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* by Matthew Grant <grantma@anathoth.gen.nz> |
* by Matthew Grant <grantma@anathoth.gen.nz> |
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* |
* |
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* iso-format handling added by Robert Griebl <griebl@gmx.de> |
* iso-format handling added by Robert Griebl <griebl@gmx.de> |
8 |
* bugfixes and cleanup by Bernhard Fischer |
* bugfixes and cleanup by Bernhard Reutner-Fischer |
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* |
* |
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
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*/ |
*/ |
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#include "busybox.h" |
#include "libbb.h" |
14 |
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|
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/* This 'date' command supports only 2 time setting formats, |
/* This 'date' command supports only 2 time setting formats, |
16 |
all the GNU strftime stuff (its in libc, lets use it), |
all the GNU strftime stuff (its in libc, lets use it), |
32 |
#define DATE_OPT_TIMESPEC 0x20 |
#define DATE_OPT_TIMESPEC 0x20 |
33 |
#define DATE_OPT_HINT 0x40 |
#define DATE_OPT_HINT 0x40 |
34 |
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static void xputenv(char *s) |
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{ |
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if (putenv(s) != 0) |
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bb_error_msg_and_die(bb_msg_memory_exhausted); |
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} |
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static void maybe_set_utc(int opt) |
static void maybe_set_utc(int opt) |
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{ |
{ |
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if (opt & DATE_OPT_UTC) |
if (opt & DATE_OPT_UTC) |
38 |
xputenv("TZ=UTC0"); |
putenv((char*)"TZ=UTC0"); |
39 |
} |
} |
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|
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int date_main(int argc, char **argv) |
int date_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
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int date_main(int argc UNUSED_PARAM, char **argv) |
43 |
{ |
{ |
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time_t tm; |
|
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struct tm tm_time; |
struct tm tm_time; |
45 |
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time_t tm; |
46 |
unsigned opt; |
unsigned opt; |
47 |
int ifmt = -1; |
int ifmt = -1; |
48 |
char *date_str = NULL; |
char *date_str; |
49 |
char *date_fmt = NULL; |
char *fmt_dt2str; |
50 |
char *filename = NULL; |
char *fmt_str2dt; |
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char *isofmt_arg; |
char *filename; |
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char *hintfmt_arg; |
char *isofmt_arg = NULL; |
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|
54 |
opt_complementary = "?:d--s:s--d" |
opt_complementary = "d--s:s--d" |
55 |
USE_FEATURE_DATE_ISOFMT(":R--I:I--R"); |
USE_FEATURE_DATE_ISOFMT(":R--I:I--R"); |
56 |
opt = getopt32(argc, argv, "Rs:ud:r:" |
opt = getopt32(argv, "Rs:ud:r:" |
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USE_FEATURE_DATE_ISOFMT("I::D:"), |
USE_FEATURE_DATE_ISOFMT("I::D:"), |
58 |
&date_str, &date_str, &filename |
&date_str, &date_str, &filename |
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USE_FEATURE_DATE_ISOFMT(, &isofmt_arg, &hintfmt_arg)); |
USE_FEATURE_DATE_ISOFMT(, &isofmt_arg, &fmt_str2dt)); |
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argv += optind; |
61 |
maybe_set_utc(opt); |
maybe_set_utc(opt); |
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if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) { |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) { |
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if (!isofmt_arg) { |
ifmt = 0; /* default is date */ |
65 |
ifmt = 0; /* default is date */ |
if (isofmt_arg) { |
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} else { |
static const char isoformats[] ALIGN1 = |
67 |
const char * const isoformats[] = |
"date\0""hours\0""minutes\0""seconds\0"; |
68 |
{"date", "hours", "minutes", "seconds"}; |
ifmt = index_in_strings(isoformats, isofmt_arg); |
69 |
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if (ifmt < 0) |
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for (ifmt = 0; ifmt < 4; ifmt++) |
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if (!strcmp(isofmt_arg, isoformats[ifmt])) { |
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break; |
