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1269 lines
31 KiB
1269 lines
31 KiB
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/* |
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* 漢字標準格式 v2.2.0 |
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* --- |
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* Hanzi-optimised CSS Mode |
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* |
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* |
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* |
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* Lisence: MIT Lisence |
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* Last Modified: 2013/11/27 |
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* |
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*/ |
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jQuery.noConflict(); |
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(function($){ |
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var version = '2.2.0', |
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tests = [], |
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rubies, |
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unicode = [], |
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rendered = 'han-js-rendered', |
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classes = [rendered], |
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fontfaces = [], |
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han = function() { |
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$(document).on('ready', function(){ |
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// `unicode-range` |
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classes.push( ( test_for_unicoderange() ? '' : 'no-' ) + 'unicoderange' ); |
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// The 4(-1) Typefaces |
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fontfaces['songti'] = test_for_fontface( 'Han Songti' ); |
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fontfaces['kaiti'] = test_for_fontface( 'Han Kaiti' ); |
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fontfaces['fangsong'] = test_for_fontface( 'Han Fangsong' ); |
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for ( var font in fontfaces ) { |
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classes.push( ( fontfaces[font] ? '' : 'no-' ) + 'fontface-' + font ); |
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} |
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// altogether |
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$('html').addClass( classes.join(' ') ); |
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init(); |
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}); |
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}, |
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init = function( range ) { |
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if ( !range && $('html').hasClass('no-han-init') ) |
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return; |
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var range = range || 'body'; |
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if ( range !== 'body' && !$(range).hasClass(rendered) ) |
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$(range).addClass(rendered); |
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else if ( range === 'body' && !$('html').hasClass(rendered) ) |
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$('html').addClass(rendered); |
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/* |
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* 加強漢字註音功能 |
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* --- |
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* Enhance `<ruby>` element |
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* |
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* **注意：**需置於`<em>`的hack前。 |
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* |
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* **Note:** The necessity of being |
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* placed before the hack of |
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* the `<em>` element is required. |
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*/ |
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$(range).find('ruby.pinyin').addClass('romanization'); |
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$(range).find('ruby.zhuyin').addClass('mps'); |
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$(range).find('ruby').each(function() { |
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var html = $(this).html(); |
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// 羅馬拼音（在不支援`<ruby>`的瀏覽器下） |
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if ( !$(this).hasClass('mps') && !tests['ruby']() ) { |
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var result = html |
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.replace(/<rt>/ig, '</span><span class="rt"><span class="rt inner">') |
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.replace(/<\/rt>/ig, '</span></span></span><span class="rr"><span class="rb">'); |
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$(this).html('<span class="rr"><span class="rb">' + result + '</span>'); |
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// 注音符號 |
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} else if ( $(this).hasClass('mps') ) { |
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var generic = $(this).css('font-family'), |
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zhuyin_font = ( generic.match(/(sans-serif|monospace)$/) ) ? 'sans-serif' : 'serif', |
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hanzi = unicode_set('hanzi'), |
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shengmu = unicode['bopomofo']['mps']['shengmu'], |
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jieyin = unicode['bopomofo']['mps']['jieyin'], |
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yunmu = unicode['bopomofo']['mps']['yunmu'], |
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tone = unicode['bopomofo']['tone']['five'], |
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reg = '/(' + hanzi + ')<rt>(.*)<\\/rt>/ig'; |
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html = html.replace(eval(reg), function(entire, character, mps){ |
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var form, yin, diao, data, zi; |
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form = ( mps.match(eval('/(' + shengmu + ')/')) ) ? 'shengmu' : ''; |
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form += ( mps.match(eval('/(' + jieyin + ')/')) ) ? (( form !== '' ) ? '-' : '') + 'jieyin' : ''; |
