literate-dotfiles/dotfiles/scripts.org

Scripts

• Wallpapers
• LockScreen
• Delete first page of PDF
• Lock / Exit / Suspend / …
• Copy Figures
• NAS
  • Mount
• Buku Git Push
• Icons Unicode
• Make GIF
• Org-Capture
• Download-Audio
• Download-Video
• Org-Protocol-Capture-HTML
• Pdf Shrink

Wallpapers

  while true; do
      nitrogen --set-zoom-fill --random ".wallpapers"
      sleep 10m
  done

TODO [A] LockScreen

• Does not work well with multiple screen

First, turn off dunst

  killall -SIGUSR1 dunst && echo "off" > /tmp/dunststatus;

Turn off the music if it is playing.

  MPC_STATE=$(mpc | sed -n '2p' | cut -d "[" -f2 | cut -d "]" -f1)
  if [[ $MPC_STATE == "playing" ]]; then
    mpc pause
  fi

Then take a screenshot and process it.

  temp_file="/tmp/screen.png"

  rm -f $temp_file

  scrot $temp_file
  convert $temp_file -scale 10% -scale 1000% $temp_file

Finally, lock the screen using i3lock.

  i3lock -e -n -i $temp_file && killall -SIGUSR2 dunst && echo "on" > /tmp/dunststatus

  revert() {
      xset dpms 0 0 0
  }
  trap revert HUP INT TERM
  # turn off screen after 5 seconds
  xset +dpms dpms 5 5 5

  # Parameters
  temp_file="/tmp/screen.png"
  icon="$HOME/Pictures/Evil_Rick_Sprite.png"
  width=1920
  height=1080
  blur_factor=6
  lock_blur_factor=0

  # Take the screen shot, blur the image and add the icon
  ffmpeg -f x11grab -video_size "${width}x${height}" -y -i $DISPLAY -i $icon -filter_complex "boxblur=$blur_factor:$blur_factor,overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2,boxblur=$lock_blur_factor:$lock_blur_factor" -vframes 1 $temp_file

  # Alternative
  # scrot -d 1 $temp_file
  # convert -blur 0x8 $temp_file $temp_file
  # convert -composite $temp_file $icon -gravity South -geometry -20x1200 $temp_file

  # Lock the screen with the image
  i3lock --no-unlock-indicator --ignore-empty-password --show-failed-attempts --nofork --image=$temp_file

  # Remove the screenshot
  rm $temp_file

  # Don't turn off screen when back from lock
  revert

Delete first page of PDF

The requirement is to have pdftk installed.

  if [[ -f $1 && $1 == *.pdf ]]; then
      # Argument if a file
      # pdftk "$1" cat 2-end output /tmp/pdftk_out.pdf && mv /tmp/pdftk_out.pdf "$1"
      stapler del "$1" 1 /tmp/pdftk_out.pdf && mv /tmp/pdftk_out.pdf "$1"
  fi

Lock / Exit / Suspend / …

  option=$(echo -e "Lock\nExit\nLogout\nSuspend\nHibernate\nReboot\nShutdown" | rofi -i -dmenu)

  case "$option" in
      "Lock")
          i3exit lock ;;
      "Exit")
          i3exit switch_user ;;
      "Logout")
          i3exit logout ;;
      "Suspend")
          i3exit suspend ;;
      "Hibernate")
          i3exit hibernate ;;
      "Reboot")
          i3exit reboot ;;
      "Shutdown")
          i3exit shutdown ;;
  esac

TODO [C] Copy Figures

Things to do:

• Display all the figures at once and ask for confirmation to copy them all
• Display the not found figures

  latexpath="$HOME/Cloud/thesis/latex/ressources/Figures";

  figures=`awk 'match($0, /(fig.*\.(png|svg|pdf))/, a) {print a[1];}' $1 \
        | awk '{ print gensub(/\s*\]\]\s*\|\s*\[\[\s*\.?\/?/, "\n", "g") }'`;

  for figure in $figures
  do
      figurename=`echo $figure | awk 'match($0, /(fig.*\/)(.*\.(png|svg|pdf))/, a) {print a[2];}'`;
      if [ -f $latexpath/$figurename ]
      then
          figurepath=`echo $figure | awk 'match($0, /(fig.*)\/(.*\.(png|svg|pdf))/, a) {print a[1];}'`;