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} |
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if (ifmt == 4) /* parse error */ |
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bb_show_usage(); |
bb_show_usage(); |
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} |
} |
72 |
} |
} |
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/* XXX, date_fmt == NULL from this always */ |
fmt_dt2str = NULL; |
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if ((date_fmt == NULL) && (optind < argc) && (argv[optind][0] == '+')) { |
if (argv[0] && argv[0][0] == '+') { |
76 |
date_fmt = &argv[optind][1]; /* Skip over the '+' */ |
fmt_dt2str = &argv[0][1]; /* Skip over the '+' */ |
77 |
} else if (date_str == NULL) { |
argv++; |
78 |
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} |
79 |
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if (!(opt & (DATE_OPT_SET | DATE_OPT_DATE))) { |
80 |
opt |= DATE_OPT_SET; |
opt |= DATE_OPT_SET; |
81 |
date_str = argv[optind]; |
date_str = argv[0]; /* can be NULL */ |
82 |
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if (date_str) |
83 |
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argv++; |
84 |
} |
} |
85 |
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if (*argv) |
86 |
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bb_show_usage(); |
87 |
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|
88 |
/* Now we have parsed all the information except the date format |
/* Now we have parsed all the information except the date format |
89 |
which depends on whether the clock is being set or read */ |
which depends on whether the clock is being set or read */ |
90 |
|
|
91 |
if (filename) { |
if (opt & DATE_OPT_REFERENCE) { |
92 |
struct stat statbuf; |
struct stat statbuf; |
93 |
xstat(filename, &statbuf); |
xstat(filename, &statbuf); |
94 |
tm = statbuf.st_mtime; |
tm = statbuf.st_mtime; |
95 |
} else |
} else |
96 |
time(&tm); |
time(&tm); |
97 |
memcpy(&tm_time, localtime(&tm), sizeof(tm_time)); |
memcpy(&tm_time, localtime(&tm), sizeof(tm_time)); |
98 |
/* Zero out fields - take her back to midnight! */ |
|
99 |
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/* If date string is given, update tm_time, and maybe set date */ |
100 |
if (date_str != NULL) { |
if (date_str != NULL) { |
101 |
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/* Zero out fields - take her back to midnight! */ |
102 |
tm_time.tm_sec = 0; |
tm_time.tm_sec = 0; |
103 |
tm_time.tm_min = 0; |
tm_time.tm_min = 0; |
104 |
tm_time.tm_hour = 0; |
tm_time.tm_hour = 0; |
105 |
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|
106 |
/* Process any date input to UNIX time since 1 Jan 1970 */ |
/* Process any date input to UNIX time since 1 Jan 1970 */ |
107 |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) { |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) { |
108 |
strptime(date_str, hintfmt_arg, &tm_time); |
if (strptime(date_str, fmt_str2dt, &tm_time) == NULL) |
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} else if (strchr(date_str, ':') != NULL) { |
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/* Parse input and assign appropriately to tm_time */ |
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if (sscanf(date_str, "%d:%d:%d", &tm_time.tm_hour, &tm_time.tm_min, |
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&tm_time.tm_sec) == 3) { |
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/* no adjustments needed */ |
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} else if (sscanf(date_str, "%d:%d", &tm_time.tm_hour, |
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&tm_time.tm_min) == 2) { |
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/* no adjustments needed */ |
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} else if (sscanf(date_str, "%d.%d-%d:%d:%d", &tm_time.tm_mon, |
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&tm_time.tm_mday, &tm_time.tm_hour, |
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&tm_time.tm_min, &tm_time.tm_sec) == 5) { |
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/* Adjust dates from 1-12 to 0-11 */ |
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tm_time.tm_mon -= 1; |
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} else if (sscanf(date_str, "%d.%d-%d:%d", &tm_time.tm_mon, |
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&tm_time.tm_mday, |
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&tm_time.tm_hour, &tm_time.tm_min) == 4) { |
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/* Adjust dates from 1-12 to 0-11 */ |
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tm_time.tm_mon -= 1; |
