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Full Discussion: Regex in if-then-else statement to match strings
Top Forums UNIX for Dummies Questions & Answers Regex in if-then-else statement to match strings Post 302136793 by drl on Wednesday 19th of September 2007 06:01:03 PM
Old 09-19-2007
Hi.
Quote:
Originally Posted by porter
Using a case/esac statement makes regular expressions simple and obvious.

Code:
case $name in
    [ab]{2,3} )
         echo do stuff
         ;;
    * ) 
         ;;
esac

Perhaps I am using a too-old version of bash. Version 3.00.16(1) recognizes the [ab] but not the {2,3} part, apparently because the case selectors are expanded in the same fashion as pathnames, not regular expressions:
Code:
#!/bin/bash3

# @(#) s4       Demonstrate case selectors.

set -o nounset
echo

echo "GNU bash $BASH_VERSION" >&2
echo " MUST USE VERSION 3 FOR REGULAR EXPRESSIONS WITH =~ OPERATOR!"
# See: https://www.unix.com/showthread.php?p=302136557&posted=1#post302136557

echo

# if [ $name = [ab]{2,3} ]; then
name="b"
name="bb"
echo " Original string = \"$name\""

case $name in
[ab]{2,3} )
    echo Success
        ;;
* )
    echo Failure
        ;;
esac

echo
name="b{2,3}"
echo " Original string = \"$name\""

case $name in
[ab]{2,3} )
    echo Success
        ;;
* )
    echo Failure
        ;;
esac

exit 0

producing:
Code:
% ./s4

GNU bash 3.00.16(1)-release
 MUST USE VERSION 3 FOR REGULAR EXPRESSIONS WITH =~ OPERATOR!

 Original string = "bb"
Failure

 Original string = "b{2,3}"
Success

... cheers, drl
 

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LEARN ABOUT PHP

locale_get_display_language

LOCALE_GET_DISPLAY_LANGUAGE(3)						 1					    LOCALE_GET_DISPLAY_LANGUAGE(3)

Locale::getDisplayLanguage - Returns an appropriately localized display name for language of the inputlocale

	Object oriented style

SYNOPSIS

       publicstatic string Locale::getDisplayLanguage (string  $locale, [string  $in_locale])

DESCRIPTION

	Procedural style
       string locale_get_display_language (string  $locale, [string  $in_locale])

	Returns an appropriately localized display name for language of the input locale. If is NULL then the default locale is used.

PARAMETERS

	      o $locale
		- The locale to return a display language for

	      o $in_locale
		- Optional format locale to use to display the language name

RETURN VALUES

	display name of the language for the $locale in the format appropriate for $in_locale.

EXAMPLES

       Example #1

	      locale_get_display_language(3) example

	      <?php
	      echo locale_get_display_language('sl-Latn-IT-nedis', 'en');
	      echo ";
";
	      echo locale_get_display_language('sl-Latn-IT-nedis', 'fr');
	      echo ";
";
	      echo locale_get_display_language('sl-Latn-IT-nedis', 'de');
	      ?>

       Example #2

	      OO example

	      <?php
	      echo Locale::getDisplayLanguage('sl-Latn-IT-nedis', 'en');
	      echo ";
";
	      echo Locale::getDisplayLanguage('sl-Latn-IT-nedis', 'fr');
	      echo ";
";
	      echo Locale::getDisplayLanguage('sl-Latn-IT-nedis', 'de');
	      ?>

       The above example will output:

       Slovenian;
       slovxc3xa8ne;
       Slowenisch

SEE ALSO

       locale_get_display_name(3), locale_get_display_script(3), locale_get_display_region(3), locale_get_display_variant(3).

PHP Documentation Group 											    LOCALE_GET_DISPLAY_LANGUAGE(3)
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