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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the plugins of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 // Most of the code here was originally written by Serika Kurusugawa |
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43 // a.k.a. Junji Takagi, and is included in Qt with the author's permission, |
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44 // and the grateful thanks of the Qt team. |
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45 |
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46 /*! \class QSjisCodec |
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47 \reentrant |
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48 \internal |
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49 */ |
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50 |
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51 #include "qsjiscodec.h" |
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52 #include "qlist.h" |
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53 |
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54 QT_BEGIN_NAMESPACE |
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55 |
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56 #ifndef QT_NO_TEXTCODEC |
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57 enum { |
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58 Esc = 0x1b |
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59 }; |
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60 |
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61 #define IsKana(c) (((c) >= 0xa1) && ((c) <= 0xdf)) |
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62 #define IsSjisChar1(c) ((((c) >= 0x81) && ((c) <= 0x9f)) || \ |
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63 (((c) >= 0xe0) && ((c) <= 0xfc))) |
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64 #define IsSjisChar2(c) (((c) >= 0x40) && ((c) != 0x7f) && ((c) <= 0xfc)) |
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65 #define IsUserDefinedChar1(c) (((c) >= 0xf0) && ((c) <= 0xfc)) |
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66 |
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67 #define QValidChar(u) ((u) ? QChar((ushort)(u)) : QChar(QChar::ReplacementCharacter)) |
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68 |
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69 /*! |
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70 Creates a Shift-JIS codec. Note that this is done automatically by |
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71 the QApplication, you do not need construct your own. |
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72 */ |
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73 QSjisCodec::QSjisCodec() : conv(QJpUnicodeConv::newConverter(QJpUnicodeConv::Default)) |
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74 { |
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75 } |
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76 |
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77 |
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78 /*! |
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79 Destroys the Shift-JIS codec. |
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80 */ |
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81 QSjisCodec::~QSjisCodec() |
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82 { |
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83 delete (QJpUnicodeConv*)conv; |
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84 conv = 0; |
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85 } |
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86 |
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87 |
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88 QByteArray QSjisCodec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const |
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89 { |
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90 char replacement = '?'; |
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91 if (state) { |
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92 if (state->flags & ConvertInvalidToNull) |
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93 replacement = 0; |
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94 } |
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95 int invalid = 0; |
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96 |
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97 int rlen = 2*len + 1; |
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98 QByteArray rstr; |
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99 rstr.resize(rlen); |
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100 uchar* cursor = (uchar*)rstr.data(); |
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101 for (int i = 0; i < len; i++) { |
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102 QChar ch = uc[i]; |
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103 uint j; |
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104 if (ch.row() == 0x00 && ch.cell() < 0x80) { |
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105 // ASCII |
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106 *cursor++ = ch.cell(); |
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107 } else if ((j = conv->unicodeToJisx0201(ch.row(), ch.cell())) != 0) { |
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108 // JIS X 0201 Latin or JIS X 0201 Kana |
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109 *cursor++ = j; |
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110 } else if ((j = conv->unicodeToSjis(ch.row(), ch.cell())) != 0) { |
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111 // JIS X 0208 |
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112 *cursor++ = (j >> 8); |
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113 *cursor++ = (j & 0xff); |
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114 } else if ((j = conv->unicodeToSjisibmvdc(ch.row(), ch.cell())) != 0) { |
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115 // JIS X 0208 IBM VDC |
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116 *cursor++ = (j >> 8); |
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117 *cursor++ = (j & 0xff); |
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118 } else if ((j = conv->unicodeToCp932(ch.row(), ch.cell())) != 0) { |
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119 // CP932 (for lead bytes 87, ee & ed) |
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120 *cursor++ = (j >> 8); |
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121 *cursor++ = (j & 0xff); |
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122 } else if ((j = conv->unicodeToJisx0212(ch.row(), ch.cell())) != 0) { |
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123 // JIS X 0212 (can't be encoded in ShiftJIS !) |
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124 *cursor++ = 0x81; // white square |
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125 *cursor++ = 0xa0; // white square |
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126 } else { |
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127 // Error |
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128 *cursor++ = replacement; |
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129 ++invalid; |
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130 } |
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131 } |
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132 rstr.resize(cursor - (const uchar*)rstr.constData()); |
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133 |
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134 if (state) { |
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135 state->invalidChars += invalid; |
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136 } |
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137 return rstr; |
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138 } |
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139 |
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140 QString QSjisCodec::convertToUnicode(const char* chars, int len, ConverterState *state) const |
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141 { |
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142 uchar buf[1] = {0}; |
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143 int nbuf = 0; |
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144 QChar replacement = QChar::ReplacementCharacter; |
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145 if (state) { |
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146 if (state->flags & ConvertInvalidToNull) |
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147 replacement = QChar::Null; |
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148 nbuf = state->remainingChars; |
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149 buf[0] = state->state_data[0]; |
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150 } |
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151 int invalid = 0; |
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152 uint u= 0; |
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153 QString result; |
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154 for (int i=0; i<len; i++) { |
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155 uchar ch = chars[i]; |
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156 switch (nbuf) { |
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157 case 0: |
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158 if (ch < 0x80 || IsKana(ch)) { |
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159 // JIS X 0201 Latin or JIS X 0201 Kana |
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160 u = conv->jisx0201ToUnicode(ch); |
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161 result += QValidChar(u); |
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162 } else if (IsSjisChar1(ch)) { |
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163 // JIS X 0208 |
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164 buf[0] = ch; |
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165 nbuf = 1; |
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166 } else { |
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167 // Invalid |
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168 result += replacement; |
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169 ++invalid; |
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170 } |
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171 break; |
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172 case 1: |
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173 // JIS X 0208 |
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174 if (IsSjisChar2(ch)) { |
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175 if ((u = conv->sjisibmvdcToUnicode(buf[0], ch))) { |
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176 result += QValidChar(u); |
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177 } else if ((u = conv->cp932ToUnicode(buf[0], ch))) { |
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178 result += QValidChar(u); |
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179 } |
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180 else if (IsUserDefinedChar1(buf[0])) { |
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181 result += QChar::ReplacementCharacter; |
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182 } else { |
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183 u = conv->sjisToUnicode(buf[0], ch); |
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184 result += QValidChar(u); |
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185 } |
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186 } else { |
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187 // Invalid |
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188 result += replacement; |
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189 ++invalid; |
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190 } |
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191 nbuf = 0; |
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192 break; |
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193 } |
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194 } |
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195 |
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196 if (state) { |
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197 state->remainingChars = nbuf; |
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198 state->state_data[0] = buf[0]; |
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199 state->invalidChars += invalid; |
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200 } |
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201 return result; |
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202 } |
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203 |
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204 |
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205 int QSjisCodec::_mibEnum() |
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206 { |
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207 return 17; |
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208 } |
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209 |
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210 QByteArray QSjisCodec::_name() |
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211 { |
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212 return "Shift_JIS"; |
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213 } |
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214 |
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215 /*! |
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216 Returns the codec's mime name. |
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217 */ |
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218 QList<QByteArray> QSjisCodec::_aliases() |
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219 { |
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220 QList<QByteArray> list; |
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221 list << "SJIS" // Qt 3 compat |
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222 << "MS_Kanji"; |
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223 return list; |
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224 } |
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225 #endif // QT_NO_TEXTCODEC |
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226 |
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227 QT_END_NAMESPACE |