Commit | Line | Data |
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e4b265d8 | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc. |
1c299a6b | 2 | * |
0f2d19dd JB |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
1c299a6b | 7 | * |
0f2d19dd JB |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
1c299a6b | 12 | * |
0f2d19dd JB |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 | 41 | |
1bbd0b84 | 42 | |
0f2d19dd JB |
43 | \f |
44 | ||
45 | #include <stdio.h> | |
e6e2e95a MD |
46 | #include <errno.h> |
47 | ||
a0599745 MD |
48 | #include "libguile/_scm.h" |
49 | #include "libguile/feature.h" | |
50 | #include "libguile/strings.h" | |
51 | #include "libguile/vectors.h" | |
20e6290e | 52 | |
a0599745 MD |
53 | #include "libguile/validate.h" |
54 | #include "libguile/stime.h" | |
20e6290e | 55 | |
0f2d19dd JB |
56 | #ifdef HAVE_UNISTD_H |
57 | #include <unistd.h> | |
58 | #endif | |
59 | ||
60 | \f | |
61 | # ifdef HAVE_SYS_TYPES_H | |
62 | # include <sys/types.h> | |
63 | # endif | |
64 | ||
a15e6dcc MV |
65 | #ifdef HAVE_STRING_H |
66 | #include <string.h> | |
67 | #endif | |
68 | ||
0f2d19dd JB |
69 | # ifdef TIME_WITH_SYS_TIME |
70 | # include <sys/time.h> | |
71 | # include <time.h> | |
72 | # else | |
73 | # ifdef HAVE_SYS_TIME_H | |
74 | # include <sys/time.h> | |
75 | # else | |
76 | # ifdef HAVE_TIME_H | |
77 | # include <time.h> | |
78 | # endif | |
79 | # endif | |
80 | # endif | |
81 | ||
b1978258 GH |
82 | #ifdef HAVE_SYS_TIMES_H |
83 | # include <sys/times.h> | |
84 | #endif | |
85 | ||
86 | #ifdef HAVE_SYS_TIMEB_H | |
87 | # include <sys/timeb.h> | |
88 | #endif | |
0f2d19dd | 89 | |
b9525b92 GH |
90 | #ifndef tzname /* For SGI. */ |
91 | extern char *tzname[]; /* RS6000 and others reject char **tzname. */ | |
92 | #endif | |
79dcdf51 MV |
93 | #if defined (__MINGW32__) |
94 | # define tzname _tzname | |
95 | #endif | |
b9525b92 | 96 | |
4d3bacdd JB |
97 | #ifdef MISSING_STRPTIME_DECL |
98 | extern char *strptime (); | |
99 | #endif | |
100 | ||
cda55316 | 101 | /* This should be figured out by autoconf. */ |
a2fc27b5 | 102 | #if ! defined(CLKTCK) && defined(CLK_TCK) |
82893676 | 103 | # define CLKTCK ((int) CLK_TCK) |
a2fc27b5 JB |
104 | #endif |
105 | #if ! defined(CLKTCK) && defined(CLOCKS_PER_SEC) | |
82893676 | 106 | # define CLKTCK ((int) CLOCKS_PER_SEC) |
a2fc27b5 JB |
107 | #endif |
108 | #if ! defined(CLKTCK) | |
0f2d19dd | 109 | # define CLKTCK 60 |
0f2d19dd JB |
110 | #endif |
111 | ||
0f2d19dd JB |
112 | #ifdef __STDC__ |
113 | # define timet time_t | |
114 | #else | |
115 | # define timet long | |
116 | #endif | |
117 | ||
118 | #ifdef HAVE_TIMES | |
0f2d19dd | 119 | static |
1c299a6b | 120 | timet mytime() |
0f2d19dd JB |
121 | { |
122 | struct tms time_buffer; | |
123 | times(&time_buffer); | |
124 | return time_buffer.tms_utime + time_buffer.tms_stime; | |
125 | } | |
126 | #else | |
127 | # ifdef LACK_CLOCK | |
128 | # define mytime() ((time((timet*)0) - scm_your_base) * CLKTCK) | |
129 | # else | |
130 | # define mytime clock | |
131 | # endif | |
132 | #endif | |
133 | ||
0f2d19dd | 134 | #ifdef HAVE_FTIME |
0f2d19dd | 135 | struct timeb scm_your_base = {0}; |
b450f070 GB |
136 | #else |
137 | timet scm_your_base = 0; | |
138 | #endif | |
1bbd0b84 | 139 | |
1c299a6b | 140 | SCM_DEFINE (scm_get_internal_real_time, "get-internal-real-time", 0, 0, 0, |
1bbd0b84 | 141 | (), |
1e6808ea MG |
