index.js
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"use strict";
const assign = require("object-assign");
const PINYIN_DICT = require("../data/dict-zi");
const Pinyin = require("./pinyin");
let jieba;
let PHRASES_DICT;
class NodePinyin extends Pinyin {
// @param {String} hans 要转为拼音的目标字符串（汉字）。
// @param {Object} options, 可选，用于指定拼音风格，是否启用多音字。
// @return {Array} 返回的拼音列表。
convert (hans, options) {
if(typeof hans !== "string"){
return [];
}
options = assign({}, Pinyin.DEFAULT_OPTIONS, options);
let phrases = options && options.segment ? segment(hans) : hans;
let pys = [];
let nohans = "";
for (let i = 0, firstCharCode, words, l = phrases.length; i < l; i++) {
words = phrases[i];
firstCharCode = words.charCodeAt(0);
if(PINYIN_DICT[firstCharCode]){
// ends of non-chinese words.
if(nohans.length > 0){
pys.push([nohans]);
nohans = ""; // reset non-chinese words.
}
if (words.length === 1) {
pys = pys.concat(super.convert(words, options));
} else {
pys = pys.concat(this.phrases_pinyin(words, options));
}
} else {
nohans += words;
}
}
// 清理最后的非中文字符串。
if(nohans.length > 0){
pys.push([nohans]);
nohans = ""; // reset non-chinese words.
}
return pys;
}
// 词语注音
// @param {String} phrases, 指定的词组。
// @param {Object} options, 选项。
// @return {Array}
phrases_pinyin(phrases, options) {
let py = [];
if (PHRASES_DICT.hasOwnProperty(phrases)){
//! copy pinyin result.
PHRASES_DICT[phrases].forEach(function(item, idx){
py[idx] = [];
if (options.heteronym){
item.forEach(function(py_item, py_index){
py[idx][py_index] = Pinyin.toFixed(py_item, options.style);
});
} else {
py[idx][0] = Pinyin.toFixed(item[0], options.style);
}
});
} else {
for(let i = 0, l = phrases.length; i < l; i++){
py = py.concat(super.convert(phrases[i], options));
}
}
return py;
}
}
function segment(hans) {
try {
jieba = jieba || require("nodejieba");
} catch (ex) {
console.error();
console.error(" Segment need nodejieba, please run '$ npm install nodejieba'.");
console.error(" 分词需要使用 nodejieba 模块，请运行 '$ npm install nodejieba' 并确保安装完成。");
console.error();
throw ex;
}
// 词语拼音库。
PHRASES_DICT = PHRASES_DICT || require("../data/phrases-dict");
return jieba.cutSmall(hans, 4);
}
const pinyin = new NodePinyin(PINYIN_DICT);
module.exports = pinyin.convert.bind(pinyin);
module.exports.compare = pinyin.compare.bind(pinyin);
module.exports.STYLE_NORMAL = Pinyin.STYLE_NORMAL;
module.exports.STYLE_TONE = Pinyin.STYLE_TONE;
module.exports.STYLE_TONE2 = Pinyin.STYLE_TONE2;
module.exports.STYLE_TO3NE = Pinyin.STYLE_TO3NE;
module.exports.STYLE_INITIALS = Pinyin.STYLE_INITIALS;
module.exports.STYLE_FIRST_LETTER = Pinyin.STYLE_FIRST_LETTER;