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authorVadim Dashevskiy <watcherhd@gmail.com>2013-05-17 21:10:14 +0000
committerVadim Dashevskiy <watcherhd@gmail.com>2013-05-17 21:10:14 +0000
commit03e7b6d63bdfff3e4b5b7d0eb6899e5bf0108e4e (patch)
tree820abb884bfc0393316691094d78b3c06baec3b0 /plugins/New_GPG/src/include/utf8/unchecked.h
parent61b053584dec4563b308f98d210d7d0b84999983 (diff)
- New_GPG: reinstated
git-svn-id: http://svn.miranda-ng.org/main/trunk@4716 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/New_GPG/src/include/utf8/unchecked.h')
-rw-r--r--plugins/New_GPG/src/include/utf8/unchecked.h228
1 files changed, 228 insertions, 0 deletions
diff --git a/plugins/New_GPG/src/include/utf8/unchecked.h b/plugins/New_GPG/src/include/utf8/unchecked.h
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+++ b/plugins/New_GPG/src/include/utf8/unchecked.h
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+// Copyright 2006 Nemanja Trifunovic
+
+/*
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+*/
+
+
+#ifndef UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
+#define UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
+
+#include "core.h"
+
+namespace utf8
+{
+ namespace unchecked
+ {
+ template <typename octet_iterator>
+ octet_iterator append(uint32_t cp, octet_iterator result)
+ {
+ if (cp < 0x80) // one octet
+ *(result++) = static_cast<uint8_t>(cp);
+ else if (cp < 0x800) { // two octets
+ *(result++) = static_cast<uint8_t>((cp >> 6) | 0xc0);
+ *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
+ }
+ else if (cp < 0x10000) { // three octets
+ *(result++) = static_cast<uint8_t>((cp >> 12) | 0xe0);
+ *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
+ *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
+ }
+ else { // four octets
+ *(result++) = static_cast<uint8_t>((cp >> 18) | 0xf0);
+ *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f)| 0x80);
+ *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
+ *(result++) = static_cast<uint8_t>((cp & 0x3f) | 0x80);
+ }
+ return result;
+ }
+
+ template <typename octet_iterator>
+ uint32_t next(octet_iterator& it)
+ {
+ uint32_t cp = utf8::internal::mask8(*it);
+ typename std::iterator_traits<octet_iterator>::difference_type length = utf8::internal::sequence_length(it);
+ switch (length) {
+ case 1:
+ break;
+ case 2:
+ it++;
+ cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f);
+ break;
+ case 3:
+ ++it;
+ cp = ((cp << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
+ ++it;
+ cp += (*it) & 0x3f;
+ break;
+ case 4:
+ ++it;
+ cp = ((cp << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);
+ ++it;
+ cp += (utf8::internal::mask8(*it) << 6) & 0xfff;
+ ++it;
+ cp += (*it) & 0x3f;
+ break;
+ }
+ ++it;
+ return cp;
+ }
+
+ template <typename octet_iterator>
+ uint32_t peek_next(octet_iterator it)
+ {
+ return utf8::unchecked::next(it);
+ }
+
+ template <typename octet_iterator>
+ uint32_t prior(octet_iterator& it)
+ {
+ while (utf8::internal::is_trail(*(--it))) ;
+ octet_iterator temp = it;
+ return utf8::unchecked::next(temp);
+ }
+
+ // Deprecated in versions that include prior, but only for the sake of consistency (see utf8::previous)
+ template <typename octet_iterator>
+ inline uint32_t previous(octet_iterator& it)
+ {
+ return utf8::unchecked::prior(it);
+ }
+
+ template <typename octet_iterator, typename distance_type>
+ void advance (octet_iterator& it, distance_type n)
+ {
+ for (distance_type i = 0; i < n; ++i)
+ utf8::unchecked::next(it);
+ }
+
+ template <typename octet_iterator>
+ typename std::iterator_traits<octet_iterator>::difference_type
+ distance (octet_iterator first, octet_iterator last)
+ {
+ typename std::iterator_traits<octet_iterator>::difference_type dist;
+ for (dist = 0; first < last; ++dist)
+ utf8::unchecked::next(first);
+ return dist;
+ }
+
+ template <typename u16bit_iterator, typename octet_iterator>
+ octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
+ {
+ while (start != end) {
+ uint32_t cp = utf8::internal::mask16(*start++);
+ // Take care of surrogate pairs first
+ if (utf8::internal::is_lead_surrogate(cp)) {
+ uint32_t trail_surrogate = utf8::internal::mask16(*start++);
+ cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
+ }
+ result = utf8::unchecked::append(cp, result);
+ }
+ return result;
+ }
+
+ template <typename u16bit_iterator, typename octet_iterator>
+ u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
+ {
+ while (start < end) {
+ uint32_t cp = utf8::unchecked::next(start);
+ if (cp > 0xffff) { //make a surrogate pair
+ *result++ = static_cast<uint16_t>((cp >> 10) + internal::LEAD_OFFSET);
+ *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
+ }
+ else
+ *result++ = static_cast<uint16_t>(cp);
+ }
+ return result;
+ }
+
+ template <typename octet_iterator, typename u32bit_iterator>
+ octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
+ {
+ while (start != end)
+ result = utf8::unchecked::append(*(start++), result);
+
+ return result;
+ }
+
+ template <typename octet_iterator, typename u32bit_iterator>
+ u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
+ {
+ while (start < end)
+ (*result++) = utf8::unchecked::next(start);
+
+ return result;
+ }
+
+ // The iterator class
+ template <typename octet_iterator>
+ class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
+ octet_iterator it;
+ public:
+ iterator () {};
+ explicit iterator (const octet_iterator& octet_it): it(octet_it) {}
+ // the default "big three" are OK
+ octet_iterator base () const { return it; }
+ uint32_t operator * () const
+ {
+ octet_iterator temp = it;
+ return utf8::unchecked::next(temp);
+ }
+ bool operator == (const iterator& rhs) const
+ {
+ return (it == rhs.it);
+ }
+ bool operator != (const iterator& rhs) const
+ {
+ return !(operator == (rhs));
+ }
+ iterator& operator ++ ()
+ {
+ ::std::advance(it, utf8::internal::sequence_length(it));
+ return *this;
+ }
+ iterator operator ++ (int)
+ {
+ iterator temp = *this;
+ ::std::advance(it, utf8::internal::sequence_length(it));
+ return temp;
+ }
+ iterator& operator -- ()
+ {
+ utf8::unchecked::prior(it);
+ return *this;
+ }
+ iterator operator -- (int)
+ {
+ iterator temp = *this;
+ utf8::unchecked::prior(it);
+ return temp;
+ }
+ }; // class iterator
+
+ } // namespace utf8::unchecked
+} // namespace utf8
+
+
+#endif // header guard
+