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| 129 | .\" ======================================================================== |
| 130 | .\" |
| 131 | .IX Title "Locale::Script 3" |
| 132 | .TH Locale::Script 3 "2001-09-21" "perl v5.8.8" "Perl Programmers Reference Guide" |
| 133 | .SH "NAME" |
| 134 | Locale::Script \- ISO codes for script identification (ISO 15924) |
| 135 | .SH "SYNOPSIS" |
| 136 | .IX Header "SYNOPSIS" |
| 137 | .Vb 2 |
| 138 | \& use Locale::Script; |
| 139 | \& use Locale::Constants; |
| 140 | .Ve |
| 141 | .PP |
| 142 | .Vb 6 |
| 143 | \& $script = code2script('ph'); # 'Phoenician' |
| 144 | \& $code = script2code('Tibetan'); # 'bo' |
| 145 | \& $code3 = script2code('Tibetan', |
| 146 | \& LOCALE_CODE_ALPHA_3); # 'bod' |
| 147 | \& $codeN = script2code('Tibetan', |
| 148 | \& LOCALE_CODE_ALPHA_NUMERIC); # 330 |
| 149 | .Ve |
| 150 | .PP |
| 151 | .Vb 2 |
| 152 | \& @codes = all_script_codes(); |
| 153 | \& @scripts = all_script_names(); |
| 154 | .Ve |
| 155 | .SH "DESCRIPTION" |
| 156 | .IX Header "DESCRIPTION" |
| 157 | The \f(CW\*(C`Locale::Script\*(C'\fR module provides access to the \s-1ISO\s0 |
| 158 | codes for identifying scripts, as defined in \s-1ISO\s0 15924. |
| 159 | For example, Egyptian hieroglyphs are denoted by the two-letter |
| 160 | code 'eg', the three-letter code 'egy', and the numeric code 050. |
| 161 | .PP |
| 162 | You can either access the codes via the conversion routines |
| 163 | (described below), or with the two functions which return lists |
| 164 | of all script codes or all script names. |
| 165 | .PP |
| 166 | There are three different code sets you can use for identifying |
| 167 | scripts: |
| 168 | .IP "\fBalpha\-2\fR" 4 |
| 169 | .IX Item "alpha-2" |
| 170 | Two letter codes, such as 'bo' for Tibetan. |
| 171 | This code set is identified with the symbol \f(CW\*(C`LOCALE_CODE_ALPHA_2\*(C'\fR. |
| 172 | .IP "\fBalpha\-3\fR" 4 |
| 173 | .IX Item "alpha-3" |
| 174 | Three letter codes, such as 'ell' for Greek. |
| 175 | This code set is identified with the symbol \f(CW\*(C`LOCALE_CODE_ALPHA_3\*(C'\fR. |
| 176 | .IP "\fBnumeric\fR" 4 |
| 177 | .IX Item "numeric" |
| 178 | Numeric codes, such as 410 for Hiragana. |
| 179 | This code set is identified with the symbol \f(CW\*(C`LOCALE_CODE_NUMERIC\*(C'\fR. |
| 180 | .PP |
| 181 | All of the routines take an optional additional argument |
| 182 | which specifies the code set to use. |
| 183 | If not specified, it defaults to the two-letter codes. |
| 184 | This is partly for backwards compatibility (previous versions |
| 185 | of Locale modules only supported the alpha\-2 codes), and |
| 186 | partly because they are the most widely used codes. |
| 187 | .PP |
| 188 | The alpha\-2 and alpha\-3 codes are not case\-dependent, |
| 189 | so you can use '\s-1BO\s0', 'Bo', 'bO' or 'bo' for Tibetan. |
| 190 | When a code is returned by one of the functions in |
| 191 | this module, it will always be lower\-case. |
| 192 | .Sh "\s-1SPECIAL\s0 \s-1CODES\s0" |
| 193 | .IX Subsection "SPECIAL CODES" |
| 194 | The standard defines various special codes. |
| 195 | .IP "\(bu" 4 |
| 196 | The standard reserves codes in the ranges \fBqa\fR \- \fBqt\fR, |
