/**
* アンカーの構成要素（正規表現パーツの配列）を返す
*
* @param void
* @return string
*/
private static function _getAnchorRegexParts()
{
if (!is_null(self::$_anchorRegexParts)) {
return self::$_anchorRegexParts;
}
$anchor = array();
// アンカーの構成要素（正規表現パーツの配列）
// 空白文字
$anchor_space = '(?:[ ]| )';
//$anchor[' '] = '';
// アンカー引用子 >>
$anchor['prefix'] = "(?:(?:>|＞|<|＜|〉){1,2}|(?:\\)){2}|》|≫){$anchor_space}*\\.?";
// 数字
$anchor['a_digit'] = '(?:\\d|０|１|２|３|４|５|６|７|８|９)';
/*
$anchor[0] = '(?:0|０)';
$anchor[1] = '(?:1|１)';
$anchor[2] = '(?:2|２)';
$anchor[3] = '(?:3|３)';
$anchor[4] = '(?:4|４)';
$anchor[5] = '(?:5|５)';
$anchor[6] = '(?:6|６)';
$anchor[7] = '(?:7|７)';
$anchor[8] = '(?:8|８)';
$anchor[9] = '(?:9|９)';
*/
// 範囲指定子
// -|‐|ー = HYPHEN-MINUS | HYPHEN | KATAKANA-HIRAGANA PROLONGED SOUND MARK
$anchor['range_delimiter'] = '(?:-|\\x81\\x5d|\\x81\\x5b)';
// [\\-\\x{2010}\\x{30fc}]
// 列挙指定子
$anchor['delimiter'] = "{$anchor_space}?(?:[\\.,=+]|、|・|＝|，){$anchor_space}?";
// あぼーん用アンカー引用子
//$anchor['prefix_abon'] = ">{1,2}{$anchor_space}?";
// レス番号
$anchor['a_num'] = sprintf('%s{1,4}', $anchor['a_digit']);
// レス範囲
/*
$anchor['a_range'] = sprintf('%s(?:%s%s)?',
$anchor['a_num'], $anchor['range_delimiter'], $anchor['a_num']
);
*/
$anchor['a_range'] = sprintf('%s(?:%s(?:%s)?%s)?', $anchor['a_num'], $anchor['range_delimiter'], $anchor['prefix'], $anchor['a_num']);
// レス範囲の列挙
$anchor['ranges'] = sprintf('%s(?:%s%s)*(?!%s)', $anchor['a_range'], $anchor['delimiter'], $anchor['a_range'], $anchor['a_digit']);
// レス番号の列挙
$anchor['nums'] = sprintf('%s(?:%s%s)*(?!%s)', $anchor['a_num'], $anchor['delimiter'], $anchor['a_num'], $anchor['a_digit']);
// アンカー全体
$anchor['full'] = sprintf('(%s)(%s)', $anchor['prefix'], $anchor['ranges']);
// getAnchorRegex() の strtr() 置換用にkeyを '%key%' に変換する
foreach ($anchor as $k => $v) {
$anchor['%' . $k . '%'] = $v;
unset($anchor[$k]);
}
self::$_anchorRegexParts = $anchor;
return self::$_anchorRegexParts;
}
