jtc-utils/cjs/util/DateFormat.js

Utilities for Japanese Traditional Companies

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DateFormat = void 0;
const DateFormatCache = new Map();
class DateFormat {
    static get(format, locale = "en") {
        const cached = DateFormatCache.get(`${locale} ${format}`);
        if (cached) {
            return cached;
        }
        const re = /('(?:''|[^'])*')|(P+p+|(?:G+|y+|Y+|R+|u+|Q+|q+|M+|L+|w+|I+|d+|E+|i+|e+|c+|a+|b+|B+|h+|H+|K+|k+|m+|s+|S+|X+|x+|O+|z+|t+|T+|P+|p+)o?)|(.+?)/y;
        const parts = new Array();
        let m;
        while ((m = re.exec(format)) != null) {
            if (m[1]) {
                parts.push({ type: "quoted", text: m[1] });
            }
            else if (m[2]) {
                parts.push({ type: "pattern", text: m[2] });
            }
            else {
                parts.push({ type: "literal", text: m[3] });
            }
        }
        if (DateFormatCache.size >= 32) {
            for (const entry of DateFormatCache) {
                DateFormatCache.delete(entry[0]);
                break;
            }
        }
        const dformat = new DateFormat(parts);
        DateFormatCache.set(`${locale} ${format}`, dformat);
        return dformat;
    }
    constructor(parts) {
        this.parts = parts;
    }
    toString() {
        let str = "";
        let quoted = false;
        for (let i = 0; i < this.parts.length; i++) {
            const part = this.parts[i];
            if (part.type === "quoted") {
                if (!quoted) {
                    str += "'";
                    quoted = true;
                }
                str += part.text.substring(1, part.text.length - 1);
            }
            else {
                if (quoted) {
                    str += "'";
                    quoted = false;
                }
                str += part.text;
            }
        }
        if (quoted) {
            str += "'";
            quoted = false;
        }
        return str;
    }
}
exports.DateFormat = DateFormat;
//# sourceMappingURL=DateFormat.js.map