corrade-vassal – Blame information for rev 1
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1 | vero | 1 | /* |
2 | * CVS Identifier: |
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3 | * |
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4 | * $Id: BEBufferedRandomAccessFile.java,v 1.18 2001/07/17 13:13:35 grosbois Exp $ |
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5 | * |
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6 | * Interface: RandomAccessIO.java |
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7 | * |
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8 | * Description: Class for random access I/O (big-endian ordering). |
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9 | * |
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10 | * |
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11 | * |
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12 | * COPYRIGHT: |
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13 | * |
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14 | * This software module was originally developed by Raphaël Grosbois and |
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15 | * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel |
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16 | * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David |
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17 | * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research |
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18 | * Centre France S.A) in the course of development of the JPEG2000 |
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19 | * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This |
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20 | * software module is an implementation of a part of the JPEG 2000 |
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21 | * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio |
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22 | * Systems AB and Canon Research Centre France S.A (collectively JJ2000 |
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23 | * Partners) agree not to assert against ISO/IEC and users of the JPEG |
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24 | * 2000 Standard (Users) any of their rights under the copyright, not |
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25 | * including other intellectual property rights, for this software module |
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26 | * with respect to the usage by ISO/IEC and Users of this software module |
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27 | * or modifications thereof for use in hardware or software products |
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28 | * claiming conformance to the JPEG 2000 Standard. Those intending to use |
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29 | * this software module in hardware or software products are advised that |
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30 | * their use may infringe existing patents. The original developers of |
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31 | * this software module, JJ2000 Partners and ISO/IEC assume no liability |
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32 | * for use of this software module or modifications thereof. No license |
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33 | * or right to this software module is granted for non JPEG 2000 Standard |
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34 | * conforming products. JJ2000 Partners have full right to use this |
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35 | * software module for his/her own purpose, assign or donate this |
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36 | * software module to any third party and to inhibit third parties from |
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37 | * using this software module for non JPEG 2000 Standard conforming |
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38 | * products. This copyright notice must be included in all copies or |
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39 | * derivative works of this software module. |
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40 | * |
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41 | * Copyright (c) 1999/2000 JJ2000 Partners. |
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42 | * */ |
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43 | using System; |
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44 | namespace CSJ2K.j2k.io |
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45 | { |
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46 | |||
47 | /// <summary> This class defines a Buffered Random Access File, where all I/O is |
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48 | /// considered to be big-endian. It extends the |
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49 | /// <tt>BufferedRandomAccessFile</tt> class. |
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50 | /// |
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51 | /// </summary> |
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52 | /// <seealso cref="RandomAccessIO"> |
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53 | /// </seealso> |
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54 | /// <seealso cref="BinaryDataOutput"> |
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55 | /// </seealso> |
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56 | /// <seealso cref="BinaryDataInput"> |
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57 | /// </seealso> |
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58 | /// <seealso cref="BufferedRandomAccessFile"> |
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59 | /// |
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60 | /// </seealso> |
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61 | public class BEBufferedRandomAccessFile:BufferedRandomAccessFile, RandomAccessIO, EndianType |
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62 | { |
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63 | |||
64 | /// <summary> Constructor. Always needs a size for the buffer. |
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65 | /// |
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66 | /// </summary> |
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67 | /// <param name="file">The file associated with the buffer |
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68 | /// |
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69 | /// </param> |
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70 | /// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+" |
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71 | /// opens the file for update whereas "rw" removes it |
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72 | /// before. So the 2 modes are different only if the file |
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73 | /// already exists). |
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74 | /// |
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75 | /// </param> |
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76 | /// <param name="bufferSize">The number of bytes to buffer |
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77 | /// |
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78 | /// </param> |
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79 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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80 | /// |
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81 | /// </exception> |
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82 | public BEBufferedRandomAccessFile(System.IO.FileInfo file, System.String mode, int bufferSize):base(file, mode, bufferSize) |
