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Author SHA1 Message Date
ntrifunovic
8dddf7e554 Version 2.1 branch 
git-svn-id: http://svn.code.sf.net/p/utfcpp/code@80 a809a056-fc17-0410-9590-b4f493f8b08e
 2014-06-01 01:50:04 +02:00
5 changed files with 5 additions and 1869 deletions
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530
boost/boost/utf8.hpp
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// utf8.hpp header file
/*
Copyright 2006 Nemanja Trifunovic
Distributed under the Boost Software License, Version 1.0. (See
accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef UTF8_FOR_CPP_2675DCD0_9480_4c0c_B92A_CC14C027B731
#define UTF8_FOR_CPP_2675DCD0_9480_4c0c_B92A_CC14C027B731
#include <exception>
#include <boost/config.hpp>
namespace boost {
namespace utf8 {
// Exceptions that may be thrown from the library functions.
class invalid_code_point : public std::exception {
uint32_t cp;
public:
invalid_code_point(uint32_t cp) : cp(cp) {}
virtual const char* what() const throw() { return "Invalid code point"; }
uint32_t code_point() const {return cp;}
};
class invalid_utf8 : public std::exception {
uint8_t u8;
public:
invalid_utf8 (uint8_t u) : u8(u) {}
virtual const char* what() const throw() { return "Invalid UTF-8"; }
uint8_t utf8_octet() const {return u8;}
};
class invalid_utf16 : public std::exception {
uint16_t u16;
public:
invalid_utf16 (uint16_t u) : u16(u) {}
virtual const char* what() const throw() { return "Invalid UTF-16"; }
uint16_t utf16_word() const {return u16;}
};
class not_enough_room : public std::exception {
public:
virtual const char* what() const throw() { return "Not enough space"; }
};
// Helper code - not intended to be directly called by the library users. May be changed at any time
namespace internal
{
// Unicode constants
// Leading (high) surrogates: 0xd800 - 0xdbff
// Trailing (low) surrogates: 0xdc00 - 0xdfff
const uint16_t LEAD_SURROGATE_MIN = 0xd800u;
const uint16_t LEAD_SURROGATE_MAX = 0xdbffu;
const uint16_t TRAIL_SURROGATE_MIN = 0xdc00u;
const uint16_t TRAIL_SURROGATE_MAX = 0xdfffu;
const uint16_t LEAD_OFFSET = LEAD_SURROGATE_MIN - (0x10000 >> 10);
const uint32_t SURROGATE_OFFSET = 0x10000u - (LEAD_SURROGATE_MIN << 10) - TRAIL_SURROGATE_MIN;
// Maximum valid value for a Unicode code point
const uint32_t CODE_POINT_MAX = 0x0010ffffu;
template<typename octet_type>
inline uint8_t mask8(octet_type oc)
{
return static_cast<uint8_t>(0xff & oc);
}
template<typename u16_type>
inline uint16_t mask16(u16_type oc)
{
return static_cast<uint16_t>(0xffff & oc);
}
template<typename octet_type>
inline bool is_trail(octet_type oc)
{
return ((mask8(oc) >> 6) == 0x2);
}
template <typename u16>
inline bool is_surrogate(u16 cp)
{
return (cp >= LEAD_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
}
template <typename u32>
inline bool is_code_point_valid(u32 cp)
{
return (cp <= CODE_POINT_MAX && !is_surrogate(cp) && cp != 0xfffe && cp != 0xffff);
}
template <typename octet_iterator>
inline typename std::iterator_traits<octet_iterator>::difference_type
sequence_length(octet_iterator lead_it)
{
uint8_t lead = mask8(*lead_it);
if (lead < 0x80)
return 1;
else if ((lead >> 5) == 0x6)
return 2;
else if ((lead >> 4) == 0xe)
return 3;
else if ((lead >> 3) == 0x1e)
return 4;
else
return 0;
}
enum utf_error {OK, NOT_ENOUGH_ROOM, INVALID_LEAD, INCOMPLETE_SEQUENCE, OVERLONG_SEQUENCE, INVALID_CODE_POINT};
template <typename octet_iterator>
utf_error validate_next(octet_iterator& it, octet_iterator end, uint32_t* code_point = 0)
{
uint32_t cp = mask8(*it);
// Check the lead octet
typedef typename std::iterator_traits<octet_iterator>::difference_type octet_difference_type;
octet_difference_type length = sequence_length(it);
// "Shortcut" for ASCII characters
if (length == 1) {
if (end - it > 0) {
if (code_point)
*code_point = cp;
++it;
return OK;
}
else
return NOT_ENOUGH_ROOM;
}
// Do we have enough memory?
