Factored common functionality out of the Courgette stress test scripts

courgette/run_stress_test

 #!/bin/bash
 
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Stress test and size measurement for courgette patches.
 
-error() {
-  echo "error: ${@}" >&2
-}
+source "$(dirname ${0})/stress_test_common"
 
 outdir_prefix="stress_test_"
 time="/usr/bin/time"
 
 if [ $# -lt 2 ]; then
   cat <<EOF
 
 USAGE: $(basename ${0}) [-s] dir1 dir2 [outdir]
 
   -s only test files supported by courgette
@@ skipping 134 matching lines @@
     courgette -supported "${file1}" >/dev/null
     if [ "${?}" -ne 0 ]; then
       continue;
     fi
   fi
   run_test "${file1}" "${file2}"
 done 2>&1 | tee -a "${log}"
 
 date >> "${log}"
 
-count_result() {
-  if [ ! -z "${1}" ]; then
-    echo $(cat "${log}" | grep "^${1} " | wc -l)    
-  else
-    echo 0
-  fi
-}
-
 cat <<EOF | tee -a "${log}"
 $(count_result "PASS_COURGETTE") successful courgette patches
 $(count_result "FAIL_COURGETTE") failed courgette patches (search log for \
 "^FAIL_COURGETTE")
 $(count_result "FAIL_DISASSEMBLE") failed to disassemble/assemble (search log \
 for "^FAIL_DISASSEMBLE")
 $(count_result "PASS_BSDIFF") succesful bsdiff patches
 $(count_result "FAIL_BSDIFF") failed bsdiff patches
 $(count_result "BEST_COURGETTE") patch(es) where courgette (bz2) is smaller
 $(count_result "BEST_BSDIFF") patch(es) where bsdiff is smaller (bz2)
 $(count_result "BEST_TIE") patch(es) where both are the same size (bz2)
 $(count_result "XZBEST_COURGETTE") patch(es) where courgette (xz) is smaller
 $(count_result "XZBEST_BSDIFF") patch(es) where bsdiff is smaller (xz)
 $(count_result "XZBEST_TIE") patch(es) where both are the same size (xz)
 EOF