git.roojs.org Git - app.Builder.js/blob - src/Resources.vala

   1 /**
   2  * Resources
   3  *
   4  * Idea is to manage resourse used by the app.
   5  *
   6  * The original code downloaded all the resources before it renders the main window
   7  *
   8  * This is a bit annoying as although they do change quite a bit, it's not on every app start
   9  *
  10  * So the Resource fetching behaviour should be a button on the File view page
  11  * That starts the refresh of the resources.
  12  *
  13  * I'm not quite sure how we should flow this - if we do them all at once.. might be a bit of a server
  14  * overload... so sequentially may be best...
  15 */
  16
  17 public class ResourcesItem : Object {
  18         public string target;
  19         public string src;
  20         public string new_sha;
  21         public string cur_sha;
  22         public ResourcesItem(string src, string target, string new_sha)
  23         {
  24                 this.target = target;
  25                 this.src = src;
  26                 this.new_sha = new_sha;
  27                 this.cur_sha = "";
  28                 this.update_cur_sha();
  29                 print("New ResourcesItem %s (%s) => %s\n", target , this.cur_sha ,src);
  30         }
  31         public void update_cur_sha()
  32         {
  33                 if (this.target.contains("*")) {
  34                         return;
  35                 }
  36                 var tfn = BuilderApplication.configDirectory() + "/resources/" + this.target;
  37                 if (!GLib.FileUtils.test (tfn, FileTest.IS_REGULAR)) {
  38                         return;
  39                 }
  40                 uint8[] data;
  41                 GLib.FileUtils.get_data(tfn, out data);
  42
  43                 var  file = File.new_for_path (tfn);
  44
  45                 var info = file.query_info(
  46                                  "standard::*",
  47                                 FileQueryInfoFlags.NONE
  48                 );
  49                 var csdata = new GLib.ByteArray.take("blob %s\0".printf(info.get_size().to_string()).data);
  50                 csdata.append(data);
  51
  52                 // git method... blob %d\0...string...
  53                 this.cur_sha = GLib.Checksum.compute_for_data(GLib.ChecksumType.SHA1, csdata.data       );
  54         }
  55
  56 }
  57
  58
  59 public class Resources : Object
  60 {
  61
  62      public signal void updateProgress(uint cur_pos);
  63
  64      static Resources singleton_val;
  65
  66
  67      Gee.ArrayList<ResourcesItem> fetch_files;
  68
  69      public static Resources singleton()
  70      {
  71         if (singleton_val == null) {
  72             singleton_val = new Resources();
  73             singleton_val.ref();
  74         }
  75         return singleton_val;
  76
  77      }
  78          public Resources ()
  79          {
  80
  81                 string[] avail_files = {
  82                         "roodata.json",
  83                         "*",
  84                         "Editors/*.js"
  85
  86                 };
  87                 this.fetch_files = new Gee.ArrayList<ResourcesItem>();
  88                 for (var i=0;i < avail_files.length; i++) {
  89                         var target = avail_files[i];
  90                         var src = "https://raw.githubusercontent.com/roojs/app.Builder.js/master/resources/" + target;
  91
  92                         if (target == "roodata.json") {
  93                                 src = "https://raw.githubusercontent.com/roojs/roojs1/master/docs/json/roodata.json";
  94                                 //src = "http://git.roojs.org/?p=roojs1;a=blob_plain;f=docs/json/roodata.json";
  95                         }
  96                         if (target.contains("*")) {
  97                                 var split = target.split("*");
  98                                 src = "https://api.github.com/repos/roojs/app.Builder.js/contents/resources/" + split[0];
  99                         }
 100
 101                         this.fetch_files.add(new ResourcesItem(src,target));
 102                 }
 103
 104
 105
 106         }
 107
 108
 109
 110      int fetch_pos = 0;
 111      public void fetchStart()
 112      {
 113             if (this.fetch_pos > 0) { // only fetch one at a time...
