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Commit | Line | Data |
---|---|---|
ecee9d9e ET |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | */ | |
6 | ||
e99d59ff LT |
7 | #include "cache.h" |
8 | ||
bb5799d6 JS |
9 | /* |
10 | * This is like mktime, but without normalization of tm_wday and tm_yday. | |
11 | */ | |
23418ea9 | 12 | static time_t tm_to_time_t(const struct tm *tm) |
ecee9d9e ET |
13 | { |
14 | static const int mdays[] = { | |
15 | 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 | |
16 | }; | |
17 | int year = tm->tm_year - 70; | |
18 | int month = tm->tm_mon; | |
19 | int day = tm->tm_mday; | |
20 | ||
21 | if (year < 0 || year > 129) /* algo only works for 1970-2099 */ | |
22 | return -1; | |
23 | if (month < 0 || month > 11) /* array bounds */ | |
24 | return -1; | |
25 | if (month < 2 || (year + 2) % 4) | |
26 | day--; | |
36e4986f LT |
27 | if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0) |
28 | return -1; | |
ecee9d9e ET |
29 | return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL + |
30 | tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec; | |
31 | } | |
32 | ||
33 | static const char *month_names[] = { | |
89967023 LT |
34 | "January", "February", "March", "April", "May", "June", |
35 | "July", "August", "September", "October", "November", "December" | |
ecee9d9e ET |
36 | }; |
37 | ||
38 | static const char *weekday_names[] = { | |
6b7b0427 | 39 | "Sundays", "Mondays", "Tuesdays", "Wednesdays", "Thursdays", "Fridays", "Saturdays" |
ecee9d9e ET |
40 | }; |
41 | ||
9a8e35e9 LT |
42 | static time_t gm_time_t(unsigned long time, int tz) |
43 | { | |
44 | int minutes; | |
45 | ||
46 | minutes = tz < 0 ? -tz : tz; | |
47 | minutes = (minutes / 100)*60 + (minutes % 100); | |
48 | minutes = tz < 0 ? -minutes : minutes; | |
49 | return time + minutes * 60; | |
50 | } | |
51 | ||
f80cd783 LT |
52 | /* |
53 | * The "tz" thing is passed in as this strange "decimal parse of tz" | |
54 | * thing, which means that tz -0100 is passed in as the integer -100, | |
55 | * even though it means "sixty minutes off" | |
56 | */ | |
2a387043 | 57 | static struct tm *time_to_tm(unsigned long time, int tz) |
f80cd783 | 58 | { |
9a8e35e9 | 59 | time_t t = gm_time_t(time, tz); |
2a387043 JH |
60 | return gmtime(&t); |
61 | } | |
62 | ||
a7b02ccf JH |
63 | /* |
64 | * What value of "tz" was in effect back then at "time" in the | |
65 | * local timezone? | |
66 | */ | |
67 | static int local_tzoffset(unsigned long time) | |
68 | { | |
69 | time_t t, t_local; | |
70 | struct tm tm; | |
71 | int offset, eastwest; | |
72 | ||
73 | t = time; | |
74 | localtime_r(&t, &tm); | |
bb5799d6 | 75 | t_local = tm_to_time_t(&tm); |
a7b02ccf JH |
76 | |
77 | if (t_local < t) { | |
78 | eastwest = -1; | |
79 | offset = t - t_local; | |
80 | } else { | |
81 | eastwest = 1; | |
82 | offset = t_local - t; | |
83 | } | |
84 | offset /= 60; /* in minutes */ | |
85 | offset = (offset % 60) + ((offset / 60) * 100); | |
86 | return offset * eastwest; | |
87 | } | |
88 | ||
7d29afd4 | 89 | void show_date_relative(unsigned long time, int tz, |
33012fc4 | 90 | const struct timeval *now, |
7d29afd4 | 91 | struct strbuf *timebuf) |
33012fc4 AR |
92 | { |
93 | unsigned long diff; | |
7d29afd4 JN |
94 | if (now->tv_sec < time) { |
95 | strbuf_addstr(timebuf, _("in the future")); | |
96 | return; | |
97 | } | |
33012fc4 AR |
98 | diff = now->tv_sec - time; |
99 | if (diff < 90) { | |
7d29afd4 JN |
100 | strbuf_addf(timebuf, |
101 | Q_("%lu second ago", "%lu seconds ago", diff), diff); | |
102 | return; | |
33012fc4 AR |
103 | } |
104 | /* Turn it into minutes */ | |
105 | diff = (diff + 30) / 60; | |
106 | if (diff < 90) { | |
7d29afd4 JN |
107 | strbuf_addf(timebuf, |
108 | Q_("%lu minute ago", "%lu minutes ago", diff), diff); | |
109 | return; | |
33012fc4 AR |
110 | } |
111 | /* Turn it into hours */ | |
112 | diff = (diff + 30) / 60; | |
113 | if (diff < 36) { | |
7d29afd4 JN |
114 | strbuf_addf(timebuf, |
115 | Q_("%lu hour ago", "%lu hours ago", diff), diff); | |
116 | return; | |
33012fc4 AR |
117 | } |
118 | /* We deal with number of days from here on */ | |
119 | diff = (diff + 12) / 24; | |
120 | if (diff < 14) { | |
7d29afd4 JN |
121 | strbuf_addf(timebuf, |
122 | Q_("%lu day ago", "%lu days ago", diff), diff); | |
123 | return; | |
33012fc4 AR |
124 | } |
125 | /* Say weeks for the past 10 weeks or so */ | |
126 | if (diff < 70) { | |
7d29afd4 JN |
127 | strbuf_addf(timebuf, |
128 | Q_("%lu week ago", "%lu weeks ago", (diff + 3) / 7), | |
129 | (diff + 3) / 7); | |
130 | return; | |
33012fc4 AR |
131 | } |
132 | /* Say months for the past 12 months or so */ | |
dbc1b1f7 | 133 | if (diff < 365) { |
7d29afd4 JN |
134 | strbuf_addf(timebuf, |
135 | Q_("%lu month ago", "%lu months ago", (diff + 15) / 30), | |
136 | (diff + 15) / 30); | |
137 | return; | |
33012fc4 AR |
138 | } |
139 | /* Give years and months for 5 years or so */ | |
140 | if (diff < 1825) { | |
f1e9c548 MG |
141 | unsigned long totalmonths = (diff * 12 * 2 + 365) / (365 * 2); |
