1 | // |
2 | // HexBinaryDecoder.h |
3 | // |
4 | // Library: Foundation |
5 | // Package: Streams |
6 | // Module: HexBinary |
7 | // |
8 | // Definition of the HexBinaryDecoder class. |
9 | // |
10 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
11 | // and Contributors. |
12 | // |
13 | // SPDX-License-Identifier: BSL-1.0 |
14 | // |
15 | |
16 | |
17 | #ifndef Foundation_HexBinaryDecoder_INCLUDED |
18 | #define Foundation_HexBinaryDecoder_INCLUDED |
19 | |
20 | |
21 | #include "Poco/Foundation.h" |
22 | #include "Poco/UnbufferedStreamBuf.h" |
23 | #include <istream> |
24 | |
25 | |
26 | namespace Poco { |
27 | |
28 | |
29 | class Foundation_API HexBinaryDecoderBuf: public UnbufferedStreamBuf |
30 | /// This streambuf decodes all hexBinary-encoded data read |
31 | /// from the istream connected to it. |
32 | /// In hexBinary encoding, each binary octet is encoded as a character tuple, |
33 | /// consisting of two hexadecimal digits ([0-9a-fA-F]) representing the octet code. |
34 | /// See also: XML Schema Part 2: Datatypes (http://www.w3.org/TR/xmlschema-2/), |
35 | /// section 3.2.15. |
36 | /// |
37 | /// Note: For performance reasons, the characters |
38 | /// are read directly from the given istream's |
39 | /// underlying streambuf, so the state |
40 | /// of the istream will not reflect that of |
41 | /// its streambuf. |
42 | { |
43 | public: |
44 | HexBinaryDecoderBuf(std::istream& istr); |
45 | ~HexBinaryDecoderBuf(); |
46 | |
47 | private: |
48 | int readFromDevice(); |
49 | int readOne(); |
50 | |
51 | std::streambuf& _buf; |
52 | }; |
53 | |
54 | |
55 | class Foundation_API HexBinaryDecoderIOS: public virtual std::ios |
56 | /// The base class for HexBinaryDecoder. |
57 | /// |
58 | /// This class is needed to ensure the correct initialization |
59 | /// order of the stream buffer and base classes. |
60 | { |
61 | public: |
62 | HexBinaryDecoderIOS(std::istream& istr); |
63 | ~HexBinaryDecoderIOS(); |
64 | HexBinaryDecoderBuf* rdbuf(); |
65 | |
66 | protected: |
67 | HexBinaryDecoderBuf _buf; |
68 | }; |
69 | |
70 | |
71 | class Foundation_API HexBinaryDecoder: public HexBinaryDecoderIOS, public std::istream |
72 | /// This istream decodes all hexBinary-encoded data read |
73 | /// from the istream connected to it. |
74 | /// In hexBinary encoding, each binary octet is encoded as a character tuple, |
75 | /// consisting of two hexadecimal digits ([0-9a-fA-F]) representing the octet code. |
76 | /// See also: XML Schema Part 2: Datatypes (http://www.w3.org/TR/xmlschema-2/), |
77 | /// section 3.2.15. |
78 | /// |
79 | /// Note: For performance reasons, the characters |
80 | /// are read directly from the given istream's |
81 | /// underlying streambuf, so the state |
82 | /// of the istream will not reflect that of |
83 | /// its streambuf. |
84 | { |
85 | public: |
86 | HexBinaryDecoder(std::istream& istr); |
87 | ~HexBinaryDecoder(); |
88 | }; |
89 | |
90 | |
91 | } // namespace Poco |
92 | |
93 | |
94 | #endif // Foundation_HexBinaryDecoder_INCLUDED |
95 | |