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June 17, 2016 10:36
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minecraft text formatting
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| <textarea id="input"> | |
| §nMinecraft Formatting | |
| §r§00 §11 §22 §33 | |
| §44 §55 §66 §77 | |
| §88 §99 §aa §bb | |
| §cc §dd §ee §ff | |
| §r§0k §kMinecraft | |
| §rl §lMinecraft | |
| §rm §mMinecraft | |
| §rn §nMinecraft | |
| §ro §oMinecraft | |
| §rr §rMinecraft | |
| </textarea> | |
| <div id="output" style="white-space: pre;"></div> | |
| <script src="https://cdn.rawgit.com/tc39/proposal-string-pad-start-end/master/polyfill.js"></script> | |
| <script src="script.js"></script> | |
| </body> | |
| </html> |
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| const tokenStart = '§'; | |
| class Token { | |
| constructor(text, type) { | |
| this.text = text; | |
| this.type = type; | |
| } | |
| } | |
| function parse(text) { | |
| const tokens = []; | |
| const { length } = text; | |
| let i = 0; | |
| while(i < length) { | |
| const char = text[i]; | |
| if(char === tokenStart) { | |
| const start = i; | |
| const type = text[++i]; | |
| while(text[i] !== tokenStart && i < length) { | |
| i++; | |
| } | |
| tokens.push(new Token(text.slice(start + 2, i), type)); | |
| } else { | |
| const start = i; | |
| while(text[i] !== tokenStart && i < length) { | |
| i++; | |
| } | |
| tokens.push(new Token(text.slice(start, i), null)); | |
| } | |
| } | |
| return tokens; | |
| } | |
| function render(tokens, outputElement) { | |
| outputElement.innerHTML = ''; | |
| function createAndAttachElement(text, tag) { | |
| const element = document.createElement(tag); | |
| element.textContent = text; | |
| outputElement.appendChild(element); | |
| } | |
| const { length } = tokens; | |
| for(let i = 0; i < length; i++) { | |
| const token = tokens[i]; | |
| let { text, type } = token; | |
| switch (type) { | |
| case 'k': | |
| // obfuscate | |
| break; | |
| case 'l': | |
| // bold | |
| createAndAttachElement(text, 'strong'); | |
| break; | |
| case 'm': | |
| createAndAttachElement(text, 's'); | |
| break; | |
| case 'n': | |
| createAndAttachElement(text, 'u'); | |
| break; | |
| case 'o': | |
| createAndAttachElement(text, 'i'); | |
| break; | |
| case 'r': | |
| createAndAttachElement(text, 'span'); | |
| break; | |
| default: | |
| createAndAttachElement(text, 'span'); | |
| break; | |
| } | |
| } | |
| } | |
| const inputElement = document.getElementById('input'); | |
| inputElement.addEventListener('input', () => { | |
| render(parse(inputElement.value), document.getElementById('output')); | |
| }); | |
| inputElement.dispatchEvent(new CustomEvent('input')); | |
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