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| #!/usr/bin/env bash | |
| set -euo pipefail | |
| DESCRIPTION="Convert an input file of {csv, parquet, json} format to {csv, parquet, json} format" | |
| DUCKDB_VERSION="1.1.0" | |
| VERBOSE=false | |
| usage() { | |
| echo "Usage: $0 <input_file> -f <output_format> [-o <output_file>] [-v]" | |
| echo " <input_file>: Path to the input file" | |
| echo " -f, --fmt: Output format {parquet, json, csv}" | |
| echo " -o, --out: Output file path. If not specified, will use the input filename with new output format" | |
| echo " -v, --verbose: Enable verbose output" | |
| echo " -h, --help: Display this help message" | |
| echo "${DESCRIPTION}" | |
| exit 1 | |
| } | |
| # Check if no arguments are provided | |
| if [ $# -eq 0 ]; then | |
| usage | |
| fi | |
| # Parse command line arguments | |
| INPUT_PATH="" | |
| OUTPUT_FORMAT="" | |
| OUTPUT_PATH="" | |
| while [ $# -gt 0 ]; do | |
| case "$1" in | |
| -h|--help) usage ;; | |
| -f|--fmt) OUTPUT_FORMAT="$2"; shift ;; | |
| -o|--out) OUTPUT_PATH="$2"; shift ;; | |
| -v|--verbose) VERBOSE=true ;; | |
| -*) echo "Unknown option: $1"; usage ;; | |
| *) | |
| if [ -z "$INPUT_PATH" ]; then | |
| INPUT_PATH="$1" | |
| else | |
| echo "Unexpected argument: $1"; usage | |
| fi | |
| ;; | |
| esac | |
| shift | |
| done | |
| # Check if required arguments are provided | |
| if [ -z "${INPUT_PATH}" ] || [ -z "${OUTPUT_FORMAT}" ]; then | |
| echo "Error: Both input file and output format must be specified." | |
| usage | |
| fi | |
| # if OUTPUT_PATH is not provided, use the same path as the input file | |
| if [ -z "${OUTPUT_PATH}" ]; then | |
| OUTPUT_PATH="${INPUT_PATH%.*}.${OUTPUT_FORMAT}" | |
| fi | |
| check_system() { | |
| if [[ "$OSTYPE" == "darwin"* ]]; then | |
| system="Darwin" | |
| elif [[ "$OSTYPE" == "linux-gnu"* ]]; then | |
| case "$(uname -m)" in | |
| x86_64) system="linux-amd64" ;; | |
| aarch64) system="linux-arm64" ;; | |
| *) echo "Unsupported Linux architecture"; exit 1 ;; | |
| esac | |
| else | |
| echo "Unsupported OS"; exit 1 | |
| fi | |
| if $VERBOSE; then | |
| echo "FILE CONVERTER" | |
| echo "---------------------------------" | |
| echo "Time: [$(date +%Y-%m-%d\ %H:%M:%S)]" | |
| echo "System: [${system}]" | |
| fi | |
| } | |
| check_duckdb_installed() { | |
| if ! command -v duckdb &> /dev/null; then | |
| echo "DuckDB could not be found" | |
| download_duckdb | |
| else | |
| duckdb_version=$(duckdb --version) | |
| if $VERBOSE; then | |
| echo "DuckDB version: [${duckdb_version}]" | |
| fi | |
| fi | |
| } | |
| download_duckdb() { | |
| case "${system}" in | |
| Darwin) | |
| if command -v brew &> /dev/null; then | |
| brew install duckdb | |
| else | |
| echo "Homebrew is not installed. Please install Homebrew or DuckDB manually." | |
| exit 1 | |
| fi | |
| ;; | |
| linux-amd64) | |
| bin_url="https://github.com/duckdb/duckdb/releases/download/v${DUCKDB_VERSION}/duckdb_cli-linux-amd64.zip" | |
| ;; | |
| linux-arm64) | |
| bin_url="https://github.com/duckdb/duckdb/releases/download/v${DUCKDB_VERSION}/duckdb_cli-linux-aarch64.zip" | |
| ;; | |
| esac | |
| if [ "${system}" != "Darwin" ]; then | |
| if command -v apt-get &> /dev/null; then | |
| sudo apt-get update | |
| sudo apt-get install -y unzip wget | |
| elif command -v yum &> /dev/null; then | |
| sudo yum install -y unzip wget | |
| else | |
| echo "Unsupported package manager. Please install unzip and wget manually." | |
| exit 1 | |
| fi | |
| wget "${bin_url}" -O duckdb.zip | |
| unzip duckdb.zip | |
| chmod +x duckdb | |
| sudo mv duckdb /usr/local/bin/duckdb | |
| fi | |
| } | |
| file_to_file() { | |
| file_formats=("csv" "parquet" "json") | |
| this_file_format="${INPUT_PATH##*.}" | |
| if $VERBOSE; then | |
| echo "Input path: [${INPUT_PATH}]" | |
| echo "Output path: [${OUTPUT_PATH}]" | |
| fi | |
| if [[ ! " ${file_formats[*]} " =~ ${this_file_format} ]]; then | |
| echo "Invalid input file format: ${this_file_format}" | |
| exit 1 | |
| fi | |
| case "${this_file_format}" in | |
| csv) | |
| if $VERBOSE; then echo "Input format: [CSV]"; fi | |
| input_format="read_csv_auto" | |
| ;; | |
| parquet) | |
| if $VERBOSE; then echo "Input format: [PARQUET]"; fi | |
| input_format="read_parquet" | |
| ;; | |
| json) | |
| if $VERBOSE; then echo "Input format: [JSON]"; fi | |
| input_format="read_json_auto" | |
| ;; | |
| esac | |
| case "${OUTPUT_FORMAT}" in | |
| parquet|json|csv) | |
| out_upper=$(echo "${OUTPUT_FORMAT}" | tr '[:lower:]' '[:upper:]') | |
| if $VERBOSE; then echo "Output format: [${out_upper}]"; fi | |
| ;; | |
| *) echo "Invalid output format: ${OUTPUT_FORMAT}"; exit 1 ;; | |
| esac | |
| # https://duckdb.org/docs/sql/statements/copy#format-specific-options | |
| format_args="" | |
| case "${OUTPUT_FORMAT}" in | |
| parquet) format_args="format parquet" ;; | |
| json) format_args="format json, array true" ;; | |
| csv) format_args="format csv" ;; | |
| esac | |
| QUERY=" | |
| copy (from ${input_format}('${INPUT_PATH}')) | |
| to '${OUTPUT_PATH}' | |
| (${format_args});" | |
| if $VERBOSE; then | |
| echo "---------------------------------" | |
| echo "Query: ${QUERY}" | |
| echo "---------------------------------" | |
| fi | |
| duckdb -c "${QUERY}" | |
| echo "[${INPUT_PATH}] -> [${OUTPUT_PATH}]" | |
| } | |
| main() { | |
| check_system | |
| check_duckdb_installed | |
| file_to_file | |
| } | |
| main |
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