wg

#!/bin/bash
#
# Replace in files. Uses `ripgrep` to find files, so all `ripgrep` arguments work.
# > Note: Use `g` command for dry-run, and then replace it with `wg` command.
#
# - Replace a pattern in a file:
#
# `wg {{pattern}} {{filename}} --replace {{replacement}}`
#
# - Replace a pattern in all files:
#
# `wg {{pattern}} --replace {{replacement}}`
#
# ---
# Based on: https://github.com/sapegin/dotfiles/blob/master/bin/wg
#
# Author: Nick Plekhanov, https://nikkhan.com/
# License: MIT
# https://github.com/nicksp/dotfiles

RED="$(tput setaf 1)"
UNDERLINE="$(tput sgr 0 1)"
RESET="$(tput sgr0)"

error() {
  echo -e "$UNDERLINE$RED$1$RESET\n"
}

command -v rg &> /dev/null || {
  error "ripgrep is not installed: brew install ripgrep"
  exit 1
}

seenReplace=''

for arg in "$@"; do
  if test "$arg" == '--replace' -o "$arg" == '-r'; then
    seenReplace='true'
    break
  fi
done

if test -z "$seenReplace"; then
  error 'You should run wg with --replace or -r argument'
  exit 1
fi

currentFile=''
didChange=''

(
  rg \
    --context 999999 \
    --with-filename \
    --heading \
    --null \
    --color never \
    --no-line-number \
    --max-columns 0 \
    "$@"
  echo -e '\n\0'
) \
  | {
    while IFS= read -r -d '' part; do
      if test -n "$currentFile"; then
        echo "$currentFile"
        # Write file without last two lines
        perl -ne 'push(@buf,$_);END{print @buf[0 ... $#buf-2]}' <<< "$part" > "$currentFile"
        didChange='true'
      fi
      currentFile="$(tail -n 1 <<< "$part")"
    done

    if test -z "$didChange"; then
      echo "No files were changed"
      exit 1
    fi
  }