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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <climits> |
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29 #include <cmath> |
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30 #include <ctime> |
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31 |
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32 #ifdef HAVE_UNISTD_H |
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33 #ifdef HAVE_SYS_TYPES_H |
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34 #include <sys/types.h> |
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35 #endif |
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36 #include <unistd.h> |
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37 #endif |
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38 |
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39 #if defined (OCTAVE_USE_WINDOWS_API) |
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40 #include <windows.h> |
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41 #undef min |
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42 #undef max |
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43 #endif |
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44 |
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45 #include "lo-error.h" |
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46 #include "lo-utils.h" |
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47 #include "oct-time.h" |
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48 |
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49 #ifndef HAVE_STRFTIME |
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50 // Override any previous definition and use local version. |
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51 extern "C" size_t |
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52 strftime (char *s, size_t maxsize, const char *format, const struct tm *tp); |
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53 #endif |
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54 |
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55 octave_time::octave_time (const octave_base_tm& tm) |
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56 { |
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57 struct tm t; |
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58 |
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59 t.tm_sec = tm.sec (); |
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60 t.tm_min = tm.min (); |
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61 t.tm_hour = tm.hour (); |
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62 t.tm_mday = tm.mday (); |
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63 t.tm_mon = tm.mon (); |
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64 t.tm_year = tm.year (); |
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65 t.tm_wday = tm.wday (); |
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66 t.tm_yday = tm.yday (); |
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67 t.tm_isdst = tm.isdst (); |
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68 |
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69 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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70 std::string s = tm.zone (); |
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71 char *ps = strsave (s.c_str ()); |
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72 t.tm_zone = ps; |
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73 #endif |
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74 |
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75 ot_unix_time = mktime (&t); |
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76 |
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77 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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78 delete [] ps; |
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79 #endif |
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80 |
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81 ot_usec = tm.usec (); |
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82 } |
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83 |
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84 std::string |
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85 octave_time::ctime (void) const |
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86 { |
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87 return octave_localtime (*this) . asctime (); |
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88 } |
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89 |
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90 void |
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91 octave_time::stamp (void) |
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92 { |
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93 #if defined (HAVE_GETTIMEOFDAY) |
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94 |
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95 struct timeval tp; |
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96 |
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97 #if defined (GETTIMEOFDAY_NO_TZ) |
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98 gettimeofday (&tp); |
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99 #else |
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100 gettimeofday (&tp, 0); |
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101 #endif |
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102 |
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103 ot_unix_time = tp.tv_sec; |
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104 ot_usec = tp.tv_usec; |
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105 |
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106 #elif defined (OCTAVE_USE_WINDOWS_API) |
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107 |
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108 // Loosely based on the code from Cygwin |
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109 // Copyright 1996-2002 Red Hat, Inc. |
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110 // Licenced under the GPL. |
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111 |
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112 const LONGLONG TIME_OFFSET = 0x19db1ded53e8000LL; |
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113 |
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114 static int init = 1; |
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115 static LARGE_INTEGER base; |
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116 static LARGE_INTEGER t0; |
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117 static double dt; |
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118 |
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119 if (init) |
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120 { |
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121 LARGE_INTEGER ifreq; |
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122 |
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123 if (QueryPerformanceFrequency (&ifreq)) |
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124 { |
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125 // Get clock frequency |
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126 dt = (double) 1000000.0 / (double) ifreq.QuadPart; |
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127 |
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128 // Get base time as microseconds from Jan 1. 1970 |
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129 int priority = GetThreadPriority (GetCurrentThread ()); |
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130 SetThreadPriority (GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL); |
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131 if (QueryPerformanceCounter (&base)) |
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132 { |
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133 FILETIME f; |
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134 |
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135 GetSystemTimeAsFileTime (&f); |
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136 |
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137 t0.HighPart = f.dwHighDateTime; |
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138 t0.LowPart = f.dwLowDateTime; |
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139 t0.QuadPart -= TIME_OFFSET; |
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140 t0.QuadPart /= 10; |
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141 |
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142 init = 0; |
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143 } |
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144 |