142 | "Return the number of time units since the interpreter was\n" |
143 | "started.") | |
1bbd0b84 | 144 | #define FUNC_NAME s_scm_get_internal_real_time |
0f2d19dd | 145 | { |
b450f070 | 146 | #ifdef HAVE_FTIME |
0f2d19dd | 147 | struct timeb time_buffer; |
55c4d089 JB |
148 | |
149 | SCM tmp; | |
150 | ftime (&time_buffer); | |
0f2d19dd | 151 | time_buffer.time -= scm_your_base.time; |
55c4d089 JB |
152 | tmp = scm_long2num (time_buffer.millitm - scm_your_base.millitm); |
153 | tmp = scm_sum (tmp, | |
154 | scm_product (SCM_MAKINUM (1000), | |
155 | SCM_MAKINUM (time_buffer.time))); | |
156 | return scm_quotient (scm_product (tmp, SCM_MAKINUM (CLKTCK)), | |
157 | SCM_MAKINUM (1000)); | |
0f2d19dd | 158 | #else |
19468eff | 159 | return scm_long2num((time((timet*)0) - scm_your_base) * (int)CLKTCK); |
b450f070 | 160 | #endif /* HAVE_FTIME */ |
0f2d19dd | 161 | } |
1bbd0b84 GB |
162 | #undef FUNC_NAME |
163 | ||
0f2d19dd | 164 | |
f25f761d | 165 | #ifdef HAVE_TIMES |
1c299a6b | 166 | SCM_DEFINE (scm_times, "times", 0, 0, 0, |
1bbd0b84 | 167 | (void), |
1e6808ea MG |
168 | "Return an object with information about real and processor\n" |
169 | "time. The following procedures accept such an object as an\n" | |
170 | "argument and return a selected component:\n" | |
171 | "\n" | |
b380b885 MD |
172 | "@table @code\n" |
173 | "@item tms:clock\n" | |
174 | "The current real time, expressed as time units relative to an\n" | |
175 | "arbitrary base.\n" | |
176 | "@item tms:utime\n" | |
177 | "The CPU time units used by the calling process.\n" | |
178 | "@item tms:stime\n" | |
1e6808ea MG |
179 | "The CPU time units used by the system on behalf of the calling\n" |
180 | "process.\n" | |
b380b885 | 181 | "@item tms:cutime\n" |
1e6808ea MG |
182 | "The CPU time units used by terminated child processes of the\n" |
183 | "calling process, whose status has been collected (e.g., using\n" | |
184 | "@code{waitpid}).\n" | |
b380b885 | 185 | "@item tms:cstime\n" |
1e6808ea | 186 | "Similarly, the CPU times units used by the system on behalf of\n" |
b380b885 MD |
187 | "terminated child processes.\n" |
188 | "@end table") | |
1bbd0b84 | 189 | #define FUNC_NAME s_scm_times |
6afcd3b2 | 190 | { |
6afcd3b2 GH |
191 | struct tms t; |
192 | clock_t rv; | |
193 | ||
00ffa0e7 | 194 | SCM result = scm_c_make_vector (5, SCM_UNDEFINED); |
6afcd3b2 GH |
195 | rv = times (&t); |
196 | if (rv == -1) | |
1bbd0b84 | 197 | SCM_SYSERROR; |
6afcd3b2 GH |
198 | SCM_VELTS (result)[0] = scm_long2num (rv); |
199 | SCM_VELTS (result)[1] = scm_long2num (t.tms_utime); | |
200 | SCM_VELTS (result)[2] = scm_long2num (t.tms_stime); | |
201 | SCM_VELTS (result)[3] = scm_long2num (t.tms_cutime); | |
202 | SCM_VELTS (result)[4] = scm_long2num (t.tms_cstime); | |
203 | return result; | |
6afcd3b2 | 204 | } |
1bbd0b84 | 205 | #undef FUNC_NAME |
f25f761d | 206 | #endif /* HAVE_TIMES */ |
6afcd3b2 | 207 | |
0f2d19dd JB |
208 | static long scm_my_base = 0; |
209 | ||
1c299a6b ML |
210 | long |
211 | scm_c_get_internal_run_time () | |
212 | { | |
213 | return mytime () - scm_my_base; | |
214 | } | |
215 | ||
216 | SCM_DEFINE (scm_get_internal_run_time, "get-internal-run-time", 0, 0, 0, | |
1bbd0b84 | 217 | (void), |
1e6808ea MG |
218 | "Return the number of time units of processor time used by the\n" |
219 | "interpreter. Both @emph{system} and @emph{user} time are\n" | |
220 | "included but subprocesses are not.") | |
