C++ Ucs2String::push_back方法代码示例

std::string DocBookReader::parseLink(ZLUnicodeUtil::Ucs2String s, bool urlencode) {
	//TODO add support for HYPERLINK like that:
	// [0x13] HYPERLINK "http://site.ru/some text" \t "_blank" [0x14] text [0x15]
	//Current implementation search for last QUOTE, so, it reads \t and _blank as part of link
	//Last quote searching is need to handle link like that:
	// [0x13] HYPERLINK "http://yandex.ru/yandsearch?text='some text' и "some text2"" [0x14] link text [0x15]

	static const ZLUnicodeUtil::Ucs2Char QUOTE = 0x22;
	size_t i, first = 0;
	//TODO maybe functions findFirstOf and findLastOf should be in ZLUnicodeUtil class
	for (i = 0; i < s.size(); ++i) {
		if (s.at(i) == QUOTE) {
			first = i;
			break;
		}
	}
	if (i == s.size()) {
		return std::string();
	}
	size_t j, last = 0;
	for (j = s.size(); j > 0 ; --j) {
		if (s.at(j - 1) == QUOTE) {
			last = j - 1;
			break;
		}
	}
	if (j == 0 || last == first) {
		return std::string();
	}

	ZLUnicodeUtil::Ucs2String link;
	for (size_t k = first + 1; k < last; ++k) {
		ZLUnicodeUtil::Ucs2Char ch = s.at(k);
		if (urlencode && ZLUnicodeUtil::isSpace(ch)) {
			//TODO maybe implement function for encoding all signs in url, not only spaces and quotes
			//TODO maybe add backslash support
			link.push_back('%');
			link.push_back('2');
			link.push_back('0');
		} else if (urlencode && ch == QUOTE) {
			link.push_back('%');
			link.push_back('2');
			link.push_back('2');
		} else {
			link.push_back(ch);
		}
	}
	std::string utf8String;
	ZLUnicodeUtil::ucs2ToUtf8(utf8String, link);
	return utf8String;
}

void ZLWin32Utf16EncodingConverter::convert(std::string &dst, const char *srcStart, const char *srcEnd) {
	if (srcStart == srcEnd) {
		return;
	}

	const unsigned char *ptr = (const unsigned char*)srcStart;
	ZLUnicodeUtil::Ucs2Char ch;

	myBuffer.clear();

	if (myUseStoredCharacter) {
		if (myLittleEndian) {
			ch = *ptr;
			ch <<= 8;
			ch += myStoredCharacter;
		} else {
			ch = myStoredCharacter;
			ch <<= 8;
			ch += *ptr;
		}
		myBuffer.push_back(ch);
		++ptr;
	}

	const unsigned char *end = (const unsigned char*)srcEnd;
	if ((end - ptr) % 2 == 1) {
		myStoredCharacter = *end;
		myUseStoredCharacter = true;
		--end;
	} else {
		myUseStoredCharacter = false;
	}

	if (myLittleEndian) {
		for (; ptr < end; ptr += 2) {
			myBuffer.push_back((((ZLUnicodeUtil::Ucs2Char)*(ptr + 1)) << 8) + *ptr);
		}
	} else {
		for (; ptr < end; ptr += 2) {
			myBuffer.push_back((((ZLUnicodeUtil::Ucs2Char)*ptr) << 8) + *(ptr + 1));
		}
	}

	std::string toAppend;
	ZLUnicodeUtil::ucs2ToUtf8(toAppend, myBuffer);
	dst += toAppend;
	myBuffer.clear();
}

void ZLWin32PaintContext::setFont(const std::string &family, int size, bool bold, bool italic) {
	if (size < 4) {
		size = 4;
	}
	if (myDisplayContext == 0) {
		return;
	}
	// TODO: optimize
	LOGFONT logicalFont;
	memset(&logicalFont, 0, sizeof(LOGFONT));
	logicalFont.lfHeight = size;
	logicalFont.lfWeight = bold ? FW_BOLD : FW_REGULAR;
	logicalFont.lfItalic = italic;
	logicalFont.lfQuality = 5 /*CLEARTYPE_QUALITY*/;
	const int len = std::min((int)family.length(), LF_FACESIZE - 1);
	ZLUnicodeUtil::Ucs2String str;
	ZLUnicodeUtil::utf8ToUcs2(str, family.data(), len);
	str.push_back(0);
	memcpy(logicalFont.lfFaceName, ::wchar(str), 2 * str.size());
	HFONT font = CreateFontIndirect(&logicalFont);
	DeleteObject(SelectObject(myDisplayContext, font));

	GetTextMetrics(myDisplayContext, &myTextMetric);
	mySpaceWidth = -1;
}

void ZLWin32FSDir::collectFiles(std::vector<std::string> &names, bool /*includeSymlinks*/) {
	std::string pattern = path();
	if (pattern[pattern.length() - 1] != '\\') {
		pattern += '\\';
	}
	pattern += '*';
	ZLUnicodeUtil::Ucs2String wPattern;
	createNTWCHARString(wPattern, pattern);

