From f4f5f027f29318b4e878d15342389da50c7c5e68 Mon Sep 17 00:00:00 2001
From: Lauchmelder <robert.trololo@gmail.com>
Date: Thu, 20 Jan 2022 13:06:34 +0100
Subject: [PATCH] clippy command works
---
include/string.h | 3 +++
src/kernel.c | 15 ++++++++-------
src/string.c | 12 ++++++++++++
3 files changed, 23 insertions(+), 7 deletions(-)
create mode 100644 include/string.h
create mode 100644 src/string.c
diff --git a/include/string.h b/include/string.h
new file mode 100644
index 0000000..eba99dd
--- /dev/null
+++ b/include/string.h
@@ -0,0 +1,3 @@
+#pragma once
+
+int strcmp(const char* str1, const char* str2);
\ No newline at end of file
diff --git a/src/kernel.c b/src/kernel.c
index de1d5ab..bc9fd97 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -1,5 +1,6 @@
#include "io.h"
#include "convert.h"
+#include "string.h"
void print_clippy();
@@ -24,19 +25,19 @@ void main()
{
uart_puts("\n\nPlease enter first operand\n");
uart_puts("📎 ");
- int a = stoi(uart_gets(buffer));
-
- uart_puts("\nPlease enter second operand\n");
- uart_puts("📎 ");
uart_gets(buffer);
-
- if(buffer == "clippy")
+
+ if(!strcmp(buffer, "clippy"))
{
print_clippy();
continue;
}
- int b = stoi(buffer);
+ int a = stoi(buffer);
+
+ uart_puts("\nPlease enter second operand\n");
+ uart_puts("📎 ");
+ int b = stoi(uart_gets(buffer));
uart_puts("\n");
uart_puts(itoa(a, buffer));
diff --git a/src/string.c b/src/string.c
new file mode 100644
index 0000000..3b4c903
--- /dev/null
+++ b/src/string.c
@@ -0,0 +1,12 @@
+#include "string.h"
+
+int strcmp(const char* str1, const char* str2)
+{
+ while(*str1)
+ {
+ int diff = *str1++ - *str2++;
+ if(diff) return diff;
+ }
+
+ return 0;
+}
\ No newline at end of file