71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// Date: Thu Nov 22 13:57:56 CST 2012
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#ifndef BUTIL_BINARY_PRINTER_H
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#define BUTIL_BINARY_PRINTER_H
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#include "butil/strings/string_piece.h"
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namespace butil {
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class IOBuf;
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// Print binary content within max length.
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// The printing format is optimized for humans and may change in future.
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class ToPrintable {
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public:
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static const size_t DEFAULT_MAX_LENGTH = 64;
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ToPrintable(const IOBuf& b, size_t max_length = DEFAULT_MAX_LENGTH)
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: _iobuf(&b), _max_length(max_length) {}
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ToPrintable(const StringPiece& str, size_t max_length = DEFAULT_MAX_LENGTH)
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: _iobuf(NULL), _str(str), _max_length(max_length) {}
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ToPrintable(const void* data, size_t n, size_t max_length = DEFAULT_MAX_LENGTH)
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: _iobuf(NULL), _str((const char*)data, n), _max_length(max_length) {}
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void Print(std::ostream& os) const;
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private:
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const IOBuf* _iobuf;
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StringPiece _str;
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size_t _max_length;
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};
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// Keep old name for compatibility.
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typedef ToPrintable PrintedAsBinary;
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inline std::ostream& operator<<(std::ostream& os, const ToPrintable& p) {
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p.Print(os);
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return os;
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}
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// Convert binary data to a printable string.
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std::string ToPrintableString(const IOBuf& data,
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size_t max_length = ToPrintable::DEFAULT_MAX_LENGTH);
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std::string ToPrintableString(const StringPiece& data,
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size_t max_length = ToPrintable::DEFAULT_MAX_LENGTH);
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std::string ToPrintableString(const void* data, size_t n,
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size_t max_length = ToPrintable::DEFAULT_MAX_LENGTH);
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} // namespace butil
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#endif // BUTIL_BINARY_PRINTER_H
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