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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 #ifdef HAVE_UNISTD_H |
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31 #ifdef HAVE_SYS_TYPES_H |
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32 #include <sys/types.h> |
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33 #endif |
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34 #include <unistd.h> |
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35 #endif |
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36 |
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37 #include "lo-error.h" |
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38 #include "lo-utils.h" |
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39 #include "oct-time.h" |
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40 |
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41 octave_time::octave_time (const octave_base_tm& tm) |
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42 { |
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43 struct tm t; |
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44 |
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45 t.tm_sec = tm.sec (); |
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46 t.tm_min = tm.min (); |
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47 t.tm_hour = tm.hour (); |
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48 t.tm_mday = tm.mday (); |
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49 t.tm_mon = tm.mon (); |
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50 t.tm_year = tm.year (); |
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51 t.tm_wday = tm.wday (); |
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52 t.tm_yday = tm.yday (); |
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53 t.tm_isdst = tm.isdst (); |
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54 |
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55 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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56 std::string s = tm.zone (); |
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57 char *ps = strsave (s.c_str ()); |
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58 t.tm_zone = ps; |
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59 #endif |
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60 |
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61 ot_unix_time = mktime (&t); |
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62 |
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63 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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64 delete [] ps; |
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65 #endif |
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66 |
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67 ot_usec = tm.usec (); |
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68 } |
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69 |
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70 std::string |
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71 octave_time::ctime (void) const |
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72 { |
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73 return octave_localtime (*this) . asctime (); |
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74 } |
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75 |
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76 void |
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77 octave_time::stamp (void) |
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78 { |
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79 #if defined (HAVE_GETTIMEOFDAY) |
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80 |
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81 struct timeval tp; |
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82 |
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83 #if defined (GETTIMEOFDAY_NO_TZ) |
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84 gettimeofday (&tp); |
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85 #else |
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86 gettimeofday (&tp, 0); |
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87 #endif |
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88 |
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89 ot_unix_time = tp.tv_sec; |
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90 |
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91 ot_usec = tp.tv_usec; |
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92 |
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93 #else |
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94 |
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95 ot_unix_time = time (0); |
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96 |
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97 #endif |
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98 } |
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99 |
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100 // From the mktime() manual page: |
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101 // |
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102 // The mktime() function converts a broken-down time structure, |
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103 // expressed as local time, to calendar time representation. |
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104 // |
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105 // <snip> |
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106 // |
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107 // If structure members are outside their legal interval, they |
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108 // will be normalized (so that, e.g., 40 October is changed into |
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109 // 9 November). |
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110 // |
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111 // So, we no longer check limits here. |
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112 |
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113 #if 0 |
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114 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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115 octave_base_tm& \ |
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116 octave_base_tm::f (int v) \ |
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117 { \ |
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118 if (v < lo || v > hi) \ |
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119 (*current_liboctave_error_handler) \ |
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120 ("invalid value specified for " #f); \ |
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121 \ |
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122 tm_ ## f = v; \ |
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123 \ |
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124 return *this; \ |
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125 } |
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126 #else |
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127 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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128 octave_base_tm& \ |
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129 octave_base_tm::f (int v) \ |
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130 { \ |
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131 tm_ ## f = v; \ |
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132 \ |
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133 return *this; \ |
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134 } |
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135 #endif |
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136 |
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137 DEFINE_SET_INT_FIELD_FCN (usec, 0, 1000000) |
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138 DEFINE_SET_INT_FIELD_FCN (sec, 0, 61) |
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139 DEFINE_SET_INT_FIELD_FCN (min, 0, 59) |
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140 DEFINE_SET_INT_FIELD_FCN (hour, 0, 23) |
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141 DEFINE_SET_INT_FIELD_FCN (mday, 1, 31) |
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142 DEFINE_SET_INT_FIELD_FCN (mon, 0, 11) |
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143 DEFINE_SET_INT_FIELD_FCN (year, INT_MIN, INT_MAX) |
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144 DEFINE_SET_INT_FIELD_FCN (wday, 0, 6) |
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145 DEFINE_SET_INT_FIELD_FCN (yday, 0, 365) |
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146 DEFINE_SET_INT_FIELD_FCN (isdst, 0, 1) |
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147 |
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148 octave_base_tm& |
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149 octave_base_tm::zone (const std::string& s) |
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150 { |
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151 tm_zone = s; |
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152 return *this; |
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153 } |
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154 |
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155 #if !defined STRFTIME_BUF_INITIAL_SIZE |
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156 #define STRFTIME_BUF_INITIAL_SIZE 128 |
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157 #endif |
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158 |
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159 std::string |
