Moved Modes into their own files.

bnoguchi · Feb 16, 2011 · 6ba342a · 6ba342a
1 parent 328b32b
commit 6ba342a
Showing 1 changed file with 2 additions and 124 deletions.
diff --git a/lib/browser-require.js b/lib/browser-require.js
@@ -1,6 +1,7 @@
 var fs = require('fs')
   , path = require('path')
-  , NpmModule = require('./npm_module');
+  , DynamicMode = require('./mode/dynamic');
+  , CompileMode = require('./mode/compile');
 
 module.exports = function (opts) {
   var baseDir = opts.base
@@ -11,129 +12,6 @@ module.exports = function (opts) {
     mode = new DynamicMode();
   }
 
-  var cache = {};
-
-  function Mode () {}
-
-  Mode.prototype = {
-    loadAsset: function (url, fn) {
-      var self = this;
-      if (cache[url]) return fn(null, cache[url]);
-      if ('.js' !== path.extname(url)) return fn(null, null);
-      this.locateAsset(url, function (err, location, isIndex) {
-        if (err) return fn(err);
-        if (!location) return fn(null, null);
-        self.loadSrc(url, location, isIndex, function (err, src) {
-          if (err) return fn(err);
-          cache[url] = src;
-          fn(null, src);
-        });
-      });
-    },
-    locateAsset: function (url, fn) {
-      if (NpmModule.npmFlag.test(url)) {
-        var npmModule = new NpmModule(url)
-          , filepath;
-        npmModule.isInstalled(function (err, isInstalled) { // Handle npm modules
-          if (err) return fn(err);
-          if (isInstalled) {
-            npmModule.locate(fn);
-          } else {
-            err = new Error("Could not find " + npmModule.pkgName +
-              ". Make sure it's installed via npm.");
-            fn(err);
-          }
-        });
-      } else { // Handle local, relative modules
-        filepath = path.join(baseDir, url);
-        if (path.existsSync(filepath)) {
-          fn(null, filepath);
-        } else {
-          // Probably a static file
-          fn(null, null);
-        }
-      }
-    },
-    depsFor: function (src) {
-      var re = /require\(['"]([^'"]+)['"]\)/g
-        , match
-        , deps = [];
-      while (match = re.exec(src)) {
-        deps.push(match[1]);
-      }
-      return deps;
-    }
-  };
-
-  function DynamicMode () {}
-
-  DynamicMode.prototype.__proto__ = Mode.prototype;
-  DynamicMode.prototype.loadSrc = function (url, location, isIndex, fn) {
-    var src = fs.readFileSync(location, 'utf8');
-    if (url === '/browser_require.js') return fn(null, src);
-    src = this.fillinTemplate(url, src, this.depsFor(src), isIndex);
-    fn(null, src);
-  };
-  DynamicMode.prototype.templates = {
-      response: fs.readFileSync(__dirname + '/templates/response.js', 'utf8')
-    , src: fs.readFileSync(__dirname + '/templates/src.js', 'utf8')
-  };
-  DynamicMode.prototype.fillinTemplate = function (module, src, deps, isIndex) {
-    var templates = this.templates
-      , dir = isIndex
-            ? module.replace(/\.js$/, '').split('/')
-            : module.split('/').slice(0, -1)
-      , src = templates.src
-                .replace('$src', src)
-                .replace(/\$dir/g, JSON.stringify(dir));
-    return templates.response
-      .replace('$module', JSON.stringify(module))
-      .replace('$src', JSON.stringify(src))
-      .replace('$deps', JSON.stringify(deps))
-      .replace('$isIndex', isIndex);
-  };
-
-  DynamicMode.prototype.loadAsset = function (url, fn) {
-    url = this.extractUrl(url);
-    Mode.prototype.loadAsset.call(this, url, fn);
-  };
-
-  DynamicMode.prototype.locateAsset = function (url, fn) {
-    if (url === '/browser_require.js')
-      return fn(null, path.dirname(__filename) + '/client/browser_require.js');
-    Mode.prototype.locateAsset.call(this, url, fn);
-  };
-
-  /**
-   * The incoming url does not always verbatim point to the src file.
-   * This is not the case for modules that live above the base dir
-   */
-  DynamicMode.prototype.extractUrl = function (url) {
-    // The following continuous block handles incoming requires
-    // that exist above the base dir
-    var uq = url.split('?')
-      , chain = uq[0].split('/')
-      , q = uq[1]
-      , match
-      , nAboveBase;
-    // prefix carries ..,..,.. information - i.e., how many levels above
-    if (q) {
-      match = q.match(/n=([^&]+)/);
-      if (match) nAboveBase = parseInt(match[1], 10);
-    }
-    if (nAboveBase) {
-      url = chain.join('/');
-      while (nAboveBase--) url = '/..' + url;
-    }
-    return url;
-  };
-
-  function CompileMode () {}
-
-  CompileMode.prototype.__proto__ = Mode.prototype;
-  CompileMode.prototype.loadSrc = function (url, location, fn) {
-  };
-
   return function (req, res, next) {
     mode.loadAsset(req.url, function (err, src) {
       if (err) {