Mercurial > projects > dwt-linux
annotate dwt/dwthelper/utils.d @ 179:e4e5dea57644
Add several functions to support utf8 stuff
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 02 Mar 2008 18:13:12 +0100 |
parents | de2578a843a7 |
children | 1fa3c8d88486 |
rev | line source |
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12 | 1 /** |
2 * Authors: Frank Benoit <keinfarbton@googlemail.com> | |
3 */ | |
4 module dwt.dwthelper.utils; | |
5 | |
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6 public import dwt.dwthelper.System; |
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7 public import Math = tango.math.Math; |
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8 |
12 | 9 import tango.io.Stdout; |
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10 import tango.stdc.stringz; |
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11 static import tango.text.Util; |
109 | 12 import tango.text.Unicode; |
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13 import tango.text.convert.Utf; |
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14 import tango.core.Exception; |
12 | 15 import tango.stdc.stdlib : exit; |
16 | |
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17 import tango.util.log.Trace; |
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18 |
12 | 19 void implMissing( char[] file, uint line ){ |
20 Stderr.formatln( "implementation missing in file {} line {}", file, line ); | |
21 Stderr.formatln( "exiting ..." ); | |
22 exit(1); | |
23 } | |
24 | |
26 | 25 abstract class ArrayWrapper{ |
26 } | |
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27 abstract class ValueWrapper{ |
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28 } |
26 | 29 |
30 class ArrayWrapperT(T) : ArrayWrapper { | |
27 | 31 public T[] array; |
32 public this( T[] data ){ | |
33 array = data; | |
34 } | |
26 | 35 } |
36 | |
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37 class ValueWrapperT(T) : ValueWrapper { |
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38 public T value; |
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39 public this( T data ){ |
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40 value = data; |
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41 } |
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42 } |
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43 |
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44 alias ValueWrapperT!(bool) ValueWrapperBool; |
92 | 45 alias ArrayWrapperT!(byte) ArrayWrapperByte; |
46 alias ArrayWrapperT!(int) ArrayWrapperInt; | |
47 alias ArrayWrapperT!(Object) ArrayWrapperObject; | |
48 alias ArrayWrapperT!(char) ArrayWrapperString; | |
49 alias ArrayWrapperT!(char[]) ArrayWrapperString2; | |
26 | 50 |
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51 int codepointIndexToIndex( char[] str, int cpIndex ){ |
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52 int cps = cpIndex; |
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53 int res = 0; |
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54 while( cps > 0 ){ |
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55 cps--; |
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56 if( str[res] < 0x80 ){ |
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57 res+=1; |
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58 } |
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59 else if( str[res] < 0xE0 ){ |
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60 res+=2; |
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61 } |
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62 else if( str[res] & 0xF0 ){ |
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63 res+=3; |
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64 } |
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65 else{ |
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66 res+=4; |
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67 } |
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68 } |
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69 return res; |
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70 } |
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71 int indexToCodepointIndex( char[] str, int index ){ |
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72 int i = 0; |
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73 int res = 0; |
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74 while( i < index ){ |
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75 if( str[i] < 0x80 ){ |
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76 i+=1; |
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77 } |
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78 else if( str[i] < 0xE0 ){ |
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79 i+=2; |
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80 } |
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81 else if( str[i] & 0xF0 ){ |
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82 i+=3; |
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83 } |
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84 else{ |
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85 i+=4; |
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86 } |
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87 res++; |
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88 } |
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89 return res; |
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90 } |
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91 |
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92 char[] firstCodePointStr( char[] str, out int consumed ){ |
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93 dchar[1] buf; |
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94 uint ate; |
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95 dchar[] res = str.toString32( buf, &ate ); |
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96 consumed = ate; |
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97 return str[ 0 .. ate ]; |
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98 } |
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99 |
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100 dchar firstCodePoint( char[] str ){ |
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101 int dummy; |
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102 return firstCodePoint( str, dummy ); |
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103 } |
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104 dchar firstCodePoint( char[] str, out int consumed ){ |
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105 dchar[1] buf; |
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106 uint ate; |
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107 dchar[] res = str.toString32( buf, &ate ); |
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108 consumed = ate; |
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109 if( ate is 0 || res.length is 0 ){ |
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110 Trace.formatln( "dwthelper.utils {}: str.length={} str={:X2}", __LINE__, str.length, cast(ubyte[])str ); |
109 | 111 } |
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112 assert( ate > 0 ); |
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113 assert( res.length is 1 ); |
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114 return res[0]; |
103 | 115 } |
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116 |
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117 char[] dcharToString( dchar key ){ |
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118 dchar[1] buf; |
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119 buf[0] = key; |
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120 return tango.text.convert.Utf.toString( buf ); |
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121 } |
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122 |
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123 int codepointCount( char[] str ){ |
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124 scope dchar[] buf = new dchar[]( str.length ); |
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125 uint ate; |
