Method read_asc

src/openboardview/FileFormats/ASCFile.cpp:102–136

* Read one of the *.asc file * pins.asc, parts.asc (not supported), nets.asc (not supported), nails.asc, format.asc * *.bom files not supported either */

 * *.bom files not supported either
 */
bool ASCFile::read_asc(const filesystem::path &filepath, void (ASCFile::*parser)(char *&, char *&, char *&, char *&, line_iterator_t&)) {
	if (filepath.empty()) return false;
	std::vector<char> buf = file_as_buffer(filepath, error_msg);
	if (buf.empty()) return false;

	ENSURE_OR_FAIL(buf.size() > 4, error_msg, return false);
	size_t file_buf_size = 3 * (1 + buf.size());
	file_buf             = (char *)calloc(1, file_buf_size);
	ENSURE_OR_FAIL(file_buf != nullptr, error_msg, return false);

	std::copy(buf.begin(), buf.end(), file_buf);
	file_buf[buf.size()] = 0;
	// This is for fixing degenerate utf8
	char *arena     = &file_buf[buf.size() + 1];
	char *arena_end = file_buf + file_buf_size - 1;
	*arena_end      = 0;

	std::vector<char *> lines;
	stringfile(file_buf, lines);

	std::vector<char *>::iterator line_it = lines.begin();
	while (line_it != lines.end()) {
		char *line = *line_it;
		++line_it;

		while (isspace((uint8_t)*line)) line++;
		if (!line[0]) continue;

		char *p = line;
		char *s = nullptr;

		(this->*parser)(p, s, arena, arena_end, line_it);
	}
	return true;
}

/*
 * Updates element counts