git-sparse-clone.sh

#!/bin/bash

# Check if the correct number of arguments are passed
if [ "$#" -ne 3 ]; then
    echo "Usage: $0 <git-url> <path-to-directory> <target-directory>"
    exit 1
fi

# Variables from arguments
GIT_URL=$1
DIRECTORY_PATH=$2
TARGET_DIR=$3

# Cleanup function to remove the target directory on failure
cleanup() {
    echo "An error occurred. Cleaning up the target directory..."
    /bin/rm -rf "$TARGET_DIR"
    echo "Cleanup complete."
}

# Cloning the repo into the specified target directory with minimal depth and no tree
git clone -n --depth=1 --filter=tree:0 "$GIT_URL" "$TARGET_DIR"
if [ $? -ne 0 ]; then
    echo "Git clone failed."
    cleanup
    exit 1
fi

# Change directory to the specified target directory
cd "$TARGET_DIR"
if [ $? -ne 0 ]; then
    echo "Failed to change directory to $TARGET_DIR"
    cleanup
    exit 1
fi

# Setup sparse checkout
git sparse-checkout set --no-cone "$DIRECTORY_PATH"
if [ $? -ne 0 ]; then
    echo "Sparse-checkout setup failed."
    cleanup
    exit 1
fi

# Checkout the files
git checkout
if [ $? -ne 0 ]; then
    echo "Git checkout failed."
    cleanup
    exit 1
fi

# Verify the contents of the checkout
if [ -z "$(ls -A $DIRECTORY_PATH)" ]; then
    echo "Error: The specified path '$DIRECTORY_PATH' does not exist in the repository."
    cleanup
    exit 1
fi

echo "Checkout complete. The repository is located in '$TARGET_DIR'."
echo "To enter the directory, use: cd '$TARGET_DIR'"