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} else if (sscanf(date_str, "%d.%d.%d-%d:%d:%d", &tm_time.tm_year, |
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&tm_time.tm_mon, &tm_time.tm_mday, |
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&tm_time.tm_hour, &tm_time.tm_min, |
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&tm_time.tm_sec) == 6) { |
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tm_time.tm_year -= 1900; /* Adjust years */ |
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tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ |
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} else if (sscanf(date_str, "%d.%d.%d-%d:%d", &tm_time.tm_year, |
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&tm_time.tm_mon, &tm_time.tm_mday, |
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&tm_time.tm_hour, &tm_time.tm_min) == 5) { |
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tm_time.tm_year -= 1900; /* Adjust years */ |
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tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ |
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} else { |
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109 |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
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} |
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110 |
} else { |
} else { |
111 |
int nr; |
char end = '\0'; |
112 |
char *cp; |
const char *last_colon = strrchr(date_str, ':'); |
113 |
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114 |
nr = sscanf(date_str, "%2d%2d%2d%2d%d", &tm_time.tm_mon, |
if (last_colon != NULL) { |
115 |
&tm_time.tm_mday, &tm_time.tm_hour, &tm_time.tm_min, |
/* Parse input and assign appropriately to tm_time */ |
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&tm_time.tm_year); |
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if (nr < 4 || nr > 5) { |
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bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
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} |
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116 |
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117 |
cp = strchr(date_str, '.'); |
if (sscanf(date_str, "%u:%u%c", |
118 |
if (cp) { |
&tm_time.tm_hour, |
119 |
nr = sscanf(cp + 1, "%2d", &tm_time.tm_sec); |
&tm_time.tm_min, |
120 |
if (nr != 1) { |
&end) >= 2) { |
121 |
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/* no adjustments needed */ |
122 |
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} else if (sscanf(date_str, "%u.%u-%u:%u%c", |
123 |
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&tm_time.tm_mon, &tm_time.tm_mday, |
124 |
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&tm_time.tm_hour, &tm_time.tm_min, |
125 |
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&end) >= 4) { |
126 |
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/* Adjust dates from 1-12 to 0-11 */ |
127 |
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tm_time.tm_mon -= 1; |
128 |
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} else if (sscanf(date_str, "%u.%u.%u-%u:%u%c", &tm_time.tm_year, |
129 |
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&tm_time.tm_mon, &tm_time.tm_mday, |
130 |
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&tm_time.tm_hour, &tm_time.tm_min, |
131 |
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&end) >= 5) { |
132 |
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tm_time.tm_year -= 1900; /* Adjust years */ |
133 |
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tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ |
134 |
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} else if (sscanf(date_str, "%u-%u-%u %u:%u%c", &tm_time.tm_year, |
135 |
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&tm_time.tm_mon, &tm_time.tm_mday, |
136 |
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&tm_time.tm_hour, &tm_time.tm_min, |
137 |
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&end) >= 5) { |
138 |
|
tm_time.tm_year -= 1900; /* Adjust years */ |
139 |
|
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ |
140 |
|
//TODO: coreutils 6.9 also accepts "YYYY-MM-DD HH" (no minutes) |
141 |
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} else { |
142 |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
143 |
} |
} |
144 |
|
if (end == ':') { |
145 |
|
if (sscanf(last_colon + 1, "%u%c", &tm_time.tm_sec, &end) == 1) |
146 |
|
end = '\0'; |
147 |
|
/* else end != NUL and we error out */ |
148 |
|
} |
149 |
|
} else { |
150 |
|
if (sscanf(date_str, "%2u%2u%2u%2u%u%c", &tm_time.tm_mon, |
151 |
