diff options
Diffstat (limited to 'task.cc')
| -rw-r--r-- | task.cc | 263 |
1 files changed, 0 insertions, 263 deletions
@@ -1,263 +0,0 @@ -#include "task.h" - -#include <iostream> -#include <fstream> -#include <unistd.h> -#include <cstring> -#include <sys/types.h> -#include <sys/wait.h> -#include <spawn.h> - -#include "libcppbuild.h" -#include "settings.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 :: - -Task::Task(const BuildConfiguration& config, const Settings& settings, - const std::string& source) - : config(config) - , settings(settings) -{ - sourceFile = source; - targetFile = settings.builddir / sourceFile.stem(); - targetFile += ".o"; - depsFile = settings.builddir / sourceFile.stem(); - depsFile += ".d"; -} - -bool Task::dirty() -{ - 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::last_write_time(sourceFile) > - std::filesystem::last_write_time(depsFile)) - { - //std::cout << "The sourceFile newer than depsFile\n"; - return true; - } - - auto depList = readDeps(depsFile); - 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 parent_waitpid(pid_t pid) -{ - int status; - - if(waitpid(pid, &status, 0) != pid) - { - return 1; - } - - return status; -} -int Task::run() -{ - if(!std::filesystem::exists(sourceFile)) - { - std::cout << "Missing source file: " << std::string(sourceFile) << "\n"; - return 1; - } - - std::string comp = "/usr/bin/g++"; - auto flags = config.cxxflags; - if(std::string(sourceFile.extension()) == ".c") - { - comp = "/usr/bin/gcc"; - flags = config.cflags; - } - - char source[256]; - strcpy(source, std::string(sourceFile).data()); - char target[256]; - strcpy(target, std::string(targetFile).data()); - char pwd[256]; - strcpy(pwd, std::string(std::filesystem::current_path()).data()); - std::vector<const char*> argv; - //args.push_back("/bin/echo"); - if(comp == "/usr/bin/gcc") - { - argv.push_back("/usr/bin/gcc"); - } - else - { - argv.push_back("/usr/bin/g++"); - } - - argv.push_back("-MMD"); - argv.push_back("-c"); - argv.push_back(source); - argv.push_back("-o"); - argv.push_back(target); - - for(const auto& flag : flags) - { - argv.push_back(flag.data()); - } - - std::string cmd; - for(const auto& arg : argv) - { - if(arg == nullptr) - { - break; - } - if(!cmd.empty()) - { - cmd += " "; - } - cmd += arg; - } - std::cout << cmd << "\n"; - -#if 0 - auto pid = vfork(); - if(pid == 0) - { - execv(comp.data(), (char**)argv.data()); - } -#else - pid_t pid; - if(posix_spawn(&pid, comp.data(), nullptr, nullptr, (char**)argv.data(), nullptr)) - { - return 1;//exit(1); - } -#endif - - return parent_waitpid(pid); -} - -int Task::clean() -{ - if(std::filesystem::exists(targetFile)) - { - std::cout << "Removing " << std::string(targetFile) << "\n"; - std::filesystem::remove(targetFile); - } - - if(std::filesystem::exists(depsFile)) - { - std::cout << "Removing " << std::string(depsFile) << "\n"; - std::filesystem::remove(depsFile); - } - - return 0; -} - -std::vector<std::string> Task::depends() const -{ - return {}; -} - -std::string Task::target() const -{ - return targetFile; -} |