rename

#!/usr/bin/env bash

#
# Simple file and folder renaming utility.
#
# Makes use of the [sharkdp/fd](https://github.com/sharkdp/fd) find script
# to rename files and folders
#
# Usage example:
#
# rename from/pattern to_pattern
# rename from_pattern to/pattern
# rename from_pattern to_pattern
#

read -r -d '' script <<'EOF'
ARGV.each_slice(4).each do |from, to, from_path, to_path|
  to_path = to_path.sub(from, to)

  dir = to_path.split('/')[0..-2].join('/')
  `test -d "#{dir}" || mkdir -p "#{dir}"`

  `mv "#{from_path}" "#{to_path}"`

  puts "#{from_path} ---> #{to_path}"
end
EOF

from=$1
fd -ap "$from" --exec echo "$@ {} {}" | xargs ruby -e "$script"