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83 | { |
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84 | byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN; |
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85 | } |
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86 | |||
87 | /// <summary> Constructor. Uses the default value for the byte-buffer size (512 |
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88 | /// bytes). |
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89 | /// |
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90 | /// </summary> |
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91 | /// <param name="file">The file associated with the buffer |
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92 | /// |
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93 | /// </param> |
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94 | /// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+" |
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95 | /// opens the file for update whereas "rw" removes it |
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96 | /// before. So the 2 modes are different only if the file |
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97 | /// already exists). |
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98 | /// |
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99 | /// </param> |
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100 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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101 | /// |
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102 | /// </exception> |
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103 | public BEBufferedRandomAccessFile(System.IO.FileInfo file, System.String mode):base(file, mode) |
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104 | { |
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105 | byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN; |
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106 | } |
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107 | |||
108 | /// <summary> Constructor. Always needs a size for the buffer. |
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109 | /// |
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110 | /// </summary> |
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111 | /// <param name="name">The name of the file associated with the buffer |
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112 | /// |
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113 | /// </param> |
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114 | /// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+" |
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115 | /// opens the file for update whereas "rw" removes it |
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116 | /// before. So the 2 modes are different only if the file |
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117 | /// already exists). |
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118 | /// |
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119 | /// </param> |
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120 | /// <param name="bufferSize">The number of bytes to buffer |
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121 | /// |
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122 | /// </param> |
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123 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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124 | /// |
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125 | /// </exception> |
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126 | public BEBufferedRandomAccessFile(System.String name, System.String mode, int bufferSize):base(name, mode, bufferSize) |
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127 | { |
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128 | byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN; |
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129 | } |
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130 | |||
131 | /// <summary> Constructor. Uses the default value for the byte-buffer size (512 |
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132 | /// bytes). |
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133 | /// |
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134 | /// </summary> |
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135 | /// <param name="name">The name of the file associated with the buffer |
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136 | /// |
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137 | /// </param> |
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138 | /// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+" |
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139 | /// opens the file for update whereas "rw" removes it |
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140 | /// before. So the 2 modes are different only if the file |
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141 | /// already exists). |
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142 | /// |
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143 | /// </param> |
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144 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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145 | /// |
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146 | /// </exception> |
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147 | public BEBufferedRandomAccessFile(System.String name, System.String mode):base(name, mode) |
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148 | { |
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149 | byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN; |
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150 | } |
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151 | |||
152 | /// <summary> Writes the short value of <tt>v</tt> (i.e., 16 least significant bits) |
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153 | /// to the output. Prior to writing, the output should be realigned at the |
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154 | /// byte level. |
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155 | /// |
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156 | /// <p>Signed or unsigned data can be written. To write a signed value just |
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157 | /// pass the <tt>short</tt> value as an argument. To write unsigned data |
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158 | /// pass the <tt>int</tt> value as an argument (it will be automatically |
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159 | /// casted, and only the 16 least significant bits will be written).</p> |
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160 | /// |
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161 | /// </summary> |
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162 | /// <param name="v">The value to write to the output |
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163 | /// |
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164 | /// </param> |
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165 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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166 | /// |
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167 | /// </exception> |
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168 | public override void writeShort(int v) |
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169 | { |
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170 | write(SupportClass.URShift(v, 8)); |
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171 | write(v); |
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172 | } |
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173 | |||
