psutils/extractres.pl

   1 @PERL@
   2 # extractres: extract resources from PostScript file
   3 #
   4 # Copyright (C) Angus J. C. Duggan 1991-1995
   5 # See file LICENSE for details.
   6
   7 $prog = ($0 =~ s=.*/==);
   8
   9 %resources = ();                # list of resources included
  10 %merge = ();                    # list of resources extracted this time
  11 %extn = ("font", ".pfa", "file", ".ps", "procset", ".ps", # resource extns
  12          "pattern", ".pat", "form", ".frm", "encoding", ".enc");
  13 %type = ("%%BeginFile:", "file", "%%BeginProcSet:", "procset",
  14          "%%BeginFont:", "font"); # resource types
  15
  16 while (@ARGV) {
  17    $_ = shift;
  18    if (/^-m(erge)?$/) { $merge = 1; }
  19    elsif (/^-/) {
  20       print STDERR "Usage: $prog [-merge] [file]\n";
  21       exit 1;
  22    } else {
  23       unshift(@ARGV, $_);
  24       last;
  25    }
  26 }
  27
  28 if (defined($ENV{TMPDIR})) {    # set body file name
  29    $body = "$ENV{TMPDIR}/body$$.ps";
  30 } else {
  31    $body = "body$$.ps";
  32 }
  33
  34 open(BODY, $body) && die "Temporary file $body already exists";
  35 open(BODY, ">$body") || die "Can't write file $body";
  36
  37 sub filename {                  # make filename for resource in @_
  38    local($name);
  39    foreach (@_) {               # sanitise name
  40       s/[!()\$\#*&\\\|\`\'\"\~\{\}\[\]\<\>\?]//g;
  41       $name .= $_;
  42    }
  43    $name =~ s@.*/@@;            # drop directories
  44    die "Filename not found for resource ", join(" ", @_), "\n"
  45       if $name =~ /^$/;
  46    $name;
  47 }
  48
  49 $output = STDOUT;               # start writing header out
  50 while (<>) {
  51    if (/^%%BeginResource:/ || /^%%BeginFont:/ || /^%%BeginProcSet:/) {
  52       local($comment, @res) = split(/\s+/); # look at resource type
  53       local($type) = defined($type{$comment}) ? $type{$comment} : shift(@res);
  54       local($name) = &filename(@res, $extn{$type}); # make file name
  55       $saveout = $output;
  56       if (!$resources{$name}) {
  57          print "%%IncludeResource: $type ", join(" ", @res), "\n";
  58          if (!open(RES, $name)) {
  59             open(RES, ">$name") || die "Can't write file $name";
  60             $resources{$name} = $name;
  61             $merge{$name} = $merge;
  62             $output = RES;
  63          } else {               # resource already exists
  64             close(RES);
  65             undef $output;
  66          }
  67       } elsif ($merge{$name}) {
  68          open(RES, ">>$name") || die "Can't append to file $name";
  69          $output = RES;
  70       } else {                  # resource already included
  71          undef $output;
  72       }
  73    } elsif (/^%%EndResource/ || /^%%EndFont/ || /^%%EndProcSet/) {
  74       if (defined $output) {
  75          print $output $_;
  76          close($output);
  77       }
  78       $output = $saveout;
  79       next;
  80    } elsif ((/^%%EndProlog/ || /^%%BeginSetup/ || /^%%Page:/)) {
  81       $output = BODY;
  82    }
  83    print $output $_
  84       if defined $output;
  85 }
  86
  87 close(BODY);                    # close body output file
  88
  89 open(BODY, $body);              # reopen body for input
  90 while (<BODY>) {                # print it all
  91    print $_;
  92 }
  93 close(BODY);
  94
  95 unlink($body);                  # dispose of body file
  96 @END@