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feat: add function: css2json

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添加CSS转JSON工具方法
This commit is contained in:
yanglbme 2019-12-05 21:12:13 +08:00
parent 93682dafae
commit d6932c0d4e
3 changed files with 83 additions and 245 deletions
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84
assets/scripts/util.js
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@ -1,6 +1,6 @@
// 设置自定义颜色
function setColorWithTemplate(template) {
return function(color) {
return function (color) {
let custom_theme = JSON.parse(JSON.stringify(template));
custom_theme.block.h1['border-bottom'] = `2px solid ${color}`;
custom_theme.block.h2['background'] = color;
@ -14,7 +14,7 @@ function setColorWithTemplate(template) {
let setColor = setColorWithTemplate(default_theme);
function customCssWithTemplate(template) {
return function(jsonString) {
return function (jsonString) {
let custom_theme = JSON.parse(JSON.stringify(template));
custom_theme.block.h1 = jsonString.h1;
custom_theme.block.h2 = jsonString.h2;
@ -26,3 +26,83 @@ function customCssWithTemplate(template) {
}
let customCss = customCssWithTemplate(default_theme);
// css转json
function css2json(css) {
// Remove all comments from the css-file
while ((open = css.indexOf("/*")) !== -1 &&
(close = css.indexOf("*/")) !== -1) {
css = css.substring(0, open) + css.substring(close + 2);
}
// Initialize the return value _json_.
let json = {};
// Each rule gets parsed and then removed from _css_ until all rules have been
// parsed.
while (css.length > 0) {
// Save the index of the first left bracket and first right bracket.
const lbracket = css.indexOf('{');
const rbracket = css.indexOf('}');
// ## Part 1: The declarations
//
// Transform the declarations to an object. For example, the declarations<br/>
// `font: 'Times New Roman' 1em; color: #ff0000; margin-top: 1em;`<br/>
// result in the object<br/>
// `{"font": "'Times New Roman' 1em", "color": "#ff0000", "margin-top": "1em"}`.
// Helper method that transform an array to a object, by splitting each
// declaration (_font: Arial_) into key (_font_) and value(_Arial_).
function toObject(array) {
let ret = {};
array.forEach(e => {
const index = e.indexOf(':');
const property = e.substring(0, index).trim();
const value = e.substring(index + 1).trim();
ret[property] = value;
});
return ret;
}
// Split the declaration block of the first rule into an array and remove
// whitespace from each declaration.
let declarations = css.substring(lbracket + 1, rbracket)
.split(";")
.map(e => e.trim())
.filter(e => e.length > 0); // Remove any empty ("") values from the array
// _declaration_ is now an array reado to be transformed into an object.
declarations = toObject(declarations);
// ## Part 2: The selectors
//
// Each selector in the selectors block will be associated with the
// declarations defined above. For example, `h1, p#bar {color: red}`<br/>
// result in the object<br/>
// {"h1": {color: red}, "p#bar": {color: red}}
// Split the selectors block of the first rule into an array and remove
// whitespace, e.g. `"h1, p#bar, span.foo"` get parsed to
// `["h1", "p#bar", "span.foo"]`.
let selectors = css.substring(0, lbracket)
.split(",")
.map(selector => selector.trim());
// Iterate through each selector from _selectors_.
selectors.forEach(selector => {
// Initialize the json-object representing the declaration block of
// _selector_.
if (!json[selector]) json[selector] = {};
// Save the declarations to the right selector
Object.keys(declarations).forEach(key => {
json[selector][key] = declarations[key];
});
});
// Continue to next instance
css = css.slice(rbracket + 1).trim()
}
// return the json data
return json;
}

1
index.html
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@ -131,7 +131,6 @@
<script src="libs/scripts/prettify.min.js"></script>
<script src="libs/scripts/index.js"></script>
<script src="libs/scripts/jquery.min.js"></script>
<script src="libs/scripts/FuriganaMD.js"></script>
<script src="libs/scripts/json5.js"></script>
<script src="assets/scripts/sync-scroll.js"></script>

241
libs/scripts/FuriganaMD.js
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@ -1,241 +0,0 @@
/**
* 注音功能来自于：https://github.com/amclees/furigana-markdown
* 详见上述文档
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.FuriganaMD = factory());
}(this, (function () {
'use strict';
// This function escapes special characters for use in a regex constructor.
