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textconv: support for cat_file 

Make the textconv_object function public, and add --textconv option to cat-file
to perform conversion on blob objects. Using --textconv implies that we are
working on a blob.
As files drivers need to be initialized, a new config is required in addition
to git_default_config. Therefore git_cat_file_config() is introduced

Signed-off-by: Clément Poulain <clement.poulain@ensimag.imag.fr>
Signed-off-by: Diane Gasselin <diane.gasselin@ensimag.imag.fr>
Signed-off-by: Axel Bonnet <axel.bonnet@ensimag.imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Clément Poulain 2010-06-15 17:50:28 +02:00 committed by Junio C Hamano
parent 573285e552
commit e5fba602e5
3 changed files with 40 additions and 8 deletions
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2
builtin.h
View File

@ -36,6 +36,8 @@ void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c);

extern int check_pager_config(const char *cmd);

extern int textconv_object(const char *path, const unsigned char *sha1, char **buf, unsigned long *buf_size);

extern int cmd_add(int argc, const char **argv, const char *prefix);
extern int cmd_annotate(int argc, const char **argv, const char *prefix);
extern int cmd_apply(int argc, const char **argv, const char *prefix);

8
builtin/blame.c
View File

@ -91,10 +91,10 @@ struct origin {
* if the textconv driver exists.
* Return 1 if the conversion succeeds, 0 otherwise.
*/
static int textconv_object(const char *path,
const unsigned char *sha1,
char **buf,
unsigned long *buf_size)
int textconv_object(const char *path,
const unsigned char *sha1,
char **buf,
unsigned long *buf_size)
{
struct diff_filespec *df;
struct userdiff_driver *textconv;

38
builtin/cat-file.c
View File

@ -9,6 +9,8 @@
#include "tree.h"
#include "builtin.h"
#include "parse-options.h"
#include "diff.h"
#include "userdiff.h"

#define BATCH 1
#define BATCH_CHECK 2
@ -84,10 +86,11 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
{
unsigned char sha1[20];
enum object_type type;
void *buf;
char *buf;
unsigned long size;
struct object_context obj_context;

if (get_sha1(obj_name, sha1))
if (get_sha1_with_context(obj_name, sha1, &obj_context))
die("Not a valid object name %s", obj_name);

buf = NULL;
@ -132,6 +135,17 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)

/* otherwise just spit out the data */
break;

case 'c':
if (!obj_context.path[0])
die("git cat-file --textconv %s: <object> must be <sha1:path>",
obj_name);

if (!textconv_object(obj_context.path, sha1, &buf, &size))
die("git cat-file --textconv: unable to run textconv on %s",
obj_name);
break;

case 0:
buf = read_object_with_reference(sha1, exp_type, &size, NULL);
break;
@ -201,11 +215,25 @@ static int batch_objects(int print_contents)
}

static const char * const cat_file_usage[] = {
"git cat-file (-t|-s|-e|-p|<type>) <object>",
"git cat-file (-t|-s|-e|-p|<type>|--textconv) <object>",
"git cat-file (--batch|--batch-check) < <list_of_objects>",
NULL
};

static int git_cat_file_config(const char *var, const char *value, void *cb)
{
switch (userdiff_config(var, value)) {
case 0:
break;
case -1:
return -1;
default:
return 0;
}

return git_default_config(var, value, cb);
}

int cmd_cat_file(int argc, const char **argv, const char *prefix)
{
int opt = 0, batch = 0;
@ -218,6 +246,8 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
OPT_SET_INT('e', NULL, &opt,
"exit with zero when there's no error", 'e'),
OPT_SET_INT('p', NULL, &opt, "pretty-print object's content", 'p'),
OPT_SET_INT(0, "textconv", &opt,
"for blob objects, run textconv on object's content", 'c'),
OPT_SET_INT(0, "batch", &batch,
"show info and content of objects fed from the standard input",
BATCH),
@ -227,7 +257,7 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
OPT_END()
};

git_config(git_default_config, NULL);
git_config(git_cat_file_config, NULL);

if (argc != 3 && argc != 2)
usage_with_options(cat_file_usage, options);