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-rw-r--r--library/langdet/Text/LanguageDetect/Parser.php349
1 files changed, 0 insertions, 349 deletions
diff --git a/library/langdet/Text/LanguageDetect/Parser.php b/library/langdet/Text/LanguageDetect/Parser.php
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index 1c20c2657..000000000
--- a/library/langdet/Text/LanguageDetect/Parser.php
+++ /dev/null
@@ -1,349 +0,0 @@
-<?php
-
-/**
- * This class represents a text sample to be parsed.
- *
- * @category Text
- * @package Text_LanguageDetect
- * @author Nicholas Pisarro
- * @copyright 2006
- * @license BSD
- * @version CVS: $Id: Parser.php 322327 2012-01-15 17:55:59Z cweiske $
- * @link http://pear.php.net/package/Text_LanguageDetect/
- * @link http://langdetect.blogspot.com/
- */
-
-/**
- * This class represents a text sample to be parsed.
- *
- * This separates the analysis of a text sample from the primary LanguageDetect
- * class. After a new profile has been built, the data can be retrieved using
- * the accessor functions.
- *
- * This class is intended to be used by the Text_LanguageDetect class, not
- * end-users.
- *
- * @category Text
- * @package Text_LanguageDetect
- * @author Nicholas Pisarro
- * @copyright 2006
- * @license BSD
- * @version release: 0.3.0
- */
-class Text_LanguageDetect_Parser extends Text_LanguageDetect
-{
- /**
- * the piece of text being parsed
- *
- * @access private
- * @var string
- */
- var $_string;
-
- /**
- * stores the trigram frequencies of the sample
- *
- * @access private
- * @var string
- */
- var $_trigrams = array();
-
- /**
- * stores the trigram ranks of the sample
- *
- * @access private
- * @var array
- */
- var $_trigram_ranks = array();
-
- /**
- * stores the unicode blocks of the sample
- *
- * @access private
- * @var array
- */
- var $_unicode_blocks = array();
-
- /**
- * Whether the parser should compile the unicode ranges
- *
- * @access private
- * @var bool
- */
- var $_compile_unicode = false;
-
- /**
- * Whether the parser should compile trigrams
- *
- * @access private
- * @var bool
- */
- var $_compile_trigram = false;
-
- /**
- * Whether the trigram parser should pad the beginning of the string
- *
- * @access private
- * @var bool
- */
- var $_trigram_pad_start = false;
-
- /**
- * Whether the unicode parser should skip non-alphabetical ascii chars
- *
- * @access private
- * @var bool
- */
- var $_unicode_skip_symbols = true;
-
- /**
- * Constructor
- *
- * @access private
- * @param string $string string to be parsed
- */
- function Text_LanguageDetect_Parser($string) {
- $this->_string = $string;
- }
-
- /**
- * Returns true if a string is suitable for parsing
- *
- * @param string $str input string to test
- * @return bool true if acceptable, false if not
- */
- public static function validateString($str) {
- if (!empty($str) && strlen($str) > 3 && preg_match('/\S/', $str)) {
- return true;
- } else {
- return false;
- }
- }
-
- /**
- * turn on/off trigram counting
- *
- * @access public
- * @param bool $bool true for on, false for off
- */
- function prepareTrigram($bool = true)
- {
- $this->_compile_trigram = $bool;
- }
-
- /**
- * turn on/off unicode block counting
- *
- * @access public
- * @param bool $bool true for on, false for off
- */
- function prepareUnicode($bool = true)
- {
- $this->_compile_unicode = $bool;
- }
-
- /**
- * turn on/off padding the beginning of the sample string
- *
- * @access public
- * @param bool $bool true for on, false for off
- */
- function setPadStart($bool = true)
- {
- $this->_trigram_pad_start = $bool;
- }
-
- /**
- * Should the unicode block counter skip non-alphabetical ascii chars?
