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Full Discussion: Regex to identify illegal characters in a perso-arabic database
Top Forums Shell Programming and Scripting Regex to identify illegal characters in a perso-arabic database Post 303002501 by gimley on Friday 25th of August 2017 11:01:53 PM
Old 08-26-2017
Regex to identify illegal characters in a perso-arabic database
I am working on Sindhi: a perso-Arabic script and since it shares the Unicode-block with over 400 other languages, quite often the database contains characters which are not wanted: illegal characters.
I have identified the character set of Sindhi which is given below:
For clarity's sake, each character is demarcated by an apostrophe followed by a comma
Code:
['ا','ب','ٻ','پ','ڀ','ت','ٺ','ٽ','ث','ٿ','ف','ڦ','گ','ڳ','ڱ','ک','ي','د','ذ','ڌ','ڏ','ڊ','ڍ','ح','ج','ڄ','ڃ','چ','ڇ','خ','ع','غ','ر','ڙ','م','ن','ل','س','ش','و','ق','ص','ض','ڻ','ط','ظ','ھ','جھ','گھ','ڪ','ء','ه','آ']

I wrote a regex in Unix to identify all words where the Sindhi character set does not exist.
Code:
^[^ابٻپڀتٺٽثٿفڦگڳڱکيدذڌڏڊڍحجڄڃچڇخعغرڙمنلسشوقصضڻطظھجھگھڪءهآ]+$

The syntax being: find all strings where the given characters are not found.
However the regex does not work. What went wrong? Do I need to put a comma after every character ?
I am giving below a small sample database where there are words having both legal and illegal characters
Code:
آبادلاهورپشاورڪوئٽه
اپریل
ای
ایڈریس
بيورو
جائے
جنوری
جوابدارشاهد
خانوں
دتجايا
دیں
روحناي
سنڌسماءَچار
سے
ضروری
فروری
مئی
منقتل
میل
نيشنلاسلام
ویب*
پاڪستانسنڌمقامي
پوڻان
ڊ
کریں
کیا
ڪراچي-حيدرآباد
گرميت
گھنٹے
گیا

Any help given would be greatly appreciated. Many thanks in advance
 

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LEARN ABOUT MOJAVE

locale::codes::langext5.18

Locale::Codes::LangExt(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangExt(3pm)

NAME

       Locale::Codes::LangExt - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2013-11-04					       Locale::Codes::LangExt(3pm)
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