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annotate dwt/browser/InputStream.d @ 156:969e7de37c3d default tip

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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
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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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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
5
1a8b3cb347e0 Fix Ctors to 'this'
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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 }
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36
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37 extern(System)
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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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43 extern(System)
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44 nsresult QueryInterface (nsID* riid, void** ppvObject) {
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45 if (riid is null || ppvObject is null) return XPCOM.NS_ERROR_NO_INTERFACE;
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46 //nsID guid = new nsID ();
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47 //XPCOM.memmove (guid, riid, nsID.sizeof);
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48
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49 if (*riid == nsISupports.IID) {
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50 *ppvObject = cast(void*)cast(nsISupports)this;
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51 AddRef ();
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52 return XPCOM.NS_OK;
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53 }
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54 if (*riid == nsIInputStream.IID) {
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55 *ppvObject = cast(void*)cast(nsIInputStream)this;
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56 AddRef ();
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57 return XPCOM.NS_OK;
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58 }
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59 *ppvObject = null;
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60 return XPCOM.NS_ERROR_NO_INTERFACE;
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61 }
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63 extern(System)
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64 nsrefcnt Release () {
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65 refCount--;
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66 //if (refCount is 0) disposeCOMInterfaces ();
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67 return refCount;
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68 }
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69
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70 /* nsIInputStream implementation */
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71
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72 extern(System)
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73 nsresult Close () {
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74 buffer = null;
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75 index = 0;
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76 return XPCOM.NS_OK;
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77 }
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79 extern(System)
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80 nsresult Available (PRUint32* _retval) {
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81 PRUint32 available = buffer is null ? 0 : buffer.length - index;
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82 *_retval = available;
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83 //XPCOM.memmove (_retval, new int[] {available}, 4);
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84 return XPCOM.NS_OK;
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85 }
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87 extern(System)
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88 nsresult Read(byte* aBuf, PRUint32 aCount, PRUint32* _retval) {
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89 int max = Math.min (aCount, buffer is null ? 0 : buffer.length - index);
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90 if (aBuf is null)
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91 assert(0);
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92 if (max > 0) {
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93 //byte[] src = new byte[max];
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94 //System.arraycopy (buffer, index, src, 0, max);
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95 //XPCOM.memmove (aBuf, src, max);
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96 aBuf[0..max] = buffer[index..$];
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97 index += max;
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98 }
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99 *_retval = max;
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100 return XPCOM.NS_OK;
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101 }
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102
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103 extern(System)
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104 nsresult ReadSegments (nsWriteSegmentFun aWriter, void* aClosure, PRUint32 aCount, PRUint32* _retval) {
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105 int max = Math.min (aCount, buffer is null ? 0 : buffer.length - index);
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106 PRUint32 cnt = max;
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107 while (cnt > 0) {
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108 PRUint32 aWriteCount;
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109 nsresult rc = aWriter (cast(nsIInputStream)this, aClosure, buffer.ptr, index, cnt, &aWriteCount);
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110 if (rc !is XPCOM.NS_OK) break;
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111 index += aWriteCount;
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112 cnt -= aWriteCount;
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113 }
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114 //XPCOM.memmove (_retval, new int[] {max - cnt}, 4);
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115 *_retval = (max - cnt);
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116 return XPCOM.NS_OK;
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117 }
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118
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119 extern(System)
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120 nsresult IsNonBlocking (PRBool* _retval) {
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121 /* blocking */
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122 *_retval = 0;
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123 return XPCOM.NS_OK;
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124 }
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125 }