install

#!/usr/bin/env bash

# Inspired by the installation mechanism for fzf:
# https://github.com/junegunn/fzf/

INSTALL_PATH=~/.git-tree

# For now, this assumes that git-tree has already been built.

append_line() {
  set -e

  local update line file pat lno
  update="$1"
  line="$2"
  file="$3"
  pat="${4:-}"
  lno=""

  echo "Update $file:"
  echo "  - $line"
  if [ -f "$file" ]; then
    if [ $# -lt 4 ]; then
      lno=$(\grep -nF "$line" "$file" | sed 's/:.*//' | tr '\n' ' ')
    else
      lno=$(\grep -nF "$pat" "$file" | sed 's/:.*//' | tr '\n' ' ')
    fi
  fi
  if [ -n "$lno" ]; then
    echo "    - Already exists: line #$lno"
  else
    if [ $update -eq 1 ]; then
      [ -f "$file" ] && echo "$line" >> "$file"
      echo "    + Added"
    else
      echo "    ~ Skipped"
    fi
  fi
  echo
  set +e
}

add_gittreerc() {
  cp ${INSTALL_PATH}/.gittreerc ~/.gittreerc
}

add_source_to_bashrc() {
  append_line 1 "[ -f ~/.gittreerc ] && source ~/.gittreerc" ~/.bashrc "~/.gittreerc"
}

print_finish() {
  cat << EOF
Finished. Restart your shell or reload config file.
   source ~/.bashrc  # bash

Use uninstall script to remove git-tree.

For more information, see: https://github.com/acamadeo/git-tree
EOF
}


add_gittreerc
add_source_to_bashrc
print_finish