Index: trunk/phase3/includes/DateFormatter.php
===================================================================
--- trunk/phase3/includes/DateFormatter.php (revision 0)
+++ trunk/phase3/includes/DateFormatter.php (revision 2024)
@@ -0,0 +1,237 @@
+<?
+define("DF_ALL", -1);
+define("DF_NONE", 0);
+define("DF_MDY", 1);
+define("DF_DMY", 2);
+define("DF_YMD", 3);
+define("DF_ISO1", 4);
+define("DF_LASTPREF", 4);
+
+define("DF_ISO2", 5);
+define("DF_YDM", 6);
+define("DF_DM", 7);
+define("DF_MD", 8);
+define("DF_LAST", 8);
+
+# To do: preferences, OutputPage
+
+class DateFormatter
+{
+ var $mSource, $mTarget;
+ var $monthNames = "", $rxDM, $rxMD, $rxDMY, $rxYDM, $rxMDY, $rxYMD;
+
+ var $regexes, $pDays, $pMonths, $pYears;
+ var $rules, $xMonths;
+
+ function DateFormatter()
+ {
+ global $wgMonthNamesEn;
+
+ $this->monthNames = $this->getMonthRegex();
+ for ( $i=1; $i<=12; $i++ ) {
+ $this->xMonths[strtolower( $wgMonthNamesEn[$i-1] )] = $i;
+ }
+
+ # Attempt at UTF-8 support, untested at the moment
+ if ( $wgInputEncoding == 'UTF-8' ) {
+ $this->regexTrail = '(?![a-z])/iu';
+ } else {
+ $this->regexTrail = '(?![a-z])/i';
+ }
+
+ # Partial regular expressions
+ $this->prxDM = '\[\[(\d{1,2})[ _](' . $this->monthNames . ')]]';
+ $this->prxMD = '\[\[(' . $this->monthNames . ')[ _](\d{1,2})]]';
+ $this->prxY = '\[\[(\d{1,4}([ _]BC|))]]';
+ $this->prxISO1 = '\[\[(-?\d{4})]]-\[\[(\d{2})-(\d{2})]]';
+ $this->prxISO2 = '\[\[(-?\d{4})-(\d{2})-(\d{2})]]';
+
+ # Real regular expressions
+ $this->regexes[DF_DMY] = "/{$this->prxDM} *,? *{$this->prxY}{$this->regexTrail}";
+ $this->regexes[DF_YDM] = "/{$this->prxY} *,? *{$this->prxDM}{$this->regexTrail}";
+ $this->regexes[DF_MDY] = "/{$this->prxMD} *,? *{$this->prxY}{$this->regexTrail}";
+ $this->regexes[DF_YMD] = "/{$this->prxY} *,? *{$this->prxMD}{$this->regexTrail}";
+ $this->regexes[DF_DM] = "/{$this->prxDM}{$this->regexTrail}";
+ $this->regexes[DF_MD] = "/{$this->prxMD}{$this->regexTrail}";
+ $this->regexes[DF_ISO1] = "/{$this->prxISO1}{$this->regexTrail}";
+ $this->regexes[DF_ISO2] = "/{$this->prxISO2}{$this->regexTrail}";
+
+ # Extraction keys
+ # See the comments in replace() for the meaning of the letters
+ $this->keys[DF_DMY] = "jFY";
+ $this->keys[DF_YDM] = "Y jF";
+ $this->keys[DF_MDY] = "FjY";
+ $this->keys[DF_YMD] = "Y Fj";
+ $this->keys[DF_DM] = "jF";
+ $this->keys[DF_MD] = "Fj";
+ $this->keys[DF_ISO1] = "ymd"; # y means ISO year
+ $this->keys[DF_ISO2] = "ymd";
+
+ # Target date formats
+ $this->targets[DF_DMY] = "[[F j|j F]] [[Y]]";
+ $this->targets[DF_YDM] = "[[Y]], [[F j|j F]]";
+ $this->targets[DF_MDY] = "[[F j]], [[Y]]";
+ $this->targets[DF_YMD] = "[[Y]] [[F j]]";
+ $this->targets[DF_DM] = "[[F j|j F]]";
+ $this->targets[DF_MD] = "[[F j]]";
+ $this->targets[DF_ISO1] = "[[Y|y]]-[[F j|m-d]]";
+ $this->targets[DF_ISO2] = "[[y-m-d]]";
+
+ # Rules
+ # pref source target
+ $this->rules[DF_DMY][DF_MD] = DF_DM;
+ $this->rules[DF_ALL][DF_MD] = DF_MD;
+ $this->rules[DF_MDY][DF_DM] = DF_MD;
+ $this->rules[DF_ALL][DF_DM] = DF_DM;
+ $this->rules[DF_NONE][DF_ISO2] = DF_ISO1;
+ }
+
+ function reformat( $preference, $text )
+ {
+ for ( $i=1; $i<=DF_LAST; $i++ ) {
+ $this->mSource = $i;
+ if ( $this->rules[$preference][$i] ) {
