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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 // I am told that without _BSD_SOURCE, tm_zone won't be declared on |
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28 // some systems. Defining _XOPEN_SOURCE provides the declaration for |
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29 // strptime on some others. |
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30 // |
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31 // These defines go here, before any system header files are included, |
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32 // because the system header files may define other macros that are |
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33 // actually used to determine the feature set. If we wait until after |
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34 // some system header file is included, it may be too late. |
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35 |
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36 #if !defined (_BSD_SOURCE) |
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37 #define _BSD_SOURCE 1 |
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38 #define OCTAVE_UNDEFINE_BSD_SOURCE |
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39 #endif |
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40 |
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41 #if !defined (_XOPEN_SOURCE) |
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42 #define _XOPEN_SOURCE 1 |
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43 #define OCTAVE_UNDEFINE_XOPEN_SOURCE |
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44 #endif |
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45 |
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46 #include <climits> |
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47 #include <cmath> |
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48 |
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49 #include "lo-error.h" |
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50 #include "lo-utils.h" |
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51 #include "oct-time.h" |
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52 |
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53 #if defined (OCTAVE_UNDEFINE_BSD_SOURCE) |
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54 #undef _BSD_SOURCE |
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55 #endif |
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56 |
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57 #if defined (OCTAVE_UNDEFINE_XOPEN_SOURCE) |
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58 #undef _XOPEN_SOURCE |
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59 #endif |
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60 |
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61 #if !defined (HAVE_STRPTIME) |
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62 extern "C" char *strptime (const char *buf, const char *format, struct tm *tm); |
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63 #endif |
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64 |
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65 octave_time::octave_time (const octave_base_tm& tm) |
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66 { |
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67 struct tm t; |
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68 |
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69 t.tm_sec = tm.sec (); |
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70 t.tm_min = tm.min (); |
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71 t.tm_hour = tm.hour (); |
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72 t.tm_mday = tm.mday (); |
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73 t.tm_mon = tm.mon (); |
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74 t.tm_year = tm.year (); |
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75 t.tm_wday = tm.wday (); |
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76 t.tm_yday = tm.yday (); |
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77 t.tm_isdst = tm.isdst (); |
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78 |
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79 #if defined (HAVE_TM_ZONE) |
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80 std::string s = tm.zone (); |
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81 char *ps = strsave (s.c_str ()); |
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82 t.tm_zone = ps; |
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83 #endif |
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84 |
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85 ot_unix_time = mktime (&t); |
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86 |
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87 #if defined (HAVE_TM_ZONE) |
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88 delete [] ps; |
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89 #endif |
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90 |
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91 ot_usec = tm.usec (); |
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92 } |
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93 |
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94 std::string |
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95 octave_time::ctime (void) const |
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96 { |
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97 return octave_localtime (*this) . asctime (); |
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98 } |
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99 |
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100 void |
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101 octave_time::stamp (void) |
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102 { |
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103 #if defined (HAVE_GETTIMEOFDAY) |
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104 |
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105 struct timeval tp; |
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106 |
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107 #if defined (GETTIMEOFDAY_NO_TZ) |
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108 gettimeofday (&tp); |
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109 #else |
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110 gettimeofday (&tp, 0); |
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111 #endif |
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112 |
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113 ot_unix_time = tp.tv_sec; |
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114 |
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115 ot_usec = tp.tv_usec; |
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116 |
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117 #else |
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118 |
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119 ot_unix_time = time (0); |
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120 |
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121 #endif |
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122 } |
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123 |
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124 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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125 octave_base_tm& \ |
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126 octave_base_tm::f (int v) \ |
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127 { \ |
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128 if (v < lo || v > hi) \ |
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129 (*current_liboctave_error_handler) \ |
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130 ("invalid value specified for " #f); \ |
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131 \ |
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132 tm_ ## f = v; \ |
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133 \ |
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134 return *this; \ |
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135 } |
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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 struct tm t; |
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165 |
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166 t.tm_sec = tm_sec; |
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167 t.tm_min = tm_min; |
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168 t.tm_hour = tm_hour; |
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169 t.tm_mday = tm_mday; |
