Linux Certif

Toute la documentation sur la certification Linux LPI

NetSDS::Util::String.3pm

NAME

NetSDS::Util::String - string prcessing routines

SYNOPSIS

         use NetSDS::Util::String qw();
 
         # Read from standard input
         my $string = <STDIN>;
 
         # Encode string to internal structure
         $string = string_encode($tring);
 
 

DESCRIPTION

"NetSDS::Util::String" module contains functions may be used to quickly solve string processing tasks like parsing, recoding, formatting.

As in other NetSDS modules standard encoding is UTF-8.

EXPORTED FUNCTIONS

str_encode($str[, $encoding]) - encode string to internal UTF-8

By default this function treat first argument as byte string in UTF-8 and return it's internal Unicode representation.

In case of external character set isn't UTF-8 it should be added as second argument of function.

         # Convert UTF-8 byte string to internal Unicode representation
         $uni_string = str_encode($byte_string);
 
         # Convert KOI8-U byte string to internal
         $uni_string = str_encode($koi8_string, 'KOI8-U');
 
 

After "str_encode()" it's possible to process this string correctly including regular expressions. All characters will be understood as UTF-8 symbols instead of byte sequences.

str_decode($str[, $encoding]) - decode internal UTF-8 to byte string

By default this function treat first argument as string in internal UTF-8 and return it in byte string (external) representation.

In case of external character set isn't UTF-8 it should be added as second argument of function.

         # Get UTF-8 byte string from internal Unicode representation
         $byte_string = str_decode($uni_string);
 
         # Convert to KOI8-U byte string from internal Unicode
         $koi8_string = str_encode($uni_string, 'KOI8-U');
 
 

It's recommended to use "str_encode()" when preparing data for communication with external systems (especially networking).

str_recode($str, $FROM_ENC[, $TO_ENC]) - recode string

Translate string between different encodings. If target encoding is not set UTF-8 used as default one.

str_trim($str) - remove leading/trailing space characters

         $orig_str = "  string with spaces   ";
         $new_str = str_trim($orig_str);
 
         # Output: "string with spaces"
         print $new_str;
 
 

str_trim_left($str) - removes leading whitespaces

This function is similar to "str_trim()" except of it removes only leading space characters and leave trailing ones.

str_trim_right($str) - removes trailing whitespaces

This function is similar to "str_trim()" except of it removes only trailing space characters and leave leading ones.

str_clean($str) - clean string from extra spaces

Function is similar to "str_trim()" but also changes all spacing chains inside string to single spaces.

str_camelize($strin)

If pass undef - return undef. If pass '' - return ''.

Examples:

         # returns 'getValue'
         str_camelize( 'get_value' )
 
         # returns 'addUserAction'
         str_camelize( 'ADD_User_actION' )
 
 

str_decamelize(...)

If pass undef - return undef. If pass '' - return ''.

Examples:

         # returns 'get_value'
         str_decamelize( 'getValue' )
 
 

EXAMPLES

None yet

BUGS

Unknown yet

TODO

Implement examples and tests.

SEE ALSO

Encode, perlunicode

AUTHORS

Valentyn Solomko <pere@pere.org.ua>

Michael Bochkaryov <misha@rattler.kiev.ua>