1 files changed, 339 insertions, 0 deletions
diff --git a/src/task_cc.cc b/src/task_cc.cc
new file mode 100644
index 0000000..af9cf7a
--- /dev/null
+++ b/src/task_cc.cc
@@ -0,0 +1,339 @@
+#include "task_cc.h"
+
+#include <iostream>
+#include <fstream>
+
+#include "libcppbuild.h"
+#include "settings.h"
+#include "execute.h"
+
+namespace
+{
+std::string readFile(const std::string &fileName)
+{
+	std::ifstream ifs(fileName.c_str(), std::ios::in | std::ios::binary | std::ios::ate);
+
+	std::ifstream::pos_type fileSize = ifs.tellg();
+	ifs.seekg(0, std::ios::beg);
+
+	std::vector<char> bytes(fileSize);
+	ifs.read(bytes.data(), fileSize);
+
+	return std::string(bytes.data(), fileSize);
+}
+
+std::vector<std::string> readDeps(const std::string& depFile)
+{
+	if(!std::filesystem::exists(depFile))
+	{
+		return {};
+	}
+
+	auto str = readFile(depFile);
+
+	std::vector<std::string> output;
+	std::string tmp;
+	bool start{false};
+	bool in_whitespace{false};
+	for(const auto& c : str)
+	{
+		if(c == '\\' || c == '\n')
+		{
+			continue;
+		}
+
+		if(c == ':')
+		{
+			start = true;
+			continue;
+		}
+
+		if(!start)
+		{
+			continue;
+		}
+
+		if(c == ' ' || c == '\t')
+		{
+			if(in_whitespace)
+			{
+				continue;
+			}
+
+			if(!tmp.empty())
+			{
+				output.push_back(tmp);
+			}
+			tmp.clear();
+			in_whitespace = true;
+		}
+		else
+		{
+			in_whitespace = false;
+			tmp += c;
+		}
+	}
+
+	if(!tmp.empty())
+	{
+		output.push_back(tmp);
+	}
+
+	return output;
+}
+} // namespace ::
+
+TaskCC::TaskCC(const BuildConfiguration& config, const Settings& settings,
+               const std::string& sourceDir, const std::string& source)
+	: Task(config)
+	, config(config)
+	, settings(settings)
+	, sourceDir(sourceDir)
+{
+	sourceFile = sourceDir;
+	sourceFile /= source;
+
+	std::filesystem::path base = settings.builddir;
+	base /= config.target;
+	base += "-";
+	base += sourceFile.stem();
+
+	if(sourceFile.extension().string() == ".c")
+	{
+		base += "_c";
+	}
+	else
+	{
+		base += "_cc";
+	}
+
+	targetFile = base;
+	targetFile += ".o";
+	depsFile = base;
+	depsFile += ".d";
+	flagsFile = base;
+	flagsFile += ".flags";
+
+	target_type = TargetType::Object;
+	if(sourceFile.extension().string() == ".c")
+	{
+		source_language = Language::C;
+	}
+	else
+	{
+		source_language = Language::Cpp;
+	}
+}
+
+std::string TaskCC::name() const
+{
+	return target();
+}
+
+bool TaskCC::dirtyInner()
+{
+	if(!std::filesystem::exists(sourceFile))
+	{
+		//std::cout << "Missing source file: " << std::string(sourceFile) << "\n";
+		return true;
+	}
+
+	if(!std::filesystem::exists(targetFile))
+	{
+		//std::cout << "Missing targetFile\n";
+		return true;
+	}
+
+	if(!std::filesystem::exists(depsFile))
+	{
+		//std::cout << "Missing depsFile\n";
+		return true;
+	}
+
+	if(!std::filesystem::exists(flagsFile))
+	{
+		//std::cout << "Missing flagsFile\n";
+		return true;
+	}
+
+	if(std::filesystem::last_write_time(sourceFile) >
+	   std::filesystem::last_write_time(depsFile))
+	{
+		//std::cout << "The sourceFile newer than depsFile\n";
+		return true;
+	}
+
+	{
+		auto lastFlags = readFile(flagsFile.string());
+		if(flagsString() != lastFlags)
+		{
+			//std::cout << "The compiler flags changed\n";
+			return true;
+		}
+	}
+
+	auto depList = readDeps(depsFile.string());
+	for(const auto& dep : depList)
+	{
+		if(!std::filesystem::exists(dep) ||
+		   std::filesystem::last_write_time(targetFile) <
+		   std::filesystem::last_write_time(dep))
+		{
+			//std::cout << "The targetFile older than " << std::string(dep) << "\n";
+			return true;
+		}
+	}
+
+	if(std::filesystem::last_write_time(sourceFile) >
+	   std::filesystem::last_write_time(targetFile))
+	{
+		//std::cout << "The targetFile older than sourceFile\n";
+		return true;
+	}
+
+	return false;
+}
+
+int TaskCC::runInner()
+{
+	if(!std::filesystem::exists(sourceFile))
+	{
+		std::cout << "Missing source file: " << sourceFile.string() << "\n";
+		return 1;
+	}
+
+	auto args = getCompilerArgs();
+
+	{ // Write flags to file.
