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c7abe4f3 | 1 | /* Copyright (C) 1995,1996,1997,1998, 1999 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
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. | |
7 | * | |
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. | |
12 | * | |
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 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
876c87ce | 49 | #include "feature.h" |
20e6290e | 50 | |
1bbd0b84 | 51 | #include "scm_validate.h" |
20e6290e JB |
52 | #include "stime.h" |
53 | ||
0f2d19dd JB |
54 | #ifdef HAVE_UNISTD_H |
55 | #include <unistd.h> | |
56 | #endif | |
57 | ||
58 | \f | |
59 | # ifdef HAVE_SYS_TYPES_H | |
60 | # include <sys/types.h> | |
61 | # endif | |
62 | ||
63 | # ifdef TIME_WITH_SYS_TIME | |
64 | # include <sys/time.h> | |
65 | # include <time.h> | |
66 | # else | |
67 | # ifdef HAVE_SYS_TIME_H | |
68 | # include <sys/time.h> | |
69 | # else | |
70 | # ifdef HAVE_TIME_H | |
71 | # include <time.h> | |
72 | # endif | |
73 | # endif | |
74 | # endif | |
75 | ||
b1978258 GH |
76 | #ifdef HAVE_SYS_TIMES_H |
77 | # include <sys/times.h> | |
78 | #endif | |
79 | ||
80 | #ifdef HAVE_SYS_TIMEB_H | |
81 | # include <sys/timeb.h> | |
82 | #endif | |
0f2d19dd | 83 | |
b9525b92 GH |
84 | #ifndef tzname /* For SGI. */ |
85 | extern char *tzname[]; /* RS6000 and others reject char **tzname. */ | |
86 | #endif | |
87 | ||
4d3bacdd JB |
88 | #ifdef MISSING_STRPTIME_DECL |
89 | extern char *strptime (); | |
90 | #endif | |
91 | ||
cda55316 | 92 | /* This should be figured out by autoconf. */ |
a2fc27b5 JB |
93 | #if ! defined(CLKTCK) && defined(CLK_TCK) |
94 | # define CLKTCK CLK_TCK | |
95 | #endif | |
96 | #if ! defined(CLKTCK) && defined(CLOCKS_PER_SEC) | |
0f2d19dd | 97 | # define CLKTCK CLOCKS_PER_SEC |
a2fc27b5 JB |
98 | #endif |
99 | #if ! defined(CLKTCK) | |
0f2d19dd | 100 | # define CLKTCK 60 |
0f2d19dd JB |
101 | #endif |
102 | ||
a2fc27b5 | 103 | |
0f2d19dd JB |
104 | #ifdef __STDC__ |
105 | # define timet time_t | |
106 | #else | |
107 | # define timet long | |
108 | #endif | |
109 | ||
110 | #ifdef HAVE_TIMES | |
0f2d19dd JB |
111 | static |
112 | long mytime() | |
0f2d19dd JB |
113 | { |
114 | struct tms time_buffer; | |
115 | times(&time_buffer); | |
116 | return time_buffer.tms_utime + time_buffer.tms_stime; | |
117 | } | |
118 | #else | |
119 | # ifdef LACK_CLOCK | |
120 | # define mytime() ((time((timet*)0) - scm_your_base) * CLKTCK) | |
121 | # else | |
122 | # define mytime clock | |
123 | # endif | |
124 | #endif | |
125 | ||
19468eff | 126 | extern int errno; |
0f2d19dd JB |
127 | |
128 | #ifdef HAVE_FTIME | |
129 | ||
130 | struct timeb scm_your_base = {0}; | |
1bbd0b84 GB |
131 | |
132 | GUILE_PROC(scm_get_internal_real_time, "get-internal-real-time", 0, 0, 0, | |
133 | (), | |
4079f87e | 134 | "Returns the number of time units since the interpreter was started.") |
