* Scan for BibTeX files included by \bibliography.

* Automatically run BibTeX when necessary (i.e., when there are
  \citations in the aux file).

svn path=/nixpkgs/trunk/; revision=3222

pkgs/misc/tex/nix/copy-includes.pl

@@ -15,8 +15,6 @@ for (my $n = 0; $n < @ARGV; $n += 2) {
     my $fullPath = $ARGV[$n];
     my $relPath = $ARGV[$n + 1];
 
-    print "$fullPath <- $relPath\n";
-
     createDirs $relPath;
         
     symlink $fullPath, $relPath or die "cannot create symlink `$relPath'";

pkgs/misc/tex/nix/default.nix

@@ -33,6 +33,9 @@ rec {
       args = [ ./find-includes.pl ];
 
       rootFile = toString rootFile; # !!! hacky
+
+      # Forces rebuilds.
+      hack = __currentTime;
     };
     
 }

pkgs/misc/tex/nix/find-includes.pl

@@ -50,7 +50,13 @@ while (scalar @workset > 0) {
 	    my $fn2 = $2;
             die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
 	    push @workset, $path . "/" . $fn2 . ".cls";
-	}
+	} elsif (/\\bibliography\{(.*)\}/) {
+            foreach my $bib (split /,/, $1) {
+                $bib =~ s/^\s+//; # remove leading / trailing whitespace
+                $bib =~ s/\s+$//;
+                push @workset, $path . "/" . $bib . ".bib";
+            }
+        }
         # !!! also support \usepackage
     }
     

pkgs/misc/tex/nix/run-latex.sh

@@ -25,9 +25,9 @@ fi
 
 $latex $rootName
 
-if grep -q '\\bibitem' $rootNameBase.bbl; then
+if grep -q '\\citation' $rootNameBase.aux; then
     bibtex $rootNameBase
-fi    
+fi
 
 $latex $rootName