#!perl
use strict;
use Test::More 0.94;
# Include a cut-down version of YAML::Tiny so we don't introduce unnecessary
# dependencies ourselves.
use strict;
use Carp 'croak';
# UTF Support?
sub HAVE_UTF8 () { $] >= 5.007003 }
BEGIN {
if ( HAVE_UTF8 ) {
# The string eval helps hide this from Test::MinimumVersion
eval "require utf8;";
die "Failed to load UTF-8 support" if $@;
}
# Class structure
require 5.004;
$YAML::Tiny::VERSION = '1.40';
# Error storage
$YAML::Tiny::errstr = '';
}
# Printable characters for escapes
my %UNESCAPES = (
z => "\x00", a => "\x07", t => "\x09",
n => "\x0a", v => "\x0b", f => "\x0c",
r => "\x0d", e => "\x1b", '\\' => '\\',
);
#####################################################################
# Implementation
# Create an empty YAML::Tiny object
sub new {
my $class = shift;
bless [ @_ ], $class;
}
# Create an object from a file
sub read {
my $class = ref $_[0] ? ref shift : shift;
# Check the file
my $file = shift or return $class->_error( 'You did not specify a file name' );
return $class->_error( "File '$file' does not exist" ) unless -e $file;
return $class->_error( "'$file' is a directory, not a file" ) unless -f _;
return $class->_error( "Insufficient permissions to read '$file'" ) unless -r _;
# Slurp in the file
local $/ = undef;
local *CFG;
unless ( open(CFG, $file) ) {
return $class->_error("Failed to open file '$file': $!");
}
my $contents = <CFG>;
unless ( close(CFG) ) {
return $class->_error("Failed to close file '$file': $!");
}
$class->read_string( $contents );
}
# Create an object from a string
sub read_string {
my $class = ref $_[0] ? ref shift : shift;
my $self = bless [], $class;
my $string = $_[0];
unless ( defined $string ) {
return $self->_error("Did not provide a string to load");
}
# Byte order marks
# NOTE: Keeping this here to educate maintainers
# my %BOM = (
# "\357\273\277" => 'UTF-8',
# "\376\377" => 'UTF-16BE',
# "\377\376" => 'UTF-16LE',
# "\377\376\0\0" => 'UTF-32LE'
# "\0\0\376\377" => 'UTF-32BE',
# );
if ( $string =~ /^(?:\376\377|\377\376|\377\376\0\0|\0\0\376\377)/ ) {
return $self->_error("Stream has a non UTF-8 BOM");
} else {
# Strip UTF-8 bom if found, we'll just ignore it
$string =~ s/^\357\273\277//;
}
# Try to decode as utf8
utf8::decode($string) if HAVE_UTF8;
# Check for some special cases
return $self unless length $string;
unless ( $string =~ /[\012\015]+\z/ ) {
return $self->_error("Stream does not end with newline character");
}
# Split the file into lines
my @lines = grep { ! /^\s*(?:\#.*)?\z/ }
split /(?:\015{1,2}\012|\015|\012)/, $string;
# Strip the initial YAML header
@lines and $lines[0] =~ /^\%YAML[: ][\d\.]+.*\z/ and shift @lines;
# A nibbling parser
while ( @lines ) {
# Do we have a document header?
if ( $lines[0] =~ /^---\s*(?:(.+)\s*)?\z/ ) {
# Handle scalar documents
shift @lines;
if ( defined $1 and $1 !~ /^(?:\#.+|\%YAML[: ][\d\.]+)\z/ ) {
push @$self, $self->_read_scalar( "$1", [ undef ], \@lines );
next;
}
}
if ( ! @lines or $lines[0] =~ /^(?:---|\.\.\.)/ ) {
# A naked document
push @$self, undef;
while ( @lines and $lines[0] !~ /^---/ ) {
shift @lines;
}
} elsif ( $lines[0] =~ /^\s*\-/ ) {
# An array at the root
my $document = [ ];
push @$self, $document;
$self->_read_array( $document, [ 0 ], \@lines );
} elsif ( $lines[0] =~ /^(\s*)\S/ ) {
# A hash at the root
my $document = { };
push @$self, $document;
$self->_read_hash( $document, [ length($1) ], \@lines );
} else {
croak("YAML::Tiny failed to classify the line '$lines[0]'");
}
}
$self;
}
# Deparse a scalar string to the actual scalar
sub _read_scalar {
my ($self, $string, $indent, $lines) = @_;
# Trim trailing whitespace
$string =~ s/\s*\z//;
# Explitic null/undef
return undef if $string eq '~';
# Quotes
if ( $string =~ /^\'(.*?)\'\z/ ) {
return '' unless defined $1;
$string = $1;
$string =~ s/\'\'/\'/g;
return $string;
