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unixtime.inc

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1
2 /*
3 Unix Time Conversion
4 by bugsy
5 v0.3
6
7 http://forums.alliedmods.net/showthread.php?t=91915
8
9 TimeZone data: http://www.epochconverter.com/epoch/timezones.php
10 */
11
12 #if defined _file_unixtime_included
13 #endinput
14 #endif
15 #define _file_unixtime_included
16
17 stock const YearSeconds[2] =
18 {
19 31536000, //Normal year
20 31622400 //Leap year
21 };
22
23 stock const MonthSeconds[12] =
24 {
25 2678400, //January 31
26 2419200, //February 28
27 2678400, //March 31
28 2592000, //April 30
29 2678400, //May 31
30 2592000, //June 30
31 2678400, //July 31
32 2678400, //August 31
33 2592000, //September 30
34 2678400, //October 31
35 2592000, //November 30
36 2678400 //December 31
37 };
38
39 enum TimeZones
40 {
41 UT_TIMEZONE_SERVER,
42 UT_TIMEZONE_MIT,
43 UT_TIMEZONE_HAST,
44 UT_TIMEZONE_AKST,
45 UT_TIMEZONE_AKDT,
46 UT_TIMEZONE_PST,
47 UT_TIMEZONE_PDT,
48 UT_TIMEZONE_MST,
49 UT_TIMEZONE_MDT,
50 UT_TIMEZONE_CST,
51 UT_TIMEZONE_CDT,
52 UT_TIMEZONE_EST,
53 UT_TIMEZONE_EDT,
54 UT_TIMEZONE_PRT,
55 UT_TIMEZONE_CNT,
56 UT_TIMEZONE_AGT,
57 UT_TIMEZONE_BET,
58 UT_TIMEZONE_CAT,
59 UT_TIMEZONE_UTC,
60 UT_TIMEZONE_WET,
61 UT_TIMEZONE_WEST,
62 UT_TIMEZONE_CET,
63 UT_TIMEZONE_CEST,
64 UT_TIMEZONE_EET,
65 UT_TIMEZONE_EEST,
66 UT_TIMEZONE_ART,
67 UT_TIMEZONE_EAT,
68 UT_TIMEZONE_MET,
69 UT_TIMEZONE_NET,
70 UT_TIMEZONE_PLT,
71 UT_TIMEZONE_IST,
72 UT_TIMEZONE_BST,
73 UT_TIMEZONE_ICT,
74 UT_TIMEZONE_CTT,
75 UT_TIMEZONE_AWST,
76 UT_TIMEZONE_JST,
77 UT_TIMEZONE_ACST,
78 UT_TIMEZONE_AEST,
79 UT_TIMEZONE_SST,
80 UT_TIMEZONE_NZST,
81 UT_TIMEZONE_NZDT
82 }
83
84 stock const TimeZoneOffset[ TimeZones ] =
85 {
86 -1,
87 -39600,
88 -36000,
89 -32400,
90 -28800,
91 -28800,
92 -25200,
93 -25200,
94 -21600,
95 -21600,
96 -18000,
97 -18000,
98 -14400,
99 -14400,
100 -12600,
101 -10800,
102 -10800,
103 -3600,
104 0,
105 0,
106 3600,
107 3600,
108 7200,
109 7200,
110 10800,
111 7200,
112 10800,
113 12600,
114 14400,
115 18000,
116 19800,
117 21600,
118 25200,
119 28800,
120 28800,
121 32400,
122 34200,
123 36000,
124 39600,
125 43200,
126 46800
127 };
128
129 stock TimeZones:TimeZone;
130 stock const DaySeconds = 86400;
131 stock const HourSeconds = 3600;
132 stock const MinuteSeconds = 60;
133
134 stock UnixToTime( iTimeStamp , &iYear , &iMonth , &iDay , &iHour , &iMinute , &iSecond , TimeZones:tzTimeZone=UT_TIMEZONE_UTC )
135 {
136 new iTemp;
137
138 iYear = 1970;
139 iMonth = 1;
140 iDay = 1;
141 iHour = 0;
142
