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#!/bin/sh # # anytopnm - attempt to convert an unknown type of image file to a P?M file. # # Copyright (C) 1991 by Jef Poskanzer. # # Permission to use, copy, modify, and distribute this software and its # documentation for any purpose and without fee is hereby granted, provided # that the above copyright notice appear in all copies and that both that # copyright notice and this permission notice appear in supporting # documentation. This software is provided "as is" without express or # implied warranty. putInputIntoTempfile() { # $1 is the input file specification # $2 is the temporary file name rm -f "$2" if [ "$1" = "-" ] ; then cat > "$2" else # We'd like to do a -e here to test the existence of the filesystem # object per se, and thus give a more specific error message. But # some systems don't have -e. if [ ! -f "$1" ] ; then echo "$progname: '$1' does not exist or is not a file" 1>&2 exit 1 fi if [ ! -r "$1" ] ; then echo "$progname: '$1' is not readable" 1>&2 exit 1 fi if [ -z "$1" ] ; then echo "$progname: '$1' is empty" 1>&2 exit 1 fi cat < "$1" > "$2" fi } setMimeType() { #------------------------------------------------------------------------------ # Set variable 'mimeType' to the mime type string (e.g. "application/binary") # # If we can't tell, set it to "unknown". #------------------------------------------------------------------------------ # $1 is the file name # Old versions of 'file' cannot tell us the mime type; they lack any option # to do so. # # Newer ones have a --mime option for that. # # Still newer ones (ca 2008) have a --mime option, but it does something # different - it prints the mime type plus the mime encoding. And they # have --mime-type to print just the mime type. file --mime-type /dev/null >/dev/null 2>/dev/null if [ $? -eq 0 ]; then # Now that we know the --mime-type option exists, use it. mimeType=`file --mime-type "$1" | cut -d: -f2- | cut -c2-` else # file --mime-type failed; we don't know why, but we assume it's # because it is an older 'file' program that doesn't have a --mime-type # option. file --mime /dev/null >/dev/null 2>/dev/null if [ $? -eq 0 ]; then # Now that we know the --mime option exists, use it. mimeType=`file --mime "$1" | cut -d: -f2- | cut -c2-` else # file --mime failed; we don't know why, but we assume it's because # it is an older 'file' program that doesn't have a --mime option. mimeType="unknown" fi fi } computeTypeFromMimeType () { # $1 is the mime type string case "$1" in image/jpeg ) filetype="jfif" ;; image/gif ) filetype="gif" ;; image/tiff ) filetype="tiff" ;; image/bmp ) filetype="bmp" ;; image/x-ms-bmp ) filetype="bmp" ;; image/png ) filetype="png" ;; image/x-portable-bitmap | image/x-portable-pixmap | \ image/x-portable-greymap) filetype="pnm" ;; image/x-xpm ) filetype="xpm" ;; * ) filetype=unknown ;; esac } computeTypeFromTypeDescription () { # $1 is the full description from 'file' of the file type case "$1" in *PBM* | *PGM* | *PPM* | *Netpbm*PAM*) filetype=pnm ;; *JPEG* | *JFIF* ) filetype=jfif ;; *PNG* ) filetype=png ;; *GIF* ) filetype=gif ;; *TIFF* ) filetype=tiff ;; # We have seen "PC bitmap" and "PC bitmap data" *PC*bitmap* ) filetype=bmp ;; *uuencoded* ) filetype=uuencoded ;; *bzip2*compressed*data* ) filetype=bzip2 ;; *bzip*compressed*data* ) filetype=bzip ;; *gzip*compressed*data* ) filetype=gzip ;; *XWD*X*Window*Dump* ) filetype=xwd ;; *compress* ) filetype=compress ;; *btoa* ) filetype=btoa ;; *Sun* | *rasterfile* ) filetype=rast ;; *IFF*ILBM* ) filetype=ilbm ;; *Lisp* ) filetype=lispm ;; *PC*Paintbrush* ) filetype=pcx ;; *Bennet* ) filetype=ybm ;; *pixmap*image*text* ) filetype=xpm ;; # This has to come after all other 'text' files, or you may be # disappointed. *text* ) filetype=text ;; *MicroDesign* ) filetype=mda ;; * ) filetype=unknown ;; esac } computeTypeFromFilenameExtension () { # $1 is the filename extension (".gif", etc.) case "$1" in *.pbm | *.pbm.* | *.pgm | *.pgm.* | *.ppm | *.ppm.* ) filetype=pnm ;; *.JPEG | *.jpeg | *.jpg | *.JPG ) filetype=jfif ;; *.gif | *.gif.* ) filetype=gif ;; *.png | *.PNG ) filetype=png ;; *.tif | *.tif.* | *.tiff | *.tiff.* ) filetype=tiff ;; *.bmp ) filetype=bmp ;; *.x | *.x.* | *.xbm | *.xbm.* | *.x10bm | *.x10bm.* | \ *.x11bm | *.x11bm.* | *.bitmap | *.bitmap.* ) filetype=xbm ;; *.r | *.r.* | *.rast | *.rast.* ) filetype=rast ;; *.mac | *.mac.