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170 t.tm_mon = tm_mon; |
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171 t.tm_year = tm_year; |
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172 t.tm_wday = tm_wday; |
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173 t.tm_yday = tm_yday; |
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174 t.tm_isdst = tm_isdst; |
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175 |
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176 #if defined (HAVE_TM_ZONE) |
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177 char *ps = strsave (tm_zone.c_str ()); |
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178 t.tm_zone = ps; |
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179 #endif |
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180 |
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181 const char *fmt_str = fmt.c_str (); |
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182 |
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183 char *buf = 0; |
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184 size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; |
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185 size_t chars_written = 0; |
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186 |
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187 while (chars_written == 0) |
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188 { |
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189 delete [] buf; |
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190 buf = new char[bufsize]; |
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191 buf[0] = '\0'; |
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192 |
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193 chars_written = ::strftime (buf, bufsize, fmt_str, &t); |
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194 |
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195 bufsize *= 2; |
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196 } |
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197 |
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198 #if defined (HAVE_TM_ZONE) |
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199 delete [] ps; |
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200 #endif |
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201 |
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202 retval = buf; |
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203 |
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204 delete [] buf; |
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205 |
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206 return retval; |
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207 } |
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208 |
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209 void |
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210 octave_base_tm::init (void *p) |
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211 { |
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212 struct tm *t = static_cast<struct tm*> (p); |
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213 |
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214 tm_sec = t->tm_sec; |
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215 tm_min = t->tm_min; |
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216 tm_hour = t->tm_hour; |
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217 tm_mday = t->tm_mday; |
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218 tm_mon = t->tm_mon; |
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219 tm_year = t->tm_year; |
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220 tm_wday = t->tm_wday; |
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221 tm_yday = t->tm_yday; |
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222 tm_isdst = t->tm_isdst; |
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223 |
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224 #if defined (HAVE_TM_ZONE) |
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225 tm_zone = t->tm_zone; |
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226 #elif defined (HAVE_TZNAME) |
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227 if (t->tm_isdst == 0 || t->tm_isdst == 1) |
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228 tm_zone = tzname[t->tm_isdst]; |
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229 #endif |
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230 } |
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231 |
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232 void |
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233 octave_localtime::init (const octave_time& ot) |
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234 { |
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235 tm_usec = ot.usec (); |
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236 |
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237 time_t t = ot; |
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238 |
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239 octave_base_tm::init (localtime (&t)); |
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240 } |
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241 |
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242 void |
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243 octave_gmtime::init (const octave_time& ot) |
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244 { |
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245 tm_usec = ot.usec (); |
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246 |
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247 time_t t = ot; |
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248 |
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249 octave_base_tm::init (gmtime (&t)); |
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250 } |
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251 |
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252 void |
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253 octave_strptime::init (const std::string& str, const std::string& fmt) |
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254 { |
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255 struct tm t; |
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256 |
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257 t.tm_sec = 0; |
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258 t.tm_min = 0; |
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259 t.tm_hour = 0; |
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260 t.tm_mday = 0; |
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261 t.tm_mon = 0; |
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262 t.tm_year = 0; |
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263 t.tm_wday = 0; |
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264 t.tm_yday = 0; |
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265 t.tm_isdst = 0; |
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266 |
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267 #if defined (HAVE_TM_ZONE) |
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268 char *ps = strsave (""); |
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269 t.tm_zone = ps; |
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270 #endif |
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271 |
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272 char *p = strsave (str.c_str ()); |
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273 |
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274 char *q = strptime (p, fmt.c_str (), &t); |
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275 |
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276 nchars = p - q; |
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277 |
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278 delete [] p; |
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279 |
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280 octave_base_tm::init (&t); |
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281 |
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282 #if defined (HAVE_TM_ZONE) |
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283 delete ps; |
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284 #endif |
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285 } |
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286 |
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287 /* |
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288 ;;; Local Variables: *** |
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289 ;;; mode: C++ *** |
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290 ;;; End: *** |
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291 */ |
