#! /bin/sh -
#
# octave-bug - create a bug report and mail it to the bug-octave
# mailing list.
#
# Patterned after the bashbug script from bash 1.14.
#
# John W. Eaton
# jwe@bevo.che.wisc.edu
# University of Wisconsin-Madison
# Department of Chemical Engineering

# Configuration:  these variables are filled in when running make to
# compile Octave.

config_opts=%config_opts%
VERSION=%VERSION%
MACHINE=%TARGET_HOST_TYPE%
F77=%F77%
FFLAGS=%FFLAGS%
FPICFLAG=%FPICFLAG%
FLIBS=%FLIBS%
F2C=%F2C%
F2CFLAGS=%F2CFLAGS%
CPPFLAGS=%CPPFLAGS%
INCFLAGS=%INCFLAGS%
CC=%CC%
CC_VERSION=%CC_VERSION%
CFLAGS=%CFLAGS%
CPICFLAG=%CPICFLAG%
CXX=%CXX%
CXX_VERSION=%CXX_VERSION%
CXXFLAGS=%BUG_CXXFLAGS%
CXXPICFLAG=%CXXPICFLAG%
LDFLAGS=%LDFLAGS%
LIBFLAGS=%LIBFLAGS%
RLD_FLAG=%RLD_FLAG%
TERMLIBS=%TERMLIBS%
LIBS=%LIBS%
LEXLIB=%LEXLIB%
LIBPLPLOT=%LIBPLPLOT%
LIBDLFCN=%LIBDLFCN%
DEFS=%DEFS%

CC_AND_VERSION=
if test -n "$CC_VERSION"; then
  CC_AND_VERSION="$CC, version $CC_VERSION"
fi

CXX_AND_VERSION=
if test -n "$CXX_VERSION"; then
  CXX_AND_VERSION="$CXX, version $CXX_VERSION"
fi

PATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:$PATH
export PATH

TEMP=/tmp/octave-bug.$$

: ${EDITOR=emacs}
: ${PAGER=more}

trap 'rm -f $TEMP $TEMP.x; exit 1' 1 2 3 13 15
trap 'rm -f $TEMP $TEMP.x' 0

UN=
if (uname) > /dev/null 2>&1; then
  UN=`uname -a`
fi

HAVE_FMT=false
if (fmt < /dev/null) > /dev/null 2>&1; then
  HAVE_FMT=true
fi

# Check whether to use -n or \c to keep echo from printing a newline
# character.  Stolen from autoconf, which borrowed the idea from dist 3.0.

if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
  # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
    echo_n=
    echo_c='
'
  else
    echo_n=-n
    echo_c=
  fi
else
  echo_n=
  echo_c='\c'
fi

ss_p=`echo $VERSION | grep "^ss-"`
if test -n "$ss_p"; then
  BUGADDR="octave-maintainers@bevo.che.wisc.edu"
else
  pretest_p=`echo $VERSION \
    | sed 's,.*\.\([0-9]*\).*,\1,' \
    | grep -v '\.' \
    | grep '[0-9]'`

  if test -n "$pretest_p" && test "$pretest_p" -ge 90; then
    BUGADDR="octave-maintainers@bevo.che.wisc.edu"
  else
    BUGADDR="bug-octave@bevo.che.wisc.edu"
  fi
fi

SUBJECT="[50 character or so descriptive subject here (for reference)]"
if test $# -gt 0; then
  case "$1" in
    -s)
      shift
      if test $# -gt 0; then
        SUBJECT="$1"
        shift
      else
        echo "usage: octave-bug [-s subject]"
        exit 1
      fi
    ;;
  esac
fi

cat > $TEMP << EOF
To: $BUGADDR
Subject: $SUBJECT
--------
Bug report for Octave $VERSION configured for $MACHINE

Description:
-----------

  * Please replace this item with a detailed description of the
    problem.  Suggestions or general comments are also welcome.

Repeat-By:
---------

  * Please replace this item with a description of the sequence of
    events that causes the problem to occur. 

Fix:
---

  * If possible, replace this item with a description of how to
    fix the problem (if you don't have a fix for the problem, don't
    include this section, but please do submit your report anyway).



