scope.sh for text preview of office documents in ranger file manager (using .mailcap file from https://gist.github.com/Konfekt/9797372146e65a70a44c1e24a35ae0a2)

scope.sh

#!/usr/bin/env bash

# Uses ~/.mailcap from https://gist.github.com/Konfekt/9797372146e65a70a44c1e24a35ae0a2
# to read binary files

set -o noclobber -o noglob -o nounset -o pipefail
IFS=$'\n'

## If the option `use_preview_script` is set to `true`,
## then this script will be called and its output will be displayed in ranger.
## ANSI color codes are supported.
## STDIN is disabled, so interactive scripts won't work properly

## This script is considered a configuration file and must be updated manually.
## It will be left untouched if you upgrade ranger.

## Because of some automated testing we do on the script #'s for comments need
## to be doubled up. Code that is commented out, because it's an alternative for
## example, gets only one #.

## Meanings of exit codes:
## code | meaning    | action of ranger
## -----+------------+-------------------------------------------
## 0    | success    | Display stdout as preview
## 1    | no preview | Display no preview at all
## 2    | plain text | Display the plain content of the file
## 3    | fix width  | Don't reload when width changes
## 4    | fix height | Don't reload when height changes
## 5    | fix both   | Don't ever reload
## 6    | image      | Display the image `$IMAGE_CACHE_PATH` points to as an image preview
## 7    | image      | Display the file directly as an image

## Script arguments
FILE_PATH="${1}"        # Full path of the highlighted file
# PV_WIDTH="${2}"         # Width of the preview pane (number of fitting characters)
# PV_HEIGHT="${3}"        # Height of the preview pane (number of fitting characters)
IMAGE_CACHE_PATH="${4}" # Full path that should be used to cache image preview
PV_IMAGE_ENABLED="${5}" # 'True' if image previews are enabled, 'False' otherwise.

# FILE_EXTENSION="${FILE_PATH##*.}"
# FILE_EXTENSION_LOWER="$(printf "%s" "${FILE_EXTENSION}" | tr '[:upper:]' '[:lower:]')"
MIMETYPE="$(file --dereference --brief --mime-type -- "${FILE_PATH}")"

# Image previews, if enabled in ranger.
if [ "$PV_IMAGE_ENABLED" = "True" ]; then
  case "$MIMETYPE" in
    # Image previews for SVG files, disabled by default.
    ###image/svg+xml)
    ###   convert "$FILE_PATH" "$IMAGE_CACHE_PATH" && exit 6 || exit 1;;
    # Image previews for image files. w3mimgdisplay will be called for all
    # image files (unless overriden as above), but might fail for
    # unsupported types.
    image/*)
    orientation="$( identify -format '%[EXIF:Orientation]\n' -- "${FILE_PATH}" )"
    ## If orientation data is present and the image actually
    ## needs rotating ("1" means no rotation)...
    if [[ -n "$orientation" && "$orientation" != 1 ]]; then
      ## ...auto-rotate the image according to the EXIF data.
      convert -- "${FILE_PATH}" -auto-orient "${IMAGE_CACHE_PATH}" && exit 6
    fi
    exit 7 ;;
  # Image preview for video, disabled by default.:
  video/*)
    # Get embedded thumbnail
    ffmpeg -i "${FILE_PATH}" -map 0:v -map -0:V -c copy "${IMAGE_CACHE_PATH}" && exit 6
    # # Get frame 10% into video
    # ffmpegthumbnailer -i "${FILE_PATH}" -o "${IMAGE_CACHE_PATH}" -s 0 && exit 6
    ;;
  application/pdf)
    # pdftocairo adds the extension itself, so we have to remove it
    pdftocairo -jpeg -singlefile "$FILE_PATH" "$IMAGE_CACHE_PATH" \
      && mv "${IMAGE_CACHE_PATH}.jpg" "$IMAGE_CACHE_PATH" \
      && exit 6
          ;;
  esac
fi

if command -v run-mailcap >/dev/null && command -v setsid >/dev/null; then
  setsid --fork run-mailcap --action=cat -- "$FILE_PATH" | head -n 200
elif command -v lesspipe.sh >/dev/null; then
  lesspipe.sh -- "$FILE_PATH" | head -n 200
elif command -v bat >/dev/null; then
  BAT_THEME=ansi bat --color=always --style=plain --line-range=:200 -- "$FILE_PATH"
elif command -v batcat >/dev/null; then
  BAT_THEME=ansi batcat --color=always --style=plain --line-range=:200 -- "$FILE_PATH"
elif command -v highlight >/dev/null; then
  highlight --out-format=ansi --force -- "$FILE_PATH" | head -n 200
elif command -v less >/dev/null; then
  less -- "$FILE_PATH" | head -n 200
else
  cat -- "$FILE_PATH" | head -n 200
fi
EXIT_CODE=$?
# Ignore potential SIGPIPE from trimming the output
if (( EXIT_CODE == 0 )) || (( EXIT_CODE == 141 )); then
  exit 5
fi

exit 1