1 files changed, 63 insertions, 0 deletions
diff --git a/src/lib/libc/stdio.c b/src/lib/libc/stdio.c
new file mode 100644
index 0000000..22be78e
--- /dev/null
+++ b/src/lib/libc/stdio.c
@@ -0,0 +1,63 @@
+#include <string.h>
+#include <stdio.h>
+
+#include <kogata/syscall.h>
+#include <kogata/printf.h>
+
+
+fd_t stdio = 1;
+
+int getchar() {
+	char chr;
+	size_t sz = read(stdio, 0, 1, &chr);
+	ASSERT(sz == 1);
+	return chr;
+}
+
+
+int putchar(int c) {
+	char chr = c;
+	write(stdio, 0, 1, &chr);
+	return 0;	//TODO what?
+}
+
+int puts(const char* s) {
+	// TODO return EOF on error
+	return write(stdio, 0, strlen(s), s);
+}
+
+void getline(char* buf, size_t l) {
+	size_t i = 0;
+	while (true) {
+		int c = getchar();
+		if (c == '\n') {
+			putchar('\n');
+			buf[i] = 0;
+			break;
+		} else if (c == '\b') {
+			if (i > 0) {
+				 i--;
+				putchar('\b');
+			}
+		} else if (c >= ' ') {
+			buf[i] = c;
+			if (i < l-1) {
+				i++;
+				putchar(c);
+			}
+		}
+	}
+}
+
+int printf(const char* fmt, ...) {
+	va_list ap;
+	char buffer[256];
+
+	va_start(ap, fmt);
+	vsnprintf(buffer, 256, fmt, ap);
+	va_end(ap);
+
+	return puts(buffer);
+}
+
+/* vim: set ts=4 sw=4 tw=0 noet :*/