Configuration (please do not edit this section):
-----------------------------------------------

uname output:     $UN
configure opts:   $config_opts
Fortran compiler: $F77
FFLAGS:           $FFLAGS
F2C:              $F2C
F2CFLAGS:         $F2CFLAGS
FLIBS:            $FLIBS
CPPFLAGS:         $CPPFLAGS
INCFLAGS:         $INCFLAGS
C compiler:       $CC_AND_VERSION
CFLAGS:           $CFLAGS
CPICFLAG:         $CPICFLAG
C++ compiler:     $CXX_AND_VERSION
CXXFLAGS:         $CXXFLAGS
CXXPICFLAG:       $CXXPICFLAG
LDFLAGS:          $LDFLAGS
LIBFLAGS:         $LIBFLAGS
RLD_FLAG:         $RLD_FLAG
TERMLIBS:         $TERMLIBS
LIBS:             $LIBS
LEXLIB:           $LEXLIB
LIBPLPLOT:        $LIBPLPLOT
LIBDLFCN:         $LIBDLFCN
DEFS:

EOF

if $HAVE_FMT; then
  echo $DEFS | fmt | sed 's/^/  /' >> $TEMP
else
  echo $DEFS >> $TEMP
fi

if test $# -gt 0; then
  if test -f "$1"; then
    cat >> $TEMP << EOF

User-preferences (please do not edit this section):
--------------------------------------------------

EOF
    cat $1 >> $TEMP
  fi
fi

chmod u+w $TEMP
cp $TEMP $TEMP.x

status=0

editing=true

while $editing; do
  if $EDITOR $TEMP; then
    while $editing; do
      echo $echo_n "(a)bort, (e)dit, (l)ist, (s)end? $echo_c"
      read ans
      case "$ans" in
        a* | A*)
          status=1
          editing=false
        ;;
        e* | E*)
          break;
        ;;
        l* | L*)
          $PAGER $TEMP
        ;;
        s* | S*)
          editing=false
        ;;
      esac
    done
  else
    echo "problems with edit -- no bug report submitted"
    status=1
    editing=false
  fi
done

if test $status -eq 0; then
  if cmp -s $TEMP $TEMP.x; then
    echo "file not changed -- no bug report submitted"
    status=1
  elif test `wc $TEMP | awk '{print $1}'` -eq 0; then
    echo "empty bug report file -- not submitted"
    status=1
  else

# Try to extract the recipient address, in case the To: line in the
# message template has been changed.  Also get cc: lines.

    TO_ADDR=`sed -e '/^--------[ \t]*$/q' $TEMP | sed -n -e 's/^[Tt][Oo]://p'`
    CC_ADDR=`sed -e '/^--------[ \t]*$/q' $TEMP | sed -n -e 's/^[Cc][Cc]://p'`

    if test -z "$TO_ADDR"; then
      echo "no valid \`To:' field found in header -- using $BUGADDR instead"
    else
      BUGADDR="$TO_ADDR"      
    fi

    BUGADDR="$BUGADDR $CC_ADDR"

    TMP_SUB=`sed -e '/^--------[ \t]*$/q' $TEMP | sed -n -e 's/^Subject://p'`

    if test -n "$TMP_SUB"; then
      SUBJECT="$TMP_SUB"
    fi

# Delete the `--------' separator in the message.

# Don't pretty-print this.  Odd whitespace kills Ultrix AWK!

    awk 'BEGIN{in_header=1;} /^--------[ \t]*$/ {
      if (in_header) { in_header=0; print ""; next; }
    } { print $0; }' $TEMP > $TEMP.x

# Now try to mail it.

    ( /bin/mail $BUGADDR < $TEMP.x ) > /dev/null 2>&1
    status=$?
    if test $status -ne 0; then
      ( Mail -s "$SUBJECT" $BUGADDR < $TEMP.x ) > /dev/null 2>&1
      status=$?
      if test $status -ne 0; then
	( /usr/ucb/mail -s "$SUBJECT" $BUGADDR < $TEMP.x ) > /dev/null 2>&1
	status=$?
	if test $status -ne 0; then
	  ( mailx -s "$SUBJECT" $BUGADDR < $TEMP.x ) > /dev/null 2>&1
	  status=$?
	fi
      fi
    fi

    if test $status -ne 0; then
      echo "unable to send mail..."
    fi
  fi
fi

if test $status -ne 0; then
  echo "saving message in \$HOME/dead.octave-bug";
  cat $TEMP >> $HOME/dead.octave-bug;
  exit 1
else
  echo "bug report sent to: $TO_ADDR"
  echo "             cc to: $CC_ADDR"
fi

exit $status