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form += ( mps.match(eval('/(' + yunmu + ')/')) ) ? (( form !== '' ) ? '-' : '') + 'yunmu' : ''; |
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yin = mps.replace(eval('/(' + tone + ')/g'), ''), |
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diao = ( mps.match(/([\u02D9])/) ) ? '0' : |
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( mps.match(/([\u02CA])/) ) ? '2' : |
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( mps.match(/([\u02C5\u02C7])/) ) ? '3' : |
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( mps.match(/([\u02CB])/) ) ? '4' : '1'; |
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data = 'data-zy="' + yin + '" data-tone="' + diao + '" data-form="' + form + '"'; |
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zi = '<span class="zi" ' + data + '>' + character + '</span>'; |
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return zi + '<span class="zy">' + mps + '</span>'; |
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}); |
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$(this).replaceWith( |
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$('<span class="han-js-zhuyin-rendered"></span>').addClass('zhuyin-' + zhuyin_font).html( html ) |
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); |
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} |
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}); |
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/* |
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* 漢拉間隙 |
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* --- |
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* Kerning between Hanzi and Latin Letter |
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* |
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*/ |
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if ( $('html').hasClass('han-la') ) |
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$(range).each(function(){ |
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var hanzi = unicode_set('hanzi'), |
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latin = unicode_set('latin') + '|' + unicode['punc'][0], |
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punc = unicode['punc']; |
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patterns = [ |
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'/(' + hanzi + ')(' + latin + '|' + punc[1] + ')/ig', |
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'/(' + latin + '|' + punc[2] + ')(' + hanzi + ')/ig' |
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]; |
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patterns.forEach(function( exp ){ |
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findAndReplaceDOMText(this, { |
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find: eval(exp), |
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replace: '$1<hanla>$2' |
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}); |
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}, this); |
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findAndReplaceDOMText(this, { |
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find: '<hanla>', |
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replace: function(){ |
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return _span( 'hanla' ); |
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} |
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}); |
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this.normalize(); |
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$('* > span.hanla:first-child').parent().each(function(){ |
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if ( this.firstChild.nodeType == 1 ) { |
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$(this).before( $('<span class="hanla"></span>') ); |
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$(this).find('span.hanla:first-child').remove(); |
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} |
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}); |
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}); |
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/* |
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* 修正相鄰註記元素`<u>`的底線相連問題 |
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* --- |
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* fixing the underline-adjacency issue on `<u>` element |
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* |
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*/ |
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if ( $('html').hasClass('han-lab-underline') ) |
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$(range).find('u').charize('', true, true); |
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else |
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$(range).find('u').each(function(){ |
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var next = this.nextSibling; |
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_ignore(next); |
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_adj(next); |
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function _adj( next ) { |
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if ( next.nodeName === "U" ) |
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$(next).addClass('adjacent'); |
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} |
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function _ignore( next ) { |
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if ( next.nodeName === "WBR" || next.nodeType == 8 ) { |
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var next = next.nextSibling; |
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_ignore(next); |
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_adj(next); |
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} |
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} |
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}); |
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/* 強調元素`<em>`的着重號 |
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* --- |
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* punctuation: CJK emphasis dots on `<em>` element |
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* |
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*/ |
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$(range).find('em').charize({ |
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latin: ( tests['textemphasis']() ) ? 'none' : 'individual' |
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}); |
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/* 修正引言元素`<q>`不為WebKit引擎支援的問題 |
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* --- |
