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Manifest.pm
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package ExtUtils::Manifest;
require Exporter;
use Config;
use File::Find;
use File::Copy 'copy';
use File::Spec;
use Carp;
use strict;
use vars qw($VERSION @ISA @EXPORT_OK
$Is_MacOS $Is_VMS
$Debug $Verbose $Quiet $MANIFEST $DEFAULT_MSKIP);
$VERSION = 1.42;
@ISA=('Exporter');
@EXPORT_OK = qw(mkmanifest
manicheck filecheck fullcheck skipcheck
manifind maniread manicopy maniadd
);
$Is_MacOS = $^O eq 'MacOS';
$Is_VMS = $^O eq 'VMS';
require VMS::Filespec if $Is_VMS;
$Debug = $ENV{PERL_MM_MANIFEST_DEBUG} || 0;
$Verbose = defined $ENV{PERL_MM_MANIFEST_VERBOSE} ?
$ENV{PERL_MM_MANIFEST_VERBOSE} : 1;
$Quiet = 0;
$MANIFEST = 'MANIFEST';
my $Filename = __FILE__;
$DEFAULT_MSKIP = (File::Spec->splitpath($Filename))[1].
"$MANIFEST.SKIP";
=head1 NAME
ExtUtils::Manifest - utilities to write and check a MANIFEST file
=head1 SYNOPSIS
use ExtUtils::Manifest qw(...funcs to import...);
mkmanifest();
my @missing_files = manicheck;
my @skipped = skipcheck;
my @extra_files = filecheck;
my($missing, $extra) = fullcheck;
my $found = manifind();
my $manifest = maniread();
manicopy($read,$target);
maniadd({$file => $comment, ...});
=head1 DESCRIPTION
=head2 Functions
ExtUtils::Manifest exports no functions by default. The following are
exported on request
=over 4
=item mkmanifest
mkmanifest();
Writes all files in and below the current directory to your F<MANIFEST>.
It works similar to
find . > MANIFEST
All files that match any regular expression in a file F<MANIFEST.SKIP>
(if it exists) are ignored.
Any existing F<MANIFEST> file will be saved as F<MANIFEST.bak>. Lines
from the old F<MANIFEST> file is preserved, including any comments
that are found in the existing F<MANIFEST> file in the new one.
=cut
sub _sort {
return sort { lc $a cmp lc $b } @_;
}
sub mkmanifest {
my $manimiss = 0;
my $read = (-r 'MANIFEST' && maniread()) or $manimiss++;
$read = {} if $manimiss;
local *M;
rename $MANIFEST, "$MANIFEST.bak" unless $manimiss;
open M, ">$MANIFEST" or die "Could not open $MANIFEST: $!";
my $skip = _maniskip();
my $found = manifind();
my($key,$val,$file,%all);
%all = (%$found, %$read);
$all{$MANIFEST} = ($Is_VMS ? "$MANIFEST\t\t" : '') . 'This list of files'
if $manimiss; # add new MANIFEST to known file list
foreach $file (_sort keys %all) {
if ($skip->($file)) {
# Policy: only remove files if they're listed in MANIFEST.SKIP.
# Don't remove files just because they don't exist.
warn "Removed from $MANIFEST: $file\n" if $Verbose and exists $read->{$file};
next;
}
if ($Verbose){
warn "Added to $MANIFEST: $file\n" unless exists $read->{$file};
}
my $text = $all{$file};
($file,$text) = split(/\s+/,$text,2) if $Is_VMS && $text;
$file = _unmacify($file);
my $tabs = (5 - (length($file)+1)/8);
$tabs = 1 if $tabs < 1;
$tabs = 0 unless $text;
print M $file, "\t" x $tabs, $text, "\n";
}
close M;
}
# Geez, shouldn't this use File::Spec or File::Basename or something?
# Why so careful about dependencies?
sub clean_up_filename {
my $filename = shift;
$filename =~ s|^\./||;
$filename =~ s/^:([^:]+)$/$1/ if $Is_MacOS;
return $filename;
}
=item manifind
my $found = manifind();
returns a hash reference. The keys of the hash are the files found
below the current directory.
=cut
sub manifind {
my $p = shift || {};
my $found = {};
my $wanted = sub {
my $name = clean_up_filename($File::Find::name);
warn "Debug: diskfile $name\n" if $Debug;
return if -d $_;
if( $Is_VMS ) {
$name =~ s#(.*)\.$#\L$1#;
$name = uc($name) if $name =~ /^MANIFEST(\.SKIP)?$/i;
}
$found->{$name} = "";
};
# We have to use "$File::Find::dir/$_" in preprocess, because
# $File::Find::name is unavailable.
# Also, it's okay to use / here, because MANIFEST files use Unix-style
# paths.
find({wanted => $wanted},
$Is_MacOS ? ":" : ".");
return $found;
}
=item manicheck
my @missing_files = manicheck();
checks if all the files within a C<MANIFEST> in the current directory
really do exist. If C<MANIFEST> and the tree below the current
directory are in sync it silently returns an empty list.