1bbd0b84 | 221 | #define FUNC_NAME s_scm_get_internal_run_time |
0f2d19dd | 222 | { |
1c299a6b | 223 | return scm_long2num (scm_c_get_internal_run_time ()); |
0f2d19dd | 224 | } |
1bbd0b84 | 225 | #undef FUNC_NAME |
0f2d19dd | 226 | |
1c299a6b | 227 | SCM_DEFINE (scm_current_time, "current-time", 0, 0, 0, |
1bbd0b84 | 228 | (void), |
1e6808ea MG |
229 | "Return the number of seconds since 1970-01-01 00:00:00 UTC,\n" |
230 | "excluding leap seconds.") | |
1bbd0b84 | 231 | #define FUNC_NAME s_scm_current_time |
0f2d19dd | 232 | { |
19468eff GH |
233 | timet timv; |
234 | ||
235 | SCM_DEFER_INTS; | |
236 | if ((timv = time (0)) == -1) | |
1bbd0b84 | 237 | SCM_SYSERROR; |
19468eff GH |
238 | SCM_ALLOW_INTS; |
239 | return scm_long2num((long) timv); | |
240 | } | |
1bbd0b84 | 241 | #undef FUNC_NAME |
19468eff | 242 | |
1c299a6b | 243 | SCM_DEFINE (scm_gettimeofday, "gettimeofday", 0, 0, 0, |
1bbd0b84 | 244 | (void), |
1e6808ea MG |
245 | "Return a pair containing the number of seconds and microseconds\n" |
246 | "since 1970-01-01 00:00:00 UTC, excluding leap seconds. Note:\n" | |
247 | "whether true microsecond resolution is available depends on the\n" | |
248 | "operating system.") | |
1bbd0b84 | 249 | #define FUNC_NAME s_scm_gettimeofday |
19468eff GH |
250 | { |
251 | #ifdef HAVE_GETTIMEOFDAY | |
252 | struct timeval time; | |
253 | ||
254 | SCM_DEFER_INTS; | |
255 | if (gettimeofday (&time, NULL) == -1) | |
1bbd0b84 | 256 | SCM_SYSERROR; |
19468eff GH |
257 | SCM_ALLOW_INTS; |
258 | return scm_cons (scm_long2num ((long) time.tv_sec), | |
259 | scm_long2num ((long) time.tv_usec)); | |
260 | #else | |
261 | # ifdef HAVE_FTIME | |
262 | struct timeb time; | |
263 | ||
264 | ftime(&time); | |
1c299a6b | 265 | return scm_cons (scm_long2num ((long) time.time), |
9a81afca | 266 | SCM_MAKINUM (time.millitm * 1000)); |
19468eff GH |
267 | # else |
268 | timet timv; | |
1c299a6b | 269 | |
19468eff GH |
270 | SCM_DEFER_INTS; |
271 | if ((timv = time (0)) == -1) | |
1bbd0b84 | 272 | SCM_SYSERROR; |
19468eff GH |
273 | SCM_ALLOW_INTS; |
274 | return scm_cons (scm_long2num (timv), SCM_MAKINUM (0)); | |
275 | # endif | |
276 | #endif | |
277 | } | |
1bbd0b84 | 278 | #undef FUNC_NAME |
19468eff GH |
279 | |
280 | static SCM | |
281 | filltime (struct tm *bd_time, int zoff, char *zname) | |
282 | { | |
00ffa0e7 | 283 | SCM result = scm_c_make_vector (11, SCM_UNDEFINED); |
19468eff GH |
284 | |
285 | SCM_VELTS (result)[0] = SCM_MAKINUM (bd_time->tm_sec); | |
286 | SCM_VELTS (result)[1] = SCM_MAKINUM (bd_time->tm_min); | |
287 | SCM_VELTS (result)[2] = SCM_MAKINUM (bd_time->tm_hour); | |
288 | SCM_VELTS (result)[3] = SCM_MAKINUM (bd_time->tm_mday); | |
289 | SCM_VELTS (result)[4] = SCM_MAKINUM (bd_time->tm_mon); | |
290 | SCM_VELTS (result)[5] = SCM_MAKINUM (bd_time->tm_year); | |
291 | SCM_VELTS (result)[6] = SCM_MAKINUM (bd_time->tm_wday); | |
292 | SCM_VELTS (result)[7] = SCM_MAKINUM (bd_time->tm_yday); | |
293 | SCM_VELTS (result)[8] = SCM_MAKINUM (bd_time->tm_isdst); | |
294 | SCM_VELTS (result)[9] = SCM_MAKINUM (zoff); | |
b9525b92 | 295 | SCM_VELTS (result)[10] = zname ? scm_makfrom0str (zname) : SCM_BOOL_F; |
19468eff GH |
296 | return result; |
297 | } | |
298 | ||
ef9ff3fd GH |
299 | static char tzvar[3] = "TZ"; |
300 | extern char ** environ; | |
301 | ||
38c1d3c4 GH |
302 | /* if zone is set, create a temporary environment with only a TZ |
