1 files changed, 65 insertions, 0 deletions
diff --git a/modula3_count b/modula3_count
new file mode 100644
index 0000000..fa2921d
--- /dev/null
+++ b/modula3_count
@@ -0,0 +1,65 @@
+#!/usr/bin/perl -w
+# modula3_count - count physical lines of code
+# Strips out (* .. *) and counts the rest.
+# Usage: modula3_count [-f file] [list_of_files]
+#  file: file with a list of files to count (if "-", read list from stdin)
+#  list_of_files: list of files to count
+#  -f file or list_of_files can be used, or both
+
+$total_sloc = 0;
+
+# Do we have "-f" (read list of files from second argument)?
+if (($#ARGV >= 1) && ($ARGV[0] eq "-f")) {
+  # Yes, we have -f
+  if ($ARGV[1] eq "-") {
+    # The list of files is in STDIN
+    while (<STDIN>) {
+      chomp ($_);
+      &count_file ($_);
+    }
+  } else {
+    # The list of files is in the file $ARGV[1]
+    open (FILEWITHLIST, $ARGV[1]) || die "Error: Could not open $ARGV[1]\n";
+    while (<FILEWITHLIST>) {
+      chomp ($_);
+      &count_file ($_);
+    }
+    close FILEWITHLIST;
+  }
+  shift @ARGV; shift @ARGV;
+}
+# Process all (remaining) arguments as file names
+while ($file = shift @ARGV) {
+  &count_file ($file);
+}
+
+print "Total:\n";
+print "$total_sloc\n";
+
+sub count_file {
+  my ($file) = @_;
+  my $sloc = 0;
+  my $incomment = 0;
+
+  open (FILE, $file);
+  while (<FILE>) {
+    if ($incomment) {
+      if (m/\*\)/) { s/^.*?\*\)//;  $incomment = 0;}
+      else { s/.*//; }
+    }
+    if (!$incomment) {
+      s!\(\*.*?\*\)!!g;
+      if (m/\(\*/) {
+        s/\(\*.*//;
+        $incomment = 1;
+      }
+    }
+    if (m/\S/) {$sloc++;}
+  }
+  print "$sloc $file\n";
+  if ($incomment) {print "ERROR: ended in comment in $file\n";}
+  $total_sloc += $sloc;
+  $sloc = 0;
+  $incomment = 0;
+  close (FILE);
+}