if (end - it < length)
return NOT_ENOUGH_ROOM;
// Check trail octets and calculate the code point
switch (length) {
case 0:
return INVALID_LEAD;
break;
case 2:
if (is_trail(*(++it))) {
cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f);
}
else {
--it;
return INCOMPLETE_SEQUENCE;
}
break;
case 3:
if (is_trail(*(++it))) {
cp = ((cp << 12) & 0xffff) + ((mask8(*it) << 6) & 0xfff);
if (is_trail(*(++it))) {
cp += (*it) & 0x3f;
}
else {
--it; --it;
return INCOMPLETE_SEQUENCE;
}
}
else {
--it;
return INCOMPLETE_SEQUENCE;
}
break;
case 4:
if (is_trail(*(++it))) {
cp = ((cp << 18) & 0x1fffff) + ((mask8(*it) << 12) & 0x3ffff);
if (is_trail(*(++it))) {
cp += (mask8(*it) << 6) & 0xfff;
if (is_trail(*(++it))) {
cp += (*it) & 0x3f;
}
else {
--it; --it; --it;
return INCOMPLETE_SEQUENCE;
}
}
else {
--it; --it;
return INCOMPLETE_SEQUENCE;
}
}
else {
--it;
return INCOMPLETE_SEQUENCE;
}
break;
}
// Is the code point valid?
if (!is_code_point_valid(cp)) {
for (octet_difference_type i = 0; i < length - 1; ++i)
--it;
return INVALID_CODE_POINT;
}
if (code_point)
*code_point = cp;
if (cp < 0x80) {
if (length != 1) {
for (octet_difference_type i = 0; i < length - 1; ++i)
--it;
return OVERLONG_SEQUENCE;
}
}
else if (cp < 0x800) {
if (length != 2) {
for (octet_difference_type i = 0; i < length - 1; ++i)
--it;
return OVERLONG_SEQUENCE;
}
}
else if (cp < 0x10000) {
if (length != 3) {
for (octet_difference_type i = 0; i < length - 1; ++i)
--it;
return OVERLONG_SEQUENCE;
}
}
++it;
return OK;
}
} // namespace internal
/// The library API - functions intended to be called by the users
// Byte order mark
const uint8_t bom[] = {0xef, 0xbb, 0xbf};
template <typename octet_iterator>
octet_iterator find_invalid(octet_iterator start, octet_iterator end)
{
octet_iterator result = start;
while (result != end) {
internal::utf_error err_code = internal::validate_next(result, end);
if (err_code != internal::OK)
return result;
}
return result;
}
template <typename octet_iterator>
bool is_valid(octet_iterator start, octet_iterator end)
{
return (find_invalid(start, end) == end);
}
template <typename octet_iterator>
bool is_bom (octet_iterator it)
{
return (
(internal::mask8(*it++)) == bom[0] &&
(internal::mask8(*it++)) == bom[1] &&
(internal::mask8(*it)) == bom[2]
);
}
template <typename octet_iterator>
octet_iterator append(uint32_t cp, octet_iterator result)
{
if (!internal::is_code_point_valid(cp))
throw invalid_code_point(cp);
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 if (cp <= internal::CODE_POINT_MAX) { // 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);
}
else
throw invalid_code_point(cp);
return result;
}
template <typename octet_iterator>
uint32_t next(octet_iterator& it, octet_iterator end)
{
uint32_t cp = 0;
internal::utf_error err_code = internal::validate_next(it, end, &cp);
switch (err_code) {
case internal::OK :
break;
case internal::NOT_ENOUGH_ROOM :
throw not_enough_room();
case internal::INVALID_LEAD :
case internal::INCOMPLETE_SEQUENCE :
case internal::OVERLONG_SEQUENCE :
throw invalid_utf8(*it);
case internal::INVALID_CODE_POINT :
throw invalid_code_point(cp);
}
return cp;
}
template <typename octet_iterator>
uint32_t prior(octet_iterator& it, octet_iterator start)
{
octet_iterator end = it;
while (internal::is_trail(*(--it)))
if (it < start)
