piperei working finally :)

1 files changed, 31 insertions, 26 deletions

diff --git a/userspace/cat.c b/userspace/cat.c
index 94cbdaa..41768ea 100644
--- a/userspace/cat.c
+++ b/userspace/cat.c
@@ -3,34 +3,39 @@
 
 int main(int argc, char **argv)
 {   
-    printf("hmm\n");
-    printf("pwd=%s\n",getenv("PWD"));
-    FILE *f;
-    if(argc>1){
-	char buf[256];
-	if(argv[1][0]!='/')
-	{
-	    sprintf(buf,"%s/%s",getenv("PWD"),argv[1]);
-	    printf("cat %s\n",buf);
-	    f=fopen(buf,"r");
-	}
-	else
-	{
-	    printf("cat %s\n",argv[1]);
-	    f=fopen(argv[1],"r");
-	}
-    }
-    else f=stdin;
+	// Input (default stdin)
+	FILE *in=stdin;
+
+	// Output
+	FILE *out=stdout;
 
-    setvbuf(stdin,NULL,_IONBF,0);
-    setvbuf(stdout,NULL,_IONBF,0);
+	// In case a Filename was supplied
+	if(argc>1){
+		char buf[256];
 
-    char c;
+		// Relative Path
+		if(argv[1][0]!='/')
+		{
+		    sprintf(buf,"%s/%s",getenv("PWD"),argv[1]);
+		    in=fopen(buf,"r");
+		}
 
-    while(fread(&c,1,1,f))
-    {
-	printf("%c",c);
-    }
+		// Absolute Path
+		else
+		{
+		    in=fopen(argv[1],"r");
+		}
+	}
+
+	char buf[256];
+
+	while(1)
+	{
+		int l=fread(buf,1,255,in);
+		buf[l]=0;
+		if(l==0)break;
+		fwrite(buf,1,l,out);
+	}
 
-    return 0;
+	return EXIT_SUCCESS;
 }