174 | /// <summary> Writes the int value of <tt>v</tt> (i.e., the 32 bits) to the |
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175 | /// output. Prior to writing, the output should be realigned at the byte |
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176 | /// level. |
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177 | /// |
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178 | /// </summary> |
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179 | /// <param name="v">The value to write to the output |
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180 | /// |
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181 | /// </param> |
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182 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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183 | /// |
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184 | /// </exception> |
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185 | public override void writeInt(int v) |
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186 | { |
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187 | write(SupportClass.URShift(v, 24)); |
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188 | write(SupportClass.URShift(v, 16)); |
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189 | write(SupportClass.URShift(v, 8)); |
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190 | write(v); |
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191 | } |
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192 | |||
193 | /// <summary> Writes the long value of <tt>v</tt> (i.e., the 64 bits) to the |
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194 | /// output. Prior to writing, the output should be realigned at the byte |
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195 | /// level. |
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196 | /// |
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197 | /// </summary> |
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198 | /// <param name="v">The value to write to the output |
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199 | /// |
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200 | /// </param> |
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201 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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202 | /// |
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203 | /// </exception> |
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204 | public override void writeLong(long v) |
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205 | { |
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206 | write((int) (SupportClass.URShift(v, 56))); |
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207 | write((int) (SupportClass.URShift(v, 48))); |
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208 | write((int) (SupportClass.URShift(v, 40))); |
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209 | write((int) (SupportClass.URShift(v, 32))); |
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210 | write((int) (SupportClass.URShift(v, 24))); |
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211 | write((int) (SupportClass.URShift(v, 16))); |
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212 | write((int) (SupportClass.URShift(v, 8))); |
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213 | write((int) v); |
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214 | } |
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215 | |||
216 | /// <summary> Writes the IEEE float value <tt>v</tt> (i.e., 32 bits) to the |
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217 | /// output. Prior to writing, the output should be realigned at the byte |
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218 | /// level. |
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219 | /// |
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220 | /// </summary> |
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221 | /// <param name="v">The value to write to the output |
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222 | /// |
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223 | /// </param> |
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224 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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225 | /// |
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226 | /// </exception> |
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227 | public override void writeFloat(float v) |
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228 | { |
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229 | // CONVERSION PROBLEM? OPTIMIZE!!! |
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230 | //byte[] floatbytes = BitConverter.GetBytes(v); |
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231 | //for (int i = floatbytes.Length-1; i >= 0 ; i--) write(floatbytes[i]); |
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232 | |||
233 | //UPGRADE_ISSUE: Method 'java.lang.Float.floatToIntBits' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangFloatfloatToIntBits_float'" |
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234 | //int intV = Float.floatToIntBits(v); |
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235 | int intV = BitConverter.ToInt32(BitConverter.GetBytes(v), 0); |
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236 | write(SupportClass.URShift(intV, 24)); |
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237 | write(SupportClass.URShift(intV, 16)); |
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238 | write(SupportClass.URShift(intV, 8)); |
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239 | write(intV); |
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240 | } |
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241 | |||
242 | /// <summary> Writes the IEEE double value <tt>v</tt> (i.e., 64 bits) to the |
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243 | /// output. Prior to writing, the output should be realigned at the byte |
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244 | /// level. |
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245 | /// |
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246 | /// </summary> |
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247 | /// <param name="v">The value to write to the output |
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248 | /// |
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249 | /// </param> |
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250 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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251 | /// |
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252 | /// </exception> |
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253 | public override void writeDouble(double v) |
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254 | { |
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255 | //byte[] doublebytes = BitConverter.GetBytes(v); |
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256 | //for (int i = doublebytes.Length-1; i >= 0 ; i--) write(doublebytes[i]); |
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257 | |||
258 | //UPGRADE_ISSUE: Method 'java.lang.Double.doubleToLongBits' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangDoubledoubleToLongBits_double'" |
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259 | //long longV = Double.doubleToLongBits(v); |
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260 | long longV = BitConverter.ToInt64(BitConverter.GetBytes(v), 0); |
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261 | write((int) (SupportClass.URShift(longV, 56))); |
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262 | write((int) (SupportClass.URShift(longV, 48))); |