 114                 return;
 115             }
 116             this.fetch_pos =0;
 117             this.fetchNext();
 118
 119      }
 120      public void fetchNext()
 121     {
 122         var cur = this.fetch_pos;
 123         this.fetch_pos++;
 124         this.updateProgress(this.fetch_pos); // min=0;
 125
 126
 127         if (this.fetch_pos > this.fetch_files.size) {
 128                          this.updateProgress(0);
 129                      this.fetch_pos = 0;
 130                      return;
 131
 132                 }
 133
 134                 this.fetchResourceFrom ( this.fetch_files.get(cur) );
 135
 136
 137          }
 138          public void checkResources()
 139          {
 140                 bool needsload = false;
 141
 142
 143                 for (var i = 0; i <  this.fetch_files.size; i++ ) {
 144
 145                         if (!FileUtils.test(
 146                                 BuilderApplication.configDirectory() + "/resources/"  + this.fetch_files.get(i).target,
 147                                 FileTest.EXISTS
 148                                 )) {
 149                                 needsload = true;
 150                         }
 151                 }
 152                 if (!needsload) {
 153                         return;
 154                 }
 155                 this.fetchStart();
 156          }
 157
 158         public void parseDirectory(string json, string target)
 159         {
 160                 var pa = new Json.Parser();
 161                 pa.load_from_data(json);
 162                 var node = pa.get_root();
 163                 if (node.get_node_type () != Json.NodeType.ARRAY) {
 164                         return;
 165                         //throw new Error.INVALID_FORMAT ("Unexpected element type %s", node.type_name ());
 166                 }
 167
 168                 var split = target.split("*");
 169                 var ar = node.get_array ();
 170                 for(var i = 0; i < ar.get_length(); i++) {
 171                         var ob = ar.get_object_element(i);
 172                         var n = ob.get_string_member("name");
 173                         if (ob.get_string_member("type") == "dir") {
 174                                 continue;
 175                         }
 176                         if (split.length > 1 && !n.has_suffix(split[1])) {
 177                                 // not needed..
 178                                 continue;
 179                         }
 180                         if (this.files_has_target(split[0] + n)) {
 181                                 continue;
 182                         }
 183                         var src = "https://raw.githubusercontent.com/roojs/app.Builder.js/master/resources/" + split[0] + n;
 184                         var add = new ResourcesItem(src, split[0] + n, ob.get_string_member("sha") );
 185                         add.new_sha = ob.get_string_member("sha");
 186                         this.fetch_files.add(add);
 187
 188                 }
 189         }
 190         public bool files_has_target(string target)
 191         {
 192                 for (var i = 0; i <  this.fetch_files.size; i++ ) {
 193                         if (this.fetch_files.get(i).target == target) {
 194                                 return true;
 195                         }
 196                 }
 197                 return false;
 198
 199         }
 200
 201
 202
 203
 204     public void fetchResourceFrom(ResourcesItem item)
 205     {
 206                 if (item.new_sha != "" && item.new_sha == item.cur_sha) {
 207                         this.fetchNext();
 208                         return;
 209                 }
 210
 211                 // fetch...
 212                 print("downloading %s \nto : %s\n", item.src,item.target);
 213                 var session = new Soup.Session ();
 214                 session.user_agent = "App Builder ";
 215             var message = new Soup.Message ("GET",  item.src );
 216         session.queue_message (message, (sess, mess) => {
 217
 218                         if (item.target.contains("*")) {
 219                                 // then it's a directory listing in JSON, and we need to add any new items to our list..
 220                                 // it's used to fetch Editors (and maybe other stuff..)
 221                                 this.parseDirectory((string) message.response_body.data,item.target );
 222                                 this.fetchNext();
 223                                 return;
 224                         }
 225
 226
 227                         var tfn = BuilderApplication.configDirectory() + "/resources/" + item.target;
 228
 229
 230                         // create parent directory if needed
 231                         if (!GLib.FileUtils.test (GLib.Path.get_dirname(tfn), FileTest.IS_DIR)) {
 232                                 var f =  GLib.File.new_for_path(GLib.Path.get_dirname(tfn));
 233                                 f.make_directory_with_parents ();
 234                         }
 235
 236
 237
 238
 239                         // set data??? - if it's binary?
 240             FileUtils.set_contents(  tfn, (string) message.response_body.data );
 241
 242             switch (item.target) {
 243                                 case "Gir.overides":
 244                                         Palete.Gir.factory("Gtk").loadOverrides(true);
 245                                         break;
 246
 247                                 case "GtkUsage.txt":
 248                                         Palete.factory("Gtk").load();
 249                                         break;
 250
 251                                 case "roodata.json":
 252                                         Palete.factory("Roo").classes  = null;
 253                                         Palete.factory("Roo").load();
 254                                         break;
 255
 256                                 default:
 257                                         break;
 258                         }
 259
 260
 261
 262
 263
 264
 265             this.fetchNext();
 266
 267         });
 268
 269
 270     }
 271 }