pdfcrop 1.14 (12sep08)

git-svn-id: svn://tug.org/texlive/trunk@10596 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 52 insertions, 4 deletions

diff --git a/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl b/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl
index 70c85483670..a8768f0ef0d 100755
--- a/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl
+++ b/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl
@@ -22,8 +22,8 @@ $^W=1; # turn warning on
 #
 my $file        = "pdfcrop.pl";
 my $program     = uc($&) if $file =~ /^\w+/;
-my $version     = "1.13";
-my $date        = "2008/07/24";
+my $version     = "1.14";
+my $date        = "2008/09/12";
 my $author      = "Heiko Oberdiek";
 my $copyright   = "Copyright (c) 2002-2008 by $author.";
 #
@@ -49,6 +49,7 @@ my $copyright   = "Copyright (c) 2002-2008 by $author.";
 #   2008/07/24 v1.13: open("-|")/workaround removed.
 #                     Input files with unsafe file names are linked/copied
 #                     to temporary file with safe file name.
+#   2008/09/12 v1.14: Error detection for invalid Bounding Boxes.
 
 ### program identification
 my $title = "$program $version, $date - $copyright\n";
@@ -334,6 +335,18 @@ if ($::opt_tex eq 'pdftex') {
   \pdfxform0\relax
   \shipout\hbox{\pdfrefxform\pdflastxform}%
 }%
+\def\pageinclude#1{%
+  \pdfhorigin=0pt\relax
+  \pdfvorigin=0pt\relax
+  \pdfximage page #1{\pdffile}%
+  \setbox0=\hbox{\pdfrefximage\pdflastximage}%
+  \pdfpagewidth=\wd0\relax
+  \pdfpageheight=\ht0\relax
+  \advance\pdfpageheight by \dp0\relax
+  \shipout\hbox{%
+    \raise\dp0\box0\relax
+  }%
+}
 END_TMP_HEAD
 }
 else { # XeTeX
@@ -391,13 +404,48 @@ while (<GS>) {
         /^$bb:\s*([\.\d]+) ([\.\d]+) ([\.\d]+) ([\.\d]+)/o;
     @bbox = ($1, $2, $3, $4) unless $::opt_bbox;
     $page++;
+
+    my $empty = 0;
+    $empty = 1 if $bbox[0] >= $bbox[2];
+    $empty = 1 if $bbox[1] >= $bbox[3];
+    if ($empty) {
+        print <<"END_WARNING";
+
+!!! Warning: Empty Bounding Box is returned by Ghostscript!
+!!!   Page $page: @bbox
+!!! Either there is a problem with the page or with Ghostscript.
+!!! Recovery is tried by embedding the page in its original size.
+
+END_WARNING
+        print TMP "\\pageinclude{$page}\n";
+        next;
+    }
+
     print "* Page $page: @bbox\n" if $::opt_verbose;
+
+    my @bb = ($bbox[0] - $llx, $bbox[1] - $ury,
+             $bbox[2] + $urx, $bbox[3] + $lly);
+
+    $empty = 0;
+    $empty = 1 if $bb[0] >= $bb[2];
+    $empty = 1 if $bb[1] >= $bb[3];
+    if ($empty) {
+        print <<"END_WARNING";
+
+!!! Warning: The final Bounding Box is empty!
+!!!   Page: $page: @bb
+!!! Probably caused by too large negative margin values.
+!!! Recovery by ignoring margin values.
+
+END_WARNING
+        print TMP "\\page $page [@bbox]\n";
+        # clipping shouldn't make a difference
+        next;
+    }
     if ($::opt_clip) {
         print TMP "\\pageclip $page [@bbox][$llx $lly $urx $ury]\n";
     }
     else {
-        my @bb = ($bbox[0] - $llx, $bbox[1] - $ury,
-                 $bbox[2] + $urx, $bbox[3] + $lly);
         print TMP "\\page $page [@bb]\n";
     }
 }