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[perl5.git] / lib / ExtUtils / Install.pm
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1package ExtUtils::Install;
2
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3$VERSION = substr q$Revision: 1.28 $, 10;
4# $Date: 1998/01/25 07:08:24 $
f1387719 5
08ad6bd5 6use Exporter;
08ad6bd5 7use Carp ();
c3648e42 8use Config qw(%Config);
f1387719 9use vars qw(@ISA @EXPORT $VERSION);
4b6d56d3 10@ISA = ('Exporter');
c3648e42 11@EXPORT = ('install','uninstall','pm_to_blib', 'install_default');
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12$Is_VMS = $^O eq 'VMS';
13
39e571d4 14my $splitchar = $^O eq 'VMS' ? '|' : ($^O eq 'os2' || $^O eq 'dos') ? ';' : ':';
d6abf24b 15my @PERL_ENV_LIB = split $splitchar, defined $ENV{'PERL5LIB'} ? $ENV{'PERL5LIB'} : $ENV{'PERLLIB'} || '';
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16my $Inc_uninstall_warn_handler;
17
08ad6bd5 18#use vars qw( @EXPORT @ISA $Is_VMS );
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19#use strict;
20
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21sub forceunlink {
22 chmod 0666, $_[0];
23 unlink $_[0] or Carp::croak("Cannot forceunlink $_[0]: $!")
24}
08ad6bd5 25
4b6d56d3 26sub install {
f1387719 27 my($hash,$verbose,$nonono,$inc_uninstall) = @_;
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28 $verbose ||= 0;
29 $nonono ||= 0;
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30
31 use Cwd qw(cwd);
32 use ExtUtils::MakeMaker; # to implement a MY class
354f3b56 33 use ExtUtils::Packlist;
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34 use File::Basename qw(dirname);
35 use File::Copy qw(copy);
36 use File::Find qw(find);
37 use File::Path qw(mkpath);
fb73857a 38 use File::Compare qw(compare);
08ad6bd5 39
4b6d56d3 40 my(%hash) = %$hash;
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41 my(%pack, $dir, $warn_permissions);
42 my($packlist) = ExtUtils::Packlist->new();
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43 # -w doesn't work reliably on FAT dirs
44 $warn_permissions++ if $^O eq 'MSWin32';
354f3b56 45 local(*DIR);
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46 for (qw/read write/) {
47 $pack{$_}=$hash{$_};
48 delete $hash{$_};
49 }
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50 my($source_dir_or_file);
51 foreach $source_dir_or_file (sort keys %hash) {
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52 #Check if there are files, and if yes, look if the corresponding
53 #target directory is writable for us
08ad6bd5 54 opendir DIR, $source_dir_or_file or next;
f1387719 55 for (readdir DIR) {
4b6d56d3 56 next if $_ eq "." || $_ eq ".." || $_ eq ".exists";
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57 if (-w $hash{$source_dir_or_file} ||
58 mkpath($hash{$source_dir_or_file})) {
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59 last;
60 } else {
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61 warn "Warning: You do not have permissions to " .
62 "install into $hash{$source_dir_or_file}"
cee7b94a 63 unless $warn_permissions++;
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64 }
65 }
66 closedir DIR;
67 }
354f3b56 68 $packlist->read($pack{"read"}) if (-f $pack{"read"});
4b6d56d3 69 my $cwd = cwd();
4b6d56d3 70
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71 my($source);
72 MOD_INSTALL: foreach $source (sort keys %hash) {
73 #copy the tree to the target directory without altering
74 #timestamp and permission and remember for the .packlist
75 #file. The packlist file contains the absolute paths of the
76 #install locations. AFS users may call this a bug. We'll have
77 #to reconsider how to add the means to satisfy AFS users also.
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78
79 #October 1997: we want to install .pm files into archlib if
80 #there are any files in arch. So we depend on having ./blib/arch
81 #hardcoded here.
