error append

README

@@ -1,2 +1,18 @@
-Library for easy shell like syntax and command execution in C++.
+Cppipe allows you to write and execute script like C++ programs.
+It offers a shell like synthax for seamless command execution.
+
+In this way your scripts can benefit from increased control and speed, while
+maintaining a lot of the potential for simple command callsynthax.
+
+INSTALLATION:
+In terminal use:
+sudo ./install.sh
+
+HOW TO WRITE A CPPIPE PROGRAM:
+Just include <cppipe/commands.hpp>
+
+HOW TO EXECUTE A CPPIPE PROGRAM:
+In terminal use:
+cppipe my_cppipe_program.cpp
+
  

commands.cpp

@@ -130,7 +130,8 @@ str $(const PendingCmd& cmd)
 
 	// check output size (not portable?)
 	int pipe_size;
-	int rc = ioctl(p.out, FIONREAD, &pipe_size); assert(rc==0);
+	// int rc = ioctl(p.out, FIONREAD, &pipe_size); assert(rc==0);
+	ioctl(p.out, FIONREAD, &pipe_size);
 
 	// write to the string directly, todo: find a better way
 	str output;
@@ -244,6 +245,16 @@ PendingCmd& operator>=(const PendingCmd& ccmd, fd_t fd)
 	return cmd;
 }
 
+PendingCmd& operator>>=(const PendingCmd& cmd, const char* file)
+{
+	fd_t fd = open_or_die(file, O_WRONLY | O_CREAT | O_APPEND);
+	return cmd >= fd;
+}
+PendingCmd& operator>>=(const PendingCmd& cmd, fd_t fd)
+{
+	return cmd >= fd;
+}
+
 PendingCmd& operator<(const PendingCmd& cmd, const char* file)
 {
 	fd_t fd = open_or_die(file, O_RDONLY);
@@ -253,6 +264,7 @@ PendingCmd& operator<(const PendingCmd& ccmd, fd_t fd)
 {
 	auto& cmd = const_cast<PendingCmd&>(ccmd);
 	assert(cmd.in == 0 || !"ERROR: Input is already redirected!");
+
 	cmd.in = fd;
 	return cmd;
 }

commands.hpp

@@ -125,10 +125,13 @@ PendingCmd& operator>(const PendingCmd&, fd_t);
 /* Same but append rather then truncate the file */
 PendingCmd& operator>>(const PendingCmd&, const char* file);
 PendingCmd& operator>>(const PendingCmd&, fd_t);
+
 /* Redirect errors to file */
 PendingCmd& operator>=(const PendingCmd&, const char* file);
 PendingCmd& operator>=(const PendingCmd&, fd_t);
-/* todo >>= */
+/* Same but append rather then truncate the file */
+PendingCmd& operator>>=(const PendingCmd&, const char* file);
+PendingCmd& operator>>=(const PendingCmd&, fd_t);
 
 /* Shell oprator < use file as input */
 PendingCmd& operator<(const PendingCmd&, const char* file);
@@ -144,7 +147,7 @@ PendingCmd operator&(const PendingCmd&, const Cmd&);
    to allow for simpler synthax, speed and safety
    e.g:         echo + some_string
    rather then: echo + some_string.c_str() */
-class str: public std::basic_string<char> /* todo: allocator */
+class LeakStr: public std::basic_string<char> /* todo: allocator */
 {
 public:
 	using std::basic_string<char>::basic_string;
@@ -155,6 +158,6 @@ public:
    shell:
    var=$(ls)
    becomes:
-   string var = $(ls);
+   auto var = $(ls);
 */
-str $(const PendingCmd&);
+LeakStr $(const PendingCmd&);

test.cpp

@@ -3,13 +3,8 @@
 #include <sys/wait.h>
 #include <iostream>
 
-// tab vs space
 // shaded obj?
-// fix warning
 /* close files on destruction ?*/
-/* -> for error ? */
-// check if processes normal_exit
-
 using namespace std;
 int main()
 {