util/find-unused-errs

   1 #! /bin/bash
   2 # Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the Apache License 2.0 (the "License").  You may not use
   5 # this file except in compliance with the License.  You can obtain a copy
   6 # in the file LICENSE in the source distribution or at
   7 # https://www.openssl.org/source/license.html
   8
   9 # Find unused error function-names and reason-codes, and edit them
  10 # out of the source.  Doesn't handle line-wrapping, might have to do
  11 # some manual cleanups to fix compile errors.
  12
  13 export X1=/tmp/f.1.$$
  14 export X2=/tmp/f.2.$$
  15
  16 case "$1" in
  17     -f)
  18         PAT='_F_'
  19         echo Functions only
  20         ;;
  21     -[er])
  22         PAT='_R_'
  23         echo Reason codes only
  24         ;;
  25     "")
  26         PAT='_[FR]_'
  27         echo Function and reasons
  28         ;;
  29     *)
  30         echo "Usage error; one of -[efr] required."
  31         exit 1;
  32         ;;
  33 esac
  34
  35 cd include/openssl || exit 1
  36 grep "$PAT" *  | grep -v ERR_FATAL_ERROR | awk '{print $3;}' | sort -u >$X1
  37 cd ../..
  38
  39 for F in `cat $X1` ; do
  40     git grep -l --full-name -F $F >$X2
  41     NUM=`wc -l <$X2`
  42     test $NUM -gt 2 && continue
  43     if grep -q $F crypto/err/openssl.ec ; then
  44         echo Possibly unused $F found in openssl.ec
  45         continue
  46     fi
  47     echo $F
  48     for FILE in `cat $X2` ; do
  49         grep -v -w $F <$FILE >$FILE.new
  50         mv $FILE.new $FILE
  51     done
  52 done
  53
  54 rm $X1 $X2