did this while lecture (builtins, parsing, exec and env by stdlib)

1 files changed, 26 insertions, 0 deletions

diff --git a/smash/main.c b/smash/main.c
new file mode 100644
index 0000000..0b3dc20
--- /dev/null
+++ b/smash/main.c
@@ -0,0 +1,26 @@
+#include "exec.h"
+
+#include "../lib/sys/io.h"
+#include "../lib/cstr/cstr.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[] = "$ ";
+
+	while (1) {
+		write(STDOUT_FD, prompt, cstr_length(prompt));
+		read(STDIN_FD, buf, 1024);
+		buf[cstr_length(buf) - 1] = 0;
+		exec(buf);
+		clear_buf(buf);
+	}
+}