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 trap "rm -r $TMPDIR" EXIT
  19 log "Temp directory created in $TMPDIR"
  20
  21 NUMPAGES=$(identify "$1" | wc -l)
  22 log "$NUMPAGES detected"
  23
  24 log -n "Processing page: "
  25 for ((p=0;p<$NUMPAGES;p++))
  26 do
  27         convert "$1"[$p] -resize $PAGERESIZE $TMPDIR/$p.png
  28         log -n "$p, "
  29 done
  30 log "done!"
  31
  32 montage -geometry +0+0 $TMPDIR/*.png "$2"
  33 log "Montaging done"