run Cmd

src/commands.hpp

@@ -26,10 +26,10 @@ public:
 	/* Execute the command, if arguments are not given use stdin,out,err
 	   else use the given file desciptors. this can also be used
 	   to redirect err to out by giving err=1 like in shell */
-	DeadProc operator()(fd_t in=0, fd_t out=1, fd_t err=2);
+	DeadProc operator()(fd_t in=0, fd_t out=1, fd_t err=2) const;
 
 	/* Run the command, don't wait to return like shell's & */
-	Proc detach(fd_t in=0, fd_t out=1, fd_t err=2);
+	Proc detach(fd_t in=0, fd_t out=1, fd_t err=2) const;
 
 	/* Append arguments */
 	void append_args(std::initializer_list<const char*>);
@@ -81,6 +81,9 @@ private:
 /* Like shell's exec */
 void exec(const Cmd&);    /* todo: take Pending? */
 
+/* Execute the command, like the operator() */
+DeadProc run(Cmd&);
+
 /* Run commands in sequence
    shell:
        ls

src/commands.inl

@@ -28,7 +28,7 @@ namespace _cppipe
 	}
 }
 
-inline DeadProc Cmd::operator()(fd_t in, fd_t out, fd_t err)
+inline DeadProc Cmd::operator()(fd_t in, fd_t out, fd_t err) const
 {
 	Proc p = createProcess(argv.data(), in, out, err);
 
@@ -43,7 +43,7 @@ inline DeadProc Cmd::operator()(fd_t in, fd_t out, fd_t err)
 	return wait(p);
 }
 
-inline Proc Cmd::detach(fd_t in, fd_t out, fd_t err)
+inline Proc Cmd::detach(fd_t in, fd_t out, fd_t err) const
 {
 	return createProcess(argv.data(), in, out, err);
 }
@@ -154,6 +154,11 @@ inline void exec(const Cmd& cmd)
 	exec_or_die(cmd.argv.data());
 }
 
+DeadProc run(const Cmd& cmd)
+{
+	return cmd();
+}
+
 inline PendingCmd operator,(const PendingCmd& cleft, const Cmd& right)
 {
 	auto& left = const_cast<PendingCmd&>(cleft);
@@ -284,9 +289,9 @@ inline PendingCmd operator&(const PendingCmd& cleft, const Cmd& right)
 	return PendingCmd(right);
 }
 
-inline std::ostream& operator<<(std::ostream& s, const Cmd& c)
+inline std::ostream& operator<<(std::ostream& s, const Cmd& cmd)
 {
-	for(size_t i = 0; i < c.argv.size() - 1; ++i)
-		s << '"' << c.argv[i] << '"' << ' ';
-	return s << std::endl;
+	for(size_t i = 0; i < cmd.argv.size() - 1; ++i)
+		s << '"' << cmd.argv[i] << '"' << ' ';
+	return s;
 }

todo.txt

@@ -3,6 +3,7 @@ tips (sigaction SIGCHILD, SIG_IGN, SIG_DFL)
 make sure file descriptors are closed when no longer used
 cppipe compile options from tft
 respect CXXFLAGS LDFLAGS
+remove append_args
 
 ?
 run(cmd)