added:

* file: small wrap over winapi for windows and stdio for posix
 * fs: small wrapper over stat
 * slice: slice macro type
modified:
 * str and strview are now slices

file.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <stdint.h>
+#include "str.h"
+#include "strview.h"
+
+enum {
+    FILE_READ, FILE_WRITE, FILE_BOTH
+};
+
+typedef struct {
+    void *handle;
+} file_t;
+
+file_t fileOpen(const char *fname, int mode);
+void fileClose(file_t *ctx);
+
+bool fileIsValid(file_t *ctx);
+
+bool filePutc(file_t *ctx, char c);
+bool filePuts(file_t *ctx, const char *str);
+bool filePutstr(file_t *ctx, str_t str);
+bool filePutview(file_t *ctx, strview_t view);
+
+size_t fileRead(file_t *ctx, void *buf, size_t len);
+size_t fileWrite(file_t *ctx, const void *buf, size_t len);
+
+bool fileSeekEnd(file_t *ctx);
+void fileRewind(file_t *ctx);
+
+uint64_t fileTell(file_t *ctx);