Hash :
8c9c2896
Author :
Date :
2020-06-27T20:46:04
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182
(function () {
if (typeof self === 'undefined' || !self.Prism || !self.document) {
return;
}
var CLASS_PATTERN = /(?:^|\s)command-line(?:\s|$)/;
var PROMPT_CLASS = 'command-line-prompt';
/** @type {(str: string, prefix: string) => boolean} */
var startsWith = "".startsWith
? function (s, p) { return s.startsWith(p); }
: function (s, p) { return s.indexOf(p) === 0; };
/**
* Repeats the given string some number of times.
*
* This is just a polyfill for `String.prototype.repeat`.
*
* @param {string} str
* @param {number} times
* @returns {string}
*/
function repeat(str, times) {
var s = "";
for (var i = 0; i < times; i++) {
s += str;
}
return s;
}
/**
* Returns the command line info object from the given hook environment.
*
* @param {any} env
* @returns {CommandLineInfo}
*
* @typedef CommandLineInfo
* @property {boolean} [complete]
* @property {number} [numberOfLines]
* @property {string[]} [outputLines]
*/
function getCommandLineInfo(env) {
var vars = env.vars = env.vars || {};
return vars['command-line'] = vars['command-line'] || {};
}
Prism.hooks.add('before-highlight', function (env) {
var commandLine = getCommandLineInfo(env);
if (commandLine.complete || !env.code) {
commandLine.complete = true;
return;
}
// Works only for <code> wrapped inside <pre> (not inline).
var pre = env.element.parentElement;
if (!pre || !/pre/i.test(pre.nodeName) || // Abort only if neither the <pre> nor the <code> have the class
(!CLASS_PATTERN.test(pre.className) && !CLASS_PATTERN.test(env.element.className))) {
commandLine.complete = true;
return;
}
// The element might be highlighted multiple times, so we just remove the previous prompt
var existingPrompt = env.element.querySelector('.' + PROMPT_CLASS);
if (existingPrompt) {
existingPrompt.remove();
}
var codeLines = env.code.split('\n');
commandLine.numberOfLines = codeLines.length;
/** @type {string[]} */
var outputLines = commandLine.outputLines = [];
var outputSections = pre.getAttribute('data-output');
var outputFilter = pre.getAttribute('data-filter-output');
if (outputSections !== null) { // The user specified the output lines. -- cwells
outputSections.split(',').forEach(function (section) {
var range = section.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++) {
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 (startsWith(codeLines[i], outputFilter)) { // This line is output. -- cwells
outputLines[i] = codeLines[i].slice(outputFilter.length);
codeLines[i] = '';
}
}
}
env.code = codeLines.join('\n');
});
Prism.hooks.add('before-insert', function (env) {
var commandLine = getCommandLineInfo(env);
if (commandLine.complete) {
return;
}
// Reinsert the output lines into the highlighted code. -- cwells
var codeLines = env.highlightedCode.split('\n');
var outputLines = commandLine.outputLines || [];
for (var i = 0, l = outputLines.length; i < l; i++) {
if (outputLines.hasOwnProperty(i)) {
codeLines[i] = outputLines[i];
}
}
env.highlightedCode = codeLines.join('\n');
});
Prism.hooks.add('complete', function (env) {
var commandLine = getCommandLineInfo(env);
if (commandLine.complete) {
return;
}
var pre = env.element.parentElement;
if (CLASS_PATTERN.test(env.element.className)) { // Remove the class "command-line" from the <code>
env.element.className = env.element.className.replace(CLASS_PATTERN, ' ');
}
if (!CLASS_PATTERN.test(pre.className)) { // Add the class "command-line" to the <pre>
pre.className += ' command-line';
}
function getAttribute(key, defaultValue) {
return (pre.getAttribute(key) || defaultValue).replace(/"/g, '"');
}
// Create the "rows" that will become the command-line prompts. -- cwells
var promptLines;
var rowCount = commandLine.numberOfLines || 0;
var promptText = getAttribute('data-prompt', '');
if (promptText !== '') {
promptLines = repeat('<span data-prompt="' + promptText + '"></span>', rowCount);
} else {
var user = getAttribute('data-user', 'user');
var host = getAttribute('data-host', 'localhost');
promptLines = repeat('<span data-user="' + user + '" data-host="' + host + '"></span>', rowCount);
}
// Create the wrapper element. -- cwells
var prompt = document.createElement('span');
prompt.className = PROMPT_CLASS;
prompt.innerHTML = promptLines;
// Remove the prompt from the output lines. -- cwells
var outputLines = commandLine.outputLines || [];
for (var i = 0, l = outputLines.length; i < l; i++) {
if (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);
commandLine.complete = true;
});
}());