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1 /* |
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2 |
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3 Copyright (C) 1999 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <climits> |
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28 #include <cmath> |
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29 |
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30 #include "lo-error.h" |
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31 #include "lo-utils.h" |
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32 #include "oct-time.h" |
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33 |
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34 octave_time::octave_time (const octave_base_tm& tm) |
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35 { |
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36 struct tm t; |
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37 |
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38 t.tm_sec = tm.sec (); |
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39 t.tm_min = tm.min (); |
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40 t.tm_hour = tm.hour (); |
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41 t.tm_mday = tm.mday (); |
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42 t.tm_mon = tm.mon (); |
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43 t.tm_year = tm.year (); |
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44 t.tm_wday = tm.wday (); |
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45 t.tm_yday = tm.yday (); |
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46 t.tm_isdst = tm.isdst (); |
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47 |
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48 #if defined (HAVE_TM_ZONE) |
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49 string s = tm.zone (); |
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50 t.tm_zone = s.c_str (); |
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51 #endif |
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52 |
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53 ot_unix_time = mktime (&t); |
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54 |
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55 ot_usec = tm.usec (); |
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56 } |
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57 |
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58 string |
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59 octave_time::ctime (void) const |
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60 { |
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61 return octave_localtime (*this) . asctime (); |
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62 } |
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63 |
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64 void |
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65 octave_time::stamp (void) |
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66 { |
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67 #if defined (HAVE_GETTIMEOFDAY) |
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68 |
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69 struct timeval tp; |
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70 |
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71 #if defined (GETTIMEOFDAY_NO_TZ) |
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72 gettimeofday (&tp); |
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73 #else |
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74 gettimeofday (&tp, 0); |
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75 #endif |
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76 |
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77 ot_unix_time = tp.tv_sec; |
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78 |
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79 ot_usec = tp.tv_usec; |
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80 |
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81 #else |
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82 |
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83 ot_unix_time = time (0); |
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84 |
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85 #endif |
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86 } |
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87 |
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88 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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89 octave_base_tm& \ |
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90 octave_base_tm::f (int v) \ |
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91 { \ |
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92 if (v < lo || v > hi) \ |
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93 (*current_liboctave_error_handler) \ |
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94 ("invalid value specified for " #f); \ |
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95 \ |
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96 tm_ ## f = v; \ |
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97 \ |
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98 return *this; \ |
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99 } |
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100 |
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101 DEFINE_SET_INT_FIELD_FCN (usec, 0, 1000000) |
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102 DEFINE_SET_INT_FIELD_FCN (sec, 0, 61) |
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103 DEFINE_SET_INT_FIELD_FCN (min, 0, 59) |
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104 DEFINE_SET_INT_FIELD_FCN (hour, 0, 23) |
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105 DEFINE_SET_INT_FIELD_FCN (mday, 1, 31) |
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106 DEFINE_SET_INT_FIELD_FCN (mon, 0, 11) |
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107 DEFINE_SET_INT_FIELD_FCN (year, INT_MIN, INT_MAX) |
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108 DEFINE_SET_INT_FIELD_FCN (wday, 0, 6) |
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109 DEFINE_SET_INT_FIELD_FCN (yday, 0, 365) |
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110 DEFINE_SET_INT_FIELD_FCN (isdst, 0, 1) |
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111 |
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112 octave_base_tm& |
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113 octave_base_tm::zone (const string& s) |
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114 { |
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115 tm_zone = s; |
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116 return *this; |
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117 } |
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118 |
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119 #if !defined STRFTIME_BUF_INITIAL_SIZE |
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120 #define STRFTIME_BUF_INITIAL_SIZE 128 |
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121 #endif |
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122 |
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123 string |
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124 octave_base_tm::strftime (const string& fmt) const |
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125 { |
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126 string retval; |
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127 |
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128 struct tm t; |
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129 |
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130 t.tm_sec = tm_sec; |
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131 t.tm_min = tm_min; |
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132 t.tm_hour = tm_hour; |
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133 t.tm_mday = tm_mday; |
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134 t.tm_mon = tm_mon; |
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135 t.tm_year = tm_year; |
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136 t.tm_wday = tm_wday; |
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137 t.tm_yday = tm_yday; |
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138 t.tm_isdst = tm_isdst; |
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139 |
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140 #if defined (HAVE_TM_ZONE) |
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141 t.tm_zone = tm_zone.c_str (); |
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142 #endif |
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143 |
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144 const char *fmt_str = fmt.c_str (); |
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145 |
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146 char *buf = 0; |
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147 size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; |
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148 size_t chars_written = 0; |
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149 |
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150 while (chars_written == 0) |
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151 { |
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152 delete [] buf; |
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153 buf = new char[bufsize]; |
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154 buf[0] = '\0'; |
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155 |
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156 chars_written = ::strftime (buf, bufsize, fmt_str, &t); |
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157 |
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158 bufsize *= 2; |
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159 } |
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160 |
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161 retval = buf; |
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162 |
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163 delete [] buf; |
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164 |
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165 return retval; |
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166 } |
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167 |
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168 void |
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169 octave_base_tm::init (void *p) |
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170 { |
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171 struct tm *t = static_cast<struct tm*> (p); |
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172 |
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173 tm_sec = t->tm_sec; |
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174 tm_min = t->tm_min; |
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175 tm_hour = t->tm_hour; |
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176 tm_mday = t->tm_mday; |
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177 tm_mon = t->tm_mon; |
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178 tm_year = t->tm_year; |
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179 tm_wday = t->tm_wday; |
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180 tm_yday = t->tm_yday; |
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181 tm_isdst = t->tm_isdst; |
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182 |
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183 #if defined (HAVE_TM_ZONE) |
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184 tm_zone = t->tm_zone; |
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185 #elif defined (HAVE_TZNAME) |
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186 if (t->tm_isdst == 0 || t->tm_isdst == 1) |
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187 tm_zone = tzname[t->tm_isdst]; |
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188 #endif |
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189 } |
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190 |
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191 void |
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192 octave_localtime::init (const octave_time& ot) |
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193 { |
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194 tm_usec = ot.usec (); |
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195 |
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196 time_t t = ot; |
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197 |
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198 octave_base_tm::init (localtime (&t)); |
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199 } |
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200 |
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201 void |
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202 octave_gmtime::init (const octave_time& ot) |
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203 { |
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204 tm_usec = ot.usec (); |
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205 |
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206 time_t t = ot; |
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207 |
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208 octave_base_tm::init (gmtime (&t)); |
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209 } |
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210 |
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211 /* |
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212 ;;; Local Variables: *** |
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213 ;;; mode: C++ *** |
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214 ;;; End: *** |
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215 */ |
