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#include <cstring>
#include <cassert>
#include <vector>
#include "../../source/utf8.h"
using namespace utf8;
using namespace std;
int main()
{
//append
unsigned char u[5] = {0,0,0,0,0};
append(0x0448, u);
assert (u[0] == 0xd1 && u[1] == 0x88 && u[2] == 0 && u[3] == 0 && u[4] == 0);
append(0x65e5, u);
assert (u[0] == 0xe6 && u[1] == 0x97 && u[2] == 0xa5 && u[3] == 0 && u[4] == 0);
append(0x3044, u);
assert (u[0] == 0xe3 && u[1] == 0x81 && u[2] == 0x84 && u[3] == 0 && u[4] == 0);
append(0x10346, u);
assert (u[0] == 0xf0 && u[1] == 0x90 && u[2] == 0x8d && u[3] == 0x86 && u[4] == 0);
//next
const char* twochars = "\xe6\x97\xa5\xd1\x88";
const char* w = twochars;
int cp = next(w, twochars + 6);
assert (cp == 0x65e5);
assert (w == twochars + 3);
const char* threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
w = threechars;
cp = next(w, threechars + 9);
assert (cp == 0x10346);
assert (w == threechars + 4);
cp = next(w, threechars + 9);
assert (cp == 0x65e5);
assert (w == threechars + 7);
cp = next(w, threechars + 9);
assert (cp == 0x0448);
assert (w == threechars + 9);
//peek_next
const char* const cw = twochars;
cp = peek_next(cw, cw + 6);
assert (cp == 0x65e5);
assert (cw == twochars);
//prior
w = twochars + 3;
cp = prior (w, twochars);
assert (cp == 0x65e5);
assert (w == twochars);
w = threechars + 9;
cp = prior(w, threechars);
assert (cp == 0x0448);
assert (w == threechars + 7);
cp = prior(w, threechars);
assert (cp == 0x65e5);
assert (w == threechars + 4);
cp = prior(w, threechars);
assert (cp == 0x10346);
assert (w == threechars);
//previous (deprecated)
w = twochars + 3;
cp = previous (w, twochars - 1);
assert (cp == 0x65e5);
assert (w == twochars);
w = threechars + 9;
cp = previous(w, threechars - 1);
assert (cp == 0x0448);
assert (w == threechars + 7);
cp = previous(w, threechars -1);
assert (cp == 0x65e5);
assert (w == threechars + 4);
cp = previous(w, threechars - 1);
assert (cp == 0x10346);
assert (w == threechars);
// advance
w = twochars;
advance (w, 2, twochars + 6);
assert (w == twochars + 5);
// distance
size_t dist = utf8::distance(twochars, twochars + 5);
assert (dist == 2);
// utf32to8
int utf32string[] = {0x448, 0x65E5, 0x10346, 0};
vector<char> utf8result;
utf32to8(utf32string, utf32string + 3, back_inserter(utf8result));
assert (utf8result.size() == 9);
// try it with the return value;
char* utf8_end = utf32to8(utf32string, utf32string + 3, &utf8result[0]);
assert (utf8_end == &utf8result[0] + 9);
//utf8to32
vector<int> utf32result;
utf8to32(twochars, twochars + 5, back_inserter(utf32result));
assert (utf32result.size() == 2);
// try it with the return value;
int* utf32_end = utf8to32(twochars, twochars + 5, &utf32result[0]);
assert (utf32_end == &utf32result[0] + 2);
//utf16to8
unsigned short utf16string[] = {0x41, 0x0448, 0x65e5, 0xd834, 0xdd1e};
utf8result.clear();
utf16to8(utf16string, utf16string + 5, back_inserter(utf8result));
assert (utf8result.size() == 10);
// try it with the return value;
utf8_end = utf16to8 (utf16string, utf16string + 5, &utf8result[0]);
assert (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));
assert (utf16result.size() == 4);
assert (utf16result[2] == 0xd834);
assert (utf16result[3] == 0xdd1e);
// try it with the return value;
unsigned short* utf16_end = utf8to16 (utf8_with_surrogates, utf8_with_surrogates + 9, &utf16result[0]);
assert (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);
assert (invalid == utf_invalid + 5);
//is_valid
bool bvalid = is_valid(utf_invalid, utf_invalid + 6);
assert (bvalid == false);
bvalid = is_valid(utf8_with_surrogates, utf8_with_surrogates + 9);
assert (bvalid == true);
//starts_with_bom
unsigned char byte_order_mark[] = {0xef, 0xbb, 0xbf};
bool bbom = starts_with_bom(byte_order_mark, byte_order_mark + sizeof(byte_order_mark));
assert (bbom == true);
bool no_bbom = starts_with_bom(threechars, threechars + sizeof(threechars));
assert (no_bbom == false);
//is_bom
bool unsafe_bbom = is_bom(byte_order_mark);
assert (unsafe_bbom == true);
//replace_invalid
char invalid_sequence[] = "a\x80\xe0\xa0\xc0\xaf\xed\xa0\x80z";
vector<char> replace_invalid_result;
replace_invalid (invalid_sequence, invalid_sequence + sizeof(invalid_sequence), std::back_inserter(replace_invalid_result), '?');
