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index-pack: start learning to emulate "verify-pack -v"

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The "index-pack" machinery already has almost enough knowledge to produce
the same output as "verify-pack -v". Fill small gaps in its bookkeeping,
and teach it to show what it knows.

Add a few more command line options that do not have to be advertised to
the end users. They will be used internally when verify-pack calls this.
The eventual goal is to remove verify-pack implementation and redo it as a
thin wrapper around the index-pack, so that we can remove the rather
expensive packed_object_info_detail() API.

This still does not do the delta-chain-depth histogram yet but that part
is easy.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2011-06-03 15:32:15 -07:00
parent 4f8ec74efa
commit 38a4556198
1 changed files with 40 additions and 3 deletions
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43
builtin/index-pack.c
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@ -20,6 +20,8 @@ struct object_entry
unsigned int hdr_size;
enum object_type type;
enum object_type real_type;
unsigned delta_depth;
int base_object_no;
};
union delta_base {
@ -535,6 +537,8 @@ static void resolve_delta(struct object_entry *delta_obj,
void *base_data, *delta_data;
delta_obj->real_type = base->obj->real_type;
delta_obj->delta_depth = base->obj->delta_depth + 1;
delta_obj->base_object_no = base->obj - objects;
delta_data = get_data_from_pack(delta_obj);
base_data = get_base_data(base);
result->obj = delta_obj;
@ -967,9 +971,32 @@ static void read_idx_option(struct pack_idx_option *opts, const char *pack_name)
free(p);
}
static void show_pack_info(int stat_only)
{
int i;
for (i = 0; i < nr_objects; i++) {
struct object_entry *obj = &objects[i];
/* NEEDSWORK: Compute data necessary for the "histogram" here */
if (stat_only)
continue;
printf("%s %-6s %lu %lu %"PRIuMAX,
sha1_to_hex(obj->idx.sha1),
typename(obj->real_type), obj->size,
(unsigned long)(obj[1].idx.offset - obj->idx.offset),
(uintmax_t)obj->idx.offset);
if (is_delta_type(obj->type)) {
struct object_entry *bobj = &objects[obj->base_object_no];
printf(" %u %s", obj->delta_depth, sha1_to_hex(bobj->idx.sha1));
}
putchar('\n');
}
}
int cmd_index_pack(int argc, const char **argv, const char *prefix)
{
int i, fix_thin_pack = 0, verify = 0;
int i, fix_thin_pack = 0, verify = 0, stat_only = 0, stat = 0;
const char *curr_pack, *curr_index;
const char *index_name = NULL, *pack_name = NULL;
const char *keep_name = NULL, *keep_msg = NULL;
@ -1000,6 +1027,13 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
strict = 1;
} else if (!strcmp(arg, "--verify")) {
verify = 1;
} else if (!strcmp(arg, "--verify-stat")) {
verify = 1;
stat = 1;
} else if (!strcmp(arg, "--verify-stat-only")) {
verify = 1;
stat = 1;
stat_only = 1;
} else if (!strcmp(arg, "--keep")) {
keep_msg = "";
} else if (!prefixcmp(arg, "--keep=")) {
@ -1075,8 +1109,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
curr_pack = open_pack_file(pack_name);
parse_pack_header();
objects = xmalloc((nr_objects + 1) * sizeof(struct object_entry));
deltas = xmalloc(nr_objects * sizeof(struct delta_entry));
objects = xcalloc(nr_objects + 1, sizeof(struct object_entry));
deltas = xcalloc(nr_objects, sizeof(struct delta_entry));
parse_pack_objects(pack_sha1);
if (nr_deltas == nr_resolved_deltas) {
stop_progress(&progress);
@ -1116,6 +1150,9 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
if (strict)
check_objects();
if (stat)
show_pack_info(stat_only);
idx_objects = xmalloc((nr_objects) * sizeof(struct pack_idx_entry *));
for (i = 0; i < nr_objects; i++)
idx_objects[i] = &objects[i].idx;