From 41a4f5309ef298da764bf1dca1254e734a4417f0 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Fri, 13 Mar 2015 15:37:30 +0100
Subject: Basis for a shell.

---
 src/lib/libkogata/stdio.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/lib/libkogata/stdio.c

(limited to 'src/lib/libkogata/stdio.c')

diff --git a/src/lib/libkogata/stdio.c b/src/lib/libkogata/stdio.c
new file mode 100644
index 0000000..1c298ad
--- /dev/null
+++ b/src/lib/libkogata/stdio.c
@@ -0,0 +1,66 @@
+#include <syscall.h>
+
+#include <printf.h>
+#include <stdio.h>
+
+
+fd_t stdio = 1;
+
+int getc() {
+	sel_fd_t fd;
+	fd.fd = stdio;
+	fd.req_flags = SEL_READ;
+	ASSERT(select(&fd, 1, -1));
+	ASSERT(fd.got_flags & SEL_READ);
+
+	char chr;
+	size_t sz = read(stdio, 0, 1, &chr);
+	ASSERT(sz == 1);
+	return chr;
+}
+
+
+void putc(int c) {
+	char chr = c;
+	write(stdio, 0, 1, &chr);
+}
+
+void puts(char* s) {
+	while (*s) putc(*(s++));
+}
+
+void getline(char* buf, size_t l) {
+	size_t i = 0;
+	while (true) {
+		int c = getc();
+		if (c == '\n') {
+			putc('\n');
+			buf[i] = 0;
+			break;
+		} else if (c == '\b') {
+			if (i > 0) {
+				 i--;
+				putc('\b');
+			}
+		} else if (c >= ' ') {
+			buf[i] = c;
+			if (i < l-1) {
+				i++;
+				putc(c);
+			}
+		}
+	}
+}
+
+void printf(char* fmt, ...) {
+	va_list ap;
+	char buffer[256];
+
+	va_start(ap, fmt);
+	vsnprintf(buffer, 256, fmt, ap);
+	va_end(ap);
+
+	puts(buffer);
+}
+
+/* vim: set ts=4 sw=4 tw=0 noet :*/
-- 
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