1 | /* |
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2 | Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 | |
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4 | |
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5 | The MySQL Connector/J is licensed under the terms of the GPLv2 |
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6 | <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors. |
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7 | There are special exceptions to the terms and conditions of the GPLv2 as it is applied to |
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8 | this software, see the FLOSS License Exception |
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9 | <http://www.mysql.com/about/legal/licensing/foss-exception.html>. |
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10 | |
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11 | This program is free software; you can redistribute it and/or modify it under the terms |
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12 | of the GNU General Public License as published by the Free Software Foundation; version 2 |
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13 | of the License. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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16 | without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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17 | See the GNU General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU General Public License along with this |
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20 | program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth |
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21 | Floor, Boston, MA 02110-1301 USA |
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22 | |
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23 | |
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24 | |
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25 | */ |
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26 | package com.mysql.jdbc; |
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27 | |
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28 | import java.io.UnsupportedEncodingException; |
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29 | import java.nio.ByteBuffer; |
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30 | import java.sql.SQLException; |
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31 | |
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32 | /** |
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33 | * Buffer contains code to read and write packets from/to the MySQL server. |
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34 | * |
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35 | * @version $Id$ |
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36 | * @author Mark Matthews |
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37 | */ |
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38 | public class Buffer { |
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39 | static final int MAX_BYTES_TO_DUMP = 512; |
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40 | |
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41 | static final int NO_LENGTH_LIMIT = -1; |
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42 | |
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43 | static final long NULL_LENGTH = -1; |
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44 | |
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45 | private int bufLength = 0; |
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46 | |
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47 | private byte[] byteBuffer; |
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48 | |
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49 | private int position = 0; |
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50 | |
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51 | protected boolean wasMultiPacket = false; |
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52 | |
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53 | public Buffer(byte[] buf) { |
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54 | this.byteBuffer = buf; |
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55 | setBufLength(buf.length); |
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56 | } |
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57 | |
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58 | Buffer(int size) { |
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59 | this.byteBuffer = new byte[size]; |
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60 | setBufLength(this.byteBuffer.length); |
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61 | this.position = MysqlIO.HEADER_LENGTH; |
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62 | } |
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63 | |
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64 | final void clear() { |
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65 | this.position = MysqlIO.HEADER_LENGTH; |
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66 | } |
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67 | |
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68 | final void dump() { |
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69 | dump(getBufLength()); |
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70 | } |
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71 | |
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72 | final String dump(int numBytes) { |
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73 | return StringUtils.dumpAsHex(getBytes(0, |
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74 | numBytes > getBufLength() ? getBufLength() : numBytes), |
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75 | numBytes > getBufLength() ? getBufLength() : numBytes); |
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76 | } |
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77 | |
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78 | final String dumpClampedBytes(int numBytes) { |
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79 | int numBytesToDump = numBytes < MAX_BYTES_TO_DUMP ? numBytes |
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80 | : MAX_BYTES_TO_DUMP; |
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81 | |
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82 | String dumped = StringUtils.dumpAsHex(getBytes(0, |
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83 | numBytesToDump > getBufLength() ? getBufLength() |
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84 | : numBytesToDump), |
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85 | numBytesToDump > getBufLength() ? getBufLength() |
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86 | : numBytesToDump); |
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87 | |
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88 | if (numBytesToDump < numBytes) { |
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89 | return dumped + " ....(packet exceeds max. dump length)"; |
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90 | } |
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91 | |
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92 | return dumped; |
