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-rw-r--r--builtin/cat-file.c104
1 files changed, 96 insertions, 8 deletions
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 3ee9bc9..94e67eb 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -17,9 +17,34 @@ struct batch_options {
int print_contents;
int buffer_output;
int all_objects;
+ int cmdmode; /* may be 'w' or 'c' for --filters or --textconv */
const char *format;
};
+static const char *force_path;
+
+static int filter_object(const char *path, unsigned mode,
+ const struct object_id *oid,
+ char **buf, unsigned long *size)
+{
+ enum object_type type;
+
+ *buf = read_sha1_file(oid->hash, &type, size);
+ if (!*buf)
+ return error(_("cannot read object %s '%s'"),
+ oid_to_hex(oid), path);
+ if ((type == OBJ_BLOB) && S_ISREG(mode)) {
+ struct strbuf strbuf = STRBUF_INIT;
+ if (convert_to_working_tree(path, *buf, *size, &strbuf)) {
+ free(*buf);
+ *size = strbuf.len;
+ *buf = strbuf_detach(&strbuf, NULL);
+ }
+ }
+
+ return 0;
+}
+
static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
int unknown_type)
{
@@ -31,6 +56,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
struct object_info oi = {NULL};
struct strbuf sb = STRBUF_INIT;
unsigned flags = LOOKUP_REPLACE_OBJECT;
+ const char *path = force_path;
if (unknown_type)
flags |= LOOKUP_UNKNOWN_OBJECT;
@@ -38,6 +64,11 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
if (get_sha1_with_context(obj_name, 0, oid.hash, &obj_context))
die("Not a valid object name %s", obj_name);
+ if (!path)
+ path = obj_context.path;
+ if (obj_context.mode == S_IFINVALID)
+ obj_context.mode = 0100644;
+
buf = NULL;
switch (opt) {
case 't':
@@ -61,12 +92,22 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
case 'e':
return !has_object_file(&oid);
+ case 'w':
+ if (!path[0])
+ die("git cat-file --filters %s: <object> must be "
+ "<sha1:path>", obj_name);
+
+ if (filter_object(path, obj_context.mode,
+ &oid, &buf, &size))
+ return -1;
+ break;
+
case 'c':
- if (!obj_context.path[0])
+ if (!path[0])
die("git cat-file --textconv %s: <object> must be <sha1:path>",
obj_name);
- if (textconv_object(obj_context.path, obj_context.mode, &oid, 1, &buf, &size))
+ if (textconv_object(path, obj_context.mode, &oid, 1, &buf, &size))
break;
case 'p':
@@ -240,7 +281,32 @@ static void print_object_or_die(struct batch_options *opt, struct expand_data *d
if (data->type == OBJ_BLOB) {
if (opt->buffer_output)
fflush(stdout);
- if (stream_blob_to_fd(1, oid, NULL, 0) < 0)
+ if (opt->cmdmode) {
+ char *contents;
+ unsigned long size;
+
+ if (!data->rest)
+ die("missing path for '%s'", oid_to_hex(oid));
+
+ if (opt->cmdmode == 'w') {
+ if (filter_object(data->rest, 0100644, oid,
+ &contents, &size))
+ die("could not convert '%s' %s",
+ oid_to_hex(oid), data->rest);
+ } else if (opt->cmdmode == 'c') {
+ enum object_type type;
+ if (!textconv_object(data->rest, 0100644, oid,
+ 1, &contents, &size))
+ contents = read_sha1_file(oid->hash, &type,
+ &size);
+ if (!contents)
+ die("could not convert '%s' %s",
+ oid_to_hex(oid), data->rest);
+ } else
+ die("BUG: invalid cmdmode: %c", opt->cmdmode);
+ batch_write(opt, contents, size);
+ free(contents);
+ } else if (stream_blob_to_fd(1, oid, NULL, 0) < 0)
die("unable to stream %s to stdout", oid_to_hex(oid));
}
else {
@@ -378,6 +444,8 @@ static int batch_objects(struct batch_options *opt)
data.mark_query = 1;
strbuf_expand(&buf, opt->format, expand_format, &data);
data.mark_query = 0;
+ if (opt->cmdmode)
+ data.split_on_whitespace = 1;
if (opt->all_objects) {
struct object_info empty;
@@ -442,8 +510,8 @@ 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]"),
+ N_("git cat-file (-t [--allow-unknown-type] | -s [--allow-unknown-type] | -e | -p | <type> | --textconv | --filters) [--path=<path>] <object>"),
+ N_("git cat-file (--batch | --batch-check) [--follow-symlinks] [--textconv | --filters]"),
NULL
};
@@ -488,6 +556,10 @@ 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_CMDMODE(0, "filters", &opt,
+ N_("for blob objects, run filters on object's content"), 'w'),
+ OPT_STRING(0, "path", &force_path, N_("blob"),
+ N_("use a specific path for --textconv/--filters")),
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")),
@@ -510,7 +582,9 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, options, cat_file_usage, 0);
if (opt) {
- if (argc == 1)
+ if (batch.enabled && (opt == 'c' || opt == 'w'))
+ batch.cmdmode = opt;
+ else if (argc == 1)
obj_name = argv[0];
else
usage_with_options(cat_file_usage, options);
@@ -522,14 +596,28 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
} else
usage_with_options(cat_file_usage, options);
}
- if (batch.enabled && (opt || argc)) {
- usage_with_options(cat_file_usage, options);
+ if (batch.enabled) {
+ if (batch.cmdmode != opt || argc)
+ usage_with_options(cat_file_usage, options);
+ if (batch.cmdmode && batch.all_objects)
+ die("--batch-all-objects cannot be combined with "
+ "--textconv nor with --filters");
}
if ((batch.follow_symlinks || batch.all_objects) && !batch.enabled) {
usage_with_options(cat_file_usage, options);
}
+ if (force_path && opt != 'c' && opt != 'w') {
+ error("--path=<path> needs --textconv or --filters");
+ usage_with_options(cat_file_usage, options);
+ }
+
+ if (force_path && batch.enabled) {
+ error("--path=<path> incompatible with --batch");
+ usage_with_options(cat_file_usage, options);
+ }
+
if (batch.buffer_output < 0)
batch.buffer_output = batch.all_objects;
generated by cgit v0.10.2-6-g49f6 at 2024-04-24 02:02:06 (GMT)