# Copyright (C) 2005, 2007, 2012 INRIA
#
# This file is part of GNU MPC.
#
# GNU MPC is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.
#
# GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
# more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see http://www.gnu.org/licenses/ .

#!/bin/bash

# to compute the coverage of mpc-x.y.z, just copy this script
# into mpc-x.y.z/tools and run it

# Set up the right directoy
cd $(dirname $0)/..

# First Build MPC in /tmp/
echo "Erasing previous /tmp/ompc-gcov"
rm -rf /tmp/ompc-gcov
mkdir /tmp/ompc-gcov || exit 1

echo "Copying MPC sources to /tmp/ompc-gcov"
cp -r . /tmp/ompc-gcov || exit 1
cd /tmp/ompc-gcov || exit 1

echo "Remove previous coverage information."
rm -f $(find . -name '*.gc*')

echo "Reconfiguring MPC"
autoreconf -fi || exit 1

echo "Building MPC"
./configure --disable-shared --enable-static \
  CFLAGS="-fprofile-arcs -ftest-coverage -g"  || exit 1
make clean  || exit 1
make all -j4 || exit 1

# Note: we want to compute the coverage even in case of failure of some tests.
make check

# Check version of gcov:
# 3.3 outputs like this:
#  100.00% of 36 lines executed in function mpc_add
#  100.00% of 36 lines executed in file add.c
#  Creating add.c.gcov.
# It doesn't support gcov *.c
#
# gcov (GCC) 3.4 outputs like this:
#  Function `mpc_add'
#  Lines executed:100.00% of 36
#
#  File `add.c'
#  Lines executed:100.00% of 36
#  add.c:creating `add.c.gcov'
# It supports gcov *.c

# Setup the parser depending on gcov
version=$(gcov --version | head -1 | cut -f2 -d')')
version=$(( $(echo "$version" | cut -f1 -d'.')*100 + $(echo "$version" | cut -f1 -d'.')*10 ))
if test "$version" -ge 340 ; then
 echo "#!/bin/bash
while true ; do
 if read x ; then
 case \$x in
   Function*)
     read y
     case \$y in
      *100.00*)
       ;;
      *)
       echo \$x \$y
       ;;
     esac
     ;;
 esac
 else
   exit 0
 fi
done
" > coverage.subscript
else
 echo "#!/bin/bash
while true ; do
 if read x ; then
 case \$x in
   100.00*)
     ;;
   *function*)
     echo \$x
     ;;
 esac
 else
   exit 0
 fi
done
" > coverage.subscript
fi

# Do "gcov" for all files and parse the output
cd src
for i in $(find . -name '*.c')
do
    gcov -f $i -o $(dirname $i) 2> /dev/null || exit 1
done | bash ../coverage.subscript | grep -v '__gmp' > ../coverage.mpc

rm -f coverage.subscript coverage-tmp || exit 1

cd -
lcov --capture --directory . --output-file all.info || exit 1
genhtml -o coverage all.info || exit 1

echo "Coverage summary saved in file    /tmp/ompc-gcov/coverage.mpc"
echo "Detailed coverage is available at /tmp/ompc-gcov/coverage/index.html"