1bbd0b84 | 135 | #define FUNC_NAME s_scm_get_internal_real_time |
0f2d19dd JB |
136 | { |
137 | struct timeb time_buffer; | |
55c4d089 JB |
138 | |
139 | SCM tmp; | |
140 | ftime (&time_buffer); | |
0f2d19dd | 141 | time_buffer.time -= scm_your_base.time; |
55c4d089 JB |
142 | tmp = scm_long2num (time_buffer.millitm - scm_your_base.millitm); |
143 | tmp = scm_sum (tmp, | |
144 | scm_product (SCM_MAKINUM (1000), | |
145 | SCM_MAKINUM (time_buffer.time))); | |
146 | return scm_quotient (scm_product (tmp, SCM_MAKINUM (CLKTCK)), | |
147 | SCM_MAKINUM (1000)); | |
1bbd0b84 GB |
148 | } |
149 | #undef FUNC_NAME | |
150 | ||
0f2d19dd JB |
151 | |
152 | #else | |
153 | ||
154 | timet scm_your_base = 0; | |
1bbd0b84 GB |
155 | |
156 | GUILE_PROC(scm_get_internal_real_time, "get-internal-real-time", 0, 0, 0, | |
157 | (), | |
717050c8 | 158 | "") |
1bbd0b84 | 159 | #define FUNC_NAME s_scm_get_internal_real_time |
0f2d19dd | 160 | { |
19468eff | 161 | return scm_long2num((time((timet*)0) - scm_your_base) * (int)CLKTCK); |
0f2d19dd | 162 | } |
1bbd0b84 GB |
163 | #undef FUNC_NAME |
164 | ||
0f2d19dd JB |
165 | #endif |
166 | ||
1bbd0b84 GB |
167 | GUILE_PROC (scm_times, "times", 0, 0, 0, |
168 | (void), | |
4079f87e GB |
169 | "Returns an object with information about real and processor time. |
170 | The following procedures accept such an object as an argument and | |
171 | return a selected component: | |
172 | ||
173 | @table @code | |
174 | @item tms:clock | |
175 | The current real time, expressed as time units relative to an | |
176 | arbitrary base. | |
177 | @item tms:utime | |
178 | The CPU time units used by the calling process. | |
179 | @item tms:stime | |
180 | The CPU time units used by the system on behalf of the calling process. | |
181 | @item tms:cutime | |
182 | The CPU time units used by terminated child processes of the calling | |
183 | process, whose status has been collected (e.g., using @code{waitpid}). | |
184 | @item tms:cstime | |
185 | Similarly, the CPU times units used by the system on behalf of | |
186 | terminated child processes. | |
187 | @end table") | |
1bbd0b84 | 188 | #define FUNC_NAME s_scm_times |
6afcd3b2 GH |
189 | { |
190 | #ifdef HAVE_TIMES | |
191 | struct tms t; | |
192 | clock_t rv; | |
193 | ||
a8741caa | 194 | SCM result = scm_make_vector (SCM_MAKINUM(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; | |
204 | #else | |
1bbd0b84 | 205 | SCM_SYSMISSING; |
6afcd3b2 GH |
206 | #endif |
207 | } | |
1bbd0b84 | 208 | #undef FUNC_NAME |
6afcd3b2 | 209 | |
0e958795 JB |
210 | #ifndef HAVE_TZSET |
211 | /* GNU-WIN32's cygwin.dll doesn't have this. */ | |
212 | #define tzset() | |
213 | #endif | |
0f2d19dd JB |
214 | |
215 | ||
216 | static long scm_my_base = 0; | |
217 | ||
1bbd0b84 GB |
218 | GUILE_PROC(scm_get_internal_run_time, "get-internal-run-time", 0, 0, 0, |
219 | (void), | |
4079f87e GB |
