]>
Commit | Line | Data |
---|---|---|
0ea9ca07 AR |
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 nor | |
4 | * ctime (their values are explicitely preserved). | |
5 | * | |
6 | * The mtime can be changed to an absolute value: | |
7 | * | |
8 | * test-chmtime =<seconds> file... | |
9 | * | |
10 | * Relative to the current time as returned by time(3): | |
11 | * | |
12 | * test-chmtime =+<seconds> (or =-<seconds>) file... | |
13 | * | |
14 | * Or relative to the current mtime of the file: | |
15 | * | |
16 | * test-chmtime <seconds> file... | |
17 | * test-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-chmtime -v +0 file | |
24 | * | |
25 | * To set the mtime to current time: | |
26 | * | |
27 | * test-chmtime =+0 file | |
28 | * | |
29 | */ | |
17e48368 EW |
30 | #include "git-compat-util.h" |
31 | #include <utime.h> | |
32 | ||
0ea9ca07 | 33 | static const char usage_str[] = "-v|--verbose (+|=|=+|=-|-)<seconds> <file>..."; |
17e48368 | 34 | |
0ea9ca07 | 35 | static int timespec_arg(const char *arg, long int *set_time, int *set_eq) |
17e48368 | 36 | { |
17e48368 | 37 | char *test; |
0ea9ca07 AR |
38 | const char *timespec = arg; |
39 | *set_eq = (*timespec == '=') ? 1 : 0; | |
40 | if (*set_eq) { | |
17e48368 EW |
41 | timespec++; |
42 | if (*timespec == '+') { | |
0ea9ca07 | 43 | *set_eq = 2; /* relative "in the future" */ |
17e48368 EW |
44 | timespec++; |
45 | } | |
46 | } | |
0ea9ca07 | 47 | *set_time = strtol(timespec, &test, 10); |
17e48368 | 48 | if (*test) { |
0ea9ca07 AR |
49 | fprintf(stderr, "Not a base-10 integer: %s\n", arg + 1); |
50 | return 0; | |
17e48368 | 51 | } |
0ea9ca07 | 52 | if ((*set_eq && *set_time < 0) || *set_eq == 2) { |
17e48368 | 53 | time_t now = time(NULL); |
0ea9ca07 | 54 | *set_time += now; |
17e48368 | 55 | } |
0ea9ca07 AR |
56 | return 1; |
57 | } | |
58 | ||
59 | int main(int argc, const char *argv[]) | |
60 | { | |
61 | static int verbose; | |
17e48368 | 62 | |
0ea9ca07 AR |
63 | int i = 1; |
64 | /* no mtime change by default */ | |
65 | int set_eq = 0; | |
66 | long int set_time = 0; | |
67 | ||
68 | if (argc < 3) | |
69 | goto usage; | |
70 | ||
71 | if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) { | |
72 | verbose = 1; | |
73 | ++i; | |
74 | } | |
75 | if (timespec_arg(argv[i], &set_time, &set_eq)) | |
76 | ++i; | |
77 | else | |
78 | goto usage; | |
79 | ||
80 | for (; i < argc; i++) { | |
17e48368 EW |
81 | struct stat sb; |
82 | struct utimbuf utb; | |
83 | ||
84 | if (stat(argv[i], &sb) < 0) { | |
85 | fprintf(stderr, "Failed to stat %s: %s\n", | |
86 | argv[i], strerror(errno)); | |
87 | return -1; | |
88 | } | |
89 | ||
d9b26333 JS |
90 | #ifdef WIN32 |
91 | if (!(sb.st_mode & S_IWUSR) && | |
92 | chmod(argv[i], sb.st_mode | S_IWUSR)) { | |
93 | fprintf(stderr, "Could not make user-writable %s: %s", | |
94 | argv[i], strerror(errno)); | |
95 | return -1; | |
96 | } | |
97 | #endif | |
98 | ||
17e48368 EW |
99 | utb.actime = sb.st_atime; |
100 | utb.modtime = set_eq ? set_time : sb.st_mtime + set_time; | |
101 | ||
0ea9ca07 AR |
102 | if (verbose) { |
103 | uintmax_t mtime = utb.modtime < 0 ? 0: utb.modtime; | |
104 | printf("%"PRIuMAX"\t%s\n", mtime, argv[i]); | |
105 | } | |
106 | ||
107 | if (utb.modtime != sb.st_mtime && utime(argv[i], &utb) < 0) { | |
17e48368 EW |
108 | fprintf(stderr, "Failed to modify time on %s: %s\n", |
109 | argv[i], strerror(errno)); | |
110 | return -1; | |
111 | } | |
112 | } | |
113 | ||
114 | return 0; | |
115 | ||
116 | usage: | |
117 | fprintf(stderr, "Usage: %s %s\n", argv[0], usage_str); | |
118 | return -1; | |
119 | } |