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It's important to avoid inflicting that on the user. no strict 'refs'; for (qw(suid sgid svtx)) { my $val = eval { &{"Fcntl::S_I\U$_"} }; *{"_$_"} = defined $val ? sub { $_[0] & $val ? 1 : "" } : sub { "" }; } for (qw(SOCK CHR BLK REG DIR LNK)) { *{"S_IS$_"} = defined eval { &{"Fcntl::S_IF$_"} } ? \&{"Fcntl::S_IS$_"} : sub { "" }; } # FIFO flag and macro don't quite follow the S_IF/S_IS pattern above # RT #111638 *{"S_ISFIFO"} = defined &Fcntl::S_IFIFO ? \&Fcntl::S_ISFIFO : sub { "" }; } # from doio.c sub _ingroup { my ($gid, $eff) = @_; # I am assuming that since VMS doesn't have getgroups(2), $) will # always only contain a single entry. $^O eq "VMS" and return $_[0] == $); my ($egid, @supp) = split " ", $); my ($rgid) = split " ", $(; $gid == ($eff ? $egid : $rgid) and return 1; grep $gid == $_, @supp and return 1; return ""; } # VMS uses the Unix version of the routine, even though this is very # suboptimal. VMS has a permissions structure that doesn't really fit # into struct stat, and unlike on Win32 the normal -X operators respect # that, but unfortunately by the time we get here we've already lost the # information we need. It looks to me as though if we were to preserve # the st_devnam entry of vmsish.h's fake struct stat (which actually # holds the filename) it might be possible to do this right, but both # getting that value out of the struct (perl's stat doesn't return it) # and interpreting it later would require this module to have an XS # component (at which point we might as well just call Perl_cando and # have done with it). if (grep $^O eq $_, qw/os2 MSWin32 dos/) { # from doio.c *cando = sub { ($_[0][2] & $_[1]) ? 1 : "" }; } else { # from doio.c *cando = sub { my ($s, $mode, $eff) = @_; my $uid = $eff ? $> : $<; my ($stmode, $stuid, $stgid) = @$s[2,4,5]; # This code basically assumes that the rwx bits of the mode are # the 0777 bits, but so does Perl_cando. if ($uid == 0 && $^O ne "VMS") { # If we're root on unix # not testing for executable status => all file tests are true return 1 if !($mode & 0111); # testing for executable status => # for a file, any x bit will do # for a directory, always true return 1 if $stmode & 0111 || S_ISDIR($stmode); return ""; } if ($stuid == $uid) { $stmode & $mode and return 1; } elsif (_ingroup($stgid, $eff)) { $stmode & ($mode >> 3) and return 1; } else { $stmode & ($mode >> 6) and return 1; } return ""; }; } # alias for those who don't like objects *stat_cando = \&cando; my %op = ( r => sub { cando($_[0], S_IRUSR, 1) }, w => sub { cando($_[0], S_IWUSR, 1) }, x => sub { cando($_[0], S_IXUSR, 1) }, o => sub { $_[0][4] == $> }, R => sub { cando($_[0], S_IRUSR, 0) }, W => sub { cando($_[0], S_IWUSR, 0) }, X => sub { cando($_[0], S_IXUSR, 0) }, O => sub { $_[0][4] == $< }, e => sub { 1 }, z => sub { $_[0][7] == 0 }, s => sub { $_[0][7] }, f => sub { S_ISREG ($_[0][2]) }, d => sub { S_ISDIR ($_[0][2]) }, l => sub { S_ISLNK ($_[0][2]) }, p => sub { S_ISFIFO($_[0][2]) }, S => sub { S_ISSOCK($_[0][2]) }, b => sub { S_ISBLK ($_[0][2]) }, c => sub { S_ISCHR ($_[0][2]) }, u => sub { _suid($_[0][2]) }, g => sub { _sgid($_[0][2]) }, k => sub { _svtx($_[0][2]) }, M => sub { ($^T - $_[0][9] ) / 86400 }, C => sub { ($^T - $_[0][10]) / 86400 }, A => sub { ($^T - $_[0][8] ) / 86400 }, ); use constant HINT_FILETEST_ACCESS => 0x00400000; # we need fallback=>1 or stringifying breaks use overload fallback => 1, -X => sub { my ($s, $op) = @_; if (index("rwxRWX", $op) >= 0) { (caller 0)[8] & HINT_FILETEST_ACCESS and warnif("File::stat ignores use filetest 'access'"); $^O eq "VMS" and warnif("File::stat ignores VMS ACLs"); # It would be nice to have a warning about using -l on a # non-lstat, but that would require an extra member in the # object. } if ($op{$op}) { return $op{$op}->($_[0]); } else { croak "-$op is not implemented on a File::stat object"; } }; # Class::Struct forbids use of @ISA sub import { goto &Exporter::import } use Class::Struct qw(struct); struct 'File::stat' => [ map { $_ => '$' } qw{ dev ino mode nlink uid gid rdev size atime mtime ctime blksize blocks } ]; sub populate (@) { return unless @_; my $stob = new(); @$stob = ( $st_dev, $st_ino, $st_mode, $st_nlink, $st_uid, $st_gid, $st_rdev, $st_size, $st_atime, $st_mtime, $st_ctime, $st_blksize, $st_blocks ) = @_; return $stob; } sub lstat ($) { populate(CORE::lstat(shift)) } sub stat ($) { my $arg = shift; my $st = populate(CORE::stat $arg); return $st if defined $st; my $fh; { local $!; no strict 'refs'; require Symbol; $fh = \*{ Symbol::qualify( $arg, caller() )}; return unless defined fileno $fh; } return populate(CORE::stat $fh); } 1; __END__ =head1 NAME File::stat - by-name interface to Perl's built-in stat() functions =head1 SYNOPSIS use File::stat; $st = stat($file) or die "No $file: $!"; if ( ($st->mode & 0111) && $st->nlink > 1) ) { print "$file is executable with lotsa links\n"; } if ( -x $st ) { print "$file is executable\n"; } use Fcntl "S_IRUSR"; if ( $st->cando(S_IRUSR, 1) ) { print "My effective uid can read $file\n"; } use File::stat qw(:FIELDS); stat($file) or die "No $file: $!"; if ( ($st_mode & 0111) && ($st_nlink > 1) ) { print "$file is executable with lotsa links\n"; } =head1 DESCRIPTION This module's default exports override the core stat() and lstat() functions, replacing them with versions that return "File::stat" objects. This object has methods that return the similarly named structure field name from the stat(2) function; namely, dev, ino, mode, nlink, uid, gid, rdev, size, atime, mtime, ctime, blksize, and blocks. As of version 1.02 (provided with perl 5.12) the object provides C<"-X"> overloading, so you can call filetest operators (C<-f>, C<-x>, and so on) on it. It also provides a C<< ->cando >> method, called like $st->cando( ACCESS, EFFECTIVE ) where I<ACCESS> is one of C<S_IRUSR>, C<S_IWUSR> or C<S_IXUSR> from the L<Fcntl|Fcntl> module, and I<EFFECTIVE> indicates whether to use effective (true) or real (false) ids. The method interprets the C<mode>, C<uid> and C<gid> fields, and returns whether or not the current process would be allowed the specified access. If you don't want to use the objects, you may import the C<< ->cando >> method into your namespace as a regular function called C<stat_cando>. This takes an arrayref containing the return values of C<stat> or C<lstat> as its first argument, and interprets it for you. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your stat() and lstat() functions.) Access these fields as variables named with a preceding C<st_> in front their method names. Thus, C<$stat_obj-E<gt>dev()> corresponds to $st_dev if you import the fields. To access this functionality without the core overrides, pass the C<use> an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the C<CORE::> pseudo-package. =head1 BUGS As of Perl 5.8.0 after using this module you cannot use the implicit C<$_> or the special filehandle C<_> with stat() or lstat(), trying to do so leads into strange errors. The workaround is for C<$_> to be explicit my $stat_obj = stat $_; and for C<_> to explicitly populate the object using the unexported and undocumented populate() function with CORE::stat(): my $stat_obj = File::stat::populate(CORE::stat(_)); =head1 ERRORS =over 4 =item -%s is not implemented on a File::stat object The filetest operators C<-t>, C<-T> and C<-B> are not implemented, as they require more information than just a stat buffer. =back =head1 WARNINGS These can all be disabled with no warnings "File::stat"; =over 4 =item File::stat ignores use filetest 'access' You have tried to use one of the C<-rwxRWX> filetests with C<use filetest 'access'> in effect. C<File::stat> will ignore the pragma, and just use the information in the C<mode> member as usual. =item File::stat ignores VMS ACLs VMS systems have a permissions structure that cannot be completely represented in a stat buffer, and unlike on other systems the builtin filetest operators respect this. The C<File::stat> overloads, however, do not, since the information required is not available. =back =head1 NOTE While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. =head1 AUTHOR Tom Christiansen Copy.pm 0000644 00000037434 15204070641 0006026 0 ustar 00 # File/Copy.pm. Written in 1994 by Aaron Sherman <ajs@ajs.com>. This # source code has been placed in the public domain by the author. # Please be kind and preserve the documentation. # # Additions copyright 1996 by Charles Bailey. Permission is granted # to distribute the revised code under the same terms as Perl itself. package File::Copy; use 5.006; use strict; use warnings; no warnings 'newline'; use File::Spec; use Config; # During perl build, we need File::Copy but Scalar::Util might not be built yet # And then we need these games to avoid loading overload, as that will # confuse miniperl during the bootstrap of perl. my $Scalar_Util_loaded = eval q{ require Scalar::Util; require overload; 1 }; our(@ISA, @EXPORT, @EXPORT_OK, $VERSION, $Too_Big, $Syscopy_is_copy); sub copy; sub syscopy; sub cp; sub mv; $VERSION = '2.32'; require Exporter; @ISA = qw(Exporter); @EXPORT = qw(copy move); @EXPORT_OK = qw(cp mv); $Too_Big = 1024 * 1024 * 2; sub croak { require Carp; goto &Carp::croak; } sub carp { require Carp; goto &Carp::carp; } sub _catname { my($from, $to) = @_; if (not defined &basename) { require File::Basename; import File::Basename 'basename'; } return File::Spec->catfile($to, basename($from)); } # _eq($from, $to) tells whether $from and $to are identical sub _eq { my ($from, $to) = map { $Scalar_Util_loaded && Scalar::Util::blessed($_) && overload::Method($_, q{""}) ? "$_" : $_ } (@_); return '' if ( (ref $from) xor (ref $to) ); return $from == $to if ref $from; return $from eq $to; } sub copy { croak("Usage: copy(FROM, TO [, BUFFERSIZE]) ") unless(@_ == 2 || @_ == 3); my $from = shift; my $to = shift; my $size; if (@_) { $size = shift(@_) + 0; croak("Bad buffer size for copy: $size\n") unless ($size > 0); } my $from_a_handle = (ref($from) ? (ref($from) eq 'GLOB' || UNIVERSAL::isa($from, 'GLOB') || UNIVERSAL::isa($from, 'IO::Handle')) : (ref(\$from) eq 'GLOB')); my $to_a_handle = (ref($to) ? (ref($to) eq 'GLOB' || UNIVERSAL::isa($to, 'GLOB') || UNIVERSAL::isa($to, 'IO::Handle')) : (ref(\$to) eq 'GLOB')); if (_eq($from, $to)) { # works for references, too carp("'$from' and '$to' are identical (not copied)"); return 0; } if (!