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Diffstat (limited to 'builtin/cat-file.c')
-rw-r--r--builtin/cat-file.c113
1 files changed, 79 insertions, 34 deletions
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 707330499f..049a95f1f1 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -4,22 +4,26 @@
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
-#include "exec_cmd.h"
-#include "tag.h"
-#include "tree.h"
#include "builtin.h"
#include "parse-options.h"
-#include "diff.h"
#include "userdiff.h"
#include "streaming.h"
+#include "tree-walk.h"
-static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
+static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
+ int unknown_type)
{
unsigned char sha1[20];
enum object_type type;
char *buf;
unsigned long size;
struct object_context obj_context;
+ struct object_info oi = {NULL};
+ struct strbuf sb = STRBUF_INIT;
+ unsigned flags = LOOKUP_REPLACE_OBJECT;
+
+ if (unknown_type)
+ flags |= LOOKUP_UNKNOWN_OBJECT;
if (get_sha1_with_context(obj_name, 0, sha1, &obj_context))
die("Not a valid object name %s", obj_name);
@@ -27,20 +31,22 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
buf = NULL;
switch (opt) {
case 't':
- type = sha1_object_info(sha1, NULL);
- if (type > 0) {
- printf("%s\n", typename(type));
+ oi.typename = &sb;
+ if (sha1_object_info_extended(sha1, &oi, flags) < 0)
+ die("git cat-file: could not get object info");
+ if (sb.len) {
+ printf("%s\n", sb.buf);
+ strbuf_release(&sb);
return 0;
}
break;
case 's':
- type = sha1_object_info(sha1, &size);
- if (type > 0) {
- printf("%lu\n", size);
- return 0;
- }
- break;
+ oi.sizep = &size;
+ if (sha1_object_info_extended(sha1, &oi, flags) < 0)
+ die("git cat-file: could not get object info");
+ printf("%lu\n", size);
+ return 0;
case 'e':
return !has_sha1_file(sha1);
@@ -79,11 +85,10 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
if (type_from_string(exp_type) == OBJ_BLOB) {
unsigned char blob_sha1[20];
if (sha1_object_info(sha1, NULL) == OBJ_TAG) {
- enum object_type type;
- unsigned long size;
char *buffer = read_sha1_file(sha1, &type, &size);
- if (memcmp(buffer, "object ", 7) ||
- get_sha1_hex(buffer + 7, blob_sha1))
+ const char *target;
+ if (!skip_prefix(buffer, "object ", &target) ||
+ get_sha1_hex(target, blob_sha1))
die("%s not a valid tag", sha1_to_hex(sha1));
free(buffer);
} else
@@ -229,6 +234,7 @@ static void print_object_or_die(int fd, struct expand_data *data)
struct batch_options {
int enabled;
+ int follow_symlinks;
int print_contents;
const char *format;
};
@@ -237,12 +243,44 @@ static int batch_one_object(const char *obj_name, struct batch_options *opt,
struct expand_data *data)
{
struct strbuf buf = STRBUF_INIT;
+ struct object_context ctx;
+ int flags = opt->follow_symlinks ? GET_SHA1_FOLLOW_SYMLINKS : 0;
+ enum follow_symlinks_result result;
if (!obj_name)
return 1;
- if (get_sha1(obj_name, data->sha1)) {
- printf("%s missing\n", obj_name);
+ result = get_sha1_with_context(obj_name, flags, data->sha1, &ctx);
+ if (result != FOUND) {
+ switch (result) {
+ case MISSING_OBJECT:
+ printf("%s missing\n", obj_name);
+ break;
+ case DANGLING_SYMLINK:
+ printf("dangling %"PRIuMAX"\n%s\n",
+ (uintmax_t)strlen(obj_name), obj_name);
+ break;
+ case SYMLINK_LOOP:
+ printf("loop %"PRIuMAX"\n%s\n",
+ (uintmax_t)strlen(obj_name), obj_name);
