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Text File | 1998-04-04 | 4.3 KB | 110 lines | [TEXT/McPL] |
- # NOTE: Derived from wintermute:Development:MacPerl:perl:lib:DynaLoader.pm. Changes made here will be lost.
- package DynaLoader;
-
- sub dl_findfile {
- # Read ext/DynaLoader/DynaLoader.doc for detailed information.
- # This function does not automatically consider the architecture
- # or the perl library auto directories.
- my (@args) = @_;
- my (@dirs, $dir); # which directories to search
- my (@found); # full paths to real files we have found
- my $dl_ext= $Config::Config{'dlext'}; # suffix for perl extensions
- my $dl_so = $Config::Config{'so'}; # suffix for shared libraries
-
- print STDERR "dl_findfile(@args)\n" if $dl_debug;
-
- # accumulate directories but process files as they appear
- arg: foreach(@args) {
- # Special fast case: full filepath requires no search
- if ($Is_VMS && m%[:>/\]]% && -f $_) {
- push(@found,dl_expandspec(VMS::Filespec::vmsify($_)));
- last arg unless wantarray;
- next;
- }
- elsif ($Is_MacOS && m/:/ && -f $_) {
- push(@found,$_);
- last arg unless wantarray;
- next;
- }
- elsif (m:/: && -f $_ && !$do_expand) {
- push(@found,$_);
- last arg unless wantarray;
- next;
- }
-
- # Deal with directories first:
- # Using a -L prefix is the preferred option (faster and more robust)
- if (m:^-L:) { s/^-L//; push(@dirs, $_); next; }
-
- if ($Is_MacOS) {
- # Otherwise we try to try to spot directories by a heuristic
- # (this is a more complicated issue than it first appears)
- if (m/:/ && -d $_) { push(@dirs, $_); next; }
-
- # Only files should get this far...
- my(@names, $name); # what filenames to look for
- if (m:-l: ) { # convert -lname to appropriate library name
- s/-l//;
- push(@names,"$_");
- } else { # Umm, a bare name. Try various alternatives:
- push(@names, $_);
- }
- foreach $dir (@dirs, @dl_library_path) {
- next unless -d $dir;
- $dir =~ s/:$//;
- $dir =~ s/^([^:]+)$/:$1/;
- foreach $name (@names) {
- my($file) = "$dir:$name";
- print STDERR " checking in $dir for $name\n" if $dl_debug;
- if (-f $file) {
- push(@found, $file);
- next arg; # no need to look any further
- }
- }
- }
- } else {
- # Otherwise we try to try to spot directories by a heuristic
- # (this is a more complicated issue than it first appears)
- if (m:/: && -d $_) { push(@dirs, $_); next; }
-
- # Only files should get this far...
- my(@names, $name); # what filenames to look for
- if (m:-l: ) { # convert -lname to appropriate library name
- s/-l//;
- push(@names,"lib$_.$dl_so");
- push(@names,"lib$_.a");
- } else { # Umm, a bare name. Try various alternatives:
- # these should be ordered with the most likely first
- push(@names,"$_.$dl_ext") unless m/\.$dl_ext$/o;
- push(@names,"$_.$dl_so") unless m/\.$dl_so$/o;
- push(@names,"lib$_.$dl_so") unless m:/:;
- push(@names,"$_.a") if !m/\.a$/ and $dlsrc eq "dl_dld.xs";
- push(@names, $_);
- }
- foreach $dir (@dirs, @dl_library_path) {
- next unless -d $dir;
- chop($dir = VMS::Filespec::unixpath($dir)) if $Is_VMS;
- foreach $name (@names) {
- my($file) = "$dir/$name";
- print STDERR " checking in $dir for $name\n" if $dl_debug;
- $file = _check_file($file);
- if ($file) {
- push(@found, $file);
- next arg; # no need to look any further
- }
- }
- }
- }
- }
- if ($dl_debug) {
- foreach(@dirs) {
- print STDERR " dl_findfile ignored non-existent directory: $_\n" unless -d $_;
- }
- print STDERR "dl_findfile found: @found\n";
- }
- return $found[0] unless wantarray;
- @found;
- }
-
- 1;
-