simple tokenizer for the foolshell

1 files changed, 48 insertions, 6 deletions

diff --git a/userspace/foolshell.c b/userspace/foolshell.c
index 7a029ef..173b0b2 100644
--- a/userspace/foolshell.c
+++ b/userspace/foolshell.c
@@ -27,19 +27,61 @@ int main(int argc, char **argv)
     {
 	prompt();
         fgets(buf,255,input);
-	buf[strlen(buf)-1]=0;
-//	puts(buf);
+	buf[strlen(buf)-1]=0; // remove \n
 	process(buf);
+    }
+
+    return 0;
+}
+
+char **tokenize(char *buf)
+{
+    
+    char **token;
+    token=malloc(10*sizeof(char*));
+
+    int l=strlen(buf);
+
+    int i;
+    int c=0;
+
+    for(i=0;i<l;i++)
+    {  
+	// init space for next token
+	token[c]=malloc(256);
+
+	//skip all the whitespace
+	while(buf[i]==' '&&i<l)i++;
+	if(i==l)break;
+
+	//get token
+	int t=0;
+
+	while(buf[i]!=' '&&i<l)
+	{
+	    token[c][t]=buf[i];
+	    t++;
+	    i++;
+	}
+	token[c][t]=0;
+
+
+//	printf("token %i : <%s>\n",c, token[c]);
+	c++;
 
     }
 
+    return token;
 
-    return 0;
 }
 
-int process(char *command)
+int process(char *buf)
 {
-	// copied from trottelshell
+    
+    char **token=tokenize(buf);
+    char *command=token[0];
+  //  puts(command);
+    // copied from trottelshell
 
     if(!strcmp(command,"HELP"))
     {
@@ -102,7 +144,7 @@ int process(char *command)
     else if(!strcmp(command,"ECHO"))
     {
 
-	printf("%s\n",command);
+	printf("%s\n",token[1]);
 
     }
     else