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93 | } |
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94 | |
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95 | final void dumpHeader() { |
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96 | for (int i = 0; i < MysqlIO.HEADER_LENGTH; i++) { |
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97 | String hexVal = Integer.toHexString(readByte(i) & 0xff); |
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98 | |
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99 | if (hexVal.length() == 1) { |
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100 | hexVal = "0" + hexVal; //$NON-NLS-1$ |
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101 | } |
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102 | |
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103 | System.out.print(hexVal + " "); //$NON-NLS-1$ |
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104 | } |
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105 | } |
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106 | |
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107 | final void dumpNBytes(int start, int nBytes) { |
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108 | StringBuffer asciiBuf = new StringBuffer(); |
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109 | |
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110 | for (int i = start; (i < (start + nBytes)) && (i < getBufLength()); i++) { |
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111 | String hexVal = Integer.toHexString(readByte(i) & 0xff); |
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112 | |
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113 | if (hexVal.length() == 1) { |
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114 | hexVal = "0" + hexVal; //$NON-NLS-1$ |
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115 | } |
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116 | |
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117 | System.out.print(hexVal + " "); //$NON-NLS-1$ |
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118 | |
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119 | if ((readByte(i) > 32) && (readByte(i) < 127)) { |
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120 | asciiBuf.append((char) readByte(i)); |
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121 | } else { |
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122 | asciiBuf.append("."); //$NON-NLS-1$ |
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123 | } |
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124 | |
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125 | asciiBuf.append(" "); //$NON-NLS-1$ |
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126 | } |
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127 | |
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128 | System.out.println(" " + asciiBuf.toString()); //$NON-NLS-1$ |
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129 | } |
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130 | |
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131 | final void ensureCapacity(int additionalData) throws SQLException { |
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132 | if ((this.position + additionalData) > getBufLength()) { |
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133 | if ((this.position + additionalData) < this.byteBuffer.length) { |
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134 | // byteBuffer.length is != getBufLength() all of the time |
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135 | // due to re-using of packets (we don't shrink them) |
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136 | // |
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137 | // If we can, don't re-alloc, just set buffer length |
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138 | // to size of current buffer |
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139 | setBufLength(this.byteBuffer.length); |
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140 | } else { |
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141 | // |
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142 | // Otherwise, re-size, and pad so we can avoid |
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143 | // allocing again in the near future |
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144 | // |
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145 | int newLength = (int) (this.byteBuffer.length * 1.25); |
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146 | |
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147 | if (newLength < (this.byteBuffer.length + additionalData)) { |
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148 | newLength = this.byteBuffer.length |
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149 | + (int) (additionalData * 1.25); |
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150 | } |
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151 | |
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152 | if (newLength < this.byteBuffer.length) { |
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153 | newLength = this.byteBuffer.length + additionalData; |
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154 | } |
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155 | |
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156 | byte[] newBytes = new byte[newLength]; |
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157 | |
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158 | System.arraycopy(this.byteBuffer, 0, newBytes, 0, |
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159 | this.byteBuffer.length); |
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160 | this.byteBuffer = newBytes; |
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161 | setBufLength(this.byteBuffer.length); |
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162 | } |
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163 | } |
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164 | } |
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165 | |
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166 | /** |
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167 | * Skip over a length-encoded string |
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168 | * |
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169 | * @return The position past the end of the string |
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170 | */ |
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171 | public int fastSkipLenString() { |
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172 | long len = this.readFieldLength(); |
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173 | |
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174 | this.position += len; |
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175 | |
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176 | return (int) len; |
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177 | } |
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178 | |
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179 | public void fastSkipLenByteArray() { |
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180 | long len = this.readFieldLength(); |
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181 | |