220 | "Returns the number of time units of processor time used by the interpreter. |
221 | Both "system" and "user" time | |
222 | are included but subprocesses are not.") | |
1bbd0b84 | 223 | #define FUNC_NAME s_scm_get_internal_run_time |
0f2d19dd | 224 | { |
19468eff | 225 | return scm_long2num(mytime()-scm_my_base); |
0f2d19dd | 226 | } |
1bbd0b84 | 227 | #undef FUNC_NAME |
0f2d19dd | 228 | |
1bbd0b84 GB |
229 | GUILE_PROC(scm_current_time, "current-time", 0, 0, 0, |
230 | (void), | |
4079f87e GB |
231 | "Returns the number of seconds since 1970-01-01 00:00:00 UTC, excluding |
232 | leap seconds.") | |
1bbd0b84 | 233 | #define FUNC_NAME s_scm_current_time |
0f2d19dd | 234 | { |
19468eff GH |
235 | timet timv; |
236 | ||
237 | SCM_DEFER_INTS; | |
238 | if ((timv = time (0)) == -1) | |
1bbd0b84 | 239 | SCM_SYSERROR; |
19468eff GH |
240 | SCM_ALLOW_INTS; |
241 | return scm_long2num((long) timv); | |
242 | } | |
1bbd0b84 | 243 | #undef FUNC_NAME |
19468eff | 244 | |
1bbd0b84 GB |
245 | GUILE_PROC (scm_gettimeofday, "gettimeofday", 0, 0, 0, |
246 | (void), | |
4079f87e GB |
247 | "Returns a pair containing the number of seconds and microseconds since |
248 | 1970-01-01 00:00:00 UTC, excluding leap seconds. Note: whether true | |
249 | microsecond resolution is available depends on the operating system.") | |
1bbd0b84 | 250 | #define FUNC_NAME s_scm_gettimeofday |
19468eff GH |
251 | { |
252 | #ifdef HAVE_GETTIMEOFDAY | |
253 | struct timeval time; | |
254 | ||
255 | SCM_DEFER_INTS; | |
256 | if (gettimeofday (&time, NULL) == -1) | |
1bbd0b84 | 257 | SCM_SYSERROR; |
19468eff GH |
258 | SCM_ALLOW_INTS; |
259 | return scm_cons (scm_long2num ((long) time.tv_sec), | |
260 | scm_long2num ((long) time.tv_usec)); | |
261 | #else | |
262 | # ifdef HAVE_FTIME | |
263 | struct timeb time; | |
264 | ||
265 | ftime(&time); | |
266 | return scm_cons (scm_long2num ((long) time.time), | |
9a81afca | 267 | SCM_MAKINUM (time.millitm * 1000)); |
19468eff GH |
268 | # else |
269 | timet timv; | |
270 | ||
271 | SCM_DEFER_INTS; | |
272 | if ((timv = time (0)) == -1) | |
1bbd0b84 | 273 | SCM_SYSERROR; |
19468eff GH |
274 | SCM_ALLOW_INTS; |
275 | return scm_cons (scm_long2num (timv), SCM_MAKINUM (0)); | |
276 | # endif | |
277 | #endif | |
278 | } | |
1bbd0b84 | 279 | #undef FUNC_NAME |
19468eff GH |
280 | |
281 | static SCM | |
282 | filltime (struct tm *bd_time, int zoff, char *zname) | |
283 | { | |
a8741caa | 284 | SCM result = scm_make_vector (SCM_MAKINUM(11), SCM_UNDEFINED); |
19468eff GH |
285 | |
286 | SCM_VELTS (result)[0] = SCM_MAKINUM (bd_time->tm_sec); | |
287 | SCM_VELTS (result)[1] = SCM_MAKINUM (bd_time->tm_min); | |
288 | SCM_VELTS (result)[2] = SCM_MAKINUM (bd_time->tm_hour); | |
289 | SCM_VELTS (result)[3] = SCM_MAKINUM (bd_time->tm_mday); | |
290 | SCM_VELTS (result)[4] = SCM_MAKINUM (bd_time->tm_mon); | |
291 | SCM_VELTS (result)[5] = SCM_MAKINUM (bd_time->tm_year); | |
