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Command Line: Some refactoring (#2290)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,140 +1,182 @@ | ||
| (function() { | ||
| (function () { | ||
|
|
||
| if (typeof self === 'undefined' || !self.Prism || !self.document) { | ||
| return; | ||
| } | ||
|
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| var clsReg = /(?:^|\s)command-line(?:\s|$)/; | ||
|
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| Prism.hooks.add('before-highlight', function (env) { | ||
| var vars = env.vars = env.vars || {}; | ||
| var commandLine = vars['command-line'] = vars['command-line'] || {}; | ||
|
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| if (commandLine.complete || !env.code) { | ||
| commandLine.complete = true; | ||
| if (typeof self === 'undefined' || !self.Prism || !self.document) { | ||
| return; | ||
| } | ||
|
|
||
| // Works only for <code> wrapped inside <pre> (not inline). | ||
| var pre = env.element.parentNode; | ||
| if (!pre || !/pre/i.test(pre.nodeName) || // Abort only if neither the <pre> nor the <code> have the class | ||
| (!clsReg.test(pre.className) && !clsReg.test(env.element.className))) { | ||
| commandLine.complete = true; | ||
| return; | ||
| var CLASS_PATTERN = /(?:^|\s)command-line(?:\s|$)/; | ||
| 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; | ||
| } | ||
|
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| // The element might be highlighted multiple times, so we just remove the previous prompt | ||
| var existingPrompt = env.element.querySelector('.command-line-prompt'); | ||
| if (existingPrompt) { | ||
| existingPrompt.remove(); | ||
| /** | ||
| * 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'] || {}; | ||
| } | ||
|
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| var codeLines = env.code.split('\n'); | ||
| commandLine.numberOfLines = codeLines.length; | ||
| var outputLines = commandLine.outputLines = []; | ||
|
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| 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); | ||
|
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| if (!isNaN(outputStart) && !isNaN(outputEnd)) { | ||
| if (outputStart < 1) { | ||
| outputStart = 1; | ||
| } | ||
| if (outputEnd > codeLines.length) { | ||
| outputEnd = codeLines.length; | ||
|
|
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| 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; | ||
|
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| 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] = ''; | ||
| } | ||
| } | ||
| // 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] = ''; | ||
| } | ||
| } | ||
| } | ||
| } 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 | ||
| outputLines[i] = codeLines[i].slice(outputFilter.length); | ||
| codeLines[i] = ''; | ||
| } | ||
|
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| env.code = codeLines.join('\n'); | ||
| }); | ||
|
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| Prism.hooks.add('before-insert', function (env) { | ||
| var commandLine = getCommandLineInfo(env); | ||
|
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| if (commandLine.complete) { | ||
| return; | ||
| } | ||
| } | ||
|
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| env.code = codeLines.join('\n'); | ||
| }); | ||
| // 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'); | ||
| }); | ||
|
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||
| Prism.hooks.add('before-insert', function (env) { | ||
| var vars = env.vars = env.vars || {}; | ||
| var commandLine = vars['command-line'] = vars['command-line'] || {}; | ||
| if (commandLine.complete) { | ||
| return; | ||
| } | ||
| Prism.hooks.add('complete', function (env) { | ||
| var commandLine = getCommandLineInfo(env); | ||
|
|
||
| // Reinsert the output lines into the highlighted code. -- cwells | ||
| var codeLines = env.highlightedCode.split('\n'); | ||
| for (var i = 0, l = (commandLine.outputLines || []).length; i < l; i++) { | ||
| if (commandLine.outputLines.hasOwnProperty(i)) { | ||
| codeLines[i] = commandLine.outputLines[i]; | ||
| if (commandLine.complete) { | ||
| return; | ||
| } | ||
| } | ||
| env.highlightedCode = codeLines.join('\n'); | ||
| }); | ||
|
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| Prism.hooks.add('complete', function (env) { | ||
| var vars = env.vars = env.vars || {}; | ||
| var commandLine = vars['command-line'] = vars['command-line'] || {}; | ||
| 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'; | ||
| } | ||
|
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||
| 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'; | ||
| } | ||
| function getAttribute(key, defaultValue) { | ||
| return (pre.getAttribute(key) || defaultValue).replace(/"/g, '"'); | ||
| } | ||
|
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| var getAttribute = function(key, defaultValue) { | ||
| return (pre.getAttribute(key) || defaultValue).replace(/"/g, '"'); | ||
| }; | ||
|
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| // Create the "rows" that will become the command-line prompts. -- cwells | ||
| var promptLines = new Array((commandLine.numberOfLines || 0) + 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 "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 = 'command-line-prompt'; | ||
| prompt.innerHTML = promptLines; | ||
|
|
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| // Remove the prompt from the output lines. -- cwells | ||
| for (var i = 0, l = (commandLine.outputLines || []).length; i < l; i++) { | ||
| if (commandLine.outputLines.hasOwnProperty(i)) { | ||
| var node = prompt.children[i]; | ||
| node.removeAttribute('data-user'); | ||
| node.removeAttribute('data-host'); | ||
| node.removeAttribute('data-prompt'); | ||
| // Create the wrapper element. -- cwells | ||
| var prompt = document.createElement('span'); | ||
| prompt.className = PROMPT_CLASS; | ||
| prompt.innerHTML = promptLines; | ||
|
|
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| // 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'); | ||
| } | ||
| } | ||
| } | ||
|
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| env.element.insertBefore(prompt, env.element.firstChild); | ||
| commandLine.complete = true; | ||
| }); | ||
| env.element.insertBefore(prompt, env.element.firstChild); | ||
| commandLine.complete = true; | ||
| }); | ||
|
|
||
| }()); |
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