Implement kstd::CString::copy()

Clean up the rest of the CString stuff

src/kstd/CString.cc

@@ -12,15 +12,30 @@
 namespace kstd {
 namespace CString {
 
-size_t
-length(char *str)
+usize
+length(char* str)
 {
-    size_t i;
-    for (i = 0; str[i] != '\0'; i++) { }
+    usize i;
+    for (i = 0; str[i] != '\0'; i++);
     return i;
 }
 
 
+char*
+copy(char* dst,
+     const char* src,
+     usize length)
+{
+    for (usize i = 0; i < length; i++) {
+        dst[i] = src[i];
+        if (src[i] == '\0') {
+            break;
+        }
+    }
+    return dst;
+}
+
+
 void
 uppercase(char *str)
 {
@@ -31,5 +46,27 @@ uppercase(char *str)
     }
 }
 
+/*
+ * Converters
+ */
+
+char*
+fromInteger(int value,
+            char* str,
+            usize length)
+{
+    return 0;
+}
+
+
+char*
+fromBool(bool value,
+         char* str,
+         usize length)
+{
+    copy(str, value ? "true" : "false", length);
+    return str;
+}
+
 } /* namespace CString */
 } /* namespace kernel */

src/kstd/CString.hh

@@ -6,16 +6,31 @@
  * Utilities for dealing with C strings.
  */
 
-#include <stddef.h>
+#include "Types.hh"
 
 namespace kstd {
 namespace CString {
 
 /** Find the length of a C string. */
-size_t length(char *str);
+usize length(char *str);
+
+/** Copy a string. */
+char* copy(char* dst, const char* src, usize length);
 
 /** Destructively convert an ASCII C String to uppercase. */
 void uppercase(char *str);
 
+/**
+ * @defgroup To-String Converters
+ */
+
+/** Convert an integer to a string. */
+char* fromInteger(int value, char *str, usize length);
+
+/** Convert a bool to a string. */
+char* fromBool(bool value, char *str, usize length);
+
+/** @} */
+
 } /* namespace CString */
 } /* namespace kstd */