142 | unsigned long years = totalmonths / 12; | |
143 | unsigned long months = totalmonths % 12; | |
7d29afd4 JN |
144 | if (months) { |
145 | struct strbuf sb = STRBUF_INIT; | |
146 | strbuf_addf(&sb, Q_("%lu year", "%lu years", years), years); | |
7d29afd4 | 147 | strbuf_addf(timebuf, |
fcaed04d | 148 | /* TRANSLATORS: "%s" is "<n> years" */ |
7d29afd4 JN |
149 | Q_("%s, %lu month ago", "%s, %lu months ago", months), |
150 | sb.buf, months); | |
151 | strbuf_release(&sb); | |
152 | } else | |
153 | strbuf_addf(timebuf, | |
154 | Q_("%lu year ago", "%lu years ago", years), years); | |
155 | return; | |
33012fc4 AR |
156 | } |
157 | /* Otherwise, just years. Centuries is probably overkill. */ | |
7d29afd4 JN |
158 | strbuf_addf(timebuf, |
159 | Q_("%lu year ago", "%lu years ago", (diff + 183) / 365), | |
160 | (diff + 183) / 365); | |
33012fc4 AR |
161 | } |
162 | ||
f8493ec0 | 163 | const char *show_date(unsigned long time, int tz, enum date_mode mode) |
2a387043 JH |
164 | { |
165 | struct tm *tm; | |
7d29afd4 | 166 | static struct strbuf timebuf = STRBUF_INIT; |
2a387043 | 167 | |
7dff9b30 | 168 | if (mode == DATE_RAW) { |
7d29afd4 JN |
169 | strbuf_reset(&timebuf); |
170 | strbuf_addf(&timebuf, "%lu %+05d", time, tz); | |
171 | return timebuf.buf; | |
7dff9b30 LT |
172 | } |
173 | ||
f8493ec0 | 174 | if (mode == DATE_RELATIVE) { |
9a8e35e9 | 175 | struct timeval now; |
7d29afd4 JN |
176 | |
177 | strbuf_reset(&timebuf); | |
9a8e35e9 | 178 | gettimeofday(&now, NULL); |
7d29afd4 JN |
179 | show_date_relative(time, tz, &now, &timebuf); |
180 | return timebuf.buf; | |
9a8e35e9 LT |
181 | } |
182 | ||
a7b02ccf JH |
183 | if (mode == DATE_LOCAL) |
184 | tz = local_tzoffset(time); | |
185 | ||
2a387043 | 186 | tm = time_to_tm(time, tz); |
2b15846d JK |
187 | if (!tm) { |
188 | tm = time_to_tm(0, 0); | |
189 | tz = 0; | |
190 | } | |
7d29afd4 JN |
191 | |
192 | strbuf_reset(&timebuf); | |
f8493ec0 | 193 | if (mode == DATE_SHORT) |
7d29afd4 | 194 | strbuf_addf(&timebuf, "%04d-%02d-%02d", tm->tm_year + 1900, |
f8493ec0 | 195 | tm->tm_mon + 1, tm->tm_mday); |
ee8f838e | 196 | else if (mode == DATE_ISO8601) |
7d29afd4 | 197 | strbuf_addf(&timebuf, "%04d-%02d-%02d %02d:%02d:%02d %+05d", |
ee8f838e RR |
198 | tm->tm_year + 1900, |
199 | tm->tm_mon + 1, | |
200 | tm->tm_mday, | |
201 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
202 | tz); | |
466fb674 BB |
203 | else if (mode == DATE_ISO8601_STRICT) { |
204 | char sign = (tz >= 0) ? '+' : '-'; | |
205 | tz = abs(tz); | |
206 | strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d%c%02d:%02d", | |
207 | tm->tm_year + 1900, | |
208 | tm->tm_mon + 1, | |
209 | tm->tm_mday, | |
210 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
211 | sign, tz / 100, tz % 100); | |
212 | } else if (mode == DATE_RFC2822) | |
7d29afd4 | 213 | strbuf_addf(&timebuf, "%.3s, %d %.3s %d %02d:%02d:%02d %+05d", |
73013afd JH |
214 | weekday_names[tm->tm_wday], tm->tm_mday, |
215 | month_names[tm->tm_mon], tm->tm_year + 1900, | |
216 | tm->tm_hour, tm->tm_min, tm->tm_sec, tz); | |
f8493ec0 | 217 | else |
7d29afd4 | 218 | strbuf_addf(&timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d", |
f8493ec0 JS |
219 | weekday_names[tm->tm_wday], |
220 | month_names[tm->tm_mon], | |
221 | tm->tm_mday, | |
222 | tm->tm_hour, tm->tm_min, tm->tm_sec, | |
a7b02ccf JH |
223 | tm->tm_year + 1900, |
224 | (mode == DATE_LOCAL) ? 0 : ' ', | |
225 | tz); | |
7d29afd4 | 226 | return timebuf.buf; |
f80cd783 LT |
227 | } |
228 | ||
89967023 LT |
229 | /* |
230 | * Check these. And note how it doesn't do the summer-time conversion. | |
231 | * | |
232 | * In my world, it's always summer, and things are probably a bit off | |
233 | * in other ways too. | |
234 | */ | |
235 | static const struct { | |
236 | const char *name; | |
237 | int offset; | |
5e2a78a4 | 238 | int dst; |
89967023 | 239 | } timezone_names[] = { |
5e2a78a4 LT |
240 | { "IDLW", -12, 0, }, /* International Date Line West */ |
241 | { "NT", -11, 0, }, /* Nome */ | |
242 | { "CAT", -10, 0, }, /* Central Alaska */ | |
243 | { "HST", -10, 0, }, /* Hawaii Standard */ | |
244 | { "HDT", -10, 1, }, /* Hawaii Daylight */ | |
245 | { "YST", -9, 0, }, /* Yukon Standard */ | |
246 | { "YDT", -9, 1, }, /* Yukon Daylight */ | |
247 | { "PST", -8, 0, }, /* Pacific Standard */ | |
248 | { "PDT", -8, 1, }, /* Pacific Daylight */ | |
249 | { "MST", -7, 0, }, /* Mountain Standard */ | |
250 | { "MDT", -7, 1, }, /* Mountain Daylight */ | |
251 | { "CST", -6, 0, }, /* Central Standard */ | |
252 | { "CDT", -6, 1, }, /* Central Daylight */ | |
253 | { "EST", -5, 0, }, /* Eastern Standard */ | |
254 | { "EDT", -5, 1, }, /* Eastern Daylight */ | |
255 | { "AST", -3, 0, }, /* Atlantic Standard */ | |
256 | { "ADT", -3, 1, }, /* Atlantic Daylight */ | |
257 | { "WAT", -1, 0, }, /* West Africa */ | |
258 | ||
259 | { "GMT", 0, 0, }, /* Greenwich Mean */ | |
260 | { "UTC", 0, 0, }, /* Universal (Coordinated) */ | |
75b37e70 | 261 | { "Z", 0, 0, }, /* Zulu, alias for UTC */ |
5e2a78a4 LT |
