Clean pub cache directories

#!/bin/bash

# Paths to the pub cache directories
PUB_CACHE_HOSTED_DIRS=("$HOME/.pub-cache/hosted/pub.dev" "$HOME/.pub-cache/hosted/pub.dartlang.org")
PUB_CACHE_HASHES_DIR="$HOME/.pub-cache/hosted-hashes/pub.dev"
PUB_CACHE_GIT_DIR="$HOME/.pub-cache/git"

# Function to clean old versions from a given directory
clean_old_versions() {
  local dir=$1

  if [ -d "$dir" ]; then
    cd "$dir" || exit
    processed_packages=()

    for package_dir in */; do
      package_name=$(basename "$package_dir" | sed -E 's/-[^-]+$//')
      # Skip if already processed
      if [[ " ${processed_packages[@]} " =~ " ${package_name} " ]]; then
        continue
      fi

      processed_packages+=("$package_name")
      versions=($(ls -d "$package_name"-*/ 2>/dev/null | sort -V))

      if [ ${#versions[@]} -gt 0 ]; then
        latest_version=${versions[${#versions[@]}-1]}
        for version in "${versions[@]}"; do
          if [ "$version" != "$latest_version" ]; then
            echo "Removing old version: $version"
            rm -rf "$version"
          fi
        done
      fi
    done
  fi
}

# Function to clean old hashes
clean_old_hashes() {
  if [ -d "$PUB_CACHE_HASHES_DIR" ]; then
    cd "$PUB_CACHE_HASHES_DIR" || exit
    processed_packages=()

    for hash_file in *.sha256; do
      package_name=$(basename "$hash_file" | sed -E 's/-[^-]+$//')
      if [[ "$package_name" =~ ^[_] ]]; then
        continue
      fi
      # Skip if already processed
      if [[ " ${processed_packages[@]} " =~ " ${package_name} " ]]; then
        continue
      fi

      processed_packages+=("$package_name")
      versions=($(ls "$package_name"-*.sha256 2>/dev/null | sort -V))

      if [ ${#versions[@]} -gt 0 ]; then
        latest_hash=${versions[${#versions[@]}-1]}
        for hash in "${versions[@]}"; do
          if [ "$hash" != "$latest_hash" ]; then
            echo "Removing old hash: $hash"
            rm -f "$hash"
          fi
        done
      fi
    done
  fi
}

# Function to clean the git cache directory
clean_git_cache() {
  if [ -d "$PUB_CACHE_GIT_DIR" ]; then
    cd "$PUB_CACHE_GIT_DIR" || exit
    processed_packages=()

    for package_dir in */; do
      if [ "$package_dir" != "cache/" ]; then
        package_name=$(basename "$package_dir" | sed -E 's/-[^-]+$//')
        # Skip if already processed
        if [[ " ${processed_packages[@]} " =~ " ${package_name} " ]]; then
          continue
        fi

        processed_packages+=("$package_name")
        versions=($(ls -d "$package_name"-*/ 2>/dev/null | sort -V))

        if [ ${#versions[@]} -gt 0 ]; then
          latest_version=${versions[${#versions[@]}-1]}
          for version in "${versions[@]}"; do
            if [ "$version" != "$latest_version" ]; then
              echo "Removing old git package version: $version"
              rm -rf "$version"
            fi
          done
        fi
      fi
    done

    # Clean the cache folder inside the git directory
    if [ -d "cache" ]; then
      echo "Cleaning git cache folder"
      rm -rf cache/*
    fi
  fi
}

# Clean old versions from the hosted directories
for hosted_dir in "${PUB_CACHE_HOSTED_DIRS[@]}"; do
  clean_old_versions "$hosted_dir"
done

# Clean old hashes from the hosted-hashes directory
clean_old_hashes

# Clean the git cache directory
clean_git_cache

echo "Clean up completed. Only the latest versions and hashes of each package remain."

