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1 | package ExtUtils::Install; |
2 | |
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3 | $VERSION = substr q$Revision: 1.16 $, 10; |
4 | # $Date: 1996/12/17 00:31:26 $ |
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5 | |
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6 | use Exporter; |
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7 | use Carp (); |
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8 | use Config (); |
9 | use vars qw(@ISA @EXPORT $VERSION); |
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10 | @ISA = ('Exporter'); |
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11 | @EXPORT = ('install','uninstall','pm_to_blib'); |
12 | $Is_VMS = $^O eq 'VMS'; |
13 | |
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14 | my $splitchar = $^O eq 'VMS' ? '|' : $^O eq 'os2' ? ';' : ':'; |
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15 | my @PERL_ENV_LIB = split $splitchar, defined $ENV{'PERL5LIB'} ? $ENV{'PERL5LIB'} : $ENV{'PERLLIB'} || ''; |
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16 | my $Inc_uninstall_warn_handler; |
17 | |
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18 | #use vars qw( @EXPORT @ISA $Is_VMS ); |
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19 | #use strict; |
20 | |
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21 | sub forceunlink { |
22 | chmod 0666, $_[0]; |
23 | unlink $_[0] or Carp::croak("Cannot forceunlink $_[0]: $!") |
24 | } |
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25 | |
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26 | sub install { |
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27 | my($hash,$verbose,$nonono,$inc_uninstall) = @_; |
4b6d56d3 |
28 | $verbose ||= 0; |
29 | $nonono ||= 0; |
08ad6bd5 |
30 | |
31 | use Cwd qw(cwd); |
32 | use ExtUtils::MakeMaker; # to implement a MY class |
33 | use File::Basename qw(dirname); |
34 | use File::Copy qw(copy); |
35 | use File::Find qw(find); |
36 | use File::Path qw(mkpath); |
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37 | |
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38 | my(%hash) = %$hash; |
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39 | my(%pack, %write, $dir, $warn_permissions); |
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40 | local(*DIR, *P); |
41 | for (qw/read write/) { |
42 | $pack{$_}=$hash{$_}; |
43 | delete $hash{$_}; |
44 | } |
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45 | my($source_dir_or_file); |
46 | foreach $source_dir_or_file (sort keys %hash) { |
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47 | #Check if there are files, and if yes, look if the corresponding |
48 | #target directory is writable for us |
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49 | opendir DIR, $source_dir_or_file or next; |
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50 | for (readdir DIR) { |
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51 | next if $_ eq "." || $_ eq ".." || $_ eq ".exists"; |
08ad6bd5 |
52 | if (-w $hash{$source_dir_or_file} || mkpath($hash{$source_dir_or_file})) { |
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53 | last; |
54 | } else { |
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55 | warn "Warning: You do not have permissions to install into $hash{$source_dir_or_file}" |
56 | unless $warn_permissions++; |
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57 | } |
58 | } |
59 | closedir DIR; |
60 | } |
61 | if (-f $pack{"read"}) { |
08ad6bd5 |
62 | open P, $pack{"read"} or Carp::croak("Couldn't read $pack{'read'}"); |
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63 | # Remember what you found |
64 | while (<P>) { |
65 | chomp; |
66 | $write{$_}++; |
67 | } |
68 | close P; |
69 | } |
70 | my $cwd = cwd(); |
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71 | my $umask = umask 0 unless $Is_VMS; |
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72 | |
73 | # This silly reference is just here to be able to call MY->catdir |
74 | # without a warning (Waiting for a proper path/directory module, |
08ad6bd5 |
75 | # Charles!) |
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76 | my $MY = {}; |
77 | bless $MY, 'MY'; |
78 | my($source); |
79 | MOD_INSTALL: foreach $source (sort keys %hash) { |
80 | #copy the tree to the target directory without altering |
81 | #timestamp and permission and remember for the .packlist |
82 | #file. The packlist file contains the absolute paths of the |
83 | #install locations. AFS users may call this a bug. We'll have |
84 | #to reconsider how to add the means to satisfy AFS users also. |
85 | chdir($source) or next; |
86 | find(sub { |
87 | my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size, |
88 | $atime,$mtime,$ctime,$blksize,$blocks) = stat; |
89 | return unless -f _; |
90 | return if $_ eq ".exists"; |
91 | my $targetdir = $MY->catdir($hash{$source},$File::Find::dir); |
92 | my $targetfile = $MY->catfile($targetdir,$_); |
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93 | |
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94 | my $diff = 0; |
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95 | if ( -f $targetfile && -s _ == $size) { |