262 | |
263 | { "WET", 0, 0, }, /* Western European */ | |
264 | { "BST", 0, 1, }, /* British Summer */ | |
265 | { "CET", +1, 0, }, /* Central European */ | |
266 | { "MET", +1, 0, }, /* Middle European */ | |
267 | { "MEWT", +1, 0, }, /* Middle European Winter */ | |
268 | { "MEST", +1, 1, }, /* Middle European Summer */ | |
269 | { "CEST", +1, 1, }, /* Central European Summer */ | |
270 | { "MESZ", +1, 1, }, /* Middle European Summer */ | |
271 | { "FWT", +1, 0, }, /* French Winter */ | |
272 | { "FST", +1, 1, }, /* French Summer */ | |
273 | { "EET", +2, 0, }, /* Eastern Europe, USSR Zone 1 */ | |
92e2311b | 274 | { "EEST", +2, 1, }, /* Eastern European Daylight */ |
5e2a78a4 LT |
275 | { "WAST", +7, 0, }, /* West Australian Standard */ |
276 | { "WADT", +7, 1, }, /* West Australian Daylight */ | |
277 | { "CCT", +8, 0, }, /* China Coast, USSR Zone 7 */ | |
278 | { "JST", +9, 0, }, /* Japan Standard, USSR Zone 8 */ | |
279 | { "EAST", +10, 0, }, /* Eastern Australian Standard */ | |
280 | { "EADT", +10, 1, }, /* Eastern Australian Daylight */ | |
281 | { "GST", +10, 0, }, /* Guam Standard, USSR Zone 9 */ | |
695ed472 SD |
282 | { "NZT", +12, 0, }, /* New Zealand */ |
283 | { "NZST", +12, 0, }, /* New Zealand Standard */ | |
284 | { "NZDT", +12, 1, }, /* New Zealand Daylight */ | |
5e2a78a4 | 285 | { "IDLE", +12, 0, }, /* International Date Line East */ |
89967023 | 286 | }; |
ecee9d9e | 287 | |
89967023 | 288 | static int match_string(const char *date, const char *str) |
ecee9d9e | 289 | { |
89967023 LT |
290 | int i = 0; |
291 | ||
292 | for (i = 0; *date; date++, str++, i++) { | |
293 | if (*date == *str) | |
294 | continue; | |
295 | if (toupper(*date) == toupper(*str)) | |
296 | continue; | |
297 | if (!isalnum(*date)) | |
298 | break; | |
299 | return 0; | |
300 | } | |
301 | return i; | |
ecee9d9e ET |
302 | } |
303 | ||
68849b54 LT |
304 | static int skip_alpha(const char *date) |
305 | { | |
306 | int i = 0; | |
307 | do { | |
308 | i++; | |
309 | } while (isalpha(date[i])); | |
310 | return i; | |
311 | } | |
312 | ||
89967023 LT |
313 | /* |
314 | * Parse month, weekday, or timezone name | |
315 | */ | |
316 | static int match_alpha(const char *date, struct tm *tm, int *offset) | |
ecee9d9e | 317 | { |
89967023 | 318 | int i; |
ecee9d9e | 319 | |
89967023 LT |
320 | for (i = 0; i < 12; i++) { |
321 | int match = match_string(date, month_names[i]); | |
322 | if (match >= 3) { | |
323 | tm->tm_mon = i; | |
324 | return match; | |
ecee9d9e | 325 | } |
89967023 | 326 | } |
ecee9d9e | 327 | |
89967023 LT |
328 | for (i = 0; i < 7; i++) { |
329 | int match = match_string(date, weekday_names[i]); | |
330 | if (match >= 3) { | |
331 | tm->tm_wday = i; | |
332 | return match; | |
333 | } | |
334 | } | |
ecee9d9e | 335 | |
b4f2a6ac | 336 | for (i = 0; i < ARRAY_SIZE(timezone_names); i++) { |
89967023 | 337 | int match = match_string(date, timezone_names[i].name); |
75b37e70 | 338 | if (match >= 3 || match == strlen(timezone_names[i].name)) { |
5e2a78a4 LT |
339 | int off = timezone_names[i].offset; |
340 | ||
341 | /* This is bogus, but we like summer */ | |
342 | off += timezone_names[i].dst; | |
343 | ||
92e2311b LT |
344 | /* Only use the tz name offset if we don't have anything better */ |
345 | if (*offset == -1) | |
346 | *offset = 60*off; | |
347 | ||
89967023 | 348 | return match; |
ecee9d9e ET |
349 | } |
350 | } | |
ecee9d9e | 351 | |
68849b54 | 352 | if (match_string(date, "PM") == 2) { |
18b633ca LT |
353 | tm->tm_hour = (tm->tm_hour % 12) + 12; |
354 | return 2; | |
355 | } | |
356 | ||
357 | if (match_string(date, "AM") == 2) { | |
358 | tm->tm_hour = (tm->tm_hour % 12) + 0; | |
68849b54 LT |
359 | return 2; |
360 | } | |
361 | ||
89967023 | 362 | /* BAD CRAP */ |
68849b54 | 363 | return skip_alpha(date); |
89967023 | 364 | } |
ecee9d9e | 365 | |
38035cf4 | 366 | static int is_date(int year, int month, int day, struct tm *now_tm, time_t now, struct tm *tm) |
89967023 | 367 | { |
198b0fb6 | 368 | if (month > 0 && month < 13 && day > 0 && day < 32) { |
38035cf4 JH |
369 | struct tm check = *tm; |
370 | struct tm *r = (now_tm ? &check : tm); | |
371 | time_t specified; | |
372 | ||
373 | r->tm_mon = month - 1; | |
374 | r->tm_mday = day; | |
198b0fb6 | 375 | if (year == -1) { |
38035cf4 JH |
376 | if (!now_tm) |
377 | return 1; | |
378 | r->tm_year = now_tm->tm_year; | |
89967023 | 379 | } |
38035cf4 JH |
380 | else if (year >= 1970 && year < 2100) |
381 | r->tm_year = year - 1900; | |
382 | else if (year > 70 && year < 100) | |
383 | r->tm_year = year; | |
384 | else if (year < 38) | |
385 | r->tm_year = year + 100; | |
386 | else | |
198b0fb6 | 387 | return 0; |
38035cf4 JH |
388 | if (!now_tm) |
389 | return 1; | |
390 | ||
bb5799d6 | 391 | specified = tm_to_time_t(r); |
198b0fb6 | 392 | |
38035cf4 JH |
393 | /* Be it commit time or author time, it does not make |
394 | * sense to specify timestamp way into the future. Make | |
395 | * sure it is not later than ten days from now... | |
396 | */ | |
