From d8bdc059efc261bf52733287669cd1b1dc394792 Mon Sep 17 00:00:00 2001
From: yann300 <yann.levreau@gmail.com>
Date: Mon, 4 Dec 2017 16:18:31 +0100
Subject: [PATCH] add BasicReadOnlyProvider (swarm, github, gist, ipfs)

---
 src/app.js                             |   5 ++
 src/app/files/basicReadOnlyExplorer.js | 102 +++++++++++++++++++++++++
 2 files changed, 107 insertions(+)
 create mode 100644 src/app/files/basicReadOnlyExplorer.js

diff --git a/src/app.js b/src/app.js
index 3eb4c96352..278ab5f9c6 100644
--- a/src/app.js
+++ b/src/app.js
@@ -36,6 +36,7 @@ var handleImports = require('./app/compiler/compiler-imports')
 var FileManager = require('./app/files/fileManager')
 var ContextualListener = require('./app/editor/contextualListener')
 var ContextView = require('./app/editor/contextView')
+var BasicReadOnlyExplorer = require('./app/files/basicReadOnlyExplorer')
 
 var styleGuide = remixLib.ui.styleGuide
 var styles = styleGuide()
@@ -111,6 +112,10 @@ class App {
     self._api.filesProviders = {}
     self._api.filesProviders['browser'] = new Browserfiles(fileStorage)
     self._api.filesProviders['localhost'] = new SharedFolder(new Remixd())
+    self._api.filesProviders['swarm'] = new BasicReadOnlyExplorer('swarm')
+    self._api.filesProviders['github'] = new BasicReadOnlyExplorer('github')
+    self._api.filesProviders['gist'] = new BasicReadOnlyExplorer('gist')
+    self._api.filesProviders['ipfs'] = new BasicReadOnlyExplorer('ipfs')
     self._view = {}
     self._components = {}
     self.data = {
diff --git a/src/app/files/basicReadOnlyExplorer.js b/src/app/files/basicReadOnlyExplorer.js
new file mode 100644
index 0000000000..5285da3930
--- /dev/null
+++ b/src/app/files/basicReadOnlyExplorer.js
@@ -0,0 +1,102 @@
+'use strict'
+var EventManager = require('remix-lib').EventManager
+
+class SwarmExplorer {
+  constructor (type) {
+    this.event = new EventManager()
+    this.files = {}
+    this.type = type
+  }
+
+  close (cb) {
+    this.files = {}
+    cb()
+  }
+
+  init (cb) {
+    this.files = {}
+  }
+
+  exists (path) {
+    if (!this.files) return false
+    return this.files[path] !== undefined
+  }
+
+  get (path, cb) {
+    var content = this.files[path]
+    if (cb) {
+      cb(null, content)
+    }
+    return content
+  }
+
+  set (path, content, cb) {
+    return true
+  }
+
+  addReadOnly (path, content) {
+    this.files[this.type + '/' + path] = content
+    this.event.trigger('fileAdded', [this.type + '/' + path, true])
+    return true
+  }
+
+  isReadOnly (path) {
+    return true
+  }
+
+  remove (path) {
+    delete this.files[path]
+  }
+
+  rename (oldPath, newPath, isFolder) {
+    return true
+  }
+
+  list () {
+    return this.files
+  }
+
+  //
+  // Tree model for files
+  // {
+  //   'a': { }, // empty directory 'a'
+  //   'b': {
+  //     'c': {}, // empty directory 'b/c'
+  //     'd': { '/readonly': true, '/content': 'Hello World' } // files 'b/c/d'
+  //     'e': { '/readonly': false, '/path': 'b/c/d' } // symlink to 'b/c/d'
+  //     'f': { '/readonly': false, '/content': '<executable>', '/mode': 0755 }
+  //   }
+  // }
+  //
+  listAsTree () {
+    function hashmapize (obj, path, val) {
+      var nodes = path.split('/')
+      var i = 0
+
+      for (; i < nodes.length - 1; i++) {
+        var node = nodes[i]
+        if (obj[node] === undefined) {
+          obj[node] = {}
+        }
+        obj = obj[node]
+      }
+
+      obj[nodes[i]] = val
+    }
+
+    var tree = {}
+
+    var self = this
+    // This does not include '.remix.config', because it is filtered
+    // inside list().
+    Object.keys(this.list()).forEach(function (path) {
+      hashmapize(tree, path, {
+        '/readonly': self.isReadOnly(path),
+        '/content': self.get(path)
+      })
+    })
+    return tree
+  }
+}
+
+module.exports = SwarmExplorer