App::Info::Lib::OSSPUUID(3pm) User Contributed Perl Documentation App::Info::Lib::OSSPUUID(3pm)
NAME
App::Info::Lib::OSSPUUID - Information about the OSSP UUID library
SYNOPSIS
use App::Info::Lib::OSSPUUID;
my $uuid = App::Info::Lib::OSSPUUID->new;
if ($uuid->installed) {
print "App name: ", $uuid->name, "
";
print "Version: ", $uuid->version, "
";
print "Bin dir: ", $uuid->bin_dir, "
";
} else {
print "Expat is not installed. :-(
";
}
DESCRIPTION
App::Info::Lib::OSSPUUID supplies information about the OSSP UUID 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 the OSSP UUID library) construct a new
App::Info::Lib::OSSPUUID 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 "Executing `uuid-config --version`" is documented for the methods "name()"
"version()", "major_version()", "minor_version()", and "patch_version()", rest assured that it will only be triggered once, by whichever of
those four methods is called first.
INTERFACE
Constructor
new
my $expat = App::Info::Lib::OSSPUUID->new(@params);
Returns an App::Info::Lib::OSSPUUID object. See App::Info for a complete description of argument parameters.
When called, "new()" searches all of the paths returned by the "search_lib_dirs()" method for one of the files returned by the
"search_lib_names()" method. If any of is found, then the OSSP UUID library is assumed to be installed. Otherwise, most of the object
methods will return "undef".
Events:
info
Looking for uuid-config
confirm
Path to uuid-config?
unknown
Path to uuid-config?
Class Method
key_name
my $key_name = App::Info::Lib::OSSPUUID->key_name;
Returns the unique key name that describes this class. The value returned is the string "OSSP UUID".
Object Methods
installed
print "UUID is ", ($uuid->installed ? '' : 'not '), "installed.
";
Returns true if the OSSP UUID library is installed, and false if it is not. App::Info::Lib::OSSPUUID determines whether the library is
installed based on the presence or absence on the file system of the "uuid-config" application, searched for when "new()" constructed the
object. If the OSSP UUID library does not appear to be installed, then most of the other object methods will return empty values.
name
my $name = $uuid->name;
Returns the name of the library. App::Info::Lib::OSSPUUID parses the name from the system call "`uuid-config --version`".
Events:
info
Executing `uuid-config --version`
error
Failed to find OSSP UUID version with `uuid-config --version`
Unable to parse name from string
Unable to parse version from string
Failed to parse OSSP UUID version parts from string
unknown
Enter a valid OSSP UUID version number
version
my $version = $uuid->version;
Returns the OSSP UUID version number. App::Info::Lib::OSSPUUID parses the version number from the system call "`uuid-config --version`".
Events:
info
Executing `uuid-config --version`
error
Failed to find OSSP UUID version with `uuid-config --version`
Unable to parse name from string
Unable to parse version from string
Failed to parse OSSP UUID version parts from string
unknown
Enter a valid OSSP UUID version number
major version
my $major_version = $uuid->major_version;
Returns the OSSP UUID library major version number. App::Info::Lib::OSSPUUID parses the major version number from the system call
"`uuid-config --version`". For example, if "version()" returns "1.3.0", then this method returns "1".
Events:
info
Executing `uuid-config --version`
error
Failed to find OSSP UUID version with `uuid-config --version`
Unable to parse name from string
Unable to parse version from string
Failed to parse OSSP UUID version parts from string
unknown
Enter a valid OSSP UUID major version number
minor version
my $minor_version = $uuid->minor_version;
Returns the OSSP UUID library minor version number. App::Info::Lib::OSSPUUID parses the minor version number from the system call
"`uuid-config --version`". For example, if "version()" returns "1.3.0", then this method returns "3".
Events:
info
Executing `uuid-config --version`
error
Failed to find OSSP UUID version with `uuid-config --version`
Unable to parse name from string
Unable to parse version from string
Failed to parse OSSP UUID version parts from string
unknown
Enter a valid OSSP UUID minor version number
patch version
my $patch_version = $uuid->patch_version;
Returns the OSSP UUID library patch version number. App::Info::Lib::OSSPUUID parses the patch version number from the system call
"`uuid-config --version`". For example, if "version()" returns "1.3.0", then this method returns "0".
Events:
info
Executing `uuid-config --version`
error
Failed to find OSSP UUID version with `uuid-config --version`
Unable to parse name from string
Unable to parse version from string
Failed to parse OSSP UUID version parts from string
unknown
Enter a valid OSSP UUID minor version number
executable
my $exe = $uuid->executable;
Returns the full path to the OSSP UUID executable, which is named uuid. This method does not use the executable names returned by
"search_exe_names()"; those executable names are used to search for uuid-config only (in "new()").