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145 SetThreadPriority (GetCurrentThread (), priority); |
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146 } |
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147 |
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148 if (! init) |
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149 { |
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150 ot_unix_time = time (0); |
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151 ot_usec = 0; |
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152 |
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153 return; |
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154 } |
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155 } |
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156 |
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157 LARGE_INTEGER now; |
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158 |
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159 if (QueryPerformanceCounter (&now)) |
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160 { |
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161 now.QuadPart = (LONGLONG) (dt * (double)(now.QuadPart - base.QuadPart)); |
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162 now.QuadPart += t0.QuadPart; |
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163 |
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164 ot_unix_time = now.QuadPart / 1000000LL; |
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165 ot_usec = now.QuadPart % 1000000LL; |
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166 } |
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167 else |
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168 { |
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169 ot_unix_time = time (0); |
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170 ot_usec = 0; |
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171 } |
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172 |
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173 #else |
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174 |
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175 ot_unix_time = time (0); |
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176 |
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177 #endif |
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178 } |
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179 |
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180 // From the mktime() manual page: |
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181 // |
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182 // The mktime() function converts a broken-down time structure, |
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183 // expressed as local time, to calendar time representation. |
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184 // |
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185 // <snip> |
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186 // |
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187 // If structure members are outside their legal interval, they |
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188 // will be normalized (so that, e.g., 40 October is changed into |
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189 // 9 November). |
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190 // |
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191 // So, we no longer check limits here. |
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192 |
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193 #if 0 |
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194 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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195 octave_base_tm& \ |
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196 octave_base_tm::f (int v) \ |
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197 { \ |
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198 if (v < lo || v > hi) \ |
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199 (*current_liboctave_error_handler) \ |
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200 ("invalid value specified for " #f); \ |
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201 \ |
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202 tm_ ## f = v; \ |
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203 \ |
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204 return *this; \ |
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205 } |
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206 #else |
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207 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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208 octave_base_tm& \ |
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209 octave_base_tm::f (int v) \ |
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210 { \ |
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211 tm_ ## f = v; \ |
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212 \ |
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213 return *this; \ |
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214 } |
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215 #endif |
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216 |
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217 DEFINE_SET_INT_FIELD_FCN (usec, 0, 1000000) |
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218 DEFINE_SET_INT_FIELD_FCN (sec, 0, 61) |
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219 DEFINE_SET_INT_FIELD_FCN (min, 0, 59) |
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220 DEFINE_SET_INT_FIELD_FCN (hour, 0, 23) |
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221 DEFINE_SET_INT_FIELD_FCN (mday, 1, 31) |
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222 DEFINE_SET_INT_FIELD_FCN (mon, 0, 11) |
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223 DEFINE_SET_INT_FIELD_FCN (year, INT_MIN, INT_MAX) |
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224 DEFINE_SET_INT_FIELD_FCN (wday, 0, 6) |
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225 DEFINE_SET_INT_FIELD_FCN (yday, 0, 365) |
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226 DEFINE_SET_INT_FIELD_FCN (isdst, 0, 1) |
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227 |
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228 octave_base_tm& |
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229 octave_base_tm::zone (const std::string& s) |
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230 { |
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231 tm_zone = s; |
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232 return *this; |
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233 } |
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234 |
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235 #if !defined STRFTIME_BUF_INITIAL_SIZE |
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236 #define STRFTIME_BUF_INITIAL_SIZE 128 |
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237 #endif |
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238 |
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239 std::string |
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240 octave_base_tm::strftime (const std::string& fmt) const |
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241 { |
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242 std::string retval; |
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243 |
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244 if (! fmt.empty ()) |
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245 { |
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246 struct tm t; |
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247 |
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248 t.tm_sec = tm_sec; |
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249 t.tm_min = tm_min; |
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250 t.tm_hour = tm_hour; |
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251 t.tm_mday = tm_mday; |
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252 t.tm_mon = tm_mon; |
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253 t.tm_year = tm_year; |
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254 t.tm_wday = tm_wday; |
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255 t.tm_yday = tm_yday; |
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256 t.tm_isdst = tm_isdst; |
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257 |
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258 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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259 char *ps = strsave (tm_zone.c_str ()); |
