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Binary library

Lets you download files as a binary stream, and upload them as multipart/form-data. Userscript library.

このスクリプトは単体で利用できません。右のようなメタデータを含むスクリプトから、ライブラリとして読み込まれます: // @require https://update.greatest.deepsurf.us/scripts/7079/28932/Binary%20library.js

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  1. // ==UserScript==
  2. // @name		Binary library
  3. // @namespace	shoecream@luelinks.net
  4. // @description	Lets you download files as a binary stream, and upload them as multipart/form-data. Userscript library.
  5. // @include		*
  6. // @grant		GM_xmlhttpRequest
  7. // @license		cc-by-sa
  8. // ==/UserScript==
  9.  
  10. BinaryRes = {};
  11.  
  12. BinaryRes.get = function (object)
  13.  {
  14. 	var request = 
  15. 	{
  16. 		method: 'GET',
  17. 		url: object.url,
  18. 		overrideMimeType: 'text/plain; charset=x-user-defined',
  19. 		binary: true,
  20. 		onload: object.callback,
  21. 	};
  22.  
  23. 	if (object.override) 
  24. 	{
  25. 		for (var attr in object.override) request[attr] = object.override[attr]
  26. 	}
  27.  
  28. 	GM_xmlhttpRequest(request);
  29. }
  30.  
  31. BinaryRes._clean = function (bytes) 
  32. {
  33. 	var binarray = [];
  34. 	[].forEach.call(bytes, function (byte) 
  35. 	{
  36. 		binarray.push(String.fromCharCode(byte.charCodeAt(0) & 0xff));
  37. 	});
  38. 	return binarray.join('');
  39. }
  40.  
  41. BinaryRes._bound = function()
  42.  {
  43. 	var z = 98729145294692;
  44. 	var a = 12400722650394;
  45. 	return Array(28).join('-') + Math.floor(Math.random() * (z - a)) + a;
  46. }
  47.  
  48. BinaryRes._typeof = function(value) {
  49. 	// from crockford
  50. 	var s = typeof value;
  51. 	if (s === 'object') {
  52. 		if (value) {
  53. 			if (typeof value.length === 'number' &&
  54. 				!(value.propertyIsEnumerable('length')) &&
  55. 				typeof value.splice === 'function') {
  56. 				s = 'array';
  57. 			}
  58. 		} else {
  59. 			s = 'null';
  60. 		}
  61. 	}
  62. 	return s;
  63. }
  64.  
  65. BinaryRes.post = function (obj) 
  66. {
  67. 	// url, callback, data
  68. 	var build = [];
  69. 	var boundary = BinaryRes._bound();
  70. 	for (var name in obj.data)
  71. 	 {
  72. 		if (obj.data.hasOwnProperty(name))
  73. 		{
  74. 			build.push('--' + boundary);
  75. 			var disp = 'Content-Disposition: form-data; name="' + name + '"';
  76. 			if (BinaryRes._typeof(obj.data[name]) == 'object')
  77. 			 {
  78. 				var value = BinaryRes._clean(obj.data[name].value);
  79. 				if (obj.data[name].filename)
  80. 					disp += '; filename="' + obj.data[name].filename + '"';
  81. 				build.push(disp);
  82. 				build.push('Content-type: ' + obj.data[name].type);
  83. 			} else 
  84. 			{
  85. 				var value = obj.data[name];
  86. 				build.push(disp);
  87. 			}
  88. 			build.push('');
  89. 			build.push(value);
  90. 		}
  91. 	}
  92. 	build.push('--' + boundary + '--');
  93. 	var data = build.join('\r\n');
  94. 	var request = 
  95. 	{
  96. 		method: 'POST',
  97. 		url: obj.url,
  98. 		binary: true,
  99. 		headers: 
  100. 		{
  101. 			"Content-Type": 'multipart/form-data; boundary=' + boundary,
  102. 			"Content-Length": data.length
  103. 		},
  104. 		data: data,
  105. 		onload: obj.callback
  106. 	};
  107. 	if (obj.override) 
  108. 	{
  109. 		for (var attr in obj.override) request[attr] = obj.override[attr]
  110. 	}
  111. 	GM_xmlhttpRequest(request);
  112. }
  113.  
  114. BinaryRes.guessType = function(stream) 
  115. {
  116. 	if (!stream) return;
  117. 	var dict = 
  118. 	[
  119. 		[0, 3, '\xFF\xD8\xFF', 'image/jpeg'],
  120. 		[1, 4, 'PNG', 'image/png'],
  121. 		[0, 3, 'GIF', 'image/gif'],
  122. 		[0, 4, '%PDF', 'application/pdf'],
  123. 	]
  124. 	stream = BinaryRes._clean(stream);
  125. 	for (var ii = 0; ii < dict.length; ii++) 
  126. 	{
  127. 		if (stream.slice(dict[ii][0], dict[ii][1]) === dict[ii][2])
  128. 			return dict[ii][3];
  129. 	}
  130. }