#compdef -P (tiff*|*2tiff|pal2rgb)

local pat expl ret=1

if [[ "$service" = *2tiff ]]; then
  pat="*.(#i)${service}(-.)"
else
  pat='*.(#i)tiff(-.)'
fi

if [[ $# -ne 0 || $+_in_tiff -ne 0 ]]; then
  if (( ! $# )); then
    _description files expl 'picture file'
    set -- "$expl[@]"
  fi
  _wanted files expl 'picture file' _path_files "$@" -g "$pat" - ||
      _files "$@" "$expl[@]" -g '*.(#i)tiff(-.)'
  return
fi

local _in_tiff=yes

local curcontext="$curcontext" state line ret=1
typeset -A opt_args

case "$service" in
tiff2bw)
  _arguments -C \
    '-c[specify compression scheme]:compression scheme:->compress' \
    '-r[specify rows per strip]:rows per strip' \
    '-R[specify percentage of red channel]:percentage of red channel' \
    '-G[specify percentage of green channel]:percentage of green channel' \
    '-B[specify percentage of blue channel]:percentage of blue channel' \
    ':input file:_files -g "*.(#i)tif(|f)(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiff2ps)
  _arguments \
    '-1[generate PostScript Level I output]' \
    '-2[generate PostScript Level II output]' \
    '-a[generate output for all IFDs]' \
    '-d[set initial TIFF directory]:initial TIFF directory' \
    '(-p)-e[generate Encapsulated PostScript]' \
    '-o[set initial TIFF directory (file offset)]:file offset' \
    '(-e)-p[generate non-Encapsulated PostScript]' \
    '-h[set page height]:page height' \
    '-w[set page width]:page width' \
    '-8[disable use of ASCII85 encoding]' \
    '-D[print two pages per sheet]' \
    '-O[specify output file]:output file:_files -g "*.(#i)ps(-.)"' \
    '-s[generate output for a single image]' \
    '-T[print pages for top edge binding]' \
    '*:input TIFF file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffcmp)
  _arguments \
    '-l[list all differing bytes]' \
    '-t[ignore differences in directories]' \
    ':first input TIFF file:_files -g "*.(#i)tif(|f)(-.)"' \
    ':second input TIFF file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffcp)
  _arguments -C \
    '-B[write output in bin-endian byte order]' \
    '-c[specify compression scheme]:compression scheme:->compress' \
    '-o[set initial TIFF directory (file offset)]:file offset' \
    '-p[set sample packing]:sample packing:(contig separate)' \
    '(-t)-s[write output in strips]' \
    '(-s)-t[write output in tiles]' \
    '-i[ignore read errors]' \
    '-r[specify rows per strip]:rows per strip' \
    '-w[specify output tile width]:output tile width' \
    '-l[specify output tile length]:output tile length' \
    '-f[specify fill order]:fill order:(lsb2msb msb2lsb)' \
    '*:input TIFF file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffdither)
  _arguments -C \
    '-c[specify compression scheme]:compression scheme:->compress' \
    '-f[specify fill order]:fill order:(lsb2msb msb2lsb)' \
    '-r[specify rows per strip]:rows per strip' \
    '-t[set threshold for dithering]:dither threshold value' \
    ':input file:_files -g "*.(#i)tif(|f)(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffdump)
  _arguments \
    '-o[set initial TIFF directory (file offset)]:file offset:' \
    '-h[print numbers in hexadecimal]' \
    '*:input TIFF file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffinfo)
  _arguments \
    '-c[display colormap and color/gray response curves]' \
    '-D[read and decompress data]' \
    '-d[print decompressed data]' \
    '-j[display JPEG-related tags]' \
    '-o[set initial TIFF directory (file offset)]:file offset' \
    '-s[display offsets and byte counts for all data strips]' \