          # echo $latexpath/$figurename
          # echo $figurepath/$figurename
          cp $latexpath/$figurename $figurepath/$figurename

          # read -r -p "Are You Sure? [Y/n] " input

          # case $input in
          #     [yY][eE][sS]|[yY])
          #         cp $latexpath/$figurename $figurepath/$figurename
          #         ;;
          #     [nN][oO]|[nN])
          #         exit 1
          #         ;;
          #     *)
          #         echo "Invalid input..."
          #         exit 1
          #         ;;
          # esac
      fi
  done

NAS

Mount

  if [ $1 == "mount" ]; then
      if sudo -A mount 192.168.1.2:/volume1/Downloads/ /mnt/NAS/; then
          dunstify --replace=58249 'NAS' 'Successfully mounted'
      else
          dunstify --replace=58249 'NAS' 'Error while mounted'
      fi
  elif [ $1 == "umount" ]; then
      if sudo -A umount /mnt/NAS/; then
          dunstify --replace=58249 'NAS' 'Successfully unmounted'
      else
          dunstify --replace=58249 'NAS' 'Error while unmounted'
      fi
  fi

Buku Git Push

  cd ~/.local/share/buku/

  if [[ ! -z $(git status -s bookmarks.db) ]]
  then
      git add bookmarks.db
      git commit -m "Changed bookmarks - $(date +%F)"
      git push
      dunstify --replace=79248 "Buku Git" "Updated"
      exit
  fi

Icons Unicode

  command -v xclip >/dev/null 2>&1 || { echo >&2 "I require xclip but it's not installed.  Aborting."; exit 1; }

  chosen=$(grep -v "#" ~/.config/emoji | dmenu -i -l 20)

  [ "$chosen" != "" ] || exit

  c=$(echo "$chosen" | sed "s/ .*//")
  echo "$c" | tr -d '\n' | xclip -selection clipboard
  dunstify --replace=05896 "'$c' copied to clipboard." &

Make GIF

http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html

  palette="/tmp/palette.png"

  filters="fps=15,scale=320:-1:flags=lanczos"

  ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
  ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y $2

Org-Capture

  xclip -o -selection primary | xclip -o -selection clipboard -i
  emacsclient -ne '(org-capture "" "Q")' && dunstify "Emacs" "Text Successfully Captured"

Download-Audio

if [ $TMUX ]; then
    tmux split -v -l 1 "cd ~/Downloads/ && youtube-dl --add-metadata -xic -f bestaudio/best $1" && tmux select-pane -U
else
    cd ~/Downloads/;
    setsid nohup youtube-dl --add-metadata -xic -f bestaudio/best $1 &> /dev/null &
fi

Download-Video

if [ $TMUX ]; then
    tmux split -v -l 1 "cd ~/Downloads/ && youtube-dl --add-metadata -ic $1" && tmux select-pane -U
else
    cd ~/Downloads/;
    setsid nohup youtube-dl --add-metadata -ic $1 &> /dev/null &
fi

Org-Protocol-Capture-HTML

Defaults

  heading="link"
  template="pu"
  url="https://google.com/"

Functions

  function debug {
      if [[ -n $debug ]]
      then
          function debug {
              echo "DEBUG: $@" >&2
          }
          debug "$@"
      else
          function debug {
              true
          }
      fi
  }
  function die {
      echo "$@" >&2
      exit 1
  }
  function urlencode {
      python -c "
  from __future__ import print_function
  try:
      from urllib import quote  # Python 2
  except ImportError:
      from urllib.parse import quote  # Python 3
  import sys
  print(quote(sys.stdin.read()[:-1], safe=''))"
  }

