FM / util

/usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util/

/usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util

Name	Size	Mode	Actions
algorithm.h	1229	0644	edit dl rm
aligned_storage.h	4302	0644	edit dl rm
align_util.h	2636	0644	edit dl rm
async_generator.h	64088	0644	edit dl rm
async_util.h	9633	0644	edit dl rm
atomic_shared_ptr.h	3640	0644	edit dl rm
base64.h	1098	0644	edit dl rm
basic_decimal.h	20334	0644	edit dl rm
benchmark_util.h	4584	0644	edit dl rm
bitmap.h	17463	0644	edit dl rm
bitmap_builders.h	1563	0644	edit dl rm
bitmap_generate.h	3563	0644	edit dl rm
bitmap_ops.h	9084	0644	edit dl rm
bitmap_reader.h	8347	0644	edit dl rm
bitmap_visit.h	3460	0644	edit dl rm
bitmap_writer.h	9360	0644	edit dl rm
bitset_stack.h	2789	0644	edit dl rm
bit_block_counter.h	19141	0644	edit dl rm
bit_run_reader.h	16599	0644	edit dl rm
bit_stream_utils.h	16986	0644	edit dl rm
bit_util.h	11568	0644	edit dl rm
bpacking.h	1175	0644	edit dl rm
bpacking64_default.h	195934	0644	edit dl rm
bpacking_avx2.h	1009	0644	edit dl rm
bpacking_avx512.h	1011	0644	edit dl rm
bpacking_default.h	103232	0644	edit dl rm
bpacking_neon.h	1009	0644	edit dl rm
bpacking_simd128_generated.h	98529	0644	edit dl rm
bpacking_simd256_generated.h	77475	0644	edit dl rm
bpacking_simd512_generated.h	67081	0644	edit dl rm
byte_stream_split.h	28784	0644	edit dl rm
cancel.h	2911	0644	edit dl rm
checked_cast.h	2076	0644	edit dl rm
compare.h	1981	0644	edit dl rm
compression.h	7367	0644	edit dl rm
concurrent_map.h	1775	0644	edit dl rm
config.h	1659	0644	edit dl rm
converter.h	14657	0644	edit dl rm
counting_semaphore.h	2251	0644	edit dl rm
cpu_info.h	4724	0644	edit dl rm
decimal.h	11687	0644	edit dl rm
delimiting.h	7335	0644	edit dl rm
dispatch.h	3235	0644	edit dl rm
double_conversion.h	1195	0644	edit dl rm
endian.h	8071	0644	edit dl rm
formatting.h	20612	0644	edit dl rm
functional.h	5612	0644	edit dl rm
future.h	36168	0644	edit dl rm
future_iterator.h	2517	0644	edit dl rm
hashing.h	30633	0644	edit dl rm
hash_util.h	1914	0644	edit dl rm
int_util.h	4284	0644	edit dl rm
io_util.h	10326	0644	edit dl rm
iterator.h	18123	0644	edit dl rm
key_value_metadata.h	3579	0644	edit dl rm
launder.h	1051	0644	edit dl rm
logging.h	9338	0644	edit dl rm
macros.h	7349	0644	edit dl rm
make_unique.h	1475	0644	edit dl rm
map.h	2476	0644	edit dl rm
math_constants.h	1106	0644	edit dl rm
memory.h	1566	0644	edit dl rm
mutex.h	1833	0644	edit dl rm
optional.h	1174	0644	edit dl rm
parallel.h	3616	0644	edit dl rm
pcg_random.h	1146	0644	edit dl rm
print.h	1725	0644	edit dl rm
queue.h	1017	0644	edit dl rm
range.h	4834	0644	edit dl rm
rle_encoding.h	31029	0644	edit dl rm
simd.h	1333	0644	edit dl rm
small_vector.h	14660	0644	edit dl rm
sort.h	2466	0644	edit dl rm
spaced.h	3567	0644	edit dl rm
stopwatch.h	1401	0644	edit dl rm
string.h	2570	0644	edit dl rm
string_builder.h	2446	0644	edit dl rm
string_view.h	1269	0644	edit dl rm
task_group.h	4362	0644	edit dl rm
tdigest.h	3052	0644	edit dl rm
test_common.h	2837	0644	edit dl rm
thread_pool.h	15338	0644	edit dl rm
time.h	2988	0644	edit dl rm
trie.h	7157	0644	edit dl rm
type_fwd.h	1409	0644	edit dl rm
type_traits.h	2894	0644	edit dl rm
ubsan.h	2777	0644	edit dl rm
unreachable.h	926	0644	edit dl rm
uri.h	3297	0644	edit dl rm
utf8.h	18780	0644	edit dl rm
value_parsing.h	27056	0644	edit dl rm
variant.h	13728	0644	edit dl rm
vector.h	5665	0644	edit dl rm
visibility.h	1463	0644	edit dl rm
windows_compatibility.h	1260	0644	edit dl rm
windows_fixup.h	1379	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util/delimiting.h (7335B)

// 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.