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182 | if (len == NULL_LENGTH || len == 0) { |
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183 | return; |
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184 | } |
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185 | |
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186 | this.position += len; |
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187 | } |
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188 | |
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189 | protected final byte[] getBufferSource() { |
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190 | return this.byteBuffer; |
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191 | } |
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192 | |
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193 | public int getBufLength() { |
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194 | return this.bufLength; |
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195 | } |
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196 | |
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197 | /** |
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198 | * Returns the array of bytes this Buffer is using to read from. |
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199 | * |
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200 | * @return byte array being read from |
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201 | */ |
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202 | public byte[] getByteBuffer() { |
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203 | return this.byteBuffer; |
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204 | } |
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205 | |
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206 | final byte[] getBytes(int len) { |
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207 | byte[] b = new byte[len]; |
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208 | System.arraycopy(this.byteBuffer, this.position, b, 0, len); |
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209 | this.position += len; // update cursor |
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210 | |
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211 | return b; |
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212 | } |
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213 | |
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214 | /* |
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215 | * (non-Javadoc) |
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216 | * |
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217 | * @see com.mysql.jdbc.Buffer#getBytes(int, int) |
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218 | */ |
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219 | byte[] getBytes(int offset, int len) { |
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220 | byte[] dest = new byte[len]; |
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221 | System.arraycopy(this.byteBuffer, offset, dest, 0, len); |
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222 | |
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223 | return dest; |
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224 | } |
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225 | |
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226 | int getCapacity() { |
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227 | return this.byteBuffer.length; |
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228 | } |
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229 | |
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230 | public ByteBuffer getNioBuffer() { |
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231 | throw new IllegalArgumentException(Messages |
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232 | .getString("ByteArrayBuffer.0")); //$NON-NLS-1$ |
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233 | } |
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234 | |
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235 | /** |
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236 | * Returns the current position to write to/ read from |
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237 | * |
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238 | * @return the current position to write to/ read from |
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239 | */ |
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240 | public int getPosition() { |
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241 | return this.position; |
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242 | } |
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243 | |
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244 | // 2000-06-05 Changed |
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245 | final boolean isLastDataPacket() { |
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246 | return ((getBufLength() < 9) && ((this.byteBuffer[0] & 0xff) == 254)); |
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247 | } |
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248 | |
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249 | final boolean isAuthMethodSwitchRequestPacket() { |
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250 | return ((this.byteBuffer[0] & 0xff) == 254); |
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251 | } |
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252 | |
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253 | final boolean isOKPacket() { |
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254 | return ((this.byteBuffer[0] & 0xff) == 0); |
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255 | } |
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256 | |
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257 | final boolean isRawPacket() { |
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258 | return ((this.byteBuffer[0] & 0xff) == 1); |
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259 | } |
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260 | |
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261 | final long newReadLength() { |
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262 | int sw = this.byteBuffer[this.position++] & 0xff; |
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263 | |
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264 | switch (sw) { |
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265 | case 251: |
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266 | return 0; |
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267 | |
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268 | case 252: |
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269 | return readInt(); |
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270 | |
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271 | case 253: |
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272 | return readLongInt(); |
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273 | |
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274 | case 254: // changed for 64 bit lengths |
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275 | return readLongLong(); |