	WIN32_FIND_DATAW findData;
	HANDLE handle = FindFirstFileW(::wchar(wPattern), &findData);
	ZLUnicodeUtil::Ucs2String wFileName;
	std::string fileName;
	if (handle != 0) {
		do {
			if (findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
				continue;
			}
			wFileName.clear();
			fileName.erase();
			for (int i = 0; i < MAX_PATH; ++i) {
				if (findData.cFileName[i] != 0) {
					wFileName.push_back(findData.cFileName[i]);
				} else {
					break;
				}
			}
			ZLUnicodeUtil::ucs2ToUtf8(fileName, wFileName);
			names.push_back(fileName);
		} while (FindNextFileW(handle, &findData));
	}
}

void ZLWin32EncodingConverter::convert(std::string &dst, const char *srcStart, const char *srcEnd) {
	if ((srcStart == srcEnd) || (myCode == 0)) {
		return;
	}

	myBuffer.clear();

	bool hasFirstChar = false;
	if (myUseStoredCharacter) {
		WCHAR symbol;
		char buf[2] = { myStoredCharacter, *srcStart };
		if (MultiByteToWideChar(myCode, 0, buf, 2, &symbol, 1) == 1) {
			hasFirstChar = true;
			myBuffer.push_back(symbol);
			srcStart++;
		}
		myUseStoredCharacter = false;
	}

	int len = srcEnd - srcStart;
	if (len > 0) {
		myBuffer.insert(myBuffer.end(), len, 0);
		WCHAR *bufferStart = (WCHAR*)&myBuffer.front();
		if (hasFirstChar) {
			bufferStart++;
		}
		int ucs2Len = MultiByteToWideChar(myCode, 0, srcStart, len, bufferStart, len);
		myBuffer.erase(myBuffer.begin() + ucs2Len + (hasFirstChar ? 1 : 0), myBuffer.end());

		if (ucs2Len != len) {
			myRBuffer.append(len, '\0');
			char defaultChar = 'X';
			BOOL usedDefaultChar = false;
			int len1 = WideCharToMultiByte(myCode, 0, bufferStart, ucs2Len, (char*)myRBuffer.data(), len, &defaultChar, &usedDefaultChar);
			if (len1 == len - 1) {
				myUseStoredCharacter = true;
				myStoredCharacter = *(srcEnd - 1);
			}
			myRBuffer.erase();
		}
	}

	std::string toAppend;
	ZLUnicodeUtil::ucs2ToUtf8(toAppend, myBuffer);
	dst += toAppend;
	myBuffer.clear();
}

bool OleMainStream::readBookmarks(const char *headerBuffer, const OleEntry &tableEntry) {
	//SttbfBkmk structure is a table of bookmark name strings
	unsigned int beginNamesInfo = OleUtil::getU4Bytes(headerBuffer, 0x142); // address of SttbfBkmk structure
	std::size_t namesInfoLength = (std::size_t)OleUtil::getU4Bytes(headerBuffer, 0x146); // length of SttbfBkmk structure

	if (namesInfoLength == 0) {
		return true; //there's no bookmarks
	}

	OleStream tableStream(myStorage, tableEntry, myBaseStream);
	std::string buffer;
	if (!readToBuffer(buffer, beginNamesInfo, namesInfoLength, tableStream)) {
		return false;
	}

	unsigned int recordsNumber = OleUtil::getU2Bytes(buffer.c_str(), 0x2); //count of records

	std::vector<std::string> names;
	unsigned int offset = 0x6; //initial offset
	for (unsigned int i = 0; i < recordsNumber; ++i) {
		if (buffer.size() < offset + 2) {
			ZLLogger::Instance().println("DocPlugin", "problmes with reading bookmarks names");
			break;
		}
		unsigned int length = OleUtil::getU2Bytes(buffer.c_str(), offset) * 2; //length of string in bytes
		ZLUnicodeUtil::Ucs2String name;
		for (unsigned int j = 0; j < length; j+=2) {
			char ch1 = buffer.at(offset + 2 + j);
			char ch2 = buffer.at(offset + 2 + j + 1);
			ZLUnicodeUtil::Ucs2Char ucs2Char = (unsigned int)ch1 | ((unsigned int)ch2 << 8);
			name.push_back(ucs2Char);
		}
		std::string utf8Name;
		ZLUnicodeUtil::ucs2ToUtf8(utf8Name, name);
		names.push_back(utf8Name);
		offset += length + 2;
	}

	//plcfBkmkf structure is table recording beginning CPs of bookmarks
	unsigned int beginCharPosInfo = OleUtil::getU4Bytes(headerBuffer, 0x14A); // address of plcfBkmkf structure
	std::size_t charPosInfoLen = (std::size_t)OleUtil::getU4Bytes(headerBuffer, 0x14E); // length of plcfBkmkf structure

	if (charPosInfoLen == 0) {
		return true; //there's no bookmarks
	}

	if (!readToBuffer(buffer, beginCharPosInfo, charPosInfoLen, tableStream)) {
		return false;
	}

	static const unsigned int BKF_SIZE = 4;
	std::size_t size = calcCountOfPLC(charPosInfoLen, BKF_SIZE);
	std::vector<unsigned int> charPage;
	for (std::size_t index = 0, offset = 0; index < size; ++index, offset += 4) {
		charPage.push_back(OleUtil::getU4Bytes(buffer.c_str(), offset));
	}

	for (std::size_t i = 0; i < names.size(); ++i) {
		if (i >= charPage.size()) {
			break; //for the case if something in these structures goes wrong, to not to lose all bookmarks
		}
		Bookmark bookmark;
		bookmark.CharPosition = charPage.at(i);
		bookmark.Name = names.at(i);
		myBookmarks.push_back(bookmark);
	}

	return true;
}