82 my $targetroot = $hash{$source};
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83 if ($source eq "blib/lib" and
84 exists $hash{"blib/arch"} and
85 directory_not_empty("blib/arch")) {
86 $targetroot = $hash{"blib/arch"};
dcc96bbd 87 print "Files found in blib/arch: installing files in blib/lib into architecture dependent library tree\n";
456e5c25 88 }
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89 chdir($source) or next;
90 find(sub {
91 my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
92 $atime,$mtime,$ctime,$blksize,$blocks) = stat;
93 return unless -f _;
94 return if $_ eq ".exists";
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95 my $targetdir = MY->catdir($targetroot,$File::Find::dir);
96 my $targetfile = MY->catfile($targetdir,$_);
4b6d56d3 97
f1387719 98 my $diff = 0;
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99 if ( -f $targetfile && -s _ == $size) {
100 # We have a good chance, we can skip this one
fb73857a 101 $diff = compare($_,$targetfile);
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102 } else {
103 print "$_ differs\n" if $verbose>1;
104 $diff++;
105 }
106
107 if ($diff){
08ad6bd5 108 if (-f $targetfile){
f1387719 109 forceunlink($targetfile) unless $nonono;
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110 } else {
111 mkpath($targetdir,0,0755) unless $nonono;
112 print "mkpath($targetdir,0,0755)\n" if $verbose>1;
113 }
4b6d56d3 114 copy($_,$targetfile) unless $nonono;
f1387719 115 print "Installing $targetfile\n";
08ad6bd5 116 utime($atime,$mtime + $Is_VMS,$targetfile) unless $nonono>1;
4b6d56d3 117 print "utime($atime,$mtime,$targetfile)\n" if $verbose>1;
f1387719 118 $mode = 0444 | ( $mode & 0111 ? 0111 : 0 );
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119 chmod $mode, $targetfile;
120 print "chmod($mode, $targetfile)\n" if $verbose>1;
121 } else {
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122 print "Skipping $targetfile (unchanged)\n" if $verbose;
123 }
124
125 if (! defined $inc_uninstall) { # it's called
126 } elsif ($inc_uninstall == 0){
127 inc_uninstall($_,$File::Find::dir,$verbose,1); # nonono set to 1
128 } else {
129 inc_uninstall($_,$File::Find::dir,$verbose,0); # nonono set to 0
4b6d56d3 130 }
354f3b56 131 $packlist->{$targetfile}++;
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132
133 }, ".");
08ad6bd5 134 chdir($cwd) or Carp::croak("Couldn't chdir to $cwd: $!");
4b6d56d3 135 }
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136 if ($pack{'write'}) {
137 $dir = dirname($pack{'write'});
138 mkpath($dir,0,0755);
139 print "Writing $pack{'write'}\n";
354f3b56 140 $packlist->write($pack{'write'});
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141 }
142}
143
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144sub directory_not_empty ($) {
145 my($dir) = @_;
146 my $files = 0;
147 find(sub {
148 return if $_ eq ".exists";
149 if (-f) {
150 $File::Find::prune++;
151 $files = 1;
152 }
153 }, $dir);
154 return $files;
155}
156
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157sub install_default {
158 @_ < 2 or die "install_default should be called with 0 or 1 argument";
159 my $FULLEXT = @_ ? shift : $ARGV[0];
160 defined $FULLEXT or die "Do not know to where to write install log";
161 my $INST_LIB = MM->catdir(MM->curdir,"blib","lib");
162 my $INST_ARCHLIB = MM->catdir(MM->curdir,"blib","arch");
163 my $INST_BIN = MM->catdir(MM->curdir,'blib','bin');
164 my $INST_SCRIPT = MM->catdir(MM->curdir,'blib','script');
165 my $INST_MAN1DIR = MM->catdir(MM->curdir,'blib','man1');
166 my $INST_MAN3DIR = MM->catdir(MM->curdir,'blib','man3');
167 install({
168 read => "$Config{sitearchexp}/auto/$FULLEXT/.packlist",
169 write => "$Config{installsitearch}/auto/$FULLEXT/.packlist",
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170 $INST_LIB => (directory_not_empty($INST_ARCHLIB)) ?