292 | SCM_VELTS (result)[6] = SCM_MAKINUM (bd_time->tm_wday); | |
293 | SCM_VELTS (result)[7] = SCM_MAKINUM (bd_time->tm_yday); | |
294 | SCM_VELTS (result)[8] = SCM_MAKINUM (bd_time->tm_isdst); | |
295 | SCM_VELTS (result)[9] = SCM_MAKINUM (zoff); | |
b9525b92 | 296 | SCM_VELTS (result)[10] = zname ? scm_makfrom0str (zname) : SCM_BOOL_F; |
19468eff GH |
297 | return result; |
298 | } | |
299 | ||
ef9ff3fd GH |
300 | static char tzvar[3] = "TZ"; |
301 | extern char ** environ; | |
302 | ||
303 | static char ** | |
3eeba8d4 | 304 | setzone (SCM zone, int pos, const char *subr) |
b9525b92 | 305 | { |
ef9ff3fd | 306 | char **oldenv = 0; |
b9525b92 GH |
307 | |
308 | if (!SCM_UNBNDP (zone)) | |
309 | { | |
ef9ff3fd | 310 | static char *tmpenv[2]; |
b9525b92 GH |
311 | char *buf; |
312 | ||
ef9ff3fd | 313 | /* if zone was supplied, set the environment temporarily. */ |
0c95b57d | 314 | SCM_ASSERT (SCM_ROSTRINGP (zone), zone, pos, subr); |
89958ad0 | 315 | SCM_COERCE_SUBSTR (zone); |
ef9ff3fd GH |
316 | buf = scm_must_malloc (SCM_LENGTH (zone) + sizeof (tzvar) + 1, |
317 | subr); | |
318 | sprintf (buf, "%s=%s", tzvar, SCM_ROCHARS (zone)); | |
319 | oldenv = environ; | |
320 | tmpenv[0] = buf; | |
321 | tmpenv[1] = 0; | |
322 | environ = tmpenv; | |
b9525b92 GH |
323 | tzset(); |
324 | } | |
ef9ff3fd | 325 | return oldenv; |
b9525b92 GH |
326 | } |
327 | ||
328 | static void | |
3eeba8d4 | 329 | restorezone (SCM zone, char **oldenv, const char *subr) |
b9525b92 GH |
330 | { |
331 | if (!SCM_UNBNDP (zone)) | |
332 | { | |
ef9ff3fd GH |
333 | scm_must_free (environ[0]); |
334 | environ = oldenv; | |
b9525b92 GH |
335 | tzset(); |
336 | } | |
337 | } | |
338 | ||
339 | ||
1bbd0b84 GB |
340 | GUILE_PROC (scm_localtime, "localtime", 1, 1, 0, |
341 | (SCM time, SCM zone), | |
4079f87e GB |
342 | "Returns an object representing the broken down components of @var{time}, |
343 | an integer like the one returned by @code{current-time}. The time zone | |
344 | for the calculation is optionally specified by @var{zone} (a string), | |
345 | otherwise the @code{TZ} environment variable or the system default is | |
346 | used.") | |
1bbd0b84 | 347 | #define FUNC_NAME s_scm_localtime |
19468eff GH |
348 | { |
349 | timet itime; | |
4edc089c | 350 | struct tm *ltptr, lt, *utc; |
19468eff GH |
351 | SCM result; |
352 | int zoff; | |
353 | char *zname = 0; | |
ef9ff3fd | 354 | char **oldenv; |
19468eff GH |
355 | int err; |
356 | ||
1bbd0b84 | 357 | itime = SCM_NUM2LONG (1,time); |
19468eff | 358 | SCM_DEFER_INTS; |
1bbd0b84 | 359 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
4edc089c | 360 | ltptr = localtime (&itime); |
19468eff | 361 | err = errno; |
4edc089c | 362 | if (ltptr) |
19468eff | 363 | { |
4d3bacdd | 364 | const char *ptr; |
ef9ff3fd GH |
365 | |
366 | /* copy zone name before calling gmtime or tzset. */ | |
b9525b92 | 367 | #ifdef HAVE_TM_ZONE |
