x/.local/bin/thumbnailer.sh

   1 #!/bin/bash
   2
   3 PAGERESIZE=50%
   4
   5 log () {
   6         echo "$@" >&2
   7 }
   8
   9 if [ "$#" -ne 2 ]
  10 then
  11         log "Convert all pdf pages to a montage"
  12         log "Usage: $0 INPUT.pdf OUTPUT.png"
  13         exit 1
  14 fi
  15 log "Processing $1 to $2"
  16
  17 TMPDIR="$(mktemp -d)"
  18 log "Temp directory created in $TMPDIR"
  19
  20 NUMPAGES=$(identify "$1" | wc -l)
  21 log "$NUMPAGES detected"
  22
  23 log -n "Processing page: "
  24 for ((p=0;p<$NUMPAGES;p++))
  25 do
  26         convert "$1"[$p] -resize $PAGERESIZE $TMPDIR/$p.png
  27         log -n "$p, "
  28 done
  29 log "done!"
  30
  31 montage -geometry +0+0 $TMPDIR/*.png "$2"
  32 log "Montaging done"
  33
  34 rm -r $TMPDIR
  35 log "Cleaned up"
  36
  37 log "Done"