e6e87516 | 397 | if ((specified != -1) && (now + 10*24*3600 < specified)) |
38035cf4 JH |
398 | return 0; |
399 | tm->tm_mon = r->tm_mon; | |
400 | tm->tm_mday = r->tm_mday; | |
401 | if (year != -1) | |
402 | tm->tm_year = r->tm_year; | |
198b0fb6 | 403 | return 1; |
89967023 | 404 | } |
198b0fb6 LT |
405 | return 0; |
406 | } | |
ecee9d9e | 407 | |
26a2d8ae | 408 | static int match_multi_number(unsigned long num, char c, const char *date, char *end, struct tm *tm) |
198b0fb6 | 409 | { |
38035cf4 JH |
410 | time_t now; |
411 | struct tm now_tm; | |
412 | struct tm *refuse_future; | |
198b0fb6 LT |
413 | long num2, num3; |
414 | ||
415 | num2 = strtol(end+1, &end, 10); | |
416 | num3 = -1; | |
417 | if (*end == c && isdigit(end[1])) | |
418 | num3 = strtol(end+1, &end, 10); | |
419 | ||
420 | /* Time? Date? */ | |
89967023 | 421 | switch (c) { |
198b0fb6 LT |
422 | case ':': |
423 | if (num3 < 0) | |
424 | num3 = 0; | |
425 | if (num < 25 && num2 >= 0 && num2 < 60 && num3 >= 0 && num3 <= 60) { | |
426 | tm->tm_hour = num; | |
427 | tm->tm_min = num2; | |
428 | tm->tm_sec = num3; | |
89967023 LT |
429 | break; |
430 | } | |
198b0fb6 | 431 | return 0; |
89967023 LT |
432 | |
433 | case '-': | |
434 | case '/': | |
38035cf4 JH |
435 | case '.': |
436 | now = time(NULL); | |
437 | refuse_future = NULL; | |
438 | if (gmtime_r(&now, &now_tm)) | |
439 | refuse_future = &now_tm; | |
440 | ||
198b0fb6 LT |
441 | if (num > 70) { |
442 | /* yyyy-mm-dd? */ | |
38035cf4 | 443 | if (is_date(num, num2, num3, refuse_future, now, tm)) |
198b0fb6 LT |
444 | break; |
445 | /* yyyy-dd-mm? */ | |
38035cf4 | 446 | if (is_date(num, num3, num2, refuse_future, now, tm)) |
89967023 | 447 | break; |
198b0fb6 | 448 | } |
38035cf4 JH |
449 | /* Our eastern European friends say dd.mm.yy[yy] |
450 | * is the norm there, so giving precedence to | |
451 | * mm/dd/yy[yy] form only when separator is not '.' | |
452 | */ | |
453 | if (c != '.' && | |
454 | is_date(num3, num, num2, refuse_future, now, tm)) | |
455 | break; | |
456 | /* European dd.mm.yy[yy] or funny US dd/mm/yy[yy] */ | |
457 | if (is_date(num3, num2, num, refuse_future, now, tm)) | |
89967023 | 458 | break; |
38035cf4 JH |
459 | /* Funny European mm.dd.yy */ |
460 | if (c == '.' && | |
461 | is_date(num3, num, num2, refuse_future, now, tm)) | |
198b0fb6 LT |
462 | break; |
463 | return 0; | |
464 | } | |
465 | return end - date; | |
466 | } | |
467 | ||
36e4986f LT |
468 | /* |
469 | * Have we filled in any part of the time/date yet? | |
470 | * We just do a binary 'and' to see if the sign bit | |
471 | * is set in all the values. | |
472 | */ | |
9f2b6d29 LT |
473 | static inline int nodate(struct tm *tm) |
474 | { | |
36e4986f LT |
475 | return (tm->tm_year & |
476 | tm->tm_mon & | |
477 | tm->tm_mday & | |
478 | tm->tm_hour & | |
479 | tm->tm_min & | |
480 | tm->tm_sec) < 0; | |
9f2b6d29 LT |
481 | } |
482 | ||
198b0fb6 | 483 | /* |
a6080a0a | 484 | * We've seen a digit. Time? Year? Date? |
198b0fb6 | 485 | */ |
26a2d8ae | 486 | static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt) |
198b0fb6 LT |
487 | { |
488 | int n; | |
489 | char *end; | |
490 | unsigned long num; | |
491 | ||
492 | num = strtoul(date, &end, 10); | |
493 | ||
494 | /* | |
a1a5a634 JS |
495 | * Seconds since 1970? We trigger on that for any numbers with |
496 | * more than 8 digits. This is because we don't want to rule out | |
497 | * numbers like 20070606 as a YYYYMMDD date. | |
198b0fb6 | 498 | */ |
9f2b6d29 | 499 | if (num >= 100000000 && nodate(tm)) { |
198b0fb6 | 500 | time_t time = num; |
9cb480f2 JH |
501 | if (gmtime_r(&time, tm)) { |
502 | *tm_gmt = 1; | |
198b0fb6 | 503 | return end - date; |
9cb480f2 | 504 | } |
198b0fb6 LT |
505 | } |
506 | ||
507 | /* | |
38035cf4 | 508 | * Check for special formats: num[-.:/]num[same]num |
198b0fb6 LT |
509 | */ |
510 | switch (*end) { | |
511 | case ':': | |
38035cf4 | 512 | case '.': |
198b0fb6 LT |
513 | case '/': |
514 | case '-': | |
515 | if (isdigit(end[1])) { | |
516 | int match = match_multi_number(num, *end, date, end, tm); | |
517 | if (match) | |
518 | return match; | |
89967023 LT |
519 | } |
520 | } | |
198b0fb6 LT |
521 | |
522 | /* | |
523 | * None of the special formats? Try to guess what | |
524 | * the number meant. We use the number of digits | |
525 | * to make a more educated guess.. | |
526 | */ | |
527 | n = 0; | |
528 | do { | |
529 | n++; | |
530 | } while (isdigit(date[n])); | |
531 | ||
532 | /* Four-digit year or a timezone? */ | |
533 | if (n == 4) { | |
7122f82f | 534 | if (num <= 1400 && *offset == -1) { |
198b0fb6 LT |
535 | unsigned int minutes = num % 100; |
536 | unsigned int hours = num / 100; | |
537 | *offset = hours*60 + minutes; | |
538 | } else if (num > 1900 && num < 2100) | |
539 | tm->tm_year = num - 1900; | |
540 | return n; | |
541 | } | |
542 | ||
9f2b6d29 LT |
543 | /* |
544 | * Ignore lots of numerals. We took care of 4-digit years above. | |
545 | * Days or months must be one or two digits. | |
546 | */ | |
547 | if (n > 2) | |
548 | return n; | |
549 | ||
198b0fb6 LT |
