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annotate base/src/java/mangoicu/UStringPrep.d @ 27:1bf55a6eb092

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Renamed java tree to base
author Frank Benoit <benoit@tionex.de>
date Sat, 21 Mar 2009 11:33:57 +0100
parents java/src/java/mangoicu/UStringPrep.d@dbfb303e8fb0
children
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1 /*******************************************************************************
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2
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3 @file UStringPrep.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 java.mangoicu.UStringPrep;
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86
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87 private import java.mangoicu.ICU,
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88 java.mangoicu.UString;
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89
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90 /*******************************************************************************
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91
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92 StringPrep API implements the StingPrep framework as described
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93 by RFC 3454.
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94
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95 StringPrep prepares Unicode strings for use in network protocols.
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96 Profiles of StingPrep are set of rules and data according to with
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97 the Unicode Strings are prepared. Each profiles contains tables
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98 which describe how a code point should be treated. The tables are
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99 broadly classied into
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100
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101 - Unassinged Table: Contains code points that are unassigned
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102 in the Unicode Version supported by StringPrep. Currently
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103 RFC 3454 supports Unicode 3.2.
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104
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105 - Prohibited Table: Contains code points that are prohibted
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106 from the output of the StringPrep processing function.
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107
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108 - Mapping Table: Contains code ponts that are deleted from the
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109 output or case mapped.
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110
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111 The procedure for preparing Unicode strings:
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112
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113 1. Map: For each character in the input, check if it has a mapping
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114 and, if so, replace it with its mapping.
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115
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116 2. Normalize: Possibly normalize the result of step 1 using Unicode
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117 normalization.
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118
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119 3. Prohibit: Check for any characters that are not allowed in the
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120 output. If any are found, return an error.
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121
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122 4. Check bidi: Possibly check for right-to-left characters, and if
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123 any are found, make sure that the whole string satisfies the
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124 requirements for bidirectional strings. If the string does not
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125 satisfy the requirements for bidirectional strings, return an
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126 error.
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127
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128 See <A HREF="http://oss.software.ibm.com/icu/apiref/usprep_8h.html">
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129 this page</A> for full details.
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130
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131 *******************************************************************************/
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132
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133 class UStringPrep : ICU
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134 {
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135 private Handle handle;
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136
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137 enum Options
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138 {
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139 Strict,
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140 Lenient
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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
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146 Creates a StringPrep profile from the data file.
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147
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148 path string containing the full path pointing
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149 to the directory where the profile reside
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150 followed by the package name e.g.
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151 "/usr/resource/my_app/profiles/mydata" on
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152 a Unix system. if NULL, ICU default data
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153 files will be used.
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154
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155 fileName name of the profile file to be opened
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156
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157 ***********************************************************************/
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158
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159 this (char[] path, char[] filename)
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160 {
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161 UErrorCode e;
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162
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163 handle = usprep_open (toString(path), toString(filename), e);
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164 testError (e, "failed to open string-prep");
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165 }
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166
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167 /***********************************************************************
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168
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169 Close this profile
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170
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171 ***********************************************************************/
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172
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173 ~this ()
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174 {
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175 usprep_close (handle);
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176 }
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177
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178 /***********************************************************************
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179
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180 Prepare the input buffer
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181
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182 This operation maps, normalizes(NFKC), checks for prohited
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183 and BiDi characters in the order defined by RFC 3454 depending
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184 on the options specified in the profile
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185
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186 ***********************************************************************/
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187
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188 void prepare (UStringView src, UString dst, Options o = Options.Strict)
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189 {
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190 uint fmt (wchar* p, uint len, inout UErrorCode e)
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191 {
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192 return usprep_prepare (handle, src.get.ptr, src.len, p, len, o, null, e);
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193 }
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194
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195 dst.format (&fmt, "failed to prepare text");
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196 }
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197
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198
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199 /***********************************************************************
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200
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201 Bind the ICU functions from a shared library. This is
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202 complicated by the issues regarding D and DLLs on the
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203 Windows platform
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204
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205 ***********************************************************************/
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206
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207 private static void* library;
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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
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213 private static extern (C)
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214 {
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215 Handle function (char*, char*, inout UErrorCode) usprep_open;
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216 void function (Handle) usprep_close;
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217 uint function (Handle, wchar*, uint, wchar*, uint, uint, void*, inout UErrorCode) usprep_prepare;
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218 }
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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 static FunctionLoader.Bind[] targets =
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225 [
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226 {cast(void**) &usprep_open, "usprep_open"},
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227 {cast(void**) &usprep_close, "usprep_close"},
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228 {cast(void**) &usprep_prepare, "usprep_prepare"},
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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
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235 static this ()
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236 {
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237 library = FunctionLoader.bind (icuuc, targets);
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238 }
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239
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240 /***********************************************************************
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241
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242 ***********************************************************************/
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243
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244 static ~this ()
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245 {
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246 FunctionLoader.unbind (library);
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247 }
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248 }
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249