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/*
* Copyright (C) 2013 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "cxxtools/utf8codec.h"
#include "cxxtools/utf8.h"
#include "cxxtools/textstream.h"
#include "cxxtools/unit/testsuite.h"
#include "cxxtools/unit/registertest.h"
#include "cxxtools/string.h"
#include <sstream>
#include <iomanip>
#define SIZEOF(a) (sizeof(a) / sizeof(a[0]))
class Utf8Test : public cxxtools::unit::TestSuite
{
public:
Utf8Test()
: cxxtools::unit::TestSuite("utf8")
{
registerMethod("encode", *this, &Utf8Test::encodeTest);
registerMethod("decode", *this, &Utf8Test::decodeTest);
registerMethod("byteordermark", *this, &Utf8Test::byteordermarkTest);
registerMethod("incompleteBom", *this, &Utf8Test::incompleteBomTest);
registerMethod("partialBom", *this, &Utf8Test::partialBomTest);
registerMethod("consumeInput", *this, &Utf8Test::consumeInput);
registerMethod("fillOutput", *this, &Utf8Test::fillOutput);
registerMethod("partialDecode", *this, &Utf8Test::partialDecode);
registerMethod("istream", *this, &Utf8Test::istream);
registerMethod("ostream", *this, &Utf8Test::ostream);
}
void encodeTest()
{
cxxtools::String ustr(L"Hi \xe4 there");
std::string bstr = cxxtools::Utf8Codec::encode(ustr);
CXXTOOLS_UNIT_ASSERT_EQUALS(bstr, "Hi \xc3\xa4 there");
std::string bstr2 = cxxtools::Utf8(ustr);
CXXTOOLS_UNIT_ASSERT_EQUALS(bstr2, "Hi \xc3\xa4 there");
}
void decodeTest()
{
std::string bstr("Hi \xc3\xa4 there");
cxxtools::String ustr = cxxtools::Utf8Codec::decode(bstr);
CXXTOOLS_UNIT_ASSERT(ustr == L"Hi \xe4 there");
}
void byteordermarkTest()
{
std::string bstr("\xef\xbb\xbfHi \xc3\xa4 there");
cxxtools::String ustr = cxxtools::Utf8Codec::decode(bstr);
CXXTOOLS_UNIT_ASSERT(ustr == L"Hi \xe4 there");
}
void incompleteBomTest()
{
std::string bstr("\xef\xbb");
cxxtools::String ustr = cxxtools::Utf8Codec::decode(bstr);
CXXTOOLS_UNIT_ASSERT(ustr.empty());
}
void partialBomTest()
{
// check whether codec is able to partially consume byte order mark
cxxtools::Utf8Codec codec;
const char data[] = { '\xef', '\xbb', '\xbf', 'A' };
cxxtools::Char to[10];
const char* fromBegin = data;
const char* fromNext = data;
cxxtools::Char* toNext = to;
cxxtools::MBState mbstate;
// consume first char
codec.in(mbstate, fromBegin, fromBegin + 1, fromNext, to, to + 10, toNext);
CXXTOOLS_UNIT_ASSERT(fromNext > fromBegin); // codec must consume char
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - to, 0); // no output yet
fromBegin = fromNext;
codec.in(mbstate, fromBegin, fromBegin + 1, fromNext, to, to + 10, toNext);
CXXTOOLS_UNIT_ASSERT(fromNext > fromBegin); // codec must consume another char
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - to, 0); // no output yet
fromBegin = fromNext;
codec.in(mbstate, fromBegin, fromBegin + 2, fromNext, to, to + 10, toNext);
CXXTOOLS_UNIT_ASSERT(fromNext > fromBegin); // codec must consume the third and forth char
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - to, 1); // now output
CXXTOOLS_UNIT_ASSERT_EQUALS(to[0].narrow(), 'A'); // now output
}
void consumeInput()
{
const char utf8Input[] = "Hello \xc3\xa4\xe2\x80\x93 end";
cxxtools::Char unicodeOutput[32];
cxxtools::Utf8Codec codec;
cxxtools::MBState mbstate;
const char* fromBegin = utf8Input;
const char* fromNext = utf8Input;
const char* fromEnd = utf8Input + sizeof(utf8Input) - 1;
cxxtools::Char* toNext = unicodeOutput;
cxxtools::Char* toEnd = unicodeOutput + SIZEOF(unicodeOutput);
