compilation

src/main.cc

@@ -1,18 +1,56 @@
 #include "parser.h"
+#include "util.h"
 #include <fstream>
 #include <iostream>
-#include <sstream>
+#include <sys/stat.h>
+#include <thread>
 
 int main() {
+  if (geteuid() != 0) {
+    std::cerr << "This program needs to be ran as root.\n";
+    return 1;
+  }
+  mkdir("/tmp/shrap", 0777);
+
   std::ifstream file("zlib.shrap");
   if (!file) {
     std::cerr << "Error opening file\n";
     return 1;
   }
 
-  std::stringstream buffer;
-  buffer << file.rdbuf();
+  Expr pkg = Expr::parse(file);
 
-  Expr pkg = Expr::parse(buffer.str());
-  std::cout << pkg.get("name").value << std::endl;
-}
+  Expr src = pkg.get("src").children[0];
+  std::string src_type = src.children[0].value;
+  std::string src_url = src.children[1].value;
+  std::string src_path = "/tmp/shrap/" + src.children[2].value;
+
+  if (src_type == "tar") {
+    std::string archive_path = "/tmp/shrap/" + Util::basename(src_url);
+
+    // TODO: replace wget with a library for zero runtime dependencies
+    Util::shell_command("wget -O " + archive_path + " " + src_url);
+
+    // TODO: check archive hash from src.children[3].value
+
+    Util::shell_command("tar xf " + archive_path + " -C /tmp/shrap/");
+  } else {
+    std::cerr << "ERROR: unrecognized src type: " << src_type << "\n";
+    return 1;
+  }
+
+  std::string jobs = std::to_string(std::thread::hardware_concurrency());
+
+  for (const auto &step : pkg.get("build").children) {
+    std::string step_type = step.children[0].value;
+
+    if (step_type == "configure_make") {
+      Util::shell_command("./configure --prefix=/usr", src_path);
+      Util::shell_command("make -j " + jobs, src_path);
+      Util::shell_command("make install", src_path);
+    } else {
+      std::cerr << "ERROR: unrecognized step type: " << step_type << "\n";
+      return 1;
+    }
+  }
+}