NativeInput.hx 2.3 KB

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  1. /*
  2. * Copyright (C)2005-2017 Haxe Foundation
  3. *
  4. * Permission is hereby granted, free of charge, to any person obtaining a
  5. * copy of this software and associated documentation files (the "Software"),
  6. * to deal in the Software without restriction, including without limitation
  7. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8. * and/or sell copies of the Software, and to permit persons to whom the
  9. * Software is furnished to do so, subject to the following conditions:
  10. *
  11. * The above copyright notice and this permission notice shall be included in
  12. * all copies or substantial portions of the Software.
  13. *
  14. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20. * DEALINGS IN THE SOFTWARE.
  21. */
  22. package python.io;
  23. import haxe.io.Eof;
  24. import haxe.io.Input;
  25. import python.Bytearray;
  26. import python.lib.io.IOBase;
  27. import python.lib.io.RawIOBase;
  28. class NativeInput<T:IOBase> extends Input {
  29. var stream:T;
  30. var wasEof:Bool;
  31. function new (s:T) {
  32. this.stream = s;
  33. this.bigEndian = false;
  34. wasEof = false;
  35. if (!stream.readable()) throw "Write-only stream";
  36. }
  37. public var canSeek(get,never):Bool;
  38. inline function get_canSeek():Bool return stream.seekable();
  39. override public function close():Void
  40. {
  41. stream.close();
  42. }
  43. public function tell() : Int
  44. {
  45. return stream.tell();
  46. }
  47. function throwEof() {
  48. wasEof = true;
  49. throw new Eof();
  50. }
  51. public function eof() {
  52. return wasEof;
  53. }
  54. function readinto (b:Bytearray):Int {
  55. throw "abstract method, should be overriden";
  56. }
  57. function seek (p:Int, mode:sys.io.FileSeek) {
  58. throw "abstract method, should be overriden";
  59. }
  60. override public function readBytes(s:haxe.io.Bytes, pos:Int, len:Int):Int {
  61. if( pos < 0 || len < 0 || pos + len > s.length )
  62. throw haxe.io.Error.OutsideBounds;
  63. var ba = new Bytearray(len);
  64. var ret = readinto(ba);
  65. if (ret == 0)
  66. throwEof();
  67. s.blit(pos, haxe.io.Bytes.ofData(ba), 0, len);
  68. return ret;
  69. }
  70. }