Evergreen/staff_client/chrome/content/evergreen/util/file.js

   1 sdump('D_TRACE','Loading file.js\n');
   2
   3 var dirService = Components.classes["@mozilla.org/file/directory_service;1"].
   4         getService( Components.interfaces.nsIProperties );
   5
   6 function create_input_stream(file) {
   7         try {
   8                 if (typeof(file)=='string') file = get_file( file );
   9                 var f = Components.classes["@mozilla.org/network/file-input-stream;1"]
  10                         .createInstance(Components.interfaces.nsIFileInputStream);
  11                 if (file && file.exists()) {
  12                         f.init(file, 0x01, 0, 0);
  13                         var s = Components.classes["@mozilla.org/scriptableinputstream;1"]
  14                                 .createInstance(Components.interfaces.nsIScriptableInputStream);
  15                         if (f) {
  16                                 s.init(f);
  17                                 return s;
  18                         }
  19                 }
  20         } catch(E) {
  21                 sdump('D_ERROR', E);
  22         }
  23         return null;
  24 }
  25
  26 function create_output_stream(file) {
  27         try {
  28                 if (typeof(file)=='string') file = get_file( file );
  29                 var f = Components.classes["@mozilla.org/network/file-output-stream;1"]
  30                         .createInstance(Components.interfaces.nsIFileOutputStream);
  31                 if (file) {
  32                         if (! file.exists()) file.create( 0, 0640 );
  33                         f.init(file, 0x02 | 0x08 | 0x20, 0644, 0);
  34                         return f;
  35                 }
  36         } catch(E) {
  37                 sdump('D_ERROR', E);
  38         }
  39         return null;
  40 }
  41
  42 function get_file( fname ) {
  43         try {
  44                 file = dirService.get( "AChrom",  Components.interfaces.nsIFile );
  45                 file.append(mw.myPackageDir); file.append("content"); file.append("conf"); file.append("fname");
  46                 return file;
  47         } catch(E) {
  48                 sdump('D_ERROR', E);
  49                 return null;
  50         }
  51 }