Otherwise it returns a list of files which are listed in the
C<MANIFEST> but missing from the directory, and by default also
outputs these names to STDERR.
=cut
sub manicheck {
return _check_files();
}
=item filecheck
my @extra_files = filecheck();
finds files below the current directory that are not mentioned in the
C<MANIFEST> file. An optional file C<MANIFEST.SKIP> will be
consulted. Any file matching a regular expression in such a file will
not be reported as missing in the C<MANIFEST> file. The list of any
extraneous files found is returned, and by default also reported to
STDERR.
=cut
sub filecheck {
return _check_manifest();
}
=item fullcheck
my($missing, $extra) = fullcheck();
does both a manicheck() and a filecheck(), returning then as two array
refs.
=cut
sub fullcheck {
return [_check_files()], [_check_manifest()];
}
=item skipcheck
my @skipped = skipcheck();
lists all the files that are skipped due to your C<MANIFEST.SKIP>
file.
=cut
sub skipcheck {
my($p) = @_;
my $found = manifind();
my $matches = _maniskip();
my @skipped = ();
foreach my $file (_sort keys %$found){
if (&$matches($file)){
warn "Skipping $file\n";
push @skipped, $file;
next;
}
}
return @skipped;
}
sub _check_files {
my $p = shift;
my $dosnames=(defined(&Dos::UseLFN) && Dos::UseLFN()==0);
my $read = maniread() || {};
my $found = manifind($p);
my(@missfile) = ();
foreach my $file (_sort keys %$read){
warn "Debug: manicheck checking from $MANIFEST $file\n" if $Debug;
if ($dosnames){
$file = lc $file;
$file =~ s=(\.(\w|-)+)=substr ($1,0,4)=ge;
$file =~ s=((\w|-)+)=substr ($1,0,8)=ge;
}
unless ( exists $found->{$file} ) {
warn "No such file: $file\n" unless $Quiet;
push @missfile, $file;
}
}
return @missfile;
}
sub _check_manifest {
my($p) = @_;
my $read = maniread() || {};
my $found = manifind($p);
my $skip = _maniskip();
my @missentry = ();
foreach my $file (_sort keys %$found){
next if $skip->($file);
warn "Debug: manicheck checking from disk $file\n" if $Debug;
unless ( exists $read->{$file} ) {
my $canon = $Is_MacOS ? "\t" . _unmacify($file) : '';
warn "Not in $MANIFEST: $file$canon\n" unless $Quiet;
push @missentry, $file;
}
}
return @missentry;
}
=item maniread
my $manifest = maniread();
my $manifest = maniread($manifest_file);
reads a named C<MANIFEST> file (defaults to C<MANIFEST> in the current
directory) and returns a HASH reference with files being the keys and
comments being the values of the HASH. Blank lines and lines which
start with C<#> in the C<MANIFEST> file are discarded.
=cut
sub maniread {
my ($mfile) = @_;
$mfile ||= $MANIFEST;
my $read = {};
local *M;
unless (open M, $mfile){
warn "$mfile: $!";
return $read;
}
local $_;
while (<M>){
chomp;
next if /^\s*#/;
my($file, $comment) = /^(\S+)\s*(.*)/;
next unless $file;
if ($Is_MacOS) {
$file = _macify($file);
$file =~ s/\\([0-3][0-7][0-7])/sprintf("%c", oct($1))/ge;
}
elsif ($Is_VMS) {
require File::Basename;
my($base,$dir) = File::Basename::fileparse($file);
# Resolve illegal file specifications in the same way as tar
$dir =~ tr/./_/;
my(@pieces) = split(/\./,$base);
if (@pieces > 2) { $base = shift(@pieces) . '.' . join('_',@pieces); }
my $okfile = "$dir$base";
warn "Debug: Illegal name $file changed to $okfile\n" if $Debug;
$file = $okfile;
$file = lc($file) unless $file =~ /^MANIFEST(\.SKIP)?$/;
}
$read->{$file} = $comment;
}
close M;
$read;
}
# returns an anonymous sub that decides if an argument matches
sub _maniskip {
my @skip ;
my $mfile = "$MANIFEST.SKIP";
local(*M,$_);
open M, $mfile or open M, $DEFAULT_MSKIP or return sub {0};
while (<M>){
chomp;
next if /^#/;
next if /^\s*$/;
push @skip, _macify($_);
}
close M;
my $opts = $Is_VMS ? '(?i)' : '';
# Make sure each entry is isolated in its own parentheses, in case
# any of them contain alternations
my $regex = join '|', map "(?:$_)", @skip;
return sub { $_[0] =~ qr{$opts$regex} };
}
=item manicopy
manicopy($src, $dest_dir);
manicopy($src, $dest_dir, $how);
copies the files that are the keys in the HASH I<%$src> to the
$dest_dir. The HASH reference $read is typically returned by the
maniread() function. This function is useful for producing a directory
tree identical to the intended distribution tree. The third parameter
$how can be used to specify a different methods of "copying". Valid
values are C<cp>, which actually copies the files, C<ln> which creates
hard links, and C<best> which mostly links the files but copies any
symbolic link to make a tree without any symbolic link. Best is the
default.