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260 t.tm_zone = ps; |
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261 #endif |
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262 |
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263 const char *fmt_str = fmt.c_str (); |
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264 |
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265 char *buf = 0; |
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266 size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; |
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267 size_t chars_written = 0; |
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268 |
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269 while (chars_written == 0) |
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270 { |
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271 delete [] buf; |
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272 buf = new char[bufsize]; |
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273 buf[0] = '\0'; |
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274 |
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275 chars_written = ::strftime (buf, bufsize, fmt_str, &t); |
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276 |
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277 bufsize *= 2; |
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278 } |
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279 |
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280 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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281 delete [] ps; |
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282 #endif |
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283 |
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284 retval = buf; |
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285 |
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286 delete [] buf; |
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287 } |
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288 |
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289 return retval; |
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290 } |
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291 |
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292 void |
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293 octave_base_tm::init (void *p) |
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294 { |
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295 struct tm *t = static_cast<struct tm*> (p); |
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296 |
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297 tm_sec = t->tm_sec; |
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298 tm_min = t->tm_min; |
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299 tm_hour = t->tm_hour; |
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300 tm_mday = t->tm_mday; |
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301 tm_mon = t->tm_mon; |
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302 tm_year = t->tm_year; |
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303 tm_wday = t->tm_wday; |
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304 tm_yday = t->tm_yday; |
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305 tm_isdst = t->tm_isdst; |
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306 |
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307 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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308 tm_zone = t->tm_zone; |
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309 #elif defined (HAVE_TZNAME) |
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310 if (t->tm_isdst == 0 || t->tm_isdst == 1) |
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311 tm_zone = tzname[t->tm_isdst]; |
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312 #endif |
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313 } |
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314 |
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315 void |
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316 octave_localtime::init (const octave_time& ot) |
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317 { |
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318 tm_usec = ot.usec (); |
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319 |
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320 time_t t = ot; |
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321 |
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322 octave_base_tm::init (localtime (&t)); |
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323 } |
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324 |
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325 void |
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326 octave_gmtime::init (const octave_time& ot) |
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327 { |
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328 tm_usec = ot.usec (); |
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329 |
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330 time_t t = ot; |
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331 |
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332 octave_base_tm::init (gmtime (&t)); |
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333 } |
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334 |
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335 void |
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336 octave_strptime::init (const std::string& str, const std::string& fmt) |
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337 { |
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338 struct tm t; |
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339 |
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340 t.tm_sec = 0; |
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341 t.tm_min = 0; |
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342 t.tm_hour = 0; |
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343 t.tm_mday = 0; |
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344 t.tm_mon = 0; |
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345 t.tm_year = 0; |
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346 t.tm_wday = 0; |
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347 t.tm_yday = 0; |
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348 t.tm_isdst = 0; |
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349 |
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350 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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351 char *ps = strsave (""); |
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352 t.tm_zone = ps; |
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353 #endif |
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354 |
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355 char *p = strsave (str.c_str ()); |
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356 |
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357 char *q = oct_strptime (p, fmt.c_str (), &t); |
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358 |
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359 // Fill in wday and yday. |
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360 t.tm_isdst = -1; |
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361 mktime (&t); |
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362 |
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363 if (q) |
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364 nchars = q - p + 1; |
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365 else |
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366 nchars = 0; |
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367 |
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368 delete [] p; |
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369 |
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370 octave_base_tm::init (&t); |
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371 |
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372 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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373 delete ps; |
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374 #endif |
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375 } |
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376 |
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377 /* |
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378 ;;; Local Variables: *** |
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379 ;;; mode: C++ *** |
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380 ;;; End: *** |
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381 */ |
