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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
//! Interval parsing logic
use std::fmt::Display;
use std::str::FromStr;
use crate::DataFusionError;
/// Readable file compression type
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum CompressionTypeVariant {
/// Gzip-ed file
GZIP,
/// Bzip2-ed file
BZIP2,
/// Xz-ed file (liblzma)
XZ,
/// Zstd-ed file,
ZSTD,
/// Uncompressed file
UNCOMPRESSED,
}
impl FromStr for CompressionTypeVariant {
type Err = DataFusionError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let s = s.to_uppercase();
match s.as_str() {
"GZIP" | "GZ" => Ok(Self::GZIP),
"BZIP2" | "BZ2" => Ok(Self::BZIP2),
"XZ" => Ok(Self::XZ),
"ZST" | "ZSTD" => Ok(Self::ZSTD),
"" | "UNCOMPRESSED" => Ok(Self::UNCOMPRESSED),
_ => Err(DataFusionError::NotImplemented(format!(
"Unsupported file compression type {s}"
))),
}
}
}
impl Display for CompressionTypeVariant {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let str = match self {
Self::GZIP => "GZIP",
Self::BZIP2 => "BZIP2",
Self::XZ => "XZ",
Self::ZSTD => "ZSTD",
Self::UNCOMPRESSED => "",
};
write!(f, "{str}")
}
}
impl CompressionTypeVariant {
pub const fn is_compressed(&self) -> bool {
!matches!(self, &Self::UNCOMPRESSED)
}
}
/// CSV quote style
///
/// Controls when fields are quoted when writing CSV files.
/// Corresponds to [`arrow::csv::QuoteStyle`].
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
pub enum CsvQuoteStyle {
/// Quote all fields
Always,
/// Only quote fields when necessary (default)
#[default]
Necessary,
/// Quote all non-numeric fields
NonNumeric,
/// Never quote fields
Never,
}
impl FromStr for CsvQuoteStyle {
type Err = DataFusionError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s.to_lowercase().as_str() {
"always" => Ok(Self::Always),
"necessary" => Ok(Self::Necessary),
"non_numeric" | "nonnumeric" => Ok(Self::NonNumeric),
"never" => Ok(Self::Never),
_ => Err(DataFusionError::NotImplemented(format!(
"Unsupported CSV quote style {s}"
))),
}
}
}
impl From<CsvQuoteStyle> for arrow::csv::QuoteStyle {
fn from(style: CsvQuoteStyle) -> Self {
match style {
CsvQuoteStyle::Always => Self::Always,
CsvQuoteStyle::NonNumeric => Self::NonNumeric,
CsvQuoteStyle::Never => Self::Never,
CsvQuoteStyle::Necessary => Self::Necessary,
}
}
}
impl Display for CsvQuoteStyle {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let str = match self {
Self::Always => "Always",
Self::Necessary => "Necessary",
Self::NonNumeric => "NonNumeric",
Self::Never => "Never",
};
write!(f, "{str}")
}
}