| 197 | \&\fBqaa\fR \- \fBqat\fR, and \fB900\fR \- \fB919\fR, for private use. |
| 198 | .IP "\(bu" 4 |
| 199 | \&\fBzx\fR, \fBzxx\fR, and \fB997\fR, are the codes for unwritten languages. |
| 200 | .IP "\(bu" 4 |
| 201 | \&\fBzy\fR, \fBzyy\fR, and \fB998\fR, are the codes for an undetermined script. |
| 202 | .IP "\(bu" 4 |
| 203 | \&\fBzz\fR, \fBzzz\fR, and \fB999\fR, are the codes for an uncoded script. |
| 204 | .PP |
| 205 | The private codes are not recognised by Locale::Script, |
| 206 | but the others are. |
| 207 | .SH "CONVERSION ROUTINES" |
| 208 | .IX Header "CONVERSION ROUTINES" |
| 209 | There are three conversion routines: \f(CW\*(C`code2script()\*(C'\fR, \f(CW\*(C`script2code()\*(C'\fR, |
| 210 | and \f(CW\*(C`script_code2code()\*(C'\fR. |
| 211 | .IP "code2script( \s-1CODE\s0, [ \s-1CODESET\s0 ] )" 4 |
| 212 | .IX Item "code2script( CODE, [ CODESET ] )" |
| 213 | This function takes a script code and returns a string |
| 214 | which contains the name of the script identified. |
| 215 | If the code is not a valid script code, as defined by \s-1ISO\s0 15924, |
| 216 | then \f(CW\*(C`undef\*(C'\fR will be returned: |
| 217 | .Sp |
| 218 | .Vb 1 |
| 219 | \& $script = code2script('cy'); # Cyrillic |
| 220 | .Ve |
| 221 | .IP "script2code( \s-1STRING\s0, [ \s-1CODESET\s0 ] )" 4 |
| 222 | .IX Item "script2code( STRING, [ CODESET ] )" |
| 223 | This function takes a script name and returns the corresponding |
| 224 | script code, if such exists. |
| 225 | If the argument could not be identified as a script name, |
| 226 | then \f(CW\*(C`undef\*(C'\fR will be returned: |
| 227 | .Sp |
| 228 | .Vb 2 |
| 229 | \& $code = script2code('Gothic', LOCALE_CODE_ALPHA_3); |
| 230 | \& # $code will now be 'gth' |
| 231 | .Ve |
| 232 | .Sp |
| 233 | The case of the script name is not important. |
| 234 | See the section \*(L"\s-1KNOWN\s0 \s-1BUGS\s0 \s-1AND\s0 \s-1LIMITATIONS\s0\*(R" below. |
| 235 | .IP "script_code2code( \s-1CODE\s0, \s-1CODESET\s0, \s-1CODESET\s0 )" 4 |
| 236 | .IX Item "script_code2code( CODE, CODESET, CODESET )" |
| 237 | This function takes a script code from one code set, |
| 238 | and returns the corresponding code from another code set. |
| 239 | .Sp |
| 240 | .Vb 3 |
| 241 | \& $alpha2 = script_code2code('jwi', |
| 242 | \& LOCALE_CODE_ALPHA_3 => LOCALE_CODE_ALPHA_2); |
| 243 | \& # $alpha2 will now be 'jw' (Javanese) |
| 244 | .Ve |
| 245 | .Sp |
| 246 | If the code passed is not a valid script code in |
| 247 | the first code set, or if there isn't a code for the |
| 248 | corresponding script in the second code set, |
| 249 | then \f(CW\*(C`undef\*(C'\fR will be returned. |
| 250 | .SH "QUERY ROUTINES" |
| 251 | .IX Header "QUERY ROUTINES" |
| 252 | There are two function which can be used to obtain a list of all codes, |
| 253 | or all script names: |
| 254 | .ie n .IP """all_script_codes ( [ CODESET ] )""" 4 |
| 255 | .el .IP "\f(CWall_script_codes ( [ CODESET ] )\fR" 4 |
| 256 | .IX Item "all_script_codes ( [ CODESET ] )" |
| 257 | Returns a list of all two-letter script codes. |
| 258 | The codes are guaranteed to be all lower\-case, |
| 259 | and not in any particular order. |
| 260 | .ie n .IP """all_script_names ( [ CODESET ] )""" 4 |