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126 dchar[] res = tango.text.convert.Utf.toString32( str, buf, &ate ); |
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127 Trace.formatln( "dwthelper.utils codepointCount {}: res.length={}", __LINE__, res.length ); |
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128 assert( ate is str.length ); |
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129 return res.length; |
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130 } |
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131 |
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132 alias tango.text.convert.Utf.toString16 toString16; |
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133 alias tango.text.convert.Utf.toString toString; |
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134 |
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135 int getRelativeCodePointOffset( char[] str, int startIndex, int searchRelCp ){ |
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136 int ignore; |
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137 int i = startIndex; |
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138 if( searchRelCp > 0 ){ |
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139 while( searchRelCp !is 0 ){ |
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140 |
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141 if( ( i < str.length ) |
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142 && ( str[i] & 0x80 ) is 0x00 ) |
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143 { |
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144 i+=1; |
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145 } |
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146 else if( ( i+1 < str.length ) |
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147 && (( str[i+1] & 0xC0 ) is 0x80 ) |
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148 && (( str[i ] & 0xE0 ) is 0xC0 )) |
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149 { |
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150 i+=2; |
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151 } |
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152 else if( ( i+2 < str.length ) |
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153 && (( str[i+2] & 0xC0 ) is 0x80 ) |
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154 && (( str[i+1] & 0xC0 ) is 0x80 ) |
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155 && (( str[i ] & 0xF0 ) is 0xE0 )) |
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156 { |
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157 i+=3; |
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158 } |
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159 else if(( i+3 < str.length ) |
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160 && (( str[i+3] & 0xC0 ) is 0x80 ) |
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161 && (( str[i+2] & 0xC0 ) is 0x80 ) |
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162 && (( str[i+1] & 0xC0 ) is 0x80 ) |
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163 && (( str[i ] & 0xF8 ) is 0xF0 )) |
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164 { |
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165 i+=4; |
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166 } |
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167 else{ |
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168 tango.text.convert.Utf.onUnicodeError( "invalid utf8 input", i ); |
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169 } |
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170 searchRelCp--; |
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171 } |
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172 } |
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173 else if( searchRelCp < 0 ){ |
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174 while( searchRelCp !is 0 ){ |
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175 do{ |
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176 i--; |
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177 if( i < 0 ){ |
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178 Trace.formatln( "dwthelper.utils getRelativeCodePointOffset {}: str={}, startIndex={}, searchRelCp={}", __LINE__, str, startIndex, searchRelCp ); |
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179 tango.text.convert.Utf.onUnicodeError( "invalid utf8 input", i ); |
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180 } |
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181 } while(( str[i] & 0xC0 ) is 0x80 ); |
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182 searchRelCp++; |
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183 } |
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184 } |
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185 return i - startIndex; |
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186 } |
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187 dchar getRelativeCodePoint( char[] str, int startIndex, int searchRelCp, out int relIndex ){ |
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188 relIndex = getRelativeCodePointOffset( str, startIndex, searchRelCp ); |
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189 int ignore; |
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190 return firstCodePoint( str[ startIndex+relIndex .. $ ], ignore ); |
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191 } |
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192 |
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193 int utf8AdjustOffset( char[] str, int offset ){ |
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194 if( str.length <= offset || offset <= 0 ){ |
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195 return offset; |
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196 } |
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197 while(( str[offset] & 0xC0 ) is 0x80 ){ |
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198 offset--; |
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199 } |
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200 return offset; |
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201 } |
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202 |
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203 dchar CharacterFirstToLower( char[] str ){ |
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204 int consumed; |
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205 return CharacterFirstToLower( str, consumed ); |
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206 } |
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207 dchar CharacterFirstToLower( char[] str, out int consumed ){ |
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208 dchar[1] buf; |
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209 buf[0] = firstCodePoint( str, consumed ); |
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210 dchar[] r = tango.text.Unicode.toLower( buf ); |
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211 return r[0]; |
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212 } |
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213 |
103 | 214 dchar CharacterToLower( dchar c ){ |
215 dchar[] r = tango.text.Unicode.toLower( [c] ); | |
216 return r[0]; | |
217 } | |
218 dchar CharacterToUpper( dchar c ){ | |
219 dchar[] r = tango.text.Unicode.toUpper( [c] ); | |
220 return r[0]; | |
221 } | |
158
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222 bool CharacterIsWhitespace( dchar c ){ |
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223 return tango.text.Unicode.isWhitespace( c ); |
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224 } |
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225 bool CharacterIsDigit( dchar c ){ |
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226 return tango.text.Unicode.isDigit( c ); |
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227 } |
26 | 228 |
158
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229 public int indexOf( char[] str, char searched ){ |
