Function loadFile

core/cb.addons/require-tools/less/lessc.js:6692–6753

(originalHref, currentFileInfo, callback, env, newVars)

}

function loadFile(originalHref, currentFileInfo, callback, env, newVars) {

    if (currentFileInfo && currentFileInfo.currentDirectory && !/^([a-z-]+:)?\//.test(originalHref)) {
        originalHref = currentFileInfo.currentDirectory + originalHref;
    }

    // sheet may be set to the stylesheet for the initial load or a collection of properties including
    // some env variables for imports
    var hrefParts = extractUrlParts(originalHref, window.location.href);
    var href      = hrefParts.url;
    var newFileInfo = {
        currentDirectory: hrefParts.path,
        filename: href
    };

    if (currentFileInfo) {
        newFileInfo.entryPath = currentFileInfo.entryPath;
        newFileInfo.rootpath = currentFileInfo.rootpath;
        newFileInfo.rootFilename = currentFileInfo.rootFilename;
        newFileInfo.relativeUrls = currentFileInfo.relativeUrls;
    } else {
        newFileInfo.entryPath = hrefParts.path;
        newFileInfo.rootpath = less.rootpath || hrefParts.path;
        newFileInfo.rootFilename = href;
        newFileInfo.relativeUrls = env.relativeUrls;
    }

    if (newFileInfo.relativeUrls) {
        if (env.rootpath) {
            newFileInfo.rootpath = extractUrlParts(env.rootpath + pathDiff(hrefParts.path, newFileInfo.entryPath)).path;
        } else {
            newFileInfo.rootpath = hrefParts.path;
        }
    }

    if (env.useFileCache && fileCache[href]) {
        try {
            var lessText = fileCache[href];
            if (newVars) {
                lessText += "\n" + newVars;
            }
            callback(null, lessText, href, newFileInfo, { lastModified: new Date() });
        } catch (e) {
            callback(e, null, href);
        }
        return;
    }

    doXHR(href, env.mime, function (data, lastModified) {
        // per file cache
        fileCache[href] = data;

        // Use remote copy (re-parse)
        try {
            callback(null, data, href, newFileInfo, { lastModified: lastModified });
        } catch (e) {
            callback(e, null, href);
        }