#! /bin/bash -e
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
# SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
# SPDX-FileContributor: 2003-22 Bradley M. Bell
# ----------------------------------------------------------------------------
if [ ! -e "bin/check_example.sh" ]
then
   echo "bin/check_example.sh: must be executed from its parent directory"
   exit 1
fi
# -----------------------------------------------------------------------------
echo "Checking that all examples are in xrst/example_list.xrst"
echo "-------------------------------------------------------"
file_list=`git ls-files | sed -n \
   -e '/^example\/deprecated\//d' \
   -e '/^example\//p'`
#
sed < xrst/example_list.xrst > check_example.$$ \
   -n -e '/[$]begin list_all_examples\$\$/,/\$end/p'
#
# Make sure all example names are of the form *.cpp or *.hpp
check=`sed -n -e '/$rref [0-9a-zA-Z_]*\.[hc]pp/d' \
   -e '/$rref/p' check_example.$$`
if [ "$check" != '' ]
then
   echo $check
   echo 'Not all examples are for *.hpp or *.cpp files'
   exit 1
fi
ok="yes"
for file in $file_list
do
   # only files in example directory with [$]begin *.cpp or *.hpp
   # e.g., example/multi_thread/harmonic.xrst has [$]begin harmonic.cpp$$ in it
   name=`grep '[$]begin *[0-9a-zA-Z_]*\.[hc]pp' $file |
      sed -e 's/.*[$]begin *//' -e 's/ *$$.*//'`
   if [ "$name" != "" ]
   then
      if ! grep "$name" check_example.$$ > /dev/null
      then
         echo "$name is missing from xrst/example_list.xrst"
         ok="no"
      fi
   fi
done
rm check_example.$$
echo "-------------------------------------------------------"
if [ "$ok" != "yes" ]
then
   echo "Error: nothing should be between the two dashed lines above"
   exit 1
fi
#
# fix sort order; see
# unix.stackexchange.com/questions/87745/what-does-lc-all-c-do/87763#87763
export LC_ALL='C'
#
dir_list='
   example/graph
   example/json
   example/general
'
for dir in $dir_list
do
   echo "Checking $dir file versus example names"
   name=`echo $dir | sed -e 's|.*/||'`
   #
   ls $dir/*.cpp | sed  \
      -e "s|$dir/||" -e "/^$name\\.cpp/d" -e 's|\.cpp||' > check_example.1.$$
   if [ "$name" == 'general' ]
   then
      list=`ls $dir/*.hpp \
         | sed -e "s|$dir/||" -e 's|\.hpp$||' -e '/^general$/d'`
      for file in $list
      do
         sed -i check_example.1.$$ -e "/^$file\$/d"
      done
   fi
   sed -n -e '/^extern bool [a-z0-9A-Z_]*(void);/p' $dir/$name.cpp \
      | sed -e 's/extern bool \([a-z0-9A-Z_]*\)(void);/\1/' \
      | sed -e 's/\([a-z]\)\([A-Z]\)/\1_\2/g' \
      | tr '[A-Z]' '[a-z]' \
      | sort > check_example.2.$$
   if ! diff check_example.1.$$ check_example.2.$$
   then
      rm check_example.1.$$ check_example.2.$$
      echo "$dir: file and function names do not agree"
      echo 'see output above.'
      exit 1
   fi
done
rm check_example.1.$$ check_example.2.$$
#
echo 'bin/check_example.sh: OK'
exit 0