550 | /* |
551 | * NOTE! We will give precedence to day-of-month over month or | |
82f9d58a | 552 | * year numbers in the 1-12 range. So 05 is always "mday 5", |
198b0fb6 LT |
553 | * unless we already have a mday.. |
554 | * | |
555 | * IOW, 01 Apr 05 parses as "April 1st, 2005". | |
556 | */ | |
557 | if (num > 0 && num < 32 && tm->tm_mday < 0) { | |
558 | tm->tm_mday = num; | |
559 | return n; | |
560 | } | |
561 | ||
562 | /* Two-digit year? */ | |
563 | if (n == 2 && tm->tm_year < 0) { | |
564 | if (num < 10 && tm->tm_mday >= 0) { | |
565 | tm->tm_year = num + 100; | |
566 | return n; | |
567 | } | |
568 | if (num >= 70) { | |
569 | tm->tm_year = num; | |
570 | return n; | |
571 | } | |
572 | } | |
573 | ||
90290552 | 574 | if (num > 0 && num < 13 && tm->tm_mon < 0) |
198b0fb6 | 575 | tm->tm_mon = num-1; |
a6080a0a | 576 | |
198b0fb6 | 577 | return n; |
89967023 | 578 | } |
ecee9d9e | 579 | |
26a2d8ae | 580 | static int match_tz(const char *date, int *offp) |
89967023 LT |
581 | { |
582 | char *end; | |
ee646eb4 HL |
583 | int hour = strtoul(date + 1, &end, 10); |
584 | int n = end - (date + 1); | |
585 | int min = 0; | |
ecee9d9e | 586 | |
ee646eb4 HL |
587 | if (n == 4) { |
588 | /* hhmm */ | |
589 | min = hour % 100; | |
590 | hour = hour / 100; | |
591 | } else if (n != 2) { | |
592 | min = 99; /* random crap */ | |
593 | } else if (*end == ':') { | |
594 | /* hh:mm? */ | |
595 | min = strtoul(end + 1, &end, 10); | |
596 | if (end - (date + 1) != 5) | |
597 | min = 99; /* random crap */ | |
598 | } /* otherwise we parsed "hh" */ | |
ecee9d9e | 599 | |
198b0fb6 | 600 | /* |
ee646eb4 HL |
601 | * Don't accept any random crap. Even though some places have |
602 | * offset larger than 12 hours (e.g. Pacific/Kiritimati is at | |
603 | * UTC+14), there is something wrong if hour part is much | |
604 | * larger than that. We might also want to check that the | |
605 | * minutes are divisible by 15 or something too. (Offset of | |
606 | * Kathmandu, Nepal is UTC+5:45) | |
198b0fb6 | 607 | */ |
ee646eb4 HL |
608 | if (min < 60 && hour < 24) { |
609 | int offset = hour * 60 + min; | |
68849b54 LT |
610 | if (*date == '-') |
611 | offset = -offset; | |
68849b54 LT |
612 | *offp = offset; |
613 | } | |
89967023 LT |
614 | return end - date; |
615 | } | |
ecee9d9e | 616 | |
c33ddc2e | 617 | static void date_string(unsigned long date, int offset, struct strbuf *buf) |
01c6ad29 LT |
618 | { |
619 | int sign = '+'; | |
620 | ||
621 | if (offset < 0) { | |
622 | offset = -offset; | |
623 | sign = '-'; | |
624 | } | |
c33ddc2e | 625 | strbuf_addf(buf, "%lu %c%02d%02d", date, sign, offset / 60, offset % 60); |
01c6ad29 LT |
626 | } |
627 | ||
116eb3ab JH |
628 | /* |
629 | * Parse a string like "0 +0000" as ancient timestamp near epoch, but | |
630 | * only when it appears not as part of any other string. | |
631 | */ | |
632 | static int match_object_header_date(const char *date, unsigned long *timestamp, int *offset) | |
633 | { | |
634 | char *end; | |
635 | unsigned long stamp; | |
636 | int ofs; | |
637 | ||
be21d167 | 638 | if (*date < '0' || '9' < *date) |
116eb3ab JH |
639 | return -1; |
640 | stamp = strtoul(date, &end, 10); | |
641 | if (*end != ' ' || stamp == ULONG_MAX || (end[1] != '+' && end[1] != '-')) | |
642 | return -1; | |
643 | date = end + 2; | |
644 | ofs = strtol(date, &end, 10); | |
645 | if ((*end != '\0' && (*end != '\n')) || end != date + 4) | |
646 | return -1; | |
647 | ofs = (ofs / 100) * 60 + (ofs % 100); | |
648 | if (date[-1] == '-') | |
649 | ofs = -ofs; | |
650 | *timestamp = stamp; | |
651 | *offset = ofs; | |
652 | return 0; | |
653 | } | |
654 | ||
89967023 LT |
655 | /* Gr. strptime is crap for this; it doesn't have a way to require RFC2822 |
656 | (i.e. English) day/month names, and it doesn't work correctly with %z. */ | |
9644c061 | 657 | int parse_date_basic(const char *date, unsigned long *timestamp, int *offset) |
89967023 LT |
658 | { |
659 | struct tm tm; | |
c5043cc1 RR |
660 | int tm_gmt; |
661 | unsigned long dummy_timestamp; | |
662 | int dummy_offset; | |
663 | ||
664 | if (!timestamp) | |
665 | timestamp = &dummy_timestamp; | |
666 | if (!offset) | |
667 | offset = &dummy_offset; | |
ecee9d9e | 668 | |
89967023 LT |
669 | memset(&tm, 0, sizeof(tm)); |
670 | tm.tm_year = -1; | |
671 | tm.tm_mon = -1; | |
672 | tm.tm_mday = -1; | |
eaa85129 | 673 | tm.tm_isdst = -1; |
36e4986f LT |
674 | tm.tm_hour = -1; |
675 | tm.tm_min = -1; | |
676 | tm.tm_sec = -1; | |
c5043cc1 | 677 | *offset = -1; |
9cb480f2 | 678 | tm_gmt = 0; |
89967023 | 679 | |
2c733fb2 JH |
680 | if (*date == '@' && |
681 | !match_object_header_date(date + 1, timestamp, offset)) | |
116eb3ab | 682 | return 0; /* success */ |
89967023 LT |
683 | for (;;) { |
684 | int match = 0; | |
685 | unsigned char c = *date; | |
686 | ||
687 | /* Stop at end of string or newline */ | |
688 | if (!c || c == '\n') | |
689 | break; | |
690 | ||
691 | if (isalpha(c)) | |
c5043cc1 | 692 | match = match_alpha(date, &tm, offset); |
89967023 | 693 | else if (isdigit(c)) |