$from_a_handle && !$to_a_handle && -d $to && ! -d $from) { $to = _catname($from, $to); } if ((($Config{d_symlink} && $Config{d_readlink}) || $Config{d_link}) && !($^O eq 'MSWin32' || $^O eq 'os2')) { my @fs = stat($from); if (@fs) { my @ts = stat($to); if (@ts && $fs[0] == $ts[0] && $fs[1] == $ts[1] && !-p $from) { carp("'$from' and '$to' are identical (not copied)"); return 0; } } } elsif (_eq($from, $to)) { carp("'$from' and '$to' are identical (not copied)"); return 0; } if (defined &syscopy && !$Syscopy_is_copy && !$to_a_handle && !($from_a_handle && $^O eq 'os2' ) # OS/2 cannot handle handles && !($from_a_handle && $^O eq 'MSWin32') && !($from_a_handle && $^O eq 'NetWare') ) { if ($^O eq 'VMS' && -e $from && ! -d $to && ! -d $from) { # VMS natively inherits path components from the source of a # copy, but we want the Unixy behavior of inheriting from # the current working directory. Also, default in a trailing # dot for null file types. $to = VMS::Filespec::rmsexpand(VMS::Filespec::vmsify($to), '.'); # Get rid of the old versions to be like UNIX 1 while unlink $to; } return syscopy($from, $to) || 0; } my $closefrom = 0; my $closeto = 0; my ($status, $r, $buf); local($\) = ''; my $from_h; if ($from_a_handle) { $from_h = $from; } else { open $from_h, "<", $from or goto fail_open1; binmode $from_h or die "($!,$^E)"; $closefrom = 1; } # Seems most logical to do this here, in case future changes would want to # make this croak for some reason. unless (defined $size) { $size = tied(*$from_h) ? 0 : -s $from_h || 0; $size = 1024 if ($size < 512); $size = $Too_Big if ($size > $Too_Big); } my $to_h; if ($to_a_handle) { $to_h = $to; } else { $to_h = \do { local *FH }; # XXX is this line obsolete? open $to_h, ">", $to or goto fail_open2; binmode $to_h or die "($!,$^E)"; $closeto = 1; } $! = 0; for (;;) { my ($r, $w, $t); defined($r = sysread($from_h, $buf, $size)) or goto fail_inner; last unless $r; for ($w = 0; $w < $r; $w += $t) { $t = syswrite($to_h, $buf, $r - $w, $w) or goto fail_inner; } } close($to_h) || goto fail_open2 if $closeto; close($from_h) || goto fail_open1 if $closefrom; # Use this idiom to avoid uninitialized value warning. return 1; # All of these contortions try to preserve error messages... fail_inner: if ($closeto) { $status = $!; $! = 0; close $to_h; $! = $status unless $!; } fail_open2: if ($closefrom) { $status = $!; $! = 0; close $from_h; $! = $status unless $!; } fail_open1: return 0; } sub cp { my($from,$to) = @_; my(@fromstat) = stat $from; my(@tostat) = stat $to; my $perm; return 0 unless copy(@_) and @fromstat; if (@tostat) { $perm = $tostat[2]; } else { $perm = $fromstat[2] & ~(umask || 0); @tostat = stat $to; } # Might be more robust to look for S_I* in Fcntl, but we're # trying to avoid dependence on any XS-containing modules, # since File::Copy is used during the Perl build. $perm &= 07777; if ($perm & 06000) { croak("Unable to check setuid/setgid permissions for $to: $!") unless @tostat; if ($perm & 04000 and # setuid $fromstat[4] != $tostat[4]) { # owner must match $perm &= ~06000; } if ($perm & 02000 && $> != 0) { # if not root, setgid my $ok = $fromstat[5] == $tostat[5]; # group must match if ($ok) { # and we must be in group $ok = grep { $_ == $fromstat[5] } split /\s+/, $) } $perm &= ~06000 unless $ok; } } return 0 unless @tostat; return 1 if $perm == ($tostat[2] & 07777); return eval { chmod $perm, $to; } ? 1 : 0; } sub _move { croak("Usage: move(FROM, TO) ") unless @_ == 3; my($from,$to,$fallback) = @_; my($fromsz,$tosz1,$tomt1,$tosz2,$tomt2,$sts,$ossts); if (-d $to && ! -d $from) { $to = _catname($from, $to); } ($tosz1,$tomt1) = (stat($to))[7,9]; $fromsz = -s $from; if ($^O eq 'os2' and defined $tosz1 and defined $fromsz) { # will not rename with overwrite unlink $to; } if ($^O eq 'VMS' && -e $from && ! -d $to && ! -d $from) { # VMS natively inherits path components from the source of a # copy, but we want the Unixy behavior of inheriting from # the current working directory. Also, default in a trailing # dot for null file types. $to = VMS::Filespec::rmsexpand(VMS::Filespec::vmsify($to), '.'); # Get rid of the old versions to be like UNIX 1 while unlink $to; } return 1 if rename $from, $to; # Did rename return an error even though it succeeded, because $to # is on a remote NFS file system, and NFS lost the server's ack? return 1 if defined($fromsz) && !-e $from && # $from disappeared (($tosz2,$tomt2) = (stat($to))[7,9]) && # $to's there ((!defined $tosz1) || # not before or ($tosz1 != $tosz2 or $tomt1 != $tomt2)) && # was changed $tosz2 == $fromsz; # it's all there ($tosz1,$tomt1) = (stat($to))[7,9]; # just in case rename did something { local $@; eval { local $SIG{__DIE__}; $fallback->($from,$to) or die; my($atime, $mtime) = (stat($from))[8,9]; utime($atime, $mtime, $to); unlink($from) or die; }; return 1 unless $@; } ($sts,$ossts) = ($! + 0, $^E + 0); ($tosz2,$tomt2) = ((stat($to))[7,9],0,0) if defined $tomt1; unlink($to) if !defined($tomt1) or $tomt1 != $tomt2 or $tosz1 != $tosz2; ($!,$^E) = ($sts,$ossts); return 0; } sub move { _move(@_,\©); } sub mv { _move(@_,\&cp); } # &syscopy is an XSUB under OS/2 unless (defined &syscopy) { if ($^O eq 'VMS') { *syscopy = \&rmscopy; } elsif ($^O eq 'MSWin32' && defined &DynaLoader::boot_DynaLoader) { # Win32::CopyFile() fill only work if we can load Win32.xs *syscopy = sub { return 0 unless @_ == 2; return Win32::CopyFile(@_, 1); }; } else { $Syscopy_is_copy = 1; *syscopy = \© } } 1; __END__ =head1 NAME File::Copy - Copy files or filehandles =head1 SYNOPSIS use File::Copy; copy("sourcefile","destinationfile") or die "Copy failed: $!"; copy("Copy.pm",\*STDOUT); move("/dev1/sourcefile","/dev2/destinationfile"); use File::Copy "cp"; $n = FileHandle->new("/a/file","r"); cp($n,"x"); =head1 DESCRIPTION The File::Copy module provides two basic functions, C<copy> and C<move>, which are useful for getting the contents of a file from one place to another. =over 4 =item copy X<copy> X<cp> The C<copy> function takes two parameters: a file to copy from and a file to copy to. Either argument may be a string, a FileHandle reference or a FileHandle glob. Obviously, if the first argument is a filehandle of some sort, it will be read from, and if it is a file I<name> it will be opened for reading. Likewise, the second argument will be written to. If the second argument does not exist but the parent directory does exist, then it will be created. Trying to copy a file into a non-existent directory is an error. Trying to copy a file on top of itself is also an error. C<copy> will not overwrite read-only files. If the destination (second argument) already exists and is a directory, and the source (first argument) is not a filehandle, then the source file will be copied into the directory specified by the destination, using the same base name as the source file. It's a failure to have a filehandle as the source when the destination is a directory. B<Note that passing in files as handles instead of names may lead to loss of information on some operating systems; it is recommended that you use file names whenever possible.> Files are opened in binary mode where applicable. To get a consistent behaviour when copying from a filehandle to a file, use C<binmode> on the filehandle. An optional third parameter can be used to specify the buffer size used for copying. This is the number of bytes from the first file, that will be held in memory at any given time, before being written to the second file. The default buffer size depends upon the file, but will generally be the whole file (up to 2MB), or 1k for filehandles that do not reference files (eg. sockets). You may use the syntax C<use File::Copy "cp"> to get at the C<cp> alias for this function. The syntax is I<exactly> the same. The behavior is nearly the same as well: as of version 2.15, C<cp> will preserve the source file's permission bits like the shell utility C<cp(1)> would do, while C<copy> uses the default permissions for the target file (which may depend on the process' C<umask>, file ownership, inherited ACLs, etc.). If an error occurs in setting permissions, C<cp> will return 0, regardless of whether the file was successfully copied. =item move X<move> X<mv> X<rename> The C<move> function also takes two parameters: the current name and the intended name of the file to be moved. If the destination already exists and is a directory, and the source is not a directory, then the source file will be renamed into the directory specified by the destination. If possible, move() will simply rename the file. Otherwise, it copies the file to the new location and deletes the original. If an error occurs during this copy-and-delete process, you may be left with a (possibly partial) copy of the file under the destination name. You may use the C<mv> alias for this function in the same way that you may use the C<cp> alias for C<copy>. =item syscopy X<syscopy> File::Copy also provides the C<syscopy> routine, which copies the file specified in the first parameter to the file specified in the second parameter, preserving OS-specific attributes and file structure. For Unix systems, this is equivalent to the simple C<copy> routine, which doesn't preserve OS-specific attributes. For VMS systems, this calls the C<rmscopy> routine (see below). For OS/2 systems, this calls the C<syscopy> XSUB directly. For Win32 systems, this calls C<Win32::CopyFile>. B<Special behaviour if C<syscopy> is defined (OS/2, VMS and Win32)>: If both arguments to C<copy> are not file handles, then C<copy> will perform a "system copy" of the input file to a new output file, in order to preserve file attributes, indexed file structure, I<etc.