Mercurial > octave-nkf
annotate liboctave/oct-time.cc @ 14138:72c96de7a403 stable
maint: update copyright notices for 2012
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 02 Jan 2012 14:25:41 -0500 |
| parents | 1126c2907878 |
| children | 560317fd5977 |
| rev | line source |
|---|---|
| 3253 | 1 /* |
| 2 | |
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3 Copyright (C) 1999-2012 John W. Eaton |
| 3253 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 3253 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 3253 | 20 |
| 21 */ | |
| 22 | |
| 23 #ifdef HAVE_CONFIG_H | |
| 24 #include <config.h> | |
| 25 #endif | |
| 26 | |
| 3290 | 27 #include <climits> |
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28 #include <ctime> |
| 3253 | 29 |
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30 #include <sys/time.h> |
| 3607 | 31 #include <sys/types.h> |
| 32 #include <unistd.h> | |
| 33 | |
| 10279 | 34 #include "strftime.h" |
| 9946 | 35 |
| 3253 | 36 #include "lo-error.h" |
| 7231 | 37 #include "lo-math.h" |
| 3253 | 38 #include "lo-utils.h" |
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39 #include "oct-locbuf.h" |
| 3253 | 40 #include "oct-time.h" |
| 41 | |
| 42 octave_time::octave_time (const octave_base_tm& tm) | |
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43 : ot_unix_time (), ot_usec () |
| 3253 | 44 { |
| 45 struct tm t; | |
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46 |
| 3253 | 47 t.tm_sec = tm.sec (); |
| 48 t.tm_min = tm.min (); | |
| 49 t.tm_hour = tm.hour (); | |
| 50 t.tm_mday = tm.mday (); | |
| 51 t.tm_mon = tm.mon (); | |
| 52 t.tm_year = tm.year (); | |
| 53 t.tm_wday = tm.wday (); | |
| 54 t.tm_yday = tm.yday (); | |
| 55 t.tm_isdst = tm.isdst (); | |
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56 |
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57 #if defined (HAVE_STRUCT_TM_GMTOFF) |
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58 t.tm_gmtoff = tm.gmtoff (); |
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59 #endif |
| 3253 | 60 |
| 3887 | 61 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 3504 | 62 std::string s = tm.zone (); |
| 3344 | 63 char *ps = strsave (s.c_str ()); |
| 64 t.tm_zone = ps; | |
| 3253 | 65 #endif |
| 66 | |
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67 ot_unix_time = gnulib::mktime (&t); |
| 3253 | 68 |
| 3887 | 69 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 3344 | 70 delete [] ps; |
| 71 #endif | |
| 72 | |
| 3253 | 73 ot_usec = tm.usec (); |
| 74 } | |
| 75 | |
| 3504 | 76 std::string |
| 3255 | 77 octave_time::ctime (void) const |
| 78 { | |
| 79 return octave_localtime (*this) . asctime (); | |
| 80 } | |
| 81 | |
| 3253 | 82 void |
| 83 octave_time::stamp (void) | |
| 84 { | |
| 85 struct timeval tp; | |
| 86 | |
| 10411 | 87 gnulib::gettimeofday (&tp, 0); |
| 3253 | 88 |
| 89 ot_unix_time = tp.tv_sec; | |
| 4085 | 90 ot_usec = tp.tv_usec; |
| 3253 | 91 } |
| 92 | |
| 3736 | 93 // From the mktime() manual page: |
| 94 // | |
| 95 // The mktime() function converts a broken-down time structure, | |
| 96 // expressed as local time, to calendar time representation. | |
| 97 // | |
| 98 // <snip> | |
| 99 // | |
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100 // If structure members are outside their legal interval, they |
| 3736 | 101 // will be normalized (so that, e.g., 40 October is changed into |
| 102 // 9 November). | |
| 103 // | |
| 104 // So, we no longer check limits here. | |
| 105 | |
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106 #define DEFINE_SET_FIELD_FCN(type, f, lo, hi) \ |