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&tm_time.tm_mday, &tm_time.tm_hour, &tm_time.tm_min, |
152 |
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&tm_time.tm_year, &end) < 4) |
153 |
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bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
154 |
|
/* correct for century - minor Y2K problem here? */ |
155 |
|
if (tm_time.tm_year >= 1900) { |
156 |
|
tm_time.tm_year -= 1900; |
157 |
|
} |
158 |
|
/* adjust date */ |
159 |
|
tm_time.tm_mon -= 1; |
160 |
|
if (end == '.') { |
161 |
|
if (sscanf(strchr(date_str, '.') + 1, "%u%c", |
162 |
|
&tm_time.tm_sec, &end) == 1) |
163 |
|
end = '\0'; |
164 |
|
/* else end != NUL and we error out */ |
165 |
|
} |
166 |
} |
} |
167 |
|
if (end != '\0') { |
168 |
/* correct for century - minor Y2K problem here? */ |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
|
if (tm_time.tm_year >= 1900) { |
|
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tm_time.tm_year -= 1900; |
|
169 |
} |
} |
|
/* adjust date */ |
|
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tm_time.tm_mon -= 1; |
|
170 |
} |
} |
|
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|
171 |
/* Correct any day of week and day of year etc. fields */ |
/* Correct any day of week and day of year etc. fields */ |
172 |
tm_time.tm_isdst = -1; /* Be sure to recheck dst. */ |
tm_time.tm_isdst = -1; /* Be sure to recheck dst. */ |
173 |
tm = mktime(&tm_time); |
tm = mktime(&tm_time); |
185 |
/* Display output */ |
/* Display output */ |
186 |
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|
187 |
/* Deal with format string */ |
/* Deal with format string */ |
188 |
|
if (fmt_dt2str == NULL) { |
|
if (date_fmt == NULL) { |
|
189 |
int i; |
int i; |
190 |
date_fmt = xzalloc(32); |
fmt_dt2str = xzalloc(32); |
191 |
if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) { |
if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) { |
192 |
strcpy(date_fmt, "%Y-%m-%d"); |
strcpy(fmt_dt2str, "%Y-%m-%d"); |
193 |
if (ifmt > 0) { |
if (ifmt > 0) { |
194 |
i = 8; |
i = 8; |
195 |
date_fmt[i++] = 'T'; |
fmt_dt2str[i++] = 'T'; |
196 |
date_fmt[i++] = '%'; |
fmt_dt2str[i++] = '%'; |
197 |
date_fmt[i++] = 'H'; |
fmt_dt2str[i++] = 'H'; |
198 |
if (ifmt > 1) { |
if (ifmt > 1) { |
199 |
date_fmt[i++] = ':'; |
fmt_dt2str[i++] = ':'; |
200 |
date_fmt[i++] = '%'; |
fmt_dt2str[i++] = '%'; |
201 |
date_fmt[i++] = 'M'; |
fmt_dt2str[i++] = 'M'; |
202 |
|
if (ifmt > 2) { |
203 |
|
fmt_dt2str[i++] = ':'; |
204 |
|
fmt_dt2str[i++] = '%'; |
205 |
|
fmt_dt2str[i++] = 'S'; |
206 |
|
} |
207 |
} |
} |
208 |
if (ifmt > 2) { |
format_utc: |
209 |
date_fmt[i++] = ':'; |
fmt_dt2str[i++] = '%'; |
210 |
date_fmt[i++] = '%'; |
fmt_dt2str[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z'; |
|
date_fmt[i++] = 'S'; |
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} |
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format_utc: |
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date_fmt[i++] = '%'; |
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date_fmt[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z'; |
|
211 |
} |
} |
212 |
} else if (opt & DATE_OPT_RFC2822) { |
} else if (opt & DATE_OPT_RFC2822) { |
213 |
/* Undo busybox.c for date -R */ |
/* Undo busybox.c for date -R */ |
214 |
if (ENABLE_LOCALE_SUPPORT) |
if (ENABLE_LOCALE_SUPPORT) |
215 |
setlocale(LC_TIME, "C"); |
setlocale(LC_TIME, "C"); |
216 |
strcpy(date_fmt, "%a, %d %b %Y %H:%M:%S "); |
strcpy(fmt_dt2str, "%a, %d %b %Y %H:%M:%S "); |
217 |
i = 22; |
i = 22; |
218 |
goto format_utc; |
goto format_utc; |
219 |
} else /* default case */ |
} else /* default case */ |
220 |
date_fmt = "%a %b %e %H:%M:%S %Z %Y"; |
fmt_dt2str = (char*)"%a %b %e %H:%M:%S %Z %Y"; |
221 |
} |
} |
222 |
|
|
223 |
if (*date_fmt == '\0') { |
#define date_buf bb_common_bufsiz1 |
224 |
|
if (*fmt_dt2str == '\0') { |
225 |
/* With no format string, just print a blank line */ |
/* With no format string, just print a blank line */ |
226 |
*bb_common_bufsiz1 = 0; |
date_buf[0] = '\0'; |
227 |
} else { |
} else { |
228 |
/* Handle special conversions */ |
/* Handle special conversions */ |
229 |
|
if (strncmp(fmt_dt2str, "%f", 2) == 0) { |
230 |
if (strncmp(date_fmt, "%f", 2) == 0) { |
fmt_dt2str = (char*)"%Y.%m.%d-%H:%M:%S"; |
|
date_fmt = "%Y.%m.%d-%H:%M:%S"; |
|
231 |
} |
} |
232 |
|
|
233 |
/* Generate output string */ |
/* Generate output string */ |
234 |
strftime(bb_common_bufsiz1, 200, date_fmt, &tm_time); |
strftime(date_buf, sizeof(date_buf), fmt_dt2str, &tm_time); |
235 |
} |
} |
236 |
puts(bb_common_bufsiz1); |
puts(date_buf); |
237 |
|
|
238 |
return EXIT_SUCCESS; |
return EXIT_SUCCESS; |
239 |
} |
} |