throw invalid_utf8(*it); // error - no lead byte in the sequence
octet_iterator temp = it;
return next(temp, end);
}
template <typename octet_iterator, typename distance_type>
void advance (octet_iterator& it, distance_type n, octet_iterator end)
{
for (distance_type i = 0; i < n; ++i)
next(it, end);
}
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)
next(first, last);
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 = internal::mask16(*start++);
// Take care of surrogate pairs first
if (internal::is_surrogate(cp)) {
if (start != end) {
uint32_t trail_surrogate = internal::mask16(*start++);
if (trail_surrogate >= internal::TRAIL_SURROGATE_MIN && trail_surrogate <= internal::TRAIL_SURROGATE_MAX)
cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
else
throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
}
else
throw invalid_utf16(static_cast<uint16_t>(*start));
}
result = 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 = next(start, end);
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 = 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++) = next(start, end);
return result;
}
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 = 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) + ((internal::mask8(*it) << 6) & 0xfff);
++it;
cp += (*it) & 0x3f;
break;
case 4:
++it;
cp = ((cp << 18) & 0x1fffff) + ((internal::mask8(*it) << 12) & 0x3ffff);
++it;
cp += (internal::mask8(*it) << 6) & 0xfff;
++it;
cp += (*it) & 0x3f;
break;
}
++it;
return cp;
}
template <typename octet_iterator>
uint32_t prior(octet_iterator& it)
{
while (internal::is_trail(*(--it))) ;
octet_iterator temp = it;
return next(temp);
}
template <typename octet_iterator, typename distance_type>
void advance (octet_iterator& it, distance_type n)
{
for (distance_type i = 0; i < n; ++i)
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)
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 = internal::mask16(*start++);
// Take care of surrogate pairs first
if (internal::is_surrogate(cp)) {
uint32_t trail_surrogate = internal::mask16(*start++);
cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
}
result = 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 = 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 = 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++) = next(start);
return result;
}
} // namespace utf8::unchecked
} // namespace utf8
} // namespace boost
#endif // header guard

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boost/libs/utf8/Jamfile
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# Boost UTF8 Library test Jamfile
# Copyright Nemanja Trifunovic 2006
# Use, modification, and distribution is subject to the Boost Software
# License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
# bring in rules for testing
import testing ;
{
test-suite "utf8"
: [ run test.cpp ]
;
}

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boost/libs/utf8/index.html
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boost/libs/utf8/test.cpp
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#include <vector>
#include <iterator>
#include "boost/utf8.hpp"
#include <boost/detail/lightweight_test.hpp>
using namespace boost::utf8;
using namespace std;
int main()
{
//append
unsigned char u[5] = {0,0,0,0,0};