c5043cc1 | 694 | match = match_digit(date, &tm, offset, &tm_gmt); |
89967023 | 695 | else if ((c == '-' || c == '+') && isdigit(date[1])) |
c5043cc1 | 696 | match = match_tz(date, offset); |
89967023 LT |
697 | |
698 | if (!match) { | |
699 | /* BAD CRAP */ | |
700 | match = 1; | |
a6080a0a | 701 | } |
89967023 LT |
702 | |
703 | date += match; | |
704 | } | |
ecee9d9e | 705 | |
eaa85129 | 706 | /* mktime uses local timezone */ |
c5043cc1 | 707 | *timestamp = tm_to_time_t(&tm); |
e1033da6 MG |
708 | if (*offset == -1) { |
709 | time_t temp_time = mktime(&tm); | |
710 | if ((time_t)*timestamp > temp_time) { | |
711 | *offset = ((time_t)*timestamp - temp_time) / 60; | |
712 | } else { | |
713 | *offset = -(int)((temp_time - (time_t)*timestamp) / 60); | |
714 | } | |
715 | } | |
eaa85129 | 716 | |
c5043cc1 | 717 | if (*timestamp == -1) |
2a39064c | 718 | return -1; |
ecee9d9e | 719 | |
9cb480f2 | 720 | if (!tm_gmt) |
c5043cc1 | 721 | *timestamp -= *offset * 60; |
9644c061 | 722 | return 0; /* success */ |
c5043cc1 RR |
723 | } |
724 | ||
3d27b9b0 JH |
725 | int parse_expiry_date(const char *date, unsigned long *timestamp) |
726 | { | |
727 | int errors = 0; | |
728 | ||
729 | if (!strcmp(date, "never") || !strcmp(date, "false")) | |
730 | *timestamp = 0; | |
731 | else if (!strcmp(date, "all") || !strcmp(date, "now")) | |
732 | /* | |
733 | * We take over "now" here, which usually translates | |
734 | * to the current timestamp. This is because the user | |
735 | * really means to expire everything she has done in | |
736 | * the past, and by definition reflogs are the record | |
737 | * of the past, and there is nothing from the future | |
738 | * to be kept. | |
739 | */ | |
740 | *timestamp = ULONG_MAX; | |
741 | else | |
742 | *timestamp = approxidate_careful(date, &errors); | |
743 | ||
744 | return errors; | |
745 | } | |
746 | ||
c33ddc2e | 747 | int parse_date(const char *date, struct strbuf *result) |
c5043cc1 RR |
748 | { |
749 | unsigned long timestamp; | |
750 | int offset; | |
9644c061 | 751 | if (parse_date_basic(date, ×tamp, &offset)) |
c5043cc1 | 752 | return -1; |
c33ddc2e JK |
753 | date_string(timestamp, offset, result); |
754 | return 0; | |
ecee9d9e ET |
755 | } |
756 | ||
856665f8 AP |
757 | enum date_mode parse_date_format(const char *format) |
758 | { | |
759 | if (!strcmp(format, "relative")) | |
760 | return DATE_RELATIVE; | |
761 | else if (!strcmp(format, "iso8601") || | |
762 | !strcmp(format, "iso")) | |
763 | return DATE_ISO8601; | |
466fb674 BB |
764 | else if (!strcmp(format, "iso8601-strict") || |
765 | !strcmp(format, "iso-strict")) | |
766 | return DATE_ISO8601_STRICT; | |
856665f8 AP |
767 | else if (!strcmp(format, "rfc2822") || |
768 | !strcmp(format, "rfc")) | |
769 | return DATE_RFC2822; | |
770 | else if (!strcmp(format, "short")) | |
771 | return DATE_SHORT; | |
772 | else if (!strcmp(format, "local")) | |
773 | return DATE_LOCAL; | |
774 | else if (!strcmp(format, "default")) | |
775 | return DATE_NORMAL; | |
7dff9b30 LT |
776 | else if (!strcmp(format, "raw")) |
777 | return DATE_RAW; | |
856665f8 AP |
778 | else |
779 | die("unknown date format %s", format); | |
780 | } | |
781 | ||
c33ddc2e | 782 | void datestamp(struct strbuf *out) |
ecee9d9e ET |
783 | { |
784 | time_t now; | |
785 | int offset; | |
786 | ||
787 | time(&now); | |
788 | ||
bb5799d6 | 789 | offset = tm_to_time_t(localtime(&now)) - now; |
ecee9d9e ET |
790 | offset /= 60; |
791 | ||
c33ddc2e | 792 | date_string(now, offset, out); |
ecee9d9e | 793 | } |
3c07b1d1 | 794 | |
90290552 LT |
795 | /* |
796 | * Relative time update (eg "2 days ago"). If we haven't set the time | |
797 | * yet, we need to set it from current time. | |
798 | */ | |
799 | static unsigned long update_tm(struct tm *tm, struct tm *now, unsigned long sec) | |
3c07b1d1 | 800 | { |
90290552 LT |
801 | time_t n; |
802 | ||
803 | if (tm->tm_mday < 0) | |
804 | tm->tm_mday = now->tm_mday; | |
805 | if (tm->tm_mon < 0) | |
806 | tm->tm_mon = now->tm_mon; | |
807 | if (tm->tm_year < 0) { | |
808 | tm->tm_year = now->tm_year; | |
809 | if (tm->tm_mon > now->tm_mon) | |
810 | tm->tm_year--; | |
811 | } | |
812 | ||
813 | n = mktime(tm) - sec; | |
3c07b1d1 | 814 | localtime_r(&n, tm); |
90290552 | 815 | return n; |
3c07b1d1 LT |
816 | } |
817 | ||
93cfa7c7 JH |
818 | static void date_now(struct tm *tm, struct tm *now, int *num) |
819 | { | |
820 | update_tm(tm, now, 0); | |
821 | } | |
822 | ||
90290552 | 823 | static void date_yesterday(struct tm *tm, struct tm *now, int *num) |
a8aca418 | 824 | { |
90290552 | 825 | update_tm(tm, now, 24*60*60); |
a8aca418 LT |
826 | } |
827 | ||
90290552 | 828 | static void date_time(struct tm *tm, struct tm *now, int hour) |
a8aca418 LT |
829 | { |
830 | if (tm->tm_hour < hour) | |
90290552 | 831 | date_yesterday(tm, now, NULL); |
a8aca418 LT |
832 | tm->tm_hour = hour; |
833 | tm->tm_min = 0; | |
834 | tm->tm_sec = 0; | |
835 | } | |
836 | ||
90290552 | 837 | static void date_midnight(struct tm *tm, struct tm *now, int *num) |
a8aca418 | 838 | { |