> The buffer size parameter is ignored. If either argument to C<copy> is a handle to an opened file, then data is copied using Perl operators, and no effort is made to preserve file attributes or record structure. The system copy routine may also be called directly under VMS and OS/2 as C<File::Copy::syscopy> (or under VMS as C<File::Copy::rmscopy>, which is the routine that does the actual work for syscopy). =item rmscopy($from,$to[,$date_flag]) X<rmscopy> The first and second arguments may be strings, typeglobs, typeglob references, or objects inheriting from IO::Handle; they are used in all cases to obtain the I<filespec> of the input and output files, respectively. The name and type of the input file are used as defaults for the output file, if necessary. A new version of the output file is always created, which inherits the structure and RMS attributes of the input file, except for owner and protections (and possibly timestamps; see below). All data from the input file is copied to the output file; if either of the first two parameters to C<rmscopy> is a file handle, its position is unchanged. (Note that this means a file handle pointing to the output file will be associated with an old version of that file after C<rmscopy> returns, not the newly created version.) The third parameter is an integer flag, which tells C<rmscopy> how to handle timestamps. If it is E<lt> 0, none of the input file's timestamps are propagated to the output file. If it is E<gt> 0, then it is interpreted as a bitmask: if bit 0 (the LSB) is set, then timestamps other than the revision date are propagated; if bit 1 is set, the revision date is propagated. If the third parameter to C<rmscopy> is 0, then it behaves much like the DCL COPY command: if the name or type of the output file was explicitly specified, then no timestamps are propagated, but if they were taken implicitly from the input filespec, then all timestamps other than the revision date are propagated. If this parameter is not supplied, it defaults to 0. C<rmscopy> is VMS specific and cannot be exported; it must be referenced by its full name, e.g.: File::Copy::rmscopy($from, $to) or die $!; Like C<copy>, C<rmscopy> returns 1 on success. If an error occurs, it sets C<$!>, deletes the output file, and returns 0. =back =head1 RETURN All functions return 1 on success, 0 on failure. $! will be set if an error was encountered. =head1 NOTES Before calling copy() or move() on a filehandle, the caller should close or flush() the file to avoid writes being lost. Note that this is the case even for move(), because it may actually copy the file, depending on the OS-specific inplementation, and the underlying filesystem(s). =head1 AUTHOR File::Copy was written by Aaron Sherman I<E<lt>ajs@ajs.comE<gt>> in 1995, and updated by Charles Bailey I<E<lt>bailey@newman.upenn.eduE<gt>> in 1996. =cut GlobMapper.pm 0000644 00000036476 15204070641 0007151 0 ustar 00 package File::GlobMapper; use strict; use warnings; use Carp; our ($CSH_GLOB); BEGIN { if ($] < 5.006) { require File::BSDGlob; import File::BSDGlob qw(:glob) ; $CSH_GLOB = File::BSDGlob::GLOB_CSH() ; *globber = \&File::BSDGlob::csh_glob; } else { require File::Glob; import File::Glob qw(:glob) ; $CSH_GLOB = File::Glob::GLOB_CSH() ; #*globber = \&File::Glob::bsd_glob; *globber = \&File::Glob::csh_glob; } } our ($Error); our ($VERSION, @EXPORT_OK); $VERSION = '1.001'; @EXPORT_OK = qw( globmap ); our ($noPreBS, $metachars, $matchMetaRE, %mapping, %wildCount); $noPreBS = '(?<!\\\)' ; # no preceding backslash $metachars = '.*?[](){}'; $matchMetaRE = '[' . quotemeta($metachars) . ']'; %mapping = ( '*' => '([^/]*)', '?' => '([^/])', '.' => '\.', '[' => '([', '(' => '(', ')' => ')', ); %wildCount = map { $_ => 1 } qw/ * ? . { ( [ /; sub globmap ($$;) { my $inputGlob = shift ; my $outputGlob = shift ; my $obj = new File::GlobMapper($inputGlob, $outputGlob, @_) or croak "globmap: $Error" ; return $obj->getFileMap(); } sub new { my $class = shift ; my $inputGlob = shift ; my $outputGlob = shift ; # TODO -- flags needs to default to whatever File::Glob does my $flags = shift || $CSH_GLOB ; #my $flags = shift ; $inputGlob =~ s/^\s*\<\s*//; $inputGlob =~ s/\s*\>\s*$//; $outputGlob =~ s/^\s*\<\s*//; $outputGlob =~ s/\s*\>\s*$//; my %object = ( InputGlob => $inputGlob, OutputGlob => $outputGlob, GlobFlags => $flags, Braces => 0, WildCount => 0, Pairs => [], Sigil => '#', ); my $self = bless \%object, ref($class) || $class ; $self->_parseInputGlob() or return undef ; $self->_parseOutputGlob() or return undef ; my @inputFiles = globber($self->{InputGlob}, $flags) ; if (GLOB_ERROR) { $Error = $!; return undef ; } #if (whatever) { my $missing = grep { ! -e $_ } @inputFiles ; if ($missing) { $Error = "$missing input files do not exist"; return undef ; } } $self->{InputFiles} = \@inputFiles ; $self->_getFiles() or return undef ; return $self; } sub _retError { my $string = shift ; $Error = "$string in input fileglob" ; return undef ; } sub _unmatched { my $delimeter = shift ; _retError("Unmatched $delimeter"); return undef ; } sub _parseBit { my $self = shift ; my $string = shift ; my $out = ''; my $depth = 0 ; while ($string =~ s/(.*?)$noPreBS(,|$matchMetaRE)//) { $out .= quotemeta($1) ; $out .= $mapping{$2} if defined $mapping{$2}; ++ $self->{WildCount} if $wildCount{$2} ; if ($2 eq ',') { return _unmatched("(") if $depth ; $out .= '|'; } elsif ($2 eq '(') { ++ $depth ; } elsif ($2 eq ')') { return _unmatched(")") if ! $depth ; -- $depth ; } elsif ($2 eq '[') { # TODO -- quotemeta & check no '/' # TODO -- check for \] & other \ within the [] $string =~ s#(.*?\])## or return _unmatched("["); $out .= "$1)" ; } elsif ($2 eq ']') { return _unmatched("]"); } elsif ($2 eq '{' || $2 eq '}') { return _retError("Nested {} not allowed"); } } $out .= quotemeta $string; return _unmatched("(") if $depth ; return $out ; } sub _parseInputGlob { my $self = shift ; my $string = $self->{InputGlob} ; my $inGlob = ''; # Multiple concatenated *'s don't make sense #$string =~ s#\*\*+#*# ; # TODO -- Allow space to delimit patterns? #my @strings = split /\s+/, $string ; #for my $str (@strings) my $out = ''; my $depth = 0 ; while ($string =~ s/(.*?)$noPreBS($matchMetaRE)//) { $out .= quotemeta($1) ; $out .= $mapping{$2} if defined $mapping{$2}; ++ $self->{WildCount} if $wildCount{$2} ; if ($2 eq '(') { ++ $depth ; } elsif ($2 eq ')') { return _unmatched(")") if ! $depth ; -- $depth ; } elsif ($2 eq '[') { # TODO -- quotemeta & check no '/' or '(' or ')' # TODO -- check for \] & other \ within the [] $string =~ s#(.*?\])## or return _unmatched("["); $out .= "$1)" ; } elsif ($2 eq ']') { return _unmatched("]"); } elsif ($2 eq '}') { return _unmatched("}"); } elsif ($2 eq '{') { # TODO -- check no '/' within the {} # TODO -- check for \} & other \ within the {} my $tmp ; unless ( $string =~ s/(.*?)$noPreBS\}//) { return _unmatched("{"); } #$string =~ s#(.*?)\}##; #my $alt = join '|', # map { quotemeta $_ } # split "$noPreBS,", $1 ; my $alt = $self->_parseBit($1); defined $alt or return 0 ; $out .= "($alt)" ; ++ $self->{Braces} ; } } return _unmatched("(") if $depth ; $out .= quotemeta $string ; $self->{InputGlob} =~ s/$noPreBS[\(\)]//g; $self->{InputPattern} = $out ; #print "# INPUT '$self->{InputGlob}' => '$out'\n"; return 1 ; } sub _parseOutputGlob { my $self = shift ; my $string = $self->{OutputGlob} ; my $maxwild = $self->{WildCount}; if ($self->{GlobFlags} & GLOB_TILDE) #if (1) { $string =~ s{ ^ ~ # find a leading tilde ( # save this in $1 [^/] # a non-slash character * # repeated 0 or more times (0 means me) ) }{ $1 ? (getpwnam($1))[7] : ( $ENV{HOME} || $ENV{LOGDIR} ) }ex; } # max #1 must be == to max no of '*' in input while ( $string =~ m/#(\d)/g ) { croak "Max wild is #$maxwild, you tried #$1" if $1 > $maxwild ; } my $noPreBS = '(?<!\\\)' ; # no preceding backslash #warn "noPreBS = '$noPreBS'\n"; #$string =~ s/${noPreBS}\$(\d)/\${$1}/g; $string =~ s/${noPreBS}#(\d)/\${$1}/g; $string =~ s#${noPreBS}\*#\${inFile}#g; $string = '"' . $string . '"'; #print "OUTPUT '$self->{OutputGlob}' => '$string'\n"; $self->{OutputPattern} = $string ; return 1 ; } sub _getFiles { my $self = shift ; my %outInMapping = (); my %inFiles = () ; foreach my $inFile (@{ $self->{InputFiles} }) { next if $inFiles{$inFile} ++ ; my $outFile = $inFile ; if ( $inFile =~ m/$self->{InputPattern}/ ) { no warnings 'uninitialized'; eval "\$outFile = $self->{OutputPattern};" ; if (defined $outInMapping{$outFile}) { $Error = "multiple input files map to one output file"; return undef ; } $outInMapping{$outFile} = $inFile; push @{ $self->{Pairs} }, [$inFile, $outFile]; } } return 1 ; } sub getFileMap { my $self = shift ; return $self->{Pairs} ; } sub getHash { my $self = shift ; return { map { $_->[0] => $_->[1] } @{ $self->{Pairs} } } ; } 1; __END__ =head1 NAME File::GlobMapper - Extend File Glob to Allow Input and Output Files =head1 SYNOPSIS use File::GlobMapper qw( globmap ); my $aref = globmap $input => $output or die $File::GlobMapper::Error ; my $gm = new File::GlobMapper $input => $output or die $File::GlobMapper::Error ; =head1 DESCRIPTION This module needs Perl5.005 or better. This module takes the existing C<File::Glob> module as a starting point and extends it to allow new filenames to be derived from the files matched by C<File::Glob>. This can be useful when carrying out batch operations on multiple files that have both an input filename and output filename and the output file can be derived from the input filename. Examples of operations where this can be useful include, file renaming, file copying and file compression. =head2 Behind The Scenes To help explain what C<File::GlobMapper> does, consider what code you would write if you wanted to rename all files in the current directory that ended in C<.tar.gz> to C<.tgz>. So say these files are in the current directory alpha.tar.gz beta.tar.gz gamma.tar.gz and they need renamed to this alpha.tgz beta.tgz gamma.tgz Below is a possible implementation of a script to carry out the rename (error cases have been omitted) foreach my $old ( glob "*.tar.gz" ) { my $new = $old; $new =~ s#(.