unsigned char* end = append(0x0448, u);
BOOST_TEST (u[0] == 0xd1 && u[1] == 0x88 && u[2] == 0 && u[3] == 0 && u[4] == 0);
end = append(0x65e5, u);
BOOST_TEST (u[0] == 0xe6 && u[1] == 0x97 && u[2] == 0xa5 && u[3] == 0 && u[4] == 0);
end = append(0x3044, u);
BOOST_TEST (u[0] == 0xe3 && u[1] == 0x81 && u[2] == 0x84 && u[3] == 0 && u[4] == 0);
end = append(0x10346, u);
BOOST_TEST (u[0] == 0xf0 && u[1] == 0x90 && u[2] == 0x8d && u[3] == 0x86 && u[4] == 0);
//next
char* twochars = "\xe6\x97\xa5\xd1\x88";
char* w = twochars;
int cp = next(w, twochars + 6);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == twochars + 3);
char* threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
w = threechars;
cp = next(w, threechars + 9);
BOOST_TEST (cp == 0x10346);
BOOST_TEST (w == threechars + 4);
cp = next(w, threechars + 9);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == threechars + 7);
cp = next(w, threechars + 9);
BOOST_TEST (cp == 0x0448);
BOOST_TEST (w == threechars + 9);
//prior
w = twochars + 3;
cp = prior (w, twochars - 1);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == twochars);
w = threechars + 9;
cp = prior(w, threechars - 1);
BOOST_TEST (cp == 0x0448);
BOOST_TEST (w == threechars + 7);
cp = prior(w, threechars -1);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == threechars + 4);
cp = prior(w, threechars - 1);
BOOST_TEST (cp == 0x10346);
BOOST_TEST (w == threechars);
// advance
w = twochars;
advance (w, 2, twochars + 6);
BOOST_TEST (w == twochars + 5);
// distance
size_t dist = boost::utf8::distance(twochars, twochars + 5);
BOOST_TEST (dist == 2);
// utf32to8
int utf32string[] = {0x448, 0x65E5, 0x10346, 0};
vector<char> utf8result;
utf32to8(utf32string, utf32string + 3, back_inserter(utf8result));
BOOST_TEST (utf8result.size() == 9);
// try it with the return value;
char* utf8_end = utf32to8(utf32string, utf32string + 3, &utf8result[0]);
BOOST_TEST (utf8_end == &utf8result[0] + 9);
//utf8to32
vector<int> utf32result;
utf8to32(twochars, twochars + 5, back_inserter(utf32result));
BOOST_TEST (utf32result.size() == 2);
// try it with the return value;
int* utf32_end = utf8to32(twochars, twochars + 5, &utf32result[0]);
BOOST_TEST (utf32_end == &utf32result[0] + 2);
//utf16to8
unsigned short utf16string[] = {0x41, 0x0448, 0x65e5, 0xd834, 0xdd1e};
utf8result.clear();
utf16to8(utf16string, utf16string + 5, back_inserter(utf8result));
BOOST_TEST (utf8result.size() == 10);
// try it with the return value;
utf8_end = utf16to8 (utf16string, utf16string + 5, &utf8result[0]);
BOOST_TEST (utf8_end == &utf8result[0] + 10);
//utf8to16
char utf8_with_surrogates[] = "\xe6\x97\xa5\xd1\x88\xf0\x9d\x84\x9e";
vector <unsigned short> utf16result;
utf8to16(utf8_with_surrogates, utf8_with_surrogates + 9, back_inserter(utf16result));
BOOST_TEST (utf16result.size() == 4);
BOOST_TEST (utf16result[2] == 0xd834);
BOOST_TEST (utf16result[3] == 0xdd1e);
// try it with the return value;
unsigned short* utf16_end = utf8to16 (utf8_with_surrogates, utf8_with_surrogates + 9, &utf16result[0]);
BOOST_TEST (utf16_end == &utf16result[0] + 4);
//find_invalid
char utf_invalid[] = "\xe6\x97\xa5\xd1\x88\xfa";
char* invalid = find_invalid(utf_invalid, utf_invalid + 6);
BOOST_TEST (invalid == utf_invalid + 5);
//is_valid
bool bvalid = is_valid(utf_invalid, utf_invalid + 6);