+ break;
+ case NOT_DIR:
+ printf("notdir %"PRIuMAX"\n%s\n",
+ (uintmax_t)strlen(obj_name), obj_name);
+ break;
+ default:
+ die("BUG: unknown get_sha1_with_context result %d\n",
+ result);
+ break;
+ }
+ fflush(stdout);
+ return 0;
+ }
+
+ if (ctx.mode == 0) {
+ printf("symlink %"PRIuMAX"\n%s\n",
+ (uintmax_t)ctx.symlink_path.len,
+ ctx.symlink_path.buf);
fflush(stdout);
return 0;
}
@@ -328,8 +366,8 @@ static int batch_objects(struct batch_options *opt)
}
static const char * const cat_file_usage[] = {
- N_("git cat-file (-t|-s|-e|-p|<type>|--textconv) <object>"),
- N_("git cat-file (--batch|--batch-check) < <list_of_objects>"),
+ N_("git cat-file (-t [--allow-unknown-type]|-s [--allow-unknown-type]|-e|-p|<type>|--textconv) <object>"),
+ N_("git cat-file (--batch | --batch-check) [--follow-symlinks] < <list-of-objects>"),
NULL
};
@@ -347,9 +385,8 @@ static int batch_option_callback(const struct option *opt,
{
struct batch_options *bo = opt->value;
- if (unset) {
- memset(bo, 0, sizeof(*bo));
- return 0;
+ if (bo->enabled) {
+ return 1;
}
bo->enabled = 1;
@@ -364,30 +401,32 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
int opt = 0;
const char *exp_type = NULL, *obj_name = NULL;
struct batch_options batch = {0};
+ int unknown_type = 0;
const struct option options[] = {
OPT_GROUP(N_("<type> can be one of: blob, tree, commit, tag")),
- OPT_SET_INT('t', NULL, &opt, N_("show object type"), 't'),
- OPT_SET_INT('s', NULL, &opt, N_("show object size"), 's'),
- OPT_SET_INT('e', NULL, &opt,
+ OPT_CMDMODE('t', NULL, &opt, N_("show object type"), 't'),
+ OPT_CMDMODE('s', NULL, &opt, N_("show object size"), 's'),
+ OPT_CMDMODE('e', NULL, &opt,
N_("exit with zero when there's no error"), 'e'),
- OPT_SET_INT('p', NULL, &opt, N_("pretty-print object's content"), 'p'),
- OPT_SET_INT(0, "textconv", &opt,
+ OPT_CMDMODE('p', NULL, &opt, N_("pretty-print object's content"), 'p'),
+ OPT_CMDMODE(0, "textconv", &opt,
N_("for blob objects, run textconv on object's content"), 'c'),
+ OPT_BOOL( 0, "allow-unknown-type", &unknown_type,
+ N_("allow -s and -t to work with broken/corrupt objects")),
{ OPTION_CALLBACK, 0, "batch", &batch, "format",
N_("show info and content of objects fed from the standard input"),
PARSE_OPT_OPTARG, batch_option_callback },
{ OPTION_CALLBACK, 0, "batch-check", &batch, "format",
N_("show info about objects fed from the standard input"),
PARSE_OPT_OPTARG, batch_option_callback },
+ OPT_BOOL(0, "follow-symlinks", &batch.follow_symlinks,
+ N_("follow in-tree symlinks (used with --batch or --batch-check)")),
OPT_END()
};
git_config(git_cat_file_config, NULL);
- if (argc != 3 && argc != 2)
- usage_with_options(cat_file_usage, options);
-
argc = parse_options(argc, argv, prefix, options, cat_file_usage, 0);
if (opt) {
@@ -407,8 +446,14 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
usage_with_options(cat_file_usage, options);
}
+ if (batch.follow_symlinks && !batch.enabled) {
+ usage_with_options(cat_file_usage, options);
+ }
+
if (batch.enabled)
return batch_objects(&batch);
- return cat_one_file(opt, exp_type, obj_name);
+ if (unknown_type && opt != 't' && opt != 's')
+ die("git cat-file --allow-unknown-type: use with -s or -t");
+ return cat_one_file(opt, exp_type, obj_name, unknown_type);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 11:26:18 +0000