codec.in(mbstate, fromBegin, fromEnd, fromNext, unicodeOutput, toEnd, toNext);
// is input completely consumed
CXXTOOLS_UNIT_ASSERT_EQUALS(fromNext, fromBegin + sizeof(utf8Input) - 1);
// is output completely converted
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - unicodeOutput, 12);
// check some values
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[4].value(), 0x6f);
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[6].value(), 0xe4);
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[7].value(), 0x2013);
}
void fillOutput()
{
const char utf8Input[] = "Hello \xc3\xa4\xe2\x80\x93 end";
cxxtools::Char unicodeOutput[8];
cxxtools::Utf8Codec codec;
cxxtools::MBState mbstate;
const char* fromBegin = utf8Input;
const char* fromNext = utf8Input;
const char* fromEnd = utf8Input + sizeof(utf8Input) - 1;
cxxtools::Char* toNext = unicodeOutput;
cxxtools::Char* toEnd = unicodeOutput + SIZEOF(unicodeOutput);
codec.in(mbstate, fromBegin, fromEnd, fromNext, unicodeOutput, toEnd, toNext);
// is output filled
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - unicodeOutput, 8);
// check some values
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[4].value(), 0x6f);
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[6].value(), 0xe4);
// continue
fromBegin = fromNext;
toNext = unicodeOutput;
codec.in(mbstate, fromBegin, fromEnd, fromNext, unicodeOutput, unicodeOutput + SIZEOF(unicodeOutput), toNext);
// got the rest?
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - unicodeOutput, 4);
// input consumed?
CXXTOOLS_UNIT_ASSERT_EQUALS(fromNext, fromEnd);
}
void partialDecode()
{
const char utf8Input[] = "Hello \xc3\xa4\xe2\x80\x93 end";
cxxtools::Char unicodeOutput[32];
cxxtools::Utf8Codec codec;
cxxtools::MBState mbstate;
const char* fromBegin = utf8Input;
const char* fromNext = utf8Input;
const char* fromEnd = utf8Input + sizeof(utf8Input) - 1;
cxxtools::Char* toNext = unicodeOutput;
cxxtools::Char* toEnd = unicodeOutput + SIZEOF(unicodeOutput);
cxxtools::Utf8Codec::result result = codec.in(mbstate, fromBegin, fromBegin + 7, fromNext, unicodeOutput, toEnd, toNext);
CXXTOOLS_UNIT_ASSERT_EQUALS(result, std::codecvt_base::partial);
result = codec.in(mbstate, fromNext, fromEnd, fromNext, toNext, toEnd, toNext);
CXXTOOLS_UNIT_ASSERT_EQUALS(result, std::codecvt_base::ok);
CXXTOOLS_UNIT_ASSERT_EQUALS(fromNext, fromEnd);
CXXTOOLS_UNIT_ASSERT_EQUALS(toNext - unicodeOutput, 12);
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[4].value(), 0x6f);
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[6].value(), 0xe4);
CXXTOOLS_UNIT_ASSERT_EQUALS(unicodeOutput[7].value(), 0x2013);
}
void istream()
{
std::istringstream in("Hello \xc3\xa4\xe2\x80\x93 end");
cxxtools::TextIStream tin(in, new cxxtools::Utf8Codec());
cxxtools::String s;
std::getline(tin, s);
CXXTOOLS_UNIT_ASSERT_EQUALS(s.size(), 12);
CXXTOOLS_UNIT_ASSERT_EQUALS(s[4].value(), 0x6f);
CXXTOOLS_UNIT_ASSERT_EQUALS(s[6].value(), 0xe4);
CXXTOOLS_UNIT_ASSERT_EQUALS(s[7].value(), 0x2013);
}
void ostream()
{
std::ostringstream out;
cxxtools::TextOStream tout(out, new cxxtools::Utf8Codec());
tout << L"Hello \x00e4\x2013 end" << std::flush;
std::string s = out.str();
CXXTOOLS_UNIT_ASSERT_EQUALS(s.size(), 15);
CXXTOOLS_UNIT_ASSERT_EQUALS(s, "Hello \xc3\xa4\xe2\x80\x93 end");
}
};
cxxtools::unit::RegisterTest<Utf8Test> register_Utf8Test;
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