restricted-input/dist/lib/formatter/parse-pattern.js

Restrict inputs to certain valid characters (e.g. formatting phone or card numbers)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parsePattern = void 0;
var ALPHA_REGEX = /[A-Za-z]/;
var DIGIT_REGEX = /\d/;
var WILD_REGEX = /./;
var PLACEHOLDER_REGEX = /^[A-Za-z0-9\*]$/;
var PLACEHOLDER_PATTERN = "({{[^}]+}})";
var PERMACHAR_REGEX = "(\\s|\\S)";
var PATTERN_REGEX = new RegExp(PLACEHOLDER_PATTERN + "|" + PERMACHAR_REGEX, "g");
var PLACEHOLDER_PATTERN_REGEX = new RegExp("^" + PLACEHOLDER_PATTERN + "$");
var replacerRegex = new RegExp("{|}", "g");
function isDigit(char) {
    return DIGIT_REGEX.test(char);
}
function isAlpha(char) {
    return ALPHA_REGEX.test(char);
}
function createRegexForChar(char) {
    if (isDigit(char)) {
        return DIGIT_REGEX;
    }
    else if (isAlpha(char)) {
        return ALPHA_REGEX;
    }
    return WILD_REGEX;
}
function isPlaceholder(char) {
    return PLACEHOLDER_REGEX.test(char);
}
function isPlaceholderPattern(str) {
    return PLACEHOLDER_PATTERN_REGEX.test(str);
}
function parsePattern(patternString) {
    var patternArray = [];
    var patternParts = patternString.match(PATTERN_REGEX);
    if (!patternParts) {
        return patternArray;
    }
    for (var index = 0, i = 0; i < patternParts.length; i++) {
        var patternPart = patternParts[i];
        if (isPlaceholderPattern(patternPart)) {
            var placeholderChars = patternPart.replace(replacerRegex, "").split("");
            for (var j = 0; j < placeholderChars.length; j++) {
                var placeholderChar = placeholderChars[j];
                if (!isPlaceholder(placeholderChar)) {
                    throw new Error("Only alphanumeric or wildcard pattern matchers are allowed");
                }
                patternArray.push({
                    value: createRegexForChar(placeholderChar),
                    isPermaChar: false,
                    index: index++,
                });
            }
        }
        else {
            patternArray.push({
                value: patternPart,
                isPermaChar: true,
                index: index++,
            });
        }
    }
    return patternArray;
}
exports.parsePattern = parsePattern;