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Diffstat (limited to 'node_modules/@jridgewell/resolve-uri/dist/resolve-uri.mjs')
| -rw-r--r-- | node_modules/@jridgewell/resolve-uri/dist/resolve-uri.mjs | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/node_modules/@jridgewell/resolve-uri/dist/resolve-uri.mjs b/node_modules/@jridgewell/resolve-uri/dist/resolve-uri.mjs new file mode 100644 index 0000000..b7fa4bd --- /dev/null +++ b/node_modules/@jridgewell/resolve-uri/dist/resolve-uri.mjs @@ -0,0 +1,177 @@ +// Matches the scheme of a URL, eg "http://" +const schemeRegex = /^[\w+.-]+:\/\//; +/** + * Matches the parts of a URL: + * 1. Scheme, including ":", guaranteed. + * 2. User/password, including "@", optional. + * 3. Host, guaranteed. + * 4. Port, including ":", optional. + * 5. Path, including "/", optional. + */ +const urlRegex = /^([\w+.-]+:)\/\/([^@/#?]*@)?([^:/#?]*)(:\d+)?(\/[^#?]*)?/; +function isAbsoluteUrl(input) { + return schemeRegex.test(input); +} +function isSchemeRelativeUrl(input) { + return input.startsWith('//'); +} +function isAbsolutePath(input) { + return input.startsWith('/'); +} +function parseAbsoluteUrl(input) { + const match = urlRegex.exec(input); + return { + scheme: match[1], + user: match[2] || '', + host: match[3], + port: match[4] || '', + path: match[5] || '/', + relativePath: false, + }; +} +function parseUrl(input) { + if (isSchemeRelativeUrl(input)) { + const url = parseAbsoluteUrl('http:' + input); + url.scheme = ''; + return url; + } + if (isAbsolutePath(input)) { + const url = parseAbsoluteUrl('http://foo.com' + input); + url.scheme = ''; + url.host = ''; + return url; + } + if (!isAbsoluteUrl(input)) { + const url = parseAbsoluteUrl('http://foo.com/' + input); + url.scheme = ''; + url.host = ''; + url.relativePath = true; + return url; + } + return parseAbsoluteUrl(input); +} +function stripPathFilename(path) { + // If a path ends with a parent directory "..", then it's a relative path with excess parent + // paths. It's not a file, so we can't strip it. + if (path.endsWith('/..')) + return path; + const index = path.lastIndexOf('/'); + return path.slice(0, index + 1); +} +function mergePaths(url, base) { + // If we're not a relative path, then we're an absolute path, and it doesn't matter what base is. + if (!url.relativePath) + return; + normalizePath(base); + // If the path is just a "/", then it was an empty path to begin with (remember, we're a relative + // path). + if (url.path === '/') { + url.path = base.path; + } + else { + // Resolution happens relative to the base path's directory, not the file. + url.path = stripPathFilename(base.path) + url.path; + } + // If the base path is absolute, then our path is now absolute too. + url.relativePath = base.relativePath; +} +/** + * The path can have empty directories "//", unneeded parents "foo/..", or current directory + * "foo/.". We need to normalize to a standard representation. + */ +function normalizePath(url) { + const { relativePath } = url; + const pieces = url.path.split('/'); + // We need to preserve the first piece always, so that we output a leading slash. The item at + // pieces[0] is an empty string. + let pointer = 1; + // Positive is the number of real directories we've output, used for popping a parent directory. + // Eg, "foo/bar/.." will have a positive 2, and we can decrement to be left with just "foo". + let positive = 0; + // We need to keep a trailing slash if we encounter an empty directory (eg, splitting "foo/" will + // generate `["foo", ""]` pieces). And, if we pop a parent directory. But once we encounter a + // real directory, we won't need to append, unless the other conditions happen again. + let addTrailingSlash = false; + for (let i = 1; i < pieces.length; i++) { + const piece = pieces[i]; + // An empty directory, could be a trailing slash, or just a double "//" in the path. + if (!piece) { + addTrailingSlash = true; + continue; + } + // If we encounter a real directory, then we don't need to append anymore. + addTrailingSlash = false; + // A current directory, which we can always drop. + if (piece === '.') + continue; + // A parent directory, we need to see if there are any real directories we can pop. Else, we + // have an excess of parents, and we'll need to keep the "..". + if (piece === '..') { + if (positive) { + addTrailingSlash = true; + positive--; + pointer--; + } + else if (relativePath) { + // If we're in a relativePath, then we need to keep the excess parents. Else, in an absolute + // URL, protocol relative URL, or an absolute path, we don't need to keep excess. + pieces[pointer++] = piece; + } + continue; + } + // We've encountered a real directory. Move it to the next insertion pointer, which accounts for + // any popped or dropped directories. + pieces[pointer++] = piece; + positive++; + } + let path = ''; + for (let i = 1; i < pointer; i++) { + path += '/' + pieces[i]; + } + if (!path || (addTrailingSlash && !path.endsWith('/..'))) { + path += '/'; + } + url.path = path; +} +/** + * Attempts to resolve `input` URL/path relative to `base`. + */ +function resolve(input, base) { + if (!input && !base) + return ''; + const url = parseUrl(input); + // If we have a base, and the input isn't already an absolute URL, then we need to merge. + if (base && !url.scheme) { + const baseUrl = parseUrl(base); + url.scheme = baseUrl.scheme; + // If there's no host, then we were just a path. + if (!url.host || baseUrl.scheme === 'file:') { + // The host, user, and port are joined, you can't copy one without the others. + url.user = baseUrl.user; + url.host = baseUrl.host; + url.port = baseUrl.port; + } + mergePaths(url, baseUrl); + } + normalizePath(url); + // If the input (and base, if there was one) are both relative, then we need to output a relative. + if (url.relativePath) { + // The first char is always a "/". + const path = url.path.slice(1); + if (!path) + return '.'; + // If base started with a leading ".", or there is no base and input started with a ".", then we + // need to ensure that the relative path starts with a ".". We don't know if relative starts + // with a "..", though, so check before prepending. + const keepRelative = (base || input).startsWith('.'); + return !keepRelative || path.startsWith('.') ? path : './' + path; + } + // If there's no host (and no scheme/user/port), then we need to output an absolute path. + if (!url.scheme && !url.host) + return url.path; + // We're outputting either an absolute URL, or a protocol relative one. + return `${url.scheme}//${url.user}${url.host}${url.port}${url.path}`; +} + +export { resolve as default }; +//# sourceMappingURL=resolve-uri.mjs.map |