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(function() {
if (typeof self === 'undefined' || !self.Prism || !self.document) {
return;
}
var clsReg = /\s*\bcommand-line\b\s*/;
Prism.hooks.add('before-highlight', function (env) {
env.vars = env.vars || {};
env.vars['command-line'] = env.vars['command-line'] || {};
if (env.vars['command-line'].complete || !env.code) {
env.vars['command-line'].complete = true;
return;
}
// Works only for <code> wrapped inside <pre> (not inline).
var pre = env.element.parentNode;
if (!pre || !/pre/i.test(pre.nodeName) || // Abort only if neither the <pre> nor the <code> have the class
(!clsReg.test(pre.className) && !clsReg.test(env.element.className))) {
env.vars['command-line'].complete = true;
return;
}
if (env.element.querySelector('.command-line-prompt')) { // Abort if prompt already exists.
env.vars['command-line'].complete = true;
return;
}
var codeLines = env.code.split('\n');
env.vars['command-line'].numberOfLines = codeLines.length;
env.vars['command-line'].outputLines = [];
var outputSections = pre.getAttribute('data-output');
var outputFilter = pre.getAttribute('data-filter-output');
if (outputSections || outputSections === '') { // The user specified the output lines. -- cwells
outputSections = outputSections.split(',');
for (var i = 0; i < outputSections.length; i++) { // Parse the output sections into start/end ranges. -- cwells
var range = outputSections[i].split('-');
var outputStart = parseInt(range[0], 10);
var outputEnd = (range.length === 2 ? parseInt(range[1], 10) : outputStart);
if (!isNaN(outputStart) && !isNaN(outputEnd)) {
if (outputStart < 1) {
outputStart = 1;
}
if (outputEnd > codeLines.length) {
outputEnd = codeLines.length;
}
// Convert start and end to 0-based to simplify the arrays. -- cwells
outputStart--;
outputEnd--;
// Save the output line in an array and clear it in the code so it's not highlighted. -- cwells
for (var j = outputStart; j <= outputEnd; j++) {
env.vars['command-line'].outputLines[j] = codeLines[j];
codeLines[j] = '';
}
}
}
} else if (outputFilter) { // Treat lines beginning with this string as output. -- cwells
for (var i = 0; i < codeLines.length; i++) {
if (codeLines[i].indexOf(outputFilter) === 0) { // This line is output. -- cwells
env.vars['command-line'].outputLines[i] = codeLines[i].slice(outputFilter.length);
codeLines[i] = '';
}
}
}
env.code = codeLines.join('\n');
});
Prism.hooks.add('before-insert', function (env) {
env.vars = env.vars || {};
env.vars['command-line'] = env.vars['command-line'] || {};
if (env.vars['command-line'].complete) {
return;
}
// Reinsert the output lines into the highlighted code. -- cwells
var codeLines = env.highlightedCode.split('\n');
for (var i = 0; i < env.vars['command-line'].outputLines.length; i++) {
if (env.vars['command-line'].outputLines.hasOwnProperty(i)) {
codeLines[i] = env.vars['command-line'].outputLines[i];
}
}
env.highlightedCode = codeLines.join('\n');
});
Prism.hooks.add('complete', function (env) {
env.vars = env.vars || {};
env.vars['command-line'] = env.vars['command-line'] || {};
if (env.vars['command-line'].complete) {
return;
}
var pre = env.element.parentNode;
if (clsReg.test(env.element.className)) { // Remove the class "command-line" from the <code>
env.element.className = env.element.className.replace(clsReg, ' ');
}
if (!clsReg.test(pre.className)) { // Add the class "command-line" to the <pre>
pre.className += ' command-line';
}
var getAttribute = function(key, defaultValue) {
return (pre.getAttribute(key) || defaultValue).replace(/"/g, '"');
};
// Create the "rows" that will become the command-line prompts. -- cwells
var promptLines = new Array(env.vars['command-line'].numberOfLines + 1);
var promptText = getAttribute('data-prompt', '');
if (promptText !== '') {
promptLines = promptLines.join('<span data-prompt="' + promptText + '"></span>');
} else {
var user = getAttribute('data-user', 'user');
var host = getAttribute('data-host', 'localhost');
promptLines = promptLines.join('<span data-user="' + user + '" data-host="' + host + '"></span>');
}
// Create the wrapper element. -- cwells
var prompt = document.createElement('span');
prompt.className = 'command-line-prompt';
prompt.innerHTML = promptLines;
// Remove the prompt from the output lines. -- cwells
for (var i = 0; i < env.vars['command-line'].outputLines.length; i++) {
if (env.vars['command-line'].outputLines.hasOwnProperty(i)) {
var node = prompt.children[i];
node.removeAttribute('data-user');
node.removeAttribute('data-host');
node.removeAttribute('data-prompt');
}
}
env.element.insertBefore(prompt, env.element.firstChild);
env.vars['command-line'].complete = true;
});
}());
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