Rename Project name thoroughly for Java

README.md

How to use

curl -fsSL https://gist.githubusercontent.com/weehong-1/a6205f99be440bf45a3572e4cd52184e/raw/rename.sh | bash -s -- horaion upmatches

rename.sh

#!/bin/bash

# Check if the correct number of arguments are passed
if [ "$#" -ne 2 ]; then
    echo "❌ Error: Missing arguments."
    echo "👉 Usage: $0 <old_project_name> <new_project_name>"
    exit 1
fi

# 1. Lowercase
OLD_LOWER=$(echo "$1" | tr '[:upper:]' '[:lower:]')
NEW_LOWER=$(echo "$2" | tr '[:upper:]' '[:lower:]')

# 2. Capitalized
OLD_CAP="$(echo "$OLD_LOWER" | cut -c1 | tr '[:lower:]' '[:upper:]')$(echo "$OLD_LOWER" | cut -c2-)"
NEW_CAP="$(echo "$NEW_LOWER" | cut -c1 | tr '[:lower:]' '[:upper:]')$(echo "$NEW_LOWER" | cut -c2-)"

# 3. UPPERCASE
OLD_UPPER=$(echo "$OLD_LOWER" | tr '[:lower:]' '[:upper:]')
NEW_UPPER=$(echo "$NEW_LOWER" | tr '[:lower:]' '[:upper:]')

echo "🚀 Preparing to rename project..."
echo "   Lowercase:   $OLD_LOWER -> $NEW_LOWER"
echo "   Capitalized: $OLD_CAP -> $NEW_CAP"
echo "   UPPERCASE:   $OLD_UPPER -> $NEW_UPPER"
echo "----------------------------------------"

echo "🧹 Step 1: Cleaning up build directories..."
rm -rf .git .idea .settings .project .classpath target build

echo "📝 Step 2: Replacing text inside files..."
# Exact matches first, then a case-insensitive fallback to catch weird mixtures
find . -type f \
    -not -name "*.jar" \
    -not -name "*.ico" \
    -not -name "*.png" \
    -not -name "$(basename "$0")" \
    -exec perl -pi -e "s/$OLD_UPPER/$NEW_UPPER/g; s/$OLD_CAP/$NEW_CAP/g; s/$OLD_LOWER/$NEW_LOWER/g; s/$OLD_LOWER/$NEW_LOWER/gi" {} +

echo "📁 Step 3: Renaming directories and files..."
# Rename UPPERCASE instances
find . -depth -name "*$OLD_UPPER*" | while read -r path ; do
    dir=$(dirname "$path")
    base=$(basename "$path")
    newbase=$(echo "$base" | sed "s/$OLD_UPPER/$NEW_UPPER/g")
    mv "$path" "$dir/$newbase"
done

# Rename Capitalized instances
find . -depth -name "*$OLD_CAP*" | while read -r path ; do
    dir=$(dirname "$path")
    base=$(basename "$path")
    newbase=$(echo "$base" | sed "s/$OLD_CAP/$NEW_CAP/g")
    mv "$path" "$dir/$newbase"
done

# Rename lowercase and fallback instances (case-insensitive)
find . -depth -iname "*$OLD_LOWER*" | while read -r path ; do
    dir=$(dirname "$path")
    base=$(basename "$path")
    # Convert whatever case it is to the new lowercase name to standardize it
    newbase=$(echo "$base" | grep -i "$OLD_LOWER" | perl -pe "s/$OLD_LOWER/$NEW_LOWER/gi")
    if [ ! -z "$newbase" ] && [ "$base" != "$newbase" ]; then
        mv "$path" "$dir/$newbase"
    fi
done

echo "✅ Script finished running!"