*)\.tar\.gz$#$1.tgz# ; rename $old => $new or die "Cannot rename '$old' to '$new': $!\n; } Notice that a file glob pattern C<*.tar.gz> was used to match the C<.tar.gz> files, then a fairly similar regular expression was used in the substitute to allow the new filename to be created. Given that the file glob is just a cut-down regular expression and that it has already done a lot of the hard work in pattern matching the filenames, wouldn't it be handy to be able to use the patterns in the fileglob to drive the new filename? Well, that's I<exactly> what C<File::GlobMapper> does. Here is same snippet of code rewritten using C<globmap> for my $pair (globmap '<*.tar.gz>' => '<#1.tgz>' ) { my ($from, $to) = @$pair; rename $from => $to or die "Cannot rename '$old' to '$new': $!\n; } So how does it work? Behind the scenes the C<globmap> function does a combination of a file glob to match existing filenames followed by a substitute to create the new filenames. Notice how both parameters to C<globmap> are strings that are delimited by <>. This is done to make them look more like file globs - it is just syntactic sugar, but it can be handy when you want the strings to be visually distinctive. The enclosing <> are optional, so you don't have to use them - in fact the first thing globmap will do is remove these delimiters if they are present. The first parameter to C<globmap>, C<*.tar.gz>, is an I<Input File Glob>. Once the enclosing "< ... >" is removed, this is passed (more or less) unchanged to C<File::Glob> to carry out a file match. Next the fileglob C<*.tar.gz> is transformed behind the scenes into a full Perl regular expression, with the additional step of wrapping each transformed wildcard metacharacter sequence in parenthesis. In this case the input fileglob C<*.tar.gz> will be transformed into this Perl regular expression ([^/]*)\.tar\.gz Wrapping with parenthesis allows the wildcard parts of the Input File Glob to be referenced by the second parameter to C<globmap>, C<#1.tgz>, the I<Output File Glob>. This parameter operates just like the replacement part of a substitute command. The difference is that the C<#1> syntax is used to reference sub-patterns matched in the input fileglob, rather than the C<$1> syntax that is used with perl regular expressions. In this case C<#1> is used to refer to the text matched by the C<*> in the Input File Glob. This makes it easier to use this module where the parameters to C<globmap> are typed at the command line. The final step involves passing each filename matched by the C<*.tar.gz> file glob through the derived Perl regular expression in turn and expanding the output fileglob using it. The end result of all this is a list of pairs of filenames. By default that is what is returned by C<globmap>. In this example the data structure returned will look like this ( ['alpha.tar.gz' => 'alpha.tgz'], ['beta.tar.gz' => 'beta.tgz' ], ['gamma.tar.gz' => 'gamma.tgz'] ) Each pair is an array reference with two elements - namely the I<from> filename, that C<File::Glob> has matched, and a I<to> filename that is derived from the I<from> filename. =head2 Limitations C<File::GlobMapper> has been kept simple deliberately, so it isn't intended to solve all filename mapping operations. Under the hood C<File::Glob> (or for older versions of Perl, C<File::BSDGlob>) is used to match the files, so you will never have the flexibility of full Perl regular expression. =head2 Input File Glob The syntax for an Input FileGlob is identical to C<File::Glob>, except for the following =over 5 =item 1. No nested {} =item 2. Whitespace does not delimit fileglobs. =item 3. The use of parenthesis can be used to capture parts of the input filename. =item 4. If an Input glob matches the same file more than once, only the first will be used. =back The syntax =over 5 =item B<~> =item B<~user> =item B<.> Matches a literal '.'. Equivalent to the Perl regular expression \. =item B<*> Matches zero or more characters, except '/'. Equivalent to the Perl regular expression [^/]* =item B<?> Matches zero or one character, except '/'. Equivalent to the Perl regular expression [^/]? =item B<\> Backslash is used, as usual, to escape the next character. =item B<[]> Character class. =item B<{,}> Alternation =item B<()> Capturing parenthesis that work just like perl =back Any other character it taken literally. =head2 Output File Glob The Output File Glob is a normal string, with 2 glob-like features. The first is the '*' metacharacter. This will be replaced by the complete filename matched by the input file glob. So *.c *.Z The second is Output FileGlobs take the =over 5 =item "*" The "*" character will be replaced with the complete input filename. =item #1 Patterns of the form /#\d/ will be replaced with the =back =head2 Returned Data =head1 EXAMPLES =head2 A Rename script Below is a simple "rename" script that uses C<globmap> to determine the source and destination filenames. use File::GlobMapper qw(globmap) ; use File::Copy; die "rename: Usage rename 'from' 'to'\n" unless @ARGV == 2 ; my $fromGlob = shift @ARGV; my $toGlob = shift @ARGV; my $pairs = globmap($fromGlob, $toGlob) or die $File::GlobMapper::Error; for my $pair (@$pairs) { my ($from, $to) = @$pair; move $from => $to ; } Here is an example that renames all c files to cpp. $ rename '*.c' '#1.cpp' =head2 A few example globmaps Below are a few examples of globmaps To copy all your .c file to a backup directory '</my/home/*.c>' '</my/backup/#1.c>' If you want to compress all '</my/home/*.[ch]>' '<*.gz>' To uncompress '</my/home/*.[ch].gz>' '</my/home/#1.#2>' =head1 SEE ALSO L<File::Glob|File::Glob> =head1 AUTHOR The I<File::GlobMapper> module was written by Paul Marquess, F<pmqs@cpan.org>. =head1 COPYRIGHT AND LICENSE Copyright (c) 2005 Paul Marquess. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. Basename.pm 0000644 00000025672 15204070641 0006630 0 ustar 00 =head1 NAME File::Basename - Parse file paths into directory, filename and suffix. =head1 SYNOPSIS use File::Basename; ($name,$path,$suffix) = fileparse($fullname,@suffixlist); $name = fileparse($fullname,@suffixlist); $basename = basename($fullname,@suffixlist); $dirname = dirname($fullname); =head1 DESCRIPTION These routines allow you to parse file paths into their directory, filename and suffix. B<NOTE>: C<dirname()> and C<basename()> emulate the behaviours, and quirks, of the shell and C functions of the same name. See each function's documentation for details. If your concern is just parsing paths it is safer to use L<File::Spec>'s C<splitpath()> and C<splitdir()> methods. It is guaranteed that # Where $path_separator is / for Unix, \ for Windows, etc... dirname($path) . $path_separator . basename($path); is equivalent to the original path for all systems but VMS. =cut package File::Basename; # File::Basename is used during the Perl build, when the re extension may # not be available, but we only actually need it if running under tainting. BEGIN { if (${^TAINT}) { require re; re->import('taint'); } } use strict; use 5.006; use warnings; our(@ISA, @EXPORT, $VERSION, $Fileparse_fstype, $Fileparse_igncase); require Exporter; @ISA = qw(Exporter); @EXPORT = qw(fileparse fileparse_set_fstype basename dirname); $VERSION = "2.85"; fileparse_set_fstype($^O); =over 4 =item C<fileparse> X<fileparse> my($filename, $dirs, $suffix) = fileparse($path); my($filename, $dirs, $suffix) = fileparse($path, @suffixes); my $filename = fileparse($path, @suffixes); The C<fileparse()> routine divides a file path into its $dirs, $filename and (optionally) the filename $suffix. $dirs contains everything up to and including the last directory separator in the $path including the volume (if applicable). The remainder of the $path is the $filename. # On Unix returns ("baz", "/foo/bar/", "") fileparse("/foo/bar/baz"); # On Windows returns ("baz", 'C:\foo\bar\', "") fileparse('C:\foo\bar\baz'); # On Unix returns ("", "/foo/bar/baz/", "") fileparse("/foo/bar/baz/"); If @suffixes are given each element is a pattern (either a string or a C<qr//>) matched against the end of the $filename. The matching portion is removed and becomes the $suffix. # On Unix returns ("baz", "/foo/bar/", ".txt") fileparse("/foo/bar/baz.txt", qr/\.[^.]*/); If type is non-Unix (see L</fileparse_set_fstype>) then the pattern matching for suffix removal is performed case-insensitively, since those systems are not case-sensitive when opening existing files. You are guaranteed that C<$dirs . $filename . $suffix> will denote the same location as the original $path. =cut sub fileparse { my($fullname,@suffices) = @_; unless (defined $fullname) { require Carp; Carp::croak("fileparse(): need a valid pathname"); } my $orig_type = ''; my($type,$igncase) = ($Fileparse_fstype, $Fileparse_igncase); my($taint) = substr($fullname,0,0); # Is $fullname tainted? if ($type eq "VMS" and $fullname =~ m{/} ) { # We're doing Unix emulation $orig_type = $type; $type = 'Unix'; } my($dirpath, $basename); if (grep { $type eq $_ } qw(MSDOS DOS MSWin32 Epoc)) { ($dirpath,$basename) = ($fullname =~ /^((?:.*[:\\\/])?)(.*)/s); $dirpath .= '.\\' unless $dirpath =~ /[\\\/]\z/; } elsif ($type eq "OS2") { ($dirpath,$basename) = ($fullname =~ m#^((?:.*[:\\/])?)(.*)#s); $dirpath = './' unless $dirpath; # Can't be 0 $dirpath .= '/' unless $dirpath =~ m#[\\/]\z#; } elsif ($type eq "MacOS") { ($dirpath,$basename) = ($fullname =~ /^(.*:)?(.*)/s); $dirpath = ':' unless $dirpath; } elsif ($type eq "AmigaOS") { ($dirpath,$basename) = ($fullname =~ /(.*[:\/])?(.*)/s); $dirpath = './' unless $dirpath; } elsif ($type eq 'VMS' ) { ($dirpath,$basename) = ($fullname =~ /^(.*[:>\]])?(.*)/s); $dirpath ||= ''; # should always be defined } else { # Default to Unix semantics. ($dirpath,$basename) = ($fullname =~ m{^(.*/)?(.*)}s); if ($orig_type eq 'VMS' and $fullname =~ m{^(/[^/]+/000000(/|$))(.