143 if ( tzTimeZone == UT_TIMEZONE_SERVER )
144 tzTimeZone = GetTimeZone();
145
146 iTimeStamp += TimeZoneOffset[ tzTimeZone ];
147
148 while ( iTimeStamp > 0 )
149 {
150 iTemp = IsLeapYear(iYear);
151
152 if ( ( iTimeStamp - YearSeconds[iTemp] ) >= 0 )
153 {
154 iTimeStamp -= YearSeconds[iTemp];
155 iYear++;
156 }
157 else
158 {
159 break;
160 }
161 }
162
163 while ( iTimeStamp > 0 )
164 {
165 iTemp = SecondsInMonth( iYear , iMonth );
166
167 if ( ( iTimeStamp - iTemp ) >= 0 )
168 {
169 iTimeStamp -= iTemp;
170 iMonth++;
171 }
172 else
173 {
174 break;
175 }
176 }
177
178 while ( iTimeStamp > 0)
179 {
180 if ( ( iTimeStamp - DaySeconds ) >= 0 )
181 {
182 iTimeStamp -= DaySeconds;
183 iDay++;
184 }
185 else
186 {
187 break;
188 }
189 }
190
191 while ( iTimeStamp > 0 )
192 {
193 if ( ( iTimeStamp - HourSeconds ) >= 0 )
194 {
195 iTimeStamp -= HourSeconds;
196 iHour++;
197 }
198 else
199 {
200 break;
201 }
202 }
203
204 iMinute = ( iTimeStamp / 60 );
205 iSecond = ( iTimeStamp % 60 );
206 }
207
208 stock TimeToUnix( const iYear , const iMonth , const iDay , const iHour , const iMinute , const iSecond , TimeZones:tzTimeZone=UT_TIMEZONE_UTC)
209 {
210 new i , iTimeStamp;
211
212 for ( i = 1970 ; i < iYear ; i++ )
213 iTimeStamp += YearSeconds[ IsLeapYear(i) ];
214
215 for ( i = 1 ; i < iMonth ; i++ )
216 iTimeStamp += SecondsInMonth( iYear , i );
217
218 iTimeStamp += ( ( iDay - 1 ) * DaySeconds );
219 iTimeStamp += ( iHour * HourSeconds );
220 iTimeStamp += ( iMinute * MinuteSeconds );
221 iTimeStamp += iSecond;
222
223 if ( tzTimeZone == UT_TIMEZONE_SERVER )
224 tzTimeZone = GetTimeZone();
225
226 return ( iTimeStamp + TimeZoneOffset[ tzTimeZone ] );
227 }
228
229 stock TimeZones:GetTimeZone()
230 {
231 if ( TimeZone )
232 return TimeZone;
233
234 new TimeZones:iZone , iOffset , iTime , iYear , iMonth , iDay , iHour , iMinute , iSecond;
235 date( iYear , iMonth , iDay );
236 time( iHour , iMinute , iSecond );
237
238 iTime = TimeToUnix( iYear , iMonth , iDay , iHour , iMinute , iSecond , UT_TIMEZONE_UTC );
239 iOffset = iTime - get_systime();
240
241 for ( iZone = TimeZones:0 ; iZone < TimeZones ; iZone++ )
242 {
243 if ( iOffset == TimeZoneOffset[ iZone ] )
244 break;
245 }
246
247 return ( TimeZone = iZone );
248 }
249
250 stock SecondsInMonth( const iYear , const iMonth )
251 {
252 return ( ( IsLeapYear( iYear ) && ( iMonth == 2 ) ) ? ( MonthSeconds[iMonth - 1] + DaySeconds ) : MonthSeconds[iMonth - 1] );
253 }
254
255 stock IsLeapYear( const iYear )
256 {
257 return ( ( (iYear % 4) == 0) && ( ( (iYear % 100) != 0) || ( (iYear % 400) == 0 ) ) );
258 }
259