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libsass/sass2scss.cpp  view on Meta::CPAN

			if (!(
				// strip css and src comments if option is set
				(IS_COMMENT(converter) && STRIP_COMMENT(converter)) ||
				// strip src comment even if strip option is not set
				// but only if the keep src comment option is not set
				(IS_SRC_COMMENT(converter) && ! KEEP_COMMENT(converter))
			))
			{
				// flush data and buffer whitespace
				scss += flush(sass, converter);
			}

			// get postion of last meaningfull char
			size_t pos_right = sass.find_last_not_of(SASS2SCSS_FIND_WHITESPACE);

			// check for invalid result
			if (pos_right != string::npos)
			{

				// get the last meaningfull char
				string close = sass.substr(pos_right, 1);

				// check if next line should be concatenated (list mode)
				converter.comma = IS_PARSING(converter) && close == ",";
				converter.semicolon = IS_PARSING(converter) && close == ";";

				// check if we have more than
				// one meaningfull char
				if (pos_right > 0)
				{

					// get the last two chars from string
					string close = sass.substr(pos_right - 1, 2);
					// update parser status for expicitly closed comment
					if (close == "*/") converter.comment = "";

				}

			}
			// EO have meaningfull chars from end

		}
		// EO have meaningfull chars from start

		// return scss
		return scss;

	}
	// EO process

	// read line with either CR, LF or CR LF format
	// http://stackoverflow.com/a/6089413/1550314
	static std::istream& safeGetline(std::istream& is, std::string& t)
	{
		t.clear();

		// The characters in the stream are read one-by-one using a std::streambuf.
		// That is faster than reading them one-by-one using the std::istream.
		// Code that uses streambuf this way must be guarded by a sentry object.
		// The sentry object performs various tasks,
		// such as thread synchronization and updating the stream state.

		std::istream::sentry se(is, true);
		std::streambuf* sb = is.rdbuf();

		for(;;) {
			int c = sb->sbumpc();
			switch (c) {
				case '\n':
					return is;
				case '\r':
					if(sb->sgetc() == '\n')
						sb->sbumpc();
					return is;
				case EOF:
					// Also handle the case when the last line has no line ending
					if(t.empty())
						is.setstate(std::ios::eofbit);
					return is;
				default:
					t += (char)c;
			}
		}
	}

	// the main converter function for c++
	char* sass2scss (const string sass, const int options)
	{

		// local variables
		string line;
		string scss = "";
		stringstream stream(sass);

		// create converter variable
		converter converter;
		// initialise all options
		converter.comma = false;
		converter.property = false;
		converter.selector = false;
		converter.semicolon = false;
		converter.end_of_file = false;
		converter.comment = "";
		converter.whitespace = "";
		converter.indents.push("");
		converter.options = options;

		// read line by line and process them
		while(safeGetline(stream, line) && !stream.eof())
		{ scss += process(line, converter); }

		// create mutable string
		string closer = "";
		// set the end of file flag
		converter.end_of_file = true;
		// process to close all open blocks
		scss += process(closer, converter);

		// allocate new memory on the heap
		// caller has to free it after use
		char * cstr = (char*) malloc (scss.length() + 1);