303 | string. other threads or interrupt handlers shouldn't be allowed | |
304 | to run until the corresponding restorezone is called. hence the use | |
305 | of a static variable for tmpenv is no big deal. */ | |
ef9ff3fd | 306 | static char ** |
3eeba8d4 | 307 | setzone (SCM zone, int pos, const char *subr) |
b9525b92 | 308 | { |
ef9ff3fd | 309 | char **oldenv = 0; |
b9525b92 GH |
310 | |
311 | if (!SCM_UNBNDP (zone)) | |
312 | { | |
ef9ff3fd | 313 | static char *tmpenv[2]; |
b9525b92 GH |
314 | char *buf; |
315 | ||
9fd38a3d | 316 | SCM_ASSERT (SCM_STRINGP (zone), zone, pos, subr); |
4c9419ac | 317 | buf = scm_malloc (SCM_STRING_LENGTH (zone) + sizeof (tzvar) + 1); |
a6d9e5ab | 318 | sprintf (buf, "%s=%s", tzvar, SCM_STRING_CHARS (zone)); |
ef9ff3fd GH |
319 | oldenv = environ; |
320 | tmpenv[0] = buf; | |
321 | tmpenv[1] = 0; | |
322 | environ = tmpenv; | |
b9525b92 | 323 | } |
ef9ff3fd | 324 | return oldenv; |
b9525b92 GH |
325 | } |
326 | ||
327 | static void | |
e81d98ec | 328 | restorezone (SCM zone, char **oldenv, const char *subr SCM_UNUSED) |
b9525b92 GH |
329 | { |
330 | if (!SCM_UNBNDP (zone)) | |
331 | { | |
4c9419ac | 332 | free (environ[0]); |
ef9ff3fd | 333 | environ = oldenv; |
38c1d3c4 GH |
334 | #ifdef HAVE_TZSET |
335 | /* for the possible benefit of user code linked with libguile. */ | |
b9525b92 | 336 | tzset(); |
38c1d3c4 | 337 | #endif |
b9525b92 GH |
338 | } |
339 | } | |
340 | ||
1c299a6b | 341 | SCM_DEFINE (scm_localtime, "localtime", 1, 1, 0, |
1bbd0b84 | 342 | (SCM time, SCM zone), |
1e6808ea MG |
343 | "Return an object representing the broken down components of\n" |
344 | "@var{time}, an integer like the one returned by\n" | |
345 | "@code{current-time}. The time zone for the calculation is\n" | |
346 | "optionally specified by @var{zone} (a string), otherwise the\n" | |
347 | "@code{TZ} environment variable or the system default is used.") | |
1bbd0b84 | 348 | #define FUNC_NAME s_scm_localtime |
19468eff GH |
349 | { |
350 | timet itime; | |
4edc089c | 351 | struct tm *ltptr, lt, *utc; |
19468eff GH |
352 | SCM result; |
353 | int zoff; | |
354 | char *zname = 0; | |
ef9ff3fd | 355 | char **oldenv; |
19468eff GH |
356 | int err; |
357 | ||
e4b265d8 | 358 | itime = SCM_NUM2LONG (1, time); |
38c1d3c4 GH |
359 | |
360 | /* deferring interupts is essential since a) setzone may install a temporary | |
361 | environment b) localtime uses a static buffer. */ | |
19468eff | 362 | SCM_DEFER_INTS; |
1bbd0b84 | 363 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
38c1d3c4 GH |
364 | #ifdef LOCALTIME_CACHE |
365 | tzset (); | |
366 | #endif | |
4edc089c | 367 | ltptr = localtime (&itime); |
19468eff | 368 | err = errno; |
4edc089c | 369 | if (ltptr) |
19468eff | 370 | { |
4d3bacdd | 371 | const char *ptr; |
ef9ff3fd | 372 | |
43ff3170 GH |
373 | /* copy zone name before calling gmtime or restoring zone. */ |
374 | #if defined (HAVE_TM_ZONE) | |
ef9ff3fd | 375 | ptr = ltptr->tm_zone; |
43ff3170 | 376 | #elif defined (HAVE_TZNAME) |
ef9ff3fd | 377 | ptr = tzname[ (ltptr->tm_isdst == 1) ? 1 : 0 ]; |
43ff3170 GH |
378 | #else |
379 | ptr = ""; | |
b9525b92 | 380 | #endif |
4c9419ac | 381 | zname = scm_malloc (strlen (ptr) + 1); |
ef9ff3fd | 382 | strcpy (zname, ptr); |
19468eff | 383 | } |
ef9ff3fd GH |
384 | /* the struct is copied in case localtime and gmtime share a buffer. */ |
385 | if (ltptr) | |
386 | lt = *ltptr; | |
387 | utc = gmtime (&itime); | |