- *
- * @access public
- * @param bool $bool true for on, false for off
- */
- function setUnicodeSkipSymbols($bool = true)
- {
- $this->_unicode_skip_symbols = $bool;
- }
-
- /**
- * Returns the trigram ranks for the text sample
- *
- * @access public
- * @return array trigram ranks in the text sample
- */
- function &getTrigramRanks()
- {
- return $this->_trigram_ranks;
- }
-
- /**
- * Return the trigram freqency table
- *
- * only used in testing to make sure the parser is working
- *
- * @access public
- * @return array trigram freqencies in the text sample
- */
- function &getTrigramFreqs()
- {
- return $this->_trigram;
- }
-
- /**
- * returns the array of unicode blocks
- *
- * @access public
- * @return array unicode blocks in the text sample
- */
- function &getUnicodeBlocks()
- {
- return $this->_unicode_blocks;
- }
-
- /**
- * Executes the parsing operation
- *
- * Be sure to call the set*() functions to set options and the
- * prepare*() functions first to tell it what kind of data to compute
- *
- * Afterwards the get*() functions can be used to access the compiled
- * information.
- *
- * @access public
- */
- function analyze()
- {
- $len = strlen($this->_string);
- $byte_counter = 0;
-
-
- // unicode startup
- if ($this->_compile_unicode) {
- $blocks = $this->_read_unicode_block_db();
- $block_count = count($blocks);
-
- $skipped_count = 0;
- $unicode_chars = array();
- }
-
- // trigram startup
- if ($this->_compile_trigram) {
- // initialize them as blank so the parser will skip the first two
- // (since it skips trigrams with more than 2 contiguous spaces)
- $a = ' ';
- $b = ' ';
-
- // kludge
- // if it finds a valid trigram to start and the start pad option is
- // off, then set a variable that will be used to reduce this
- // trigram after parsing has finished
- if (!$this->_trigram_pad_start) {
- $a = $this->_next_char($this->_string, $byte_counter, true);
-
- if ($a != ' ') {
- $b = $this->_next_char($this->_string, $byte_counter, true);
- $dropone = " $a$b";
- }
-
- $byte_counter = 0;
- $a = ' ';
- $b = ' ';
- }
- }
-
- while ($byte_counter < $len) {
- $char = $this->_next_char($this->_string, $byte_counter, true);
-
-
- // language trigram detection
- if ($this->_compile_trigram) {
- if (!($b == ' ' && ($a == ' ' || $char == ' '))) {
- if (!isset($this->_trigram[$a . $b . $char])) {
- $this->_trigram[$a . $b . $char] = 1;
- } else {
- $this->_trigram[$a . $b . $char]++;
- }
- }
-
- $a = $b;
- $b = $char;
- }
-
- // unicode block detection
- if ($this->_compile_unicode) {
- if ($this->_unicode_skip_symbols
- && strlen($char) == 1
- && ($char < 'A' || $char > 'z'
- || ($char > 'Z' && $char < 'a'))
- && $char != "'") { // does not skip the apostrophe
- // since it's included in the language
- // models
-
- $skipped_count++;
- continue;
- }
-
- // build an array of all the characters
- if (isset($unicode_chars[$char])) {
- $unicode_chars[$char]++;
- } else {
- $unicode_chars[$char] = 1;
- }
- }
-
- // todo: add byte detection here
- }
-
- // unicode cleanup
- if ($this->_compile_unicode) {
- foreach ($unicode_chars as $utf8_char => $count) {
- $search_result = $this->_unicode_block_name(
- $this->_utf8char2unicode($utf8_char), $blocks, $block_count);
-
- if ($search_result != -1) {
- $block_name = $search_result[2];
- } else {
- $block_name = '[Malformatted]';
- }
-
- if (isset($this->_unicode_blocks[$block_name])) {
- $this->_unicode_blocks[$block_name] += $count;
- } else {
- $this->_unicode_blocks[$block_name] = $count;
- }
- }
- }
-
-
- // trigram cleanup
- if ($this->_compile_trigram) {
- // pad the end
- if ($b != ' ') {
- if (!isset($this->_trigram["$a$b "])) {
- $this->_trigram["$a$b "] = 1;
- } else {
- $this->_trigram["$a$b "]++;
- }
- }
-
- // perl compatibility; Language::Guess does not pad the beginning
- // kludge
- if (isset($dropone)) {
- if ($this->_trigram[$dropone] == 1) {
- unset($this->_trigram[$dropone]);
- } else {
- $this->_trigram[$dropone]--;
- }
- }
-
- if (!empty($this->_trigram)) {
- $this->_trigram_ranks = $this->_arr_rank($this->_trigram);
- } else {
- $this->_trigram_ranks = array();
- }
- }
- }
-}
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-?>
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