#!/bin/sh
# original MakeTeXPK -- make a new PK font, because one wasn't found.
# Version of 12dec94.
# 
# (If you change or delete the word `original' on the previous line,
# installation won't write this MakeTeXPK over yours.)
#
# This script must echo the name of the generated PK file (and nothing
# else) to standard output. Yes, this is different from the original dvips.
# 
# Parameters:
#   name dpi bdpi magnification [mode [destdir]]
#
#   `name' is the base name of the font, such as `cmr10'.
#   `dpi' is the resolution the font is needed at.
#   `bdpi' is the base resolution, used to intuit the mode to use.
#   `magnification' is a string to pass to MF as the value of `mag'.
#   `mode', if supplied, is the mode to use. Unless it's `default', in
#     which case we guess. (This is so people can specify a destdir
#     without a mode.)
#   `destdir', if supplied, is either the absolute directory name to use
#     (if it starts with a /) or relative to the default DESTDIR (if not).

# The root of where to put the new file. (Using the sh construct
# ${var=value} is the tersest construct that lets an environment
# variable `var' override the value given here.)
: ${DESTROOT=${MTPK_DESTROOT-@fontdir@}}

# Define to `gsftopk' or `ps2pk' or whatever to make PK files for
# PostScript fonts. If this is defined, PSMAPFILE must also be defined to
# be your psfonts.map file or some equivalent.
: ${ps_to_pk=gsftopk}
: ${PSMAPFILE=@psheaderdir@/psfonts.map}

# Location of the files that map font name parts to directory names.
: ${NAMEMAPDIR=@fontnamedir@}

# This is needed only if all the font directories were not included in
# the compile-time path for gsftopk. 
: ${DVIPSHEADERS=@datadir@/ghostscript/type1:}

# If this directory doesn't exist, the DC fonts won't be attempted.
: ${dcfontdir=@dcfontdir@}

# If this directory doesn't exist, the Sauter stuff won't be attempted.
: ${sauterdir=@sauterdir@}

# If the true typeface directory cannot be determined from the fontname,
# the files are installed here, relative to $DESTROOT.
: ${default_namepart=tmp/pk}

# TEMPDIR needs to be unique for each process because of the possibility
# of processes simultaneously running this script.
TEMPDIR=${TMPDIR-/tmp}/mtpk.$$

if test $# -lt 4; then
  echo "Usage: $0 name dpi bdpi mag [mode [destdir]]." >&2
  exit 1
fi

NAME=$1
DPI=$2
BDPI=$3
MAG=$4
MODE=$5

# DESTDIR is harder.
case "$6" in
  "")
      # Nothing specified, so try to intuit the directory from the
      # fontname. First the special cases: either $NAME matches an entire
      # name in special.map, or it matches the abbreviation in
      # special.map and ends with a numeral (for the pointsize).
      # We (painfully) use only the minimal features in original awk.
      if test -r $NAMEMAPDIR/special.map; then
        namepart=`awk \
'{if ($1 == NAME || (substr (NAME, 1, length ($1)) == $1 \
                      && substr (NAME, length (NAME), 1) ~ /[0-9]/)) \
     { print $2 "/" $3; exit; }}' NAME=$NAME $NAMEMAPDIR/special.map`

        if test -z "$namepart"; then
          # Try the normal case. Source first.
          s_abbrev=`echo $NAME | cut -c 1-1`
          sourcedir=`awk '{ if ($1 == s_abbrev) { print $2; exit; }}' \
                     s_abbrev=$s_abbrev $NAMEMAPDIR/source.map`

          if test -n "$sourcedir"; then
            # We found the source. Try for the typeface.
            t_abbrev=`echo $NAME | cut -c 2-3`
            typefacedir=`awk '{ if ($1 == t_abbrev) { print $2; exit; }}' \
                         t_abbrev=$t_abbrev $NAMEMAPDIR/typeface.map`

            if test -n "$typefacedir"; then
              # Found everything.
              namepart=$sourcedir/$typefacedir

            else
              echo "$0: Could not map typeface abbreviation $t_abbrev." >&2
            fi
          else
            echo "$0: Could not map source abbreviation $s_abbrev." >&2
          fi
        fi
      else
        # No map files.
        :
      fi
      if test -z "$namepart"; then
        # If we failed for whatever reason, default to a generic subdir.
        namepart=$default_namepart
      else
        # Otherwise, get the `pk' in before we append the mode.
        namepart=$namepart/pk 
      fi
      