ef9ff3fd | 368 | ptr = ltptr->tm_zone; |
b9525b92 GH |
369 | #else |
370 | # ifdef HAVE_TZNAME | |
ef9ff3fd | 371 | ptr = tzname[ (ltptr->tm_isdst == 1) ? 1 : 0 ]; |
4edc089c | 372 | # else |
1bbd0b84 | 373 | SCM_MISC_ERROR ("Not fully implemented on this platform",_EOL); |
4edc089c | 374 | # endif |
b9525b92 | 375 | #endif |
1bbd0b84 | 376 | zname = SCM_MUST_MALLOC (strlen (ptr) + 1); |
ef9ff3fd | 377 | strcpy (zname, ptr); |
19468eff | 378 | } |
ef9ff3fd GH |
379 | /* the struct is copied in case localtime and gmtime share a buffer. */ |
380 | if (ltptr) | |
381 | lt = *ltptr; | |
382 | utc = gmtime (&itime); | |
383 | if (utc == NULL) | |
384 | err = errno; | |
1bbd0b84 | 385 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 | 386 | /* delayed until zone has been restored. */ |
19468eff | 387 | errno = err; |
4edc089c | 388 | if (utc == NULL || ltptr == NULL) |
1bbd0b84 | 389 | SCM_SYSERROR; |
19468eff GH |
390 | |
391 | /* calculate timezone offset in seconds west of UTC. */ | |
4edc089c GH |
392 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
393 | + utc->tm_sec - lt.tm_sec; | |
394 | if (utc->tm_year < lt.tm_year) | |
19468eff | 395 | zoff -= 24 * 60 * 60; |
4edc089c | 396 | else if (utc->tm_year > lt.tm_year) |
19468eff | 397 | zoff += 24 * 60 * 60; |
4edc089c | 398 | else if (utc->tm_yday < lt.tm_yday) |
19468eff | 399 | zoff -= 24 * 60 * 60; |
4edc089c | 400 | else if (utc->tm_yday > lt.tm_yday) |
19468eff GH |
401 | zoff += 24 * 60 * 60; |
402 | ||
4edc089c | 403 | result = filltime (<, zoff, zname); |
19468eff | 404 | SCM_ALLOW_INTS; |
ef9ff3fd | 405 | scm_must_free (zname); |
19468eff GH |
406 | return result; |
407 | } | |
1bbd0b84 | 408 | #undef FUNC_NAME |
19468eff | 409 | |
1bbd0b84 GB |
410 | GUILE_PROC (scm_gmtime, "gmtime", 1, 0, 0, |
411 | (SCM time), | |
4079f87e GB |
412 | "Returns an object representing the broken down components of @var{time}, |
413 | an integer like the one returned by @code{current-time}. The values | |
414 | are calculated for UTC.") | |
1bbd0b84 | 415 | #define FUNC_NAME s_scm_gmtime |
19468eff GH |
416 | { |
417 | timet itime; | |
418 | struct tm *bd_time; | |
419 | SCM result; | |
420 | ||
1bbd0b84 | 421 | itime = SCM_NUM2LONG (1,time); |
19468eff GH |
422 | SCM_DEFER_INTS; |
423 | bd_time = gmtime (&itime); | |
424 | if (bd_time == NULL) | |
1bbd0b84 | 425 | SCM_SYSERROR; |
19468eff GH |
426 | result = filltime (bd_time, 0, "GMT"); |
427 | SCM_ALLOW_INTS; | |
428 | return result; | |
429 | } | |
1bbd0b84 | 430 | #undef FUNC_NAME |
19468eff | 431 | |
b9525b92 GH |
432 | /* copy time components from a Scheme object to a struct tm. */ |
433 | static void | |
3eeba8d4 | 434 | bdtime2c (SCM sbd_time, struct tm *lt, int pos, const char *subr) |
19468eff | 435 | { |
55a7fc62 GH |
436 | SCM *velts; |
437 | int i; | |
438 | ||
0c95b57d | 439 | SCM_ASSERT (SCM_VECTORP (sbd_time) |
