Added strings

3 files changed, 28 insertions, 0 deletions

diff --git a/src/lib/strings.c b/src/lib/strings.c
new file mode 100644
index 0000000..8f62391
--- /dev/null
+++ b/src/lib/strings.c
@@ -0,0 +1,20 @@
+#include "../lib/strings.h"
+
+unsigned long strlen(char* s) {
+	unsigned long len = 0;
+	while (s[len] != 0) {
+		len += 1;
+	}
+	return len;
+}
+
+unsigned char strcmp(char* a, char* b) {
+	unsigned long idx = 0;
+	while (a[idx] != 0 && b[idx] != 0) {
+		if (a[idx] != b[idx]) {
+			return 0;
+		}
+		idx += 1;
+	}
+	return a[idx] == b[idx];
+}
diff --git a/src/lib/strings.h b/src/lib/strings.h
new file mode 100644
index 0000000..61dd316
--- /dev/null
+++ b/src/lib/strings.h
@@ -0,0 +1,7 @@
+#ifndef LIB_STRINGS_H
+#define LIB_STRINGS_H
+
+unsigned long strlen(char* s);
+unsigned char strcmp(char* a, char* b);
+
+#endif
diff --git a/src/sys/core.c b/src/sys/core.c
index 3bb9651..f4b0581 100644
--- a/src/sys/core.c
+++ b/src/sys/core.c
@@ -1,6 +1,7 @@
 #include "../drivers/uart.a.h"
 #include "../drivers/uart.h"
 #include "../graphics/draw.h"
+#include "../lib/strings.h"
 #include "../util/time.h"
 #include "../util/mutex.h"
 #include "../sys/core.h"