mirror of
https://github.com/git/git.git
synced 2024-11-24 18:33:43 +08:00
0ea9ca07aa
This allows us replace perl when getting the mtime of a file because
of time zone conversions, though at the moment only one platform which
does this has been identified: Cygwin when used with ActiveState Perl
(as usual).
The output format is:
<mtime1> TAB <filename1> <LF>
<mtime2> TAB <filename2> <LF>
...
which, if only mtime is needed can be parsed with cut(1):
test-chmtime -v +0 filename1 | cut -f 1
Also, the change adds a description of programs features, with examples.
Signed-off-by: Alex Riesen <ariesen@harmanbecker.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
/*
|
|
* This program can either change modification time of the given
|
|
* file(s) or just print it. The program does not change atime nor
|
|
* ctime (their values are explicitely preserved).
|
|
*
|
|
* The mtime can be changed to an absolute value:
|
|
*
|
|
* test-chmtime =<seconds> file...
|
|
*
|
|
* Relative to the current time as returned by time(3):
|
|
*
|
|
* test-chmtime =+<seconds> (or =-<seconds>) file...
|
|
*
|
|
* Or relative to the current mtime of the file:
|
|
*
|
|
* test-chmtime <seconds> file...
|
|
* test-chmtime +<seconds> (or -<seconds>) file...
|
|
*
|
|
* Examples:
|
|
*
|
|
* To just print the mtime use --verbose and set the file mtime offset to 0:
|
|
*
|
|
* test-chmtime -v +0 file
|
|
*
|
|
* To set the mtime to current time:
|
|
*
|
|
* test-chmtime =+0 file
|
|
*
|
|
*/
|
|
#include "git-compat-util.h"
|
|
#include <utime.h>
|
|
|
|
static const char usage_str[] = "-v|--verbose (+|=|=+|=-|-)<seconds> <file>...";
|
|
|
|
static int timespec_arg(const char *arg, long int *set_time, int *set_eq)
|
|
{
|
|
char *test;
|
|
const char *timespec = arg;
|
|
*set_eq = (*timespec == '=') ? 1 : 0;
|
|
if (*set_eq) {
|
|
timespec++;
|
|
if (*timespec == '+') {
|
|
*set_eq = 2; /* relative "in the future" */
|
|
timespec++;
|
|
}
|
|
}
|
|
*set_time = strtol(timespec, &test, 10);
|
|
if (*test) {
|
|
fprintf(stderr, "Not a base-10 integer: %s\n", arg + 1);
|
|
return 0;
|
|
}
|
|
if ((*set_eq && *set_time < 0) || *set_eq == 2) {
|
|
time_t now = time(NULL);
|
|
*set_time += now;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, const char *argv[])
|
|
{
|
|
static int verbose;
|
|
|
|
int i = 1;
|
|
/* no mtime change by default */
|
|
int set_eq = 0;
|
|
long int set_time = 0;
|
|
|
|
if (argc < 3)
|
|
goto usage;
|
|
|
|
if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) {
|
|
verbose = 1;
|
|
++i;
|
|
}
|
|
if (timespec_arg(argv[i], &set_time, &set_eq))
|
|
++i;
|
|
else
|
|
goto usage;
|
|
|
|
for (; i < argc; i++) {
|
|
struct stat sb;
|
|
struct utimbuf utb;
|
|
|
|
if (stat(argv[i], &sb) < 0) {
|
|
fprintf(stderr, "Failed to stat %s: %s\n",
|
|
argv[i], strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
utb.actime = sb.st_atime;
|
|
utb.modtime = set_eq ? set_time : sb.st_mtime + set_time;
|
|
|
|
if (verbose) {
|
|
uintmax_t mtime = utb.modtime < 0 ? 0: utb.modtime;
|
|
printf("%"PRIuMAX"\t%s\n", mtime, argv[i]);
|
|
}
|
|
|
|
if (utb.modtime != sb.st_mtime && utime(argv[i], &utb) < 0) {
|
|
fprintf(stderr, "Failed to modify time on %s: %s\n",
|
|
argv[i], strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
usage:
|
|
fprintf(stderr, "Usage: %s %s\n", argv[0], usage_str);
|
|
return -1;
|
|
}
|