Function IsFilePath

src/common/CmdLine.cpp:1373–1438

}

bool IsFilePath(LPCWSTR asFilePath, const bool abFullRequired /*= false*/)
{
	if (!asFilePath || !*asFilePath)
		return false;

	// Если в пути встречаются недопустимые символы
	// If contains some illegal characters
	if (wcschr(asFilePath, L'"') ||
		wcschr(asFilePath, L'>') ||
		wcschr(asFilePath, L'<') ||
		wcschr(asFilePath, L'|')
		// '/' don't restrict - it's allowed both in Windows and in cygwin
		)
	{
		return false;
	}

	// skip UNC prefix "\\?\" in paths like "\\?\C:\Tools" or "\\?\UNC\Server\Share"
	bool isUncPath = false;
	if (asFilePath[0] == L'\\' && asFilePath[1] == L'\\' && asFilePath[2] == L'?' && asFilePath[3] == L'\\')
	{
		asFilePath += 4; //-V112
		isUncPath = true;
	}

	// Don't allow two (and more) ":\"
	const auto* pszColon = wcschr(asFilePath, L':');
	if (pszColon)
	{
		// If the ":" exists, that it should be the path like "X:\xxx", i.e. ":" should be second character
		if (pszColon != (asFilePath + 1))
			return false;

		if (!isDriveLetter(asFilePath[0]))
			return false;

		if (wcschr(pszColon + 1, L':'))
			return false;
	}

	if (abFullRequired)
	{
		if (isUncPath)
		{
			// For UNC network paths here should be "UNC\server\..."
			const auto* unc = asFilePath;
			if (unc[0] == L'U' && unc[1] == L'N' && unc[2] == L'C'
				&& unc[3] == L'\\' && unc[4] && unc[4] != L'\\' && wcschr(unc + 5, L'\\'))
				return true;
		}
		else
		{
			const auto* srv = asFilePath;
			if (srv[0] == L'\\' && srv[1] == L'\\' && srv[2] && srv[2] != L'\\' && wcschr(srv + 3, L'\\'))
				return true;
		}

		// And old good driver letter paths