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 $ft in
  35     application/x-gzip | application/x-compress) dc=zcat;;
  36     application/x-xz) dc=xzcat;;
  37     application/x-bzip2) dc=bzcat;;
  38     *) unset dc || true;;
  39 esac
  40
  41 filt='"${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"