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App::Info::Lib::OSSPUUID(3) User Contributed Perl Documentation App::Info::Lib::OSSPUUID(3)

App::Info::Lib::OSSPUUID - Information about the OSSP UUID library

  use App::Info::Lib::OSSPUUID;

  my $uuid = App::Info::Lib::OSSPUUID->new;

  if ($uuid->installed) {
      print "App name: ", $uuid->name, "\n";
      print "Version:  ", $uuid->version, "\n";
      print "Bin dir:  ", $uuid->bin_dir, "\n";
  } else {
      print "Expat is not installed. :-(\n";
  }

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.

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?

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".

installed

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

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 Files\uid\bin

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?

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 bug-App-Info@rt.cpan.org <mailto:bug-App-Info@rt.cpan.org>.

David E. Wheeler <david@justatheory.com>.

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 (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.

2022-04-09 perl v5.32.1

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