388 | if (utc == NULL) | |
389 | err = errno; | |
1bbd0b84 | 390 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 | 391 | /* delayed until zone has been restored. */ |
19468eff | 392 | errno = err; |
4edc089c | 393 | if (utc == NULL || ltptr == NULL) |
1bbd0b84 | 394 | SCM_SYSERROR; |
19468eff GH |
395 | |
396 | /* calculate timezone offset in seconds west of UTC. */ | |
4edc089c GH |
397 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
398 | + utc->tm_sec - lt.tm_sec; | |
399 | if (utc->tm_year < lt.tm_year) | |
19468eff | 400 | zoff -= 24 * 60 * 60; |
4edc089c | 401 | else if (utc->tm_year > lt.tm_year) |
19468eff | 402 | zoff += 24 * 60 * 60; |
4edc089c | 403 | else if (utc->tm_yday < lt.tm_yday) |
19468eff | 404 | zoff -= 24 * 60 * 60; |
4edc089c | 405 | else if (utc->tm_yday > lt.tm_yday) |
19468eff | 406 | zoff += 24 * 60 * 60; |
1c299a6b | 407 | |
4edc089c | 408 | result = filltime (<, zoff, zname); |
19468eff | 409 | SCM_ALLOW_INTS; |
4c9419ac MV |
410 | if (zname) |
411 | free (zname); | |
19468eff GH |
412 | return result; |
413 | } | |
1bbd0b84 | 414 | #undef FUNC_NAME |
19468eff | 415 | |
1c299a6b | 416 | SCM_DEFINE (scm_gmtime, "gmtime", 1, 0, 0, |
1bbd0b84 | 417 | (SCM time), |
1e6808ea MG |
418 | "Return an object representing the broken down components of\n" |
419 | "@var{time}, an integer like the one returned by\n" | |
420 | "@code{current-time}. The values are calculated for UTC.") | |
1bbd0b84 | 421 | #define FUNC_NAME s_scm_gmtime |
19468eff GH |
422 | { |
423 | timet itime; | |
424 | struct tm *bd_time; | |
425 | SCM result; | |
426 | ||
e4b265d8 | 427 | itime = SCM_NUM2LONG (1, time); |
19468eff GH |
428 | SCM_DEFER_INTS; |
429 | bd_time = gmtime (&itime); | |
430 | if (bd_time == NULL) | |
1bbd0b84 | 431 | SCM_SYSERROR; |
19468eff GH |
432 | result = filltime (bd_time, 0, "GMT"); |
433 | SCM_ALLOW_INTS; | |
434 | return result; | |
435 | } | |
1bbd0b84 | 436 | #undef FUNC_NAME |
19468eff | 437 | |
b9525b92 GH |
438 | /* copy time components from a Scheme object to a struct tm. */ |
439 | static void | |
3eeba8d4 | 440 | bdtime2c (SCM sbd_time, struct tm *lt, int pos, const char *subr) |
19468eff | 441 | { |
55a7fc62 GH |
442 | SCM *velts; |
443 | int i; | |
444 | ||
0c95b57d | 445 | SCM_ASSERT (SCM_VECTORP (sbd_time) |
9fd38a3d | 446 | && SCM_VECTOR_LENGTH (sbd_time) == 11, |
b9525b92 | 447 | sbd_time, pos, subr); |
55a7fc62 GH |
448 | velts = SCM_VELTS (sbd_time); |
449 | for (i = 0; i < 10; i++) | |
450 | { | |
451 | SCM_ASSERT (SCM_INUMP (velts[i]), sbd_time, pos, subr); | |
452 | } | |
0c95b57d | 453 | SCM_ASSERT (SCM_FALSEP (velts[10]) || SCM_STRINGP (velts[10]), |
55a7fc62 GH |
454 | sbd_time, pos, subr); |
455 | ||
456 | lt->tm_sec = SCM_INUM (velts[0]); | |
457 | lt->tm_min = SCM_INUM (velts[1]); | |
458 | lt->tm_hour = SCM_INUM (velts[2]); | |
459 | lt->tm_mday = SCM_INUM (velts[3]); | |
460 | lt->tm_mon = SCM_INUM (velts[4]); | |
461 | lt->tm_year = SCM_INUM (velts[5]); | |
462 | lt->tm_wday = SCM_INUM (velts[6]); | |
463 | lt->tm_yday = SCM_INUM (velts[7]); | |
464 | lt->tm_isdst = SCM_INUM (velts[8]); | |
c7abe4f3 | 465 | #ifdef HAVE_TM_ZONE |
55a7fc62 GH |
466 | lt->tm_gmtoff = SCM_INUM (velts[9]); |
467 | if (SCM_FALSEP (velts[10])) | |
468 | lt->tm_zone = NULL; | |
469 | else | |
a002f1a2 | 470 | lt->tm_zone = SCM_STRING_CHARS (velts[10]); |
c7abe4f3 | 471 | #endif |
b9525b92 GH |
472 | } |
