--- /dev/null
+<?php
+
+require_once( dirname( __FILE__ ) .'/../Maintenance.php' );
+
+/**
+ * Generate first letter data files for Collation.php
+ */
+class GenerateCollationData extends Maintenance {
+ /** The directory with source data files in it */
+ var $dataDir;
+
+ /** The primary weights, indexed by codepoint */
+ var $weights;
+
+ /**
+ * A hashtable keyed by codepoint, where presence indicates that a character
+ * has a decomposition mapping. This makes it non-preferred for group header
+ * selection.
+ */
+ var $mappedChars;
+
+ var $debugOutFile;
+
+ /**
+ * Important tertiary weights from UTS #10 section 7.2
+ */
+ const NORMAL_UPPERCASE = 0x08;
+ const NORMAL_HIRAGANA = 0X0E;
+
+ public function __construct() {
+ parent::__construct();
+ $this->addOption( 'data-dir', 'A directory on the local filesystem ' .
+ 'containing allkeys.txt and ucd.all.grouped.xml from unicode.org',
+ false, true );
+ $this->addOption( 'debug-output', 'Filename for sending debug output to',
+ false, true );
+ }
+
+ public function execute() {
+ $this->dataDir = $this->getOption( 'data-dir', '.' );
+ if ( !file_exists( "{$this->dataDir}/allkeys.txt" ) ) {
+ $this->error( "Unable to find allkeys.txt. Please download it from " .
+ "http://www.unicode.org/Public/UCA/latest/allkeys.txt and specify " .
+ "its location with --data-dir=<DIR>" );
+ exit( 1 );
+ }
+ if ( !file_exists( "{$this->dataDir}/ucd.all.grouped.xml" ) ) {
+ $this->error( "Unable to find ucd.all.grouped.xml. Please download it " .
+ "from http://www.unicode.org/Public/6.0.0/ucdxml/ucd.all.grouped.zip " .
+ "and specify its location with --data-dir=<DIR>" );
+ exit( 1 );
+ }
+ $debugOutFileName = $this->getOption( 'debug-output' );
+ if ( $debugOutFileName ) {
+ $this->debugOutFile = fopen( $debugOutFileName, 'w' );
+ if ( !$this->debugOutFile ) {
+ $this->error( "Unable to open debug output file for writing" );
+ exit( 1 );
+ }
+ }
+ $this->loadUcd();
+ $this->generateFirstChars();
+ }
+
+ function loadUcd() {
+ $uxr = new UcdXmlReader( "{$this->dataDir}/ucd.all.grouped.xml" );
+ $uxr->readChars( array( $this, 'charCallback' ) );
+ }
+
+ function charCallback( $data ) {
+ // Skip non-printable characters
+ $category = substr( $data['gc'], 0, 1 );
+ if ( strpos( 'LNPS', $category ) === false ) {
+ return;
+ }
+ $cp = hexdec( $data['cp'] );
+
+ // Skip the CJK ideograph blocks, as an optimisation measure.
+ // UCA doesn't sort them properly anyway, without tailoring.
+ if ( IcuCollation::isCjk( $cp ) ) {
+ return;
+ }
+
+ // Skip the composed Hangul syllables, we will use the bare Jamo
+ // as first letters
+ if ( $data['block'] == 'Hangul Syllables' ) {
+ return;
+ }
+
+ // Calculate implicit weight per UTS #10 v6.0.0, sec 7.1.3
+ if ( $data['UIdeo'] === 'Y' ) {
+ if ( $data['block'] == 'CJK Unified Ideographs'
+ || $data['block'] == 'CJK Compatibility Ideographs' )
+ {
+ $base = 0xFB40;
+ } else {
+ $base = 0xFB80;
+ }
+ } else {
+ $base = 0xFBC0;
+ }
+ $a = $base + ( $cp >> 15 );
+ $b = ( $cp & 0x7fff ) | 0x8000;
+
+ $this->weights[$cp] = sprintf( ".%04X.%04X", $a, $b );
+
+ if ( $data['dm'] !== '#' ) {
+ $this->mappedChars[$cp] = true;
+ }
+
+ if ( $cp % 4096 == 0 ) {
+ print "{$data['cp']}\n";
+ }
+ }
+
+ function generateFirstChars() {
+ $file = fopen( "{$this->dataDir}/allkeys.txt", 'r' );
+ if ( !$file ) {
+ $this->error( "Unable to open allkeys.txt" );
+ exit( 1 );
+ }
+ global $IP;
+ $outFile = fopen( "$IP/serialized/first-letters-root.ser", 'w' );
+ if ( !$outFile ) {
+ $this->error( "Unable to open output file first-letters-root.ser" );
+ exit( 1 );
+ }
+
+ $goodTertiaryChars = array();
+
+ // For each character with an entry in allkeys.txt, overwrite the implicit
+ // entry in $this->weights that came from the UCD.
