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git/builtin-prune-packed.c
Johannes Sixt 531e6daa03 prune-packed: advanced progress even for non-existing fan-out directories
A progress indicator is used to count through the 256 object fan-out
directories while unused object files are removed. (However, it becomes
visible only if this process takes long enough.)

Previously, display_progress() was only called if object files were
actually removed. But if directories towards the end (fd/, fe/, ff/) did
not exist, this could leave a strange line

   Removing duplicate objects:  99% (255/256), done.

in the terminal instead of the expected "100% (256/256)".

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-27 01:06:35 -07:00

91 lines
1.9 KiB
C

#include "builtin.h"
#include "cache.h"
#include "progress.h"
static const char prune_packed_usage[] =
"git prune-packed [-n] [-q]";
#define DRY_RUN 01
#define VERBOSE 02
static struct progress *progress;
static void prune_dir(int i, DIR *dir, char *pathname, int len, int opts)
{
struct dirent *de;
char hex[40];
sprintf(hex, "%02x", i);
while ((de = readdir(dir)) != NULL) {
unsigned char sha1[20];
if (strlen(de->d_name) != 38)
continue;
memcpy(hex+2, de->d_name, 38);
if (get_sha1_hex(hex, sha1))
continue;
if (!has_sha1_pack(sha1))
continue;
memcpy(pathname + len, de->d_name, 38);
if (opts & DRY_RUN)
printf("rm -f %s\n", pathname);
else if (unlink(pathname) < 0)
error("unable to unlink %s", pathname);
display_progress(progress, i + 1);
}
pathname[len] = 0;
rmdir(pathname);
}
void prune_packed_objects(int opts)
{
int i;
static char pathname[PATH_MAX];
const char *dir = get_object_directory();
int len = strlen(dir);
if (opts == VERBOSE)
progress = start_progress_delay("Removing duplicate objects",
256, 95, 2);
if (len > PATH_MAX - 42)
die("impossible object directory");
memcpy(pathname, dir, len);
if (len && pathname[len-1] != '/')
pathname[len++] = '/';
for (i = 0; i < 256; i++) {
DIR *d;
display_progress(progress, i + 1);
sprintf(pathname + len, "%02x/", i);
d = opendir(pathname);
if (!d)
continue;
prune_dir(i, d, pathname, len + 3, opts);
closedir(d);
}
stop_progress(&progress);
}
int cmd_prune_packed(int argc, const char **argv, const char *prefix)
{
int i;
int opts = VERBOSE;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg == '-') {
if (!strcmp(arg, "-n"))
opts |= DRY_RUN;
else if (!strcmp(arg, "-q"))
opts &= ~VERBOSE;
else
usage(prune_packed_usage);
continue;
}
/* Handle arguments here .. */
usage(prune_packed_usage);
}
prune_packed_objects(opts);
return 0;
}