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PHP Cross Reference of phpwcms V1.4.7 _r403 (01.11.10) |
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1 // =================================================================== 2 // Author: Matt Kruse <matt@mattkruse.com> 3 // WWW: http://www.mattkruse.com/ 4 // 5 // NOTICE: You may use this code for any purpose, commercial or 6 // private, without any further permission from the author. You may 7 // remove this notice from your final code if you wish, however it is 8 // appreciated by the author if at least my web site address is kept. 9 // 10 // You may *NOT* re-distribute this code in any way except through its 11 // use. That means, you can include it in your product, or your web 12 // site, or any other form where the code is actually being used. You 13 // may not put the plain javascript up on your site for download or 14 // include it in your javascript libraries for download. 15 // If you wish to share this code with others, please just point them 16 // to the URL instead. 17 // Please DO NOT link directly to my .js files from your site. Copy 18 // the files to your server and use them there. Thank you. 19 // =================================================================== 20 21 // HISTORY 22 // ------------------------------------------------------------------ 23 // May 17, 2003: Fixed bug in parseDate() for dates <1970 24 // March 11, 2003: Added parseDate() function 25 // March 11, 2003: Added "NNN" formatting option. Doesn't match up 26 // perfectly with SimpleDateFormat formats, but 27 // backwards-compatability was required. 28 29 // ------------------------------------------------------------------ 30 // These functions use the same 'format' strings as the 31 // java.text.SimpleDateFormat class, with minor exceptions. 32 // The format string consists of the following abbreviations: 33 // 34 // Field | Full Form | Short Form 35 // -------------+--------------------+----------------------- 36 // Year | yyyy (4 digits) | yy (2 digits), y (2 or 4 digits) 37 // Month | MMM (name or abbr.)| MM (2 digits), M (1 or 2 digits) 38 // | NNN (abbr.) | 39 // Day of Month | dd (2 digits) | d (1 or 2 digits) 40 // Day of Week | EE (name) | E (abbr) 41 // Hour (1-12) | hh (2 digits) | h (1 or 2 digits) 42 // Hour (0-23) | HH (2 digits) | H (1 or 2 digits) 43 // Hour (0-11) | KK (2 digits) | K (1 or 2 digits) 44 // Hour (1-24) | kk (2 digits) | k (1 or 2 digits) 45 // Minute | mm (2 digits) | m (1 or 2 digits) 46 // Second | ss (2 digits) | s (1 or 2 digits) 47 // AM/PM | a | 48 // 49 // NOTE THE DIFFERENCE BETWEEN MM and mm! Month=MM, not mm! 50 // Examples: 51 // "MMM d, y" matches: January 01, 2000 52 // Dec 1, 1900 53 // Nov 20, 00 54 // "M/d/yy" matches: 01/20/00 55 // 9/2/00 56 // "MMM dd, yyyy hh:mm:ssa" matches: "January 01, 2000 12:30:45AM" 57 // ------------------------------------------------------------------ 58 59 var MONTH_NAMES=new Array('January','February','March','April','May','June','July','August','September','October','November','December','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'); 60 var DAY_NAMES=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sun','Mon','Tue','Wed','Thu','Fri','Sat'); 61 function LZ(x) {return(x<0||x>9?"":"0")+x} 62 63 // ------------------------------------------------------------------ 64 // isDate ( date_string, format_string ) 65 // Returns true if date string matches format of format string and 66 // is a valid date. Else returns false. 67 // It is recommended that you trim whitespace around the value before 68 // passing it to this function, as whitespace is NOT ignored! 69 // ------------------------------------------------------------------ 70 function isDate(val,format) { 71 var date=getDateFromFormat(val,format); 72 if (date==0) { return false; } 73 return true; 74 } 75 76 // ------------------------------------------------------------------- 77 // compareDates(date1,date1format,date2,date2format) 78 // Compare two date strings to see which is greater. 