    '-i[ignore read errors]' \
    '-f[force fill order]:fill order:(lsb2msb msb2lsb)' \
    '-w[display raw data in words]' \
    '*:input TIFF file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffmedian)
  _arguments -C \
    '-r[specify rows per strip]:rows per strip' \
    '-C[specify number of colormap entries]:number of colormap entries' \
    '-c[specify compression scheme]:compression scheme:->compress' \
    '-f[use Floyd-Steinberg dithering]' \
    ':input file:_files -g "*.(#i)tif(|f)(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
tiffsplit)
  _arguments \
    ':input file:_files -g "*.(#i)tif(|f)(-.)"' \
    ':output file prefix' && ret=0
  ;;
fax2tiff)
  _arguments \
    '(-1 -4)-2[input is Group 3, 2d encoded]' \
    '(-2 -4)-1[input is Group 3, 1d encoded]' \
    '(-1 -2)-4[input is Group 4 encoded]' \
    '(-W)-B[0 in input is black]' \
    '(-B)-W[0 in input is white]' \
    '(-M)-L[input is lsb-to-msb]' \
    '(-L)-M[input is msb-to-lsb]' \
    '-R[specify resolution]:resolution (lines per inch)' \
    '-o[specify output file]:output file:_files -g "*.(#i)tif(|f)(-.)"' \
    '(-f)-c[generate `classic'"'"' TIFF format]' \
    '(-c)-f[generate TIFF Class F format]' \
    '-m[output in msb-to-lsb order]' \
    "-p[don't align EOL codes]" \
    '-s[duplicate all rows]' \
    '-v[verbose mode]' \
    ':FAX input file:_files -g "*.(#i)(g[34]|fax)(-.)"' && ret=0
  ;;
gif2tiff)
  _arguments -C \
    '-r[specify rows per strip]:rows per strip' \
    '-c[specify compression scheme]:compression scheme:->compress' \
    ':input GIF file:_files -g "*.(#i)gif(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
ppm2tiff)
  _arguments -C \
    '-r[specify rows per strip]:rows per strip' \
    '-c[specify compression scheme]:compression scheme:->compress' \
    '-R[specify resolution]:resolution:' \
    ':input GIF file:_files -g "*.(#i)ppm(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
ras2tiff)
  _arguments -C \
    '-r[specify rows per strip]:rows per strip' \
    '-c[specify compression scheme]:compression scheme:->compress' \
    ':input raster image file:_files -g "*.(#i)ras(|t)(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
pal2rgb)
  _arguments -C \
    '-C[specify number of bits for colormap entries]:bits for colormap entries:(8 16)' \
    '-p[set sample packing]:sample packing:(contig separate)' \
    '-c[specify compression scheme]:compression scheme:->compress' \
    '-r[specify rows per strip]:rows per strip' \
    ':input file:_files -g "*.(#i)tif(|f)(-.)"' \
    ':output file:_files -g "*.(#i)tif(|f)(-.)"' && ret=0
  ;;
*)
  _description files expl 'picture file'
  _files "$expl[@]" -g "$pat" && ret=0
esac

if [[ -n "$state" ]]; then
  if [[ "$PREFIX" = *:* ]]; then
    local scheme="${PREFIX%%:*}"

    compset -P 1 '*:'

    case "$scheme" in
    g3)
      _values -s : 'FAX Group 3 options' \
        '(2d)1d[use 1D-encoding]' \
        '(1d)2d[use 2D-encoding]' \
	'fill[byte-align EOL codes]' && ret=0
      ;;
    jpeg)
      _message -e values "compression quality (0-100), or \`r' (output RGB)"
      ret=0
      ;;
    lzw|zip)
      _values 'LZW and deflate options' \
        '1[without differencing]' \
        '2[with differencing]' && ret=0
      ;;
    esac
  else
    _tags values
    while _tags; do
      while _next_label values expl 'compression scheme'; do
        compadd "$expl[@]" - none g4 packbits && ret=0
        compadd "$expl[@]" -qS: - lzw zip jpeg g3 && ret=0
      done
      (( ret )) || return 0
    done
  fi
fi

return ret