08-27-周三_17-09-29

node_modules/less/lib/less-node/url-file-manager.js

@@ -0,0 +1,56 @@
+var isUrlRe = /^(?:https?:)?\/\//i,
+    url = require('url'),
+    request,
+    PromiseConstructor,
+    AbstractFileManager = require("../less/environment/abstract-file-manager.js"),
+    logger = require("../less/logger");
+
+var UrlFileManager = function() {
+};
+
+UrlFileManager.prototype = new AbstractFileManager();
+
+UrlFileManager.prototype.supports = function(filename, currentDirectory, options, environment) {
+    return isUrlRe.test( filename ) || isUrlRe.test(currentDirectory);
+};
+
+UrlFileManager.prototype.loadFile = function(filename, currentDirectory, options, environment) {
+    if (!PromiseConstructor) {
+        PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
+    }
+    return new PromiseConstructor(function(fulfill, reject) {
+        if (request === undefined) {
+            try { request = require('request'); }
+            catch(e) { request = null; }
+        }
+        if (!request) {
+            reject({ type: 'File', message: "optional dependency 'request' required to import over http(s)\n" });
+            return;
+        }
+
+        var urlStr = isUrlRe.test( filename ) ? filename : url.resolve(currentDirectory, filename),
+            urlObj = url.parse(urlStr);
+
+        if (!urlObj.protocol) {
+            urlObj.protocol = "http";
+            urlStr = urlObj.format();
+        }
+
+        request.get({uri: urlStr, strictSSL: !options.insecure }, function (error, res, body) {
+            if (error) {
+                reject({ type: 'File', message: "resource '" + urlStr + "' gave this Error:\n  " + error + "\n" });
+                return;
+            }
+            if (res && res.statusCode === 404) {
+                reject({ type: 'File', message: "resource '" + urlStr + "' was not found\n" });
+                return;
+            }
+            if (!body) {
+                logger.warn('Warning: Empty body (HTTP ' + res.statusCode + ') returned by "' + urlStr + '"');
+            }
+            fulfill({ contents: body, filename: urlStr });
+        });
+    });
+};
+
+module.exports = UrlFileManager;