find.t

source of perl for linux application,

#!./perl
use strict;
use Cwd;

my %Expect_File = (); # what we expect for $_ 
my %Expect_Name = (); # what we expect for $File::Find::name/fullname
my %Expect_Dir  = (); # what we expect for $File::Find::dir
my $symlink_exists = eval { symlink("",""); 1 };
my ($warn_msg, @files, $file);


BEGIN {
    require File::Spec;
    chdir 't' if -d 't';
    # May be doing dynamic loading while @INC is all relative
    unshift @INC => File::Spec->rel2abs('../lib');

    $SIG{'__WARN__'} = sub { $warn_msg = $_[0]; warn "# $_[0]"; }
}

if ( $symlink_exists ) { print "1..199\n"; }
else                   { print "1..85\n";  }

my $orig_dir = cwd();

# Uncomment this to see where File::Find is chdir'ing to.  Helpful for
# debugging its little jaunts around the filesystem.
# BEGIN {
#     use Cwd;
#     *CORE::GLOBAL::chdir = sub ($) { 
#         my($file, $line) = (caller)[1,2];
#
#         printf "# cwd:      %s\n", cwd();
#         print "# chdir: @_ from $file at $line\n";
#         my($return) = CORE::chdir($_[0]);
#         printf "# newcwd:   %s\n", cwd();
#
#         return $return;
#     };
# }


BEGIN {
    use File::Spec;
    if ($^O eq 'MSWin32' || $^O eq 'cygwin' || $^O eq 'VMS')
     {
      # This is a hack - at present File::Find does not produce native names on 
      # Win32 or VMS, so force File::Spec to use Unix names.
      # must be set *before* importing File::Find
      require File::Spec::Unix;
      @File::Spec::ISA = 'File::Spec::Unix';
     }
     require File::Find;
     import File::Find;
}

cleanup();

$::count_commonsense = 0;
find({wanted => sub { ++$::count_commonsense if $_ eq 'commonsense.t'; } },
   File::Spec->curdir);
if ($::count_commonsense == 1) {
  print "ok 1\n";
} else {
  print "not ok 1 # found $::count_commonsense files named 'commonsense.t'\n";
}

$::count_commonsense = 0;
finddepth({wanted => sub { ++$::count_commonsense if $_ eq 'commonsense.t'; } },
	File::Spec->curdir);
if ($::count_commonsense == 1) {
  print "ok 2\n";
} else {
  print "not ok 2 # found $::count_commonsense files named 'commonsense.t'\n";
}

my $case = 2;
my $FastFileTests_OK = 0;

sub cleanup {
    chdir($orig_dir);
    my $need_updir = 0;
    if (-d dir_path('for_find')) {
        $need_updir = 1 if chdir(dir_path('for_find'));
    }
    if (-d dir_path('fa')) {
	unlink file_path('fa', 'fa_ord'),
	       file_path('fa', 'fsl'),
	       file_path('fa', 'faa', 'faa_ord'),
	       file_path('fa', 'fab', 'fab_ord'),
	       file_path('fa', 'fab', 'faba', 'faba_ord'),
	       file_path('fb', 'fb_ord'),
	       file_path('fb', 'fba', 'fba_ord');
	rmdir dir_path('fa', 'faa');
	rmdir dir_path('fa', 'fab', 'faba');
	rmdir dir_path('fa', 'fab');
	rmdir dir_path('fa');
	rmdir dir_path('fb', 'fba');
	rmdir dir_path('fb');
    }
    if ($need_updir) {
        my $updir = $^O eq 'VMS' ? File::Spec::VMS->updir() : File::Spec->updir;
        chdir($updir);
    }
    if (-d dir_path('for_find')) {
	rmdir dir_path('for_find') or print "# Can't rmdir for_find: $!\n";
    }
}

END {
    cleanup();
}

sub Check($) {
    $case++;
    if ($_[0]) { print "ok $case\n"; }
    else       { print "not ok $case\n"; }
}

sub CheckDie($) {
    $case++;
    if ($_[0]) { print "ok $case\n"; }
    else { print "not ok $case\n $!\n"; exit 0; }
}

sub touch {
    CheckDie( open(my $T,'>',$_[0]) );
}

sub MkDir($$) {
    CheckDie( mkdir($_[0],$_[1]) );
}

sub wanted_File_Dir {
    printf "# \$File::Find::dir => '$File::Find::dir'\t\$_ => '$_'\n";
    s#\.$## if ($^O eq 'VMS' && $_ ne '.');
    s/(.dir)?$//i if ($^O eq 'VMS' && -d _);
    Check( $Expect_File{$_} );
    if ( $FastFileTests_OK ) {
        delete $Expect_File{ $_} 
          unless ( $Expect_Dir{$_} && ! -d _ );
    } else {
        delete $Expect_File{$_} 
          unless ( $Expect_Dir{$_} && ! -d $_ );
    }
}

sub wanted_File_Dir_prune {
    &wanted_File_Dir;
    $File::Find::prune=1 if  $_ eq 'faba';
}

