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dpavlin |
1.1 |
-- this is hopefully complete implementation of pg_recode in PL/pgSQL |
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-- it's best for portability and I still have to check it's performance |
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-- 2002-08-30 Dobrica Pavlinusic <dpavlin@rot13.org> |
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-- drop old implementation |
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drop function to1250(text); |
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drop function toczs(text); |
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drop function to88592(text); |
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drop function initcap2(text); |
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-- convert 1250 to 8859-2 |
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create function to88592(text) returns text as ' |
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declare |
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c TEXT = ''''; |
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new TEXT = ''''; |
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pos INTEGER = 1; |
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begin |
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loop |
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c := substr($1,pos,1); |
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if c = '''' then new := new || ''¹''; |
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elsif c = '''' then new := new || ''©''; |
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elsif c = '''' then new := new || ''¾''; |
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elsif c = '''' then new := new || ''®''; |
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else new := new || c; |
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end if; |
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exit when pos = length($1); |
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pos := pos + 1; |
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end loop; |
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return new; |
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end |
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' language 'PLpgSQL'; |
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-- convert 8859-2 to 1250 |
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create function to1250(text) returns text as ' |
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declare |
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c TEXT = ''''; |
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new TEXT = ''''; |
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pos INTEGER = 1; |
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begin |
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loop |
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c := substr($1,pos,1); |
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if c = ''¹'' then new := new || ''''; |
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elsif c = ''©'' then new := new || ''''; |
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elsif c = ''¾'' then new := new || ''''; |
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elsif c = ''®'' then new := new || ''''; |
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else new := new || c; |
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end if; |
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exit when pos = length($1); |
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pos := pos + 1; |
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end loop; |
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return new; |
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end |
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' language 'PLpgSQL'; |
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-- tocsz -- convert iso8859-2 or cp1250 to czs |
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create function toczs(text) returns text as ' |
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declare |
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c TEXT = ''''; |
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new TEXT = ''''; |
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pos INTEGER = 1; |
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begin |
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loop |
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c := substr($1,pos,1); |
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-- 8859-2 |
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if c = ''¹'' then new := new || ''s''; |
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elsif c = ''©'' then new := new || ''S''; |
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elsif c = ''ð'' then new := new || ''dj''; |
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elsif c = ''Ð'' then new := new || ''Dj''; |
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elsif c = ''è'' then new := new || ''c''; |
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elsif c = ''È'' then new := new || ''C''; |
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elsif c = ''æ'' then new := new || ''c''; |
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elsif c = ''Æ'' then new := new || ''C''; |
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elsif c = ''¾'' then new := new || ''z''; |
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elsif c = ''®'' then new := new || ''Z''; |
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-- 1250 |
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elsif c = '''' then new := new || ''s''; |
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elsif c = '''' then new := new || ''S''; |
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elsif c = '''' then new := new || ''z''; |
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elsif c = '''' then new := new || ''Z''; |
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else new := new || c; |
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end if; |
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exit when pos = length($1); |
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pos := pos + 1; |
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end loop; |
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return new; |
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end |
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' language 'PLpgSQL'; |
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-- initcap2 -- initcap whith support for iso8859-2 or cp1250 |
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create function initcap2(text) returns text as ' |
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declare |
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c TEXT = ''''; |
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new TEXT = ''''; |
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pos INTEGER = 1; |
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first INTEGER = 1; |
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begin |
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loop |
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c := substr($1,pos,1); |
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-- new := new || ''['' || pos || '':'' || first || '']''; |
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-- 8859-2 |
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if first = 1 then |
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if c = ''¹'' then new := new || ''©''; |
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elsif c = ''ð'' then new := new || ''Ð''; |
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elsif c = ''è'' then new := new || ''È''; |
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elsif c = ''æ'' then new := new || ''Æ''; |
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elsif c = ''¾'' then new := new || ''®''; |
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-- 1250 |
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elsif c = '''' then new := new || ''©''; |
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elsif c = '''' then new := new || ''©''; |
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elsif c = '''' then new := new || ''®''; |
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elsif c = '''' then new := new || ''®''; |
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else new := new || upper(c); |
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end if; |
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else |
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if c = ''©'' then new := new || ''¹''; |
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elsif c = ''Ð'' then new := new || ''ð''; |
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elsif c = ''È'' then new := new || ''è''; |
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elsif c = ''Æ'' then new := new || ''æ''; |
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elsif c = ''®'' then new := new || ''¾''; |
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-- 1250 |
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elsif c = '''' then new := new || ''¹''; |
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elsif c = '''' then new := new || ''¹''; |
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elsif c = '''' then new := new || ''¾''; |
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elsif c = '''' then new := new || ''¾''; |
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else new := new || lower(c); |
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end if; |
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end if; |
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exit when pos = length($1); |
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pos := pos + 1; |
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if c = '' '' or c = ''.'' or c = ''-'' then |
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first = 1; |
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else |
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first = 0; |
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end if; |
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end loop; |
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return new; |
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end |
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' language 'PLpgSQL'; |
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