abi.js/dist/deno/matcher.js

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export function match(subject, pattern) {
    const _subject = normalize(subject);
    let _pattern = normalize(pattern);
    if (_pattern === _subject) {
        return {};
    }
    const params = [];
    const re = /\:([a-z]+)(?:\s*\<\s*(num(?:ber)|str(?:ing))\s*\>)?(?:\s*\=\s*(\w+))?/;
    _pattern = _pattern.replace('(', '(?:');
    while (re.test(_pattern)) {
        const m = re.exec(_pattern);
        const search = m[0];
        const type = m[2] in ['number', 'num'] ? 'number' : 'string';
        const value = type === 'number' ? Number(m[3]) : m[3];
        const param = {
            name: m[1],
            type,
            value,
        };
        params.push(param);
        const replace = `(${param.type === 'number' ? '[0-9]+' : '[^\\/\\[\\]]+'})${value === undefined ? '' : '?'}`;
        _pattern = _pattern.replace(search, replace);
    }
    _pattern = _pattern.replace('/', '\\/');
    _pattern = `^${_pattern}$`;
    const matches = _subject.match(_pattern);
    const options = {};
    if (matches) {
        let i = 0;
        for (const param of params) {
            let value = matches[i + 1] || param.value;
            if (param.type === 'number') {
                value = Number(value);
            }
            options[i++] = value;
            options[param.name] = value;
        }
        return options;
    }
    return false;
}
function normalize(subject) {
    let _subject = subject.trim();
    if (_subject.startsWith('/')) {
        _subject = _subject.substring(1);
    }
    if (_subject.endsWith('/')) {
        _subject = _subject.substring(0, _subject.length - 1);
    }
    return _subject;
}