@hebcal/leyning/dist/esm/summary.js

Torah Reading API for Parashat HaShavua and holidays

/*! @hebcal/leyning v9.2.5 */
import { formatAliyahShort } from './common.js';

/**
 * @private
 */
function isChapVerseBefore(a, b) {
    const cv1 = a.split(':').map(x => +x);
    const cv2 = b.split(':').map(x => +x);
    return cv1[0] * 100 + cv1[1] < cv2[0] * 100 + cv2[1];
}
/**
 * Summarizes an `AliyotMap` by collapsing all adjacent aliyot.
 * Finds any non-overlapping parts (e.g. special 7th aliyah or maftir)
 */
function makeLeyningParts(aliyot) {
    const nums = Object.keys(aliyot).filter(x => {
        if (x.length === 1) {
            return true;
        }
        const code = x.charCodeAt(0);
        return code >= 48 && code <= 57;
    });
    let start = aliyot[nums[0]];
    let end = start;
    const parts = [];
    for (let i = 0; i < nums.length; i++) {
        const num = nums[i];
        const aliyah = aliyot[num];
        if (i === nums.length - 1 && aliyah.k === end.k && aliyah.e === end.e) {
            // short-circuit when final aliyah is within the previous (e.g. M inside of 7)
            continue;
        }
        const prevEndChap = +end.e.split(':')[0];
        const curStartChap = +aliyah.b.split(':')[0];
        const sameOrNextChap = curStartChap === prevEndChap || curStartChap === prevEndChap + 1;
        if (i !== 0 &&
            (aliyah.k !== start.k ||
                isChapVerseBefore(aliyah.b, start.e) ||
                !sameOrNextChap)) {
            parts.push({ k: start.k, b: start.b, e: end.e });
            start = aliyah;
        }
        end = aliyah;
    }
    parts.push({ k: start.k, b: start.b, e: end.e });
    return parts;
}
/**
 * Returns a string representation of the leyning parts.
 * Separate verse ranges read from the same book are separated
 * by commas, e.g. `Isaiah 6:1-7:6, 9:5-6`.
 * Verse ranges from different books are separated by semicolons,
 * e.g. `Genesis 21:1-34; Numbers 29:1-6`.
 */
function makeSummaryFromParts(parts) {
    if (!Array.isArray(parts)) {
        parts = [parts];
    }
    let prev = parts[0];
    let summary = formatAliyahShort(prev, true);
    for (let i = 1; i < parts.length; i++) {
        const part = parts[i];
        if (part.k === prev.k) {
            summary += ', ';
        }
        else {
            summary += `; ${part.k} `;
        }
        summary += formatAliyahShort(part, false);
        prev = part;
    }
    return summary;
}
/**
 * Makes a summary of the leyning, like "Genesis 6:9-11:32"
 */
function makeLeyningSummary(aliyot) {
    const parts = makeLeyningParts(aliyot);
    return makeSummaryFromParts(parts);
}

export { makeLeyningParts, makeLeyningSummary, makeSummaryFromParts };