55a7fc62 | 440 | && SCM_LENGTH (sbd_time) == 11, |
b9525b92 | 441 | sbd_time, pos, subr); |
55a7fc62 GH |
442 | velts = SCM_VELTS (sbd_time); |
443 | for (i = 0; i < 10; i++) | |
444 | { | |
445 | SCM_ASSERT (SCM_INUMP (velts[i]), sbd_time, pos, subr); | |
446 | } | |
0c95b57d | 447 | SCM_ASSERT (SCM_FALSEP (velts[10]) || SCM_STRINGP (velts[10]), |
55a7fc62 GH |
448 | sbd_time, pos, subr); |
449 | ||
450 | lt->tm_sec = SCM_INUM (velts[0]); | |
451 | lt->tm_min = SCM_INUM (velts[1]); | |
452 | lt->tm_hour = SCM_INUM (velts[2]); | |
453 | lt->tm_mday = SCM_INUM (velts[3]); | |
454 | lt->tm_mon = SCM_INUM (velts[4]); | |
455 | lt->tm_year = SCM_INUM (velts[5]); | |
456 | lt->tm_wday = SCM_INUM (velts[6]); | |
457 | lt->tm_yday = SCM_INUM (velts[7]); | |
458 | lt->tm_isdst = SCM_INUM (velts[8]); | |
c7abe4f3 | 459 | #ifdef HAVE_TM_ZONE |
55a7fc62 GH |
460 | lt->tm_gmtoff = SCM_INUM (velts[9]); |
461 | if (SCM_FALSEP (velts[10])) | |
462 | lt->tm_zone = NULL; | |
463 | else | |
464 | lt->tm_zone = SCM_CHARS (velts[10]); | |
c7abe4f3 | 465 | #endif |
b9525b92 GH |
466 | } |
467 | ||
1bbd0b84 GB |
468 | GUILE_PROC (scm_mktime, "mktime", 1, 1, 0, |
469 | (SCM sbd_time, SCM zone), | |
4079f87e GB |
470 | "@var{bd-time} is an object representing broken down time and @code{zone} |
471 | is an optional time zone specifier (otherwise the TZ environment variable | |
472 | or the system default is used). | |
473 | ||
474 | Returns a pair: the CAR is a corresponding | |
475 | integer time value like that returned | |
476 | by @code{current-time}; the CDR is a broken down time object, similar to | |
477 | as @var{bd-time} but with normalized values.") | |
1bbd0b84 | 478 | #define FUNC_NAME s_scm_mktime |
b9525b92 GH |
479 | { |
480 | timet itime; | |
481 | struct tm lt, *utc; | |
482 | SCM result; | |
483 | int zoff; | |
484 | char *zname = 0; | |
ef9ff3fd | 485 | char **oldenv; |
b9525b92 GH |
486 | int err; |
487 | ||
1bbd0b84 | 488 | bdtime2c (sbd_time, <, SCM_ARG1, FUNC_NAME); |
19468eff GH |
489 | |
490 | SCM_DEFER_INTS; | |
1bbd0b84 | 491 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
19468eff | 492 | itime = mktime (<); |
b9525b92 | 493 | err = errno; |
19468eff | 494 | |
b9525b92 GH |
495 | if (itime != -1) |
496 | { | |
4d3bacdd | 497 | const char *ptr; |
ef9ff3fd GH |
498 | |
499 | /* copy zone name before calling gmtime or tzset. */ | |
b9525b92 | 500 | #ifdef HAVE_TM_ZONE |
ef9ff3fd | 501 | ptr = lt.tm_zone; |
b9525b92 GH |
502 | #else |
503 | # ifdef HAVE_TZNAME | |
ef9ff3fd | 504 | ptr = tzname[ (lt.tm_isdst == 1) ? 1 : 0 ]; |
4edc089c | 505 | # else |
ef9ff3fd | 506 | scm_misc_error (s_mktime, "Not fully implemented on this platform", |
da5b3eb1 | 507 | SCM_EOL); |
4edc089c | 508 | # endif |
b9525b92 | 509 | #endif |
1bbd0b84 | 510 | zname = SCM_MUST_MALLOC (strlen (ptr) + 1); |
ef9ff3fd | 511 | strcpy (zname, ptr); |
b9525b92 | 512 | } |
ef9ff3fd GH |
513 | |