473 | ||
1c299a6b | 474 | SCM_DEFINE (scm_mktime, "mktime", 1, 1, 0, |
1bbd0b84 | 475 | (SCM sbd_time, SCM zone), |
a3c8b9fc MD |
476 | "@var{bd-time} is an object representing broken down time and @code{zone}\n" |
477 | "is an optional time zone specifier (otherwise the TZ environment variable\n" | |
478 | "or the system default is used).\n\n" | |
a8eac221 | 479 | "Returns a pair: the car is a corresponding\n" |
a3c8b9fc | 480 | "integer time value like that returned\n" |
a8eac221 | 481 | "by @code{current-time}; the cdr is a broken down time object, similar to\n" |
a3c8b9fc | 482 | "as @var{bd-time} but with normalized values.") |
1bbd0b84 | 483 | #define FUNC_NAME s_scm_mktime |
b9525b92 GH |
484 | { |
485 | timet itime; | |
486 | struct tm lt, *utc; | |
487 | SCM result; | |
488 | int zoff; | |
489 | char *zname = 0; | |
ef9ff3fd | 490 | char **oldenv; |
b9525b92 GH |
491 | int err; |
492 | ||
1bbd0b84 | 493 | bdtime2c (sbd_time, <, SCM_ARG1, FUNC_NAME); |
19468eff GH |
494 | |
495 | SCM_DEFER_INTS; | |
1bbd0b84 | 496 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
38c1d3c4 GH |
497 | #ifdef LOCALTIME_CACHE |
498 | tzset (); | |
499 | #endif | |
19468eff | 500 | itime = mktime (<); |
b9525b92 | 501 | err = errno; |
19468eff | 502 | |
b9525b92 GH |
503 | if (itime != -1) |
504 | { | |
4d3bacdd | 505 | const char *ptr; |
ef9ff3fd | 506 | |
43ff3170 GH |
507 | /* copy zone name before calling gmtime or restoring the zone. */ |
508 | #if defined (HAVE_TM_ZONE) | |
ef9ff3fd | 509 | ptr = lt.tm_zone; |
43ff3170 | 510 | #elif defined (HAVE_TZNAME) |
ef9ff3fd | 511 | ptr = tzname[ (lt.tm_isdst == 1) ? 1 : 0 ]; |
43ff3170 GH |
512 | #else |
513 | ptr = ""; | |
b9525b92 | 514 | #endif |
4c9419ac | 515 | zname = scm_malloc (strlen (ptr) + 1); |
ef9ff3fd | 516 | strcpy (zname, ptr); |
b9525b92 | 517 | } |
ef9ff3fd GH |
518 | |
519 | /* get timezone offset in seconds west of UTC. */ | |
520 | utc = gmtime (&itime); | |
521 | if (utc == NULL) | |
522 | err = errno; | |
523 | ||
1bbd0b84 | 524 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 GH |
525 | /* delayed until zone has been restored. */ |
526 | errno = err; | |
527 | if (utc == NULL || itime == -1) | |
1bbd0b84 | 528 | SCM_SYSERROR; |
b9525b92 | 529 | |
19468eff GH |
530 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
531 | + utc->tm_sec - lt.tm_sec; | |
532 | if (utc->tm_year < lt.tm_year) | |
533 | zoff -= 24 * 60 * 60; | |
534 | else if (utc->tm_year > lt.tm_year) | |
535 | zoff += 24 * 60 * 60; | |
536 | else if (utc->tm_yday < lt.tm_yday) | |
537 | zoff -= 24 * 60 * 60; | |
538 | else if (utc->tm_yday > lt.tm_yday) | |
539 | zoff += 24 * 60 * 60; | |
540 | ||
19468eff GH |
541 | result = scm_cons (scm_long2num ((long) itime), |
542 | filltime (<, zoff, zname)); | |
543 | SCM_ALLOW_INTS; | |
4c9419ac MV |
544 | if (zname) |
545 | free (zname); | |
19468eff | 546 | return result; |
0f2d19dd | 547 | } |
1bbd0b84 | 548 | #undef FUNC_NAME |
0f2d19dd | 549 | |
38c1d3c4 | 550 | #ifdef HAVE_TZSET |
1c299a6b | 551 | SCM_DEFINE (scm_tzset, "tzset", 0, 0, 0, |
1bbd0b84 | 552 | (void), |
a3c8b9fc MD |
553 | "Initialize the timezone from the TZ environment variable\n" |
554 | "or the system default. It's not usually necessary to call this procedure\n" | |
555 | "since it's done automatically by other procedures that depend on the\n" | |
556 | "timezone.") | |
1bbd0b84 | 557 | #define FUNC_NAME s_scm_tzset |
