#!/usr/bin/awk -f 
#
# A trivial script to display user rev date of the first entry from stdin
# per svn log entry.  Relies on svn log to dump most to last recent and
# therefore show the most recent commit-per-committer, e.g.
#
#   svn log -q -r###:### http://svn.apache.org/repos/asf/apr | ./whocommitted.awk
#
# produces the most-recent-commits per committer summary
#
# To concatinate range by range, use --incremental for svn log args, e.g.
# svn log -q -r10000:19999 --incremental http://svn... >> catfile
#

BEGIN { FS = "[ |]+"; }

/^-+$/ { 
  next 
}

!/\(no author\)/ {
  if ($1 < FSEEN[$2] || FSEEN[$2] < "r") {
     FSEEN[$2] = $1;
     FDATE[$2] = $3;
  }
  if ($1 > SEEN[$2]) { 
     SEEN[$2] = $1;
     DATE[$2] = $3;
  }
  ++COUNT[$2];
}

END { 
  printf("%12s %5s  %8s  %9s     %-8s %-8s\n", " ", "Count", "First", "Last", "First", "Last");
  for (UID in SEEN) {
    printf("%-12s %5s  %s  %s  %-8s %-8s\n", UID, COUNT[UID], FDATE[UID], DATE[UID], FSEEN[UID], SEEN[UID]);
  }
}