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* punctuation: Quote issue on `<q>` element (WebKit) |
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* |
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*/ |
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if ( !tests['quotes']() ) |
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$(range).find('q q').each(function() { |
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if ( $(this).parents('q').length%2 != 0 ) |
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$(this).addClass('double'); |
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}); |
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}, |
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unicode_set = function( set ) { |
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var join = ( set.match(/[hanzi|latin]/) ) ? true : false, |
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result = ( join ) ? unicode[set].join('|') : unicode[set]; |
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return result; |
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}, |
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_span = function( className ) { |
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var span = document.createElement('span'); |
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span.className = className; |
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return span; |
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}, |
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findAndReplaceDOMText = function( a, b ) { |
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var b = b; |
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b.filterElements = function( el ) { |
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var name = el.nodeName.toLowerCase(), |
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classes = ( el.nodeType == 1 ) ? el.getAttribute('class') : '', |
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charized = ( classes && classes.match(/han-js-charized/) != null ) ? true : false; |
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return name !== 'style' && name !== 'script' && !charized; |
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}; |
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return window.findAndReplaceDOMText(a,b); |
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}, |
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inject_element_with_styles = function( rule, callback, nodes, testnames ) { |
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var style, ret, node, docOverflow, |
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docElement = document.documentElement, |
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div = document.createElement('div'), |
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body = document.body, |
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fakeBody = body || document.createElement('body'); |
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style = ['<style id="han-support">', rule, '</style>'].join(''); |
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(body ? div : fakeBody).innerHTML += style; |
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fakeBody.appendChild(div); |
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if ( !body ) { |
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fakeBody.style.background = ''; |
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fakeBody.style.overflow = 'hidden'; |
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docOverflow = docElement.style.overflow; |
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docElement.style.overflow = 'hidden'; |
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docElement.appendChild(fakeBody); |
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} |
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ret = callback(div, rule); |
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if ( !body ) { |
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fakeBody.parentNode.removeChild(fakeBody); |
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docElement.style.overflow = docOverflow; |
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} else |
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div.parentNode.removeChild(div); |
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return !!ret; |
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}, |
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write_on_canvas = function( text, font ) { |
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var canvasNode = document.createElement('canvas'); |
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canvasNode.width = '50'; |
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canvasNode.height = '20'; |
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canvasNode.style.display = 'none'; |
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canvasNode.className = 'han_support_tests'; |
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document.body.appendChild(canvasNode); |
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var ctx = canvasNode.getContext('2d'); |
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ctx.textBaseline = 'top'; |
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ctx.font = '15px ' + font + ', sans-serif'; |
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ctx.fillStyle = 'black'; |
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ctx.strokeStyle = 'black'; |
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ctx.fillText( text, 0, 0 ); |
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return ctx; |
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}, |
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test_for_fontface = function( test, compare, zi ) { |
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if ( !tests['fontface']() ) |
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return false; |
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var test = test, |
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compare = compare || 'sans-serif', |
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zi = zi || '辭Q'; |
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try { |
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var sans = write_on_canvas( zi, compare ), |
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test = write_on_canvas( zi, test ), |
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support; |
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for (var j = 1; j <= 20; j++) { |
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for (var i = 1; i <= 50; i++) { |
