Admin/check_ml_headers

identify axioms/conjectures more reliably in ATP proofs (an empty dependency list doesn't always indicate an axiom or conjecture!)

#!/usr/bin/env bash
#
# $Id$
#
# check_ml_headers - check headers of *.ML files in Distribution for inconsistencies
#
# requires some GNU tools
#

ONLY_FILENAMES=1
if [ "$1" == "-o" ]
then
  ONLY_FILENAMES=""
fi

REPORT_EMPTY=""
if [ "$2" == "-e" ]
then
  REPORT_EMPTY=1
fi

ISABELLE_SRC="$(isabelle getenv -b ISABELLE_HOME)/src/"

for LOC in $(find "$ISABELLE_SRC" -name "*.ML")
do
  TITLE="$(head -n 1 "$LOC" | grep -Po '(?<=Title:)\s*\S+.ML' | grep -Po '\S+.ML')"
  FILELOC="${LOC:${#ISABELLE_SRC}}"
  if [ "$TITLE" != "$FILELOC" ]
  then
    if [ -n "$REPORT_EMPTY" -o -n "$TITLE" ]
    then
      if [ -n "$ONLY_FILENAMES" ]
      then
        echo "Inconsistency in $LOC: $TITLE"
      else
        echo "$LOC"
      fi
    fi
  fi
done