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annotate dwt/browser/InputStream.d @ 346:2e591eb01162

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Browser Package now compiles (phase 2 complete)
author John Reimer <terminal.node@gmail.com>
date Wed, 29 Oct 2008 20:06:08 -0700
parents 5abc6f7f7a95
children 9a4d7706df52
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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 * Port to the D programming language:
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11 * John Reimer <terminal.node@gmail.com>
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12 *******************************************************************************/
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13 module dwt.browser.InputStream;
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14
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15 import Math = tango.math.Math;
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16 import dwt.dwthelper.utils;
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17
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18 import XPCOM = dwt.internal.mozilla.XPCOM;
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19
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20 import dwt.internal.mozilla.nsID;
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21 import dwt.internal.mozilla.nsIInputStream;
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22 import dwt.internal.mozilla.nsISupports;
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23 import dwt.internal.mozilla.Common;
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24
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25 class InputStream : nsIInputStream {
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26 //XPCOMObject inputStream;
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27 int refCount = 0;
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28
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29 byte[] buffer;
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30 int index = 0;
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31
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32 this (byte[] buffer) {
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33 this.buffer = buffer;
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34 index = 0;
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35 //createCOMInterfaces ();
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36 }
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37
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38 nsrefcnt AddRef () {
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39 refCount++;
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40 return refCount;
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41 }
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42 /+
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43 void createCOMInterfaces () {
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44 /* Create each of the interfaces that this object implements */
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45 inputStream = new XPCOMObject (new int[] {2, 0, 0, 0, 1, 3, 4, 1}) {
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46 public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
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47 public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
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48 public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
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49 public int /*long*/ method3 (int /*long*/[] args) {return Close ();}
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50 public int /*long*/ method4 (int /*long*/[] args) {return Available (args[0]);}
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51 public int /*long*/ method5 (int /*long*/[] args) {return Read (args[0], (int)/*64*/args[1], args[2]);}
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52 public int /*long*/ method6 (int /*long*/[] args) {return ReadSegments (args[0], args[1], (int)/*64*/args[2], args[3]);}
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53 public int /*long*/ method7 (int /*long*/[] args) {return IsNonBlocking (args[0]);}
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54 };
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55 }
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56
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57 void disposeCOMInterfaces () {
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58 if (inputStream !is null) {
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59 inputStream.dispose ();
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60 inputStream = null;
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61 }
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62 }
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63
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64 int /*long*/ getAddress () {
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65 return inputStream.getAddress ();
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66 }
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67 +/
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68 nsresult QueryInterface (nsID* riid, void** ppvObject) {
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69 if (riid is null || ppvObject is null) return XPCOM.NS_ERROR_NO_INTERFACE;
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70 //nsID guid = new nsID ();
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71 //XPCOM.memmove (guid, riid, nsID.sizeof);
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72
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73 if (*riid == nsISupports.IID) {
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74 *ppvObject = cast(void*)cast(nsISupports)this;
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75 AddRef ();
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76 return XPCOM.NS_OK;
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77 }
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78 if (*riid == nsIInputStream.IID) {
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79 *ppvObject = cast(void*)cast(nsIInputStream)this;
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80 AddRef ();
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81 return XPCOM.NS_OK;
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82 }
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83 *ppvObject = null;
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84 return XPCOM.NS_ERROR_NO_INTERFACE;
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85 }
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86
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87 nsrefcnt Release () {
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88 refCount--;
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89 //if (refCount is 0) disposeCOMInterfaces ();
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90 return refCount;
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91 }
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92
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93 /* nsIInputStream implementation */
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94
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95 nsresult Close () {
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96 buffer = null;
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97 index = 0;
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98 return XPCOM.NS_OK;
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99 }
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100
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101 nsresult Available (PRUint32* _retval) {
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102 PRUint32 available = buffer is null ? 0 : buffer.length - index;
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103 *_retval = available;
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104 //XPCOM.memmove (_retval, new int[] {available}, 4);
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105 return XPCOM.NS_OK;
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106 }
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107
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108 nsresult Read(byte* aBuf, PRUint32 aCount, PRUint32* _retval) {
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109 int max = Math.min (aCount, buffer is null ? 0 : buffer.length - index);
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110 if (aBuf is null)
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111 assert(0);
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112 if (max > 0) {
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113 //byte[] src = new byte[max];
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114 //System.arraycopy (buffer, index, src, 0, max);
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115 //XPCOM.memmove (aBuf, src, max);
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116 aBuf[0..max] = buffer[index..$];
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117 index += max;
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118 }
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119 *_retval = max;
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120 return XPCOM.NS_OK;
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121 }
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122
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123 nsresult ReadSegments (nsWriteSegmentFun aWriter, void* aClosure, PRUint32 aCount, PRUint32* _retval) {
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124 int max = Math.min (aCount, buffer is null ? 0 : buffer.length - index);
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125 PRUint32 cnt = max;
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126 while (cnt > 0) {
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127 PRUint32 aWriteCount;
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128 nsresult rc = aWriter (cast(nsIInputStream)this, aClosure, buffer.ptr, index, cnt, &aWriteCount);
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129 if (rc !is XPCOM.NS_OK) break;
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130 index += aWriteCount;
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131 cnt -= aWriteCount;
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132 }
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133 //XPCOM.memmove (_retval, new int[] {max - cnt}, 4);
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134 *_retval = (max - cnt);
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135 return XPCOM.NS_OK;
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136 }
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137
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138 nsresult IsNonBlocking (PRBool* _retval) {
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139 /* blocking */
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140 *_retval = 0;
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141 return XPCOM.NS_OK;
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142 }
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143 }