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var sansData = sans.getImageData(i, j, 1, 1).data, |
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testData = test.getImageData(i, j, 1, 1).data, |
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alpha = []; |
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alpha['sans'] = sansData[3]; |
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alpha['test'] = testData[3]; |
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if ( support !== 'undefined' && alpha['test'] != alpha['sans'] ) |
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support = true; |
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else if ( support ) |
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break; |
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if ( i == 20 && j == 20 ) |
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if ( !support ) |
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support = false; |
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} |
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} |
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$('canvas.han_support_tests').remove(); |
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return support; |
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} catch ( err ) { |
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return false; |
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} |
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}; |
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test_for_unicoderange = function() { |
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return !test_for_fontface( 'han-unicode-range', 'Arial, "Droid Sans"', 'a' ); |
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}; |
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/* -------------------------------------------------------- |
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* Unicode區域說明（6.2.0） |
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* -------------------------------------------------------- |
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* 或參考： |
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* http://css.hanzi.co/manual/api/javascript_jiekou-han.unicode |
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* -------------------------------------------------------- |
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* |
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** 以下歸類為「拉丁字母」（`unicode('latin')`）** |
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* |
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* 基本拉丁字母：a-z |
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* 阿拉伯數字：0-9 |
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* 拉丁字母補充-1：[\u00C0-\u00FF] |
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* 拉丁字母擴展-A區：[\u0100-\u017F] |
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* 拉丁字母擴展-B區：[\u0180-\u024F] |
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* 拉丁字母附加區：[\u1E00-\u1EFF] |
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* |
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** 符號：[~!@#&;=_\$\%\^\*\-\+\,\.\/(\\)\?\:\'\"\[\]\(\)'"<>‘“”’] |
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* |
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* -------------------------------------------------------- |
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* |
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** 以下歸類為「漢字」（`unicode（'hanzi')`）** |
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* |
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* CJK一般：[\u4E00-\u9FFF] |
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* CJK擴展-A區：[\u3400-\u4DB5] |
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* CJK擴展-B區：[\u20000-\u2A6D6] |
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* CJK Unicode 4.1：[\u9FA6-\u9FBB]、[\uFA70-\uFAD9] |
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* CJK Unicode 5.1：[\u9FBC-\u9FC3] |
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* CJK擴展-C區：[\u2A700-\u2B734] |
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* CJK擴展-D區：[\u2B740-\u2B81D]（急用漢字） |
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* CJK擴展-E區：[\u2B820-\u2F7FF]（**註**：暫未支援） |
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* CJK擴展-F區（**註**：暫未支援） |
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* CJK筆畫區：[\u31C0-\u31E3] |
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* 數字「〇」：[\u3007] |
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* 日文假名：[\u3040-\u309E][\u30A1-\u30FA][\u30FD\u30FE]（**註**：排除片假名中點、長音符） |
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* |
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* CJK相容表意文字： |
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* [\uF900-\uFAFF]（**註**：不使用） |
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* [\uFA0E-\uFA0F\uFA11\uFA13-\uFA14\uFA1F\uFA21\uFA23-\uFA24\uFA27-\uFA29]（**註**：12個例外） |
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* -------------------------------------------------------- |
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* |
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** 符號 |
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* [·・︰、，。：；？！—⋯…．·「『（〔【《〈“‘」』）〕】》〉’”–ー—] |
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* |
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** 其他 |
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* |
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* 漢語注音符號、擴充：[\u3105-\u312D][\u31A0-\u31BA] |
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* 國語五聲調（三聲有二種符號）：[\u02D9\u02CA\u02C5\u02C7\u02CB] |
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* 台灣漢語方言音擴充聲調：[\u02EA\u02EB] |
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* |
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* |
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*/ |
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unicode['latin'] = [ |
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'[A-Za-z0-9\u00C0-\u00FF\u0100-\u017F\u0180-\u024F\u1E00-\u1EFF]' |
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]; |
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unicode['punc'] = [ |
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'[@&;=_\,\.\?\!\$\%\^\*\-\+\/]', |
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'[\(\\[\'"<‘“]', |
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'[\)\\]\'">”’]' |
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]; |
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unicode['hanzi'] = [ |
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'[\u4E00-\u9FFF]', |