sub wanted_Name {
    my $n = $File::Find::name;
    $n =~ s#\.$## if ($^O eq 'VMS' && $n ne '.');
    print "# \$File::Find::name => '$n'\n";
    my $i = rindex($n,'/');
    my $OK = exists($Expect_Name{$n});
    unless ($^O eq 'MacOS') {
        if ( $OK ) {
            $OK= exists($Expect_Name{substr($n,0,$i)})  if $i >= 0;    
        }
    }
    Check($OK);
    delete $Expect_Name{$n};
}

sub wanted_File {
    print "# \$_ => '$_'\n";
    s#\.$## if ($^O eq 'VMS' && $_ ne '.');
    my $i = rindex($_,'/');
    my $OK = exists($Expect_File{ $_});
    unless ($^O eq 'MacOS') {
        if ( $OK ) {
            $OK= exists($Expect_File{ substr($_,0,$i)})  if $i >= 0;
        }
    }
    Check($OK);
    delete $Expect_File{ $_};
}

sub simple_wanted {
    print "# \$File::Find::dir => '$File::Find::dir'\n";
    print "# \$_ => '$_'\n";
}

sub noop_wanted {}

sub my_preprocess {
    @files = @_;
    print "# --preprocess--\n";
    print "#   \$File::Find::dir => '$File::Find::dir' \n";
    foreach $file (@files) {
        $file =~ s/\.(dir)?$// if $^O eq 'VMS';
        print "#   $file \n";
        delete $Expect_Dir{ $File::Find::dir }->{$file};
    }
    print "# --end preprocess--\n";
    Check(scalar(keys %{$Expect_Dir{ $File::Find::dir }}) == 0);
    if (scalar(keys %{$Expect_Dir{ $File::Find::dir }}) == 0) {
        delete $Expect_Dir{ $File::Find::dir }
    }
    return @files;
}

sub my_postprocess {
    print "# postprocess: \$File::Find::dir => '$File::Find::dir' \n";
    delete $Expect_Dir{ $File::Find::dir};
}


# Use dir_path() to specify a directory path that's expected for
# $File::Find::dir (%Expect_Dir). Also use it in file operations like
# chdir, rmdir etc.
#
# dir_path() concatenates directory names to form a *relative*
# directory path, independent from the platform it's run on, although
# there are limitations. Don't try to create an absolute path,
# because that may fail on operating systems that have the concept of
# volume names (e.g. Mac OS). As a special case, you can pass it a "." 
# as first argument, to create a directory path like "./fa/dir" on
# operating systems other than Mac OS (actually, Mac OS will ignore
# the ".", if it's the first argument). If there's no second argument,
# this function will return the empty string on Mac OS and the string
# "./" otherwise.

sub dir_path {
    my $first_arg = shift @_;

    if ($first_arg eq '.') {
        if ($^O eq 'MacOS') {
            return '' unless @_;
            # ignore first argument; return a relative path
            # with leading ":" and with trailing ":"
            return File::Spec->catdir(@_); 
        } else { # other OS
            return './' unless @_;
            my $path = File::Spec->catdir(@_);
            # add leading "./"
            $path = "./$path";
            return $path;
        }

    } else { # $first_arg ne '.'
        return $first_arg unless @_; # return plain filename
        return File::Spec->catdir($first_arg, @_); # relative path
    }
}


# Use topdir() to specify a directory path that you want to pass to
# find/finddepth. Basically, topdir() does the same as dir_path() (see
# above), except that there's no trailing ":" on Mac OS.

sub topdir {
    my $path = dir_path(@_);
    $path =~ s/:$// if ($^O eq 'MacOS');
    return $path;
}


# Use file_path() to specify a file path that's expected for $_
# (%Expect_File). Also suitable for file operations like unlink etc.
#
# file_path() concatenates directory names (if any) and a filename to
# form a *relative* file path (the last argument is assumed to be a
# file). It's independent from the platform it's run on, although
# there are limitations. As a special case, you can pass it a "." as 
# first argument, to create a file path like "./fa/file" on operating 
# systems other than Mac OS (actually, Mac OS will ignore the ".", if 
# it's the first argument). If there's no second argument, this 
# function will return the empty string on Mac OS and the string "./" 
# otherwise.

sub file_path {
    my $first_arg = shift @_;

    if ($first_arg eq '.') {
        if ($^O eq 'MacOS') {
            return '' unless @_;
            # ignore first argument; return a relative path  
            # with leading ":", but without trailing ":"
            return File::Spec->catfile(@_); 
        } else { # other OS
            return './' unless @_;
            my $path = File::Spec->catfile(@_);
            # add leading "./" 
            $path = "./$path"; 
            return $path;
        }

    } else { # $first_arg ne '.'
        return $first_arg unless @_; # return plain filename
        return File::Spec->catfile($first_arg, @_); # relative path
    }
}


# Use file_path_name() to specify a file path that's expected for
# $File::Find::Name (%Expect_Name). Note: When the no_chdir => 1
# option is in effect, $_ is the same as $File::Find::Name. In that
# case, also use this function to specify a file path that's expected
# for $_.
#
# Basically, file_path_name() does the same as file_path() (see
# above), except that there's always a leading ":" on Mac OS, even for
# plain file/directory names.

