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[Feature] Support Binary Data Type (StarRocks#21075) (StarRocks#33044)
Signed-off-by: shuming.li <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| // Copyright 2021-present StarRocks, Inc. All rights reserved. | ||
| // | ||
| // Licensed 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 | ||
| // | ||
| // https://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. | ||
|
|
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| #include "formats/csv/varbinary_converter.h" | ||
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| #include <iomanip> | ||
| #include <iostream> | ||
| #include <sstream> | ||
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| #include "column/binary_column.h" | ||
| #include "gutil/strings/escaping.h" | ||
| #include "runtime/descriptors.h" | ||
| #include "runtime/types.h" | ||
| #include "util/string_parser.hpp" | ||
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| namespace starrocks::csv { | ||
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| Status VarBinaryConverter::write_string(OutputStream* os, const Column& column, size_t row_num, | ||
| const Options& options) const { | ||
| auto* binary = down_cast<const BinaryColumn*>(&column); | ||
| auto& bytes = binary->get_bytes(); | ||
| auto& offsets = binary->get_offset(); | ||
| // TODO: support binary type config later | ||
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| Slice str(&bytes[offsets[row_num]], offsets[row_num + 1] - offsets[row_num]); | ||
| std::stringstream ss; | ||
| ss << std::hex << std::uppercase << std::setfill('0'); | ||
| for (int i = 0; i < str.size; ++i) { | ||
| // setw is not sticky. stringstream only converts integral values, | ||
| // so a cast to int is required, but only convert the least significant byte to hex. | ||
| ss << std::setw(2) << (static_cast<int32_t>(str.data[i]) & 0xFF); | ||
| } | ||
| // from binary to hex | ||
| return os->write(Slice(ss.str())); | ||
| } | ||
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| Status VarBinaryConverter::write_quoted_string(OutputStream* os, const Column& column, size_t row_num, | ||
| const Options& options) const { | ||
| RETURN_IF_ERROR(os->write('"')); | ||
| RETURN_IF_ERROR(write_string(os, column, row_num, options)); | ||
| return os->write('"'); | ||
| } | ||
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| bool VarBinaryConverter::read_string(Column* column, const Slice& s, const Options& options) const { | ||
| int max_size = 0; | ||
| if (options.type_desc != nullptr) { | ||
| max_size = options.type_desc->len; | ||
| } | ||
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| char* data_ptr = static_cast<char*>(s.data); | ||
| int start = StringParser::skip_leading_whitespace(data_ptr, s.size); | ||
| int len = s.size - start; | ||
| // hex's length should be 2x. | ||
| if (len % 2 != 0) { | ||
| LOG(WARNING) << "Column [" << column->get_name() << "]'s length invalid:" << s.to_string(); | ||
| return false; | ||
| } | ||
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| // hex's length should not greater than MAX_VARCHAR_LENGTH. | ||
| int hex_len = len / 2; | ||
| if (UNLIKELY((hex_len > TypeDescriptor::MAX_VARCHAR_LENGTH) || (max_size > 0 && hex_len > max_size))) { | ||
| LOG(WARNING) << "Column [" << column->get_name() << "]'s length exceed max varbinary length."; | ||
| return false; | ||
| } | ||
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| // check slice is valid | ||
| for (int i = start; i < s.size; i++) { | ||
| if (LIKELY((s[i] >= '0' && s[i] <= '9') || (s[i] >= 'A' && s[i] <= 'F') || (s[i] >= 'a' && s[i] <= 'f'))) { | ||
| continue; | ||
| } else { | ||
| LOG(WARNING) << "Invalid input's not a legal hex-encoded value:" << s.to_string(); | ||
| return false; | ||
| } | ||
| } | ||
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| // from string to binary | ||
| std::unique_ptr<char[]> p; | ||
| p.reset(new char[hex_len]); | ||
| strings::a2b_hex(data_ptr + start, p.get(), hex_len); | ||
| down_cast<BinaryColumn*>(column)->append(Slice(p.get(), hex_len)); | ||
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| return true; | ||
| } | ||
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| bool VarBinaryConverter::read_quoted_string(Column* column, const Slice& tmp_s, const Options& options) const { | ||
| Slice s = tmp_s; | ||
| // TODO: need write quote for binary? | ||
| if (!remove_enclosing_quotes<'"'>(&s)) { | ||
| return false; | ||
| } | ||
| return read_string(column, s, options); | ||
| } | ||
|
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| } // namespace starrocks::csv |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| // Copyright 2021-present StarRocks, Inc. All rights reserved. | ||
| // | ||
| // Licensed 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 | ||
| // | ||
| // https://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. | ||
|
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| #pragma once | ||
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| #include "formats/csv/converter.h" | ||
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| namespace starrocks::csv { | ||
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| class VarBinaryConverter final : public Converter { | ||
| public: | ||
| Status write_string(OutputStream* os, const Column& column, size_t row_num, const Options& options) const override; | ||
| Status write_quoted_string(OutputStream* os, const Column& column, size_t row_num, | ||
| const Options& options) const override; | ||
| bool read_string(Column* column, const Slice& s, const Options& options) const override; | ||
| bool read_quoted_string(Column* column, const Slice& s, const Options& options) const override; | ||
| }; | ||
|
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| } // namespace starrocks::csv |
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