init_project.sh

#!/usr/bin/env bash

if [ ! -d src ]; then
  echo "error: must run from root directory or already initialized" >&2
  exit 2
fi

if [ $# -ne 1 ]; then
  echo "usage: $0 new_name" >&2
  exit 1
fi

new_name=$1
if ! echo "$new_name" | grep -Eq '^[a-z]*$'; then
  echo "error: new name must match '^[a-z]*$'" >&2
  exit 3
fi

upper=$(echo $new_name | tr [:lower:] [:upper:])
lower=$(echo $new_name | tr [:upper:] [:lower:])

if [ -d '.git' ]; then
  git="git "
fi

for f in $(grep -irl example --exclude-dir='build' --exclude-dir='.*' \
         | grep -v $(basename $0)); do
  bname=$(basename "$f")
  if echo "$bname" | grep -Eq '^\.'; then
    continue
  fi

  echo "Updating $bname"
  sed -i "s/example/$lower/g" "$f"
  sed -i "s/EXAMPLE/$upper/g" "$f"
done

for f in $(find . -type f -iname '*example*' -not -path './build*'); do
  ${git}mv $f $(echo $f | sed "s:/\([^/]*\)example\([^/]*\)$:/\1${lower}\2:")
done

for f in $(find . -type d -iname '*example*' -not -path './build*'); do
  ${git}mv $f $(echo $f | sed "s:example:${lower}:")
done

mv -v example $new_name

echo
echo "1. Remove this script with \`${git}rm $0\`"
echo "2. Update README.md"