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1 /*******************************************************************************
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2
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3 @file UTransform.d
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4
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5 Copyright (c) 2004 Kris Bell
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6
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7 This software is provided 'as-is', without any express or implied
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8 warranty. In no event will the authors be held liable for damages
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9 of any kind arising from the use of this software.
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10
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11 Permission is hereby granted to anyone to use this software for any
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12 purpose, including commercial applications, and to alter it and/or
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13 redistribute it freely, subject to the following restrictions:
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14
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15 1. The origin of this software must not be misrepresented; you must
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16 not claim that you wrote the original software. If you use this
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17 software in a product, an acknowledgment within documentation of
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18 said product would be appreciated but is not required.
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19
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20 2. Altered source versions must be plainly marked as such, and must
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21 not be misrepresented as being the original software.
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22
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23 3. This notice may not be removed or altered from any distribution
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24 of the source.
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25
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26 4. Derivative works are permitted, but they must carry this notice
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27 in full and credit the original source.
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28
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29
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30 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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31
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32
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33 @version Initial version, November 2004
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34 @author Kris
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35
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36 Note that this package and documentation is built around the ICU
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37 project (http://oss.software.ibm.com/icu/). Below is the license
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38 statement as specified by that software:
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39
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40
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41 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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42
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43
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44 ICU License - ICU 1.8.1 and later
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45
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46 COPYRIGHT AND PERMISSION NOTICE
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47
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48 Copyright (c) 1995-2003 International Business Machines Corporation and
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49 others.
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50
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51 All rights reserved.
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52
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53 Permission is hereby granted, free of charge, to any person obtaining a
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54 copy of this software and associated documentation files (the
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55 "Software"), to deal in the Software without restriction, including
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56 without limitation the rights to use, copy, modify, merge, publish,
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57 distribute, and/or sell copies of the Software, and to permit persons
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58 to whom the Software is furnished to do so, provided that the above
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59 copyright notice(s) and this permission notice appear in all copies of
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60 the Software and that both the above copyright notice(s) and this
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61 permission notice appear in supporting documentation.
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62
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63 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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64 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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65 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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66 OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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67 HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
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68 INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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69 FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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70 NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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71 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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72
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73 Except as contained in this notice, the name of a copyright holder
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74 shall not be used in advertising or otherwise to promote the sale, use
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75 or other dealings in this Software without prior written authorization
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76 of the copyright holder.
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77
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78 ----------------------------------------------------------------------
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79
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80 All trademarks and registered trademarks mentioned herein are the
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81 property of their respective owners.
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82
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83 *******************************************************************************/
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84
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85 module dwtx.dwtxhelper.mangoicu.UTransform;
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86
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87 private import dwtx.dwtxhelper.mangoicu.ICU,
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88 dwtx.dwtxhelper.mangoicu.UString;
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89
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90 /*******************************************************************************
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91
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92 See <A HREF="http://oss.software.ibm.com/icu/apiref/utrans_8h.html">
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93 this page</A> for full details.
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94
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95 *******************************************************************************/
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96
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97 class UTransform : ICU
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98 {
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99 private Handle handle;
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100
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101 enum Direction
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102 {
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103 Forward,
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104 Reverse
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105 }
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106
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107
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108 /***********************************************************************
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109
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110 ***********************************************************************/
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111
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112 this (UStringView id)
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113 {
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114 UErrorCode e;
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115
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116 handle = utrans_openU (id.get.ptr, id.len, 0, null, 0, null, e);
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117 testError (e, "failed to open ID transform");
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118 }
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119
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120 /***********************************************************************
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121
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122 ***********************************************************************/
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123
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124 this (UStringView rule, Direction dir)
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125 {
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126 UErrorCode e;
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127
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128 handle = utrans_openU (null, 0, dir, rule.get.ptr, rule.len, null, e);
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129 testError (e, "failed to open rule-based transform");
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130 }
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131
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132 /***********************************************************************
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133
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134 ***********************************************************************/
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135
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136 ~this ()
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137 {
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138 utrans_close (handle);
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139 }
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140
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141 /***********************************************************************
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142
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143 ***********************************************************************/
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144
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145 UStringView getID ()
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146 {
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147 uint len;
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148 wchar *s = utrans_getUnicodeID (handle, len);
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149 return new UStringView (s[0..len]);
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150 }
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151
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152 /***********************************************************************
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153
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154 ***********************************************************************/
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155
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156 UTransform setFilter (UStringView filter)
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157 {
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158 UErrorCode e;
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159
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160 if (filter.length)
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161 utrans_setFilter (handle, filter.get.ptr, filter.len, e);
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162 else
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163 utrans_setFilter (handle, null, 0, e);
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164
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165 testError (e, "failed to set transform filter");
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166 return this;
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167 }
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168
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169 /***********************************************************************
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170
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171 ***********************************************************************/
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172
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173 UTransform execute (UString text)
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174 {
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175 UErrorCode e;
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176 uint textLen = text.len;
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177
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178 utrans_transUChars (handle, text.get.ptr, &textLen, text.content.length, 0, &text.len, e);
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179 testError (e, "failed to execute transform");
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180 return this;
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181 }
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182
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183
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184
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185 /***********************************************************************
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186
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187 Bind the ICU functions from a shared library. This is
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188 complicated by the issues regarding D and DLLs on the
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189 Windows platform
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190
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191 ***********************************************************************/
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192
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193 private static void* library;
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194
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195 /***********************************************************************
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196
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197 ***********************************************************************/
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198
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199 private static extern (C)
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200 {
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201 Handle function (wchar*, uint, uint, wchar*, uint, void*, inout UErrorCode) utrans_openU;
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202 void function (Handle) utrans_close;
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203 wchar* function (Handle, inout uint) utrans_getUnicodeID;
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204 void function (Handle, wchar*, uint, inout UErrorCode) utrans_setFilter;
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205 void function (Handle, wchar*, uint*, uint, uint, uint*, inout UErrorCode) utrans_transUChars;
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206 }
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207
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208 /***********************************************************************
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209
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210 ***********************************************************************/
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211
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212 static FunctionLoader.Bind[] targets =
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213 [
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214 {cast(void**) &utrans_openU, "utrans_openU"},
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215 {cast(void**) &utrans_close, "utrans_close"},
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216 {cast(void**) &utrans_getUnicodeID, "utrans_getUnicodeID"},
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217 {cast(void**) &utrans_setFilter, "utrans_setFilter"},
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218 {cast(void**) &utrans_transUChars, "utrans_transUChars"},
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219 ];
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220
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221 /***********************************************************************
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222
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223 ***********************************************************************/
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224
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225 static this ()
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226 {
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227 library = FunctionLoader.bind (icuin, targets);
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228 }
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229
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230 /***********************************************************************
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231
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232 ***********************************************************************/
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233
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234 static ~this ()
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235 {
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236 FunctionLoader.unbind (library);
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237 }
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238 }
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239
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