*)}) { # dev:[000000] is top of VMS tree, similar to Unix '/' # so strip it off and treat the rest as "normal" my $devspec = $1; my $remainder = $3; ($dirpath,$basename) = ($remainder =~ m{^(.*/)?(.*)}s); $dirpath ||= ''; # should always be defined $dirpath = $devspec.$dirpath; } $dirpath = './' unless $dirpath; } my $tail = ''; my $suffix = ''; if (@suffices) { foreach $suffix (@suffices) { my $pat = ($igncase ? '(?i)' : '') . "($suffix)\$"; if ($basename =~ s/$pat//s) { $taint .= substr($suffix,0,0); $tail = $1 . $tail; } } } # Ensure taint is propagated from the path to its pieces. $tail .= $taint; wantarray ? ($basename .= $taint, $dirpath .= $taint, $tail) : ($basename .= $taint); } =item C<basename> X<basename> X<filename> my $filename = basename($path); my $filename = basename($path, @suffixes); This function is provided for compatibility with the Unix shell command C<basename(1)>. It does B<NOT> always return the file name portion of a path as you might expect. To be safe, if you want the file name portion of a path use C<fileparse()>. C<basename()> returns the last level of a filepath even if the last level is clearly directory. In effect, it is acting like C<pop()> for paths. This differs from C<fileparse()>'s behaviour. # Both return "bar" basename("/foo/bar"); basename("/foo/bar/"); @suffixes work as in C<fileparse()> except all regex metacharacters are quoted. # These two function calls are equivalent. my $filename = basename("/foo/bar/baz.txt", ".txt"); my $filename = fileparse("/foo/bar/baz.txt", qr/\Q.txt\E/); Also note that in order to be compatible with the shell command, C<basename()> does not strip off a suffix if it is identical to the remaining characters in the filename. =cut sub basename { my($path) = shift; # From BSD basename(1) # The basename utility deletes any prefix ending with the last slash '/' # character present in string (after first stripping trailing slashes) _strip_trailing_sep($path); my($basename, $dirname, $suffix) = fileparse( $path, map("\Q$_\E",@_) ); # From BSD basename(1) # The suffix is not stripped if it is identical to the remaining # characters in string. if( length $suffix and !length $basename ) { $basename = $suffix; } # Ensure that basename '/' == '/' if( !length $basename ) { $basename = $dirname; } return $basename; } =item C<dirname> X<dirname> This function is provided for compatibility with the Unix shell command C<dirname(1)> and has inherited some of its quirks. In spite of its name it does B<NOT> always return the directory name as you might expect. To be safe, if you want the directory name of a path use C<fileparse()>. Only on VMS (where there is no ambiguity between the file and directory portions of a path) and AmigaOS (possibly due to an implementation quirk in this module) does C<dirname()> work like C<fileparse($path)>, returning just the $dirs. # On VMS and AmigaOS my $dirs = dirname($path); When using Unix or MSDOS syntax this emulates the C<dirname(1)> shell function which is subtly different from how C<fileparse()> works. It returns all but the last level of a file path even if the last level is clearly a directory. In effect, it is not returning the directory portion but simply the path one level up acting like C<chop()> for file paths. Also unlike C<fileparse()>, C<dirname()> does not include a trailing slash on its returned path. # returns /foo/bar. fileparse() would return /foo/bar/ dirname("/foo/bar/baz"); # also returns /foo/bar despite the fact that baz is clearly a # directory. fileparse() would return /foo/bar/baz/ dirname("/foo/bar/baz/"); # returns '.'. fileparse() would return 'foo/' dirname("foo/"); Under VMS, if there is no directory information in the $path, then the current default device and directory is used. =cut sub dirname { my $path = shift; my($type) = $Fileparse_fstype; if( $type eq 'VMS' and $path =~ m{/} ) { # Parse as Unix local($File::Basename::Fileparse_fstype) = ''; return dirname($path); } my($basename, $dirname) = fileparse($path); if ($type eq 'VMS') { $dirname ||= $ENV{DEFAULT}; } elsif ($type eq 'MacOS') { if( !length($basename) && $dirname !~ /^[^:]+:\z/) { _strip_trailing_sep($dirname); ($basename,$dirname) = fileparse $dirname; } $dirname .= ":" unless $dirname =~ /:\z/; } elsif (grep { $type eq $_ } qw(MSDOS DOS MSWin32 OS2)) { _strip_trailing_sep($dirname); unless( length($basename) ) { ($basename,$dirname) = fileparse $dirname; _strip_trailing_sep($dirname); } } elsif ($type eq 'AmigaOS') { if ( $dirname =~ /:\z/) { return $dirname } chop $dirname; $dirname =~ s{[^:/]+\z}{} unless length($basename); } else { _strip_trailing_sep($dirname); unless( length($basename) ) { ($basename,$dirname) = fileparse $dirname; _strip_trailing_sep($dirname); } } $dirname; } # Strip the trailing path separator. sub _strip_trailing_sep { my $type = $Fileparse_fstype; if ($type eq 'MacOS') { $_[0] =~ s/([^:]):\z/$1/s; } elsif (grep { $type eq $_ } qw(MSDOS DOS MSWin32 OS2)) { $_[0] =~ s/([^:])[\\\/]*\z/$1/; } else { $_[0] =~ s{(.)/*\z}{$1}s; } } =item C<fileparse_set_fstype> X<filesystem> my $type = fileparse_set_fstype(); my $previous_type = fileparse_set_fstype($type); Normally File::Basename will assume a file path type native to your current operating system (ie. /foo/bar style on Unix, \foo\bar on Windows, etc...). With this function you can override that assumption. Valid $types are "MacOS", "VMS", "AmigaOS", "OS2", "RISCOS", "MSWin32", "DOS" (also "MSDOS" for backwards bug compatibility), "Epoc" and "Unix" (all case-insensitive). If an unrecognized $type is given "Unix" will be assumed. If you've selected VMS syntax, and the file specification you pass to one of these routines contains a "/", they assume you are using Unix emulation and apply the Unix syntax rules instead, for that function call only. =back =cut BEGIN { my @Ignore_Case = qw(MacOS VMS AmigaOS OS2 RISCOS MSWin32 MSDOS DOS Epoc); my @Types = (@Ignore_Case, qw(Unix)); sub fileparse_set_fstype { my $old = $Fileparse_fstype; if (@_) { my $new_type = shift; $Fileparse_fstype = 'Unix'; # default foreach my $type (@Types) { $Fileparse_fstype = $type if $new_type =~ /^$type/i; } $Fileparse_igncase = (grep $Fileparse_fstype eq $_, @Ignore_Case) ? 1 : 0; } return $old; } } 1; =head1 SEE ALSO L<dirname(1)>, L<basename(1)>, L<File::Spec> Find.pm 0000644 00000102144 15204070641 0005763 0 ustar 00 package File::Find; use 5.006; use strict; use warnings; use warnings::register; our $VERSION = '1.34'; require Exporter; require Cwd; our @ISA = qw(Exporter); our @EXPORT = qw(find finddepth); use strict; my $Is_VMS; my $Is_Win32; require File::Basename; require File::Spec; # Should ideally be my() not our() but local() currently # refuses to operate on lexicals our %SLnkSeen; our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, $pre_process, $post_process, $dangling_symlinks); sub contract_name { my ($cdir,$fn) = @_; return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; $cdir = substr($cdir,0,rindex($cdir,'/')+1); $fn =~ s|^\./||; my $abs_name= $cdir . $fn; if (substr($fn,0,3) eq '../') { 1 while $abs_name =~ s!/[^/]*/\.\./+!/!; } return $abs_name; } sub PathCombine($$) { my ($Base,$Name) = @_; my $AbsName; if (substr($Name,0,1) eq '/') { $AbsName= $Name; } else { $AbsName= contract_name($Base,$Name); } # (simple) check for recursion my $newlen= length($AbsName); if ($newlen <= length($Base)) { if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') && $AbsName eq substr($Base,0,$newlen)) { return undef; } } return $AbsName; } sub Follow_SymLink($) { my ($AbsName) = @_; my ($NewName,$DEV, $INO); ($DEV, $INO)= lstat $AbsName; while (-l _) { if ($SLnkSeen{$DEV, $INO}++) { if ($follow_skip < 2) { die "$AbsName is encountered a second time"; } else { return undef; } } $NewName= PathCombine($AbsName, readlink($AbsName)); unless(defined $NewName) { if ($follow_skip < 2) { die "$AbsName is a recursive symbolic link"; } else { return undef; } } else { $AbsName= $NewName; } ($DEV, $INO) = lstat($AbsName); return undef unless defined $DEV; # dangling symbolic link } if ($full_check && defined $DEV && $SLnkSeen{$DEV, $INO}++) { if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { die "$AbsName encountered a second time"; } else { return undef; } } return $AbsName; } our($dir, $name, $fullname, $prune); sub _find_dir_symlnk($$$); sub _find_dir($$$); # check whether or not a scalar variable is tainted # (code straight from the Camel, 3rd ed., page 561) sub is_tainted_pp { my $arg = shift; my $nada = substr($arg, 0, 0); # zero-length local $@; eval { eval "# $nada" }; return length($@) != 0; } sub _find_opt { my $wanted = shift; return unless @_; die "invalid top directory" unless defined $_[0]; # This function must local()ize everything because callbacks may # call find() or finddepth() local %SLnkSeen; local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, $pre_process, $post_process, $dangling_symlinks); local($dir, $name, $fullname, $prune); local *_ = \my $a; my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::getcwd(); if ($Is_VMS) { # VMS returns this by default in VMS format which just doesn't # work for the rest of this module. $cwd = VMS::Filespec::unixpath($cwd); # Apparently this is not expected to have a trailing space. # To attempt to make VMS/UNIX conversions mostly reversible, # a trailing slash is needed. The run-time functions ignore the # resulting double slash, but it causes the perl tests to fail. $cwd =~ s#/\z##; # This comes up in upper case now, but should be lower. # In the future this could be exact case, no need to change. } my $cwd_untainted = $cwd; my $check_t_cwd = 1; $wanted_callback = $wanted->{wanted}; $bydepth = $wanted->{bydepth}; $pre_process = $wanted->{preprocess}; $post_process = $wanted->{postprocess}; $no_chdir = $wanted->{no_chdir}; $full_check = $Is_Win32 ? 0 : $wanted->{follow}; $follow = $Is_Win32 ? 