BOOST_TEST (bvalid == false);
bvalid = is_valid(utf8_with_surrogates, utf8_with_surrogates + 9);
BOOST_TEST (bvalid == true);
//is_bom
unsigned char byte_order_mark[] = {0xef, 0xbb, 0xbf};
bool bbom = is_bom(byte_order_mark);
BOOST_TEST (bbom == true);
//////////////////////////////////////////////////////////
//// Unchecked variants
//////////////////////////////////////////////////////////
//append
memset(u, 0, 5);
end = unchecked::append(0x0448, u);
BOOST_TEST (u[0] == 0xd1 && u[1] == 0x88 && u[2] == 0 && u[3] == 0 && u[4] == 0);
end = unchecked::append(0x65e5, u);
BOOST_TEST (u[0] == 0xe6 && u[1] == 0x97 && u[2] == 0xa5 && u[3] == 0 && u[4] == 0);
end = unchecked::append(0x10346, u);
BOOST_TEST (u[0] == 0xf0 && u[1] == 0x90 && u[2] == 0x8d && u[3] == 0x86 && u[4] == 0);
//next
w = twochars;
cp = unchecked::next(w);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == twochars + 3);
w = threechars;
cp = unchecked::next(w);
BOOST_TEST (cp == 0x10346);
BOOST_TEST (w == threechars + 4);
cp = unchecked::next(w);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == threechars + 7);
cp = unchecked::next(w);
BOOST_TEST (cp == 0x0448);
BOOST_TEST (w == threechars + 9);
//prior
w = twochars + 3;
cp = unchecked::prior (w);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == twochars);
w = threechars + 9;
cp = unchecked::prior(w);
BOOST_TEST (cp == 0x0448);
BOOST_TEST (w == threechars + 7);
cp = unchecked::prior(w);
BOOST_TEST (cp == 0x65e5);
BOOST_TEST (w == threechars + 4);
cp = unchecked::prior(w);
BOOST_TEST (cp == 0x10346);
BOOST_TEST (w == threechars);
// advance
w = twochars;
unchecked::advance (w, 2);
BOOST_TEST (w == twochars + 5);
// distance
dist = unchecked::distance(twochars, twochars + 5);
BOOST_TEST (dist == 2);
// utf32to8
utf8result.clear();
unchecked::utf32to8(utf32string, utf32string + 3, back_inserter(utf8result));
BOOST_TEST (utf8result.size() == 9);
// try it with the return value;
utf8_end = utf32to8(utf32string, utf32string + 3, &utf8result[0]);
BOOST_TEST(utf8_end == &utf8result[0] + 9);
//utf8to32
utf32result.clear();
unchecked::utf8to32(twochars, twochars + 5, back_inserter(utf32result));
BOOST_TEST (utf32result.size() == 2);
// try it with the return value;
utf32_end = utf8to32(twochars, twochars + 5, &utf32result[0]);
BOOST_TEST (utf32_end == &utf32result[0] + 2);
//utf16to8
utf8result.clear();
unchecked::utf16to8(utf16string, utf16string + 5, back_inserter(utf8result));
BOOST_TEST (utf8result.size() == 10);
// try it with the return value;
utf8_end = utf16to8 (utf16string, utf16string + 5, &utf8result[0]);
BOOST_TEST (utf8_end == &utf8result[0] + 10);
//utf8to16
utf16result.clear();
unchecked::utf8to16(utf8_with_surrogates, utf8_with_surrogates + 9, back_inserter(utf16result));
BOOST_TEST (utf16result.size() == 4);
BOOST_TEST (utf16result[2] == 0xd834);
BOOST_TEST (utf16result[3] == 0xdd1e);
// try it with the return value;
utf16_end = utf8to16 (utf8_with_surrogates, utf8_with_surrogates + 9, &utf16result[0]);
BOOST_TEST (utf16_end == &utf16result[0] + 4);
return boost::report_errors();
}

5
samples/Makefile Normal file
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@ -0,0 +1,5 @@
CC = g++
CFLAGS = -g -Wall -pedantic
docsample: docsample.cpp ../source/utf8.h
$(CC) $(CFLAGS) docsample.cpp -odocsample