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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| // noinspection JSUnusedGlobalSymbols | ||
| export default { | ||
| activeNav: (data) => { | ||
| const sidenav = data['sidenav']; | ||
|
|
||
| const results = {}; | ||
| _visitPermalinks(results, sidenav, []); | ||
| return results; | ||
| }, | ||
| }; | ||
|
|
||
| /** | ||
| * @param results {object} | ||
| * @param navTree {object[]} | ||
| * @param path {number[]} | ||
| */ | ||
| function _visitPermalinks(results, navTree, path) { | ||
| navTree.forEach((entry, i) => { | ||
| const permalink = entry['permalink']; | ||
| const newPath = [...path, i + 1]; | ||
| const children = entry['children']; | ||
| const hasChildren = Array.isArray(children); | ||
|
|
||
| if (typeof permalink === 'string' || permalink instanceof String) { | ||
| _addLink(results, permalink, newPath, hasChildren); | ||
| } | ||
|
|
||
| if (hasChildren) { | ||
| _visitPermalinks(results, children, newPath); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| /** | ||
| * @param results {object} | ||
| * @param permalink {string} | ||
| * @param path {number[]} | ||
| * @param hasChildren {boolean} | ||
| */ | ||
| function _addLink(results, permalink, path, hasChildren) { | ||
| // Skip external links. | ||
| if (permalink.startsWith('http')) { | ||
| return; | ||
| } | ||
|
|
||
| // Throw an error if a permalink doesn't start with a `/`. | ||
| if (!permalink.startsWith('/')) { | ||
| throw new Error(`${permalink} does not begin with a '/'`); | ||
| } | ||
|
|
||
| // Split the specified permalink into parts. | ||
| const parts = permalink.split('/'); | ||
|
|
||
| // Add active nav data for the specified permalink. | ||
| _addPart(results, path, parts, 1, hasChildren); | ||
| } | ||
|
|
||
| /** | ||
| * @param result {object} | ||
| * @param path {number[]} | ||
| * @param parts {string[]} | ||
| * @param index {number} | ||
| * @param hasChildren {boolean} | ||
| */ | ||
| function _addPart(result, path, parts, index, hasChildren = false) { | ||
| const isLast = index === parts.length - 1; | ||
| let current = result[parts[index]]; | ||
|
|
||
| if (!current) { | ||
| // If the current part isn't in the result map yet, add a new map. | ||
| current = {}; | ||
| result[parts[index]] = current; | ||
| } | ||
|
|
||
| // If this is the last part of the path, | ||
| // store the active nav data. | ||
| if (isLast) { | ||
| const active = current['active']; | ||
| // Override active nav data if | ||
| // it doesn't already exist for this part, | ||
| // or the current active data was from an entry with children. | ||
| if (!active) { | ||
| current['active'] = path; | ||
| if (hasChildren) { | ||
| current['has-children'] = true; | ||
| } | ||
| } else if (!hasChildren && current['has-children'] === true) { | ||
| current['active'] = path; | ||
| current['has-children'] = false; | ||
| } | ||
| } else { | ||
| if (!current['paths']) { | ||
| current['paths'] = {}; | ||
| } | ||
|
|
||
| // Continue to the next part. | ||
| _addPart(current['paths'], path, parts, index + 1, hasChildren); | ||
| } | ||
| } |
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