Documentation

  function usage {
      cat <<EOF
  $0 [OPTIONS] [HTML]
  html | $0 [OPTIONS]
  Send HTML to Emacs through org-protocol, passing it through Pandoc to
  convert HTML to Org-mode.  HTML may be passed as an argument or
  through STDIN.  If only URL is given, it will be downloaded and its
  contents used.
  Options:
      -h, --heading HEADING     Heading
      -t, --template TEMPLATE   org-capture template key (default: pu)
      -u, --url URL             URL
      --debug  Print debug info
      --help   I need somebody!
  EOF
  }

Arguments

  args=$(getopt -n "$0" -o dh:rt:u: -l debug,help,heading:,template:,url: -- "$@") \
      || die "Unable to parse args.  Is getopt installed?"
  eval set -- "$args"

  while true
  do
      case "$1" in
          -d|--debug)
              debug=true
              debug "Debugging on"
              ;;
          --help)
              usage
              exit
              ;;
          -h|--heading)
              shift
              heading="$1"
              ;;
          -t|--template)
              shift
              template="$1"
              ;;
          -u|--url)
              shift
              url="$1"
              ;;
          --)
              # Remaining args
              shift
              rest=("$@")
              break
              ;;
      esac

      shift
  done

  debug "ARGS: $args"
  debug "Remaining args: ${rest[@]}"

Get HTML

  if [[ -n $@ ]]
  then
      debug "Text from args"

      body="$@"
  fi

URL-encode

  heading=$(urlencode <<<"$heading") || die "Unable to urlencode heading."
  url=$(urlencode <<<"$url") || die "Unable to urlencode URL."
  body=$(urlencode <<<"$body") || die "Unable to urlencode text."

Send to Emacs

  emacsclient "org-protocol://capture?template=$template&url=$url&title=$heading&body=$body"

Pdf Shrink

  shrink ()
  {
  gs \
    -q -dNOPAUSE -dBATCH -dSAFER \
    -sDEVICE=pdfwrite \
    -dCompatibilityLevel=1.3 \
    -dPDFSETTINGS=/screen \
    -dEmbedAllFonts=true \
    -dSubsetFonts=true \
    -dAutoRotatePages=/None \
    -dColorImageDownsampleType=/Bicubic \
    -dColorImageResolution=$3 \
    -dGrayImageDownsampleType=/Bicubic \
    -dGrayImageResolution=$3 \
    -dMonoImageDownsampleType=/Subsample \
    -dMonoImageResolution=$3 \
    -sOutputFile="$2" \
    "$1"
  }

  check_smaller ()
  {
  # If $1 and $2 are regular files, we can compare file sizes to
  # see if we succeeded in shrinking. If not, we copy $1 over $2:
  if [ ! -f "$1" -o ! -f "$2" ]; then
  return 0;
  fi
  ISIZE="$(echo $(wc -c "$1") | cut -f1 -d\ )"
  OSIZE="$(echo $(wc -c "$2") | cut -f1 -d\ )"
  if [ "$ISIZE" -lt "$OSIZE" ]; then
  echo "Input smaller than output, doing straight copy" >&2
  cp "$1" "$2"
  fi
  }

  usage ()
  {
  echo "Reduces PDF filesize by lossy recompressing with Ghostscript."
  echo "Not guaranteed to succeed, but usually works."
  echo "  Usage: $1 infile [outfile] [resolution_in_dpi]"
  }

  IFILE="$1"

  # Need an input file:
  if [ -z "$IFILE" ]; then
  usage "$0"
  exit 1
  fi

  # Output filename defaults to "-" (stdout) unless given:
  if [ ! -z "$2" ]; then
  OFILE="$2"
  else
  OFILE="-"
  fi

  # Output resolution defaults to 72 unless given:
  if [ ! -z "$3" ]; then
  res="$3"
  else
  res="90"
  fi

  shrink "$IFILE" "$OFILE" "$res" || exit $?

  check_smaller "$IFILE" "$OFILE"