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1 | // SPDX-FileCopyrightText: 2022-2023 Dennis Gläser <dennis.glaeser@iws.uni-stuttgart.de> | ||
2 | // SPDX-License-Identifier: MIT | ||
3 | /*! | ||
4 | * \file | ||
5 | * \ingroup VTK | ||
6 | * \brief Helper functions to get the VTK-specific names of things. | ||
7 | */ | ||
8 | #ifndef GRIDFORMAT_VTK_ATTRIBUTES_HPP_ | ||
9 | #define GRIDFORMAT_VTK_ATTRIBUTES_HPP_ | ||
10 | |||
11 | #include <bit> | ||
12 | |||
13 | #include <gridformat/common/precision.hpp> | ||
14 | #include <gridformat/common/exceptions.hpp> | ||
15 | #include <gridformat/common/callable_overload_set.hpp> | ||
16 | #include <gridformat/vtk/common.hpp> | ||
17 | |||
18 | // forward declarations | ||
19 | namespace GridFormat { class DynamicPrecision; } | ||
20 | namespace GridFormat::Compression { class LZMA; class ZLIB; class LZ4; } | ||
21 | namespace GridFormat::Encoding { struct Ascii; struct Base64; struct RawBinary; } | ||
22 | // end forward declarations | ||
23 | |||
24 | namespace GridFormat::VTK { | ||
25 | |||
26 | //! \addtogroup VTK | ||
27 | //! \{ | ||
28 | |||
29 | 139144 | std::string attribute_name(const DynamicPrecision& prec) { | |
30 |
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139144 | std::string prefix = prec.is_integral() ? (prec.is_signed() ? "Int" : "UInt") : "Float"; |
31 |
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278288 | return prefix + std::to_string(prec.size_in_bytes()*8); |
32 | 139144 | } | |
33 | |||
34 | 8139 | std::string attribute_name(std::endian e) { | |
35 |
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16278 | return e == std::endian::little ? "LittleEndian" : "BigEndian"; |
36 | } | ||
37 | |||
38 |
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3933 | std::string attribute_name(const Encoding::Ascii&) { return "ascii"; } |
39 |
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19101 | std::string attribute_name(const Encoding::Base64&) { return "base64"; } |
40 |
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11388 | std::string attribute_name(const Encoding::RawBinary&) { return "raw"; } |
41 | |||
42 |
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5244 | std::string attribute_name(const Compression::LZMA&) { return "vtkLZMADataCompressor"; }; |
43 |
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6555 | std::string attribute_name(const Compression::ZLIB&) { return "vtkZLibDataCompressor"; }; |
44 |
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13857 | std::string attribute_name(const Compression::LZ4&) { return "vtkLZ4DataCompressor"; }; |
45 | |||
46 |
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106191 | std::string data_format_name(const Encoding::RawBinary&, const DataFormat::Appended&) { return "appended"; } |
47 |
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243012 | std::string data_format_name(const Encoding::Base64&, const DataFormat::Appended&) { return "appended"; } |
48 |
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26535 | std::string data_format_name(const Encoding::Base64&, const DataFormat::Inlined&) { return "binary"; } |
49 |
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53928 | std::string data_format_name(const Encoding::Ascii&, const DataFormat::Inlined&) { return "ascii"; } |
50 | |||
51 | template<typename Enc, typename Format> | ||
52 | 1188 | std::string data_format_name(const Enc& e, const Format& format) { | |
53 |
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1188 | const std::string encoder_name = attribute_name(e); |
54 |
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1188 | const std::string format_name = Overload{ |
55 | 297 | [] (const DataFormat::Appended&) { return "appended"; }, | |
56 | 297 | [] (const DataFormat::Inlined&) { return "inlined"; } | |
57 | } (format); | ||
58 |
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1188 | const std::string other_format_name = Overload{ |
59 | 297 | [] (const DataFormat::Appended&) { return "GridFormat::VTK::inlined"; }, | |
60 | 297 | [] (const DataFormat::Inlined&) { return "GridFormat::VTK::appended"; } | |
61 | } (format); | ||
62 |
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2376 | throw ValueError( |
63 |
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2376 | "VTK's '" + format_name + "' data format cannot be used with " + encoder_name |
64 |
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3564 | + " encoding. Please choose '" + other_format_name + "' or a different encoder." |
65 | ); | ||
66 | 3564 | } | |
67 | |||
68 | 10204 | std::endian from_endian_attribute(const std::string& endian) { | |
69 |
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10204 | if (endian == "LittleEndian") |
70 | 9866 | return std::endian::little; | |
71 |
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338 | if (endian == "BigEndian") |
72 | 338 | return std::endian::big; | |
73 | ✗ | throw ValueError("Unsupported endian attribute: '" + endian + "'"); | |
74 | } | ||
75 | |||
76 | 21574 | DynamicPrecision from_precision_attribute(const std::string& prec) { | |
77 |
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21574 | if (prec.starts_with("Int")) { |
78 |
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793 | const auto bytes = prec.substr(3); |
79 |
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793 | if (bytes == "8") return int8; |
80 |
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793 | if (bytes == "16") return int16; |
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793 | if (bytes == "32") return int32; |
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702 | if (bytes == "64") return int64; |
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21574 | } else if (prec.starts_with("UInt")) { |
84 |
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11619 | const auto bytes = prec.substr(4); |
85 |
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11619 | if (bytes == "8") return uint8; |
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11338 | if (bytes == "16") return uint16; |
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11338 | if (bytes == "32") return uint32; |
88 |
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9986 | if (bytes == "64") return uint64; |
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20781 | } else if (prec.starts_with("Float")) { |
90 |
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8616 | const auto bytes = prec.substr(5); |
91 |
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8616 | if (bytes == "32") return float32; |
92 |
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4613 | if (bytes == "64") return float64; |
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9162 | } else if (prec == "String") { |
94 | 546 | return {Precision<char>{}}; | |
95 | } | ||
96 | ✗ | throw ValueError("Cannot parse precision from '" + prec + "'"); | |
97 | } | ||
98 | |||
99 | //! \} group VTK | ||
100 | |||
101 | } // namespace GridFormat::VTK | ||
102 | |||
103 | #endif // GRIDFORMAT_VTK_ATTRIBUTES_HPP_ | ||
104 |