| 3253 | 107 octave_base_tm& \ |
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108 octave_base_tm::f (type v) \ |
| 3736 | 109 { \ |
| 110 tm_ ## f = v; \ | |
| 111 \ | |
| 112 return *this; \ | |
| 113 } | |
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114 |
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115 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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116 DEFINE_SET_FIELD_FCN (int, f, lo, hi) |
| 3253 | 117 |
| 118 DEFINE_SET_INT_FIELD_FCN (usec, 0, 1000000) | |
| 119 DEFINE_SET_INT_FIELD_FCN (sec, 0, 61) | |
| 120 DEFINE_SET_INT_FIELD_FCN (min, 0, 59) | |
| 121 DEFINE_SET_INT_FIELD_FCN (hour, 0, 23) | |
| 122 DEFINE_SET_INT_FIELD_FCN (mday, 1, 31) | |
| 123 DEFINE_SET_INT_FIELD_FCN (mon, 0, 11) | |
| 124 DEFINE_SET_INT_FIELD_FCN (year, INT_MIN, INT_MAX) | |
| 125 DEFINE_SET_INT_FIELD_FCN (wday, 0, 6) | |
| 126 DEFINE_SET_INT_FIELD_FCN (yday, 0, 365) | |
| 127 DEFINE_SET_INT_FIELD_FCN (isdst, 0, 1) | |
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128 DEFINE_SET_FIELD_FCN (long, gmtoff, -86400, 0) |
| 3253 | 129 |
| 130 octave_base_tm& | |
| 3504 | 131 octave_base_tm::zone (const std::string& s) |
| 3253 | 132 { |
| 133 tm_zone = s; | |
| 134 return *this; | |
| 135 } | |
| 136 | |
| 137 #if !defined STRFTIME_BUF_INITIAL_SIZE | |
| 138 #define STRFTIME_BUF_INITIAL_SIZE 128 | |
| 139 #endif | |
| 140 | |
| 3504 | 141 std::string |
| 142 octave_base_tm::strftime (const std::string& fmt) const | |
| 3253 | 143 { |
| 3504 | 144 std::string retval; |
| 3253 | 145 |
| 3709 | 146 if (! fmt.empty ()) |
| 147 { | |
| 148 struct tm t; | |
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149 |
| 3709 | 150 t.tm_sec = tm_sec; |
| 151 t.tm_min = tm_min; | |
| 152 t.tm_hour = tm_hour; | |
| 153 t.tm_mday = tm_mday; | |
| 154 t.tm_mon = tm_mon; | |
| 155 t.tm_year = tm_year; | |
| 156 t.tm_wday = tm_wday; | |
| 157 t.tm_yday = tm_yday; | |
| 158 t.tm_isdst = tm_isdst; | |
| 3253 | 159 |
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160 #if defined (HAVE_STRUCT_TM_GMTOFF) |
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161 t.tm_gmtoff = tm_gmtoff; |
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162 #endif |
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163 |
| 3887 | 164 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 3709 | 165 char *ps = strsave (tm_zone.c_str ()); |
| 166 t.tm_zone = ps; | |
| 3253 | 167 #endif |
| 168 | |
| 3709 | 169 const char *fmt_str = fmt.c_str (); |
| 3253 | 170 |
| 3709 | 171 char *buf = 0; |
| 172 size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; | |
| 173 size_t chars_written = 0; | |
| 3253 | 174 |
| 3709 | 175 while (chars_written == 0) |
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176 { |
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177 delete [] buf; |
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178 buf = new char[bufsize]; |
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179 buf[0] = '\0'; |
| 3253 | 180 |
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181 chars_written = nstrftime (buf, bufsize, fmt_str, &t, 0, 0); |
| 3253 | 182 |
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183 bufsize *= 2; |
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184 } |
| 3253 | 185 |
| 3887 | 186 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 3709 | 187 delete [] ps; |
| 3344 | 188 #endif |
| 189 | |
| 3709 | 190 retval = buf; |
| 3253 | 191 |
| 3709 | 192 delete [] buf; |