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'[\u3400-\u4DB5\u9FA6-\u9FBB\uFA70-\uFAD9\u9FBC-\u9FC3\u3007\u3040-\u309E\u30A1-\u30FA\u30FD\u30FE\uFA0E-\uFA0F\uFA11\uFA13-\uFA14\uFA1F\uFA21\uFA23-\uFA24\uFA27-\uFA29]', |
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'[\uD840-\uD868][\uDC00-\uDFFF]|\uD869[\uDC00-\uDEDF]', |
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'\uD86D[\uDC00-\uDF3F]|[\uD86A-\uD86C][\uDC00-\uDFFF]|\uD869[\uDF00-\uDFFF]', |
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'\uD86D[\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1F]', |
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'[\u31C0-\u31E3]' |
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]; |
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unicode['biaodian'] = [ |
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'[·・︰、，。：；？！—ー⋯…．·／]', |
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'[「『（〔【《〈“‘]', |
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'[」』）〕】》〉’”]' |
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]; |
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unicode['bopomofo'] = []; |
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unicode['bopomofo']['mps'] = []; |
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unicode['bopomofo']['mps'][0] = '[\u3105-\u312D]'; |
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unicode['bopomofo']['mps']['shengmu'] = '[\u3105-\u3119\u312A-\u312C]'; |
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unicode['bopomofo']['mps']['jieyin'] = '[\u3127-\u3129]'; |
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unicode['bopomofo']['mps']['yunmu'] = '[\u311A-\u3126\u312D]'; |
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unicode['bopomofo']['extend'] = '[\u31A0-\u31BA]'; |
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unicode['bopomofo']['tone'] = []; |
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unicode['bopomofo']['tone']['five'] = '[\u02D9\u02CA\u02C5\u02C7\u02CB]'; |
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unicode['bopomofo']['tone']['extend'] = '[\u02EA\u02EB]'; |
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/* tests for HTML5/CSS3 features */ |
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|
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/* CSS3 property: `column-width` */ |
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tests['columnwidth'] = function() { |
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var cw = $('<div style="display: none; column-width: 200px; -webkit-column-width: 200px;">tester</div>'), |
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bool = ( /^200px$/.test( cw.css("-webkit-column-width") ) || |
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/^200px$/.test( cw.css("-moz-column-width") ) || |
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/^200px$/.test( cw.css("-ms-column-width") ) || |
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/^200px$/.test( cw.css("column-width") ) ) ? true : false; |
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return bool; |
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}; |
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/* -------------------------------------------------------- |
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* test for '@font-face' |
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* -------------------------------------------------------- |
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* Originates from Modernizr (http://modernizr.com) |
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*/ |
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tests['fontface'] = function() { |
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var bool; |
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inject_element_with_styles('@font-face {font-family:"font";src:url("https://")}', function( node, rule ) { |
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var style = document.getElementById('han-support'), |
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sheet = style.sheet || style.styleSheet, |
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cssText = sheet ? (sheet.cssRules && sheet.cssRules[0] ? sheet.cssRules[0].cssText : sheet.cssText || '') : ''; |
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bool = /src/i.test(cssText) && cssText.indexOf(rule.split(' ')[0]) === 0; |
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}); |
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return bool; |
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}; |
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tests['ruby'] = function() { |
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if ( rubies != null ) |
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return rubies; |
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var ruby = document.createElement('ruby'), |
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rt = document.createElement('rt'), |
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rp = document.createElement('rp'), |
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docElement = document.documentElement, |
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displayStyleProperty = 'display'; |
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ruby.appendChild(rp); |
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ruby.appendChild(rt); |
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docElement.appendChild(ruby); |
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|
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// browsers that support <ruby> hide the <rp> via "display:none" |
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rubies = ( getStyle(rp, displayStyleProperty) == 'none' || |
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// but in IE browsers <rp> has "display:inline" so, the test needs other conditions: |
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getStyle(ruby, displayStyleProperty) == 'ruby' |
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&& getStyle(rt, displayStyleProperty) == 'ruby-text' ) ? true : false; |
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docElement.removeChild(ruby); |
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// the removed child node still exists in memory, so ... |
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ruby = null; |
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rt = null; |
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rp = null; |
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|
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return rubies; |
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|
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function getStyle( element, styleProperty ) { |
