t/helper: merge test-chmtime into test-tool
[git/git.git] / t / helper / test-chmtime.c
1 /*
2 * This program can either change modification time of the given
3 * file(s) or just print it. The program does not change atime or
4 * ctime (their values are explicitly preserved).
5 *
6 * The mtime can be changed to an absolute value:
7 *
8 * test-tool chmtime =<seconds> file...
9 *
10 * Relative to the current time as returned by time(3):
11 *
12 * test-tool chmtime =+<seconds> (or =-<seconds>) file...
13 *
14 * Or relative to the current mtime of the file:
15 *
16 * test-tool chmtime <seconds> file...
17 * test-tool chmtime +<seconds> (or -<seconds>) file...
18 *
19 * Examples:
20 *
21 * To just print the mtime use --verbose and set the file mtime offset to 0:
22 *
23 * test-tool chmtime -v +0 file
24 *
25 * To set the mtime to current time:
26 *
27 * test-tool chmtime =+0 file
28 *
29 */
30 #include "test-tool.h"
31 #include "git-compat-util.h"
32 #include <utime.h>
33
34 static const char usage_str[] = "-v|--verbose (+|=|=+|=-|-)<seconds> <file>...";
35
36 static int timespec_arg(const char *arg, long int *set_time, int *set_eq)
37 {
38 char *test;
39 const char *timespec = arg;
40 *set_eq = (*timespec == '=') ? 1 : 0;
41 if (*set_eq) {
42 timespec++;
43 if (*timespec == '+') {
44 *set_eq = 2; /* relative "in the future" */
45 timespec++;
46 }
47 }
48 *set_time = strtol(timespec, &test, 10);
49 if (*test) {
50 fprintf(stderr, "Not a base-10 integer: %s\n", arg + 1);
51 return 0;
52 }
53 if ((*set_eq && *set_time < 0) || *set_eq == 2) {
54 time_t now = time(NULL);
55 *set_time += now;
56 }
57 return 1;
58 }
59
60 int cmd__chmtime(int argc, const char **argv)
61 {
62 static int verbose;
63
64 int i = 1;
65 /* no mtime change by default */
66 int set_eq = 0;
67 long int set_time = 0;
68
69 if (argc < 3)
70 goto usage;
71
72 if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) {
73 verbose = 1;
74 ++i;
75 }
76 if (timespec_arg(argv[i], &set_time, &set_eq))
77 ++i;
78 else
79 goto usage;
80
81 for (; i < argc; i++) {
82 struct stat sb;
83 struct utimbuf utb;
84
85 if (stat(argv[i], &sb) < 0) {
86 fprintf(stderr, "Failed to stat %s: %s\n",
87 argv[i], strerror(errno));
88 return 1;
89 }
90
91 #ifdef GIT_WINDOWS_NATIVE
92 if (!(sb.st_mode & S_IWUSR) &&
93 chmod(argv[i], sb.st_mode | S_IWUSR)) {
94 fprintf(stderr, "Could not make user-writable %s: %s",
95 argv[i], strerror(errno));
96 return 1;
97 }
98 #endif
99
100 utb.actime = sb.st_atime;
101 utb.modtime = set_eq ? set_time : sb.st_mtime + set_time;
102
103 if (verbose) {
104 uintmax_t mtime = utb.modtime < 0 ? 0: utb.modtime;
105 printf("%"PRIuMAX"\t%s\n", mtime, argv[i]);
106 }
107
108 if (utb.modtime != sb.st_mtime && utime(argv[i], &utb) < 0) {
109 fprintf(stderr, "Failed to modify time on %s: %s\n",
110 argv[i], strerror(errno));
111 return 1;
112 }
113 }
114
115 return 0;
116
117 usage:
118 fprintf(stderr, "usage: %s %s\n", argv[0], usage_str);
119 return 1;
120 }