+ // Also gather a list of tertiary weights, for use in selecting the group header
+ while ( false !== ( $line = fgets( $file ) ) ) {
+ // We're only interested in single-character weights, pick them out with a regex
+ $line = trim( $line );
+ if ( !preg_match( '/^([0-9A-F]+)\s*;\s*([^#]*)/', $line, $m ) ) {
+ continue;
+ }
+
+ $cp = hexdec( $m[1] );
+ $allWeights = trim( $m[2] );
+ $primary = '';
+ $tertiary = '';
+
+ if ( !isset( $this->weights[$cp] ) ) {
+ // Non-printable, ignore
+ continue;
+ }
+ foreach ( StringUtils::explode( '[', $allWeights ) as $weightStr ) {
+ preg_match_all( '/[*.]([0-9A-F]+)/', $weightStr, $m );
+ if ( !empty( $m[1] ) ) {
+ if ( $m[1][0] !== '0000' ) {
+ $primary .= '.' . $m[1][0];
+ }
+ if ( $m[1][2] !== '0000' ) {
+ $tertiary .= '.' . $m[1][2];
+ }
+ }
+ }
+ $this->weights[$cp] = $primary;
+ if ( $tertiary === '.0008'
+ || $tertiary === '.000E' )
+ {
+ $goodTertiaryChars[$cp] = true;
+ }
+ }
+ fclose( $file );
+
+ // Identify groups of characters with the same primary weight
+ $this->groups = array();
+ asort( $this->weights, SORT_STRING );
+ $prevWeight = reset( $this->weights );
+ $group = array();
+ foreach ( $this->weights as $cp => $weight ) {
+ if ( $weight !== $prevWeight ) {
+ $this->groups[$prevWeight] = $group;
+ $prevWeight = $weight;
+ if ( isset( $this->groups[$weight] ) ) {
+ $group = $this->groups[$weight];
+ } else {
+ $group = array();
+ }
+ }
+ $group[] = $cp;
+ }
+ if ( $group ) {
+ $this->groups[$prevWeight] = $group;
+ }
+
+ // If one character has a given primary weight sequence, and a second
+ // character has a longer primary weight sequence with an initial
+ // portion equal to the first character, then remove the second
+ // character. This avoids having characters like U+A732 (double A)
+ // polluting the basic latin sort area.
+ $prevWeights = array();
+ foreach ( $this->groups as $weight => $group ) {
+ if ( preg_match( '/(\.[0-9A-F]*)\./', $weight, $m ) ) {
+ if ( isset( $this->groups[$m[1]] ) ) {
+ unset( $this->groups[$weight] );
+ }
+ }
+ }
+
+ ksort( $this->groups, SORT_STRING );
+
+ // Identify the header character in each group
+ $headerChars = array();
+ $prevChar = "\000";
+ $tertiaryCollator = new Collator( 'root' );
+ $primaryCollator = new Collator( 'root' );
+ $primaryCollator->setStrength( Collator::PRIMARY );
+ $numOutOfOrder = 0;
+ foreach ( $this->groups as $weight => $group ) {
+ $uncomposedChars = array();
+ $goodChars = array();
+ foreach ( $group as $cp ) {
+ if ( isset( $goodTertiaryChars[$cp] ) ) {
+ $goodChars[] = $cp;
+ }
+ if ( !isset( $this->mappedChars[$cp] ) ) {
+ $uncomposedChars[] = $cp;
+ }
+ }
+ $x = array_intersect( $goodChars, $uncomposedChars );
+ if ( !$x ) {
+ $x = $uncomposedChars;
+ if ( !$x ) {
+ $x = $group;
+ }
+ }
+
+ // Use ICU to pick the lowest sorting character in the selection
+ $tertiaryCollator->sort( $x );
+ $cp = $x[0];
+
+ $char = codepointToUtf8( $cp );
+ $headerChars[] = $char;
+ if ( $primaryCollator->compare( $char, $prevChar ) <= 0 ) {
+ $numOutOfOrder ++;
+ /*
+ printf( "Out of order: U+%05X > U+%05X\n",
+ utf8ToCodepoint( $prevChar ),
+ utf8ToCodepoint( $char ) );
+ */
+ }
+ $prevChar = $char;
+
+ if ( $this->debugOutFile ) {