function escapeForRegex(string) {
return string.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
}
function emptyStringFilter(block) {
return block !== '';
}
const kanjiRange = '\\u4e00-\\u9faf';
const kanjiBlockRegex = new RegExp(`[${kanjiRange}]+`, 'g');
const nonKanjiBlockRegex = new RegExp(`[^${kanjiRange}]+`, 'g');
const kanaWithAnnotations = '\\u3041-\\u3095\\u3099-\\u309c\\u3081-\\u30fa\\u30fc';
const furiganaSeperators = '.．。・';
const seperatorRegex = new RegExp(`[${furiganaSeperators}]`, 'g');
const singleKanjiRegex = new RegExp(`^[${kanjiRange}]$`);
function isKanji(character) {
return character.match(singleKanjiRegex);
}
const innerRegexString = '(?:[^\\u0000-\\u007F]|\\w)+';
let regexList = [];
let previousFuriganaForms = '';
function updateRegexList(furiganaForms) {
previousFuriganaForms = furiganaForms;
let formArray = furiganaForms.split('|');
if (formArray.length === 0) {
formArray = ['[]:^:()'];
}
regexList = formArray.map(form => {
let furiganaComponents = form.split(':');
if (furiganaComponents.length !== 3) {
furiganaComponents = ['[]', '^', '()'];
}
const mainBrackets = furiganaComponents[0];
const seperator = furiganaComponents[1];
const furiganaBrackets = furiganaComponents[2];
return new RegExp(
escapeForRegex(mainBrackets[0]) +
'(' + innerRegexString + ')' +
escapeForRegex(mainBrackets[1]) +
escapeForRegex(seperator) +
escapeForRegex(furiganaBrackets[0]) +
'(' + innerRegexString + ')' +
escapeForRegex(furiganaBrackets[1]),
'g'
);
});
}
let autoRegexList = [];
let previousAutoBracketSets = '';
function updateAutoRegexList(autoBracketSets) {
previousAutoBracketSets = autoBracketSets;
autoRegexList = autoBracketSets.split('|').map(brackets => {
/*
Sample built regex:
/(^|[^\u4e00-\u9faf]|)([\u4e00-\u9faf]+)([\u3041-\u3095\u3099-\u309c\u3081-\u30fa\u30fc]*)【((?:[^【】\u4e00-\u9faf]|w)+)】/g
*/
return new RegExp(
`(^|[^${kanjiRange}]|)` +
`([${kanjiRange}]+)` +
`([${kanaWithAnnotations}]*)` +
escapeForRegex(brackets[0]) +
`((?:[^${escapeForRegex(brackets)}\\u0000-\\u007F]|\\w|[${furiganaSeperators}])+)` +
escapeForRegex(brackets[1]),
'g'
);
});
}
let replacementTemplate = '';
let replacementBrackets = '';
function updateReplacementTemplate(furiganaFallbackBrackets) {
if (furiganaFallbackBrackets.length !== 2) {
furiganaFallbackBrackets = '【】';
}
replacementBrackets = furiganaFallbackBrackets;
replacementTemplate = `<ruby>$1<rp>${furiganaFallbackBrackets[0]}</rp><rt style="line-height:1;font-size:10px;">$2</rt><rp>${furiganaFallbackBrackets[1]}</rp></ruby>`;
}
updateReplacementTemplate('【】');
function addFurigana(text, options) {
if (options.furiganaForms !== previousFuriganaForms) {
updateRegexList(options.furiganaForms);
}
if (options.furiganaFallbackBrackets !== replacementBrackets) {
updateReplacementTemplate(options.furiganaFallbackBrackets);
}
regexList.forEach(regex => {
text = text.replace(regex, (match, wordText, furiganaText, offset, mainText) => {
if (match.indexOf('\\') === -1 && mainText[offset - 1] !== '\\') {
if ((!options.furiganaPatternMatching) || wordText.search(kanjiBlockRegex) === -1 || wordText[0].search(kanjiBlockRegex) === -1) {
return replacementTemplate.replace('$1', wordText).replace('$2', furiganaText);
} else {
let originalFuriganaText = (' ' + furiganaText).slice(1);
let nonKanji = wordText.split(kanjiBlockRegex).filter(emptyStringFilter);
let kanji = wordText.split(nonKanjiBlockRegex).filter(emptyStringFilter);
let replacementText = '';
let lastUsedKanjiIndex = 0;
if (nonKanji.length === 0) {
