forked from M3-Academy/challenge-algorithms-v2.0
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14 KiB
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14 KiB
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{"version":3,"file":"resolve-uri.umd.js","sources":["../src/resolve-uri.ts"],"sourcesContent":["// Matches the scheme of a URL, eg \"http://\"\nconst schemeRegex = /^[\\w+.-]+:\\/\\//;\n\n/**\n * Matches the parts of a URL:\n * 1. Scheme, including \":\", guaranteed.\n * 2. User/password, including \"@\", optional.\n * 3. Host, guaranteed.\n * 4. Port, including \":\", optional.\n * 5. Path, including \"/\", optional.\n * 6. Query, including \"?\", optional.\n * 7. Hash, including \"#\", optional.\n */\nconst urlRegex = /^([\\w+.-]+:)\\/\\/([^@/#?]*@)?([^:/#?]*)(:\\d+)?(\\/[^#?]*)?(\\?[^#]*)?(#.*)?/;\n\n/**\n * File URLs are weird. They dont' need the regular `//` in the scheme, they may or may not start\n * with a leading `/`, they can have a domain (but only if they don't start with a Windows drive).\n *\n * 1. Host, optional.\n * 2. Path, which may include \"/\", guaranteed.\n * 3. Query, including \"?\", optional.\n * 4. Hash, including \"#\", optional.\n */\nconst fileRegex = /^file:(?:\\/\\/((?![a-z]:)[^/#?]*)?)?(\\/?[^#?]*)(\\?[^#]*)?(#.*)?/i;\n\ntype Url = {\n scheme: string;\n user: string;\n host: string;\n port: string;\n path: string;\n query: string;\n hash: string;\n type: UrlType;\n};\n\nenum UrlType {\n Empty = 1,\n Hash = 2,\n Query = 3,\n RelativePath = 4,\n AbsolutePath = 5,\n SchemeRelative = 6,\n Absolute = 7,\n}\n\nfunction isAbsoluteUrl(input: string): boolean {\n return schemeRegex.test(input);\n}\n\nfunction isSchemeRelativeUrl(input: string): boolean {\n return input.startsWith('//');\n}\n\nfunction isAbsolutePath(input: string): boolean {\n return input.startsWith('/');\n}\n\nfunction isFileUrl(input: string): boolean {\n return input.startsWith('file:');\n}\n\nfunction isRelative(input: string): boolean {\n return /^[.?#]/.test(input);\n}\n\nfunction parseAbsoluteUrl(input: string): Url {\n const match = urlRegex.exec(input)!;\n return makeUrl(\n match[1],\n match[2] || '',\n match[3],\n match[4] || '',\n match[5] || '/',\n match[6] || '',\n match[7] || '',\n );\n}\n\nfunction parseFileUrl(input: string): Url {\n const match = fileRegex.exec(input)!;\n const path = match[2];\n return makeUrl(\n 'file:',\n '',\n match[1] || '',\n '',\n isAbsolutePath(path) ? path : '/' + path,\n match[3] || '',\n match[4] || '',\n );\n}\n\nfunction makeUrl(\n scheme: string,\n user: string,\n host: string,\n port: string,\n path: string,\n query: string,\n hash: string,\n): Url {\n return {\n scheme,\n user,\n host,\n port,\n path,\n query,\n hash,\n type: UrlType.Absolute,\n };\n}\n\nfunction parseUrl(input: string): Url {\n if (isSchemeRelativeUrl(input)) {\n const url = parseAbsoluteUrl('http:' + input);\n url.scheme = '';\n url.type = UrlType.SchemeRelative;\n return url;\n }\n\n if (isAbsolutePath(input)) {\n const url = parseAbsoluteUrl('http://foo.com' + input);\n url.scheme = '';\n url.host = '';\n url.type = UrlType.AbsolutePath;\n return url;\n }\n\n if (isFileUrl(input)) return parseFileUrl(input);\n\n if (isAbsoluteUrl(input)) return parseAbsoluteUrl(input);\n\n const url = parseAbsoluteUrl('http://foo.com/' + input);\n url.scheme = '';\n url.host = '';\n url.type = input\n ? input.startsWith('?')\n ? UrlType.Query\n : input.startsWith('#')\n ? UrlType.Hash\n : UrlType.RelativePath\n : UrlType.Empty;\n return url;\n}\n\nfunction stripPathFilename(path: string): string {\n // If a path ends with a parent directory \"..\", then it's a relative path with excess parent\n // paths. It's not a file, so we can't strip it.\n if (path.endsWith('/..')) return path;\n const index = path.lastIndexOf('/');\n return path.slice(0, index + 1);\n}\n\nfunction mergePaths(url: Url, base: Url) {\n normalizePath(base, base.type);\n\n // If the path is just a \"/\", then it was an empty path to begin with (remember, we're a relative\n // path).\n if (url.path === '/') {\n url.path = base.path;\n } else {\n // Resolution happens relative to t
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