char *path)
+/*
+ * This is to create corrupt objects for debugging and as such it
+ * needs to bypass the data conversion performed by, and the type
+ * limitation imposed by, index_fd() and its callees.
+ */
+static int hash_literally(unsigned char *sha1, int fd, const char *type, unsigned flags)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int ret;
+
+ if (strbuf_read(&buf, fd, 4096) < 0)
+ ret = -1;
+ else if (flags & HASH_WRITE_OBJECT)
+ ret = write_sha1_file(buf.buf, buf.len, type, sha1);
+ else
+ ret = hash_sha1_file(buf.buf, buf.len, type, sha1);
+ strbuf_release(&buf);
+ return ret;
+}
+
+static void hash_fd(int fd, const char *type, const char *path, unsigned flags,
+ int literally)
{
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
+ (literally
+ ? hash_literally(sha1, fd, type, flags)
+ : index_fd(sha1, fd, &st, type_from_string(type), path, flags)))
+ die((flags & HASH_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)
+static void hash_object(const char *path, const char *type, const char *vpath,
+ unsigned flags, int literally)
{
int fd;
fd = open(path, O_RDONLY);
if (fd < 0)
die_errno("Cannot open '%s'", path);
- hash_fd(fd, type, write_object, vpath);
+ hash_fd(fd, type, vpath, flags, literally);
}
-static int no_filters;
-
-static void hash_stdin_paths(const char *type, int write_objects)
+static void hash_stdin_paths(const char *type, int no_filters, unsigned flags,
+ int literally)
{
struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
die("line is badly quoted");
strbuf_swap(&buf, &nbuf);
}
- hash_object(buf.buf, type, write_objects,
- no_filters ? NULL : buf.buf);
+ hash_object(buf.buf, type, no_filters ? NULL : buf.buf, flags,
+ literally);
}
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)
{
+ 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
+ };
+ const char *type = blob_type;
+ int hashstdin = 0;
+ int stdin_paths = 0;
+ int no_filters = 0;
+ int literally = 0;
+ unsigned flags = HASH_FORMAT_CHECK;
+ const char *vpath = NULL;
+ const struct option hash_object_options[] = {
+ OPT_STRING('t', NULL, &type, N_("type"), N_("object type")),
+ OPT_BIT('w', NULL, &flags, N_("write the object into the object database"),
+ HASH_WRITE_OBJECT),
+ 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_BOOL( 0, "literally", &literally, N_("just hash any random garbage to create corrupt objects for debugging Git")),
+ OPT_STRING( 0 , "path", &vpath, N_("file"), N_("process file as it were from this path")),
+ OPT_END()
+ };
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) {
+ if (flags & HASH_WRITE_OBJECT) {
prefix = setup_git_directory();
prefix_length = prefix ? strlen(prefix) : 0;
if (vpath && prefix)
}
if (hashstdin)
- hash_fd(0, type, write_object, vpath);
+ hash_fd(0, type, vpath, flags, literally);
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);
+ hash_object(arg, type, no_filters ? NULL : vpath ? vpath : arg,
+ flags, literally);
}
if (stdin_paths)
- hash_stdin_paths(type, write_object);
+ hash_stdin_paths(type, no_filters, flags, literally);
return 0;
}