#!/bin/sh
#
# Survex test suite - diffpos tests
# Copyright (C) 1999-2025 Olly Betts
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see
# <https://www.gnu.org/licenses/>.

testdir=`echo $0 | sed 's!/[^/]*$!!' || echo '.'`

# allow us to run tests standalone more easily
: ${srcdir="$testdir"}
if [ -z "$SURVEXLIB" ] ; then
  SURVEXLIB=`cd "$srcdir/../lib" && pwd`
  export SURVEXLIB
fi

# force VERBOSE if we're run on a subset of tests
test -n "$*" && VERBOSE=1

test -x "$testdir"/../src/cavern || testdir=.

case `uname -a` in
  MINGW*)
    DIFF='diff --strip-trailing-cr'
    QUIET_DIFF='diff -q --strip-trailing-cr'
    ;;
  *)
    DIFF=diff
    # Use cmp when we can as a small optimisation.
    QUIET_DIFF='cmp -s'
    ;;
esac

: ${DIFFPOS="$testdir"/../src/diffpos}

: ${TESTS=${*:-"delatend addatend"}}

SURVEXLANG=en
export SURVEXLANG

# Suppress checking for leaks on exit if we're build with lsan - we don't
# generally waste effort to free all allocations as the OS will reclaim
# memory on exit.
LSAN_OPTIONS=leak_check_at_exit=0
export LSAN_OPTIONS

vg_error=123
vg_log=vg.log
if [ -n "$VALGRIND" ] ; then
  rm -f "$vg_log"
  DIFFPOS="$VALGRIND --log-file=$vg_log --error-exitcode=$vg_error $DIFFPOS"
fi

for file in $TESTS ; do
  echo $file
  rm -f diffpos.tmp
  $DIFFPOS "$srcdir/${file}a.pos" "$srcdir/${file}b.pos" > diffpos.tmp
  exitcode=$?
  if [ -n "$VALGRIND" ] ; then
    if [ $exitcode = "$vg_error" ] ; then
      cat "$vg_log"
      rm "$vg_log"
      exit 1
    fi
    rm "$vg_log"
  fi
  if ! $QUIET_DIFF diffpos.tmp "$srcdir/${file}.out" > /dev/null ; then
    [ -z "$VERBOSE"] || $DIFF diffpos.tmp "$srcdir/${file}.out"
    exit 1
  fi
  rm -f diffpos.tmp
done

for args in '' '--survey survey' '--survey survey.xyzzy' '--survey xyzzy' ; do
  echo "diffpos $args"
  rm -f diffpos.tmp
  $DIFFPOS $args "$srcdir/v0.3d" "$srcdir/v0.3d" > diffpos.tmp
  exitcode=$?
  if [ $exitcode != 0 ] ; then
    [ -z "$VERBOSE"] || cat diffpos.tmp
  fi
  if ! $QUIET_DIFF diffpos.tmp /dev/null > /dev/null ; then
    [ -z "$VERBOSE"] || $DIFF diffpos.tmp /dev/null
    exit 1
  fi
  rm -f diffpos.tmp
done
test -n "$VERBOSE" && echo "Test passed"
exit 0