0f2d19dd | 558 | { |
19468eff GH |
559 | tzset(); |
560 | return SCM_UNSPECIFIED; | |
0f2d19dd | 561 | } |
1bbd0b84 | 562 | #undef FUNC_NAME |
38c1d3c4 | 563 | #endif /* HAVE_TZSET */ |
0f2d19dd | 564 | |
a1ec6916 | 565 | SCM_DEFINE (scm_strftime, "strftime", 2, 0, 0, |
1bbd0b84 | 566 | (SCM format, SCM stime), |
a3c8b9fc MD |
567 | "Formats a time specification @var{time} using @var{template}. @var{time}\n" |
568 | "is an object with time components in the form returned by @code{localtime}\n" | |
569 | "or @code{gmtime}. @var{template} is a string which can include formatting\n" | |
570 | "specifications introduced by a @code{%} character. The formatting of\n" | |
571 | "month and day names is dependent on the current locale. The value returned\n" | |
572 | "is the formatted string.\n" | |
573 | "@xref{Formatting Date and Time, , , libc, The GNU C Library Reference Manual}.)") | |
1bbd0b84 | 574 | #define FUNC_NAME s_scm_strftime |
b9525b92 GH |
575 | { |
576 | struct tm t; | |
577 | ||
578 | char *tbuf; | |
579 | int size = 50; | |
a15e6dcc | 580 | char *fmt, *myfmt; |
b9525b92 | 581 | int len; |
ef9ff3fd | 582 | SCM result; |
b9525b92 | 583 | |
a6d9e5ab | 584 | SCM_VALIDATE_STRING (1, format); |
1bbd0b84 | 585 | bdtime2c (stime, &t, SCM_ARG2, FUNC_NAME); |
b9525b92 | 586 | |
a6d9e5ab DH |
587 | fmt = SCM_STRING_CHARS (format); |
588 | len = SCM_STRING_LENGTH (format); | |
b9525b92 | 589 | |
a15e6dcc MV |
590 | /* Ugly hack: strftime can return 0 if its buffer is too small, |
591 | but some valid time strings (e.g. "%p") can sometimes produce | |
592 | a zero-byte output string! Workaround is to prepend a junk | |
593 | character to the format string, so that valid returns are always | |
594 | nonzero. */ | |
4c9419ac | 595 | myfmt = scm_malloc (len+2); |
a15e6dcc MV |
596 | *myfmt = 'x'; |
597 | strncpy(myfmt+1, fmt, len); | |
598 | myfmt[len+1] = 0; | |
599 | ||
4c9419ac | 600 | tbuf = scm_malloc (size); |
b8a1b29b GH |
601 | { |
602 | #if !defined (HAVE_TM_ZONE) | |
603 | /* it seems the only way to tell non-GNU versions of strftime what | |
604 | zone to use (for the %Z format) is to set TZ in the | |
605 | environment. interrupts and thread switching must be deferred | |
606 | until TZ is restored. */ | |
607 | char **oldenv = NULL; | |
608 | SCM *velts = SCM_VELTS (stime); | |
e652b54f | 609 | int have_zone = 0; |
b8a1b29b | 610 | |
36284627 | 611 | if (!SCM_FALSEP (velts[10]) && *SCM_STRING_CHARS (velts[10]) != 0) |
b8a1b29b GH |
612 | { |
613 | /* it's not required that the TZ setting be correct, just that | |
e652b54f GH |
614 | it has the right name. so try something like TZ=EST0. |
615 | using only TZ=EST would be simpler but it doesn't work on | |
616 | some OSs, e.g., Solaris. */ | |
617 | SCM zone = | |
618 | scm_string_append (scm_cons (velts[10], | |
619 | scm_cons (scm_makfrom0str ("0"), | |
620 | SCM_EOL))); | |
1c299a6b | 621 | |
e652b54f | 622 | have_zone = 1; |
b8a1b29b | 623 | SCM_DEFER_INTS; |
e652b54f | 624 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
b8a1b29b GH |
625 | } |
626 | #endif | |
627 | ||
38c1d3c4 | 628 | #ifdef LOCALTIME_CACHE |
b8a1b29b GH |
629 | tzset (); |
630 | #endif | |
631 | ||
a15e6dcc MV |
632 | /* POSIX says strftime returns 0 on buffer overrun, but old |
633 | systems (i.e. libc 4 on GNU/Linux) might return `size' in that | |
634 | case. */ | |