514 | /* get timezone offset in seconds west of UTC. */ | |
515 | utc = gmtime (&itime); | |
516 | if (utc == NULL) | |
517 | err = errno; | |
518 | ||
1bbd0b84 | 519 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 GH |
520 | /* delayed until zone has been restored. */ |
521 | errno = err; | |
522 | if (utc == NULL || itime == -1) | |
1bbd0b84 | 523 | SCM_SYSERROR; |
b9525b92 | 524 | |
19468eff GH |
525 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
526 | + utc->tm_sec - lt.tm_sec; | |
527 | if (utc->tm_year < lt.tm_year) | |
528 | zoff -= 24 * 60 * 60; | |
529 | else if (utc->tm_year > lt.tm_year) | |
530 | zoff += 24 * 60 * 60; | |
531 | else if (utc->tm_yday < lt.tm_yday) | |
532 | zoff -= 24 * 60 * 60; | |
533 | else if (utc->tm_yday > lt.tm_yday) | |
534 | zoff += 24 * 60 * 60; | |
535 | ||
19468eff GH |
536 | result = scm_cons (scm_long2num ((long) itime), |
537 | filltime (<, zoff, zname)); | |
538 | SCM_ALLOW_INTS; | |
ef9ff3fd | 539 | scm_must_free (zname); |
19468eff | 540 | return result; |
0f2d19dd | 541 | } |
1bbd0b84 | 542 | #undef FUNC_NAME |
0f2d19dd | 543 | |
1bbd0b84 GB |
544 | GUILE_PROC (scm_tzset, "tzset", 0, 0, 0, |
545 | (void), | |
4079f87e GB |
546 | "Initialize the timezone from the TZ environment variable or the system |
547 | default. Usually this is done automatically by other procedures which | |
548 | use the time zone, but this procedure may need to be used if TZ | |
549 | is changed.") | |
1bbd0b84 | 550 | #define FUNC_NAME s_scm_tzset |
0f2d19dd | 551 | { |
19468eff GH |
552 | tzset(); |
553 | return SCM_UNSPECIFIED; | |
0f2d19dd | 554 | } |
1bbd0b84 | 555 | #undef FUNC_NAME |
0f2d19dd | 556 | |
1bbd0b84 GB |
557 | GUILE_PROC (scm_strftime, "strftime", 2, 0, 0, |
558 | (SCM format, SCM stime), | |
4079f87e GB |
559 | "Formats a time specification @var{time} using @var{template}. @var{time} |
560 | is an object with time components in the form returned by @code{localtime} | |
561 | or @code{gmtime}. @var{template} is a string which can include formatting | |
562 | specifications introduced by a @code{%} character. The formatting of | |
563 | month and day names is dependent on the current locale. The value returned | |
564 | is the formatted string. | |
565 | @xref{Formatting Date and Time, , , libc, The GNU C Library Reference Manual}.)") | |
1bbd0b84 | 566 | #define FUNC_NAME s_scm_strftime |
b9525b92 GH |
567 | { |
568 | struct tm t; | |
569 | ||
570 | char *tbuf; | |
571 | int size = 50; | |
572 | char *fmt; | |
573 | int len; | |
ef9ff3fd | 574 | SCM result; |
b9525b92 | 575 | |
1bbd0b84 GB |
576 | SCM_VALIDATE_ROSTRING(1,format); |
577 | bdtime2c (stime, &t, SCM_ARG2, FUNC_NAME); | |
b9525b92 | 578 | |
89958ad0 | 579 | SCM_COERCE_SUBSTR (format); |
b9525b92 GH |
580 | fmt = SCM_ROCHARS (format); |
581 | len = SCM_ROLENGTH (format); | |
582 | ||
1bbd0b84 | 583 | tbuf = SCM_MUST_MALLOC (size); |
b9525b92 GH |
