App::Info::Lib::Iconv(3) Information about libiconv

SYNOPSIS


use App::Info::Lib::Iconv;
my $iconv = App::Info::Lib::Iconv->new;
if ($iconv->installed) {
print "App name: ", $iconv->name, "\n";
print "Version: ", $iconv->version, "\n";
print "Bin dir: ", $iconv->bin_dir, "\n";
} else {
print "libiconv is not installed. :-(\n";
}

DESCRIPTION

App::Info::Lib::Iconv supplies information about the libiconv library installed on the local system. It implements all of the methods defined by App::Info::Lib. Methods that trigger events will trigger them only the first time they're called (See App::Info for documentation on handling events). To start over (after, say, someone has installed libiconv) construct a new App::Info::Lib::Iconv object to aggregate new meta data.

Some of the methods trigger the same events. This is due to cross-calling of shared subroutines. However, any one event should be triggered no more than once. For example, although the info event ``Searching for 'iconv.h''' is documented for the methods "version()", "major_version()", and "minor_version()", rest assured that it will only be triggered once, by whichever of those four methods is called first.

INTERFACE

Constructor

new

  my $iconv = App::Info::Lib::Iconv->new(@params);

Returns an App::Info::Lib::Iconv object. See App::Info for a complete description of argument parameters.

When called, "new()" searches the the list of directories returned by the "search_bin_dirs()" method for an executable file with a name returned by the "search_exe_names()" method. If the executable is found, libiconv will be assumed to be installed. Otherwise, most of the object methods will return "undef".

Events:

info
Searching for iconv
unknown
Path to iconv executable?
confirm
Path to iconv executable?

Class Method

key_name

  my $key_name = App::Info::Lib::Iconv->key_name;

Returns the unique key name that describes this class. The value returned is the string ``libiconv''.

Object Methods

installed

  print "libiconv is ", ($iconv->installed ? '' : 'not '),
    "installed.\n";

Returns true if libiconv is installed, and false if it is not. App::Info::Lib::Iconv determines whether libiconv is installed based on the presence or absence of the iconv application, as found when "new()" constructed the object. If libiconv does not appear to be installed, then most of the other object methods will return empty values.

name

  my $name = $iconv->name;

Returns the name of the application. In this case, "name()" simply returns the string ``libiconv''.

version

  my $version = $iconv->version;

Returns the full version number for libiconv. App::Info::Lib::Iconv attempts to parse the version number from the iconv.h file, if it exists.

Events:

info
Searching for 'iconv.h'

Searching for include directory

error
Cannot find include directory

Cannot find 'iconv.h'

Cannot parse version number from file 'iconv.h'

unknown
Enter a valid libiconv include directory

Enter a valid libiconv version number

major_version

  my $major_version = $iconv->major_version;

Returns the libiconv major version number. App::Info::Lib::Iconv attempts to parse the version number from the iconv.h file, if it exists. For example, if "version()" returns ``1.7'', then this method returns ``1''.

Events:

info
Searching for 'iconv.h'

Searching for include directory

error
Cannot find include directory

Cannot find 'iconv.h'

Cannot parse version number from file 'iconv.h'

unknown
Enter a valid libiconv include directory

Enter a valid libiconv version number

minor_version

  my $minor_version = $iconv->minor_version;

Returns the libiconv minor version number. App::Info::Lib::Iconv attempts to parse the version number from the iconv.h file, if it exists. For example, if "version()" returns ``1.7'', then this method returns ``7''.

Events:

info
Searching for 'iconv.h'

Searching for include directory

error
Cannot find include directory

Cannot find 'iconv.h'

Cannot parse version number from file 'iconv.h'

unknown
Enter a valid libiconv include directory

Enter a valid libiconv version number

patch_version

  my $patch_version = $iconv->patch_version;

Since libiconv has no patch number in its version number, this method will always return false.

executable

  my $executable = $iconv->executable;

Returns the path to the Iconv executable, which will be defined by one of the names returned by "search_exe_names()". The executable is searched for in "new()", so there are no events for this method.

bin_dir

  my $bin_dir = $iconv->bin_dir;

Returns the path of the directory in which the iconv application was found when the object was constructed by "new()".