When it called, "executable()" checks for an executable named uuid in the directory returned by "bin_dir()".
Note that "executable()" is simply an alias for "uuid()".
Events:
info
Looking for uuid executable
confirm
Path to uuid executable?
unknown
Path to uuid executable?
bin_dir
my $bin_dir = $uuid->bin_dir;
Returns the OSSP UUID binary directory path. App::Info::Lib::OSSPUUID gathers the path from the system call "`uuid-config --bindir`".
Events:
info
Executing `uuid-config --bindir`
error
Cannot find bin directory
unknown
Enter a valid OSSP UUID bin directory
inc_dir
my $inc_dir = $uuid->inc_dir;
Returns the OSSP UUID include directory path. App::Info::Lib::OSSPUUID gathers the path from the system call "`uuid-config --includedir`".
Events:
info
Executing `uuid-config --includedir`
error
Cannot find include directory
unknown
Enter a valid OSSP UUID include directory
lib_dir
my $lib_dir = $uuid->lib_dir;
Returns the OSSP UUID library directory path. App::Info::Lib::OSSPUUID gathers the path from the system call "`uuid-config --libdir`".
Events:
info
Executing `uuid-config --libdir`
error
Cannot find library directory
unknown
Enter a valid OSSP UUID library directory
so_lib_dir
my $so_lib_dir = $uuid->so_lib_dir;
Returns the OSSP UUID shared object library directory path. This is actually just an alias for "lib_dir()".
Events:
info
Executing `uuid-config --libdir`
error
Cannot find library directory
unknown
Enter a valid OSSP UUID library directory
cflags
my $configure = $uuid->cflags;
Returns the C flags used when compiling the OSSP UUID library. App::Info::Lib::OSSPUUID gathers the configure data from the system call
"`uuid-config --cflags`".
Events:
info
Executing `uuid-config --configure`
error
Cannot find configure information
unknown
Enter OSSP UUID configuration options
ldflags
my $configure = $uuid->ldflags;
Returns the LD flags used when compiling the OSSP UUID library. App::Info::Lib::OSSPUUID gathers the configure data from the system call
"`uuid-config --ldflags`".
Events:
info
Executing `uuid-config --configure`
error
Cannot find configure information
unknown
Enter OSSP UUID configuration options
perl_module
my $bool = $uuid->perl_module;
Return true if "OSSP::uuid" is installed and can be loaded, and false if not. "OSSP::uuid" must be able to be loaded by the currently
running instance of the Perl interpreter.
Events:
info
Loading OSSP::uuid
home_url
my $home_url = $uuid->home_url;
Returns the OSSP UUID home page URL.
download_url
my $download_url = $uuid->download_url;
Returns the OSSP UUID download URL.
search_exe_names
my @search_exe_names = $app->search_exe_names;
Returns a list of possible names for uuid-config executable. By default, only uuid-config is returned (or uuid-config.exe on Win32).
Note that this method is not used to search for the OSSP UUID server executable, only uuid-config.
search_bin_dirs
my @search_bin_dirs = $app->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.
The list of directories by default consists of the path as defined by "File::Spec->path", as well as the following directories:
/usr/local/bin
/usr/local/sbin
/usr/bin
/usr/sbin
/bin
C:Program Filesuidin
Other Executable Methods
These methods function just like the "executable()" method, except that they return different executables. OSSP UUID comes with a fair
number of them; we provide these methods to provide a path to a subset of them. Each method, when called, checks for an executable in the
directory returned by "bin_dir()". The name of the executable must be one of the names returned by the corresponding "search_*_names"
method.
The available executable methods are:
uuid
uuid_config
And the corresponding search names methods are:
search_postgres_names
search_createdb_names
Events:
info
Looking for executable
confirm
Path to executable?
unknown
Path to executable?
BUGS
Please send bug reports to <bug-app-info@rt.cpan.org> or file them at <http://rt.cpan.org/NoAuth/Bugs.html?Dist=App-Info>.
AUTHOR
David Wheeler <david@justatheory.com>.
SEE ALSO
App::Info documents the event handling interface.
App::Info::Lib is the App::Info::Lib::Expat parent class.
OSSP::uuid is the Perl interface to the OSSP UUID library.
<http://www.ossp.org/pkg/lib/uuid/> is the OSSP UUID home page.
COPYRIGHT AND LICENSE
Copyright (c) 2002-2008, David Wheeler. Some Rights Reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2011-03-15 App::Info::Lib::OSSPUUID(3pm)