ctype / isprint ?

[Hadmut Danisch]

Hi,

what's the best way to check whether a String consists of printable
characters only? (In C: isprint from ctype)

Maybe would be nice to have the ctype classes as patterns in the
regular expressions.

regards
Hadmut

 

[Daniel Brockman]

Hi Hadmut,

what's the best way to check whether a String consists of
printable characters only? (In C: isprint from ctype)

Maybe would be nice to have the ctype classes as patterns
in the regular expressions.

It's your lucky day:

"a b c" =~ /\A[[rint:]]*\z/ #=> 0

"a \0 c" =~ /\A[[rint:]]*\z/ #=> nil

 

[Ara.T.Howard]

Hi Hadmut,

what's the best way to check whether a String consists of
printable characters only? (In C: isprint from ctype)

Maybe would be nice to have the ctype classes as patterns
in the regular expressions.

It's your lucky day:

"a b c" =~ /\A[[rint:]]*\z/ #=> 0

"a \0 c" =~ /\A[[rint:]]*\z/ #=> nil

is that locale senstive?

-a
--
===============================================================================
| email :: ara [dot] t [dot] howard [at] noaa [dot] gov
| phone :: 303.497.6469
| My religion is very simple. My religion is kindness.
| --Tenzin Gyatso
===============================================================================

 

[Yukihiro Matsumoto]

Hi,

In message "Re: ctype / isprint ?"

|> "a b c" =~ /\A[[rint:]]*\z/ #=> 0
|>
|> "a \0 c" =~ /\A[[rint:]]*\z/ #=> nil
|
|is that locale senstive?

1.8 regex uses C ctype macros, so that it is locale sensitive.
Oniguruma (1.9 regex engine) does not use locales. It uses encoding
information, since C locale model is just not suitable to handle
multiple encoding schemes in a program, like Oniguruma does.

matz.

 

[Hadmut Danisch]

It's your lucky day:

"a b c" =~ /\A[[rint:]]*\z/ #=> 0

"a \0 c" =~ /\A[[rint:]]*\z/ #=> nil

Great, thanks.


(I should start to read the manual...)


Hadmut

 

[Daniel Berger]

Hi,

what's the best way to check whether a String consists of printable
characters only? (In C: isprint from ctype)

Maybe would be nice to have the ctype classes as patterns in the
regular expressions.

regards
Hadmut

See also: http://rubyforge.org/projects/ctype/

Regards,

Dan