79 // Returns: 80 // 1 if date1 is greater than date2 81 // 0 if date2 is greater than date1 of if they are the same 82 // -1 if either of the dates is in an invalid format 83 // ------------------------------------------------------------------- 84 function compareDates(date1,dateformat1,date2,dateformat2) { 85 var d1=getDateFromFormat(date1,dateformat1); 86 var d2=getDateFromFormat(date2,dateformat2); 87 if (d1==0 || d2==0) { 88 return -1; 89 } 90 else if (d1 > d2) { 91 return 1; 92 } 93 return 0; 94 } 95 96 // ------------------------------------------------------------------ 97 // formatDate (date_object, format) 98 // Returns a date in the output format specified. 99 // The format string uses the same abbreviations as in getDateFromFormat() 100 // ------------------------------------------------------------------ 101 function formatDate(date,format) { 102 format=format+""; 103 var result=""; 104 var i_format=0; 105 var c=""; 106 var token=""; 107 var y=date.getYear()+""; 108 var M=date.getMonth()+1; 109 var d=date.getDate(); 110 var E=date.getDay(); 111 var H=date.getHours(); 112 var m=date.getMinutes(); 113 var s=date.getSeconds(); 114 var yyyy,yy,MMM,MM,dd,hh,h,mm,ss,ampm,HH,H,KK,K,kk,k; 115 // Convert real date parts into formatted versions 116 var value=new Object(); 117 if (y.length < 4) {y=""+(y-0+1900);} 118 value["y"]=""+y; 119 value["yyyy"]=y; 120 value["yy"]=y.substring(2,4); 121 value["M"]=M; 122 value["MM"]=LZ(M); 123 value["MMM"]=MONTH_NAMES[M-1]; 124 value["NNN"]=MONTH_NAMES[M+11]; 125 value["d"]=d; 126 value["dd"]=LZ(d); 127 value["E"]=DAY_NAMES[E+7]; 128 value["EE"]=DAY_NAMES[E]; 129 value["H"]=H; 130 value["HH"]=LZ(H); 131 if (H==0){value["h"]=12;} 132 else if (H>12){value["h"]=H-12;} 133 else {value["h"]=H;} 134 value["hh"]=LZ(value["h"]); 135 if (H>11){value["K"]=H-12;} else {value["K"]=H;} 136 value["k"]=H+1; 137 value["KK"]=LZ(value["K"]); 138 value["kk"]=LZ(value["k"]); 139 if (H > 11) { value["a"]="PM"; } 140 else { value["a"]="AM"; } 141 value["m"]=m; 142 value["mm"]=LZ(m); 143 value["s"]=s; 144 value["ss"]=LZ(s); 145 while (i_format < format.length) { 146 c=format.charAt(i_format); 147 token=""; 148 while ((format.charAt(i_format)==c) && (i_format < format.length)) { 149 token += format.charAt(i_format++); 150 } 151 if (value[token] != null) { result=result + value[token]; } 152 else { result=result + token; } 153 } 154 return result; 155 } 156 157 // ------------------------------------------------------------------ 158 // Utility functions for parsing in getDateFromFormat() 159 // ------------------------------------------------------------------ 160 function _isInteger(val) { 161 var digits="1234567890"; 162 for (var i=0; i < val.length; i++) { 163 if (digits.indexOf(val.charAt(i))==-1) { return false; } 164 } 165 return true; 166 } 167 function _getInt(str,i,minlength,maxlength) { 168 for (var x=maxlength; x>=minlength; x--) { 169 var token=str.substring(i,i+x); 170 if (token.length < minlength) { return null; } 171 if (_isInteger(token)) { return token; } 172 } 173 return null; 174 } 175 176 // ------------------------------------------------------------------ 177 // getDateFromFormat( date_string , format_string ) 178 // 179 // This function takes a date string and a format string. It matches 180 // If the date string matches the format string, it returns the 181 // getTime() of the date. If it does not match, it returns 0. 182 // ------------------------------------------------------------------ 183 function getDateFromFormat(val,format) { 184 val=val+""; 185 format=format+""; 186 var i_val=0; 187 var i_format=0; 188 var c=""; 189 var token=""; 190 var token2=""; 191 var x,y; 192 var now=new Date(); 193 var year=now.getYear(); 194 var month=now.getMonth()+1; 195 var date=1; 196 var hh=now.getHours(); 197 var mm=now.getMinutes(); 198 var ss=now.getSeconds(); 199 var ampm=""; 200 201 while (i_format < format.length) { 202 // Get next token from format string 203 c=format.charAt(i_format); 204 token=""; 205 while ((format.charAt(i_format)==c) && (i_format < format.length)) { 206 token += format.charAt(i_format++); 207 } 208 // Extract contents of value based on format token 209 if (token=="yyyy" || token=="yy" || token=="y") { 210 if (token=="yyyy") { x=4;y=4; } 211 if (token=="yy") { x=2;y=2; } 212 if (token=="y") { x=2;y=4; } 213 year=_getInt(val,i_val,x,y); 214 if (year==null) { return 0; } 215 i_val += year.length; 216 if (year.length==2) { 217 if (year > 70) { year=1900+(year-0); } 218 else { year=2000+(year-0); } 219 } 220 } 221 else if (token=="MMM"||token=="NNN"){ 