635 | while ((len = strftime (tbuf, size, myfmt, &t)) == 0 || len == size) | |
b8a1b29b | 636 | { |
4c9419ac | 637 | free (tbuf); |
b8a1b29b | 638 | size *= 2; |
4c9419ac | 639 | tbuf = scm_malloc (size); |
b8a1b29b GH |
640 | } |
641 | ||
642 | #if !defined (HAVE_TM_ZONE) | |
e652b54f | 643 | if (have_zone) |
b8a1b29b GH |
644 | { |
645 | restorezone (velts[10], oldenv, FUNC_NAME); | |
646 | SCM_ALLOW_INTS; | |
647 | } | |
38c1d3c4 | 648 | #endif |
b9525b92 | 649 | } |
b8a1b29b | 650 | |
36284627 | 651 | result = scm_mem2string (tbuf + 1, len - 1); |
4c9419ac MV |
652 | free (tbuf); |
653 | free (myfmt); | |
ef9ff3fd | 654 | return result; |
b9525b92 | 655 | } |
1bbd0b84 | 656 | #undef FUNC_NAME |
b9525b92 | 657 | |
f25f761d | 658 | #ifdef HAVE_STRPTIME |
a1ec6916 | 659 | SCM_DEFINE (scm_strptime, "strptime", 2, 0, 0, |
1bbd0b84 | 660 | (SCM format, SCM string), |
a8eac221 MG |
661 | "Performs the reverse action to @code{strftime}, parsing\n" |
662 | "@var{string} according to the specification supplied in\n" | |
663 | "@var{template}. The interpretation of month and day names is\n" | |
664 | "dependent on the current locale. The value returned is a pair.\n" | |
665 | "The car has an object with time components\n" | |
a3c8b9fc MD |
666 | "in the form returned by @code{localtime} or @code{gmtime},\n" |
667 | "but the time zone components\n" | |
668 | "are not usefully set.\n" | |
a8eac221 MG |
669 | "The cdr reports the number of characters from @var{string}\n" |
670 | "which were used for the conversion.") | |
1bbd0b84 | 671 | #define FUNC_NAME s_scm_strptime |
b9525b92 | 672 | { |
b9525b92 GH |
673 | struct tm t; |
674 | char *fmt, *str, *rest; | |
675 | ||
a6d9e5ab DH |
676 | SCM_VALIDATE_STRING (1, format); |
677 | SCM_VALIDATE_STRING (2, string); | |
b9525b92 | 678 | |
a6d9e5ab DH |
679 | fmt = SCM_STRING_CHARS (format); |
680 | str = SCM_STRING_CHARS (string); | |
b9525b92 GH |
681 | |
682 | /* initialize the struct tm */ | |
683 | #define tm_init(field) t.field = 0 | |
684 | tm_init (tm_sec); | |
685 | tm_init (tm_min); | |
686 | tm_init (tm_hour); | |
687 | tm_init (tm_mday); | |
688 | tm_init (tm_mon); | |
689 | tm_init (tm_year); | |
690 | tm_init (tm_wday); | |
691 | tm_init (tm_yday); | |
692 | #undef tm_init | |
693 | ||
694 | t.tm_isdst = -1; | |
695 | SCM_DEFER_INTS; | |
696 | if ((rest = strptime (str, fmt, &t)) == NULL) | |
1bbd0b84 | 697 | SCM_SYSERROR; |
b9525b92 GH |
698 | |
699 | SCM_ALLOW_INTS; | |
700 | return scm_cons (filltime (&t, 0, NULL), SCM_MAKINUM (rest - str)); | |
b9525b92 | 701 | } |
1bbd0b84 | 702 | #undef FUNC_NAME |
f25f761d | 703 | #endif /* HAVE_STRPTIME */ |
b9525b92 | 704 | |
0f2d19dd JB |
705 | void |
706 | scm_init_stime() | |
0f2d19dd | 707 | { |
86d31dfe | 708 | scm_c_define ("internal-time-units-per-second", |
19468eff | 709 | scm_long2num((long)CLKTCK)); |
0f2d19dd JB |
710 | |
711 | #ifdef HAVE_FTIME | |
712 | if (!scm_your_base.time) ftime(&scm_your_base); | |
713 | #else | |
714 | if (!scm_your_base) time(&scm_your_base); | |
715 | #endif | |
716 | ||
717 | if (!scm_my_base) scm_my_base = mytime(); | |
718 | ||
876c87ce | 719 | scm_add_feature ("current-time"); |
8dc9439f | 720 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 721 | #include "libguile/stime.x" |
8dc9439f | 722 | #endif |
0f2d19dd JB |
723 | } |
724 | ||
89e00824 ML |
725 | |
726 | /* | |
727 | Local Variables: | |
728 | c-file-style: "gnu" | |
729 | End: | |
730 | */ |