// 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.
//! String Writer
//! This string writer encapsulates `std::string::String` and
//! implements `std::io::Write` trait, which makes String as a
//! writable object like File.
//!
//! Example:
//!
//! ```
//! use arrow::array::*;
//! use arrow::csv;
//! use arrow::datatypes::*;
//! use arrow::record_batch::RecordBatch;
//! use arrow::util::string_writer::StringWriter;
//! use std::sync::Arc;
//!
//! let schema = Schema::new(vec![
//! Field::new("c1", DataType::Utf8, false),
//! Field::new("c2", DataType::Float64, true),
//! Field::new("c3", DataType::UInt32, false),
//! Field::new("c3", DataType::Boolean, true),
//! ]);
//! let c1 = StringArray::from(vec![
//! "Lorem ipsum dolor sit amet",
//! "consectetur adipiscing elit",
//! "sed do eiusmod tempor",
//! ]);
//! let c2 = PrimitiveArray::<Float64Type>::from(vec![
//! Some(123.564532),
//! None,
//! Some(-556132.25),
//! ]);
//! let c3 = PrimitiveArray::<UInt32Type>::from(vec![3, 2, 1]);
//! let c4 = BooleanArray::from(vec![Some(true), Some(false), None]);
//!
//! let batch = RecordBatch::try_new(
//! Arc::new(schema),
//! vec![Arc::new(c1), Arc::new(c2), Arc::new(c3), Arc::new(c4)],
//! )
//! .unwrap();
//!
//! let sw = StringWriter::new();
//! let mut writer = csv::Writer::new(sw);
//! writer.write(&batch).unwrap();
//! ```
use ;