boxberry/src/SourceFile.cc

#include "SourceFile.h"

#include <iostream>
#include <fstream>
#include <sstream>

static bool startsWith(const std::string &a, const std::string &b, std::string &after) {
	if (a.size() < b.size())
		return false;

	for (size_t i = 0; i < b.size(); ++i) {
		if (a[i] != b[i])
			return false;
	}

	after = a.substr(b.size());
	return true;
}

static void parseParts(std::vector<std::string> &vec, const std::string &str) {
	std::istringstream ss(str);
	std::string part;
	while (ss >> part) {
		vec.push_back(part);
	}
}

SourceFile::SourceFile(std::string dir, std::string name):
		dir_(std::move(dir)), name_(std::move(name)) {

	std::ifstream file(dir_ + "/" + name_);

	std::string line;
	std::string content;
	while (std::getline(file, line)) {
		if (line.size() < 4) continue;
		if (line[0] != '/' || line[1] != '/' || line[2] != '#') continue;

		if (startsWith(line, "//# pkgs:", content)) {
			parseParts(pkgs_, content);
		} else if (startsWith(line, "//# cflags:", content)) {
			parseParts(pkgs_, content);
		} else if (startsWith(line, "//# ldflags:", content)) {
			parseParts(pkgs_, content);
		}
	}
}