119 lines
No EOL
4 KiB
JavaScript
119 lines
No EOL
4 KiB
JavaScript
// vim: et:ts=4:sw=4:sts=4:ft=js
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/*@
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@*/
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Ox.SyntaxHighlighter = function(options, self) {
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self = self || {};
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var that = new Ox.Element({}, self)
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.defaults({
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height: 40,
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lineLength: 80, //@ number of characters per line
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offset: 1, //@ first line number
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showLinebreaks: false, //@ show linebreak symbols
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showTabs: false, //@ show tab symbols
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showWhitespace: false, //@ show irregular leading or trailing whitespace
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source: '', //@ JavaScript source
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stripComments: false, //@ strip all comments
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stripLinebreaks: false, //@ strip multiple linebreaks, NOT IMPLEMENTED
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stripWhitespace: false, //@ strip all whitespace, NOT IMPLEMENTED
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tabLength: 4, //@ number of spaces per tab
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width: 80
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})
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.options(options || {})
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.addClass('OxSyntaxHighlighter');
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self.options.source = self.options.source
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.replace(/\r\n/g, '\n')
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.replace(/\r/g, '\n');
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self.cursor = 0;
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self.source = '';
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self.tokens = Ox.tokenize(self.options.source);
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self.tokens.forEach(function(token, i) {
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var classNames,
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source = self.options.source.substr(token.offset, token.length);
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if (
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!(self.options.stripComments && token.type == 'comment')
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) {
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classNames = 'Ox' + Ox.toTitleCase(token.type);
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if (self.options.showWhitespace && token.type == 'whitespace') {
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if (isAfterLinebreak() && hasIrregularSpaces()) {
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classNames += ' OxLeading'
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} else if (isBeforeLinebreak()) {
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classNames += ' OxTrailing'
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}
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}
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self.source += '<span class="' + classNames + '">' +
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encodeToken(source, token.type) + '</span>';
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}
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self.cursor += token.length;
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function isAfterLinebreak() {
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return i == 0 ||
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self.tokens[i - 1].type == 'linebreak';
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}
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function isBeforeLinebreak() {
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return i == self.tokens.length - 1 ||
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self.tokens[i + 1].type == 'linebreak';
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}
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function hasIrregularSpaces() {
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return source.split('').reduce(function(prev, curr) {
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return prev + (curr == ' ' ? 1 : 0);
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}, 0) % self.options.tabLength;
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}
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});
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self.lines = self.source.split('<br/>');
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self.lineNumbersWidth = (
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self.lines.length + self.options.offset - 1
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).toString().length * 7;
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self.$lineNumbers = new Ox.Element()
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.addClass('OxLineNumbers')
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.css({
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display: 'table-cell',
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width: self.lineNumbersWidth + 'px',
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padding: '4px',
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})
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.html(
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Ox.range(self.lines.length).map(function(line) {
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return (line + self.options.offset);
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}).join('<br/>')
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)
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.appendTo(that);
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self.$source = new Ox.Element()
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.addClass('OxSourceCode')
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.css({
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display: 'table-cell',
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padding: '4px'
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})
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.html(self.source)
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.appendTo(that);
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function encodeToken(source, token) {
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var linebreak = '<br/>',
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tab = Ox.repeat(' ', self.options.tabLength);
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if (self.options.showLinebreaks) {
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if (token.type == 'linebreak') {
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linebreak = '\u21A9' + linebreak;
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} else {
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linebreak = '<span class="OxLinebreak">\u21A9</span>' + linebreak;
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}
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}
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if (self.options.showTabs) {
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tab = '<span class="OxTab">\u2192' + tab.substr(6) + '</span>';
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}
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return Ox.encodeHTML(source)
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.replace(/ /g, ' ')
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.replace(/\t/g, tab)
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.replace(/\n/g, linebreak);
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}
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self.setOption = function() {
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};
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return that;
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}; |