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var result; |
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|
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if ( window.getComputedStyle ) // for non-IE browsers |
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result = document.defaultView.getComputedStyle(element,null).getPropertyValue(styleProperty); |
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else if ( element.currentStyle ) // for IE |
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result = element.currentStyle[styleProperty]; |
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return result; |
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} |
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}; |
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|
|
tests['textemphasis'] = function() { |
|
var em = $('<span style="display: none; text-emphasis: dot; -moz-text-emphasis: dot; -ms-text-emphasis: dot; -webkit-text-emphasis: dot;">tester</span>'), |
|
|
|
bool = ( /^dot$/.test( em.css("-webkit-text-emphasis-style") ) || |
|
/^dot$/.test( em.css("text-emphasis-style") ) || |
|
/^dot$/.test( em.css("-moz-text-emphasis-style") ) || |
|
/^dot$/.test( em.css("-ms-text-emphasis-style") ) ) ? true : false; |
|
|
|
return bool; |
|
}; |
|
|
|
|
|
tests['quotes'] = function() { |
|
var q = $('<q style="display: none; quotes: \'“\' \'”\' \'‘\' \'’\'">tester</q>'), |
|
|
|
bool = /^"“" "”" "‘" "’"$/.test( q.css("quotes") ); |
|
|
|
return bool; |
|
}; |
|
|
|
|
|
tests['writingmode'] = function() { |
|
var wm = $('<div style="display: none; writing-mode: tb-rl; -moz-writing-mode: tb-rl; -ms-writing-mode: tb-rl; -webkit-writing-mode: vertical-rl;">tester</div>'), |
|
|
|
bool = ( /^tb-rl$/.test( wm.css("writing-mode") ) || |
|
/^vertical-rl$/.test( wm.css("-webkit-writing-mode") ) || |
|
/^tb-rl$/.test( wm.css("-moz-writing-mode") ) || |
|
/^tb-rl$/.test( wm.css("-ms-writing-mode") ) ) ? true: false; |
|
|
|
return bool; |
|
}; |
|
|
|
|
|
|
|
|
|
|
|
$.fn.extend({ |
|
hanInit: function() { |
|
return init(this); |
|
}, |
|
|
|
|
|
bitouwei: function() { |
|
return this.each(function(){ |
|
$(this).addClass( 'han-js-bitouwei-rendered' ); |
|
|
|
var tou = unicode['biaodian'][0] + unicode['biaodian'][2], |
|
wei = unicode['biaodian'][1], |
|
start = unicode['punc'][0] + unicode['punc'][2], |
|
end = unicode['punc'][1]; |
|
|
|
tou = tou.replace(/\]\[/g, '' ); |
|
start = start.replace(/\]\[/g, '' ); |
|
|
|
|
|
// CJK characters |
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + wei + ')(' + unicode_set('hanzi') + ')(' + tou + ')/ig' ), |
|
wrap: _span( 'bitouwei bitouweidian' ) |
|
}); |
|
|
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + unicode_set('hanzi') + ')(' + tou + ')/ig' ), |
|
wrap: _span( 'bitouwei bitoudian' ) |
|
}); |
|
|
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + wei + ')(' + unicode_set('hanzi') + ')/ig' ), |
|
wrap: _span( 'bitouwei biweidian' ) |
|
}); |
|
|
|
|
|
// Latin letters |
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + end + ')(' + unicode_set('latin') + '+)(' + start + ')/ig' ), |
|
wrap: _span( 'bitouwei bitouweidian' ) |
|
}); |
|
|
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + unicode_set('latin') + '+)(' + start + ')/ig' ), |
|
wrap: _span( 'bitouwei bitoudian' ) |
|
}); |
|
|
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + end + ')(' + unicode_set('latin') + '+)/ig' ), |
|
wrap: _span( 'bitouwei biweidian' ) |
|
}); |
|
}); |
|
}, |
|
|
|
|
|
charize: function( glyph, charClass, innerSpan ){ |
|
var glyph = glyph || {}, |
|
charClass = (charClass == true) ? true : false; |
|
|
|
glyph = { |
|
cjk: glyph.cjk || 'individual', |
|
bitouwei: (glyph.bitouwei == false) ? false : true, |
|
latin: glyph.latin || 'group' |
|
}; |
|
|
|
return this.each(function(){ |
|
if ( glyph.bitouwei ) |
|
$(this).bitouwei(); |
|
|
|
|
|
// CJK characters |
|
if ( glyph.cjk === 'individual' ) |
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + unicode_set('hanzi') + ')/ig' ), |
|
wrap: _span( 'char cjk' ) |
|
}); |
|
|
|
|
|
if ( glyph.cjk === 'individual' || glyph.cjk === 'biaodian' ) |
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + unicode_set('biaodian') + ')/ig' ), |
|
wrap: _span( 'char cjk biaodian' ) |
|
}); |
|
|
|
|
|
if ( glyph.cjk === 'group' ) |
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + unicode_set('hanzi') + '+|' + unicode_set('biaodian') + '+)/ig' ), |
|
wrap: _span( 'char cjk' ) |
|
}); |
|
|
|
|
|
var latin_regex = ( glyph.latin === 'group' ) ? |
|
'/(' + unicode_set('latin') + '+)/ig' : |
|
'/(' + unicode_set('latin') + ')/ig'; |
|
|
|
findAndReplaceDOMText(this, { |
|
find: eval( latin_regex ), |
|
wrap: _span( 'char latin' ) |
|
}); |
|
|
|
|
|
findAndReplaceDOMText(this, { |
|
find: eval( '/(' + unicode_set('punc') + '+)/ig' ), |
|
wrap: _span( 'char latin punc' ) |
|
}); |
|
|
|
findAndReplaceDOMText(this, { |
|
find: /([\s]+)/ig, |
|
wrap: _span( 'char space' ) |
|
}); |
|
|
|
|
|
if ( innerSpan ) |
|
$(this).find('.char').each(function(){ |
|
$(this).html( |
|
$('<span>').text( $(this).text() ) |
|
); |
|
}); |
|
|
|
|
|
if ( charClass ) |
|
$(this).addClass('han-js-charized'); |
|
}); |
|
} |
|
}); |
|
|
|
|
|
|
|
// tests |
|
for ( var feature in tests ) { |
|
classes.push( ( tests[feature]() ? '' : 'no-' ) + feature ); |
|
|
|
if ( !tester ) |
|
var tester = ''; |
|
|
|
tester += ' ' + feature + ': tests[\'' + feature + '\'](),\n'; |
|
} |
|
|
|
!function(window) { |
|
eval("tester = ({\n" + tester.replace(/\n$/ig, |
|
'\nunicoderange: test_for_unicoderange, \nfont: test_for_fontface\n}') + ")"); |
|
}(); |
|
|
|
|
|
|
|
han(); |
|
|
|
window.han = { |
|
unicode: unicode_set, |
|
support: tester |
|
} |
|
|
|
})(jQuery); |
|
|
|
|
|
/** |
|
* findAndReplaceDOMText v 0.4.0 |
|
* @author James Padolsey http://james.padolsey.com |
|
* @license http://unlicense.org/UNLICENSE |
|
* |
|
* Matches the text of a DOM node against a regular expression |
|
* and replaces each match (or node-separated portions of the match) |
|
* in the specified element. |
|
*/ |
|
window.findAndReplaceDOMText = (function() { |
|
|
|
var PORTION_MODE_RETAIN = 'retain'; |
|
var PORTION_MODE_FIRST = 'first'; |
|
|
|
var doc = document; |
|
var toString = {}.toString; |
|
|
|
function isArray(a) { |
|
return toString.call(a) == '[object Array]'; |
|
} |
|
|
|
function escapeRegExp(s) { |
|
return String(s).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1'); |
|
} |
|
|
|
function exposed() { |
|
// Try deprecated arg signature first: |
|
return deprecated.apply(null, arguments) || findAndReplaceDOMText.apply(null, arguments); |
|
} |
|
|
|
function deprecated(regex, node, replacement, captureGroup, elFilter) { |
|
if ((node && !node.nodeType) && arguments.length <= 2) { |