return replacementTemplate.replace('$1', wordText).replace('$2', furiganaText);
}
nonKanji.forEach((currentNonKanji, index) => {
if (furiganaText === undefined) {
if (index < kanji.length) {
replacementText += kanji[index];
}
replacementText += currentNonKanji;
return;
}
let splitFurigana = furiganaText.split(new RegExp(escapeForRegex(currentNonKanji) + '(.*)')).filter(emptyStringFilter);
lastUsedKanjiIndex = index;
replacementText += replacementTemplate.replace('$1', kanji[index]).replace('$2', splitFurigana[0]);
replacementText += currentNonKanji;
furiganaText = splitFurigana[1];
});
if (furiganaText !== undefined && lastUsedKanjiIndex + 1 < kanji.length) {
replacementText += replacementTemplate.replace('$1', kanji[lastUsedKanjiIndex + 1]).replace('$2', furiganaText);
} else if (furiganaText !== undefined) {
return replacementTemplate.replace('$1', wordText).replace('$2', originalFuriganaText);
} else if (lastUsedKanjiIndex + 1 < kanji.length) {
replacementText += kanji[lastUsedKanjiIndex + 1];
}
return replacementText;
}
} else {
return match;
}
});
});
if (!options.furiganaStrictMode) {
if (options.furiganaAutoBracketSets !== previousAutoBracketSets) {
updateAutoRegexList(options.furiganaAutoBracketSets);
}
autoRegexList.forEach(regex => {
text = text.replace(regex, (match, preWordTerminator, wordKanji, wordKanaSuffix, furiganaText, offset, mainText) => {
if (match.indexOf('\\') === -1) {
if (options.furiganaPatternMatching) {
let rubies = [];
let furigana = furiganaText;
let stem = (' ' + wordKanaSuffix).slice(1);
for (let i = furiganaText.length - 1; i >= 0; i--) {
if (wordKanaSuffix.length === 0) {
furigana = furiganaText.substring(0, i + 1);
break;
}
if (furiganaText[i] !== wordKanaSuffix.slice(-1)) {
furigana = furiganaText.substring(0, i + 1);
break;
}
wordKanaSuffix = wordKanaSuffix.slice(0, -1);
}
if (furiganaSeperators.split('').reduce(
(noSeperator, seperator) => {
return noSeperator && (furigana.indexOf(seperator) === -1);
},
true
)) {
rubies = [replacementTemplate.replace('$1', wordKanji).replace('$2', furigana)];
} else {
let kanaParts = furigana.split(seperatorRegex);
let kanji = wordKanji.split('');
if (kanaParts.length === 0 || kanaParts.length > kanji.length) {
rubies = [replacementTemplate.replace('$1', wordKanji).replace('$2', furigana)];
} else {
for (let i = 0; i < kanaParts.length - 1; i++) {
if (kanji.length === 0) {
break;
}
rubies.push(replacementTemplate.replace('$1', kanji.shift()).replace('$2', kanaParts[i]));
}
let lastKanaPart = kanaParts.pop();
rubies.push(replacementTemplate.replace('$1', kanji.join('')).replace('$2', lastKanaPart));
}
}
return preWordTerminator + rubies.join('') + stem;
} else {
return preWordTerminator + replacementTemplate.replace('$1', wordKanji).replace('$2', furiganaText) + wordKanaSuffix;
}
} else {
return match;
}
});
});
}
return text;
}
function handleEscapedSpecialBrackets(text) {
// By default 【 and 】 cannot be escaped in markdown, this will remove backslashes from in front of them to give that effect.
return text.replace(/\\([【】])/g, '$1');
}
let FuriganaMD = {};
FuriganaMD.register = function (renderer) {
renderer.text = function (text) {
let options = {
furigana: true,
furiganaForms: "()::{}",
furiganaFallbackBrackets: "{}",
furiganaStrictMode: false,
furiganaAutoBracketSets: "{}",
furiganaPatternMatching: true,
};
// console.log('override text render',text);
// console.log('after add',addFurigana(text, options));
return handleEscapedSpecialBrackets(addFurigana(text, options));
};
};
return FuriganaMD;
})));