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annotate dwt/browser/InputStream.d @ 5:1a8b3cb347e0

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Fix Ctors to 'this'
author Frank Benoit <benoit@tionex.de>
date Wed, 27 Aug 2008 14:02:31 +0200
parents 380af2bdd8e5
children e831403a80a9
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1 /*******************************************************************************
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2 * Copyright (c) 2003, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *******************************************************************************/
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11 module dwt.browser.InputStream;
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12
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13 import dwt.dwthelper.utils;
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14
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15 import dwt.internal.C;
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16 import dwt.internal.mozilla.XPCOM;
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17 import dwt.internal.mozilla.XPCOMObject;
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18 import dwt.internal.mozilla.nsID;
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19 import dwt.internal.mozilla.nsIInputStream;
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20 import dwt.internal.mozilla.nsISupports;
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21
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22 class InputStream {
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23 XPCOMObject inputStream;
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24 int refCount = 0;
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25
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26 byte[] buffer;
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27 int index = 0;
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28
5
1a8b3cb347e0 Fix Ctors to 'this'
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29 this (byte[] buffer) {
0
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30 this.buffer = buffer;
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31 index = 0;
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32 createCOMInterfaces ();
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33 }
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34
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35 int AddRef () {
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36 refCount++;
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37 return refCount;
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38 }
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39
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40 void createCOMInterfaces () {
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41 /* Create each of the interfaces that this object implements */
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42 inputStream = new XPCOMObject (new int[] {2, 0, 0, 0, 1, 3, 4, 1}) {
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43 public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
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44 public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
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45 public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
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46 public int /*long*/ method3 (int /*long*/[] args) {return Close ();}
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47 public int /*long*/ method4 (int /*long*/[] args) {return Available (args[0]);}
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48 public int /*long*/ method5 (int /*long*/[] args) {return Read (args[0], (int)/*64*/args[1], args[2]);}
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49 public int /*long*/ method6 (int /*long*/[] args) {return ReadSegments (args[0], args[1], (int)/*64*/args[2], args[3]);}
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50 public int /*long*/ method7 (int /*long*/[] args) {return IsNonBlocking (args[0]);}
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51 };
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52 }
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53
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54 void disposeCOMInterfaces () {
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55 if (inputStream !is null) {
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56 inputStream.dispose ();
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57 inputStream = null;
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58 }
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59 }
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60
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61 int /*long*/ getAddress () {
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62 return inputStream.getAddress ();
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63 }
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64
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65 int QueryInterface (int /*long*/ riid, int /*long*/ ppvObject) {
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66 if (riid is 0 || ppvObject is 0) return XPCOM.NS_ERROR_NO_INTERFACE;
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67 nsID guid = new nsID ();
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68 XPCOM.memmove (guid, riid, nsID.sizeof);
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69
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70 if (guid.Equals (nsISupports.NS_ISUPPORTS_IID)) {
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71 XPCOM.memmove (ppvObject, new int /*long*/[] {inputStream.getAddress ()}, C.PTR_SIZEOF);
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72 AddRef ();
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73 return XPCOM.NS_OK;
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74 }
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75 if (guid.Equals (nsIInputStream.NS_IINPUTSTREAM_IID)) {
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76 XPCOM.memmove (ppvObject, new int /*long*/[] {inputStream.getAddress ()}, C.PTR_SIZEOF);
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77 AddRef ();
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78 return XPCOM.NS_OK;
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79 }
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80 XPCOM.memmove (ppvObject, new int /*long*/[] {0}, C.PTR_SIZEOF);
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81 return XPCOM.NS_ERROR_NO_INTERFACE;
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82 }
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83
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84 int Release () {
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85 refCount--;
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86 if (refCount is 0) disposeCOMInterfaces ();
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87 return refCount;
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88 }
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89
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90 /* nsIInputStream implementation */
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91
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92 int Close () {
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93 buffer = null;
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94 index = 0;
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95 return XPCOM.NS_OK;
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96 }
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97
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98 int Available (int /*long*/ _retval) {
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99 int available = buffer is null ? 0 : buffer.length - index;
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100 XPCOM.memmove (_retval, new int[] {available}, 4);
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101 return XPCOM.NS_OK;
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102 }
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103
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104 int Read(int /*long*/ aBuf, int aCount, int /*long*/ _retval) {
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105 int max = Math.min (aCount, buffer is null ? 0 : buffer.length - index);
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106 if (max > 0) {
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107 byte[] src = new byte[max];
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108 System.arraycopy (buffer, index, src, 0, max);
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109 XPCOM.memmove (aBuf, src, max);
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110 index += max;
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111 }
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112 XPCOM.memmove(_retval, new int[] {max}, 4);
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113 return XPCOM.NS_OK;
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114 }
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115
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116 int ReadSegments (int /*long*/ aWriter, int /*long*/ aClosure, int aCount, int /*long*/ _retval) {
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117 int max = Math.min (aCount, buffer is null ? 0 : buffer.length - index);
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118 int cnt = max;
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119 while (cnt > 0) {
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120 int[] aWriteCount = new int[1];
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121 int /*long*/ rc = XPCOM.Call (aWriter, getAddress (), aClosure, buffer, index, cnt, aWriteCount);
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122 if (rc !is XPCOM.NS_OK) break;
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123 index += aWriteCount[0];
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124 cnt -= aWriteCount[0];
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125 }
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126 XPCOM.memmove (_retval, new int[] {max - cnt}, 4);
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127 return XPCOM.NS_OK;
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128 }
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129
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130 int IsNonBlocking (int /*long*/ _retval) {
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131 /* blocking */
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132 XPCOM.memmove (_retval, new int[] {0}, 4);
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133 return XPCOM.NS_OK;
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134 }
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135 }