format stuff in columns

2 files changed, 46 insertions, 6 deletions

diff --git a/tools/columns b/tools/columns
new file mode 100755
index 0000000..dcc934f
--- /dev/null
+++ b/tools/columns
@@ -0,0 +1,33 @@
+#! /usr/bin/perl -w
+
+## not very scalable;  stores entire document in memory
+
+use strict;
+use List::Util qw[min max];
+
+main:{
+## leftmost column is column ZERO
+  my @cwid = ();        # width of column
+
+  my @store = ();
+
+  while (my $line = <>){
+    chomp $line;
+    my @stuff = split(' ', $line);
+    for (my $ii = 0; $ii < 0+@stuff; $ii++){
+      my $old = $cwid[$ii] || 0;
+      $cwid[$ii] = max(length($stuff[$ii]), $old);
+    }
+    push @store, \@stuff;
+  }
+  foreach my $line (@store) {
+    my @stuff = @$line;
+    for (my $ii = 0; $ii < 0+@stuff; $ii++){
+      if ($ii) {
+        print " ";
+      }
+      printf("\%-$cwid[$ii]s", $stuff[$ii]);
+    }
+    print "\n";
+  }
+}
\ No newline at end of file
diff --git a/tools/greylist.c b/tools/greylist.c
index 910b40c..1745b32 100644
--- a/tools/greylist.c
+++ b/tools/greylist.c
@@ -111,7 +111,7 @@ string time_out(const int ttt){
   return foo.str();
 }
 
-void scan(const string p){
+void scan(const string p, const int copies=1){
   timeval now;
   gettimeofday(&now, NULL);
   using namespace boost::filesystem;
@@ -119,7 +119,8 @@ void scan(const string p){
   if (is_directory(p))  {
     for (directory_iterator itr(p); itr!=directory_iterator(); ++itr) {
       string basename = itr->path().filename();
-      cout << setw(20) << basename << ' '; // display filename only
+      for (int ii = 0; ii < copies; ii++)
+        cout << setw(20) << left << basename << ' '; // display filename only
       if (is_regular_file(itr->status())) {
 //        cout << " [" << file_size(itr->path()) << ']';
         struct stat mystat;
@@ -177,17 +178,23 @@ int main(int _argc, char** _argv){
   char** argv(_argv);
   const string dirname("/var/qmail/greylist");
   whatsit foo(argv[0], dirname); argc--; argv++;
+  int scanmode(0);
+  int copies(1);
   while (argc > 0) {
     string arg = argv[0]; argc--; argv++;
     if (arg == "-scan") {
-      scan(dirname);
-      return 0;
-    }
-    else {
+      scanmode++;
+    } else if (arg == "-copy")  {
+      copies++;
+    } else {
       cerr << "Unrecognized arg: " << arg << endl;
       exeunt(sa_syserr);
     }
   }
+  if (scanmode) {
+    scan(dirname, copies);
+    return 0;
+  }
 
   return foo.doit();
 }