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263 | write((int) (SupportClass.URShift(longV, 40))); |
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264 | write((int) (SupportClass.URShift(longV, 32))); |
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265 | write((int) (SupportClass.URShift(longV, 24))); |
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266 | write((int) (SupportClass.URShift(longV, 16))); |
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267 | write((int) (SupportClass.URShift(longV, 8))); |
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268 | write((int) (longV)); |
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269 | |||
270 | } |
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271 | |||
272 | /// <summary> Reads a signed short (i.e. 16 bit) from the input. Prior to reading, |
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273 | /// the input should be realigned at the byte level. |
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274 | /// |
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275 | /// </summary> |
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276 | /// <returns> The next byte-aligned signed short (16 bit) from the input. |
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277 | /// |
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278 | /// </returns> |
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279 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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280 | /// getting all the necessary data. |
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281 | /// |
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282 | /// </exception> |
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283 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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284 | /// |
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285 | /// </exception> |
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286 | public override short readShort() |
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287 | { |
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288 | return (short) ((read() << 8) | (read())); |
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289 | } |
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290 | |||
291 | /// <summary> Reads an unsigned short (i.e., 16 bit) from the input. It is returned |
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292 | /// as an <tt>int</tt> since Java does not have an unsigned short |
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293 | /// type. Prior to reading, the input should be realigned at the byte |
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294 | /// level. |
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295 | /// |
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296 | /// </summary> |
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297 | /// <returns> The next byte-aligned unsigned short (16 bit) from the input, |
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298 | /// as an <tt>int</tt>. |
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299 | /// |
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300 | /// </returns> |
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301 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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302 | /// getting all the necessary data. |
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303 | /// |
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304 | /// </exception> |
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305 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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306 | /// |
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307 | /// </exception> |
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308 | public override int readUnsignedShort() |
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309 | { |
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310 | return ((read() << 8) | read()); |
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311 | } |
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312 | |||
313 | /// <summary> Reads a signed int (i.e., 32 bit) from the input. Prior to reading, the |
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314 | /// input should be realigned at the byte level. |
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315 | /// |
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316 | /// </summary> |
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317 | /// <returns> The next byte-aligned signed int (32 bit) from the input. |
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318 | /// |
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319 | /// </returns> |
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320 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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321 | /// getting all the necessary data. |
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322 | /// |
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323 | /// </exception> |
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324 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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325 | /// |
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326 | /// </exception> |
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327 | public override int readInt() |
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328 | { |
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329 | return ((read() << 24) | (read() << 16) | (read() << 8) | read()); |
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330 | } |
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331 | |||
332 | /// <summary> Reads an unsigned int (i.e., 32 bit) from the input. It is returned as |
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333 | /// a <tt>long</tt> since Java does not have an unsigned short type. Prior |
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334 | /// to reading, the input should be realigned at the byte level. |
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335 | /// |
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336 | /// </summary> |
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337 | /// <returns> The next byte-aligned unsigned int (32 bit) from the input, as |
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338 | /// a <tt>long</tt>. |
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339 | /// |
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340 | /// </returns> |
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341 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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342 | /// getting all the necessary data. |
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343 | /// |
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344 | /// </exception> |
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345 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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346 | /// |
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347 | /// </exception> |
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348 | public override long readUnsignedInt() |
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349 | { |
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350 | return (long) ((read() << 24) | (read() << 16) | (read() << 8) | read()); |
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351 | } |
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352 | |||
353 | /// <summary> Reads a signed long (i.e., 64 bit) from the input. Prior to reading, |
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354 | /// the input should be realigned at the byte level. |
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355 | /// |