96 | # We have a good chance, we can skip this one |
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97 | $diff = my_cmp($_,$targetfile); |
4b6d56d3 |
98 | } else { |
99 | print "$_ differs\n" if $verbose>1; |
100 | $diff++; |
101 | } |
102 | |
103 | if ($diff){ |
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104 | if (-f $targetfile){ |
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105 | forceunlink($targetfile) unless $nonono; |
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106 | } else { |
107 | mkpath($targetdir,0,0755) unless $nonono; |
108 | print "mkpath($targetdir,0,0755)\n" if $verbose>1; |
109 | } |
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110 | copy($_,$targetfile) unless $nonono; |
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111 | print "Installing $targetfile\n"; |
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112 | utime($atime,$mtime + $Is_VMS,$targetfile) unless $nonono>1; |
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113 | print "utime($atime,$mtime,$targetfile)\n" if $verbose>1; |
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114 | $mode = 0444 | ( $mode & 0111 ? 0111 : 0 ); |
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115 | chmod $mode, $targetfile; |
116 | print "chmod($mode, $targetfile)\n" if $verbose>1; |
117 | } else { |
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118 | print "Skipping $targetfile (unchanged)\n" if $verbose; |
119 | } |
120 | |
121 | if (! defined $inc_uninstall) { # it's called |
122 | } elsif ($inc_uninstall == 0){ |
123 | inc_uninstall($_,$File::Find::dir,$verbose,1); # nonono set to 1 |
124 | } else { |
125 | inc_uninstall($_,$File::Find::dir,$verbose,0); # nonono set to 0 |
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126 | } |
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127 | $write{$targetfile}++; |
128 | |
129 | }, "."); |
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130 | chdir($cwd) or Carp::croak("Couldn't chdir to $cwd: $!"); |
4b6d56d3 |
131 | } |
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132 | umask $umask unless $Is_VMS; |
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133 | if ($pack{'write'}) { |
134 | $dir = dirname($pack{'write'}); |
135 | mkpath($dir,0,0755); |
136 | print "Writing $pack{'write'}\n"; |
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137 | open P, ">$pack{'write'}" or Carp::croak("Couldn't write $pack{'write'}: $!"); |
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138 | for (sort keys %write) { |
139 | print P "$_\n"; |
140 | } |
141 | close P; |
142 | } |
143 | } |
144 | |
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145 | sub my_cmp { |
146 | my($one,$two) = @_; |
147 | local(*F,*T); |
148 | my $diff = 0; |
149 | open T, $two or return 1; |
150 | open F, $one or Carp::croak("Couldn't open $one: $!"); |
151 | my($fr, $tr, $fbuf, $tbuf, $size); |
152 | $size = 1024; |
153 | # print "Reading $one\n"; |
154 | while ( $fr = read(F,$fbuf,$size)) { |
155 | unless ( |
156 | $tr = read(T,$tbuf,$size) and |
157 | $tbuf eq $fbuf |
158 | ){ |
159 | # print "diff "; |
160 | $diff++; |
161 | last; |
162 | } |
163 | # print "$fr/$tr "; |
164 | } |
165 | # print "\n"; |
166 | close F; |
167 | close T; |
168 | $diff; |
169 | } |
170 | |
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171 | sub uninstall { |
172 | my($fil,$verbose,$nonono) = @_; |
173 | die "no packlist file found: $fil" unless -f $fil; |
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174 | # my $my_req = $self->catfile(qw(auto ExtUtils Install forceunlink.al)); |
175 | # require $my_req; # Hairy, but for the first |
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176 | local *P; |
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177 | open P, $fil or Carp::croak("uninstall: Could not read packlist file $fil: $!"); |
4b6d56d3 |
178 | while (<P>) { |
179 | chomp; |
180 | print "unlink $_\n" if $verbose; |
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181 | forceunlink($_) unless $nonono; |
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182 | } |
183 | print "unlink $fil\n" if $verbose; |
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184 | forceunlink($fil) unless $nonono; |
185 | } |
186 | |
187 | sub inc_uninstall { |
188 | my($file,$libdir,$verbose,$nonono) = @_; |
189 | my($dir); |
190 | my $MY = {}; |
191 | bless $MY, 'MY'; |
192 | my %seen_dir = (); |
193 | foreach $dir (@INC, @PERL_ENV_LIB, @Config::Config{qw/archlibexp privlibexp sitearchexp sitelibexp/}) { |
194 | next if $dir eq "."; |
195 | next if $seen_dir{$dir}++; |
196 | my($targetfile) = $MY->catfile($dir,$libdir,$file); |
197 | next unless -f $targetfile; |
198 | |
199 | # The reason why we compare file's contents is, that we cannot |
200 | # know, which is the file we just installed (AFS). So we leave |
201 | # an identical file in place |
202 | my $diff = 0; |
203 | if ( -f $targetfile && -s _ == -s $file) { |
204 | # We have a good chance, we can skip this one |
205 | $diff = my_cmp($file,$targetfile); |
206 | } else { |
207 | print "#$file and $targetfile differ\n" if $verbose>1; |
208 | $diff++; |
209 | } |
210 | |
211 | next unless $diff; |
212 | if ($nonono) { |