90290552 | 839 | date_time(tm, now, 0); |
a8aca418 LT |
840 | } |
841 | ||
90290552 | 842 | static void date_noon(struct tm *tm, struct tm *now, int *num) |
a8aca418 | 843 | { |
90290552 | 844 | date_time(tm, now, 12); |
a8aca418 LT |
845 | } |
846 | ||
90290552 | 847 | static void date_tea(struct tm *tm, struct tm *now, int *num) |
a8aca418 | 848 | { |
90290552 | 849 | date_time(tm, now, 17); |
a8aca418 LT |
850 | } |
851 | ||
90290552 | 852 | static void date_pm(struct tm *tm, struct tm *now, int *num) |
393d340e | 853 | { |
18b633ca | 854 | int hour, n = *num; |
393d340e LT |
855 | *num = 0; |
856 | ||
18b633ca LT |
857 | hour = tm->tm_hour; |
858 | if (n) { | |
859 | hour = n; | |
393d340e LT |
860 | tm->tm_min = 0; |
861 | tm->tm_sec = 0; | |
862 | } | |
18b633ca | 863 | tm->tm_hour = (hour % 12) + 12; |
393d340e LT |
864 | } |
865 | ||
90290552 | 866 | static void date_am(struct tm *tm, struct tm *now, int *num) |
393d340e | 867 | { |
18b633ca | 868 | int hour, n = *num; |
393d340e LT |
869 | *num = 0; |
870 | ||
18b633ca LT |
871 | hour = tm->tm_hour; |
872 | if (n) { | |
873 | hour = n; | |
393d340e LT |
874 | tm->tm_min = 0; |
875 | tm->tm_sec = 0; | |
876 | } | |
18b633ca | 877 | tm->tm_hour = (hour % 12); |
393d340e LT |
878 | } |
879 | ||
90290552 | 880 | static void date_never(struct tm *tm, struct tm *now, int *num) |
af66366a | 881 | { |
8c6b5786 OM |
882 | time_t n = 0; |
883 | localtime_r(&n, tm); | |
af66366a JS |
884 | } |
885 | ||
a8aca418 LT |
886 | static const struct special { |
887 | const char *name; | |
90290552 | 888 | void (*fn)(struct tm *, struct tm *, int *); |
a8aca418 LT |
889 | } special[] = { |
890 | { "yesterday", date_yesterday }, | |
891 | { "noon", date_noon }, | |
892 | { "midnight", date_midnight }, | |
893 | { "tea", date_tea }, | |
393d340e LT |
894 | { "PM", date_pm }, |
895 | { "AM", date_am }, | |
af66366a | 896 | { "never", date_never }, |
93cfa7c7 | 897 | { "now", date_now }, |
a8aca418 LT |
898 | { NULL } |
899 | }; | |
900 | ||
3c07b1d1 LT |
901 | static const char *number_name[] = { |
902 | "zero", "one", "two", "three", "four", | |
903 | "five", "six", "seven", "eight", "nine", "ten", | |
904 | }; | |
905 | ||
a8aca418 | 906 | static const struct typelen { |
3c07b1d1 LT |
907 | const char *type; |
908 | int length; | |
909 | } typelen[] = { | |
910 | { "seconds", 1 }, | |
911 | { "minutes", 60 }, | |
912 | { "hours", 60*60 }, | |
913 | { "days", 24*60*60 }, | |
914 | { "weeks", 7*24*60*60 }, | |
915 | { NULL } | |
a6080a0a | 916 | }; |
3c07b1d1 | 917 | |
93cfa7c7 | 918 | static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm *now, int *num, int *touched) |
3c07b1d1 | 919 | { |
a8aca418 LT |
920 | const struct typelen *tl; |
921 | const struct special *s; | |
3c07b1d1 | 922 | const char *end = date; |
5df7dbba | 923 | int i; |
3c07b1d1 | 924 | |
38db01b7 | 925 | while (isalpha(*++end)) |
5df7dbba | 926 | ; |
3c07b1d1 LT |
927 | |
928 | for (i = 0; i < 12; i++) { | |
929 | int match = match_string(date, month_names[i]); | |
930 | if (match >= 3) { | |
931 | tm->tm_mon = i; | |
93cfa7c7 | 932 | *touched = 1; |
3c07b1d1 LT |
933 | return end; |
934 | } | |
935 | } | |
936 | ||
a8aca418 LT |
937 | for (s = special; s->name; s++) { |
938 | int len = strlen(s->name); | |
939 | if (match_string(date, s->name) == len) { | |
90290552 | 940 | s->fn(tm, now, num); |
93cfa7c7 | 941 | *touched = 1; |
a8aca418 LT |
942 | return end; |
943 | } | |
3c07b1d1 LT |
944 | } |
945 | ||
946 | if (!*num) { | |
947 | for (i = 1; i < 11; i++) { | |
948 | int len = strlen(number_name[i]); | |
949 | if (match_string(date, number_name[i]) == len) { | |
950 | *num = i; | |
93cfa7c7 | 951 | *touched = 1; |
3c07b1d1 LT |
952 | return end; |
953 | } | |
954 | } | |
93cfa7c7 | 955 | if (match_string(date, "last") == 4) { |
3c07b1d1 | 956 | *num = 1; |
93cfa7c7 JH |
957 | *touched = 1; |
958 | } | |
3c07b1d1 LT |
959 | return end; |
960 | } | |
961 | ||
962 | tl = typelen; | |
963 | while (tl->type) { | |
964 | int len = strlen(tl->type); | |
965 | if (match_string(date, tl->type) >= len-1) { | |
90290552 | 966 | update_tm(tm, now, tl->length * *num); |
3c07b1d1 | 967 | *num = 0; |
93cfa7c7 | 968 | *touched = 1; |
3c07b1d1 LT |
969 | return end; |
970 | } | |
971 | tl++; | |
972 | } | |
973 | ||
6b7b0427 LT |
974 | for (i = 0; i < 7; i++) { |
975 | int match = match_string(date, weekday_names[i]); | |
976 | if (match >= 3) { | |
977 | int diff, n = *num -1; | |
978 | *num = 0; | |
979 | ||
980 | diff = tm->tm_wday - i; | |
981 | if (diff <= 0) | |
982 | n++; | |
983 | diff += 7*n; | |
984 | ||
90290552 | 985 | update_tm(tm, now, diff * 24 * 60 * 60); |
93cfa7c7 | 986 | *touched = 1; |
6b7b0427 LT |
987 | return end; |
988 | } | |
989 | } | |
990 | ||
3c07b1d1 | 991 | if (match_string(date, "months") >= 5) { |
931e8e27 JK |
992 | int n; |
993 | update_tm(tm, now, 0); /* fill in date fields if needed */ | |
994 | n = tm->tm_mon - *num; | |
3c07b1d1 LT |
995 | *num = 0; |
996 | while (n < 0) { | |
997 | n += 12; | |
998 | tm->tm_year--; | |