sub file_path_name {
    my $path = file_path(@_);
    $path = ":$path" if (($^O eq 'MacOS') && ($path !~ /:/));
    return $path;
}



MkDir( dir_path('for_find'), 0770 );
CheckDie(chdir( dir_path('for_find')));
MkDir( dir_path('fa'), 0770 );
MkDir( dir_path('fb'), 0770  );
touch( file_path('fb', 'fb_ord') );
MkDir( dir_path('fb', 'fba'), 0770  );
touch( file_path('fb', 'fba', 'fba_ord') );
if ($^O eq 'MacOS') {
      CheckDie( symlink(':fb',':fa:fsl') ) if $symlink_exists;
} else {
      CheckDie( symlink('../fb','fa/fsl') ) if $symlink_exists;
}
touch( file_path('fa', 'fa_ord') );

MkDir( dir_path('fa', 'faa'), 0770  );
touch( file_path('fa', 'faa', 'faa_ord') );
MkDir( dir_path('fa', 'fab'), 0770  );
touch( file_path('fa', 'fab', 'fab_ord') );
MkDir( dir_path('fa', 'fab', 'faba'), 0770  );
touch( file_path('fa', 'fab', 'faba', 'faba_ord') );


%Expect_File = (File::Spec->curdir => 1, file_path('fsl') => 1,
                file_path('fa_ord') => 1, file_path('fab') => 1,
                file_path('fab_ord') => 1, file_path('faba') => 1,
                file_path('faa') => 1, file_path('faa_ord') => 1);

delete $Expect_File{ file_path('fsl') } unless $symlink_exists;
%Expect_Name = ();

%Expect_Dir = ( dir_path('fa') => 1, dir_path('faa') => 1,
                dir_path('fab') => 1, dir_path('faba') => 1,
                dir_path('fb') => 1, dir_path('fba') => 1);

delete @Expect_Dir{ dir_path('fb'), dir_path('fba') } unless $symlink_exists;
File::Find::find( {wanted => \&wanted_File_Dir_prune}, topdir('fa') ); 
Check( scalar(keys %Expect_File) == 0 );


print "# check re-entrancy\n";

%Expect_File = (File::Spec->curdir => 1, file_path('fsl') => 1,
                file_path('fa_ord') => 1, file_path('fab') => 1,
                file_path('fab_ord') => 1, file_path('faba') => 1,
                file_path('faa') => 1, file_path('faa_ord') => 1);

delete $Expect_File{ file_path('fsl') } unless $symlink_exists;
%Expect_Name = ();

%Expect_Dir = ( dir_path('fa') => 1, dir_path('faa') => 1,
                dir_path('fab') => 1, dir_path('faba') => 1,
                dir_path('fb') => 1, dir_path('fba') => 1);

delete @Expect_Dir{ dir_path('fb'), dir_path('fba') } unless $symlink_exists;

File::Find::find( {wanted => sub { wanted_File_Dir_prune();
                                    File::Find::find( {wanted => sub
                                    {} }, File::Spec->curdir ); } },
                                    topdir('fa') );

Check( scalar(keys %Expect_File) == 0 ); 


# no_chdir is in effect, hence we use file_path_name to specify the expected paths for %Expect_File

%Expect_File = (file_path_name('fa') => 1,
		file_path_name('fa', 'fsl') => 1,
                file_path_name('fa', 'fa_ord') => 1,
                file_path_name('fa', 'fab') => 1,
		file_path_name('fa', 'fab', 'fab_ord') => 1,
		file_path_name('fa', 'fab', 'faba') => 1,
		file_path_name('fa', 'fab', 'faba', 'faba_ord') => 1,
		file_path_name('fa', 'faa') => 1,
                file_path_name('fa', 'faa', 'faa_ord') => 1,);

delete $Expect_File{ file_path_name('fa', 'fsl') } unless $symlink_exists;
%Expect_Name = ();

%Expect_Dir = (dir_path('fa') => 1,
	       dir_path('fa', 'faa') => 1,
               dir_path('fa', 'fab') => 1,
	       dir_path('fa', 'fab', 'faba') => 1,
	       dir_path('fb') => 1,
	       dir_path('fb', 'fba') => 1);

delete @Expect_Dir{ dir_path('fb'), dir_path('fb', 'fba') }
    unless $symlink_exists;

File::Find::find( {wanted => \&wanted_File_Dir, no_chdir => 1},
		  topdir('fa') ); Check( scalar(keys %Expect_File) == 0 );


%Expect_File = ();

%Expect_Name = (File::Spec->curdir => 1,
		file_path_name('.', 'fa') => 1,
                file_path_name('.', 'fa', 'fsl') => 1,
                file_path_name('.', 'fa', 'fa_ord') => 1,
                file_path_name('.', 'fa', 'fab') => 1,
                file_path_name('.', 'fa', 'fab', 'fab_ord') => 1,
                file_path_name('.', 'fa', 'fab', 'faba') => 1,