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276 | |
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277 | default: |
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278 | return sw; |
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279 | } |
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280 | } |
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281 | |
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282 | final byte readByte() { |
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283 | return this.byteBuffer[this.position++]; |
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284 | } |
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285 | |
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286 | final byte readByte(int readAt) { |
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287 | return this.byteBuffer[readAt]; |
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288 | } |
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289 | |
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290 | final long readFieldLength() { |
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291 | int sw = this.byteBuffer[this.position++] & 0xff; |
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292 | |
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293 | switch (sw) { |
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294 | case 251: |
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295 | return NULL_LENGTH; |
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296 | |
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297 | case 252: |
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298 | return readInt(); |
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299 | |
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300 | case 253: |
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301 | return readLongInt(); |
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302 | |
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303 | case 254: |
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304 | return readLongLong(); |
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305 | |
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306 | default: |
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307 | return sw; |
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308 | } |
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309 | } |
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310 | |
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311 | // 2000-06-05 Changed |
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312 | final int readInt() { |
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313 | byte[] b = this.byteBuffer; // a little bit optimization |
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314 | |
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315 | return (b[this.position++] & 0xff) | ((b[this.position++] & 0xff) << 8); |
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316 | } |
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317 | |
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318 | final int readIntAsLong() { |
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319 | byte[] b = this.byteBuffer; |
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320 | |
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321 | return (b[this.position++] & 0xff) | ((b[this.position++] & 0xff) << 8) |
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322 | | ((b[this.position++] & 0xff) << 16) |
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323 | | ((b[this.position++] & 0xff) << 24); |
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324 | } |
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325 | |
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326 | final byte[] readLenByteArray(int offset) { |
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327 | long len = this.readFieldLength(); |
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328 | |
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329 | if (len == NULL_LENGTH) { |
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330 | return null; |
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331 | } |
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332 | |
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333 | if (len == 0) { |
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334 | return Constants.EMPTY_BYTE_ARRAY; |
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335 | } |
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336 | |
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337 | this.position += offset; |
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338 | |
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339 | return getBytes((int) len); |
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340 | } |
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341 | |
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342 | final long readLength() { |
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343 | int sw = this.byteBuffer[this.position++] & 0xff; |
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344 | |
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345 | switch (sw) { |
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346 | case 251: |
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347 | return 0; |
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348 | |
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349 | case 252: |
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350 | return readInt(); |
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351 | |
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352 | case 253: |
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353 | return readLongInt(); |
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354 | |
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355 | case 254: |
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356 | return readLong(); |
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357 | |
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358 | default: |
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359 | return sw; |
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360 | } |
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361 | } |
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362 | |
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363 | // 2000-06-05 Fixed |
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364 | final long readLong() { |
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365 | byte[] b = this.byteBuffer; |
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366 | |
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367 | return ((long) b[this.position++] & 0xff) |
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368 | | (((long) b[this.position++] & 0xff) << 8) |
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369 | | ((long) (b[this.position++] & 0xff) << 16) |
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370 | | ((long) (b[this.position++] & 0xff) << 24); |
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371 | } |
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372 | |
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373 | // 2000-06-05 Changed |
