#!/bin/sh
######################################################
#
# Test that the manpages don't have any syntax errors
# as detected by groff.
#
######################################################

# First find out whether we have a groff on the path:

# portable implementation of 'which' utility
findprog()
{
  FOUND=
  PROG="$1"
  IFS_SAVE="$IFS"
  IFS=:
  for D in $PATH; do
    if [ -z "$D" ]; then
      D=.
    fi
    if [ -f "$D/$PROG" ] && [ -x "$D/$PROG" ]; then
      printf '%s\n' "$D/$PROG"
      break
    fi
  done
  IFS="$IFS_SAVE"
}

if [ -z "$(findprog groff)" ]; then
  echo "Test $0 SKIP (missing groff)"
  exit 120
fi

cd $MH_TEST_DIR/share/man

# groff will still exit with status zero even if warnings
# were emitted, so we have to jump through hoops to
# find out if any were emitted.

expected=$MH_TEST_DIR/$$.expected
actual=$MH_TEST_DIR/$$.actual

# There aren't any expected warnings at the moment but
# this mechanism does let us add them if necessary later.
rm -f "$expected" "$actual"
touch "$expected" "$actual"

for manpage in man?/*.?; do
  groff -Tutf8 -mandoc -wmac "$manpage" > /dev/null 2>>"$actual"
done

diff -u "$expected" "$actual"