+ fwrite( $this->debugOutFile, sprintf( "%05X %s %s (%s)\n", $cp, $weight, $char,
+ implode( ' ', array_map( 'codepointToUtf8', $group ) ) ) );
+ }
+ }
+
+ print "Out of order: $numOutOfOrder / " . count( $headerChars ) . "\n";
+
+ fwrite( $outFile, serialize( $headerChars ) );
+ }
+}
+
+class UcdXmlReader {
+ var $fileName;
+ var $callback;
+ var $groupAttrs;
+ var $xml;
+ var $blocks = array();
+ var $currentBlock;
+
+ function __construct( $fileName ) {
+ $this->fileName = $fileName;
+ }
+
+ public function readChars( $callback ) {
+ $this->getBlocks();
+ $this->currentBlock = reset( $this->blocks );
+ $xml = $this->open();
+ $this->callback = $callback;
+
+ while ( $xml->name !== 'repertoire' && $xml->next() );
+
+ while ( $xml->read() ) {
+ if ( $xml->nodeType == XMLReader::ELEMENT ) {
+ if ( $xml->name === 'group' ) {
+ $this->groupAttrs = $this->readAttributes();
+ } elseif ( $xml->name === 'char' ) {
+ $this->handleChar();
+ }
+ } elseif ( $xml->nodeType === XMLReader::END_ELEMENT ) {
+ if ( $xml->name === 'group' ) {
+ $this->groupAttrs = array();
+ }
+ }
+ }
+ $xml->close();
+ }
+
+ protected function open() {
+ $this->xml = new XMLReader;
+ $this->xml->open( $this->fileName );
+ if ( !$this->xml ) {
+ throw new MWException( __METHOD__.": unable to open {$this->fileName}" );
+ }
+ while ( $this->xml->name !== 'ucd' && $this->xml->read() );
+ $this->xml->read();
+ return $this->xml;
+ }
+
+ /**
+ * Read the attributes of the current element node and return them
+ * as an array
+ */
+ protected function readAttributes() {
+ $attrs = array();
+ while ( $this->xml->moveToNextAttribute() ) {
+ $attrs[$this->xml->name] = $this->xml->value;
+ }
+ return $attrs;
+ }
+
+ protected function handleChar() {
+ $attrs = $this->readAttributes() + $this->groupAttrs;
+ if ( isset( $attrs['cp'] ) ) {
+ $first = $last = hexdec( $attrs['cp'] );
+ } else {
+ $first = hexdec( $attrs['first-cp'] );
+ $last = hexdec( $attrs['last-cp'] );
+ unset( $attrs['first-cp'] );
+ unset( $attrs['last-cp'] );
+ }
+
+ for ( $cp = $first; $cp <= $last; $cp++ ) {
+ $hexCp = sprintf( "%04X", $cp );
+ foreach ( array( 'na', 'na1' ) as $nameProp ) {
+ if ( isset( $attrs[$nameProp] ) ) {
+ $attrs[$nameProp] = str_replace( '#', $hexCp, $attrs[$nameProp] );
+ }
+ }
+
+ while ( $this->currentBlock ) {
+ if ( $cp < $this->currentBlock[0] ) {
+ break;
+ } elseif ( $cp <= $this->currentBlock[1] ) {
+ $attrs['block'] = key( $this->blocks );
+ break;
+ } else {
+ $this->currentBlock = next( $this->blocks );
+ }
+ }
+
+ $attrs['cp'] = $hexCp;
+ call_user_func( $this->callback, $attrs );
+ }
+ }
+
+ public function getBlocks() {
+ if ( $this->blocks ) {
+ return $this->blocks;
+ }
+
+ $xml = $this->open();
+ while ( $xml->name !== 'blocks' && $xml->read() );
+
+ while ( $xml->read() ) {
+ if ( $xml->nodeType == XMLReader::ELEMENT ) {
+ if ( $xml->name === 'block' ) {
+ $attrs = $this->readAttributes();
+ $first = hexdec( $attrs['first-cp'] );
+ $last = hexdec( $attrs['last-cp'] );
+ $this->blocks[$attrs['name']] = array( $first, $last );
+ }
+ }
+ }
+ $xml->close();
+ return $this->blocks;
+ }
+
+}
+
+$maintClass = 'GenerateCollationData';
+require_once( DO_MAINTENANCE );
+
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