584 | while ((len = strftime (tbuf, size, fmt, &t)) == size) |
585 | { | |
586 | scm_must_free (tbuf); | |
587 | size *= 2; | |
1bbd0b84 | 588 | tbuf = SCM_MUST_MALLOC (size); |
b9525b92 | 589 | } |
ef9ff3fd GH |
590 | result = scm_makfromstr (tbuf, len, 0); |
591 | scm_must_free (tbuf); | |
592 | return result; | |
b9525b92 | 593 | } |
1bbd0b84 | 594 | #undef FUNC_NAME |
b9525b92 | 595 | |
1bbd0b84 GB |
596 | GUILE_PROC (scm_strptime, "strptime", 2, 0, 0, |
597 | (SCM format, SCM string), | |
4079f87e GB |
598 | "Performs the reverse action to @code{strftime}, parsing @var{string} |
599 | according to the specification supplied in @var{template}. The | |
600 | interpretation of month and day names is dependent on the current | |
601 | locale. The | |
602 | value returned is a pair. The CAR has an object with time components | |
603 | in the form returned by @code{localtime} or @code{gmtime}, | |
604 | but the time zone components | |
605 | are not usefully set. | |
606 | The CDR reports the number of characters from @var{string} which | |
607 | were used for the conversion.") | |
1bbd0b84 | 608 | #define FUNC_NAME s_scm_strptime |
b9525b92 GH |
609 | { |
610 | #ifdef HAVE_STRPTIME | |
611 | struct tm t; | |
612 | char *fmt, *str, *rest; | |
613 | ||
1bbd0b84 GB |
614 | SCM_VALIDATE_ROSTRING(1,format); |
615 | SCM_VALIDATE_ROSTRING(2,string); | |
b9525b92 | 616 | |
89958ad0 JB |
617 | SCM_COERCE_SUBSTR (format); |
618 | SCM_COERCE_SUBSTR (string); | |
b9525b92 GH |
619 | fmt = SCM_ROCHARS (format); |
620 | str = SCM_ROCHARS (string); | |
621 | ||
622 | /* initialize the struct tm */ | |
623 | #define tm_init(field) t.field = 0 | |
624 | tm_init (tm_sec); | |
625 | tm_init (tm_min); | |
626 | tm_init (tm_hour); | |
627 | tm_init (tm_mday); | |
628 | tm_init (tm_mon); | |
629 | tm_init (tm_year); | |
630 | tm_init (tm_wday); | |
631 | tm_init (tm_yday); | |
632 | #undef tm_init | |
633 | ||
634 | t.tm_isdst = -1; | |
635 | SCM_DEFER_INTS; | |
636 | if ((rest = strptime (str, fmt, &t)) == NULL) | |
1bbd0b84 | 637 | SCM_SYSERROR; |
b9525b92 GH |
638 | |
639 | SCM_ALLOW_INTS; | |
640 | return scm_cons (filltime (&t, 0, NULL), SCM_MAKINUM (rest - str)); | |
641 | ||
642 | #else | |
1bbd0b84 | 643 | SCM_SYSMISSING; |
b9525b92 GH |
644 | #endif |
645 | } | |
1bbd0b84 | 646 | #undef FUNC_NAME |
b9525b92 | 647 | |
0f2d19dd JB |
648 | void |
649 | scm_init_stime() | |
0f2d19dd JB |
650 | { |
651 | scm_sysintern("internal-time-units-per-second", | |
19468eff | 652 | scm_long2num((long)CLKTCK)); |
0f2d19dd JB |
653 | |
654 | #ifdef HAVE_FTIME | |
655 | if (!scm_your_base.time) ftime(&scm_your_base); | |
656 | #else | |
657 | if (!scm_your_base) time(&scm_your_base); | |
658 | #endif | |
659 | ||
660 | if (!scm_my_base) scm_my_base = mytime(); | |
661 | ||
876c87ce | 662 | scm_add_feature ("current-time"); |
0f2d19dd JB |
663 | #include "stime.x" |
664 | } | |
665 |