|
return false; |
|
} |
|
var isReplacementFunction = typeof replacement == 'function'; |
|
|
|
if (isReplacementFunction) { |
|
replacement = (function(original) { |
|
return function(portion, match) { |
|
return original(portion.text, match.startIndex); |
|
}; |
|
}(replacement)); |
|
} |
|
|
|
// Awkward support for deprecated argument signature (<0.4.0) |
|
var instance = findAndReplaceDOMText(node, { |
|
|
|
find: regex, |
|
|
|
wrap: isReplacementFunction ? null : replacement, |
|
replace: isReplacementFunction ? replacement : '$' + (captureGroup || '&'), |
|
|
|
prepMatch: function(m, mi) { |
|
|
|
// Support captureGroup (a deprecated feature) |
|
|
|
if (!m[0]) throw 'findAndReplaceDOMText cannot handle zero-length matches'; |
|
|
|
if (captureGroup > 0) { |
|
var cg = m[captureGroup]; |
|
m.index += m[0].indexOf(cg); |
|
m[0] = cg; |
|
} |
|
|
|
m.endIndex = m.index + m[0].length; |
|
m.startIndex = m.index; |
|
m.index = mi; |
|
|
|
return m; |
|
}, |
|
filterElements: elFilter |
|
}); |
|
|
|
exposed.revert = function() { |
|
return instance.revert(); |
|
}; |
|
|
|
return true; |
|
} |
|
|
|
/** |
|
* findAndReplaceDOMText |
|
* |
|
* Locates matches and replaces with replacementNode |
|
* |
|
* @param {Node} node Element or Text node to search within |
|
* @param {RegExp} options.find The regular expression to match |
|
* @param {String|Element} [options.wrap] A NodeName, or a Node to clone |
|
* @param {String|Function} [options.replace='$&'] What to replace each match with |
|
* @param {Function} [options.filterElements] A Function to be called to check whether to |
|
* process an element. (returning true = process element, |
|
* returning false = avoid element) |
|
*/ |
|
function findAndReplaceDOMText(node, options) { |
|
return new Finder(node, options); |
|
} |
|
|
|
exposed.Finder = Finder; |
|
|
|
/** |
|
* Finder -- encapsulates logic to find and replace. |
|
*/ |
|
function Finder(node, options) { |
|
|
|
options.portionMode = options.portionMode || PORTION_MODE_RETAIN; |
|
|
|
this.node = node; |
|
this.options = options; |
|
|
|
// ENable match-preparation method to be passed as option: |
|
this.prepMatch = options.prepMatch || this.prepMatch; |
|
|
|
this.reverts = []; |
|
|
|
this.matches = this.search(); |
|
|
|
if (this.matches.length) { |
|
this.processMatches(); |
|
} |
|
|
|
} |
|
|
|
Finder.prototype = { |
|
|
|
/** |
|
* Searches for all matches that comply with the instance's 'match' option |
|
*/ |
|
search: function() { |
|
|
|
var match; |
|
var matchIndex = 0; |
|
var regex = this.options.find; |
|
var text = this.getAggregateText(); |
|
var matches = []; |
|
|
|
regex = typeof regex === 'string' ? RegExp(escapeRegExp(regex), 'g') : regex; |
|
|
|
if (regex.global) { |
|
while (match = regex.exec(text)) { |
|
matches.push(this.prepMatch(match, matchIndex++)); |
|
} |
|
} else { |
|
if (match = text.match(regex)) { |
|
matches.push(this.prepMatch(match, 0)); |
|
} |
|
} |
|
|
|
return matches; |
|
|
|
}, |
|
|
|
/** |
|
* Prepares a single match with useful meta info: |
|
*/ |
|
prepMatch: function(match, matchIndex) { |
|
|
|
if (!match[0]) { |
|
throw new Error('findAndReplaceDOMText cannot handle zero-length matches'); |
|
} |
|
|
|
match.endIndex = match.index + match[0].length; |
|
match.startIndex = match.index; |
|
match.index = matchIndex; |
|
|
|
return match; |
|
}, |
|
|
|
/** |
|
* Gets aggregate text within subject node |
|
*/ |
|
getAggregateText: function() { |
|
|
|
var elementFilter = this.options.filterElements; |
|
|
|
return getText(this.node); |
|
|
|
/** |
|
* Gets aggregate text of a node without resorting |
|
* to broken innerText/textContent |
|
*/ |
|
function getText(node) { |
|
|
|
if (node.nodeType === 3) { |
|
return node.data; |
|
} |
|
|
|
if (elementFilter && !elementFilter(node)) { |
|
return ''; |
|
} |
|
|
|
var txt = ''; |
|
|
|
if (node = node.firstChild) do { |
|
txt += getText(node); |
|
} while (node = node.nextSibling); |
|
|
|
return txt; |
|
|
|
} |
|
|
|
}, |
|
|
|
/** |
|
* Steps through the target node, looking for matches, and |
|
* calling replaceFn when a match is found. |
|
*/ |
|
processMatches: function() { |
|
|
|
var matches = this.matches; |
|
var node = this.node; |
|
var elementFilter = this.options.filterElements; |
|
|
|
var startPortion, |
|
endPortion, |
|
innerPortions = [], |
|
curNode = node, |
|
match = matches.shift(), |
|
atIndex = 0, // i.e. nodeAtIndex |
|
matchIndex = 0, |
|
portionIndex = 0, |
|
doAvoidNode; |
|
|
|
out: while (true) { |
|
|
|
if (curNode.nodeType === 3) { |
|
|
|
if (!endPortion && curNode.length + atIndex >= match.endIndex) { |
|
|
|
// We've found the ending |
|
endPortion = { |
|
node: curNode, |
|
index: portionIndex++, |
|
text: curNode.data.substring(match.startIndex - atIndex, match.endIndex - atIndex), |
|
indexInMatch: atIndex - match.startIndex, |
|
indexInNode: match.startIndex - atIndex, // always zero for end-portions |
|
endIndexInNode: match.endIndex - atIndex, |
|
isEnd: true |
|
}; |
|
|
|
} else if (startPortion) { |
|
// Intersecting node |
|
innerPortions.push({ |
|
node: curNode, |
|
index: portionIndex++, |
|
text: curNode.data, |
|
indexInMatch: atIndex - match.startIndex, |
|
indexInNode: 0 // always zero for inner-portions |
|
}); |
|
} |
|
|
|
if (!startPortion && curNode.length + atIndex > match.startIndex) { |
|
// We've found the match start |
|
startPortion = { |
|
node: curNode, |
|
index: portionIndex++, |
|
indexInMatch: 0, |
|
indexInNode: match.startIndex - atIndex, |
|
endIndexInNode: match.endIndex - atIndex, |
|
text: curNode.data.substring(match.startIndex - atIndex, match.endIndex - atIndex) |
|
}; |
|
} |
|
|
|
atIndex += curNode.data.length; |
|
|
|
} |
|
|
|
doAvoidNode = curNode.nodeType === 1 && elementFilter && !elementFilter(curNode); |
|
|
|
if (startPortion && endPortion) { |
|
|
|
curNode = this.replaceMatch(match, startPortion, innerPortions, endPortion); |
|
|
|
// processMatches has to return the node that replaced the endNode |
|
// and then we step back so we can continue from the end of the |
|
// match: |
|
|
|
atIndex -= (endPortion.node.data.length - endPortion.endIndexInNode); |
|
|
|
startPortion = null; |
|
endPortion = null; |
|
innerPortions = []; |
|
match = matches.shift(); |
|
portionIndex = 0; |
|
matchIndex++; |
|
|
|
if (!match) { |
|
break; // no more matches |
|
} |
|
|
|
} else if ( |
|
!doAvoidNode && |
|
(curNode.firstChild || curNode.nextSibling) |
|
) { |
|
// Move down or forward: |
|
curNode = curNode.firstChild || curNode.nextSibling; |
|
continue; |
|
} |
|
|
|
// Move forward or up: |
|
while (true) { |
|
if (curNode.nextSibling) { |
|
curNode = curNode.nextSibling; |
|
break; |
|
} else if (curNode.parentNode !== node) { |
|
curNode = curNode.parentNode; |
|
} else { |
|
break out; |
|
} |
|
} |
|
|
|
} |
|