=cut
sub manicopy {
my($read,$target,$how)=@_;
croak "manicopy() called without target argument" unless defined $target;
$how ||= 'cp';
require File::Path;
require File::Basename;
$target = VMS::Filespec::unixify($target) if $Is_VMS;
File::Path::mkpath([ $target ],! $Quiet,$Is_VMS ? undef : 0755);
foreach my $file (keys %$read){
if ($Is_MacOS) {
if ($file =~ m!:!) {
my $dir = _maccat($target, $file);
$dir =~ s/[^:]+$//;
File::Path::mkpath($dir,1,0755);
}
cp_if_diff($file, _maccat($target, $file), $how);
} else {
$file = VMS::Filespec::unixify($file) if $Is_VMS;
if ($file =~ m!/!) { # Ilya, that hurts, I fear, or maybe not?
my $dir = File::Basename::dirname($file);
$dir = VMS::Filespec::unixify($dir) if $Is_VMS;
File::Path::mkpath(["$target/$dir"],! $Quiet,$Is_VMS ? undef : 0755);
}
cp_if_diff($file, "$target/$file", $how);
}
}
}
sub cp_if_diff {
my($from, $to, $how)=@_;
-f $from or carp "$0: $from not found";
my($diff) = 0;
local(*F,*T);
open(F,"< $from\0") or die "Can't read $from: $!\n";
if (open(T,"< $to\0")) {
local $_;
while (<F>) { $diff++,last if $_ ne <T>; }
$diff++ unless eof(T);
close T;
}
else { $diff++; }
close F;
if ($diff) {
if (-e $to) {
unlink($to) or confess "unlink $to: $!";
}
STRICT_SWITCH: {
best($from,$to), last STRICT_SWITCH if $how eq 'best';
cp($from,$to), last STRICT_SWITCH if $how eq 'cp';
ln($from,$to), last STRICT_SWITCH if $how eq 'ln';
croak("ExtUtils::Manifest::cp_if_diff " .
"called with illegal how argument [$how]. " .
"Legal values are 'best', 'cp', and 'ln'.");
}
}
}
sub cp {
my ($srcFile, $dstFile) = @_;
my ($perm,$access,$mod) = (stat $srcFile)[2,8,9];
copy($srcFile,$dstFile);
utime $access, $mod + ($Is_VMS ? 1 : 0), $dstFile;
# chmod a+rX-w,go-w
chmod( 0444 | ( $perm & 0111 ? 0111 : 0 ), $dstFile )
unless ($^O eq 'MacOS');
}
sub ln {
my ($srcFile, $dstFile) = @_;
return &cp if $Is_VMS or ($^O eq 'MSWin32' and Win32::IsWin95());
link($srcFile, $dstFile);
# chmod a+r,go-w+X (except "X" only applies to u=x)
local($_) = $dstFile;
my $mode= 0444 | (stat)[2] & 0700;
if (! chmod( $mode | ( $mode & 0100 ? 0111 : 0 ), $_ )) {
unlink $dstFile;
return;
}
1;
}
unless (defined $Config{d_link}) {
# Really cool fix from Ilya :)
local $SIG{__WARN__} = sub {
warn @_ unless $_[0] =~ /^Subroutine .* redefined/;
};
*ln = \&cp;
}
sub best {
my ($srcFile, $dstFile) = @_;
if (-l $srcFile) {
cp($srcFile, $dstFile);
} else {
ln($srcFile, $dstFile) or cp($srcFile, $dstFile);
}
}
sub _macify {
my($file) = @_;
return $file unless $Is_MacOS;
$file =~ s|^\./||;
if ($file =~ m|/|) {
$file =~ s|/+|:|g;
$file = ":$file";
}
$file;
}
sub _maccat {
my($f1, $f2) = @_;
return "$f1/$f2" unless $Is_MacOS;
$f1 .= ":$f2";
$f1 =~ s/([^:]:):/$1/g;
return $f1;
}
sub _unmacify {
my($file) = @_;
return $file unless $Is_MacOS;
$file =~ s|^:||;
$file =~ s|([/ \n])|sprintf("\\%03o", unpack("c", $1))|ge;
$file =~ y|:|/|;
$file;
}
=item maniadd
maniadd({ $file => $comment, ...});
Adds an entry to an existing F<MANIFEST> unless its already there.