| 193 } | |
| 3253 | 194 |
| 195 return retval; | |
| 196 } | |
| 197 | |
| 198 void | |
| 199 octave_base_tm::init (void *p) | |
| 200 { | |
| 7407 | 201 if (! p) |
| 202 return; | |
| 203 | |
| 3253 | 204 struct tm *t = static_cast<struct tm*> (p); |
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205 |
| 3253 | 206 tm_sec = t->tm_sec; |
| 207 tm_min = t->tm_min; | |
| 208 tm_hour = t->tm_hour; | |
| 209 tm_mday = t->tm_mday; | |
| 210 tm_mon = t->tm_mon; | |
| 211 tm_year = t->tm_year; | |
| 212 tm_wday = t->tm_wday; | |
| 213 tm_yday = t->tm_yday; | |
| 214 tm_isdst = t->tm_isdst; | |
| 215 | |
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216 #if defined (HAVE_STRUCT_TM_GMTOFF) |
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217 tm_gmtoff = t->tm_gmtoff; |
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218 #endif |
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219 |
| 3887 | 220 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 7270 | 221 if (t->tm_zone) |
| 222 tm_zone = t->tm_zone; | |
| 3253 | 223 #elif defined (HAVE_TZNAME) |
| 224 if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
| 225 tm_zone = tzname[t->tm_isdst]; | |
| 226 #endif | |
| 227 } | |
| 228 | |
| 229 void | |
| 230 octave_localtime::init (const octave_time& ot) | |
| 231 { | |
| 232 tm_usec = ot.usec (); | |
| 233 | |
| 7065 | 234 time_t t = ot.unix_time (); |
| 3253 | 235 |
| 236 octave_base_tm::init (localtime (&t)); | |
| 237 } | |
| 238 | |
| 239 void | |
| 240 octave_gmtime::init (const octave_time& ot) | |
| 241 { | |
| 242 tm_usec = ot.usec (); | |
| 243 | |
| 7065 | 244 time_t t = ot.unix_time (); |
| 3253 | 245 |
| 246 octave_base_tm::init (gmtime (&t)); | |
| 247 } | |
| 248 | |
| 3465 | 249 void |
| 3504 | 250 octave_strptime::init (const std::string& str, const std::string& fmt) |
| 3465 | 251 { |
| 252 struct tm t; | |
| 253 | |
| 254 t.tm_sec = 0; | |
| 255 t.tm_min = 0; | |
| 256 t.tm_hour = 0; | |
| 257 t.tm_mday = 0; | |
| 6996 | 258 t.tm_mon = -1; |
| 259 t.tm_year = INT_MIN; | |
| 3465 | 260 t.tm_wday = 0; |
| 261 t.tm_yday = 0; | |
| 262 t.tm_isdst = 0; | |
| 263 | |
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264 #if defined (HAVE_STRUCT_TM_GMTOFF) |
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265 t.tm_gmtoff = 0; |
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266 #endif |
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267 |
| 3887 | 268 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 3465 | 269 char *ps = strsave (""); |
| 270 t.tm_zone = ps; | |
| 271 #endif | |
| 272 | |
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273 const char *p = str.c_str (); |
| 3465 | 274 |
| 10411 | 275 char *q = gnulib::strptime (p, fmt.c_str (), &t); |
| 3465 | 276 |
| 6995 | 277 // Fill in wday and yday, but only if mday is valid and the mon and year |
| 278 // are filled in, avoiding issues with mktime and invalid dates. | |
| 6996 | 279 if (t.tm_mday != 0 && t.tm_mon >= 0 && t.tm_year != INT_MIN) |
| 6995 | 280 { |
| 281 t.tm_isdst = -1; | |
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282 gnulib::mktime (&t); |
| 6995 | 283 } |
| 6941 | 284 |
| 6996 | 285 if (t.tm_mon < 0) |
| 286 t.tm_mon = 0; | |
| 287 | |
| 288 if (t.tm_year == INT_MIN) | |
| 289 t.tm_year = 0; | |
| 290 | |
| 5675 | 291 if (q) |
| 292 nchars = q - p + 1; | |
| 293 else | |
| 294 nchars = 0; | |
| 3465 | 295 |
| 296 octave_base_tm::init (&t); | |
| 297 | |
| 3887 | 298 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
| 7058 | 299 delete [] ps; |
| 3465 | 300 #endif |
| 301 } |