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374 | final int readLongInt() { |
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375 | byte[] b = this.byteBuffer; |
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376 | |
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377 | return (b[this.position++] & 0xff) | ((b[this.position++] & 0xff) << 8) |
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378 | | ((b[this.position++] & 0xff) << 16); |
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379 | } |
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380 | |
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381 | // 2000-06-05 Fixed |
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382 | final long readLongLong() { |
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383 | byte[] b = this.byteBuffer; |
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384 | |
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385 | return (b[this.position++] & 0xff) |
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386 | | ((long) (b[this.position++] & 0xff) << 8) |
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387 | | ((long) (b[this.position++] & 0xff) << 16) |
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388 | | ((long) (b[this.position++] & 0xff) << 24) |
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389 | | ((long) (b[this.position++] & 0xff) << 32) |
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390 | | ((long) (b[this.position++] & 0xff) << 40) |
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391 | | ((long) (b[this.position++] & 0xff) << 48) |
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392 | | ((long) (b[this.position++] & 0xff) << 56); |
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393 | } |
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394 | |
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395 | final int readnBytes() { |
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396 | int sw = this.byteBuffer[this.position++] & 0xff; |
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397 | |
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398 | switch (sw) { |
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399 | case 1: |
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400 | return this.byteBuffer[this.position++] & 0xff; |
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401 | |
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402 | case 2: |
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403 | return this.readInt(); |
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404 | |
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405 | case 3: |
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406 | return this.readLongInt(); |
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407 | |
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408 | case 4: |
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409 | return (int) this.readLong(); |
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410 | |
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411 | default: |
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412 | return 255; |
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413 | } |
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414 | } |
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415 | |
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416 | // |
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417 | // Read a null-terminated string |
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418 | // |
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419 | // To avoid alloc'ing a new byte array, we |
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420 | // do this by hand, rather than calling getNullTerminatedBytes() |
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421 | // |
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422 | public final String readString() { |
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423 | int i = this.position; |
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424 | int len = 0; |
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425 | int maxLen = getBufLength(); |
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426 | |
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427 | while ((i < maxLen) && (this.byteBuffer[i] != 0)) { |
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428 | len++; |
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429 | i++; |
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430 | } |
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431 | |
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432 | String s = StringUtils.toString(this.byteBuffer, this.position, len); |
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433 | this.position += (len + 1); // update cursor |
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434 | |
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435 | return s; |
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436 | } |
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437 | |
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438 | final String readString(String encoding, ExceptionInterceptor exceptionInterceptor) throws SQLException { |
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439 | int i = this.position; |
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440 | int len = 0; |
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441 | int maxLen = getBufLength(); |
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442 | |
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443 | while ((i < maxLen) && (this.byteBuffer[i] != 0)) { |
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444 | len++; |
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445 | i++; |
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446 | } |
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447 | |
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448 | try { |
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449 | return StringUtils.toString(this.byteBuffer, this.position, len, encoding); |
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450 | } catch (UnsupportedEncodingException uEE) { |
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451 | throw SQLError.createSQLException(Messages.getString("ByteArrayBuffer.1") //$NON-NLS-1$ |
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452 | + encoding + "'", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); //$NON-NLS-1$ |
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453 | } finally { |
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454 | this.position += (len + 1); // update cursor |
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455 | } |
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456 | } |
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457 | |
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458 | /** |
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459 | * Read a fixed length string |
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460 | */ |
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461 | final String readString(String encoding, ExceptionInterceptor exceptionInterceptor, int expectedLength) throws SQLException { |
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462 | int i = this.position; |
