dl_findfile.al

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

# NOTE: Derived from ../../lib/DynaLoader.pm.
# Changes made here will be lost when autosplit is run again.
# See AutoSplit.pm.
package DynaLoader;

#line 242 "../../lib/DynaLoader.pm (autosplit into ../../lib/auto/DynaLoader/dl_findfile.al)"
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= 'so'; # $Config::Config{'dlext'} suffix for perl extensions
    #my $dl_so = '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 (m:/: && -f $_) {
	    push(@found,$_);
	    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; }

	
	
        #  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, $name);    # what filenames to look for
        if (m:-l: ) {          # convert -lname to appropriate library name
            s/-l//;
            push(@names,"lib$_.so");
            push(@names,"lib$_.a");
        } else {                # Umm, a bare name. Try various alternatives:
            # these should be ordered with the most likely first
            push(@names,"$_.so")    unless m/\.so$/o;
            push(@names,"$_.so")     unless m/\.so$/o;
            push(@names,"lib$_.so")  unless m:/:;
            push(@names,"$_.a")          if !m/\.a$/ and $dlsrc eq "dl_dld.xs";
            push(@names, $_);
        }
	my $dirsep = '/';
	
        foreach $dir (@dirs, @dl_library_path) {
            next unless -d $dir;
	    
            foreach $name (@names) {
		my($file) = "$dir$dirsep$name";
                print STDERR " checking in $dir for $name\n" if $dl_debug;
		$file = ($do_expand) ? dl_expandspec($file) : (-f $file && $file);
		#$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;
}

# end of DynaLoader::dl_findfile
1;