aaac7fed
 liuqimichale
add
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"use strict";
// we can't use path.win32.isAbsolute because it also matches paths starting with a forward slash
const matchNativeWin32Path = /^[A-Z]:[/\\]|^\\\\/i;
function urlToRequest(url, root) {
const moduleRequestRegex = /^[^?]*~/;
let request;
if(matchNativeWin32Path.test(url)) {
// absolute windows path, keep it
request = url;
} else if(root !== undefined && root !== false && /^\//.test(url)) {
// if root is set and the url is root-relative
switch(typeof root) {
// 1. root is a string: root is prefixed to the url
case "string":
// special case: `~` roots convert to module request
if(moduleRequestRegex.test(root)) {
request = root.replace(/([^~\/])$/, "$1/") + url.slice(1);
} else {
request = root + url;
}
break;
// 2. root is `true`: absolute paths are allowed
// *nix only, windows-style absolute paths are always allowed as they doesn't start with a `/`
case "boolean":
request = url;
break;
default:
throw new Error("Unexpected parameters to loader-utils 'urlToRequest': url = " + url + ", root = " + root + ".");
}
} else if(/^\.\.?\//.test(url)) {
// A relative url stays
request = url;
} else {
// every other url is threaded like a relative url
request = "./" + url;
}
// A `~` makes the url an module
if(moduleRequestRegex.test(request)) {
request = request.replace(moduleRequestRegex, "");
}
return request;
}
module.exports = urlToRequest;
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