}
if ( $string =~ /^\"((?:\\.|[^\"])*)\"\z/ ) {
# Reusing the variable is a little ugly,
# but avoids a new variable and a string copy.
$string = $1;
$string =~ s/\\"/"/g;
$string =~ s/\\([never\\fartz]|x([0-9a-fA-F]{2}))/(length($1)>1)?pack("H2",$2):$UNESCAPES{$1}/gex;
return $string;
}
# Special cases
if ( $string =~ /^[\'\"!&]/ ) {
croak("YAML::Tiny does not support a feature in line '$lines->[0]'");
}
return {} if $string eq '{}';
return [] if $string eq '[]';
# Regular unquoted string
return $string unless $string =~ /^[>|]/;
# Error
croak("YAML::Tiny failed to find multi-line scalar content") unless @$lines;
# Check the indent depth
$lines->[0] =~ /^(\s*)/;
$indent->[-1] = length("$1");
if ( defined $indent->[-2] and $indent->[-1] <= $indent->[-2] ) {
croak("YAML::Tiny found bad indenting in line '$lines->[0]'");
}
# Pull the lines
my @multiline = ();
while ( @$lines ) {
$lines->[0] =~ /^(\s*)/;
last unless length($1) >= $indent->[-1];
push @multiline, substr(shift(@$lines), length($1));
}
my $j = (substr($string, 0, 1) eq '>') ? ' ' : "\n";
my $t = (substr($string, 1, 1) eq '-') ? '' : "\n";
return join( $j, @multiline ) . $t;
}
# Parse an array
sub _read_array {
my ($self, $array, $indent, $lines) = @_;
while ( @$lines ) {
# Check for a new document
if ( $lines->[0] =~ /^(?:---|\.\.\.)/ ) {
while ( @$lines and $lines->[0] !~ /^---/ ) {
shift @$lines;
}
return 1;
}
# Check the indent level
$lines->[0] =~ /^(\s*)/;
if ( length($1) < $indent->[-1] ) {
return 1;
} elsif ( length($1) > $indent->[-1] ) {
croak("YAML::Tiny found bad indenting in line '$lines->[0]'");
}
if ( $lines->[0] =~ /^(\s*\-\s+)[^\'\"]\S*\s*:(?:\s+|$)/ ) {
# Inline nested hash
my $indent2 = length("$1");
$lines->[0] =~ s/-/ /;
push @$array, { };
$self->_read_hash( $array->[-1], [ @$indent, $indent2 ], $lines );
} elsif ( $lines->[0] =~ /^\s*\-(\s*)(.+?)\s*\z/ ) {
# Array entry with a value
shift @$lines;
push @$array, $self->_read_scalar( "$2", [ @$indent, undef ], $lines );
} elsif ( $lines->[0] =~ /^\s*\-\s*\z/ ) {
shift @$lines;
unless ( @$lines ) {
push @$array, undef;
return 1;
}
if ( $lines->[0] =~ /^(\s*)\-/ ) {
my $indent2 = length("$1");
if ( $indent->[-1] == $indent2 ) {
# Null array entry
push @$array, undef;
} else {
# Naked indenter
push @$array, [ ];
$self->_read_array( $array->[-1], [ @$indent, $indent2 ], $lines );
}
} elsif ( $lines->[0] =~ /^(\s*)\S/ ) {
push @$array, { };
$self->_read_hash( $array->[-1], [ @$indent, length("$1") ], $lines );
} else {
croak("YAML::Tiny failed to classify line '$lines->[0]'");
