diff options
Diffstat (limited to 'unicode/unicodecpp.C')
| -rw-r--r-- | unicode/unicodecpp.C | 197 |
1 files changed, 193 insertions, 4 deletions
diff --git a/unicode/unicodecpp.C b/unicode/unicodecpp.C index ca139cc..04d2893 100644 --- a/unicode/unicodecpp.C +++ b/unicode/unicodecpp.C @@ -1,5 +1,5 @@ /* -** Copyright 2011-2014 Double Precision, Inc. +** Copyright 2011-2020 Double Precision, Inc. ** See COPYING for distribution information. ** */ @@ -596,7 +596,8 @@ extern "C" { void *arg) { auto p=reinterpret_cast<const std::function<void (size_t, - size_t)> *> + size_t) + noexcept> *> (arg); (*p)(i, cnt); @@ -605,7 +606,8 @@ extern "C" { int unicode::bidi_reorder(std::u32string &string, std::vector<unicode_bidi_level_t> &levels, - const std::function<void (size_t, size_t)> &lambda) + const std::function<void (size_t, size_t) + noexcept> &lambda) { size_t s=string.size(); @@ -624,7 +626,8 @@ int unicode::bidi_reorder(std::u32string &string, } void unicode::bidi_reorder(std::vector<unicode_bidi_level_t> &levels, - const std::function<void (size_t, size_t)> &lambda) + const std::function<void (size_t, size_t) + noexcept> &lambda) { size_t s=levels.size(); @@ -636,3 +639,189 @@ void unicode::bidi_reorder(std::vector<unicode_bidi_level_t> &levels, (reinterpret_cast<const void *>(&lambda))); } + +extern "C" { + static void removed_callback(size_t i, + void *arg) + { + auto p=reinterpret_cast<const std::function<void (size_t) + noexcept> *> + (arg); + + (*p)(i); + } +} + +void unicode::bidi_cleanup(std::u32string &string, + const std::function<void (size_t) noexcept> &lambda) +{ + if (string.empty()) + return; + + size_t n=unicode_bidi_cleanup(&string[0], + 0, + string.size(), + removed_callback, + const_cast<void *> + (reinterpret_cast<const void *> + (&lambda))); + + string.resize(n); +} + +int unicode::bidi_cleanup(std::u32string &string, + std::vector<unicode_bidi_level_t> &levels, + const std::function<void (size_t) noexcept> &lambda) +{ + if (levels.size() != string.size()) + return -1; + + size_t n=unicode_bidi_cleanup(&string[0], + &levels[0], + string.size(), + removed_callback, + const_cast<void *> + (reinterpret_cast<const void *> + (&lambda))); + + string.resize(n); + levels.resize(n); + return 0; +} + + +void unicode::bidi_extra_cleanup(std::u32string &string, + const std::function<void (size_t) noexcept> + &lambda) +{ + if (string.empty()) + return; + + size_t n=unicode_bidi_extra_cleanup(&string[0], + 0, + string.size(), + removed_callback, + const_cast<void *> + (reinterpret_cast<const void *> + (&lambda))); + + string.resize(n); +} + +int unicode::bidi_extra_cleanup(std::u32string &string, + std::vector<unicode_bidi_level_t> &levels, + const std::function<void (size_t) noexcept> + &lambda) +{ + if (levels.size() != string.size()) + return -1; + + size_t n=unicode_bidi_extra_cleanup(&string[0], + &levels[0], + string.size(), + removed_callback, + const_cast<void *> + (reinterpret_cast<const void *> + (&lambda))); + + string.resize(n); + levels.resize(n); + return 0; +} + +int unicode::bidi_logical_order(std::u32string &string, + std::vector<unicode_bidi_level_t> &levels, + unicode_bidi_level_t paragraph_embedding, + const std::function<void (size_t, size_t) + noexcept> &lambda) +{ + if (string.size() != levels.size()) + return -1; + + if (string.empty()) + return 0; + + unicode_bidi_logical_order(&string[0], &levels[0], string.size(), + paragraph_embedding, + &reorder_callback, + const_cast<void *> + (reinterpret_cast<const void *>(&lambda))); + return 0; +} + +void unicode::bidi_logical_order(std::vector<unicode_bidi_level_t> &levels, + unicode_bidi_level_t paragraph_embedding, + const std::function<void (size_t, size_t) + noexcept> &lambda) +{ + if (levels.size() == 0) + return; + + unicode_bidi_logical_order(NULL, &levels[0], levels.size(), + paragraph_embedding, + &reorder_callback, + const_cast<void *> + (reinterpret_cast<const void *>(&lambda))); +} + +extern "C" { + static void embed_callback(const char32_t *string, + size_t n, + void *arg) + { + auto p=reinterpret_cast<const std::function<void + (const char32_t *, + size_t n) + noexcept> *>(arg); + (*p)(string, n); + } +} + +int unicode::bidi_embed(const std::u32string &string, + const std::vector<unicode_bidi_level_t> &levels, + unicode_bidi_level_t paragraph_embedding, + const std::function<void (const char32_t *string, + size_t n) noexcept> + &lambda) +{ + if (string.size() != levels.size()) + return -1; + + if (string.empty()) + return 0; + + unicode_bidi_embed(&string[0], &levels[0], string.size(), + paragraph_embedding, + embed_callback, + const_cast<void *> + (reinterpret_cast<const void *> + (&lambda))); + return 0; +} + +std::u32string unicode::bidi_embed(const std::u32string &string, + const std::vector<unicode_bidi_level_t + > &levels, + unicode_bidi_level_t paragraph_embedding) +{ + std::u32string new_string; + + (void)bidi_embed(string, levels, paragraph_embedding, + [&] + (const char32_t *string, + size_t n) + { + new_string.insert(new_string.end(), + string, string+n); + }); + + return new_string; +} + +char32_t unicode::bidi_embed_paragraph_level(const std::u32string &string, + unicode_bidi_level_t level) +{ + return unicode_bidi_embed_paragraph_level(string.c_str(), + string.size(), + level); +} |