How to Use the Script

Save the script to a file, e.g., clean_pub_cache.sh.
Make the script executable:

chmod +x clean_pub_cache.sh

Run the script:

./clean_pub_cache.sh

Improved Script with Safeguards:

Here's an improved version of the script with additional safeguards:

#!/bin/bash

# Paths to the pub cache directories
PUB_CACHE_HOSTED_DIRS=("$HOME/.pub-cache/hosted/pub.dev" "$HOME/.pub-cache/hosted/pub.dartlang.org")
PUB_CACHE_HASHES_DIR="$HOME/.pub-cache/hosted-hashes/pub.dev"
PUB_CACHE_GIT_DIR="$HOME/.pub-cache/git"

# Function to prompt user for confirmation
confirm() {
  read -r -p "${1:-Are you sure? [y/N]} " response
  case "$response" in
    [yY][eE][sS]|[yY]) 
      true
      ;;
    *)
      false
      ;;
  esac
}

# Function to clean old versions from a given directory
clean_old_versions() {
  local dir=$1

  if [ -d "$dir" ]; then
    cd "$dir" || exit
    processed_packages=()

    for package_dir in */; do
      package_name=$(basename "$package_dir" | sed -E 's/-[^-]+$//')
      # Skip if already processed
      if [[ " ${processed_packages[@]} " =~ " ${package_name} " ]]; then
        continue
      fi

      processed_packages+=("$package_name")
      versions=($(ls -d "$package_name"-*/ 2>/dev/null | sort -V))

      if [ ${#versions[@]} -gt 0 ]; then
        latest_version=${versions[${#versions[@]}-1]}
        for version in "${versions[@]}"; do
          if [ "$version" != "$latest_version" ]; then
            echo "Found old version: $version"
            if confirm "Do you want to remove $version? [y/N]"; then
              rm -rf "$version"
            fi
          fi
        done
      fi
    done
  fi
}

# Function to clean old hashes
clean_old_hashes() {
  if [ -d "$PUB_CACHE_HASHES_DIR" ]; then
    cd "$PUB_CACHE_HASHES_DIR" || exit
    processed_packages=()

    for hash_file in *.sha256; do
      package_name=$(basename "$hash_file" | sed -E 's/-[^-]+$//')
      if [[ "$package_name" =~ ^[_] ]]; then
        continue
      fi
      # Skip if already processed
      if [[ " ${processed_packages[@]} " =~ " ${package_name} " ]]; then
        continue
      fi

      processed_packages+=("$package_name")
      versions=($(ls "$package_name"-*.sha256 2>/dev/null | sort -V))

      if [ ${#versions[@]} -gt 0 ]; then
        latest_hash=${versions[${#versions[@]}-1]}
        for hash in "${versions[@]}"; do
          if [ "$hash" != "$latest_hash" ]; then
            echo "Found old hash: $hash"
            if confirm "Do you want to remove $hash? [y/N]"; then
              rm -f "$hash"
            fi
          fi
        done
      fi
    done
  fi
}

# Function to clean the git cache directory
clean_git_cache() {
  if [ -d "$PUB_CACHE_GIT_DIR" ]; then
    cd "$PUB_CACHE_GIT_DIR" || exit
    processed_packages=()

    for package_dir in */; do
      if [ "$package_dir" != "cache/" ]; then
        package_name=$(basename "$package_dir" | sed -E 's/-[^-]+$//')
        # Skip if already processed
        if [[ " ${processed_packages[@]} " =~ " ${package_name} " ]]; then
          continue
        fi

        processed_packages+=("$package_name")
        versions=($(ls -d "$package_name"-*/ 2>/dev/null | sort -V))

        if [ ${#versions[@]} -gt 0 ]; then
          latest_version=${versions[${#versions[@]}-1]}
          for version in "${versions[@]}"; do
            if [ "$version" != "$latest_version" ]; then
              echo "Found old git package version: $version"
              if confirm "Do you want to remove $version? [y/N]"; then
                rm -rf "$version"
              fi
            fi
          done
        fi
      fi
    done

    # Clean the cache folder inside the git directory
    if [ -d "cache" ]; then
      echo "Found git cache folder"
      if confirm "Do you want to clean the git cache folder? [y/N]"; then
        rm -rf cache/*
      fi
    fi
  fi
}

# Clean old versions from the hosted directories
for hosted_dir in "${PUB_CACHE_HOSTED_DIRS[@]}"; do
  clean_old_versions "$hosted_dir"
done

# Clean old hashes from the hosted-hashes directory
clean_old_hashes

# Clean the git cache directory
clean_git_cache

echo "Clean up completed. Only the latest versions and hashes of each package remain."

Improvements and Safeguards

Confirmation Prompt: Added a confirm function to prompt the user for confirmation before deleting any files. This adds a safeguard against accidental deletion.
Manual Intervention: By confirming each deletion, you have more control over what gets removed, reducing the risk of breaking dependencies.

Mastersam07/clean_pub_cache.md

How to Use the Script

Improved Script with Safeguards:

Improvements and Safeguards