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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 #if 0 |
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28 |
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29 // The following definitions are commented out because they cause |
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30 // trouble on some systems. What is really needed is a feature test |
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31 // in the configure script. |
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32 |
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33 // I am told that without _BSD_SOURCE, tm_zone won't be declared on |
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34 // some systems. Defining _XOPEN_SOURCE provides the declaration for |
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35 // strptime on some others. |
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36 // |
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37 // These defines go here, before any system header files are included, |
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38 // because the system header files may define other macros that are |
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39 // actually used to determine the feature set. If we wait until after |
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40 // some system header file is included, it may be too late. |
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41 |
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42 #if !defined (_BSD_SOURCE) |
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43 #define _BSD_SOURCE 1 |
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44 #define OCTAVE_UNDEFINE_BSD_SOURCE |
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45 #endif |
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46 |
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47 #if !defined (_XOPEN_SOURCE) |
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48 #define _XOPEN_SOURCE 1 |
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49 #define OCTAVE_UNDEFINE_XOPEN_SOURCE |
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50 #endif |
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51 |
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52 #endif |
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53 |
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54 #include <climits> |
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55 #include <cmath> |
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56 |
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57 #ifdef HAVE_UNISTD_H |
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58 #ifdef HAVE_SYS_TYPES_H |
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59 #include <sys/types.h> |
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60 #endif |
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61 #include <unistd.h> |
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62 #endif |
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63 |
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64 #include "lo-error.h" |
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65 #include "lo-utils.h" |
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66 #include "oct-time.h" |
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67 |
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68 #if defined (OCTAVE_UNDEFINE_BSD_SOURCE) |
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69 #undef _BSD_SOURCE |
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70 #endif |
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71 |
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72 #if defined (OCTAVE_UNDEFINE_XOPEN_SOURCE) |
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73 #undef _XOPEN_SOURCE |
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74 #endif |
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75 |
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76 #if !defined (HAVE_STRPTIME) |
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77 extern "C" char *strptime (const char *buf, const char *format, struct tm *tm); |
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78 #endif |
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79 |
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80 octave_time::octave_time (const octave_base_tm& tm) |
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81 { |
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82 struct tm t; |
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83 |
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84 t.tm_sec = tm.sec (); |
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85 t.tm_min = tm.min (); |
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86 t.tm_hour = tm.hour (); |
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87 t.tm_mday = tm.mday (); |
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88 t.tm_mon = tm.mon (); |
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89 t.tm_year = tm.year (); |
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90 t.tm_wday = tm.wday (); |
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91 t.tm_yday = tm.yday (); |
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92 t.tm_isdst = tm.isdst (); |
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93 |
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94 #if defined (HAVE_TM_ZONE) |
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95 std::string s = tm.zone (); |
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96 char *ps = strsave (s.c_str ()); |
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97 t.tm_zone = ps; |
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98 #endif |
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99 |
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100 ot_unix_time = mktime (&t); |
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101 |
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102 #if defined (HAVE_TM_ZONE) |
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103 delete [] ps; |
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104 #endif |
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105 |
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106 ot_usec = tm.usec (); |
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107 } |
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108 |
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109 std::string |
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110 octave_time::ctime (void) const |
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111 { |
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112 return octave_localtime (*this) . asctime (); |
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113 } |
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114 |
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115 void |
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116 octave_time::stamp (void) |
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117 { |
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118 #if defined (HAVE_GETTIMEOFDAY) |
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119 |
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120 struct timeval tp; |
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121 |
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122 #if defined (GETTIMEOFDAY_NO_TZ) |
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123 gettimeofday (&tp); |
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124 #else |
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125 gettimeofday (&tp, 0); |
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126 #endif |
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127 |
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128 ot_unix_time = tp.tv_sec; |
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129 |
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130 ot_usec = tp.tv_usec; |
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131 |
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132 #else |
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133 |
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134 ot_unix_time = time (0); |
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135 |
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136 #endif |
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137 } |
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138 |
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139 #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ |
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140 octave_base_tm& \ |
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141 octave_base_tm::f (int v) \ |
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142 { \ |
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143 if (v < lo || v > hi) \ |
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144 (*current_liboctave_error_handler) \ |
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145 ("invalid value specified for " #f); \ |
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146 \ |
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147 tm_ ## f = v; \ |
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148 \ |
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149 return *this; \ |
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150 } |
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151 |
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152 DEFINE_SET_INT_FIELD_FCN (usec, 0, 1000000) |
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153 DEFINE_SET_INT_FIELD_FCN (sec, 0, 61) |
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154 DEFINE_SET_INT_FIELD_FCN (min, 0, 59) |
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155 DEFINE_SET_INT_FIELD_FCN (hour, 0, 23) |
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156 DEFINE_SET_INT_FIELD_FCN (mday, 1, 31) |
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157 DEFINE_SET_INT_FIELD_FCN (mon, 0, 11) |
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158 DEFINE_SET_INT_FIELD_FCN (year, INT_MIN, INT_MAX) |
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159 DEFINE_SET_INT_FIELD_FCN (wday, 0, 6) |
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160 DEFINE_SET_INT_FIELD_FCN (yday, 0, 365) |
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161 DEFINE_SET_INT_FIELD_FCN (isdst, 0, 1) |
