1UNICODE::CANONICAL(3) Courier Unicode Library UNICODE::CANONICAL(3)
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6 unicode::canonical, unicode::decompose,
7 unicode::decompose_default_reallocate, unicode::compose,
8 unicode::compose_default_callback - unicode canonical normalization and
9 denormalization
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12 #include <courier-unicode.h>
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14 constexpr int decompose_flag_qc=UNICODE_DECOMPOSE_FLAG_QC;
15 constexpr int decompose_flag_compat=UNICODE_DECOMPOSE_FLAG_COMPAT;
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17 constexpr int compose_flag_removeunused=UNICODE_COMPOSE_FLAG_REMOVEUNUSED;
18 constexpr int compose_flag_oneshot=UNICODE_COMPOSE_FLAG_ONESHOT;
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20 void decompose_default_reallocate(std::u32string &string,
21 const std::vector<std::tuple<size_t, size_t>> &list);
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23 void decompose(std::u32string &string, int flags=0,
24 const std::function<void (std::u32string &, const std::vector<std::tuple<size_t, size_t>>)> &reallocate=decompose_default_reallocate);
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26 void compose_default_callback(unicode_composition_t &compositions);
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28 void compose(std::u32string &string, int flags=0,
29 const std::function<void (unicode_composition_t &)> &cb=compose_default_reallocate);
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32 These functions implement the C++ interface for the Unicode Canonical
33 Decomposition and Composition[1], See the description of the underlying
34 unicode_canonical(3) C library API for more information. C++ specific
35 notes:
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37 • The C++ decomposition reallocate callback receives a single vector
38 of offset and size tuples instead of two separate arrays or
39 vectors. unicode::decompose_default_reallocate() is the C++
40 version of the default reallocate callback. It receives the
41 receiving the same tuple vector parameter, too. The C++ interface
42 use std::u32strings to represent Unicode text strings, and
43 unicode::decompose_default_reallocate() resizes it.
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45 Like the C callback, the C++ one gets called 0 or more times.
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47 • unicode::compose() takes care of initializing, applying, and
48 de-initialization the unicode_composition_t object, for
49 decomposition. The callback receives a reference to the
50 unicode_composition_t object, which the callback should not modify
51 in any way.
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54 courier-unicode(7), unicode_canonical(3).
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57 Sam Varshavchik
58 Author
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61 1. Unicode Canonical Decomposition and Composition
62 https://www.unicode.org/reports/tr15/tr15-50.html
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66Courier Unicode Library 04/16/2022 UNICODE::CANONICAL(3)