TAP::Parser::Source

Section: Perl Programmers Reference Guide (3perl)
Updated: 2019-04-20
Page Index

NAME

TAP::Parser::Source - a TAP source & meta data about it

VERSION

Version 3.42

SYNOPSIS

  use TAP::Parser::Source;
  my $source = TAP::Parser::Source->new;
  $source->raw( \'reference to raw TAP source' )
         ->config( \%config )
         ->merge( $boolean )
         ->switches( \@switches )
         ->test_args( \@args )
         ->assemble_meta;

  do { ... } if $source->meta->{is_file};
  # see assemble_meta for a full list of data available

DESCRIPTION

A TAP source is something that produces a stream of TAP for the parser to consume, such as an executable file, a text file, an archive, an IO handle, a database, etc. "TAP::Parser::Source"s encapsulate these raw sources, and provide some useful meta data about them. They are used by TAP::Parser::SourceHandlers, which do whatever is required to produce & capture a stream of TAP from the raw source, and package it up in a TAP::Parser::Iterator for the parser to consume.

Unless you're writing a new TAP::Parser::SourceHandler, a plugin or subclassing TAP::Parser, you probably won't need to use this module directly.

METHODS

Class Methods

"new"

 my $source = TAP::Parser::Source->new;

Returns a new "TAP::Parser::Source" object.

Instance Methods

"raw"

  my $raw = $source->raw;
  $source->raw( $some_value );

Chaining getter/setter for the raw TAP source. This is a reference, as it may contain large amounts of data (eg: raw TAP).

"meta"

  my $meta = $source->meta;
  $source->meta({ %some_value });

Chaining getter/setter for meta data about the source. This defaults to an empty hashref. See ``assemble_meta'' for more info.

"has_meta"

True if the source has meta data.

"config"

  my $config = $source->config;
  $source->config({ %some_value });

Chaining getter/setter for the source's configuration, if any has been provided by the user. How it's used is up to you. This defaults to an empty hashref. See ``config_for'' for more info.

"merge"

  my $merge = $source->merge;
  $source->config( $bool );

Chaining getter/setter for the flag that dictates whether STDOUT and STDERR should be merged (where appropriate). Defaults to undef.

"switches"

  my $switches = $source->switches;
  $source->config([ @switches ]);

Chaining getter/setter for the list of command-line switches that should be passed to the source (where appropriate). Defaults to undef.

"test_args"

  my $test_args = $source->test_args;
  $source->config([ @test_args ]);

Chaining getter/setter for the list of command-line arguments that should be passed to the source (where appropriate). Defaults to undef.

"assemble_meta"

  my $meta = $source->assemble_meta;

Gathers meta data about the ``raw'' source, stashes it in ``meta'' and returns it as a hashref. This is done so that the TAP::Parser::SourceHandlers don't have to repeat common checks. Currently this includes:

    is_scalar => $bool,
    is_hash   => $bool,
    is_array  => $bool,

    # for scalars:
    length => $n
    has_newlines => $bool

    # only done if the scalar looks like a filename
    is_file => $bool,
    is_dir  => $bool,
    is_symlink => $bool,
    file => {
        # only done if the scalar looks like a filename
        basename => $string, # including ext
        dir      => $string,
        ext      => $string,
        lc_ext   => $string,
        # system checks
        exists  => $bool,
        stat    => [ ... ], # perldoc -f stat
        empty   => $bool,
        size    => $n,
        text    => $bool,
        binary  => $bool,
        read    => $bool,
        write   => $bool,
        execute => $bool,
        setuid  => $bool,
        setgid  => $bool,
        sticky  => $bool,
        is_file => $bool,
        is_dir  => $bool,
        is_symlink => $bool,
        # only done if the file's a symlink
        lstat      => [ ... ], # perldoc -f lstat
        # only done if the file's a readable text file
        shebang => $first_line,
    }

  # for arrays:
  size => $n,

"shebang"

Get the shebang line for a script file.

  my $shebang = TAP::Parser::Source->shebang( $some_script );

May be called as a class method

"config_for"

  my $config = $source->config_for( $class );

Returns ``config'' for the $class given. Class names may be fully qualified or abbreviated, eg:

  # these are equivalent
  $source->config_for( 'Perl' );
  $source->config_for( 'TAP::Parser::SourceHandler::Perl' );

If a fully qualified $class is given, its abbreviated version is checked first.

AUTHORS

Steve Purkis.