llppac

   1 #!/bin/sh
   2
   3 set -e
   4
   5 CACHEDIR=$HOME/.cache/llpp
   6
   7 die() {
   8     echo "$1" >&2
   9     exit 1
  10 }
  11
  12 executable_p() {
  13     command -v $1 >/dev/null 2>&1
  14 }
  15
  16 trap 'test -n "$casp" && rm -f $casp' 0
  17
  18 test -d $CACHEDIR || die "cache directory $CACHEDIR does not exist"
  19 while getopts m:t:f opt; do
  20     case "$opt" in
  21         m) mime="$OPTARG";;
  22         t) type="$OPTARG";;
  23         f) force="1";;
  24         ?)
  25         die "usage: $0 [-m mime/type] [-t filter] [-f] path";
  26         exit 1;;
  27     esac
  28 done
  29 shift $(($OPTIND - 1))
  30 test -z "$1" && die "usage $0: path"
  31
  32 ft=$(file -L --mime-type -b "$1") || die "$ft"
  33
  34 case $ft in
  35     application/x-gzip) dc=zcat;;
  36     application/x-xz) dc=xzcat;;
  37     application/x-bzip2) dc=bzcat;;
  38     *) unset dc || true;;
  39 esac
  40
  41 filt='${dc-cat} "$1" |'
  42
  43 if test -z $type; then
  44     test -z $dc || ft=$(file -L --mime-type -bz "$1") || die "$ft"
  45
  46     mime=${mime:-$ft}
  47     case $mime in
  48         application/postscript) type="ps";;
  49         application/pdf) type="pdf";;
  50         image/vnd.djvu) type="djvu";;
  51         text/html) type="html";;
  52         application/msword) type="word";;
  53         application/vnd.openxmlformats-officedocument.*  \
  54             | application/vnd.ms-powerpoint              \
  55             | application/vnd.ms-excel                   \
  56             | application/vnd.oasis.opendocument.*) type="uno";;
  57         image/svg+xml) type="svg";;
  58         image/*) type="image";;
  59         application/x-dvi) type="dvi";;
  60         *) die "unhandled file type: $mime";;
  61     esac
  62 fi
  63
  64 case $type in
  65     ps) conv='ps2pdf - $casp';;
  66     pdf) test -z $dc && exec llpp "$@" || conv='cat >$casp';;
  67     djvu) conv='djvups - | ps2pdf - $casp';;
  68     html) {
  69         test -n "$dc" && die "can not convert compressed $mime"
  70         unset filt
  71         conv='prince "$1" -o $casp'
  72     };;
  73     word) {
  74         if executable_p unoconv && test -z $dc; then
  75             unset filt
  76             conv='unoconv -o $casp "$1"'
  77         else
  78             conv='antiword -m 8859-1.txt -a a4 - >$casp'
  79         fi
  80     };;
  81     uno) {
  82         test -n "$dc" && die "can not convert compressed $mime"
  83         unset filt
  84         conv='unoconv -o $casp "$1"'
  85     };;
  86     svg) {
  87         executable_p rsvg-convert                        \
  88             && conv='rsvg-convert -f pdf -o $casp'       \
  89             || conv='inkscape -z -A $casp -'
  90     };;
  91     image) conv='convert - pdf:$casp';;
  92     dvi) {
  93         test -n "$dc" && die "can not convert compressed $mime"
  94         unset filt
  95         conv='dvipdf $1 $casp'
  96     };;
  97     *) die "unhandled filter type: $type";;
  98 esac
  99
 100 hash=$(md5sum "$1") || die "$hash"
 101 casp="$CACHEDIR/${hash%% *}"
 102 (test -n "$force" -o ! -e $casp) && eval "$filt" "$conv"
 103
 104 exec llpp -origin "$@" $casp