171 $Config{installsitearch} :
172 $Config{installsitelib},
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173 $INST_ARCHLIB => $Config{installsitearch},
174 $INST_BIN => $Config{installbin} ,
175 $INST_SCRIPT => $Config{installscript},
176 $INST_MAN1DIR => $Config{installman1dir},
177 $INST_MAN3DIR => $Config{installman3dir},
178 },1,0,0);
179}
180
4b6d56d3 181sub uninstall {
354f3b56 182 use ExtUtils::Packlist;
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183 my($fil,$verbose,$nonono) = @_;
184 die "no packlist file found: $fil" unless -f $fil;
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185 # my $my_req = $self->catfile(qw(auto ExtUtils Install forceunlink.al));
186 # require $my_req; # Hairy, but for the first
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187 my ($packlist) = ExtUtils::Packlist->new($fil);
188 foreach (sort(keys(%$packlist))) {
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189 chomp;
190 print "unlink $_\n" if $verbose;
f1387719 191 forceunlink($_) unless $nonono;
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192 }
193 print "unlink $fil\n" if $verbose;
456e5c25 194 close P;
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195 forceunlink($fil) unless $nonono;
196}
197
198sub inc_uninstall {
199 my($file,$libdir,$verbose,$nonono) = @_;
200 my($dir);
f1387719 201 my %seen_dir = ();
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202 foreach $dir (@INC, @PERL_ENV_LIB, @Config{qw(archlibexp
203 privlibexp
204 sitearchexp
205 sitelibexp)}) {
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206 next if $dir eq ".";
207 next if $seen_dir{$dir}++;
456e5c25 208 my($targetfile) = MY->catfile($dir,$libdir,$file);
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209 next unless -f $targetfile;
210
211 # The reason why we compare file's contents is, that we cannot
212 # know, which is the file we just installed (AFS). So we leave
213 # an identical file in place
214 my $diff = 0;
215 if ( -f $targetfile && -s _ == -s $file) {
216 # We have a good chance, we can skip this one
fb73857a 217 $diff = compare($file,$targetfile);
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218 } else {
219 print "#$file and $targetfile differ\n" if $verbose>1;
220 $diff++;
221 }
222
223 next unless $diff;
224 if ($nonono) {
225 if ($verbose) {
226 $Inc_uninstall_warn_handler ||= new ExtUtils::Install::Warn;
227 $libdir =~ s|^\./|| ; # That's just cosmetics, no need to port. It looks prettier.
228 $Inc_uninstall_warn_handler->add("$libdir/$file",$targetfile);
229 }
230 # if not verbose, we just say nothing
231 } else {
232 print "Unlinking $targetfile (shadowing?)\n";
233 forceunlink($targetfile);
234 }
235 }
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236}
237
238sub pm_to_blib {
239 my($fromto,$autodir) = @_;
240
241 use File::Basename qw(dirname);
242 use File::Copy qw(copy);
243 use File::Path qw(mkpath);
fb73857a 244 use File::Compare qw(compare);
08ad6bd5 245 use AutoSplit;
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246 # my $my_req = $self->catfile(qw(auto ExtUtils Install forceunlink.al));
247 # require $my_req; # Hairy, but for the first
08ad6bd5 248
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249 if (!ref($fromto) && -r $fromto)
250 {
251 # Win32 has severe command line length limitations, but
252 # can generate temporary files on-the-fly
253 # so we pass name of file here - eval it to get hash
254 open(FROMTO,"<$fromto") or die "Cannot open $fromto:$!";
255 my $str = '$fromto = {qw{'.join('',<FROMTO>).'}}';
256 eval $str;
257 close(FROMTO);
258 }
259
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260 mkpath($autodir,0,0755);
261 foreach (keys %$fromto) {
262 next if -f $fromto->{$_} && -M $fromto->{$_} < -M $_;
fb73857a 263 unless (compare($_,$fromto->{$_})){
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264 print "Skip $fromto->{$_} (unchanged)\n";
265 next;
266 }
267 if (-f $fromto->{$_}){
f1387719 268 forceunlink($fromto->{$_});
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269 } else {
270 mkpath(dirname($fromto->{$_}),0,0755);
271 }
272 copy($_,$fromto->{$_});