0 : $full_check || $wanted->{follow_fast}; $follow_skip = $wanted->{follow_skip}; $untaint = $wanted->{untaint}; $untaint_pat = $wanted->{untaint_pattern}; $untaint_skip = $wanted->{untaint_skip}; $dangling_symlinks = $wanted->{dangling_symlinks}; # for compatibility reasons (find.pl, find2perl) local our ($topdir, $topdev, $topino, $topmode, $topnlink); # a symbolic link to a directory doesn't increase the link count $avoid_nlink = $follow || $File::Find::dont_use_nlink; my ($abs_dir, $Is_Dir); Proc_Top_Item: foreach my $TOP (@_) { my $top_item = $TOP; $top_item = VMS::Filespec::unixify($top_item) if $Is_VMS; ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; if ($Is_Win32) { $top_item =~ s|[/\\]\z|| unless $top_item =~ m{^(?:\w:)?[/\\]$}; } else { $top_item =~ s|/\z|| unless $top_item eq '/'; } $Is_Dir= 0; if ($follow) { if (substr($top_item,0,1) eq '/') { $abs_dir = $top_item; } elsif ($top_item eq $File::Find::current_dir) { $abs_dir = $cwd; } else { # care about any ../ $top_item =~ s/\.dir\z//i if $Is_VMS; $abs_dir = contract_name("$cwd/",$top_item); } $abs_dir= Follow_SymLink($abs_dir); unless (defined $abs_dir) { if ($dangling_symlinks) { if (ref $dangling_symlinks eq 'CODE') { $dangling_symlinks->($top_item, $cwd); } else { warnings::warnif "$top_item is a dangling symbolic link\n"; } } next Proc_Top_Item; } if (-d _) { $top_item =~ s/\.dir\z//i if $Is_VMS; _find_dir_symlnk($wanted, $abs_dir, $top_item); $Is_Dir= 1; } } else { # no follow $topdir = $top_item; unless (defined $topnlink) { warnings::warnif "Can't stat $top_item: $!\n"; next Proc_Top_Item; } if (-d _) { $top_item =~ s/\.dir\z//i if $Is_VMS; _find_dir($wanted, $top_item, $topnlink); $Is_Dir= 1; } else { $abs_dir= $top_item; } } unless ($Is_Dir) { unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { ($dir,$_) = ('./', $top_item); } $abs_dir = $dir; if (( $untaint ) && (is_tainted($dir) )) { ( $abs_dir ) = $dir =~ m|$untaint_pat|; unless (defined $abs_dir) { if ($untaint_skip == 0) { die "directory $dir is still tainted"; } else { next Proc_Top_Item; } } } unless ($no_chdir || chdir $abs_dir) { warnings::warnif "Couldn't chdir $abs_dir: $!\n"; next Proc_Top_Item; } $name = $abs_dir . $_; # $File::Find::name $_ = $name if $no_chdir; { $wanted_callback->() }; # protect against wild "next" } unless ( $no_chdir ) { if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; unless (defined $cwd_untainted) { die "insecure cwd in find(depth)"; } $check_t_cwd = 0; } unless (chdir $cwd_untainted) { die "Can't cd to $cwd: $!\n"; } } } } # API: # $wanted # $p_dir : "parent directory" # $nlink : what came back from the stat # preconditions: # chdir (if not no_chdir) to dir sub _find_dir($$$) { my ($wanted, $p_dir, $nlink) = @_; my ($CdLvl,$Level) = (0,0); my @Stack; my @filenames; my ($subcount,$sub_nlink); my $SE= []; my $dir_name= $p_dir; my $dir_pref; my $dir_rel = $File::Find::current_dir; my $tainted = 0; my $no_nlink; if ($Is_Win32) { $dir_pref = ($p_dir =~ m{^(?:\w:[/\\]?|[/\\])$} ? $p_dir : "$p_dir/" ); } elsif ($Is_VMS) { # VMS is returning trailing .dir on directories # and trailing . on files and symbolic links # in UNIX syntax. # $p_dir =~ s/\.(dir)?$//i unless $p_dir eq '.'; $dir_pref = ($p_dir =~ m/[\]>]+$/ ? $p_dir : "$p_dir/" ); } else { $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); } local ($dir, $name, $prune, *DIR); unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { my $udir = $p_dir; if (( $untaint ) && (is_tainted($p_dir) )) { ( $udir ) = $p_dir =~ m|$untaint_pat|; unless (defined $udir) { if ($untaint_skip == 0) { die "directory $p_dir is still tainted"; } else { return; } } } unless (chdir ($Is_VMS && $udir !~ /[\/\[<]+/ ? "./$udir" : $udir)) { warnings::warnif "Can't cd to $udir: $!\n"; return; } } # push the starting directory push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; while (defined $SE) { unless ($bydepth) { $dir= $p_dir; # $File::Find::dir $name= $dir_name; # $File::Find::name $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ # prune may happen here $prune= 0; { $wanted_callback->() }; # protect against wild "next" next if $prune; } # change to that directory unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { my $udir= $dir_rel; if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { ( $udir ) = $dir_rel =~ m|$untaint_pat|; unless (defined $udir) { if ($untaint_skip == 0) { die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; } else { # $untaint_skip == 1 next; } } } unless (chdir ($Is_VMS && $udir !~ /[\/\[<]+/ ? "./$udir" : $udir)) { warnings::warnif "Can't cd to (" . ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n"; next; } $CdLvl++; } $dir= $dir_name; # $File::Find::dir # Get the list of files in the current directory. unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { warnings::warnif "Can't opendir($dir_name): $!\n"; next; } @filenames = readdir DIR; closedir(DIR); @filenames = $pre_process->(@filenames) if $pre_process; push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; # default: use whatever was specified # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back) $no_nlink = $avoid_nlink; # if dir has wrong nlink count, force switch to slower stat method $no_nlink = 1 if ($nlink < 2); if ($nlink == 2 && !$no_nlink) { # This dir has no subdirectories. for my $FN (@filenames) { if ($Is_VMS) { # Big hammer here - Compensate for VMS trailing . and .dir # No win situation until this is changed, but this # will handle the majority of the cases with breaking the fewest $FN =~ s/\.dir\z//i; $FN =~ s#\.$## if ($FN ne '.'); } next if $FN =~ $File::Find::skip_pattern; $name = $dir_pref . $FN; # $File::Find::name $_ = ($no_chdir ? $name : $FN); # $_ { $wanted_callback->() }; # protect against wild "next" } } else { # This dir has subdirectories. $subcount = $nlink - 2; # HACK: insert directories at this position, so as to preserve # the user pre-processed ordering of files (thus ensuring # directory traversal is in user sorted order, not at random). my $stack_top = @Stack; for my $FN (@filenames) { next if $FN =~ $File::Find::skip_pattern; if ($subcount > 0 || $no_nlink) { # Seen all the subdirs? # check for directoriness. # stat is faster for a file in the current directory $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; if (-d _) { --$subcount; $FN =~ s/\.dir\z//i if $Is_VMS; # HACK: replace push to preserve dir traversal order #push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; splice @Stack, $stack_top, 0, [$CdLvl,$dir_name,$FN,$sub_nlink]; } else { $name = $dir_pref . $FN; # $File::Find::name $_= ($no_chdir ? $name : $FN); # $_ { $wanted_callback->() }; # protect against wild "next" } } else { $name = $dir_pref . $FN; # $File::Find::name $_= ($no_chdir ? $name : $FN); # $_ { $wanted_callback->() }; # protect against wild "next" } } } } continue { while ( defined ($SE = pop @Stack) ) { ($Level, $p_dir, $dir_rel, $nlink) = @$SE; if ($CdLvl > $Level && !$no_chdir) { my $tmp; if ($Is_VMS) { $tmp = '[' . ('-' x ($CdLvl-$Level)) . ']'; } else { $tmp = join('/',('..') x ($CdLvl-$Level)); } die "Can't cd to $tmp from $dir_name: $!" unless chdir ($tmp); $CdLvl = $Level; } if ($Is_Win32) { $dir_name = ($p_dir =~ m{^(?:\w:[/\\]?|[/\\])$} ? "$p_dir$dir_rel" : "$p_dir/$dir_rel"); $dir_pref = "$dir_name/"; } elsif ($^O eq 'VMS') { if ($p_dir =~ m/[\]>]+$/) { $dir_name = $p_dir; $dir_name =~ s/([\]>]+)$/.$dir_rel$1/; $dir_pref = $dir_name; } else { $dir_name = "$p_dir/$dir_rel"; $dir_pref = "$dir_name/"; } } else { $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); $dir_pref = "$dir_name/"; } if ( $nlink == -2 ) { $name = $dir = $p_dir; # $File::Find::name / dir $_ = $File::Find::current_dir; $post_process->(); # End-of-directory processing } elsif ( $nlink < 0 ) { # must be finddepth, report dirname now $name = $dir_name; if ( substr($name,-2) eq '/.' ) { substr($name, length($name) == 2 ? -1 : -2) = ''; } $dir = $p_dir; $_ = ($no_chdir ? $dir_name : $dir_rel ); if ( substr($_,-2) eq '/.' ) { substr($_, length($_) == 2 ? -1 : -2) = ''; } { $wanted_callback->() }; # protect against wild "next" } else { push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; last; } } } } # API: # $wanted # $dir_loc : absolute location of a dir # $p_dir : "parent directory" # preconditions: # chdir (if not no_chdir) to dir sub _find_dir_symlnk($$$) { my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory my @Stack; my @filenames; my $new_loc; my $updir_loc = $dir_loc; # untainted parent directory my $SE = []; my $dir_name = $p_dir; my $dir_pref; my $loc_pref; my $dir_rel = $File::Find::current_dir; my $byd_flag; # flag for pending stack entry if $bydepth my $tainted = 0; my $ok = 1; $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); local ($dir, $name, $fullname, $prune, *DIR); unless ($no_chdir) { # untaint the topdir if (( $untaint ) && (is_tainted($dir_loc) )) { ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted # once untainted, $updir_loc is pushed on the stack (as parent directory); # hence, we don't need to untaint the parent directory every time we chdir # to it later unless (defined $updir_loc) { if ($untaint_skip == 0) { die "directory $dir_loc is still tainted"; } else { return; } } } $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); unless ($ok) { warnings::warnif "Can't cd to $updir_loc: $!\n"; return; } } push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; while (defined $SE) { unless ($bydepth) { # change (back) to parent directory (always untainted) unless ($no_chdir) { unless (chdir $updir_loc) { warnings::warnif "Can't cd to $updir_loc: $!\n"; next; } } $dir= $p_dir; # $File::Find::dir $name= $dir_name; # $File::Find::name $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ $fullname= $dir_loc; # $File::Find::fullname # prune may happen here $prune= 0; lstat($_); # make sure file tests with '_' work { $wanted_callback->() }; # protect against wild "next" next if $prune; } # change to that directory unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { $updir_loc = $dir_loc; if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; unless (defined $updir_loc) { if ($untaint_skip == 0) { die "directory $dir_loc is still tainted"; } else { next; } } } unless (chdir $updir_loc) { warnings::warnif "Can't cd to $updir_loc: $!