| 261 | .el .IP "\f(CWall_script_names ( [ CODESET ] )\fR" 4 |
| 262 | .IX Item "all_script_names ( [ CODESET ] )" |
| 263 | Returns a list of all script names for which there is a corresponding |
| 264 | script code in the specified code set. |
| 265 | The names are capitalised, and not returned in any particular order. |
| 266 | .SH "EXAMPLES" |
| 267 | .IX Header "EXAMPLES" |
| 268 | The following example illustrates use of the \f(CW\*(C`code2script()\*(C'\fR function. |
| 269 | The user is prompted for a script code, and then told the corresponding |
| 270 | script name: |
| 271 | .PP |
| 272 | .Vb 1 |
| 273 | \& $| = 1; # turn off buffering |
| 274 | .Ve |
| 275 | .PP |
| 276 | .Vb 11 |
| 277 | \& print "Enter script code: "; |
| 278 | \& chop($code = <STDIN>); |
| 279 | \& $script = code2script($code, LOCALE_CODE_ALPHA_2); |
| 280 | \& if (defined $script) |
| 281 | \& { |
| 282 | \& print "$code = $script\en"; |
| 283 | \& } |
| 284 | \& else |
| 285 | \& { |
| 286 | \& print "'$code' is not a valid script code!\en"; |
| 287 | \& } |
| 288 | .Ve |
| 289 | .SH "KNOWN BUGS AND LIMITATIONS" |
| 290 | .IX Header "KNOWN BUGS AND LIMITATIONS" |
| 291 | .IP "\(bu" 4 |
| 292 | When using \f(CW\*(C`script2code()\*(C'\fR, the script name must currently appear |
| 293 | exactly as it does in the source of the module. For example, |
| 294 | .Sp |
| 295 | .Vb 1 |
| 296 | \& script2code('Egyptian hieroglyphs') |
| 297 | .Ve |
| 298 | .Sp |
| 299 | will return \fBeg\fR, as expected. But the following will all return \f(CW\*(C`undef\*(C'\fR: |
| 300 | .Sp |
| 301 | .Vb 2 |
| 302 | \& script2code('hieroglyphs') |
| 303 | \& script2code('Egyptian Hieroglypics') |
| 304 | .Ve |
| 305 | .Sp |
| 306 | If there's need for it, a future version could have variants |
| 307 | for script names. |
| 308 | .IP "\(bu" 4 |
| 309 | In the current implementation, all data is read in when the |
| 310 | module is loaded, and then held in memory. |
| 311 | A lazy implementation would be more memory friendly. |
| 312 | .SH "SEE ALSO" |
| 313 | .IX Header "SEE ALSO" |
| 314 | .IP "Locale::Language" 4 |
| 315 | .IX Item "Locale::Language" |
| 316 | \&\s-1ISO\s0 two letter codes for identification of language (\s-1ISO\s0 639). |
| 317 | .IP "Locale::Currency" 4 |
| 318 | .IX Item "Locale::Currency" |
| 319 | \&\s-1ISO\s0 three letter codes for identification of currencies |
| 320 | and funds (\s-1ISO\s0 4217). |
| 321 | .IP "Locale::Country" 4 |
| 322 | .IX Item "Locale::Country" |
| 323 | \&\s-1ISO\s0 three letter codes for identification of countries (\s-1ISO\s0 3166) |
| 324 | .IP "\s-1ISO\s0 15924" 4 |
| 325 | .IX Item "ISO 15924" |
| 326 | The \s-1ISO\s0 standard which defines these codes. |
| 327 | .IP "http://www.evertype.com/standards/iso15924/" 4 |
| 328 | .IX Item "http://www.evertype.com/standards/iso15924/" |
| 329 | Home page for \s-1ISO\s0 15924. |
| 330 | .SH "AUTHOR" |
| 331 | .IX Header "AUTHOR" |
| 332 | Neil Bowers <neil@bowers.com> |
| 333 | .SH "COPYRIGHT" |
| 334 | .IX Header "COPYRIGHT" |
| 335 | Copyright (c) 2002\-2004 Neil Bowers. |
| 336 | .PP |
| 337 | This module is free software; you can redistribute it and/or |
| 338 | modify it under the same terms as Perl itself. |