222 month=0; 223 for (var i=0; i<MONTH_NAMES.length; i++) { 224 var month_name=MONTH_NAMES[i]; 225 if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) { 226 if (token=="MMM"||(token=="NNN"&&i>11)) { 227 month=i+1; 228 if (month>12) { month -= 12; } 229 i_val += month_name.length; 230 break; 231 } 232 } 233 } 234 if ((month < 1)||(month>12)){return 0;} 235 } 236 else if (token=="EE"||token=="E"){ 237 for (var i=0; i<DAY_NAMES.length; i++) { 238 var day_name=DAY_NAMES[i]; 239 if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) { 240 i_val += day_name.length; 241 break; 242 } 243 } 244 } 245 else if (token=="MM"||token=="M") { 246 month=_getInt(val,i_val,token.length,2); 247 if(month==null||(month<1)||(month>12)){return 0;} 248 i_val+=month.length;} 249 else if (token=="dd"||token=="d") { 250 date=_getInt(val,i_val,token.length,2); 251 if(date==null||(date<1)||(date>31)){return 0;} 252 i_val+=date.length;} 253 else if (token=="hh"||token=="h") { 254 hh=_getInt(val,i_val,token.length,2); 255 if(hh==null||(hh<1)||(hh>12)){return 0;} 256 i_val+=hh.length;} 257 else if (token=="HH"||token=="H") { 258 hh=_getInt(val,i_val,token.length,2); 259 if(hh==null||(hh<0)||(hh>23)){return 0;} 260 i_val+=hh.length;} 261 else if (token=="KK"||token=="K") { 262 hh=_getInt(val,i_val,token.length,2); 263 if(hh==null||(hh<0)||(hh>11)){return 0;} 264 i_val+=hh.length;} 265 else if (token=="kk"||token=="k") { 266 hh=_getInt(val,i_val,token.length,2); 267 if(hh==null||(hh<1)||(hh>24)){return 0;} 268 i_val+=hh.length;hh--;} 269 else if (token=="mm"||token=="m") { 270 mm=_getInt(val,i_val,token.length,2); 271 if(mm==null||(mm<0)||(mm>59)){return 0;} 272 i_val+=mm.length;} 273 else if (token=="ss"||token=="s") { 274 ss=_getInt(val,i_val,token.length,2); 275 if(ss==null||(ss<0)||(ss>59)){return 0;} 276 i_val+=ss.length;} 277 else if (token=="a") { 278 if (val.substring(i_val,i_val+2).toLowerCase()=="am") {ampm="AM";} 279 else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {ampm="PM";} 280 else {return 0;} 281 i_val+=2;} 282 else { 283 if (val.substring(i_val,i_val+token.length)!=token) {return 0;} 284 else {i_val+=token.length;} 285 } 286 } 287 // If there are any trailing characters left in the value, it doesn't match 288 if (i_val != val.length) { return 0; } 289 // Is date valid for month? 290 if (month==2) { 291 // Check for leap year 292 if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year 293 if (date > 29){ return 0; } 294 } 295 else { if (date > 28) { return 0; } } 296 } 297 if ((month==4)||(month==6)||(month==9)||(month==11)) { 298 if (date > 30) { return 0; } 299 } 300 // Correct hours value 301 if (hh<12 && ampm=="PM") { hh=hh-0+12; } 302 else if (hh>11 && ampm=="AM") { hh-=12; } 303 var newdate=new Date(year,month-1,date,hh,mm,ss); 304 return newdate.getTime(); 305 } 306 307 // ------------------------------------------------------------------ 308 // parseDate( date_string [, prefer_euro_format] ) 309 // 310 // This function takes a date string and tries to match it to a 311 // number of possible date formats to get the value. It will try to 312 // match against the following international formats, in this order: 313 // y-M-d MMM d, y MMM d,y y-MMM-d d-MMM-y MMM d 314 // M/d/y M-d-y M.d.y MMM-d M/d M-d 315 // d/M/y d-M-y d.M.y d-MMM d/M d-M 316 // A second argument may be passed to instruct the method to search 317 // for formats like d/M/y (european format) before M/d/y (American). 318 // Returns a Date object or null if no patterns match. 319 // ------------------------------------------------------------------ 320 function parseDate(val) { 321 var preferEuro=(arguments.length==2)?arguments[1]:false; 322 generalFormats=new Array('y-M-d','MMM d, y','MMM d,y','y-MMM-d','d-MMM-y','MMM d'); 323 monthFirst=new Array('M/d/y','M-d-y','M.d.y','MMM-d','M/d','M-d'); 324 dateFirst =new Array('d/M/y','d-M-y','d.M.y','d-MMM','d/M','d-M'); 325 var checkList=new Array('generalFormats',preferEuro?'dateFirst':'monthFirst',preferEuro?'monthFirst':'dateFirst'); 326 var d=null; 327 for (var i=0; i<checkList.length; i++) { 328 var l=window[checkList[i]]; 329 for (var j=0; j<l.length; j++) { 330 d=getDateFromFormat(val,l[j]); 331 if (d!=0) { return new Date(d); } 332 } 333 } 334 return null; 335 }
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