element/src/locale/format.js

47 lines
953 B
JavaScript

import { hasOwn } from 'element-ui/src/utils/util';
const RE_NARGS = /(%|)\{([0-9a-zA-Z_]+)\}/g;
/**
* String format template
* - Inspired:
* https://github.com/Matt-Esch/string-template/index.js
*/
export default function(Vue) {
/**
* template
*
* @param {String} string
* @param {Array} ...args
* @return {String}
*/
function template(string, ...args) {
if (args.length === 1 && typeof args[0] === 'object') {
args = args[0];
}
if (!args || !args.hasOwnProperty) {
args = {};
}
return string.replace(RE_NARGS, (match, prefix, i, index) => {
let result;
if (string[index - 1] === '{' &&
string[index + match.length] === '}') {
return i;
} else {
result = hasOwn(args, i) ? args[i] : null;
if (result === null || result === undefined) {
return '';
}
return result;
}
});
}
return template;
}