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273 my($mode,$atime,$mtime) = (stat)[2,8,9];
274 utime($atime,$mtime+$Is_VMS,$fromto->{$_});
275 chmod(0444 | ( $mode & 0111 ? 0111 : 0 ),$fromto->{$_});
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276 print "cp $_ $fromto->{$_}\n";
277 next unless /\.pm$/;
278 autosplit($fromto->{$_},$autodir);
279 }
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280}
281
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282package ExtUtils::Install::Warn;
283
284sub new { bless {}, shift }
285
286sub add {
287 my($self,$file,$targetfile) = @_;
288 push @{$self->{$file}}, $targetfile;
289}
290
291sub DESTROY {
292 my $self = shift;
293 my($file,$i,$plural);
294 foreach $file (sort keys %$self) {
295 $plural = @{$self->{$file}} > 1 ? "s" : "";
296 print "## Differing version$plural of $file found. You might like to\n";
297 for (0..$#{$self->{$file}}) {
298 print "rm ", $self->{$file}[$_], "\n";
299 $i++;
300 }
301 }
302 $plural = $i>1 ? "all those files" : "this file";
303 print "## Running 'make install UNINST=1' will unlink $plural for you.\n";
304}
305
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3061;
307
308__END__
309
310=head1 NAME
311
312ExtUtils::Install - install files from here to there
313
314=head1 SYNOPSIS
315
316B<use ExtUtils::Install;>
317
318B<install($hashref,$verbose,$nonono);>
319
320B<uninstall($packlistfile,$verbose,$nonono);>
321
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322B<pm_to_blib($hashref);>
323
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324=head1 DESCRIPTION
325
08ad6bd5 326Both install() and uninstall() are specific to the way
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327ExtUtils::MakeMaker handles the installation and deinstallation of
328perl modules. They are not designed as general purpose tools.
329
330install() takes three arguments. A reference to a hash, a verbose
331switch and a don't-really-do-it switch. The hash ref contains a
332mapping of directories: each key/value pair is a combination of
333directories to be copied. Key is a directory to copy from, value is a
334directory to copy to. The whole tree below the "from" directory will
335be copied preserving timestamps and permissions.
336
337There are two keys with a special meaning in the hash: "read" and
338"write". After the copying is done, install will write the list of
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339target files to the file named by C<$hashref-E<gt>{write}>. If there is
340another file named by C<$hashref-E<gt>{read}>, the contents of this file will
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341be merged into the written file. The read and the written file may be
342identical, but on AFS it is quite likely, people are installing to a
343different directory than the one where the files later appear.
344
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345install_default() takes one or less arguments. If no arguments are
346specified, it takes $ARGV[0] as if it was specified as an argument.
347The argument is the value of MakeMaker's C<FULLEXT> key, like F<Tk/Canvas>.
348This function calls install() with the same arguments as the defaults
349the MakeMaker would use.
350
de592821 351The argument-less form is convenient for install scripts like
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352
353 perl -MExtUtils::Install -e install_default Tk/Canvas
354
355Assuming this command is executed in a directory with populated F<blib>
356directory, it will proceed as if the F<blib> was build by MakeMaker on
357this machine. This is useful for binary distributions.
358
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359uninstall() takes as first argument a file containing filenames to be
360unlinked. The second argument is a verbose switch, the third is a
361no-don't-really-do-it-now switch.
362
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PP
363pm_to_blib() takes a hashref as the first argument and copies all keys
364of the hash to the corresponding values efficiently. Filenames with
365the extension pm are autosplit. Second argument is the autosplit
366directory.
4b6d56d3 367
08ad6bd5 368=cut