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Full Discussion: Regex help needed
Top Forums Shell Programming and Scripting Regex help needed Post 302609071 by Bloomy on Monday 19th of March 2012 09:16:04 AM
Old 03-19-2012
Regex help needed
Hello,

I'd like to write a regex that transforms a German base form of a noun into one of its inflected forms, namely

I want to translate "Haus" to "Häuser"

This is what I've got:
Code:
/^(.+)$/_Umlaut( $1 )_er/

where _Umlaut( x )_ is a function operating on the noun stem captured by $1 The function performs the following transformations on the noun stem to model the effect of a typical vowel change in the stem:

Replace last occurrence of vowel [x] according to (vowel change):
Code:
/au/äu/
/a/ä/
/o/ö/
/u/ü/

Return the modified stem

However, this function doesn't work with "au", it only works for words like Topf -> Töpfe

In the case of "Haus", it wrongly outputs "Häüser", so it makes an Umlaut out of both vowels, which I don't want.

Any suggestions on how to tell the function how to perform this step only on the first vowel are appreciated :-)

Thanks and kind regards,
Kat
Last edited by jim mcnamara; 03-19-2012 at 12:11 PM..
 

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LEARN ABOUT CENTOS

th_wcisthdiac

thai/thwctype.h(3)						      libthai							thai/thwctype.h(3)

NAME

       thai/thwctype.h -

       Thai wide-char character classifications.

SYNOPSIS

   Functions
       int th_wcistis (thwchar_t wc)
	   Is the wide character convertible to a valid TIS-620 code?
       int th_wcisthai (thwchar_t wc)
	   Is the wide character a Thai character?
       int th_wciseng (thwchar_t wc)
	   Is the wide character an English character?
       int th_wcisthcons (thwchar_t wc)
	   Is the wide character a Thai consonant?
       int th_wcisthvowel (thwchar_t wc)
	   Is the wide character a Thai vowel?
       int th_wcisthtone (thwchar_t wc)
	   Is the wide character a Thai tone mark?
       int th_wcisthdiac (thwchar_t wc)
	   Is the wide character a Thai diacritic?
       int th_wcisthdigit (thwchar_t wc)
	   Is the character a Thai digit?
       int th_wcisthpunct (thwchar_t wc)
	   Is the character a Thai punctuation?
       int th_wcistaillesscons (thwchar_t wc)
	   Is the wide character a Thai consonant that fits the x-height?
       int th_wcisovershootcons (thwchar_t wc)
	   Is the wide character a Thai consonant with stem above ascender?
       int th_wcisundershootcons (thwchar_t wc)
	   Is the wide character a Thai consonant with stem below baseline?
       int th_wcisundersplitcons (thwchar_t wc)
	   Is the wide character a Thai consonant with split part below baseline?
       int th_wcisldvowel (thwchar_t wc)
	   Is the wide character a Thai leading vowel?
       int th_wcisflvowel (thwchar_t wc)
	   Is the wide character a Thai following vowel?
       int th_wcisupvowel (thwchar_t wc)
	   Is the wide character a Thai upper vowel?
       int th_wcisblvowel (thwchar_t wc)
	   Is the wide character a Thai below vowel?
       int th_wcchlevel (thwchar_t wc)
	   Position for rendering:

Detailed Description
       Thai wide-char character classifications.

Function Documentation
   int th_wcchlevel (thwchar_twc)
       Position for rendering:

       o 3 = above/top
       o 2 = top
       o 1 = above
       o 0 = base
       o -1 = below
   int th_wcistis (thwchar_twc)
       Is the wide character convertible to a valid TIS-620 code? TIS-620 here means US-ASCII plus TIS-620 extension.
Author
       Generated automatically by Doxygen for libthai from the source code.

Version 0.1.14							  Tue Jun 17 2014						thai/thwctype.h(3)
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