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) %s\n", target , this.cur_sha , new_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                 uint8[] zero = { 0 };
  42                 GLib.FileUtils.get_data(tfn, out data);
  43
  44                 var  file = File.new_for_path (tfn);
  45
  46                 var info = file.query_info(
  47                                  "standard::*",
  48                                 FileQueryInfoFlags.NONE
  49                 );
  50                 var csdata = new GLib.ByteArray.take("blob %s".printf(info.get_size().to_string()).data);
  51                 csdata.append(zero);
  52                 csdata.append(data);
  53
  54                 // git method... blob %d\0...string...
  55                 this.cur_sha = GLib.Checksum.compute_for_data(GLib.ChecksumType.SHA1, csdata.data       );
  56         }
  57
  58 }
  59
  60
  61 public class Resources : Object
  62 {
  63
  64      public signal void updateProgress(uint cur_pos);
  65
  66      static Resources singleton_val;
  67
  68
  69      Gee.ArrayList<ResourcesItem> fetch_files;
  70
  71      public static Resources singleton()
  72      {
  73         if (singleton_val == null) {
  74             singleton_val = new Resources();
  75             singleton_val.ref();
  76         }
  77         return singleton_val;
  78
  79      }
  80          public Resources ()
  81          {
  82
  83                 string[] avail_files = {
  84                         "roodata.json",
  85                         "*",
  86                         "Editors/*.js"
  87
  88                 };
  89                 this.fetch_files = new Gee.ArrayList<ResourcesItem>();
  90                 for (var i=0;i < avail_files.length; i++) {
  91                         var target = avail_files[i];
  92                         var src = "https://raw.githubusercontent.com/roojs/app.Builder.js/master/resources/" + target;
  93
  94                         if (target == "roodata.json") {
  95                                 src = "https://raw.githubusercontent.com/roojs/roojs1/master/docs/json/roodata.json";
  96                                 //src = "http://git.roojs.org/?p=roojs1;a=blob_plain;f=docs/json/roodata.json";
  97                         }
  98                         if (target.contains("*")) {
  99                                 var split = target.split("*");
 100                                 src = "https://api.github.com/repos/roojs/app.Builder.js/contents/resources/" + split[0];
 101                         }
 102
 103                         this.fetch_files.add(new ResourcesItem(src,target, ""));
 104                 }
 105
 106
 107
 108         }
 109
 110
 111
 112      int fetch_pos = 0;
 113      public void fetchStart()
 114      {
 115             if (this.fetch_pos > 0) { // only fetch one at a time...
 116                 return;
 117             }
 118             this.fetch_pos =0;
 119             this.fetchNext();
 120
 121      }
 122      public void fetchNext()
 123     {
 124         var cur = this.fetch_pos;
 125         this.fetch_pos++;
 126         this.updateProgress(this.fetch_pos); // min=0;
 127
 128
 129         if (this.fetch_pos > this.fetch_files.size) {
 130                          this.updateProgress(0);
 131                      this.fetch_pos = 0;
 132                      return;
 133
 134                 }
 135
 136                 this.fetchResourceFrom ( this.fetch_files.get(cur) );
 137
 138
 139          }
 140          public void checkResources()
 141          {
 142                 bool needsload = false;
 143
 144
 145                 for (var i = 0; i <  this.fetch_files.size; i++ ) {
 146                         if (this.fetch_files.get(i).target.contains("*")) {
 147                                 continue;
 148                         }
 149                         if (!FileUtils.test(
 150                                 BuilderApplication.configDirectory() + "/resources/"  + this.fetch_files.get(i).target,
 151                                 FileTest.EXISTS
 152                                 )) {
 153                                 needsload = true;
 154                         }
 155                 }
 156                 if (!needsload) {
 157                         return;
 158                 }
 159                 this.fetchStart();
 160          }
 161
 162         public void parseDirectory(string json, string target)
 163         {
 164                 var pa = new Json.Parser();
 165                 pa.load_from_data(json);
 166                 var node = pa.get_root();
 167                 if (node.get_node_type () != Json.NodeType.ARRAY) {
 168                         return;
 169                         //throw new Error.INVALID_FORMAT ("Unexpected element type %s", node.type_name ());
 170                 }
 171
 172                 var split = target.split("*");
 173                 var ar = node.get_array ();
 174                 for(var i = 0; i < ar.get_length(); i++) {
 175                         var ob = ar.get_object_element(i);
 176                         var n = ob.get_string_member("name");
 177                         if (ob.get_string_member("type") == "dir") {
 178                                 continue;
 179                         }
 180                         if (split.length > 1 && !n.has_suffix(split[1])) {
 181                                 // not needed..
 182                                 continue;
 183                         }
 184                         if (this.files_has_target(split[0] + n)) {
 185                                 continue;
 186                         }
 187                         var src = "https://raw.githubusercontent.com/roojs/app.Builder.js/master/resources/" + split[0] + n;
 188                         var add = new ResourcesItem(src, split[0] + n, ob.get_string_member("sha") );
 189                         //add.new_sha = ob.get_string_member("sha");
 190                         this.fetch_files.add(add);
 191
 192                 }
 193         }
 194         public bool files_has_target(string target)
 195         {
 196                 for (var i = 0; i <  this.fetch_files.size; i++ ) {
 197                         if (this.fetch_files.get(i).target == target) {
 198                                 return true;
 199                         }
 200                 }
 201                 return false;
 202
 203         }
 204
 205
 206
 207
 208     public void fetchResourceFrom(ResourcesItem item)
 209     {
 210                 if (item.new_sha != "" && item.new_sha == item.cur_sha) {
 211                         this.fetchNext();
 212                         return;
 213                 }
 214
 215                 // fetch...
 216                 print("downloading %s \nto : %s\n", item.src,item.target);
 217                 var session = new Soup.Session ();
 218                 session.user_agent = "App Builder ";
 219             var message = new Soup.Message ("GET",  item.src );
 220         session.queue_message (message, (sess, mess) => {
 221
 222                         if (item.target.contains("*")) {
 223                                 // then it's a directory listing in JSON, and we need to add any new items to our list..
 224                                 // it's used to fetch Editors (and maybe other stuff..)
 225                                 this.parseDirectory((string) message.response_body.data,item.target );
 226                                 this.fetchNext();
 227                                 return;
 228                         }
 229
 230
 231                         var tfn = BuilderApplication.configDirectory() + "/resources/" + item.target;
 232
 233
 234                         // create parent directory if needed
 235                         if (!GLib.FileUtils.test (GLib.Path.get_dirname(tfn), FileTest.IS_DIR)) {
 236                                 var f =  GLib.File.new_for_path(GLib.Path.get_dirname(tfn));
 237                                 f.make_directory_with_parents ();
 238                         }
 239
 240
 241
 242
 243                         // set data??? - if it's binary?
 244             FileUtils.set_contents(  tfn, (string) message.response_body.data );
 245
 246             switch (item.target) {
 247                                 case "Gir.overides":
 248                                         Palete.Gir.factory("Gtk").loadOverrides(true);
 249                                         break;
 250
 251                                 case "GtkUsage.txt":
 252                                         Palete.factory("Gtk").load();
 253                                         break;
 254
 255                                 case "roodata.json":
 256                                         Palete.factory("Roo").classes  = null;
 257                                         Palete.factory("Roo").load();
 258                                         break;
 259
 260                                 default:
 261                                         break;
 262                         }
 263
 264
 265
 266
 267
 268
 269             this.fetchNext();
 270
 271         });
 272
 273
 274     }
 275 }