\n"; next; } } $dir = $dir_name; # $File::Find::dir # Get the list of files in the current directory. unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { warnings::warnif "Can't opendir($dir_loc): $!\n"; next; } @filenames = readdir DIR; closedir(DIR); for my $FN (@filenames) { if ($Is_VMS) { # Big hammer here - Compensate for VMS trailing . and .dir # No win situation until this is changed, but this # will handle the majority of the cases with breaking the fewest. $FN =~ s/\.dir\z//i; $FN =~ s#\.$## if ($FN ne '.'); } next if $FN =~ $File::Find::skip_pattern; # follow symbolic links / do an lstat $new_loc = Follow_SymLink($loc_pref.$FN); # ignore if invalid symlink unless (defined $new_loc) { if (!defined -l _ && $dangling_symlinks) { $fullname = undef; if (ref $dangling_symlinks eq 'CODE') { $dangling_symlinks->($FN, $dir_pref); } else { warnings::warnif "$dir_pref$FN is a dangling symbolic link\n"; } } else { $fullname = $loc_pref . $FN; } $name = $dir_pref . $FN; $_ = ($no_chdir ? $name : $FN); { $wanted_callback->() }; next; } if (-d _) { if ($Is_VMS) { $FN =~ s/\.dir\z//i; $FN =~ s#\.$## if ($FN ne '.'); $new_loc =~ s/\.dir\z//i; $new_loc =~ s#\.$## if ($new_loc ne '.'); } push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; } else { $fullname = $new_loc; # $File::Find::fullname $name = $dir_pref . $FN; # $File::Find::name $_ = ($no_chdir ? $name : $FN); # $_ { $wanted_callback->() }; # protect against wild "next" } } } continue { while (defined($SE = pop @Stack)) { ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); $dir_pref = "$dir_name/"; $loc_pref = "$dir_loc/"; if ( $byd_flag < 0 ) { # must be finddepth, report dirname now unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted warnings::warnif "Can't cd to $updir_loc: $!\n"; next; } } $fullname = $dir_loc; # $File::Find::fullname $name = $dir_name; # $File::Find::name if ( substr($name,-2) eq '/.' ) { substr($name, length($name) == 2 ? -1 : -2) = ''; # $File::Find::name } $dir = $p_dir; # $File::Find::dir $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ if ( substr($_,-2) eq '/.' ) { substr($_, length($_) == 2 ? -1 : -2) = ''; } lstat($_); # make sure file tests with '_' work { $wanted_callback->() }; # protect against wild "next" } else { push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; last; } } } } sub wrap_wanted { my $wanted = shift; if ( ref($wanted) eq 'HASH' ) { # RT #122547 my %valid_options = map {$_ => 1} qw( wanted bydepth preprocess postprocess follow follow_fast follow_skip dangling_symlinks no_chdir untaint untaint_pattern untaint_skip ); my @invalid_options = (); for my $v (keys %{$wanted}) { push @invalid_options, $v unless exists $valid_options{$v}; } warn "Invalid option(s): @invalid_options" if @invalid_options; unless( exists $wanted->{wanted} and ref( $wanted->{wanted} ) eq 'CODE' ) { die 'no &wanted subroutine given'; } if ( $wanted->{follow} || $wanted->{follow_fast}) { $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; } if ( $wanted->{untaint} ) { $wanted->{untaint_pattern} = $File::Find::untaint_pattern unless defined $wanted->{untaint_pattern}; $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; } return $wanted; } elsif( ref( $wanted ) eq 'CODE' ) { return { wanted => $wanted }; } else { die 'no &wanted subroutine given'; } } sub find { my $wanted = shift; _find_opt(wrap_wanted($wanted), @_); } sub finddepth { my $wanted = wrap_wanted(shift); $wanted->{bydepth} = 1; _find_opt($wanted, @_); } # default $File::Find::skip_pattern = qr/^\.{1,2}\z/; $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; # These are hard-coded for now, but may move to hint files. if ($^O eq 'VMS') { $Is_VMS = 1; $File::Find::dont_use_nlink = 1; } elsif ($^O eq 'MSWin32') { $Is_Win32 = 1; } # this _should_ work properly on all platforms # where File::Find can be expected to work $File::Find::current_dir = File::Spec->curdir || '.'; $File::Find::dont_use_nlink = 1 if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $Is_Win32 || $^O eq 'interix' || $^O eq 'cygwin' || $^O eq 'qnx' || $^O eq 'nto'; # Set dont_use_nlink in your hint file if your system's stat doesn't # report the number of links in a directory as an indication # of the number of files. # See e.g. hints/haiku.sh for Haiku. unless ($File::Find::dont_use_nlink) { require Config; $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); } # We need a function that checks if a scalar is tainted. Either use the # Scalar::Util module's tainted() function or our (slower) pure Perl # fallback is_tainted_pp() { local $@; eval { require Scalar::Util }; *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; } 1; __END__ =head1 NAME File::Find - Traverse a directory tree. =head1 SYNOPSIS use File::Find; find(\&wanted, @directories_to_search); sub wanted { ... } use File::Find; finddepth(\&wanted, @directories_to_search); sub wanted { ... } use File::Find; find({ wanted => \&process, follow => 1 }, '.'); =head1 DESCRIPTION These are functions for searching through directory trees doing work on each file found similar to the Unix I<find> command. File::Find exports two functions, C<find> and C<finddepth>. They work similarly but have subtle differences. =over 4 =item B<find> find(\&wanted, @directories); find(\%options, @directories); C<find()> does a depth-first search over the given C<@directories> in the order they are given. For each file or directory found, it calls the C<&wanted> subroutine. (See below for details on how to use the C<&wanted> function). Additionally, for each directory found, it will C<chdir()> into that directory and continue the search, invoking the C<&wanted> function on each file or subdirectory in the directory. =item B<finddepth> finddepth(\&wanted, @directories); finddepth(\%options, @directories); C<finddepth()> works just like C<find()> except that it invokes the C<&wanted> function for a directory I<after> invoking it for the directory's contents. It does a postorder traversal instead of a preorder traversal, working from the bottom of the directory tree up where C<find()> works from the top of the tree down. =back =head2 %options The first argument to C<find()> is either a code reference to your C<&wanted> function, or a hash reference describing the operations to be performed for each file. The code reference is described in L</The wanted function> below. Here are the possible keys for the hash: =over 3 =item C<wanted> The value should be a code reference. This code reference is described in L</The wanted function> below. The C<&wanted> subroutine is mandatory. =item C<bydepth> Reports the name of a directory only AFTER all its entries have been reported. Entry point C<finddepth()> is a shortcut for specifying C<< { bydepth => 1 } >> in the first argument of C<find()>. =item C<preprocess> The value should be a code reference. This code reference is used to preprocess the current directory. The name of the currently processed directory is in C<$File::Find::dir>. Your preprocessing function is called after C<readdir()>, but before the loop that calls the C<wanted()> function. It is called with a list of strings (actually file/directory names) and is expected to return a list of strings. The code can be used to sort the file/directory names alphabetically, numerically, or to filter out directory entries based on their name alone. When I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. =item C<postprocess> The value should be a code reference. It is invoked just before leaving the currently processed directory. It is called in void context with no arguments. The name of the current directory is in C<$File::Find::dir>. This hook is handy for summarizing a directory, such as calculating its disk usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a no-op. =item C<follow> Causes symbolic links to be followed. Since directory trees with symbolic links (followed) may contain files more than once and may even have cycles, a hash has to be built up with an entry for each file. This might be expensive both in space and time for a large directory tree. See L</follow_fast> and L</follow_skip> below. If either I<follow> or I<follow_fast> is in effect: =over 6 =item * It is guaranteed that an I<lstat> has been called before the user's C<wanted()> function is called. This enables fast file checks involving C<_>. Note that this guarantee no longer holds if I<follow> or I<follow_fast> are not set. =item * There is a variable C<$File::Find::fullname> which holds the absolute pathname of the file with all symbolic links resolved. If the link is a dangling symbolic link, then fullname will be set to C<undef>. =back This is a no-op on Win32. =item C<follow_fast> This is similar to I<follow> except that it may report some files more than once. It does detect cycles, however. Since only symbolic links have to be hashed, this is much cheaper both in space and time. If processing a file more than once (by the user's C<wanted()> function) is worse than just taking time, the option I<follow> should be used. This is also a no-op on Win32. =item C<follow_skip> C<follow_skip==1>, which is the default, causes all files which are neither directories nor symbolic links to be ignored if they are about to be processed a second time. If a directory or a symbolic link are about to be processed a second time, File::Find dies. C<follow_skip==0> causes File::Find to die if any file is about to be processed a second time. C<follow_skip==2> causes File::Find to ignore any duplicate files and directories but to proceed normally otherwise. =item C<dangling_symlinks> Specifies what to do with symbolic links whose target doesn't exist. If true and a code reference, will be called with the symbolic link name and the directory it lives in as arguments. Otherwise, if true and warnings are on, a warning of the