213 | if ($verbose) { |
214 | $Inc_uninstall_warn_handler ||= new ExtUtils::Install::Warn; |
215 | $libdir =~ s|^\./|| ; # That's just cosmetics, no need to port. It looks prettier. |
216 | $Inc_uninstall_warn_handler->add("$libdir/$file",$targetfile); |
217 | } |
218 | # if not verbose, we just say nothing |
219 | } else { |
220 | print "Unlinking $targetfile (shadowing?)\n"; |
221 | forceunlink($targetfile); |
222 | } |
223 | } |
08ad6bd5 |
224 | } |
225 | |
226 | sub pm_to_blib { |
227 | my($fromto,$autodir) = @_; |
228 | |
229 | use File::Basename qw(dirname); |
230 | use File::Copy qw(copy); |
231 | use File::Path qw(mkpath); |
232 | use AutoSplit; |
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233 | # my $my_req = $self->catfile(qw(auto ExtUtils Install forceunlink.al)); |
234 | # require $my_req; # Hairy, but for the first |
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235 | |
236 | my $umask = umask 0022 unless $Is_VMS; |
237 | mkpath($autodir,0,0755); |
238 | foreach (keys %$fromto) { |
239 | next if -f $fromto->{$_} && -M $fromto->{$_} < -M $_; |
240 | unless (my_cmp($_,$fromto->{$_})){ |
241 | print "Skip $fromto->{$_} (unchanged)\n"; |
242 | next; |
243 | } |
244 | if (-f $fromto->{$_}){ |
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245 | forceunlink($fromto->{$_}); |
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246 | } else { |
247 | mkpath(dirname($fromto->{$_}),0,0755); |
248 | } |
249 | copy($_,$fromto->{$_}); |
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250 | my($mode,$atime,$mtime) = (stat)[2,8,9]; |
251 | utime($atime,$mtime+$Is_VMS,$fromto->{$_}); |
252 | chmod(0444 | ( $mode & 0111 ? 0111 : 0 ),$fromto->{$_}); |
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253 | print "cp $_ $fromto->{$_}\n"; |
254 | next unless /\.pm$/; |
255 | autosplit($fromto->{$_},$autodir); |
256 | } |
257 | umask $umask unless $Is_VMS; |
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258 | } |
259 | |
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260 | package ExtUtils::Install::Warn; |
261 | |
262 | sub new { bless {}, shift } |
263 | |
264 | sub add { |
265 | my($self,$file,$targetfile) = @_; |
266 | push @{$self->{$file}}, $targetfile; |
267 | } |
268 | |
269 | sub DESTROY { |
270 | my $self = shift; |
271 | my($file,$i,$plural); |
272 | foreach $file (sort keys %$self) { |
273 | $plural = @{$self->{$file}} > 1 ? "s" : ""; |
274 | print "## Differing version$plural of $file found. You might like to\n"; |
275 | for (0..$#{$self->{$file}}) { |
276 | print "rm ", $self->{$file}[$_], "\n"; |
277 | $i++; |
278 | } |
279 | } |
280 | $plural = $i>1 ? "all those files" : "this file"; |
281 | print "## Running 'make install UNINST=1' will unlink $plural for you.\n"; |
282 | } |
283 | |
4b6d56d3 |
284 | 1; |
285 | |
286 | __END__ |
287 | |
288 | =head1 NAME |
289 | |
290 | ExtUtils::Install - install files from here to there |
291 | |
292 | =head1 SYNOPSIS |
293 | |
294 | B<use ExtUtils::Install;> |
295 | |
296 | B<install($hashref,$verbose,$nonono);> |
297 | |
298 | B<uninstall($packlistfile,$verbose,$nonono);> |
299 | |
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300 | B<pm_to_blib($hashref);> |
301 | |
4b6d56d3 |
302 | =head1 DESCRIPTION |
303 | |
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304 | Both install() and uninstall() are specific to the way |
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305 | ExtUtils::MakeMaker handles the installation and deinstallation of |
306 | perl modules. They are not designed as general purpose tools. |
307 | |
308 | install() takes three arguments. A reference to a hash, a verbose |
309 | switch and a don't-really-do-it switch. The hash ref contains a |
310 | mapping of directories: each key/value pair is a combination of |
311 | directories to be copied. Key is a directory to copy from, value is a |
312 | directory to copy to. The whole tree below the "from" directory will |
313 | be copied preserving timestamps and permissions. |
314 | |
315 | There are two keys with a special meaning in the hash: "read" and |
316 | "write". After the copying is done, install will write the list of |
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317 | target files to the file named by C<$hashref-E<gt>{write}>. If there is |
318 | another file named by C<$hashref-E<gt>{read}>, the contents of this file will |
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319 | be merged into the written file. The read and the written file may be |
320 | identical, but on AFS it is quite likely, people are installing to a |
321 | different directory than the one where the files later appear. |
322 | |
323 | uninstall() takes as first argument a file containing filenames to be |
324 | unlinked. The second argument is a verbose switch, the third is a |
325 | no-don't-really-do-it-now switch. |
326 | |
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327 | pm_to_blib() takes a hashref as the first argument and copies all keys |
328 | of the hash to the corresponding values efficiently. Filenames with |
329 | the extension pm are autosplit. Second argument is the autosplit |
330 | directory. |
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331 | |
08ad6bd5 |
332 | =cut |