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tables.js
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tables.js
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showdown.subParser('tables', function (text, options, globals) {
'use strict';
if (!options.tables) {
return text;
}
var tableRgx = /^ {0,3}\|?.+\|.+\n[ \t]{0,3}\|?[ \t]*:?[ \t]*(?:-|=){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:-|=){2,}[\s\S]+?(?:\n\n|¨0)/gm;
function parseStyles (sLine) {
if (/^:[ \t]*--*$/.test(sLine)) {
return ' style="text-align:left;"';
} else if (/^--*[ \t]*:[ \t]*$/.test(sLine)) {
return ' style="text-align:right;"';
} else if (/^:[ \t]*--*[ \t]*:$/.test(sLine)) {
return ' style="text-align:center;"';
} else {
return '';
}
}
function parseHeaders (header, style) {
var id = '';
header = header.trim();
// support both tablesHeaderId and tableHeaderId due to error in documention so we don't break backwards compatibility
if (options.tablesHeaderId || options.tableHeaderId) {
id = ' id="' + header.replace(/ /g, '_').toLowerCase() + '"';
}
header = showdown.subParser('spanGamut')(header, options, globals);
return '<th' + id + style + '>' + header + '</th>\n';
}
function parseCells (cell, style) {
var subText = showdown.subParser('spanGamut')(cell, options, globals);
return '<td' + style + '>' + subText + '</td>\n';
}
function buildTable (headers, cells) {
var tb = '<table>\n<thead>\n<tr>\n',
tblLgn = headers.length;
for (var i = 0; i < tblLgn; ++i) {
tb += headers[i];
}
tb += '</tr>\n</thead>\n<tbody>\n';
for (i = 0; i < cells.length; ++i) {
tb += '<tr>\n';
for (var ii = 0; ii < tblLgn; ++ii) {
tb += cells[i][ii];
}
tb += '</tr>\n';
}
tb += '</tbody>\n</table>\n';
return tb;
}
text = globals.converter._dispatch('tables.before', text, options, globals);
// find escaped pipe characters
text = text.replace(/\\(\|)/g, showdown.helper.escapeCharactersCallback);
// parse tables
text = text.replace(tableRgx, function (rawTable) {
var i, tableLines = rawTable.split('\n');
// strip wrong first and last column if wrapped tables are used
for (i = 0; i < tableLines.length; ++i) {
if (/^ {0,3}\|/.test(tableLines[i])) {
tableLines[i] = tableLines[i].replace(/^ {0,3}\|/, '');
}
if (/\|[ \t]*$/.test(tableLines[i])) {
tableLines[i] = tableLines[i].replace(/\|[ \t]*$/, '');
}
}
var rawHeaders = tableLines[0].split('|').map(function (s) { return s.trim();}),
rawStyles = tableLines[1].split('|').map(function (s) { return s.trim();}),
rawCells = [],
headers = [],
styles = [],
cells = [];
tableLines.shift();
tableLines.shift();
for (i = 0; i < tableLines.length; ++i) {
if (tableLines[i].trim() === '') {
continue;
}
rawCells.push(
tableLines[i]
.split('|')
.map(function (s) {
return s.trim();
})
);
}
if (rawHeaders.length < rawStyles.length) {
return rawTable;
}
for (i = 0; i < rawStyles.length; ++i) {
styles.push(parseStyles(rawStyles[i]));
}
for (i = 0; i < rawHeaders.length; ++i) {
if (showdown.helper.isUndefined(styles[i])) {
styles[i] = '';
}
headers.push(parseHeaders(rawHeaders[i], styles[i]));
}
for (i = 0; i < rawCells.length; ++i) {
var row = [];
for (var ii = 0; ii < headers.length; ++ii) {
if (showdown.helper.isUndefined(rawCells[i][ii])) {
}
row.push(parseCells(rawCells[i][ii], styles[ii]));
}
cells.push(row);
}
return buildTable(headers, cells);
});
text = globals.converter._dispatch('tables.after', text, options, globals);
return text;
});