Prepended file names with "toy_"

source/toy_refstring.c

@@ -0,0 +1,98 @@
+#include "refstring.h"
+
+#include <string.h>
+#include <assert.h>
+
+//test variable sizes based on platform (safety)
+#define STATIC_ASSERT(test_for_true) static_assert((test_for_true), "(" #test_for_true ") failed")
+
+STATIC_ASSERT(sizeof(RefString) == 12);
+STATIC_ASSERT(sizeof(int) == 4);
+STATIC_ASSERT(sizeof(char) == 1);
+
+//memory allocation
+static RefStringAllocatorFn allocate;
+
+void setRefStringAllocatorFn(RefStringAllocatorFn allocator) {
+	allocate = allocator;
+}
+
+//API
+RefString* createRefString(char* cstring) {
+	int length = strnlen(cstring, 4096);
+
+	return createRefStringLength(cstring, length);
+}
+
+RefString* createRefStringLength(char* cstring, int length) {
+	//allocate the memory area (including metadata space)
+	RefString* refString = (RefString*)allocate(NULL, 0, sizeof(int) * 2 + sizeof(char) * length + 1);
+
+	//set the data
+	refString->refcount = 1;
+	refString->length = length;
+	strncpy(refString->data, cstring, refString->length);
+
+	refString->data[refString->length] = '\0'; //string terminator
+
+	return refString;
+}
+
+void deleteRefString(RefString* refString) {
+	//decrement, then check
+	refString->refcount--;
+	if (refString->refcount <= 0) {
+		allocate(refString, sizeof(int) * 2 + sizeof(char) * refString->length + 1, 0);
+	}
+}
+
+int countRefString(RefString* refString) {
+	return refString->refcount;
+}
+
+int lengthRefString(RefString* refString) {
+	return refString->length;
+}
+
+RefString* copyRefString(RefString* refString) {
+	//Cheaty McCheater Face
+	refString->refcount++;
+	return refString;
+}
+
+RefString* deepCopyRefString(RefString* refString) {
+	//create a new string, with a new refcount
+	return createRefStringLength(refString->data, refString->length);
+}
+
+char* toCString(RefString* refString) {
+	return refString->data;
+}
+
+bool equalsRefString(RefString* lhs, RefString* rhs) {
+	//same pointer
+	if (lhs == rhs) {
+		return true;
+	}
+
+	//different length
+	if (lhs->length != rhs->length) {
+		return false;
+	}
+
+	//same string
+	return strncmp(lhs->data, rhs->data, lhs->length) == 0;
+}
+
+bool equalsRefStringCString(RefString* lhs, char* cstring) {
+	//get the rhs length
+	int length = strnlen(cstring, 4096);
+
+	//different length
+	if (lhs->length != length) {
+		return false;
+	}
+
+	//same string
+	return strncmp(lhs->data, cstring, lhs->length) == 0;
+}