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#include "exec.h"
#include "../lib/sys/io.h"
#include "../lib/cstr/cstr.h"
#include "../lib/sys/dup2.h"
#include "../lib/io/io.h"
#include "../lib/sys/errno.h"
#define BUFSIZ 1024
void clear_buf(char *buf)
{
for (int i = 0; i < BUFSIZ; ++i)
buf[i] = 0;
}
int main(int argc, char *argv[], char *envp[])
{
char buf[BUFSIZ] = {0};
char prompt[] = "$ ";
u64 line_length;
int fd = STDIN_FD;
if (argc == 2) {
fd = open(argv[1], OPEN_READ_ONLY, 0);
if (fd < 0)
wstdf("%s\n", errstr[-fd]);
}
while (1) {
if (fd == STDIN_FD)
write(STDOUT_FD, prompt, cstr_length(prompt));
int p = read(fd, buf, BUFSIZ);
line_length = cstr_length(buf);
if (line_length == 0)
break;
if (buf[line_length - 1] == '\n')
buf[--line_length] = 0;
if (line_length > 0) {
exec(buf);
}
clear_buf(buf);
}
if (fd != STDOUT_FD)
close(fd);
}
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