      # Finally, update the parent of the installation directory.
      DESTROOT="$DESTROOT/$namepart"
      ;;
  /*) DESTDIR=$6;;           # Absolute, explicit destdir => use it.
   *) DESTDIR=$DESTROOT/$6;; # Relative destdir => append to the default.
esac

GFNAME=$NAME.$DPI'gf'
PKNAME=$NAME.$DPI'pk'

# Clean up on normal or abnormal exit. DESTDIR changes, hence the eval.
# AmigaOS hack:  Add a sleep to work around a race condition that allows
# for a dying process to hold a lock on TEMPDIR long enough to prevent
# it from being immediately deleted.
trap "cd /; sleep 5; eval rm -rf $TEMPDIR \$DESTDIR/pktmp.$$" 0 1 2 15

# Allow fonts to be read and written (especially in case we make
# directories) by everyone.  
umask 0

# Possible local customizations?
test -r @web2cdir@/MakeTeXPK.site && . @web2cdir@/MakeTeXPK.site

# Remember where we were for the paths. We'd most like to replace `.',
# wherever it is in the path, with $SAVEPWD, but we don't have access to the
# compile-time path. So we are conservative, and put this at the end.
SAVEPWD=`pwd`

# Go to the unique working directory.
test -d $TEMPDIR || mkdir $TEMPDIR 
cd $TEMPDIR || exit 1

# grep for the font in $PSMAPFILE, if some ps-to-pk is claimed to be supported.
# We have to figure out the name of the base font -- $NAME is probably
# something like pplr, but it's rpplr or pplr0 or pplr8r that's in psfonts.map.
pattern="^r?$NAME"'(0|8r)?([ 	]|$)' 
test -n "$ps_to_pk" && egrep "$pattern" $PSMAPFILE >psline
if test -s psline; then
  # This is a PostScript font.
  MODE=$ps_to_pk
  case $ps_to_pk in
       ps2pk*) special_part=`cat psline | sed -e 's/^.*"//' -e 's/".*$//'`
               # .167 SlantFont
               slant=`echo $special_part \
                      | awk '{ if ($2 == SlantFont) print "-S" $1 }'`
               extend=`echo $special_part \
                       | awk '{ if ($2 == ExtendFont) print "-E" $1 }'`
               cmd="$ps_to_pk -v -X$DPI $slant $extend $NAME";;
            *) cmd="$ps_to_pk $NAME $DPI";;
  esac

  # Update DESTDIR for new mode, and check if we were spuriously called.
  test -z "$6" && DESTDIR="$DESTROOT/$MODE"
  if test -r $DESTDIR/$PKNAME; then # sigh, this is repeated below
    echo "$0: $DESTDIR/$PKNAME already exists." >&2
    echo $DESTDIR/$PKNAME
    exit 0
  fi

  DVIPSHEADERS="$DVIPSHEADERS:$SAVEPWD"
  export DVIPSHEADERS
  echo "$0: Running $cmd" >&2
  $cmd >&2 || { echo "$0: $ps_to_pk failed." >&2; exit 1; }

else
  # Try Metafont.
  MFINPUTS="$MFINPUTS:$SAVEPWD"
  export MFINPUTS

  # If an explicit mode is not supplied, try to guess. You can get a
  # list of extant modes from ftp.cs.umb.edu:pub/tex/modes.mf.
  if test -z "$MODE" || test "$MODE" = default; then
    case "$BDPI" in
      85) MODE=sun;;
     300) MODE=cx;;
     600) MODE=ljfour;;
    1270) MODE=linolo;;
       *) echo "$0: Can't guess mode for $BDPI dpi devices." >&2
          echo "$0: Use a config file, or update me." >&2
          exit 1
    esac
  fi

