[project @ 2000-05-11 11:54:56 by simonmar]

[ghc-hetmet.git] / ghc / utils / hscpp / hscpp.prl

diff --git a/ghc/utils/hscpp/hscpp.prl b/ghc/utils/hscpp/hscpp.prl
index 12d4038..03a8398 100644 (file)
--- a/ghc/utils/hscpp/hscpp.prl
+++ b/ghc/utils/hscpp/hscpp.prl
@@ -10,43 +10,32 @@
 #
 
 $Verbose = 0;
+$file = '';
+@args = ();
 
-while ( $#ARGV >= 0 &&  $ARGV[0] eq '-v' ) {
-    if ($ARGV[0] eq '-v') {
-       $Verbose = 1;
-    } else {
-       die "hscpp: unrecognised argument: $$ARGV[0]\n";
-    }
+$Cpp = ${RAWCPP};
+
+while (@ARGV) {
+    $_ = $ARGV[0];
+    /^-v$/  && do { $Verbose = 1; shift(@ARGV); next; };
+    /^[^-]/ && $#ARGV == 0 && do { $file = $_; shift(@ARGV); next; };
+    push @args, $_;
     shift(@ARGV);
 }
-#ToDo: print a version number ?
-
-$OrigCpp = ${RAWCPP};
-
-if ( $OrigCpp =~ /(\S+)\s+(.*)/ ) {
-    $cmd  = $1;
-    $rest = $2;
-    if ( -x $cmd ) { # cool
-       $Cpp = $OrigCpp;
-    } else { # oops; try to guess
-       $GccV = `gcc -v 2>&1`;
-       if ( $GccV =~ /Reading specs from (.*)\/specs/ ) {
-           $Cpp = "$1/cpp $rest";
-       } else {
-           die "hscpp: don't know how to run cpp: $OrigCpp\n";
-       }
-    }
-} else {
-    $Cpp = $OrigCpp;
-}
 
-print STDERR "hscpp:CPP invoked: $Cpp @ARGV\n" if $Verbose;
+die "usage: hscpp [arg...] file" if ($file eq '');
 
-open(INPIPE, "$Cpp @ARGV |") || die "Can't open C pre-processor pipe\n";
+print STDERR "hscpp:CPP invoked: $Cpp @args - <$file\n" if $Verbose;
+open(INPIPE, "$Cpp @args - <$file |") 
+       || die "Can't open C pre-processor pipe\n";
 
 while (<INPIPE>) {
 
+    s/^#\s*line\s+(\d+)\s+\"\"$/\{\-# LINE \1 \"$file\" \-\}/;
+    s/^#\s*(\d+)\s+\"\".*/\{\-# LINE \1 \"$file\" \-\}/;
+
 # line directives come in flavo[u]rs:
+
 #   s/^#\s*line\s+\d+$/\{\-# LINE \-\}/;   IGNORE THIS ONE FOR NOW
     s/^#\s*line\s+(\d+)\s+(\".+\")$/\{\-# LINE \1 \2 \-\}/;
     s/^#\s*(\d+)\s+(\".*\").*/\{\-# LINE \1 \2 \-\}/;