Skeleton for parse() function

websh.c

@@ -8,17 +8,60 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include <errno.h>
 #include <signal.h>
 
 static const char *pname;
 
+void parse(int argc, char *argv[])
+{
+	int eFlag = 0;
+	int hFlag = 0;
+	int sFlag = 0;
+
+	int optInd = 0;
+
+	while ((optInd = getopt(argc, argv, "ehs:")) != -1) {
+		switch (optInd) {
+			case 'e':
+				if (eFlag != 0) {
+					usage();
+				} else {
+					eFlag = 1;
+				}
+				break;
+			case 'h':
+				if (hFlag != 0) {
+					usage();
+				} else {
+					hFlag = 1;
+				}
+				break;
+			case 's':
+				if (sFlag != 0) {
+					usage();
+				} else {
+					sFlag = 1;
+					char *sArg = optarg;
+				}
+				break;
+			case '?':
+				usage();
+			default:
+				assert(0);
+				
+		}
+	}
+
+
+	pname = argv[0];
+}
+
 int main(int argc, char *argv[])
 {
-	pname = argv[0];
-
-	printf("[%s]\n", pname);
+	parse(argc, argv);
 	
 	return 0;
 }