999 | } | |
1000 | tm->tm_mon = n; | |
93cfa7c7 | 1001 | *touched = 1; |
3c07b1d1 LT |
1002 | return end; |
1003 | } | |
1004 | ||
1005 | if (match_string(date, "years") >= 4) { | |
931e8e27 | 1006 | update_tm(tm, now, 0); /* fill in date fields if needed */ |
3c07b1d1 LT |
1007 | tm->tm_year -= *num; |
1008 | *num = 0; | |
93cfa7c7 | 1009 | *touched = 1; |
3c07b1d1 LT |
1010 | return end; |
1011 | } | |
1012 | ||
1013 | return end; | |
1014 | } | |
1015 | ||
e92a54d9 LT |
1016 | static const char *approxidate_digit(const char *date, struct tm *tm, int *num) |
1017 | { | |
1018 | char *end; | |
1019 | unsigned long number = strtoul(date, &end, 10); | |
1020 | ||
393d340e LT |
1021 | switch (*end) { |
1022 | case ':': | |
1023 | case '.': | |
1024 | case '/': | |
1025 | case '-': | |
1026 | if (isdigit(end[1])) { | |
1027 | int match = match_multi_number(number, *end, date, end, tm); | |
1028 | if (match) | |
1029 | return date + match; | |
1030 | } | |
1031 | } | |
1032 | ||
9f2b6d29 LT |
1033 | /* Accept zero-padding only for small numbers ("Dec 02", never "Dec 0002") */ |
1034 | if (date[0] != '0' || end - date <= 2) | |
1035 | *num = number; | |
e92a54d9 LT |
1036 | return end; |
1037 | } | |
1038 | ||
90290552 LT |
1039 | /* |
1040 | * Do we have a pending number at the end, or when | |
1041 | * we see a new one? Let's assume it's a month day, | |
1042 | * as in "Dec 6, 1992" | |
1043 | */ | |
1044 | static void pending_number(struct tm *tm, int *num) | |
1045 | { | |
1046 | int number = *num; | |
1047 | ||
1048 | if (number) { | |
1049 | *num = 0; | |
1050 | if (tm->tm_mday < 0 && number < 32) | |
1051 | tm->tm_mday = number; | |
36e4986f LT |
1052 | else if (tm->tm_mon < 0 && number < 13) |
1053 | tm->tm_mon = number-1; | |
1054 | else if (tm->tm_year < 0) { | |
1055 | if (number > 1969 && number < 2100) | |
1056 | tm->tm_year = number - 1900; | |
1057 | else if (number > 69 && number < 100) | |
1058 | tm->tm_year = number; | |
1059 | else if (number < 38) | |
1060 | tm->tm_year = 100 + number; | |
1061 | /* We screw up for number = 00 ? */ | |
1062 | } | |
90290552 LT |
1063 | } |
1064 | } | |
1065 | ||
93cfa7c7 JH |
1066 | static unsigned long approxidate_str(const char *date, |
1067 | const struct timeval *tv, | |
1068 | int *error_ret) | |
3c07b1d1 LT |
1069 | { |
1070 | int number = 0; | |
93cfa7c7 | 1071 | int touched = 0; |
3c07b1d1 | 1072 | struct tm tm, now; |
f697b33b | 1073 | time_t time_sec; |
3c07b1d1 | 1074 | |
33012fc4 | 1075 | time_sec = tv->tv_sec; |
f697b33b | 1076 | localtime_r(&time_sec, &tm); |
3c07b1d1 | 1077 | now = tm; |
90290552 LT |
1078 | |
1079 | tm.tm_year = -1; | |
1080 | tm.tm_mon = -1; | |
1081 | tm.tm_mday = -1; | |
1082 | ||
3c07b1d1 LT |
1083 | for (;;) { |
1084 | unsigned char c = *date; | |
1085 | if (!c) | |
1086 | break; | |
1087 | date++; | |
1088 | if (isdigit(c)) { | |
90290552 | 1089 | pending_number(&tm, &number); |
e92a54d9 | 1090 | date = approxidate_digit(date-1, &tm, &number); |
93cfa7c7 | 1091 | touched = 1; |
3c07b1d1 LT |
1092 | continue; |
1093 | } | |
1094 | if (isalpha(c)) | |
93cfa7c7 | 1095 | date = approxidate_alpha(date-1, &tm, &now, &number, &touched); |
3c07b1d1 | 1096 | } |
90290552 | 1097 | pending_number(&tm, &number); |
93cfa7c7 JH |
1098 | if (!touched) |
1099 | *error_ret = 1; | |
90290552 | 1100 | return update_tm(&tm, &now, 0); |
3c07b1d1 | 1101 | } |
33012fc4 AR |
1102 | |
1103 | unsigned long approxidate_relative(const char *date, const struct timeval *tv) | |
1104 | { | |
c5043cc1 RR |
1105 | unsigned long timestamp; |
1106 | int offset; | |
93cfa7c7 | 1107 | int errors = 0; |
33012fc4 | 1108 | |
9644c061 | 1109 | if (!parse_date_basic(date, ×tamp, &offset)) |
c5043cc1 | 1110 | return timestamp; |
93cfa7c7 | 1111 | return approxidate_str(date, tv, &errors); |
33012fc4 AR |
1112 | } |
1113 | ||
93cfa7c7 | 1114 | unsigned long approxidate_careful(const char *date, int *error_ret) |
33012fc4 AR |
1115 | { |
1116 | struct timeval tv; | |
c5043cc1 RR |
1117 | unsigned long timestamp; |
1118 | int offset; | |
93cfa7c7 JH |
1119 | int dummy = 0; |
1120 | if (!error_ret) | |
1121 | error_ret = &dummy; | |
33012fc4 | 1122 | |
9644c061 | 1123 | if (!parse_date_basic(date, ×tamp, &offset)) { |
93cfa7c7 | 1124 | *error_ret = 0; |
c5043cc1 | 1125 | return timestamp; |
93cfa7c7 | 1126 | } |
33012fc4 AR |
1127 | |
1128 | gettimeofday(&tv, NULL); | |
93cfa7c7 | 1129 | return approxidate_str(date, &tv, error_ret); |
33012fc4 | 1130 | } |
7ca36d93 JK |
1131 | |
1132 | int date_overflows(unsigned long t) | |
1133 | { | |
1134 | time_t sys; | |
1135 | ||
1136 | /* If we overflowed our unsigned long, that's bad... */ | |
1137 | if (t == ULONG_MAX) | |
1138 | return 1; | |
1139 | ||
1140 | /* | |
1141 | * ...but we also are going to feed the result to system | |
1142 | * functions that expect time_t, which is often "signed long". | |
1143 | * Make sure that we fit into time_t, as well. | |
1144 | */ | |
1145 | sys = t; | |
1146 | return t != sys || (t < 1) != (sys < 1); | |
1147 | } |