}
} elsif ( defined $indent->[-2] and $indent->[-1] == $indent->[-2] ) {
# This is probably a structure like the following...
# ---
# foo:
# - list
# bar: value
#
# ... so lets return and let the hash parser handle it
return 1;
} else {
croak("YAML::Tiny failed to classify line '$lines->[0]'");
}
}
return 1;
}
# Parse an array
sub _read_hash {
my ($self, $hash, $indent, $lines) = @_;
while ( @$lines ) {
# Check for a new document
if ( $lines->[0] =~ /^(?:---|\.\.\.)/ ) {
while ( @$lines and $lines->[0] !~ /^---/ ) {
shift @$lines;
}
return 1;
}
# Check the indent level
$lines->[0] =~ /^(\s*)/;
if ( length($1) < $indent->[-1] ) {
return 1;
} elsif ( length($1) > $indent->[-1] ) {
croak("YAML::Tiny found bad indenting in line '$lines->[0]'");
}
# Get the key
unless ( $lines->[0] =~ s/^\s*([^\'\" ][^\n]*?)\s*:(\s+|$)// ) {
if ( $lines->[0] =~ /^\s*[?\'\"]/ ) {
croak("YAML::Tiny does not support a feature in line '$lines->[0]'");
}
croak("YAML::Tiny failed to classify line '$lines->[0]'");
}
my $key = $1;
# Do we have a value?
if ( length $lines->[0] ) {
# Yes
$hash->{$key} = $self->_read_scalar( shift(@$lines), [ @$indent, undef ], $lines );
} else {
# An indent
shift @$lines;
unless ( @$lines ) {
$hash->{$key} = undef;
return 1;
}
if ( $lines->[0] =~ /^(\s*)-/ ) {
$hash->{$key} = [];
$self->_read_array( $hash->{$key}, [ @$indent, length($1) ], $lines );
} elsif ( $lines->[0] =~ /^(\s*)./ ) {
my $indent2 = length("$1");
if ( $indent->[-1] >= $indent2 ) {
# Null hash entry
$hash->{$key} = undef;
} else {
$hash->{$key} = {};
$self->_read_hash( $hash->{$key}, [ @$indent, length($1) ], $lines );
}
}
}
}
return 1;
}
# Set error
sub _error {
$YAML::Tiny::errstr = $_[1];
undef;
}
# Retrieve error
sub errstr {
$YAML::Tiny::errstr;
}
#####################################################################
# Use Scalar::Util if possible, otherwise emulate it
BEGIN {
eval {
require Scalar::Util;
};
if ( $@ ) {
# Failed to load Scalar::Util
eval <<'END_PERL';
sub refaddr {
my $pkg = ref($_[0]) or return undef;
if (!!UNIVERSAL::can($_[0], 'can')) {
bless $_[0], 'Scalar::Util::Fake';
} else {
$pkg = undef;
}
"$_[0]" =~ /0x(\w+)/;
my $i = do { local $^W; hex $1 };
bless $_[0], $pkg if defined $pkg;
$i;
}
END_PERL
} else {
Scalar::Util->import('refaddr');
}
}
#####################################################################
# main test
#####################################################################
package main;
BEGIN {
# Skip modules that either don't want to be loaded directly, such as
# Module::Install, or that mess with the test count, such as the Test::*
# modules listed here.
#
# Moose::Role conflicts if Moose is loaded as well, but Moose::Role is in
# the Moose distribution and it's certain that someone who uses
# Moose::Role also uses Moose somewhere, so if we disallow Moose::Role,
# we'll still get the relevant version number.
my %skip = map { $_ => 1 } qw(
App::FatPacker
Class::Accessor::Classy
Devel::Cover
Module::Install
Moose::Role
POE::Loop::Tk
Template::Test
Test::Kwalitee
Test::Pod::Coverage
Test::Portability::Files
Test::YAML::Meta
);
my $Test = Test::Builder->new;
$Test->plan(skip_all => "META.yml could not be found")
unless -f 'META.yml' and -r _;
my $meta = (Local::YAML::Tiny->read('META.yml'))->[0];
my %requires;
for my $require_key (grep { /requires/ } keys %$meta) {
my %h = %{ $meta->{$require_key} };
$requires{$_}++ for keys %h;
}
delete $requires{perl};
diag("Testing with Perl $], $^X");
for my $module (sort keys %requires) {
if ($skip{$module}) {
note "$module doesn't want to be loaded directly, skipping";
next;
}
local $SIG{__WARN__} = sub { note "$module: $_[0]" };
use_ok $module or BAIL_OUT("can't load $module");
my $version = $module->VERSION;
$version = 'undefined' unless defined $version;
diag(" $module version is $version");
}
done_testing;
}