* | *.macp | *.macp.* ) filetype=macp ;; *.g3 | *.g3.* | *.fax | *.fax.* ) filetype=g3 ;; *.xwd | *.xwd.* | *.x10wd | *.x10wd.* \ | *.x11wd | *.x11wd.* ) filetype=xwd ;; *.brush | *.brush.* ) filetype=brush ;; *.img | *.img.* ) filetype=gem ;; *.pcx | *.pcx.* ) filetype=pcx ;; *.pic | *.pic.* | *.pict | *.pict.* | *.pict2 | *.pict2.* ) filetype=pict ;; *.fs | *.fs.* | *.face | *.face.* ) filetype=fs ;; *.hips | *.hips.* ) filetype=hips ;; *.fits | *.fits.* ) filetype=fits ;; *.iff | *.iff.* | *.ilbm | *.ilbm.* ) filetype=ilbm ;; *.lispm | *.lispm.* ) filetype=lispm ;; *.mtv | *.mtv.* ) filetype=mtv ;; *.qrt | *.qrt.* ) filetype=qrt ;; *.tga | *.tga.* | *.targa | *.targa.* ) filetype=tga ;; *.xim | *.xim.* ) filetype=xim ;; *.xpm | *.xpm.* | *.xpm2 | *.xpm2.* ) filetype=xpm ;; *.pi1 | *.pi1.* ) filetype=pi1 ;; *.pi3 | *.pi3.* ) filetype=pi3 ;; *.spu | *.spu.* ) filetype=spu ;; *.spc | *.spc.* ) filetype=spc ;; *.ybm | *.ybm.* | *.face | *.face.* ) filetype=ybm ;; *.mda | *.mdp ) filetype=mda ;; * ) filetype=unknown ;; esac } determineType () { # $1 is the name of the file that contains the subject file's contents # $2 is the mime type or "unknown" # $3 is the type description from 'file' if [ "$2" = "unknown" ]; then filetype="unknown" else computeTypeFromMimeType "$2" fi if [ "$filetype" = "unknown" ]; then computeTypeFromTypeDescription "$3" fi if [ "$filetype" = "unknown" ]; then computeTypeFromFilenameExtension "$4" fi } convertIt () { # Based on the file type computed, do the conversion # $1 is the input file name # $2 is our file type code case "$2" in pnm ) cat "$file" ;; uuencoded ) newfile="$tempdir/atn.decode.$$" rm -f "$newfile" (echo begin 600 $newfile; sed 1d < "$file") | uudecode anytopnm "$newfile" ;; bzip2 ) bzip2 -dk < "$file" | anytopnm - ;; bzip ) bzip -dk < "$file" | anytopnm - ;; gzip ) gzip --decompress --to-stdout < "$file" | anytopnm - ;; compress ) uncompress -c < "$file" | anytopnm - ;; btoa ) atob < "$file" | anytopnm - ;; rast ) rasttopnm "$file" ;; gif ) giftopnm -image=all "$file" ;; tiff ) tifftopnm "$file" ;; ilbm ) ilbmtoppm "$file" ;; lispm ) lispmtopgm "$file" ;; pcx ) pcxtoppm "$file" ;; ybm ) ybmtopbm "$file" ;; xpm ) xpmtoppm < "$file" ;; # This has to come after all other 'text' files, or you may be # disappointed. text ) pbmtext -builtin fixed < "$file" ;; jfif ) jpegtopnm "$file" ;; png ) pngtopam "$file" ;; mda ) mdatopbm -d -- "$file" ;; bmp ) bmptoppm "$file" ;; xbm ) xbmtopbm "$file" ;; macp ) macptopbm "$file" ;; g3 ) g3topbm "$file" ;; xwd ) xwdtopnm "$file" ;; brush ) brushtopbm "$file" ;; img ) gemtopbm "$file" ;; pcx ) pcxtoppm "$file" ;; pict ) picttoppm "$file" ;; fs ) fstopgm "$file" ;; hips ) hipstopgm "$file" ;; fits ) fitstopnm "$file" ;; mtv ) mtvtoppm "$file" ;; qrt ) qrttoppm "$file" ;; tga ) tgatoppm "$file" ;; xim ) ximtoppm "$file" ;; pi1 ) pi1toppm "$file" ;; pi3 ) pi3topbm "$file" ;; spu ) sputoppm "$file" ;; spc ) spctoppm "$file" ;; * ) echo "$progname: INTERNAL ERROR. Illegal value of filetype variable" exit 1 ;; esac } ############################################################################### # MAINLINE ############################################################################### progname=$0 if [ $# -gt 1 ] ; then echo "Too many arguments: $#. The only valid argument is the" \ "input file name." 1>&2 exit 1 elif [ $# -eq 1 ] ; then if [ "$1" = "--version" -o "$1" = "-version" ] ; then pamtopnm --version ; exit $? else inputFile="$1" fi else inputFile="-" fi tempdir=$(mktemp -d "${TMPDIR:-/tmp}/anytopnm.XXXXXXXX") || { echo "Could not create temporary file. Exiting." 1>&2; exit 1; } trap 'rm -rf $tempdir' 0 # Take out all spaces # Find the filename extension for last-ditch efforts later # We used to do this, but it doesn't work with all Awks. The sed below # is universal. 2005.11.02. #fileExtension=`echo "$inputFile" | \ # $AWK '{gsub(" ","");gsub(".*\\\\.",".");print}'` fileExtension=`echo "$inputFile" | sed 's/ //;s/.*\././g'` file="$tempdir/atn.stdin.$$" putInputIntoTempfile "$inputFile" "$file" setMimeType "$file" typeDescription=`file "$file" | cut -d: -f2- | cut -c2-` determineType "$file" "$mimeType" "$typeDescription" "$fileExtension" if [ "$filetype" = "unknown" ]; then echo "$progname: unknown file type. " \ "'file' says mime type is '$mimeType', " 1>&2 echo "type description is '$typeDescription'" 1>&2 exit 1 fi convertIt $file $filetype exit 0