Events:

info
Searching for bin directory
error
Cannot find bin directory
unknown
Enter a valid libiconv bin directory

inc_dir

  my $inc_dir = $iconv->inc_dir;

Returns the directory path in which the file iconv.h was found. App::Info::Lib::Iconv searches for iconv.h in the following directories:

/usr/local/include
/usr/include
/sw/include

Events:

info
Searching for include directory
error
Cannot find include directory
unknown
Enter a valid libiconv include directory

lib_dir

  my $lib_dir = $iconv->lib_dir;

Returns the directory path in which a libiconv library was found. The search looks for a file with a name returned by "search_lib_names()" in a directory returned by "search_lib_dirs()".

Events:

info
Searching for library directory
error
Cannot find library directory
unknown
Enter a valid libiconv library directory

so_lib_dir

  my $so_lib_dir = $iconv->so_lib_dir;

Returns the directory path in which a libiconv shared object library was found. The search looks for a file with a name returned by "search_so_lib_names()" in a directory returned by "search_lib_dirs()".

Returns the directory path in which a libiconv shared object library was found. App::Info::Lib::Iconv searches for these files:

<Events:>

info
Searching for shared object library directory
error
Cannot find shared object library directory
unknown
Enter a valid libiconv shared object library directory

home_url

  my $home_url = $iconv->home_url;

Returns the libiconv home page URL.

download_url

  my $download_url = $iconv->download_url;

Returns the libiconv download URL.

search_exe_names

  my @search_exe_names = $iconv->search_exe_names;

Returns a list of possible names for the Iconv executable. By default, the only name returned is iconv (iconv.exe on Win32).

search_bin_dirs

  my @search_bin_dirs = $iconv->search_bin_dirs;

Returns a list of possible directories in which to search an executable. Used by the "new()" constructor to find an executable to execute and collect application info. The found directory will also be returned by the "bin_dir" method. By default, the directories returned are those in your path, followed by these:

/usr/local/bin
/usr/bin
/bin
/sw/bin
/usr/local/sbin
/usr/sbin
/sbin
/sw/sbin

search_lib_names

  my @seach_lib_names = $self->search_lib_nams

Returns a list of possible names for library files. Used by "lib_dir()" to search for library files. By default, the list is:

libiconv3.a
libiconv3.la
libiconv3.so
libiconv3.so.0
libiconv3.so.0.0.1
libiconv3.dylib
libiconv3.0.dylib
libiconv3.0.0.1.dylib
libiconv.a
libiconv.la
libiconv.so
libiconv.so.0
libiconv.so.0.0.1
libiconv.dylib
libiconv.2.dylib
libiconv.2.0.4.dylib
libiconv.0.dylib
libiconv.0.0.1.dylib

search_so_lib_names

  my @seach_so_lib_names = $self->search_so_lib_nams

Returns a list of possible names for shared object library files. Used by "so_lib_dir()" to search for library files. By default, the list is:

libiconv3.so
libiconv3.so.0
libiconv3.so.0.0.1
libiconv3.dylib
libiconv3.0.dylib
libiconv3.0.0.1.dylib
libiconv.so
libiconv.so.0
libiconv.so.0.0.1
libiconv.dylib
libiconv.0.dylib
libiconv.0.0.1.dylib

search_lib_dirs

  my @search_lib_dirs = $iconv->search_lib_dirs;

Returns a list of possible directories in which to search for libraries. By default, it returns all of the paths in the "libsdirs" and "loclibpth" attributes defined by the Perl Config module --- plus /sw/lib (in support of all you Fink users out there).

search_inc_names

  my @search_inc_names = $iconv->search_inc_names;

Returns a list of include file names to search for. Used by "inc_dir()" to search for an include file. By default, the only name returned is iconv.h.

search_inc_dirs

  my @search_inc_dirs = $iconv->search_inc_dirs;

Returns a list of possible directories in which to search for include files. Used by "inc_dir()" to search for an include file. By default, the directories are:

/usr/local/include
/usr/include
/sw/include

KNOWN ISSUES

This is a pretty simple class. It's possible that there are more directories that ought to be searched for libraries and includes.

TO DO

Improve this class by borrowing code from Matt Seargent's AxKit Makefil.PL.

SUPPORT

This module is stored in an open GitHub repository <http://github.com/theory/app-info/>. Feel free to fork and contribute!

Please file bug reports via GitHub Issues <http://github.com/theory/app-info/issues/> or by sending mail to bu[email protected] <mailto:[email protected]>.

AUTHOR

David E. Wheeler <[email protected]> based on code by Sam Tregar <[email protected]>.

COPYRIGHT AND LICENSE

Copyright (c) 2002-2011, David E. Wheeler. Some Rights Reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.