Locale::Codes::API - a description of the callable function in each module |
Locale::Codes::API - a description of the callable function in each module
Although there are several modules in the Locale-Codes distribution, all of them (as of version 3.10) use exactly the same API. As a matter of fact, each of the main callable modules are just wrappers around a central module which does all the real work.
In order to maintain the documentation for the modules consistently, the functions are all documented here, rather than in the documentation for the separate modules.
The name of the function depends on the module. For example, every module
contains a function code2XXX
where XXX refers to the type of data.
The values of XXX are described in the following table:
XXX MODULE
country Locale::Codes::Country language Locale::Codes::Language currency Locale::Codes::Currency script Locale::Codes::Script langext Locale::Codes::LangExt langvar Locale::Codes::LangVar langfam Locale::Codes::LangFam
So, the the Locale::Country manpage module contains the function code2country
, the
the Locale::Language manpage module contains the function code2language
, etc.
In all of the functions below, CODE refers to a code for one element in the code set. For example, in the two-letter country codes from ISO 3166-1, the code 'fi' is used to refer to the country Finland. CODE is always case insensitive when passed in as an argument, so 'fi', 'FI', and 'Fi' would all be equivalent arguments. When CODE is returned from an argument, it will always be in the case as used in the standard.
CODESET refers to a constant specified in the documentation for each module to label the various code sets. For example, in the the Locale::Language manpage module, CODESET could be LOCALE_CODE_ALPHA_2 or LOCALE_CODE_ALPHA_3 (among others). Most functions have a default one, so they do not need to be specified. So the following calls are valid:
code2country("fi"); code2country("fi",LOCALE_CODE_ALPHA_2); code2country("fin",LOCALE_CODE_ALPHA_3);
Since LOCALE_CODE_ALPHA_2 is the default code set, the first two are identical.
undef
will be returned.
The name of the element is the name as specified in the standard, and as a result, different variations of an element name may be returned for different values of CODESET.
For example, the alpha-2 country code set defines the two-letter code ``bo'' to be ``Bolivia, Plurinational State of'', whereas the alpha-3 code set defines the code 'bol' to be the country ``Bolivia (Plurinational State of)''. So:
code2country('bo',LOCALE_CODE_ALPHA_2); => 'Bolivia, Plurinational State of'
code2country('bol',LOCALE_CODE_ALPHA_3); => 'Bolivia (Plurinational State of)'
By default, only active codes will be used, but if the string 'retired' is passed in as an argument, both active and retired codes will be examined.
undef
will be returned.
The name is not case sensitive. Also, any known variation of a name may be passed in.
For example, even though the country name returned using LOCALE_CODE_ALPHA_2 and LOCALE_CODE_ALPHA_3 country codes for Bolivia is different, either country name may be passed in since for each code set (in addition to the alias 'Bolivia'). So:
country2code('Bolivia, Plurinational State of', LOCALE_CODE_ALPHA_2); => bo
country2code('Bolivia (Plurinational State of)', LOCALE_CODE_ALPHA_2); => bo
country2code('Bolivia',LOCALE_CODE_ALPHA_2); => bo
By default, only active names will be used, but if the string 'retired' is passed in as an argument, both active and retired names will be examined.
undef
will be returned.
Both CODESET and CODESET2 must be explicitly entered.
country_code2code('fin', LOCALE_CODE_ALPHA_3, LOCALE_CODE_ALPHA_2); => 'fi'
Note that this function does NOT support retired codes.
By default, only active codes will be returned, but if the string 'retired' is passed in as an argument, both active and retired codes will be returned.
The names returned are exactly as they are specified in the standard, and are sorted.
Since not all elements are listed in all code sets, the list of elements may differ depending on the code set specified.
By default, only active names will be returned, but if the string 'retired' is passed in as an argument, both active and retired names will be returned.
Additional semi-private routines which may be used to modify the internal data are also available. Given their status, they aren't exported, and so need to be called by prefixing the function name with the package name.
These routines do not currently work with retired codes.
code2XXX
routine would be
NEW_NAME instead of the name specified in the standard.
The original name will remain as an alias.
For example, the official country name for code 'gb' is 'United Kingdom'. If you want to change that, you might call:
Locale::Codes::Country::rename_country('gb', 'Great Britain');
This means that calling code2country('gb')
will now return 'Great
Britain' instead of 'United Kingdom'.
If any error occurs, a warning is issued and 0 is returned. An error occurs if CODE doesn't exist in the specified code set, or if NEW_NAME is already in use but for a different element.
If the routine succeeds, 1 is returned.
Both CODE and NAME must be unused in the data set or an error occurs (though NAME may be used in a different data set).
For example, to create the fictitious country named ``Duchy of Grand Fenwick'' with codes ``gf'' and ``fen'', use the following:
Locale::Codes::Country::add_country("fe","Duchy of Grand Fenwick", LOCALE_CODE_ALPHA_2);
Locale::Codes::Country::add_country("fen","Duchy of Grand Fenwick", LOCALE_CODE_ALPHA_3);
The return value is 1 on success, 0 on an error.
CODE must refer to an existing code in the code set.
The return value is 1 on success, 0 on an error.
code2XXX
function.
NAME must be an existing element name, and NEW_NAME must be unused or an error occurs.
The return value is 1 on success, 0 on an error.
NAME must be one of a list of at least two names that may be used to
specify an element. If the element may only be referred to by a single
name, you'll need to use the add_XXX_alias
function to add a new alias
first, or the remove_XXX
function to remove the element entirely.
If the alias is used as the name in any code set, one of the other
names will be used instead. Predicting exactly which one will
be used requires you to know the order in which the standards
were read, which is not reliable, so you may want to use the
rename_XXX
function to force one of the alternate names to be
used.
The return value is 1 on success, 0 on an error.
XXX2code
routine would be
NEW_CODE instead of the code specified in the standard.
NEW_CODE may either be a code that is not in use, or it may be an alias for CODE (in which case, CODE becomes and alias and NEW_CODE becomes the ``real'' code).
The original code is kept as an alias, so that the code2XXX
routines
will work with either the code from the standard or the new code.
However, the all_XXX_codes
routine will only return the codes which
are considered ``real'' (which means that the list of codes will now
contain NEW_CODE, but will not contain CODE).
code2XXX
routines. However, the XXX2code
routines will
still return the original code.
These will only work if CODE is actually an alias. If it is the ``real''
code, it will not be deleted. You will need to use the rename_XXX_code
function to switch the real code with one of the aliases, and then
delete the alias.
For example, ISO 3166 assigns one code to the country ``United States Minor Outlying Islands'', but the IANA codes give different codes to different islands (Baker Island, Howland Island, etc.).
This may cause some confusion... I've done the best that I could do to minimize it.
the Locale::Codes::Country manpage
the Locale::Codes::Language manpage
the Locale::Codes::Currency manpage
the Locale::Codes::Script manpage
the Locale::Codes::LangExt manpage
the Locale::Codes::LangVar manpage
the Locale::Codes::LangFam manpage
See Locale::Codes for full author history.
Currently maintained by Sullivan Beck (sbeck@cpan.org)
Copyright (c) 1997-2001 Canon Research Centre Europe (CRE). Copyright (c) 2001-2010 Neil Bowers Copyright (c) 2010-2015 Sullivan Beck
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Locale::Codes::API - a description of the callable function in each module |