$file will be normalized (ie. Unixified). B<UNIMPLEMENTED>
=cut
sub maniadd {
my($additions) = shift;
_normalize($additions);
_fix_manifest($MANIFEST);
my $manifest = maniread();
my @needed = grep { !exists $manifest->{$_} } keys %$additions;
return 1 unless @needed;
open(MANIFEST, ">>$MANIFEST") or
die "maniadd() could not open $MANIFEST: $!";
foreach my $file (_sort @needed) {
my $comment = $additions->{$file} || '';
printf MANIFEST "%-40s %s\n", $file, $comment;
}
close MANIFEST or die "Error closing $MANIFEST: $!";
return 1;
}
# Sometimes MANIFESTs are missing a trailing newline. Fix this.
sub _fix_manifest {
my $manifest_file = shift;
open MANIFEST, $MANIFEST or die "Could not open $MANIFEST: $!";
# Yes, we should be using seek(), but I'd like to avoid loading POSIX
# to get SEEK_*
my @manifest = <MANIFEST>;
close MANIFEST;
unless( $manifest[-1] =~ /\n\z/ ) {
open MANIFEST, ">>$MANIFEST" or die "Could not open $MANIFEST: $!";
print MANIFEST "\n";
close MANIFEST;
}
}
# UNIMPLEMENTED
sub _normalize {
return;
}
=back
=head2 MANIFEST
Anything between white space and an end of line within a C<MANIFEST>
file is considered to be a comment. Filenames and comments are
separated by one or more TAB characters in the output.
=head2 MANIFEST.SKIP
The file MANIFEST.SKIP may contain regular expressions of files that
should be ignored by mkmanifest() and filecheck(). The regular
expressions should appear one on each line. Blank lines and lines
which start with C<#> are skipped. Use C<\#> if you need a regular
expression to start with a sharp character. A typical example:
# Version control files and dirs.
\bRCS\b
\bCVS\b
,v$
\B\.svn\b
# Makemaker generated files and dirs.
^MANIFEST\.
^Makefile$
^blib/
^MakeMaker-\d
# Temp, old and emacs backup files.
~$
\.old$
^#.*#$
^\.#
If no MANIFEST.SKIP file is found, a default set of skips will be
used, similar to the example above. If you want nothing skipped,
simply make an empty MANIFEST.SKIP file.
=head2 EXPORT_OK
C<&mkmanifest>, C<&manicheck>, C<&filecheck>, C<&fullcheck>,
C<&maniread>, and C<&manicopy> are exportable.
=head2 GLOBAL VARIABLES
C<$ExtUtils::Manifest::MANIFEST> defaults to C<MANIFEST>. Changing it
results in both a different C<MANIFEST> and a different
C<MANIFEST.SKIP> file. This is useful if you want to maintain
different distributions for different audiences (say a user version
and a developer version including RCS).
C<$ExtUtils::Manifest::Quiet> defaults to 0. If set to a true value,
all functions act silently.
C<$ExtUtils::Manifest::Debug> defaults to 0. If set to a true value,
or if PERL_MM_MANIFEST_DEBUG is true, debugging output will be
produced.
=head1 DIAGNOSTICS
All diagnostic output is sent to C<STDERR>.
=over 4
=item C<Not in MANIFEST:> I<file>
is reported if a file is found which is not in C<MANIFEST>.
=item C<Skipping> I<file>
is reported if a file is skipped due to an entry in C<MANIFEST.SKIP>.
=item C<No such file:> I<file>
is reported if a file mentioned in a C<MANIFEST> file does not
exist.
=item C<MANIFEST:> I<$!>
is reported if C<MANIFEST> could not be opened.
=item C<Added to MANIFEST:> I<file>
is reported by mkmanifest() if $Verbose is set and a file is added
to MANIFEST. $Verbose is set to 1 by default.
=back
=head1 ENVIRONMENT
=over 4
=item B<PERL_MM_MANIFEST_DEBUG>
Turns on debugging
=back
=head1 SEE ALSO
L<ExtUtils::MakeMaker> which has handy targets for most of the functionality.
=head1 AUTHOR
Andreas Koenig <F<andreas.koenig@anima.de>>
=cut
1;