Function parseDimIndex

src/frontend/utils.ts:53–98

(spec: string, count: number)

}

export function parseDimIndex(spec: string, count: number): string[] {
    if (spec.indexOf(',') !== -1) {
        const components = spec.split(',').map((c) => c.trim());
        if (components.length !== count) {
            throw new Error('dimIndex Element has invalid specification.');
        }
        return components;
    }

    if (/^([0-9]+)\-([0-9]+)$/i.test(spec)) {
        const parts = spec.split('-').map((p) => parseInteger(p));
        const start = parts[0];
        const end = parts[1];

        const numElements = end - start + 1;
        if (numElements < count) {
            throw new Error('dimIndex Element has invalid specification.');
        }

        const components = [];
        for (let i = 0; i < count; i++) {
            components.push(`${start + i}`);
        }

        return components;
    }

    if (/^[a-zA-Z]\-[a-zA-Z]$/.test(spec)) {
        const start = spec.charCodeAt(0);
        const end = spec.charCodeAt(2);

        const numElements = end - start + 1;
        if (numElements < count) {
            throw new Error('dimIndex Element has invalid specification.');
        }

        const components = [];
        for (let i = 0; i < count; i++) {
            components.push(String.fromCharCode(start + i));
        }

        return components;
    }

    return [];
}