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-rw-r--r--builtin/cat-file.c134
1 files changed, 98 insertions, 36 deletions
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 049a95f1f1..c0fd8dbb1c 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -9,6 +9,16 @@
#include "userdiff.h"
#include "streaming.h"
#include "tree-walk.h"
+#include "sha1-array.h"
+
+struct batch_options {
+ int enabled;
+ int follow_symlinks;
+ int print_contents;
+ int buffer_output;
+ int all_objects;
+ const char *format;
+};
static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
int unknown_type)
@@ -204,14 +214,25 @@ static size_t expand_format(struct strbuf *sb, const char *start, void *data)
return end - start + 1;
}
-static void print_object_or_die(int fd, struct expand_data *data)
+static void batch_write(struct batch_options *opt, const void *data, int len)
+{
+ if (opt->buffer_output) {
+ if (fwrite(data, 1, len, stdout) != len)
+ die_errno("unable to write to stdout");
+ } else
+ write_or_die(1, data, len);
+}
+
+static void print_object_or_die(struct batch_options *opt, struct expand_data *data)
{
const unsigned char *sha1 = data->sha1;
assert(data->info.typep);
if (data->type == OBJ_BLOB) {
- if (stream_blob_to_fd(fd, sha1, NULL, 0) < 0)
+ if (opt->buffer_output)
+ fflush(stdout);
+ if (stream_blob_to_fd(1, sha1, NULL, 0) < 0)
die("unable to stream %s to stdout", sha1_to_hex(sha1));
}
else {
@@ -227,29 +248,40 @@ static void print_object_or_die(int fd, struct expand_data *data)
if (data->info.sizep && size != data->size)
die("object %s changed size!?", sha1_to_hex(sha1));
- write_or_die(fd, contents, size);
+ batch_write(opt, contents, size);
free(contents);
}
}
-struct batch_options {
- int enabled;
- int follow_symlinks;
- int print_contents;
- const char *format;
-};
-
-static int batch_one_object(const char *obj_name, struct batch_options *opt,
- struct expand_data *data)
+static void batch_object_write(const char *obj_name, struct batch_options *opt,
+ struct expand_data *data)
{
struct strbuf buf = STRBUF_INIT;
+
+ if (sha1_object_info_extended(data->sha1, &data->info, LOOKUP_REPLACE_OBJECT) < 0) {
+ printf("%s missing\n", obj_name ? obj_name : sha1_to_hex(data->sha1));
+ fflush(stdout);
+ return;
+ }
+
+ strbuf_expand(&buf, opt->format, expand_format, data);
+ strbuf_addch(&buf, '\n');
+ batch_write(opt, buf.buf, buf.len);
+ strbuf_release(&buf);
+
+ if (opt->print_contents) {
+ print_object_or_die(opt, data);
+ batch_write(opt, "\n", 1);
+ }
+}
+
+static void batch_one_object(const char *obj_name, struct batch_options *opt,
+ struct expand_data *data)
+{
struct object_context ctx;
int flags = opt->follow_symlinks ? GET_SHA1_FOLLOW_SYMLINKS : 0;
enum follow_symlinks_result result;
- if (!obj_name)
- return 1;
-
result = get_sha1_with_context(obj_name, flags, data->sha1, &ctx);
if (result != FOUND) {
switch (result) {
@@ -274,7 +306,7 @@ static int batch_one_object(const char *obj_name, struct batch_options *opt,
break;
}
fflush(stdout);
- return 0;
+ return;
}
if (ctx.mode == 0) {
@@ -282,24 +314,38 @@ static int batch_one_object(const char *obj_name, struct batch_options *opt,
(uintmax_t)ctx.symlink_path.len,
ctx.symlink_path.buf);
fflush(stdout);
- return 0;
+ return;
}
- if (sha1_object_info_extended(data->sha1, &data->info, LOOKUP_REPLACE_OBJECT) < 0) {
- printf("%s missing\n", obj_name);
- fflush(stdout);
- return 0;
- }
+ batch_object_write(obj_name, opt, data);
+}
- strbuf_expand(&buf, opt->format, expand_format, data);
- strbuf_addch(&buf, '\n');
- write_or_die(1, buf.buf, buf.len);
- strbuf_release(&buf);
+struct object_cb_data {
+ struct batch_options *opt;
+ struct expand_data *expand;
+};
- if (opt->print_contents) {
- print_object_or_die(1, data);
- write_or_die(1, "\n", 1);
- }
+static void batch_object_cb(const unsigned char sha1[20], void *vdata)
+{
+ struct object_cb_data *data = vdata;
+ hashcpy(data->expand->sha1, sha1);
+ batch_object_write(NULL, data->opt, data->expand);
+}
+
+static int batch_loose_object(const unsigned char *sha1,
+ const char *path,
+ void *data)
+{
+ sha1_array_append(data, sha1);
+ return 0;
+}
+
+static int batch_packed_object(const unsigned char *sha1,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data)
+{
+ sha1_array_append(data, sha1);
return 0;
}
@@ -330,6 +376,21 @@ static int batch_objects(struct batch_options *opt)
if (opt->print_contents)
data.info.typep = &data.type;
+ if (opt->all_objects) {
+ struct sha1_array sa = SHA1_ARRAY_INIT;
+ struct object_cb_data cb;
+
+ for_each_loose_object(batch_loose_object, &sa, 0);
+ for_each_packed_object(batch_packed_object, &sa, 0);
+
+ cb.opt = opt;
+ cb.expand = &data;
+ sha1_array_for_each_unique(&sa, batch_object_cb, &cb);
+
+ sha1_array_clear(&sa);
+ return 0;
+ }
+
/*
* We are going to call get_sha1 on a potentially very large number of
* objects. In most large cases, these will be actual object sha1s. The
@@ -355,9 +416,7 @@ static int batch_objects(struct batch_options *opt)
data.rest = p;
}
- retval = batch_one_object(buf.buf, opt, &data);
- if (retval)
- break;
+ batch_one_object(buf.buf, opt, &data);
}
strbuf_release(&buf);
@@ -367,7 +426,7 @@ static int batch_objects(struct batch_options *opt)
static const char * const cat_file_usage[] = {
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>"),
+ N_("git cat-file (--batch | --batch-check) [--follow-symlinks]"),
NULL
};
@@ -412,8 +471,9 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
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,
+ OPT_BOOL(0, "allow-unknown-type", &unknown_type,
N_("allow -s and -t to work with broken/corrupt objects")),
+ OPT_BOOL(0, "buffer", &batch.buffer_output, N_("buffer --batch output")),
{ OPTION_CALLBACK, 0, "batch", &batch, "format",
N_("show info and content of objects fed from the standard input"),
PARSE_OPT_OPTARG, batch_option_callback },
@@ -422,6 +482,8 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
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_BOOL(0, "batch-all-objects", &batch.all_objects,
+ N_("show all objects with --batch or --batch-check")),
OPT_END()
};
@@ -446,7 +508,7 @@ 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) {
+ if ((batch.follow_symlinks || batch.all_objects) && !batch.enabled) {
usage_with_options(cat_file_usage, options);
}