@mieweb/wikigdrive/esm/src/odt/postprocess/unwrapEmptyPre.js

Google Drive to MarkDown synchronization

import { walkRecursiveSync } from '../markdownNodesUtils.js';
// Related tests:
// test ./our-docs
// test ./suggest.md
export function unwrapEmptyPre(markdownChunks) {
    let inHtml = false;
    walkRecursiveSync(markdownChunks.body, (chunk, ctx) => {
        if (chunk.isTag && chunk.tag === 'HTML_MODE/') {
            inHtml = true;
            return;
        }
        if (inHtml) {
            return;
        }
        if (!chunk.isTag) {
            return;
        }
        if (chunk.isTag === true && ['PRE'].includes(chunk.tag)) {
            let changed = false;
            for (let i = 0; i < chunk.children.length; i++) {
                const child = chunk.children[i];
                if (child.isTag && child.tag === 'EOL/') {
                    child.tag = 'EMPTY_LINE/';
                    chunk.children.splice(i, 1);
                    chunk.parent.children.splice(ctx.nodeIdx - 1, 0, child);
                    i--;
                    changed = true;
                    continue;
                }
                break;
            }
            if (changed) {
                return {
                    nodeIdx: ctx.nodeIdx + 1
                };
            }
        }
    }, {}, (chunk) => {
        if (chunk.isTag && chunk.tag === 'HTML_MODE/') {
            inHtml = false;
            return;
        }
    });
    inHtml = false;
    walkRecursiveSync(markdownChunks.body, (chunk, ctx) => {
        if (chunk.isTag && chunk.tag === 'HTML_MODE/') {
            inHtml = true;
            return;
        }
        if (inHtml) {
            return;
        }
        if (!chunk.isTag) {
            return;
        }
        if (chunk.isTag === true && ['PRE'].includes(chunk.tag)) {
            if (chunk.children.length === 0) {
                chunk.parent.children.splice(ctx.nodeIdx, 1);
            }
        }
    }, {}, (chunk) => {
        if (chunk.isTag && chunk.tag === 'HTML_MODE/') {
            inHtml = false;
            return;
        }
    });
}