#pragma once

#include <cstdint>
#include <memory>

#include "arrow/status.h"
#include "arrow/util/macros.h"
#include "arrow/util/string_view.h"
#include "arrow/util/visibility.h"

namespace arrow {

class Buffer;

class ARROW_EXPORT BoundaryFinder {
 public:
  BoundaryFinder() = default;

virtual ~BoundaryFinder();

/// \brief Find the position of the first delimiter inside block
  ///
  /// `partial` is taken to be the beginning of the block, and `block`
  /// its continuation.  Also, `partial` doesn't contain a delimiter.
  ///
  /// The returned `out_pos` is relative to `block`'s start and should point
  /// to the first character after the first delimiter.
  /// `out_pos` will be -1 if no delimiter is found.
  virtual Status FindFirst(util::string_view partial, util::string_view block,
                           int64_t* out_pos) = 0;

/// \brief Find the position of the last delimiter inside block
  ///
  /// The returned `out_pos` is relative to `block`'s start and should point
  /// to the first character after the last delimiter.
  /// `out_pos` will be -1 if no delimiter is found.
  virtual Status FindLast(util::string_view block, int64_t* out_pos) = 0;

/// \brief Find the position of the Nth delimiter inside the block
  ///
  /// `partial` is taken to be the beginning of the block, and `block`
  /// its continuation.  Also, `partial` doesn't contain a delimiter.
  ///
  /// The returned `out_pos` is relative to `block`'s start and should point
  /// to the first character after the first delimiter.
  /// `out_pos` will be -1 if no delimiter is found.
  ///
  /// The returned `num_found` is the number of delimiters actually found
  virtual Status FindNth(util::string_view partial, util::string_view block,
                         int64_t count, int64_t* out_pos, int64_t* num_found) = 0;

static constexpr int64_t kNoDelimiterFound = -1;

protected:
  ARROW_DISALLOW_COPY_AND_ASSIGN(BoundaryFinder);
};

ARROW_EXPORT
std::shared_ptr<BoundaryFinder> MakeNewlineBoundaryFinder();

/// \brief A reusable block-based chunker for delimited data
///
/// The chunker takes a block of delimited data and helps carve a sub-block
/// which begins and ends on delimiters (suitable for consumption by parsers
/// which can only parse whole objects).
class ARROW_EXPORT Chunker {
 public:
  explicit Chunker(std::shared_ptr<BoundaryFinder> delimiter);
  ~Chunker();

/// \brief Carve up a chunk in a block of data to contain only whole objects
  ///
  /// Pre-conditions:
  /// - `block` is the start of a valid block of delimited data
  ///   (i.e. starts just after a delimiter)
  ///
  /// Post-conditions:
  /// - block == whole + partial
  /// - `whole` is a valid block of delimited data
  ///   (i.e. starts just after a delimiter and ends with a delimiter)
  /// - `partial` doesn't contain an entire delimited object
  ///   (IOW: `partial` is generally small)
  ///
  /// This method will look for the last delimiter in `block` and may
  /// therefore be costly.
  ///
  /// \param[in] block data to be chunked
  /// \param[out] whole subrange of block containing whole delimited objects
  /// \param[out] partial subrange of block starting with a partial delimited object
  Status Process(std::shared_ptr<Buffer> block, std::shared_ptr<Buffer>* whole,
                 std::shared_ptr<Buffer>* partial);

/// \brief Carve the completion of a partial object out of a block
  ///
  /// Pre-conditions:
  /// - `partial` is the start of a valid block of delimited data
  ///   (i.e. starts just after a delimiter)
  /// - `block` follows `partial` in file order
  ///
  /// Post-conditions:
  /// - block == completion + rest
  /// - `partial + completion` is a valid block of delimited data
  ///   (i.e. starts just after a delimiter and ends with a delimiter)
  /// - `completion` doesn't contain an entire delimited object
  ///   (IOW: `completion` is generally small)
  ///
  /// This method will look for the first delimiter in `block` and should
  /// therefore be reasonably cheap.
  ///
  /// \param[in] partial incomplete delimited data
  /// \param[in] block delimited data following partial
  /// \param[out] completion subrange of block containing the completion of partial
  /// \param[out] rest subrange of block containing what completion does not cover
  Status ProcessWithPartial(std::shared_ptr<Buffer> partial,
                            std::shared_ptr<Buffer> block,
                            std::shared_ptr<Buffer>* completion,
                            std::shared_ptr<Buffer>* rest);

/// \brief Like ProcessWithPartial, but for the last block of a file
  ///
  /// This method allows for a final delimited object without a trailing delimiter
  /// (ProcessWithPartial would return an error in that case).
  ///
  /// Pre-conditions:
  /// - `partial` is the start of a valid block of delimited data
  /// - `block` follows `partial` in file order and is the last data block
  ///
  /// Post-conditions:
  /// - block == completion + rest
  /// - `partial + completion` is a valid block of delimited data
  /// - `completion` doesn't contain an entire delimited object
  ///   (IOW: `completion` is generally small)
  ///
  Status ProcessFinal(std::shared_ptr<Buffer> partial, std::shared_ptr<Buffer> block,
                      std::shared_ptr<Buffer>* completion, std::shared_ptr<Buffer>* rest);

/// \brief Skip count number of rows
  /// Pre-conditions:
  /// - `partial` is the start of a valid block of delimited data
  ///   (i.e. starts just after a delimiter)
  /// - `block` follows `partial` in file order
  ///
  /// Post-conditions:
  /// - `count` is updated to indicate the number of rows that still need to be skipped
  /// - If `count` is > 0 then `rest` is an incomplete block that should be a future
  /// `partial`
  /// - Else `rest` could be one or more valid blocks of delimited data which need to be
  /// parsed
  ///
  /// \param[in] partial incomplete delimited data
  /// \param[in] block delimited data following partial
  /// \param[in] final whether this is the final chunk
  /// \param[in,out] count number of rows that need to be skipped
  /// \param[out] rest subrange of block containing what was not skipped
  Status ProcessSkip(std::shared_ptr<Buffer> partial, std::shared_ptr<Buffer> block,
                     bool final, int64_t* count, std::shared_ptr<Buffer>* rest);

protected:
  ARROW_DISALLOW_COPY_AND_ASSIGN(Chunker);

std::shared_ptr<BoundaryFinder> boundary_finder_;
};

}  // namespace arrow

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