bvalid = is_valid(replace_invalid_result.begin(), replace_invalid_result.end());
assert (bvalid);
const char fixed_invalid_sequence[] = "a????z";
assert (sizeof(fixed_invalid_sequence) == replace_invalid_result.size());
assert (std::equal(replace_invalid_result.begin(), replace_invalid_result.begin() + sizeof(fixed_invalid_sequence), fixed_invalid_sequence));
// iterator
utf8::iterator<const char*> it(threechars, threechars, threechars + 9);
utf8::iterator<const char*> it2 = it;
assert (it2 == it);
assert (*it == 0x10346);
assert (*(++it) == 0x65e5);
assert ((*it++) == 0x65e5);
assert (*it == 0x0448);
assert (it != it2);
utf8::iterator<const char*> endit (threechars + 9, threechars, threechars + 9);
assert (++it == endit);
assert (*(--it) == 0x0448);
assert ((*it--) == 0x0448);
assert (*it == 0x65e5);
assert (--it == utf8::iterator<const char*>(threechars, threechars, threechars + 9));
assert (*it == 0x10346);
//////////////////////////////////////////////////////////
//// Unchecked variants
//////////////////////////////////////////////////////////
//append
memset(u, 0, 5);
append(0x0448, u);
assert (u[0] == 0xd1 && u[1] == 0x88 && u[2] == 0 && u[3] == 0 && u[4] == 0);
append(0x65e5, u);
assert (u[0] == 0xe6 && u[1] == 0x97 && u[2] == 0xa5 && u[3] == 0 && u[4] == 0);
append(0x10346, u);
assert (u[0] == 0xf0 && u[1] == 0x90 && u[2] == 0x8d && u[3] == 0x86 && u[4] == 0);
//next
w = twochars;
cp = unchecked::next(w);
assert (cp == 0x65e5);
assert (w == twochars + 3);
w = threechars;
cp = unchecked::next(w);
assert (cp == 0x10346);
assert (w == threechars + 4);
cp = unchecked::next(w);
assert (cp == 0x65e5);
assert (w == threechars + 7);
cp = unchecked::next(w);
assert (cp == 0x0448);
assert (w == threechars + 9);
//peek_next
cp = unchecked::peek_next(cw);
assert (cp == 0x65e5);
assert (cw == twochars);
//previous (calls prior internally)
w = twochars + 3;
cp = unchecked::previous (w);
assert (cp == 0x65e5);
assert (w == twochars);
w = threechars + 9;
cp = unchecked::previous(w);
assert (cp == 0x0448);
assert (w == threechars + 7);
cp = unchecked::previous(w);
assert (cp == 0x65e5);
assert (w == threechars + 4);
cp = unchecked::previous(w);
assert (cp == 0x10346);
assert (w == threechars);
// advance
w = twochars;
unchecked::advance (w, 2);
assert (w == twochars + 5);
// distance
dist = unchecked::distance(twochars, twochars + 5);
assert (dist == 2);
// utf32to8
utf8result.clear();
unchecked::utf32to8(utf32string, utf32string + 3, back_inserter(utf8result));
assert (utf8result.size() == 9);
// try it with the return value;
utf8_end = utf32to8(utf32string, utf32string + 3, &utf8result[0]);
assert(utf8_end == &utf8result[0] + 9);
//utf8to32
utf32result.clear();
unchecked::utf8to32(twochars, twochars + 5, back_inserter(utf32result));
assert (utf32result.size() == 2);
// try it with the return value;
utf32_end = utf8to32(twochars, twochars + 5, &utf32result[0]);
assert (utf32_end == &utf32result[0] + 2);
//utf16to8
utf8result.clear();
unchecked::utf16to8(utf16string, utf16string + 5, back_inserter(utf8result));
assert (utf8result.size() == 10);
// try it with the return value;
utf8_end = utf16to8 (utf16string, utf16string + 5, &utf8result[0]);
assert (utf8_end == &utf8result[0] + 10);
//utf8to16
utf16result.clear();
unchecked::utf8to16(utf8_with_surrogates, utf8_with_surrogates + 9, back_inserter(utf16result));
assert (utf16result.size() == 4);
assert (utf16result[2] == 0xd834);
assert (utf16result[3] == 0xdd1e);
// try it with the return value;
utf16_end = utf8to16 (utf8_with_surrogates, utf8_with_surrogates + 9, &utf16result[0]);
assert (utf16_end == &utf16result[0] + 4);
// iterator
utf8::unchecked::iterator<const char*> un_it(threechars);
utf8::unchecked::iterator<const char*> un_it2 = un_it;
assert (un_it2 == un_it);
assert (*un_it == 0x10346);
assert (*(++un_it) == 0x65e5);
assert ((*un_it++) == 0x65e5);
assert (un_it != un_it2);
assert (*un_it == 0x0448);
utf8::unchecked::iterator<const char*> un_endit (threechars + 9);
assert (++un_it == un_endit);
assert (*(--un_it) == 0x0448);
assert ((*un_it--) == 0x0448);
assert (*un_it == 0x65e5);
assert (--un_it == utf8::unchecked::iterator<const char*>(threechars));
assert (*un_it == 0x10346);
}
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