зеркало из https://github.com/microsoft/git.git
149 строки
3.1 KiB
C
149 строки
3.1 KiB
C
/*
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* This program can either change modification time of the given
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* file(s) or just print it. The program does not change atime or
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* ctime (their values are explicitly preserved).
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*
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* The mtime can be changed to an absolute value:
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*
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* test-tool chmtime =<seconds> file...
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*
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* Relative to the current time as returned by time(3):
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*
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* test-tool chmtime =+<seconds> (or =-<seconds>) file...
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*
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* Or relative to the current mtime of the file:
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*
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* test-tool chmtime <seconds> file...
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* test-tool chmtime +<seconds> (or -<seconds>) file...
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*
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* Examples:
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*
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* To print the mtime and the file name use --verbose and set
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* the file mtime offset to 0:
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*
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* test-tool chmtime -v +0 file
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*
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* To print only the mtime use --get:
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*
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* test-tool chmtime --get file
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*
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* To set the mtime to current time:
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*
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* test-tool chmtime =+0 file
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*
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* To set the file mtime offset to +1 and print the new value:
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*
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* test-tool chmtime --get +1 file
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*
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*/
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#include "test-tool.h"
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#include "git-compat-util.h"
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#include <utime.h>
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static const char usage_str[] =
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"(-v|--verbose|-g|--get) (+|=|=+|=-|-)<seconds> <file>...";
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static int timespec_arg(const char *arg, long int *set_time, int *set_eq)
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{
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char *test;
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const char *timespec = arg;
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*set_eq = (*timespec == '=') ? 1 : 0;
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if (*set_eq) {
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timespec++;
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if (*timespec == '+') {
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*set_eq = 2; /* relative "in the future" */
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timespec++;
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}
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}
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*set_time = strtol(timespec, &test, 10);
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if (*test) {
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return 0;
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}
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if ((*set_eq && *set_time < 0) || *set_eq == 2) {
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time_t now = time(NULL);
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*set_time += now;
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}
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return 1;
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}
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int cmd__chmtime(int argc, const char **argv)
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{
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static int verbose;
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static int get;
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int i = 1;
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/* no mtime change by default */
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int set_eq = 0;
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long int set_time = 0;
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if (argc < 3)
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goto usage;
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if (strcmp(argv[i], "--get") == 0 || strcmp(argv[i], "-g") == 0) {
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get = 1;
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++i;
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} else if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) {
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verbose = 1;
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++i;
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}
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if (i == argc) {
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goto usage;
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}
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if (timespec_arg(argv[i], &set_time, &set_eq)) {
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++i;
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} else {
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if (get == 0) {
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fprintf(stderr, "Not a base-10 integer: %s\n", argv[i] + 1);
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goto usage;
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}
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}
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if (i == argc)
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goto usage;
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for (; i < argc; i++) {
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struct stat sb;
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struct utimbuf utb;
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uintmax_t mtime;
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if (stat(argv[i], &sb) < 0) {
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fprintf(stderr, "Failed to stat %s: %s\n",
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argv[i], strerror(errno));
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return 1;
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}
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#ifdef GIT_WINDOWS_NATIVE
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if (!(sb.st_mode & S_IWUSR) &&
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chmod(argv[i], sb.st_mode | S_IWUSR)) {
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fprintf(stderr, "Could not make user-writable %s: %s",
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argv[i], strerror(errno));
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return 1;
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}
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#endif
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utb.actime = sb.st_atime;
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utb.modtime = set_eq ? set_time : sb.st_mtime + set_time;
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mtime = utb.modtime < 0 ? 0: utb.modtime;
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if (get) {
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printf("%"PRIuMAX"\n", mtime);
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} else if (verbose) {
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printf("%"PRIuMAX"\t%s\n", mtime, argv[i]);
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}
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if (utb.modtime != sb.st_mtime && utime(argv[i], &utb) < 0) {
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fprintf(stderr, "Failed to modify time on %s: %s\n",
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argv[i], strerror(errno));
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return 1;
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}
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}
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return 0;
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usage:
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fprintf(stderr, "usage: %s %s\n", argv[0], usage_str);
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return 1;
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}
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