From b461c3558b2fe765a4bac512638b0acf5185b4bb Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Fri, 12 Oct 2018 00:30:44 +0200
Subject: imeplemented /dev/tty and minimalistic "less"

---
 userspace/less.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 userspace/less.c

(limited to 'userspace/less.c')

diff --git a/userspace/less.c b/userspace/less.c
new file mode 100644
index 0000000..c1792ae
--- /dev/null
+++ b/userspace/less.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define VERSION "0.1"
+int main(int argc, char **argv)
+{   
+    printf("--== fool's %s - version %s ==-\n",argv[0],VERSION);
+
+    // keyboard
+    int ctrl_fd=_open("/dev/tty");
+
+    // Input (default stdin)
+    FILE *in=stdin;
+
+    // Output
+    FILE *out=stdout;
+
+    // In case a Filename was supplied (TODO: getcwd / setcwd , chdir, open realative to dir.
+    if(argc>1){
+            {
+                in=fopen(argv[1],"r");
+            }
+    }
+
+	char buf[256];
+
+        for(int i=0;i<20;i++)
+        {
+		if(fgets(buf,256,in)==NULL)return EXIT_SUCCESS;
+		fputs(buf,out);
+        }
+
+	while(1)
+	{
+		if(fgets(buf,256,in)==NULL)break;
+		fputs(buf,out);
+                _read(ctrl_fd,buf,1); // wait for any key
+	}
+
+	return EXIT_SUCCESS;
+}
-- 
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