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463 | int len = 0; |
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464 | int maxLen = getBufLength(); |
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465 | |
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466 | while ((i < maxLen) && (len < expectedLength) && (this.byteBuffer[i] != 0)) { |
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467 | len++; |
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468 | i++; |
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469 | } |
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470 | |
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471 | if (len < expectedLength) { |
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472 | throw SQLError.createSQLException(Messages.getString("ByteArrayBuffer.2"), |
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473 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); |
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474 | } |
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475 | |
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476 | try { |
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477 | return StringUtils.toString(this.byteBuffer, this.position, len, encoding); |
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478 | } catch (UnsupportedEncodingException uEE) { |
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479 | throw SQLError.createSQLException(Messages.getString("ByteArrayBuffer.1") //$NON-NLS-1$ |
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480 | + encoding + "'", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); //$NON-NLS-1$ |
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481 | } finally { |
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482 | this.position += len; // update cursor |
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483 | } |
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484 | } |
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485 | |
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486 | public void setBufLength(int bufLengthToSet) { |
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487 | this.bufLength = bufLengthToSet; |
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488 | } |
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489 | |
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490 | /** |
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491 | * Sets the array of bytes to use as a buffer to read from. |
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492 | * |
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493 | * @param byteBuffer |
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494 | * the array of bytes to use as a buffer |
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495 | */ |
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496 | public void setByteBuffer(byte[] byteBufferToSet) { |
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497 | this.byteBuffer = byteBufferToSet; |
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498 | } |
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499 | |
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500 | /** |
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501 | * Set the current position to write to/ read from |
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502 | * |
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503 | * @param position |
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504 | * the position (0-based index) |
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505 | */ |
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506 | public void setPosition(int positionToSet) { |
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507 | this.position = positionToSet; |
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508 | } |
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509 | |
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510 | /** |
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511 | * Sets whether this packet was part of a multipacket |
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512 | * |
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513 | * @param flag |
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514 | * was this packet part of a multipacket? |
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515 | */ |
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516 | public void setWasMultiPacket(boolean flag) { |
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517 | this.wasMultiPacket = flag; |
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518 | } |
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519 | |
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520 | public String toString() { |
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521 | return dumpClampedBytes(getPosition()); |
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522 | } |
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523 | |
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524 | public String toSuperString() { |
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525 | return super.toString(); |
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526 | } |
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527 | |
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528 | /** |
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529 | * Was this packet part of a multipacket? |
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530 | * |
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531 | * @return was this packet part of a multipacket? |
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532 | */ |
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533 | public boolean wasMultiPacket() { |
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534 | return this.wasMultiPacket; |
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535 | } |
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536 | |
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537 | public final void writeByte(byte b) throws SQLException { |
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538 | ensureCapacity(1); |
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539 | |
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540 | this.byteBuffer[this.position++] = b; |
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541 | } |
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542 | |
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543 | // Write a byte array |
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544 | public final void writeBytesNoNull(byte[] bytes) throws SQLException { |
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545 | int len = bytes.length; |
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546 | ensureCapacity(len); |
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547 | System.arraycopy(bytes, 0, this.byteBuffer, this.position, len); |
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548 | this.position += len; |
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549 | } |
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550 | |
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551 | // Write a byte array with the given offset and length |