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356 | /// </summary> |
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357 | /// <returns> The next byte-aligned signed long (64 bit) from the input. |
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358 | /// |
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359 | /// </returns> |
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360 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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361 | /// getting all the necessary data. |
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362 | /// |
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363 | /// </exception> |
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364 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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365 | /// |
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366 | /// </exception> |
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367 | public override long readLong() |
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368 | { |
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369 | //byte[] longbytes = new byte[8]; |
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370 | //for (int i = longbytes.Length-1; i >= 0; i--) longbytes[i] = read(); |
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371 | //return BitConverter.ToInt64(longbytes, 0); |
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372 | return ((long)(((ulong) read() << 56) | ((ulong) read() << 48) | ((ulong) read() << 40) | ((ulong) read() << 32) | ((ulong) read() << 24) | ((ulong) read() << 16) | ((ulong) read() << 8) | ((ulong) read()))); |
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373 | } |
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374 | |||
375 | /// <summary> Reads an IEEE single precision (i.e., 32 bit) floating-point number |
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376 | /// from the input. Prior to reading, the input should be realigned at the |
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377 | /// byte level. |
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378 | /// |
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379 | /// </summary> |
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380 | /// <returns> The next byte-aligned IEEE float (32 bit) from the input. |
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381 | /// |
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382 | /// </returns> |
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383 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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384 | /// getting all the necessary data. |
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385 | /// |
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386 | /// </exception> |
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387 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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388 | /// |
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389 | /// </exception> |
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390 | public override float readFloat() |
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391 | { |
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392 | // CONVERSION PROBLEM? OPTIMIZE!!! |
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393 | //byte[] floatbytes = new byte[4]; |
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394 | //for (int i = floatbytes.Length-1; i >= 0 ; i--) floatbytes[i] = (byte)read(); |
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395 | //return BitConverter.ToSingle(floatbytes, 0); |
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396 | |||
397 | //UPGRADE_ISSUE: Method 'java.lang.Float.intBitsToFloat' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangFloatintBitsToFloat_int'" |
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398 | //return Float.intBitsToFloat((read() << 24) | (read() << 16) | (read() << 8) | (read())); |
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399 | return BitConverter.ToSingle(BitConverter.GetBytes((read() << 24) | (read() << 16) | (read() << 8) | (read())), 0); |
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400 | |||
401 | } |
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402 | |||
403 | /// <summary> Reads an IEEE double precision (i.e., 64 bit) floating-point number |
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404 | /// from the input. Prior to reading, the input should be realigned at the |
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405 | /// byte level. |
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406 | /// |
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407 | /// </summary> |
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408 | /// <returns> The next byte-aligned IEEE double (64 bit) from the input. |
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409 | /// |
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410 | /// </returns> |
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411 | /// <exception cref="java.io.EOFException">If the end-of file was reached before |
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412 | /// getting all the necessary data. |
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413 | /// |
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414 | /// </exception> |
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415 | /// <exception cref="java.io.IOException">If an I/O error ocurred. |
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416 | /// |
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417 | /// </exception> |
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418 | public override double readDouble() |
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419 | { |
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420 | // CONVERSION PROBLEM? OPTIMIZE!!! |
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421 | //byte[] doublebytes = new byte[8]; |
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422 | //for (int i = doublebytes.Length-1; i >=0 ; i--) doublebytes[i] = (byte)read(); |
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423 | //return BitConverter.ToDouble(doublebytes, 0); |
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424 | |||
425 | //UPGRADE_ISSUE: Method 'java.lang.Double.longBitsToDouble' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangDoublelongBitsToDouble_long'" |
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426 | //return Double.longBitsToDouble(((long) read() << 56) | ((long) read() << 48) | ((long) read() << 40) | ((long) read() << 32) | ((long) read() << 24) | ((long) read() << 16) | ((long) read() << 8) | ((long) read())); |
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427 | |||
428 | return BitConverter.ToDouble(BitConverter.GetBytes(((long) read() << 56) | ((long) read() << 48) | ((long) read() << 40) | ((long) read() << 32) | ((long) read() << 24) | ((long) read() << 16) | ((long) read() << 8) | ((long) read())), 0); |
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429 | |||
430 | } |
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431 | |||
432 | /// <summary> Returns a string of information about the file and the endianess |
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433 | /// |
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434 | /// </summary> |
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435 | public override System.String ToString() |
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436 | { |
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437 | return base.ToString() + "\nBig-Endian ordering"; |
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438 | } |
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439 | } |
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440 | } |