modules/minibuffer-read-file.js

   1 /**
   2  * (C) Copyright 2008 Jeremy Maitin-Shepard
   3  * (C) Copyright 2008 Nelson Elhage
   4  *
   5  * Use, modification, and distribution are subject to the terms specified in the
   6  * COPYING file.
   7 **/
   8
   9 require("io.js");
  10
  11 minibuffer.prototype.read_file_path = function () {
  12     keywords(arguments, $prompt = "File:", $initial_value = default_directory.path,
  13              $history = "file");
  14     var result = yield this.read(
  15         $prompt = arguments.$prompt,
  16         $initial_value = arguments.$initial_value,
  17         $history = arguments.$history,
  18         $completer = file_path_completer(),
  19         $auto_complete = true);
  20     yield co_return(result);
  21 }
  22
  23 minibuffer.prototype.read_file = function () {
  24     var result = yield this.read_file_path(forward_keywords(arguments));
  25     yield co_return(get_file(result));
  26 };
  27
  28 // FIXME
  29 minibuffer.prototype.read_existing_file = minibuffer.prototype.read_file;
  30 minibuffer.prototype.read_directory_path = minibuffer.prototype.read_file_path;
  31 minibuffer.prototype.read_existing_directory_path = minibuffer.prototype.read_directory_path;
  32
  33 minibuffer.prototype.read_file_check_overwrite = function () {
  34     keywords(arguments);
  35     var initial_value = arguments.$initial_value;
  36     do {
  37         var path = yield this.read_file_path(forward_keywords(arguments), $initial_value = initial_value);
  38
  39         var file = get_file(path);
  40
  41         if (file.exists()) {
  42             var overwrite = yield this.read_yes_or_no($prompt = "Overwrite existing file " + path + "?");
  43             if (!overwrite) {
  44                 initial_value = path;
  45                 continue;
  46             }
  47         }
  48         yield co_return(file);
  49     } while (true);
  50 };
  51
  52 function file_path_completer() {
  53     return function(input, pos, conservative) {
  54         var f = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
  55         var ents = [];
  56         var dir;
  57         try {
  58             f.initWithPath(input);
  59             if(f.exists() && f.isDirectory())
  60                 dir = f;
  61             else
  62                 dir = f.parent;
  63             if(!dir.exists()) return null;
  64             var iter = dir.directoryEntries;
  65             while(iter.hasMoreElements()) {
  66                 var e = iter.getNext().QueryInterface(Ci.nsIFile);
  67                 ents.push(e.path);
  68             }
  69         } catch(e) {
  70             return null;
  71         }
  72         function id(x) { return x};
  73         return prefix_completer($completions = ents,
  74                                 $get_string  = id,
  75                                 $get_description = id,
  76                                 $get_value = id)(input, pos, conservative);
  77     };
  78 }