unixorn/fzf-zsh-plugin

#!/usr/bin/env sh
#
# lessfilter-fzf is a `less` pre-processor intended (but not strictly required) to work together with `lesspipe.sh`.
#
# Make the most of it by installing lesspipe.sh, e.g. `brew install lesspipe`, see https://github.com/wofr06/lesspipe
# When `lesspipe.sh` is available, it will be used to view a wide range of file formats (directories, images, PDFs,
# CSVs, source code,...).
#
# In case that you are not using your own custom `less` pre-processor, it can also be quite handy to use this one. You
# can export LESSOPEN in your init scripts (.bashrc/.zshrc or similar):
#
#   export LESSOPEN='| lessfilter-fzf %s'
#
# Ultimately, lesspipe.sh will honor your own `lessfilter` if found in your PATH, leading to the following execution:
#   lessfilter-fzf > lesspipe.sh > lessfilter
#
# Required tools:
#   - eza
#   - bat
#   - chafa, exiftool
#   - lesspipe.sh (recommended)
#
# Credits: This script (beyond any modification) was taken from https://github.com/Aloxaf/fzf-tab/wiki/Preview
#

EXIT_UNHANDLED=10

has_cmd() {
  command -v "$1" >/dev/null 2>&1
}

mime=$(file -bL --mime-type "$1")  # e.g. 'application/pdf'
category=${mime%%/*}
# shellcheck disable=SC2034 # left for completion
kind=${mime##*/}

if [ -d "$1" ] && has_cmd eza; then
  eza --git --header --long --color=always --icons "$1"
elif [ "$category" = image ] && has_cmd chafa && has_cmd exiftool; then
  chafa "$1"
  exiftool "$1"
elif has_cmd lesspipe.sh; then
  # At the time of writing, `lesspipe.sh` does not use `eza` and `chafa`, it just uses `ls` and `exiftool`. It
  # will ultimately rely on `less` as a sane fallback.
  lesspipe.sh "$1" 2>/dev/null
elif [ "$category" = text ] && has_cmd bat; then  # <-- give priority to lesspipe.sh if available
    bat "$1"
else
  exit $EXIT_UNHANDLED
fi