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160 octave_base_tm::strftime (const std::string& fmt) const |
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161 { |
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162 std::string retval; |
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163 |
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164 if (! fmt.empty ()) |
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165 { |
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166 struct tm t; |
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167 |
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168 t.tm_sec = tm_sec; |
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169 t.tm_min = tm_min; |
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170 t.tm_hour = tm_hour; |
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171 t.tm_mday = tm_mday; |
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172 t.tm_mon = tm_mon; |
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173 t.tm_year = tm_year; |
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174 t.tm_wday = tm_wday; |
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175 t.tm_yday = tm_yday; |
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176 t.tm_isdst = tm_isdst; |
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177 |
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178 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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179 char *ps = strsave (tm_zone.c_str ()); |
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180 t.tm_zone = ps; |
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181 #endif |
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182 |
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183 const char *fmt_str = fmt.c_str (); |
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184 |
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185 char *buf = 0; |
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186 size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; |
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187 size_t chars_written = 0; |
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188 |
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189 while (chars_written == 0) |
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190 { |
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191 delete [] buf; |
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192 buf = new char[bufsize]; |
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193 buf[0] = '\0'; |
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194 |
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195 chars_written = ::strftime (buf, bufsize, fmt_str, &t); |
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196 |
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197 bufsize *= 2; |
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198 } |
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199 |
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200 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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201 delete [] ps; |
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202 #endif |
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203 |
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204 retval = buf; |
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205 |
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206 delete [] buf; |
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207 } |
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208 |
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209 return retval; |
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210 } |
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211 |
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212 void |
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213 octave_base_tm::init (void *p) |
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214 { |
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215 struct tm *t = static_cast<struct tm*> (p); |
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216 |
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217 tm_sec = t->tm_sec; |
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218 tm_min = t->tm_min; |
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219 tm_hour = t->tm_hour; |
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220 tm_mday = t->tm_mday; |
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221 tm_mon = t->tm_mon; |
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222 tm_year = t->tm_year; |
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223 tm_wday = t->tm_wday; |
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224 tm_yday = t->tm_yday; |
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225 tm_isdst = t->tm_isdst; |
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226 |
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227 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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228 tm_zone = t->tm_zone; |
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229 #elif defined (HAVE_TZNAME) |
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230 if (t->tm_isdst == 0 || t->tm_isdst == 1) |
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231 tm_zone = tzname[t->tm_isdst]; |
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232 #endif |
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233 } |
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234 |
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235 void |
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236 octave_localtime::init (const octave_time& ot) |
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237 { |
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238 tm_usec = ot.usec (); |
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239 |
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240 time_t t = ot; |
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241 |
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242 octave_base_tm::init (localtime (&t)); |
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243 } |
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244 |
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245 void |
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246 octave_gmtime::init (const octave_time& ot) |
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247 { |
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248 tm_usec = ot.usec (); |
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249 |
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250 time_t t = ot; |
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251 |
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252 octave_base_tm::init (gmtime (&t)); |
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253 } |
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254 |
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255 void |
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256 octave_strptime::init (const std::string& str, const std::string& fmt) |
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257 { |
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258 struct tm t; |
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259 |
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260 t.tm_sec = 0; |
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261 t.tm_min = 0; |
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262 t.tm_hour = 0; |
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263 t.tm_mday = 0; |
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264 t.tm_mon = 0; |
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265 t.tm_year = 0; |
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266 t.tm_wday = 0; |
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267 t.tm_yday = 0; |
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268 t.tm_isdst = 0; |
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269 |
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270 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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271 char *ps = strsave (""); |
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272 t.tm_zone = ps; |
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273 #endif |
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274 |
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275 char *p = strsave (str.c_str ()); |
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276 |
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277 char *q = oct_strptime (p, fmt.c_str (), &t); |
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278 |
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279 nchars = p - q; |
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280 |
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281 delete [] p; |
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282 |
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283 octave_base_tm::init (&t); |
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284 |
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285 #if defined (HAVE_STRUCT_TM_TM_ZONE) |
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286 delete ps; |
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287 #endif |
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288 } |
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289 |
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290 /* |
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291 ;;; Local Variables: *** |
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292 ;;; mode: C++ *** |
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293 ;;; End: *** |
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294 */ |