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552 | final void writeBytesNoNull(byte[] bytes, int offset, int length) |
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553 | throws SQLException { |
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554 | ensureCapacity(length); |
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555 | System.arraycopy(bytes, offset, this.byteBuffer, this.position, length); |
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556 | this.position += length; |
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557 | } |
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558 | |
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559 | final void writeDouble(double d) throws SQLException { |
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560 | long l = Double.doubleToLongBits(d); |
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561 | writeLongLong(l); |
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562 | } |
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563 | |
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564 | final void writeFieldLength(long length) throws SQLException { |
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565 | if (length < 251) { |
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566 | writeByte((byte) length); |
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567 | } else if (length < 65536L) { |
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568 | ensureCapacity(3); |
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569 | writeByte((byte) 252); |
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570 | writeInt((int) length); |
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571 | } else if (length < 16777216L) { |
---|
572 | ensureCapacity(4); |
---|
573 | writeByte((byte) 253); |
---|
574 | writeLongInt((int) length); |
---|
575 | } else { |
---|
576 | ensureCapacity(9); |
---|
577 | writeByte((byte) 254); |
---|
578 | writeLongLong(length); |
---|
579 | } |
---|
580 | } |
---|
581 | |
---|
582 | final void writeFloat(float f) throws SQLException { |
---|
583 | ensureCapacity(4); |
---|
584 | |
---|
585 | int i = Float.floatToIntBits(f); |
---|
586 | byte[] b = this.byteBuffer; |
---|
587 | b[this.position++] = (byte) (i & 0xff); |
---|
588 | b[this.position++] = (byte) (i >>> 8); |
---|
589 | b[this.position++] = (byte) (i >>> 16); |
---|
590 | b[this.position++] = (byte) (i >>> 24); |
---|
591 | } |
---|
592 | |
---|
593 | // 2000-06-05 Changed |
---|
594 | final void writeInt(int i) throws SQLException { |
---|
595 | ensureCapacity(2); |
---|
596 | |
---|
597 | byte[] b = this.byteBuffer; |
---|
598 | b[this.position++] = (byte) (i & 0xff); |
---|
599 | b[this.position++] = (byte) (i >>> 8); |
---|
600 | } |
---|
601 | |
---|
602 | // Write a String using the specified character |
---|
603 | // encoding |
---|
604 | final void writeLenBytes(byte[] b) throws SQLException { |
---|
605 | int len = b.length; |
---|
606 | ensureCapacity(len + 9); |
---|
607 | writeFieldLength(len); |
---|
608 | System.arraycopy(b, 0, this.byteBuffer, this.position, len); |
---|
609 | this.position += len; |
---|
610 | } |
---|
611 | |
---|
612 | // Write a String using the specified character |
---|
613 | // encoding |
---|
614 | final void writeLenString(String s, String encoding, String serverEncoding, |
---|
615 | SingleByteCharsetConverter converter, boolean parserKnowsUnicode, |
---|
616 | MySQLConnection conn) |
---|
617 | throws UnsupportedEncodingException, SQLException { |
---|
618 | byte[] b = null; |
---|
619 | |
---|
620 | if (converter != null) { |
---|
621 | b = converter.toBytes(s); |
---|
622 | } else { |
---|
623 | b = StringUtils.getBytes(s, encoding, serverEncoding, |
---|
624 | parserKnowsUnicode, conn, conn.getExceptionInterceptor()); |
---|
625 | } |
---|
626 | |
---|
627 | int len = b.length; |
---|
628 | ensureCapacity(len + 9); |
---|
629 | writeFieldLength(len); |
---|
630 | System.arraycopy(b, 0, this.byteBuffer, this.position, len); |
---|
631 | this.position += len; |
---|
632 | } |
---|
633 | |
---|
634 | // 2000-06-05 Changed |
---|
635 | final void writeLong(long i) throws SQLException { |
---|
636 | ensureCapacity(4); |
---|
637 | |
---|
638 | byte[] b = this.byteBuffer; |
---|
639 | b[this.position++] = (byte) (i & 0xff); |
---|
640 | b[this.position++] = (byte) (i >>> 8); |
---|
641 | b[this.position++] = (byte) (i >>> 16); |
---|
642 | b[this.position++] = (byte) (i >>> 24); |
---|
643 | } |
---|
644 | |
---|
645 | // 2000-06-05 Changed |
---|
646 | final void writeLongInt(int i) throws SQLException { |
---|
647 | ensureCapacity(3); |
---|
648 | byte[] b = this.byteBuffer; |
---|
649 | b[this.position++] = (byte) (i & 0xff); |
---|
650 | b[this.position++] = (byte) (i >>> 8); |
---|
651 | b[this.position++] = (byte) (i >>> 16); |
---|
652 | } |
---|
653 | |
---|
654 | final void writeLongLong(long i) throws SQLException { |
---|
655 | ensureCapacity(8); |
---|
656 | byte[] b = this.byteBuffer; |
---|
657 | b[this.position++] = (byte) (i & 0xff); |
---|
658 | b[this.position++] = (byte) (i >>> 8); |
---|
659 | b[this.position++] = (byte) (i >>> 16); |
---|
660 | b[this.position++] = (byte) (i >>> 24); |
---|
661 | b[this.position++] = (byte) (i >>> 32); |
---|
662 | b[this.position++] = (byte) (i >>> 40); |
---|
663 | b[this.position++] = (byte) (i >>> 48); |
---|
664 | b[this.position++] = (byte) (i >>> 56); |
---|
665 | } |
---|
666 | |
---|
667 | // Write null-terminated string |
---|
668 | final void writeString(String s) throws SQLException { |
---|
669 | ensureCapacity((s.length() * 2) + 1); |
---|
670 | writeStringNoNull(s); |
---|
671 | this.byteBuffer[this.position++] = 0; |
---|
672 | } |
---|
673 | |
---|
674 | // Write null-terminated string in the given encoding |
---|
675 | final void writeString(String s, String encoding, MySQLConnection conn) throws SQLException { |
---|
676 | ensureCapacity((s.length() * 2) + 1); |
---|
677 | try { |
---|
678 | writeStringNoNull(s, encoding, encoding, false, conn); |
---|
679 | } catch (UnsupportedEncodingException ue) { |
---|
680 | throw new SQLException(ue.toString(), SQLError.SQL_STATE_GENERAL_ERROR); |
---|
681 | } |
---|
682 | |
---|
683 | this.byteBuffer[this.position++] = 0; |
---|
684 | } |
---|
685 | |
---|
686 | // Write string, with no termination |
---|
687 | final void writeStringNoNull(String s) throws SQLException { |
---|
688 | int len = s.length(); |
---|
689 | ensureCapacity(len * 2); |
---|
690 | System.arraycopy(StringUtils.getBytes(s), 0, this.byteBuffer, this.position, len); |
---|
691 | this.position += len; |
---|
692 | |
---|
693 | // for (int i = 0; i < len; i++) |
---|
694 | // { |
---|
695 | // this.byteBuffer[this.position++] = (byte)s.charAt(i); |
---|
696 | // } |
---|
697 | } |
---|
698 | |
---|
699 | // Write a String using the specified character |
---|
700 | // encoding |
---|
701 | final void writeStringNoNull(String s, String encoding, |
---|
702 | String serverEncoding, boolean parserKnowsUnicode, MySQLConnection conn) |
---|
703 | throws UnsupportedEncodingException, SQLException { |
---|
704 | byte[] b = StringUtils.getBytes(s, encoding, serverEncoding, |
---|
705 | parserKnowsUnicode, conn, conn.getExceptionInterceptor()); |
---|
706 | |
---|
707 | int len = b.length; |
---|
708 | ensureCapacity(len); |
---|
709 | System.arraycopy(b, 0, this.byteBuffer, this.position, len); |
---|
710 | this.position += len; |
---|
711 | } |
---|
712 | } |
---|