  # If no destination directory specified, install font in directory
  # named for the mode.
  test -z "$6" && DESTDIR="$DESTROOT/$MODE"

  if test -r $DESTDIR/$PKNAME; then # sigh, this is repeated above
    echo "$0: $DESTDIR/$PKNAME already exists." >&2
    echo $DESTDIR/$PKNAME
    exit 0
  fi

  # Run Metafont. Always use plain Metafont, since reading cmbase.mf
  # does not noticeably slow things down. Separate the filename from the
  # rest, since we have to use ./$NAME if we generate something.
  cmd="mf \mode:=$MODE; mag:=$MAG; scrollmode; input"
  echo "$0: Running $cmd $NAME" >&2
  if $cmd $NAME </dev/null >&2; then
    : # Success already.
  
  else
    # These other cases should really be part of MakeTeXMF.
    # First have to figure out the real magnification, which means
    # extracting the point size from the name -- a trailing number.
    rootname=`echo $NAME | sed 's/[0-9]*$//'`
    pointsize=`echo $NAME | sed "s/^$rootname//"`
    case "$pointsize" in
      11) realsize=10.95444;;	# \magstephalf
      14) realsize=14.4;;	# \magstep2
      17) realsize=17.28;;	# \magstep3
      20) realsize=20.74;;	# \magstep4
      25) realsize=24.88;;	# \magstep5
       *) realsize=$pointsize;;
    esac
    mfname=$NAME.mf
    rm -f $mfname # We are in $TEMPDIR, so this is safe.

    if test -z "$pointsize"; then
      # No point size, so it can't be a DC or Sauter font. Give up.
      :

    elif echo $NAME | grep '^dc' >/dev/null; then
      echo "$0: Trying DC font." >&2
      echo "if unknown dxbase: input dxbase fi;" >$mfname
      echo "gensize:=$realsize;" >>$mfname
      echo "generate $rootname." >>$mfname
      echo "$0: Running $cmd ./$NAME" >&2
      $cmd ./$mfname </dev/null >&2

    elif test -d $sauterdir; then
      echo "$0: Trying interpolated/extrapolated (Sauter) font." >&2
      echo "design_size:=$realsize;" >>$mfname
      echo "input b-$rootname;" >>$mfname
      echo "$0: Running $cmd ./$NAME" >&2
      $cmd ./$mfname </dev/null >&2
      # Result should go in the sauterdir, not the cm dir.
      test -z "$6" && $DESTDIR=$sauterdir/pk/$MODE
    fi # alternative mf sources
  fi # first mf failed
  
  # If we couldn't make the font, quit.
  test -r $GFNAME || \
    { echo "$0: Metafont failed to make $GFNAME." >&2; exit 1; }

  # Success.  Make the PK file.
  gftopk ./$GFNAME $PKNAME || exit 1
fi

# If we get here, we've succeeded; move the final font to $DESTDIR.
test -d $DESTDIR \
  || mkdir $DESTDIR \
  || { echo "$0: Could not mkdir $DESTDIR." >&2; exit 1; }

# Install the PK file carefully, since others may be working simultaneously.
# Note that we use cp+rm rather than mv since mv may not work across filesystems.
cp $PKNAME $DESTDIR/pktmp.$$ \
  || { echo "$0: Could not cp $PKNAME $DESTDIR/pktmp.$$." >&2; exit 1; }
rm $PKNAME \
  || { echo "$0: Could not rm $PKNAKE." >&2; exit 1; }

cd $DESTDIR || exit 1
mv pktmp.$$ $PKNAME

# If this line (or an equivalent) is not present, dvipsk/xdvik/dviljk
# will think MakeTeXPK failed.  Any other output to stdout will also lose.
echo $DESTDIR/$PKNAME
