71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
var url = require('url');
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var path = require('path');
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// Is the url an external url
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function isExternal(href) {
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try {
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return Boolean(url.parse(href).protocol);
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} catch(err) {
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return false;
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}
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}
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// Inverse of isExternal
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function isRelative(href) {
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return !isExternal(href);
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}
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// Return true if the link is an achor
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function isAnchor(href) {
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try {
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var parsed = url.parse(href);
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return !!(!parsed.protocol && !parsed.path && parsed.hash);
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} catch(err) {
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return false;
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}
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}
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// Normalize a path to be a link
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function normalize(s) {
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return s.replace(/\\/g, '/');
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}
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// Convert relative to absolute path
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// dir: directory parent of the file currently in rendering process
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// outdir: directory parent from the html output
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function toAbsolute(_href, dir, outdir) {
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if (isExternal(_href)) return _href;
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outdir = outdir == undefined? dir : outdir;
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_href = normalize(_href);
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dir = normalize(dir);
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outdir = normalize(outdir);
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// Path "_href" inside the base folder
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var hrefInRoot = path.normalize(path.join(dir, _href));
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if (_href[0] == '/') hrefInRoot = path.normalize(_href.slice(1));
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// Make it relative to output
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_href = path.relative(outdir, hrefInRoot);
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// Normalize windows paths
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_href = normalize(_href);
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return _href;
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}
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// Convert an absolute path to a relative path for a specific folder (dir)
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// ('test/', 'hello.md') -> '../hello.md'
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function relative(dir, file) {
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return normalize(path.relative(dir, file));
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}
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module.exports = {
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isExternal: isExternal,
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isRelative: isRelative,
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isAnchor: isAnchor,
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normalize: normalize,
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toAbsolute: toAbsolute,
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relative: relative
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};
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