static int handle_redirection(const char *cmd, bool in, bool out, bool err) {
if (!cmd || cmd[0] == '\0') return 0;
if (cmd[0] == '!') {
// redirection to a process
return handle_redirection_proc (cmd + 1, in, out, err);
} else {
// redirection to a file
int f, flag = 0, mode = 0;
flag |= in ? O_RDONLY : 0;
flag |= out ? O_WRONLY | O_CREAT : 0;
flag |= err ? O_WRONLY | O_CREAT : 0;
#ifdef __WINDOWS__
mode = _S_IREAD | _S_IWRITE;
#else
mode = S_IRUSR | S_IWUSR;
#endif
f = open (cmd, flag, mode);
if (f < 0) {
eprintf("Cannot open: %s\n", cmd);
return 1;
}
if (in) dup2 (f, 0);
if (out) dup2 (f, 1);
if (err) dup2 (f, 2);
close (f);
return 0;
}
}
static int handle_redirection(const char *cmd, bool in, bool out, bool err) {
if (!cmd || cmd[0] == '\0') return 0;
if (cmd[0] == '"') {
#if __UNIX__
if (in) {
int pipes[2];
if (pipe (pipes) != -1) {
write (pipes[1], cmd+1, strlen (cmd)-2);
write (pipes[1], "\n", 1);
close (0);
dup2 (pipes[0], 0);
} else {
eprintf ("[ERROR] rarun2: Cannot create pipe\n");
}
}
#else
#warning quoted string redirection handle not yet done
#endif
return 0;
} else if (cmd[0] == '!') {
// redirection to a process
return handle_redirection_proc (cmd + 1, in, out, err);
} else {
// redirection to a file
int f, flag = 0, mode = 0;
flag |= in ? O_RDONLY : 0;
flag |= out ? O_WRONLY | O_CREAT : 0;
flag |= err ? O_WRONLY | O_CREAT : 0;
#ifdef __WINDOWS__
mode = _S_IREAD | _S_IWRITE;
#else
mode = S_IRUSR | S_IWUSR;
#endif
f = open (cmd, flag, mode);
if (f < 0) {
eprintf ("[ERROR] rarun2: Cannot open: %s\n", cmd);
return 1;
}
#define DUP(x) { close(x); dup2(f,x); }
if (in) DUP(0);
if (out) DUP(1);
if (err) DUP(2);
close (f);
return 0;
}
}
static int handle_redirection(const char *cmd, bool in, bool out, bool err) {
if (!cmd || cmd[0] == '\0') {
return 0;
}
#if __APPLE__ && !__POWERPC__
//XXX handle this in other layer since things changes a little bit
//this seems like a really good place to refactor stuff
return 0;
#endif
if (cmd[0] == '"') {
#if __UNIX__
if (in) {
int pipes[2];
if (pipe (pipes) != -1) {
size_t cmdl = strlen (cmd)-2;
if (write (pipes[1], cmd + 1, cmdl) != cmdl) {
eprintf ("[ERROR] rarun2: Cannot write to the pipe\n");
close (0);
return 1;
}
if (write (pipes[1], "\n", 1) != 1) {
eprintf ("[ERROR] rarun2: Cannot write to the pipe\n");
close (0);
return 1;
}
close (0);
dup2 (pipes[0], 0);
} else {
eprintf ("[ERROR] rarun2: Cannot create pipe\n");
}
}
#else
#ifdef _MSC_VER
#pragma message ("string redirection handle not yet done")
#else
#warning quoted string redirection handle not yet done
#endif
#endif
return 0;
} else if (cmd[0] == '!') {
// redirection to a process
return handle_redirection_proc (cmd + 1, in, out, err);
} else {
// redirection to a file
int f, flag = 0, mode = 0;
flag |= in ? O_RDONLY : 0;
flag |= out ? O_WRONLY | O_CREAT : 0;
flag |= err ? O_WRONLY | O_CREAT : 0;
#ifdef __WINDOWS__
mode = _S_IREAD | _S_IWRITE;
#else
mode = S_IRUSR | S_IWUSR;
#endif
f = open (cmd, flag, mode);
if (f < 0) {
eprintf ("[ERROR] rarun2: Cannot open: %s\n", cmd);
return 1;
}
#define DUP(x) { close(x); dup2(f,x); }
if (in) {
DUP(0);
}
if (out) {
DUP(1);
}
if (err) {
DUP(2);
}
close (f);
return 0;
}
}