form C<"symbolic_link_name is a dangling symbolic link\n"> will be issued. If false, the dangling symbolic link will be silently ignored. =item C<no_chdir> Does not C<chdir()> to each directory as it recurses. The C<wanted()> function will need to be aware of this, of course. In this case, C<$_> will be the same as C<$File::Find::name>. =item C<untaint> If find is used in L<taint-mode|perlsec/Taint mode> (-T command line switch or if EUID != UID or if EGID != GID), then internally directory names have to be untainted before they can be C<chdir>'d to. Therefore they are checked against a regular expression I<untaint_pattern>. Note that all names passed to the user's C<wanted()> function are still tainted. If this option is used while not in taint-mode, C<untaint> is a no-op. =item C<untaint_pattern> See above. This should be set using the C<qr> quoting operator. The default is set to C<qr|^([-+@\w./]+)$|>. Note that the parentheses are vital. =item C<untaint_skip> If set, a directory which fails the I<untaint_pattern> is skipped, including all its sub-directories. The default is to C<die> in such a case. =back =head2 The wanted function The C<wanted()> function does whatever verifications you want on each file and directory. Note that despite its name, the C<wanted()> function is a generic callback function, and does B<not> tell File::Find if a file is "wanted" or not. In fact, its return value is ignored. The wanted function takes no arguments but rather does its work through a collection of variables. =over 4 =item C<$File::Find::dir> is the current directory name, =item C<$_> is the current filename within that directory =item C<$File::Find::name> is the complete pathname to the file. =back The above variables have all been localized and may be changed without affecting data outside of the wanted function. For example, when examining the file F</some/path/foo.ext> you will have: $File::Find::dir = /some/path/ $_ = foo.ext $File::Find::name = /some/path/foo.ext You are chdir()'d to C<$File::Find::dir> when the function is called, unless C<no_chdir> was specified. Note that when changing to directories is in effect, the root directory (F</>) is a somewhat special case inasmuch as the concatenation of C<$File::Find::dir>, C<'/'> and C<$_> is not literally equal to C<$File::Find::name>. The table below summarizes all variants: $File::Find::name $File::Find::dir $_ default / / . no_chdir=>0 /etc / etc /etc/x /etc x no_chdir=>1 / / / /etc / /etc /etc/x /etc /etc/x When C<follow> or C<follow_fast> are in effect, there is also a C<$File::Find::fullname>. The function may set C<$File::Find::prune> to prune the tree unless C<bydepth> was specified. Unless C<follow> or C<follow_fast> is specified, for compatibility reasons (find.pl, find2perl) there are in addition the following globals available: C<$File::Find::topdir>, C<$File::Find::topdev>, C<$File::Find::topino>, C<$File::Find::topmode> and C<$File::Find::topnlink>. This library is useful for the C<find2perl> tool (distributed as part of the App-find2perl CPAN distribution), which when fed, find2perl / -name .nfs\* -mtime +7 \ -exec rm -f {} \; -o -fstype nfs -prune produces something like: sub wanted { /^\.nfs.*\z/s && (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && int(-M _) > 7 && unlink($_) || ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && $dev < 0 && ($File::Find::prune = 1); } Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical filehandle that caches the information from the preceding C<stat()>, C<lstat()>, or filetest. Here's another interesting wanted function. It will find all symbolic links that don't resolve: sub wanted { -l && !-e && print "bogus link: $File::Find::name\n"; } Note that you may mix directories and (non-directory) files in the list of directories to be searched by the C<wanted()> function. find(\&wanted, "./foo", "./bar", "./baz/epsilon"); In the example above, no file in F<./baz/> other than F<./baz/epsilon> will be evaluated by C<wanted()>. See also the script C<pfind> on CPAN for a nice application of this module. =head1 WARNINGS If you run your program with the C<-w> switch, or if you use the C<warnings> pragma, File::Find will report warnings for several weird situations. You can disable these warnings by putting the statement no warnings 'File::Find'; in the appropriate scope. See L<warnings> for more info about lexical warnings. =head1 CAVEAT =over 2 =item $dont_use_nlink You can set the variable C<$File::Find::dont_use_nlink> to 1 if you want to force File::Find to always stat directories. This was used for file systems that do not have an C<nlink> count matching the number of sub-directories. Examples are ISO-9660 (CD-ROM), AFS, HPFS (OS/2 file system), FAT (DOS file system) and a couple of others. You shouldn't need to set this variable, since File::Find should now detect such file systems on-the-fly and switch itself to using stat. This works even for parts of your file system, like a mounted CD-ROM. If you do set C<$File::Find::dont_use_nlink> to 1, you will notice slow-downs. =item symlinks Be aware that the option to follow symbolic links can be dangerous. Depending on the structure of the directory tree (including symbolic links to directories) you might traverse a given (physical) directory more than once (only if C<follow_fast> is in effect). Furthermore, deleting or changing files in a symbolically linked directory might cause very unpleasant surprises, since you delete or change files in an unknown directory. =back =head1 BUGS AND CAVEATS Despite the name of the C<finddepth()> function, both C<find()> and C<finddepth()> perform a depth-first search of the directory hierarchy. =head1 HISTORY File::Find used to produce incorrect results if called recursively. During the development of perl 5.8 this bug was fixed. The first fixed version of File::Find was 1.01. =head1 SEE ALSO L<find(1)>, find2perl. =cut Compare.pm 0000644 00000010354 15204070641 0006472 0 ustar 00 package File::Compare; use 5.006; use strict; use warnings; our($VERSION, @ISA, @EXPORT, @EXPORT_OK, $Too_Big); require Exporter; $VERSION = '1.1006'; @ISA = qw(Exporter); @EXPORT = qw(compare); @EXPORT_OK = qw(cmp compare_text); $Too_Big = 1024 * 1024 * 2; sub croak { require Carp; goto &Carp::croak; } sub compare { croak("Usage: compare( file1, file2 [, buffersize]) ") unless(@_ == 2 || @_ == 3); my ($from,$to,$size) = @_; my $text_mode = defined($size) && (ref($size) eq 'CODE' || $size < 0); my ($fromsize,$closefrom,$closeto); local (*FROM, *TO); croak("from undefined") unless (defined $from); croak("to undefined") unless (defined $to); if (ref($from) && (UNIVERSAL::isa($from,'GLOB') || UNIVERSAL::isa($from,'IO::Handle'))) { *FROM = *$from; } elsif (ref(\$from) eq 'GLOB') { *FROM = $from; } else { open(FROM,"<",$from) or goto fail_open1; unless ($text_mode) { binmode FROM; $fromsize = -s FROM; } $closefrom = 1; } if (ref($to) && (UNIVERSAL::isa($to,'GLOB') || UNIVERSAL::isa($to,'IO::Handle'))) { *TO = *$to; } elsif (ref(\$to) eq 'GLOB') { *TO = $to; } else { open(TO,"<",$to) or goto fail_open2; binmode TO unless $text_mode; $closeto = 1; } if (!$text_mode && $closefrom && $closeto) { # If both are opened files we know they differ if their size differ goto fail_inner if $fromsize != -s TO; } if ($text_mode) { local $/ = "\n"; my ($fline,$tline); while (defined($fline = <FROM>)) { goto fail_inner unless defined($tline = <TO>); if (ref $size) { # $size contains ref to comparison function goto fail_inner if &$size($fline, $tline); } else { goto fail_inner if $fline ne $tline; } } goto fail_inner if defined($tline = <TO>); } else { unless (defined($size) && $size > 0) { $size = $fromsize || -s TO || 0; $size = 1024 if $size < 512; $size = $Too_Big if $size > $Too_Big; } my ($fr,$tr,$fbuf,$tbuf); $fbuf = $tbuf = ''; while(defined($fr = read(FROM,$fbuf,$size)) && $fr > 0) { unless (defined($tr = read(TO,$tbuf,$fr)) && $tbuf eq $fbuf) { goto fail_inner; } } goto fail_inner if defined($tr = read(TO,$tbuf,$size)) && $tr > 0; } close(TO) || goto fail_open2 if $closeto; close(FROM) || goto fail_open1 if $closefrom; return 0; # All of these contortions try to preserve error messages... fail_inner: close(TO) || goto fail_open2 if $closeto; close(FROM) || goto fail_open1 if $closefrom; return 1; fail_open2: if ($closefrom) { my $status = $!; $! = 0; close FROM; $! = $status unless $!; } fail_open1: return -1; } sub cmp; *cmp = \&compare; sub compare_text { my ($from,$to,$cmp) = @_; croak("Usage: compare_text( file1, file2 [, cmp-function])") unless @_ == 2 || @_ == 3; croak("Third arg to compare_text() function must be a code reference") if @_ == 3 && ref($cmp) ne 'CODE'; # Using a negative buffer size puts compare into text_mode too $cmp = -1 unless defined $cmp; compare($from, $to, $cmp); } 1; __END__ =head1 NAME File::Compare - Compare files or filehandles =head1 SYNOPSIS use File::Compare; if (compare("file1","file2") == 0) { print "They're equal\n"; } =head1 DESCRIPTION The File::Compare::compare function compares the contents of two sources, each of which can be a file or a file handle. It is exported from File::Compare by default. File::Compare::cmp is a synonym for File::Compare::compare. It is exported from File::Compare only by request. File::Compare::compare_text does a line by line comparison of the two files. It stops as soon as a difference is detected. compare_text() accepts an optional third argument: This must be a CODE reference to a line comparison function, which returns 0 when both lines are considered equal. For example: compare_text($file1, $file2) is basically equivalent to compare_text($file1, $file2, sub {$_[0] ne $_[1]} ) =head1 RETURN File::Compare::compare and its sibling functions return 0 if the files are equal, 1 if the files are unequal, or -1 if an error was encountered. =head1 AUTHOR File::Compare was written by Nick Ing-Simmons. Its original documentation was written by Chip Salzenberg. =cut
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