+		std::ofstream flagsStream(flagsFile.string());
+		flagsStream << flagsString();
+	}
+
+	if(settings.verbose == 0)
+	{
+		std::cout << compiler() << " " <<
+			sourceFile.lexically_normal().string() << " => " <<
+			targetFile.lexically_normal().string() << "\n";
+	}
+
+	return execute(compiler(), args, settings.verbose > 0);
+}
+
+int TaskCC::clean()
+{
+	if(std::filesystem::exists(targetFile))
+	{
+		std::cout << "Removing " << targetFile.string() << "\n";
+		std::filesystem::remove(targetFile);
+	}
+
+	if(std::filesystem::exists(depsFile))
+	{
+		std::cout << "Removing " << depsFile.string() << "\n";
+		std::filesystem::remove(depsFile);
+	}
+
+	if(std::filesystem::exists(flagsFile))
+	{
+		std::cout << "Removing " << flagsFile.string() << "\n";
+		std::filesystem::remove(flagsFile);
+	}
+
+	return 0;
+}
+
+std::vector<std::string> TaskCC::depends() const
+{
+	return {};
+}
+
+std::string TaskCC::target() const
+{
+	return targetFile.string();
+}
+
+std::string TaskCC::toJSON() const
+{
+	std::string json;
+	json += "\t{\n";
+	json += "\t\t\"directory\": \"" + sourceDir.string() + "\",\n";
+	json += "\t\t\"file\": \"" + sourceFile.lexically_normal().string() + "\",\n";
+	json += "\t\t\"output\": \"" + targetFile.string() + "\",\n";
+	json += "\t\t\"arguments\": [ \"" + compiler() + "\"";
+	auto args = getCompilerArgs();
+	for(const auto& arg : args)
+	{
+		json += ", \"" + arg + "\"";
+	}
+	json += " ]\n";
+	json += "\t}";
+	return json;
+}
+
+std::vector<std::string> TaskCC::flags() const
+{
+	switch(sourceLanguage())
+	{
+	case Language::C:
+		return config.cflags;
+	case Language::Cpp:
+		return config.cxxflags;
+	default:
+		std::cerr << "Unknown CC target type\n";
+		exit(1);
+		break;
+	}
+}
+
+std::string TaskCC::flagsString() const
+{
+	std::string flagsStr = compiler();
+	for(const auto& flag : flags())
+	{
+		flagsStr += " " + flag;
+	}
+	return flagsStr;
+}
+
+std::vector<std::string> TaskCC::getCompilerArgs() const
+{
+	auto compiler_flags = flags();
+
+	std::vector<std::string> args;
+	args.push_back("-MMD");
+
+	if(std::filesystem::path(config.target).extension() == ".so")
+	{
+		// Add -fPIC arg to all contained object files
+		args.push_back("-fPIC");
+	}
+
+	args.push_back("-c");
+	args.push_back(sourceFile.string());
+	args.push_back("-o");
+	args.push_back(targetFile.string());
+
+	for(const auto& flag : compiler_flags)
+	{
+		// Is arg an added include path?
+		if(flag.substr(0, 2) == "-I")
+		{
+			std::string include_path = flag.substr(2);
+			include_path.erase(0, include_path.find_first_not_of(' '));
+			std::filesystem::path path(include_path);
+
+			// Is it relative?
+			if(path.is_relative())
+			{
+				path = (sourceDir / path).lexically_normal();
+				std::string new_include_path = "-I" + path.string();
+				args.push_back(new_include_path);
+				continue;
+			}
+		}
+
+		args.push_back(flag);
+	}
+
+	return args;
+}