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162 |
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163 octave_base_tm& |
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164 octave_base_tm::zone (const std::string& s) |
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165 { |
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166 tm_zone = s; |
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167 return *this; |
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168 } |
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169 |
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170 #if !defined STRFTIME_BUF_INITIAL_SIZE |
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171 #define STRFTIME_BUF_INITIAL_SIZE 128 |
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172 #endif |
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173 |
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174 std::string |
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175 octave_base_tm::strftime (const std::string& fmt) const |
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176 { |
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177 std::string retval; |
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178 |
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179 struct tm t; |
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180 |
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181 t.tm_sec = tm_sec; |
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182 t.tm_min = tm_min; |
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183 t.tm_hour = tm_hour; |
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184 t.tm_mday = tm_mday; |
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185 t.tm_mon = tm_mon; |
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186 t.tm_year = tm_year; |
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187 t.tm_wday = tm_wday; |
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188 t.tm_yday = tm_yday; |
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189 t.tm_isdst = tm_isdst; |
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190 |
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191 #if defined (HAVE_TM_ZONE) |
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192 char *ps = strsave (tm_zone.c_str ()); |
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193 t.tm_zone = ps; |
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194 #endif |
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195 |
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196 const char *fmt_str = fmt.c_str (); |
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197 |
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198 char *buf = 0; |
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199 size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; |
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200 size_t chars_written = 0; |
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201 |
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202 while (chars_written == 0) |
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203 { |
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204 delete [] buf; |
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205 buf = new char[bufsize]; |
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206 buf[0] = '\0'; |
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207 |
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208 chars_written = ::strftime (buf, bufsize, fmt_str, &t); |
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209 |
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210 bufsize *= 2; |
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211 } |
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212 |
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213 #if defined (HAVE_TM_ZONE) |
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214 delete [] ps; |
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215 #endif |
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216 |
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217 retval = buf; |
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218 |
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219 delete [] buf; |
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220 |
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221 return retval; |
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222 } |
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223 |
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224 void |
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225 octave_base_tm::init (void *p) |
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226 { |
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227 struct tm *t = static_cast<struct tm*> (p); |
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228 |
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229 tm_sec = t->tm_sec; |
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230 tm_min = t->tm_min; |
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231 tm_hour = t->tm_hour; |
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232 tm_mday = t->tm_mday; |
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233 tm_mon = t->tm_mon; |
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234 tm_year = t->tm_year; |
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235 tm_wday = t->tm_wday; |
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236 tm_yday = t->tm_yday; |
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237 tm_isdst = t->tm_isdst; |
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238 |
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239 #if defined (HAVE_TM_ZONE) |
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240 tm_zone = t->tm_zone; |
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241 #elif defined (HAVE_TZNAME) |
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242 if (t->tm_isdst == 0 || t->tm_isdst == 1) |
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243 tm_zone = tzname[t->tm_isdst]; |
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244 #endif |
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245 } |
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246 |
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247 void |
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248 octave_localtime::init (const octave_time& ot) |
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249 { |
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250 tm_usec = ot.usec (); |
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251 |
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252 time_t t = ot; |
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253 |
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254 octave_base_tm::init (localtime (&t)); |
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255 } |
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256 |
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257 void |
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258 octave_gmtime::init (const octave_time& ot) |
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259 { |
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260 tm_usec = ot.usec (); |
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261 |
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262 time_t t = ot; |
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263 |
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264 octave_base_tm::init (gmtime (&t)); |
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265 } |
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266 |
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267 void |
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268 octave_strptime::init (const std::string& str, const std::string& fmt) |
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269 { |
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270 struct tm t; |
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271 |
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272 t.tm_sec = 0; |
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273 t.tm_min = 0; |
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274 t.tm_hour = 0; |
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275 t.tm_mday = 0; |
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276 t.tm_mon = 0; |
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277 t.tm_year = 0; |
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278 t.tm_wday = 0; |
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279 t.tm_yday = 0; |
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280 t.tm_isdst = 0; |
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281 |
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282 #if defined (HAVE_TM_ZONE) |
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283 char *ps = strsave (""); |
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284 t.tm_zone = ps; |
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285 #endif |
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286 |
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287 char *p = strsave (str.c_str ()); |
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288 |
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289 char *q = strptime (p, fmt.c_str (), &t); |
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290 |
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291 nchars = p - q; |
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292 |
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293 delete [] p; |
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294 |
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295 octave_base_tm::init (&t); |
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296 |
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297 #if defined (HAVE_TM_ZONE) |
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298 delete ps; |
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299 #endif |
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300 } |
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301 |
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302 /* |
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303 ;;; Local Variables: *** |
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304 ;;; mode: C++ *** |
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305 ;;; End: *** |
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306 */ |
