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         ?) die "usage: $0 [-m mime/type] [-t filter] [-f] path";;
  25     esac
  26 done
  27 shift $(($OPTIND - 1))
  28 test -z "$1" && die "usage $0: path"
  29
  30 ft=$(file -L --mime-type -b "$1") || die "$ft"
  31
  32 case $ft in
  33     application/x-gzip | application/x-compress) dc=zcat;;
  34     application/x-xz) dc=xzcat;;
  35     application/x-bzip2) dc=bzcat;;
  36     *) unset dc || true;;
  37 esac
  38
  39 filt='"${dc-cat}" "$1" |'
  40
  41 if test -z "$type"; then
  42     test -z "$dc" || ft=$(file -L --mime-type -bz "$1") || die "$ft"
  43
  44     mime=${mime:-$ft}
  45     case $mime in
  46         application/postscript) type=ps;;
  47         application/pdf) type=pdf;;
  48         image/vnd.djvu) type=djvu;;
  49         text/html) type=html;;
  50         application/msword) type=word;;
  51         application/vnd.openxmlformats-officedocument.*  \
  52             | application/vnd.ms-powerpoint              \
  53             | application/vnd.ms-excel                   \
  54             | application/vnd.oasis.opendocument.*) type=uno;;
  55         image/svg+xml) type=svg;;
  56         image/png | image/jpeg) test -n "$dc" && type="image" || type="image2";;
  57         image/*) type=image;;
  58         application/x-dvi) type=dvi;;
  59         *) die "unhandled file type: '$mime'";;
  60     esac
  61 fi
  62
  63 opts=
  64
  65 case $type in
  66     ps) conv='ps2pdf - "$casp"';;
  67     image2|pdf) test -z "$dc" && exec llpp "$@" || conv='cat >"$casp"';;
  68     djvu) conv='djvups - | ps2pdf - "$casp"';;
  69     html) {
  70         test -n "$dc" && die "can not convert compressed '$mime'"
  71         unset filt
  72         conv='prince "$1" -o "$casp"'
  73     };;
  74     word) {
  75         if executable_p unoconv && test -z "$dc"; then
  76             unset filt
  77             conv='unoconv -o "$casp" "$1"'
  78         else
  79             conv='antiword -m 8859-1.txt -a a4 - >"$casp"'
  80         fi
  81     };;
  82     uno) {
  83         test -n "$dc" && die "can not convert compressed '$mime'"
  84         unset filt
  85         conv='unoconv -o "$casp" "$1"'
  86     };;
  87     svg) {
  88         executable_p rsvg-convert                        \
  89             && conv='rsvg-convert -f pdf -o "$casp"'     \
  90             || conv='inkscape -z -A "$casp" -'
  91     };;
  92     image) conv='convert - pdf:"$casp"';;
  93     dvi) {
  94         test -n "$dc" && die "can not convert compressed '$mime'"
  95         unset filt
  96         conv='dvipdf "$1" "$casp"'
  97     };;
  98     *) die "unhandled filter type: '$type'";;
  99 esac
 100
 101 hash=$(md5sum "$1") || die "$hash"
 102 casp=$CACHEDIR/${hash%% *}
 103 (test -n "$force" -o ! -e "$casp") && eval "$filt" "$conv"
 104
 105 exec llpp $opts -origin "$@" "$casp"