From 9cba2999e555e6f30c890d9cca00ac7a69d2106d Mon Sep 17 00:00:00 2001
From: goodale <goodale@17b73243-c579-4c4c-a9d2-2d5706c11dac>
Date: Tue, 20 Nov 2001 02:50:57 +0000
Subject: Critical bugfix in the way that if conditions are handled - now can
 build Einstein thorns and pass testsuite with this.

Added output of # line stuff which si handy for debugging.

Fixed hopefully the last place where it might try to replace a token which
is in a string.

Tom


git-svn-id: http://svn.cactuscode.org/flesh/trunk@2468 17b73243-c579-4c4c-a9d2-2d5706c11dac
---
 lib/sbin/cpp.pl | 50 +++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 45 insertions(+), 5 deletions(-)

diff --git a/lib/sbin/cpp.pl b/lib/sbin/cpp.pl
index ca96a8fa..70dc5c1e 100755
--- a/lib/sbin/cpp.pl
+++ b/lib/sbin/cpp.pl
@@ -8,6 +8,8 @@
 #  @version $Header$
 #@@*/
 
+#$debug=1;
+
 ###############################################################################
 ###############################################################################
 # Setup some global variables.
@@ -330,6 +332,11 @@ sub ParseFile
     print "Entered ParseFile: $filename:$linenumber, active=$active\n";
   }
 
+  if($printline && $active && $linenumber==0)
+  {
+    print "# 1 \"$filename\"\n";
+  }
+
   while(1)
   {
     ($line, $linenumber) = &ReadLine(*INFILE,$linenumber);
@@ -488,6 +495,11 @@ sub ParseFile
             {
               # Process the new file.  Don't need to pass $active since wouldn't be here if inactive.
               &ProcessFile($1,$filename,$linenumber,$printline);
+
+	      if($printline && $active)
+	      {
+		print "# $linenumber \"$filename\"\n";
+	      }
             }
           }
         }
@@ -633,13 +645,18 @@ sub ProcessIf
 
   my $retval = 0;
 
-  if($line =~ m/^def\s+(.+)/)
+  if($debug)
   {
-    $retval = defined($defines{$1});
+    print "if requested on $line\n";
   }
-  elsif($line =~ m/^ndef\s+(.+)/)
+
+  if($line =~ m/^def\s+([^\s]+)/)
   {
-    $retval = ! defined($defines{$1});
+    $retval = defined($defines{$1}) ? 1 : 0;
+  }
+  elsif($line =~ m/^ndef\s+([^\s]+)/)
+  {
+    $retval = defined($defines{$1}) ? 0 : 1;
   }
   else
   {
@@ -647,6 +664,11 @@ sub ProcessIf
     $retval = 0;
   }
 
+  if($debug)
+  {
+    print "retval is $retval\n";
+  }
+
   return $retval;
 }
 
@@ -925,10 +947,28 @@ sub ParseAndExpand
   my @outline = ();
   my $retcode = 0;
 
+  my $insstring = 0;
+  my $indstring = 0;
+
   for(my $pos = 0 ; $pos < @splitline; $pos++)
   {
-    if($splitline[$pos] !~ m/[A-Za-z_]/)
+    # Pass through anything we're not interested in and anything in a string.
+    if($splitline[$pos] !~ m/[A-Za-z_]/ || $insstring == 1 || $indstring == 1)
     {
+      if($splitline[$pos] eq '\'')
+      {
+        if($pos == 0 || ($pos > 0 && $splitline[$pos-1] ne '\\'))
+        {
+          $insstring = 1 - $insstring;
+        }
+      }
+      if($splitline[$pos] eq '"')
+      {
+        if($pos == 0 || ($pos > 0 && $splitline[$pos-1] ne '\\'))
+        {
+          $indstring = 1 - $indstring;
+        }
+      }
       push(@outline, $splitline[$pos]);
       next;
     }
-- 
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