+ # Specific rules
+ $this->mTarget = $this->rules[$preference][$i];
+ } elseif ( $this->rules[DF_ALL][$i] ) {
+ # General rules
+ $this->mTarget = $this->rules[DF_ALL][$i];
+ } elseif ( $preference ) {
+ # User preference
+ $this->mTarget = $preference;
+ } else {
+ # Default
+ $this->mTarget = $i;
+ }
+ $text = preg_replace_callback( $this->regexes[$i], "wfMainDateReplace", $text );
+ }
+ return $text;
+ }
+
+ function replace( $matches )
+ {
+ global $wgMonthNamesEn;
+ # Extract information from $matches
+ $bits = array();
+ $key = $this->keys[$this->mSource];
+ for ( $p=0; $p < strlen($key); $p++ ) {
+ if ( $key{$p} != ' ' ) {
+ $bits[$key{$p}] = $matches[$p+1];
+ }
+ }
+
+ $format = $this->targets[$this->mTarget];
+
+ # Construct new date
+ $text = "";
+ $fail = false;
+
+ for ( $p=0; $p < strlen( $format ); $p++ ) {
+ $char = $format{$p};
+ switch ( $char ) {
+ case 'd': # ISO day of month
+ if ( is_null($bits['d']) ) {
+ $text .= sprintf( "%02d", $bits['j'] );
+ } else {
+ $text .= $bits['d'];
+ }
+ break;
+ case 'm': # ISO month
+ if ( is_null($bits['m']) ) {
+ $m = $this->makeIsoMonth( $bits['F'] );
+ if ( !$m || $m == "00" ) {
+ $fail = true;
+ } else {
+ $text .= $m;
+ }
+ } else {
+ $text .= $bits['m'];
+ }
+ break;
+ case 'y': # ISO year
+ if ( is_null( $bits['y'] ) ) {
+ $text .= $this->makeIsoYear( $bits['Y'] );
+ } else {
+ $text .= $bits['y'];
+ }
+ break;
+ case 'j': # ordinary day of month
+ if ( is_null($bits['j']) ) {
+ $text .= IntVal( $bits['d'] );
+ } else {
+ $text .= $bits['j'];
+ }
+ break;
+ case 'F': # long month
+ if ( is_null( $bits['F'] ) ) {
+ $m = IntVal($bits['m']);
+ if ( $m > 12 || $m < 1 ) {
+ $fail = true;
+ } else {
+ $text .= $wgMonthNamesEn[$m-1];
+ }
+ } else {
+ $text .= ucfirst( $bits['F'] );
+ }
+ break;
+ case 'Y': # ordinary (optional BC) year
+ if ( is_null( $bits['Y'] ) ) {
+ $text .= $this->makeNormalYear( $bits['y'] );
+ } else {
+ $text .= $bits['Y'];
+ }
+ break;
+ default:
+ $text .= $char;
+ }
+ }
+ if ( $fail ) {
+ $text = $matches[0];
+ }
+ return $text;
+ }
+
+ function getMonthRegex()
+ {
+ global $wgMonthNamesEn;
+ return implode( "|", $wgMonthNamesEn );
+ }
+
+ # Makes an ISO month, e.g. 02, from a month name
+ function makeIsoMonth( $monthName )
+ {
+ $n = $this->xMonths[strtolower( $monthName )];
+ return sprintf( "%02d", $n );
+ }
+
+ function makeIsoYear( $year )
+ {
+ # Assumes the year is in a nice format, as enforced by the regex
+ if ( substr( $year, -2 ) == 'BC' ) {
+ $num = IntVal(substr( $year, 0, -3 )) - 1;
+ # PHP bug note: sprintf( "%04d", -1 ) fails poorly
+ $text = sprintf( "-%04d", $num );
+
+ } else {
+ $text = sprintf( "%04d", $year );
+ }
+ return $text;
+ }
+
+ function makeNormalYear( $iso )
+ {
+ if ( $iso{0} == '-' ) {
+ $text = (IntVal( substr( $iso, 1 ) ) - 1) . " BC";
+ } else {
+ $text = IntVal( $iso );
+ }
+ return $text;
+ }
+}
+
+function wfMainDateReplace( $matches )
+{
+ global $wgDateFormatter;
+ return $wgDateFormatter->replace( $matches );
+}
+?>
Property changes on: trunk/phase3/includes/DateFormatter.php
___________________________________________________________________
Name: svn:eol-style
+ native
Name: svn:executable
+ *
Name: svn:keywords
+ Author Date Id Revision