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230 int res = tango.text.Util.locate( str, searched ); |
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231 if( res is str.length ) res = -1; |
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232 return res; |
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233 } |
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234 |
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235 public int indexOf( char[] str, char searched, int startpos ){ |
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236 int res = tango.text.Util.locate( str, searched, startpos ); |
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237 if( res is str.length ) res = -1; |
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238 return res; |
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239 } |
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240 |
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241 public int indexOf(char[] str, char[] ch){ |
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242 return indexOf( str, ch, 0 ); |
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243 } |
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244 |
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245 public int indexOf(char[] str, char[] ch, int start){ |
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246 int res = tango.text.Util.locatePattern( str, ch, start ); |
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247 if( res is str.length ) res = -1; |
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248 return res; |
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249 } |
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250 |
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251 public char[] substring( char[] str, int start ){ |
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252 return str[ start .. $ ].dup; |
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253 } |
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254 |
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255 public char[] substring( char[] str, int start, int end ){ |
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256 return str[ start .. end ].dup; |
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257 } |
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258 |
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259 public wchar[] substring( wchar[] str, int start ){ |
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260 return str[ start .. $ ].dup; |
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261 } |
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262 |
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263 public wchar[] substring( wchar[] str, int start, int end ){ |
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264 return str[ start .. end ].dup; |
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265 } |
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266 |
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267 public char charAt( char[] str, int pos ){ |
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268 return str[ pos ]; |
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269 } |
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270 |
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271 public void getChars( char[] src, int srcBegin, int srcEnd, char[] dst, int dstBegin){ |
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272 dst[ dstBegin .. dstBegin + srcEnd - srcBegin ] = src[ srcBegin .. srcEnd ]; |
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273 } |
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274 |
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275 public wchar[] toCharArray( char[] str ){ |
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276 return toString16( str ); |
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277 } |
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278 |
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279 public bool endsWith( char[] src, char[] pattern ){ |
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280 if( src.length < pattern.length ){ |
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281 return false; |
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282 } |
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283 return src[ $-pattern.length .. $ ] == pattern; |
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284 } |
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285 |
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286 public bool equals( char[] src, char[] other ){ |
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287 return src == other; |
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288 } |
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289 |
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290 public char[] toLowerCase( char[] src ){ |
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291 return tango.text.Unicode.toLower( src ); |
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292 } |
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293 |
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294 static char[] toHex(uint value, bool prefix = true, int radix = 8){ |
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295 return tango.text.convert.Integer.toString( |
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296 value, |
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297 radix is 10 ? tango.text.convert.Integer.Style.Signed : |
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298 radix is 8 ? tango.text.convert.Integer.Style.Octal : |
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299 radix is 16 ? tango.text.convert.Integer.Style.Hex : |
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300 tango.text.convert.Integer.Style.Signed, |
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301 prefix ? tango.text.convert.Integer.Flags.Prefix : tango.text.convert.Integer.Flags.None |
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302 ); |
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303 } |
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304 |
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305 class NumberFormatException : IllegalArgumentException { |
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306 this( char[] e ){ |
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307 super(e); |
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308 } |
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309 this( Exception e ){ |
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310 super(e.toString); |
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311 } |
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312 } |
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313 |
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314 private struct GCStats { |
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315 size_t poolsize; // total size of pool |
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316 size_t usedsize; // bytes allocated |
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317 size_t freeblocks; // number of blocks marked FREE |
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318 size_t freelistsize; // total of memory on free lists |
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319 size_t pageblocks; // number of blocks marked PAGE |
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320 } |
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321 private extern(C) GCStats gc_stats(); |
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322 |
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323 size_t RuntimeTotalMemory(){ |
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324 GCStats s;// = gc_stats(); |
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325 return s.poolsize; |
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326 } |
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327 |
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328 |
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329 |
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330 |