|
|
}, |
|
|
|
/** |
|
* Reverts ... TODO |
|
*/ |
|
revert: function() { |
|
// Reversion occurs backwards so as to avoid nodes subsequently |
|
// replaced during the matching phase (a forward process): |
|
for (var l = this.reverts.length; l--;) { |
|
this.reverts[l](); |
|
} |
|
this.reverts = []; |
|
}, |
|
|
|
prepareReplacementString: function(string, portion, match, matchIndex) { |
|
var portionMode = this.options.portionMode; |
|
if ( |
|
portionMode === PORTION_MODE_FIRST && |
|
portion.indexInMatch > 0 |
|
) { |
|
return ''; |
|
} |
|
string = string.replace(/\$(\d+|&|`|')/g, function($0, t) { |
|
var replacement; |
|
switch(t) { |
|
case '&': |
|
replacement = match[0]; |
|
break; |
|
case '`': |
|
replacement = match.input.substring(0, match.startIndex); |
|
break; |
|
case '\'': |
|
replacement = match.input.substring(match.endIndex); |
|
break; |
|
default: |
|
replacement = match[+t]; |
|
} |
|
return replacement; |
|
}); |
|
|
|
if (portionMode === PORTION_MODE_FIRST) { |
|
return string; |
|
} |
|
|
|
if (portion.isEnd) { |
|
return string.substring(portion.indexInMatch); |
|
} |
|
|
|
return string.substring(portion.indexInMatch, portion.indexInMatch + portion.text.length); |
|
}, |
|
|
|
getPortionReplacementNode: function(portion, match, matchIndex) { |
|
|
|
var replacement = this.options.replace || '$&'; |
|
var wrapper = this.options.wrap; |
|
|
|
if (wrapper && wrapper.nodeType) { |
|
// Wrapper has been provided as a stencil-node for us to clone: |
|
var clone = doc.createElement('div'); |
|
clone.innerHTML = wrapper.outerHTML || new XMLSerializer().serializeToString(wrapper); |
|
wrapper = clone.firstChild; |
|
} |
|
|
|
if (typeof replacement == 'function') { |
|
replacement = replacement(portion, match, matchIndex); |
|
if (replacement && replacement.nodeType) { |
|
return replacement; |
|
} |
|
return doc.createTextNode(String(replacement)); |
|
} |
|
|
|
var el = typeof wrapper == 'string' ? doc.createElement(wrapper) : wrapper; |
|
|
|
replacement = doc.createTextNode( |
|
this.prepareReplacementString( |
|
replacement, portion, match, matchIndex |
|
) |
|
); |
|
|
|
if (!el) { |
|
return replacement; |
|
} |
|
|
|
el.appendChild(replacement); |
|
|
|
return el; |
|
}, |
|
|
|
replaceMatch: function(match, startPortion, innerPortions, endPortion) { |
|
|
|
var matchStartNode = startPortion.node; |
|
var matchEndNode = endPortion.node; |
|
|
|
var preceedingTextNode; |
|
var followingTextNode; |
|
|
|
if (matchStartNode === matchEndNode) { |
|
|
|
var node = matchStartNode; |
|
|
|
if (startPortion.indexInNode > 0) { |
|
// Add `before` text node (before the match) |
|
preceedingTextNode = doc.createTextNode(node.data.substring(0, startPortion.indexInNode)); |
|
node.parentNode.insertBefore(preceedingTextNode, node); |
|
} |
|
|
|
// Create the replacement node: |
|
var newNode = this.getPortionReplacementNode( |
|
endPortion, |
|
match |
|
); |
|
|
|
node.parentNode.insertBefore(newNode, node); |
|
|
|
if (endPortion.endIndexInNode < node.length) { // ????? |
|
// Add `after` text node (after the match) |
|
followingTextNode = doc.createTextNode(node.data.substring(endPortion.endIndexInNode)); |
|
node.parentNode.insertBefore(followingTextNode, node); |
|
} |
|
|
|
node.parentNode.removeChild(node); |
|
|
|
this.reverts.push(function() { |
|
if (preceedingTextNode === newNode.previousSibling) { |
|
preceedingTextNode.parentNode.removeChild(preceedingTextNode); |
|
} |
|
if (followingTextNode === newNode.nextSibling) { |
|
followingTextNode.parentNode.removeChild(followingTextNode); |
|
} |
|
newNode.parentNode.replaceChild(node, newNode); |
|
}); |
|
|
|
return newNode; |
|
|
|
} else { |
|
// Replace matchStartNode -> [innerMatchNodes...] -> matchEndNode (in that order) |
|
|
|
|
|
preceedingTextNode = doc.createTextNode( |
|
matchStartNode.data.substring(0, startPortion.indexInNode) |
|
); |
|
|
|
followingTextNode = doc.createTextNode( |
|
matchEndNode.data.substring(endPortion.endIndexInNode) |
|
); |
|
|
|
var firstNode = this.getPortionReplacementNode( |
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startPortion, |
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match |
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); |
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var innerNodes = []; |
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for (var i = 0, l = innerPortions.length; i < l; ++i) { |
|
var portion = innerPortions[i]; |
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var innerNode = this.getPortionReplacementNode( |
|
portion, |
|
match |
|
); |
|
portion.node.parentNode.replaceChild(innerNode, portion.node); |
|
this.reverts.push((function(portion, innerNode) { |
|
return function() { |
|
innerNode.parentNode.replaceChild(portion.node, innerNode); |
|
}; |
|
}(portion, innerNode))); |
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innerNodes.push(innerNode); |
|
} |
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|
var lastNode = this.getPortionReplacementNode( |
|
endPortion, |
|
match |
|
); |
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|
|
matchStartNode.parentNode.insertBefore(preceedingTextNode, matchStartNode); |
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matchStartNode.parentNode.insertBefore(firstNode, matchStartNode); |
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matchStartNode.parentNode.removeChild(matchStartNode); |
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|
|
matchEndNode.parentNode.insertBefore(lastNode, matchEndNode); |
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matchEndNode.parentNode.insertBefore(followingTextNode, matchEndNode); |
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matchEndNode.parentNode.removeChild(matchEndNode); |
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|
|
this.reverts.push(function() { |
|
preceedingTextNode.parentNode.removeChild(preceedingTextNode); |
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firstNode.parentNode.replaceChild(matchStartNode, firstNode); |
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followingTextNode.parentNode.removeChild(followingTextNode); |
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lastNode.parentNode.replaceChild(matchEndNode, lastNode); |
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}); |
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|
return lastNode; |
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} |
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} |
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}; |
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return exposed; |
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|
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}()); |
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