Move cpath to os

src/os/cpath/cpath.h

@@ -0,0 +1,32 @@
+#ifndef CPATH_H
+#define CPATH_H
+
+#include "aliases.h"
+#include "platform.h"
+
+#ifdef __cplusplus
+BEGIN_C_LINKAGE
+#endif // __cplusplus
+
+#ifdef WAPP_PLATFORM_POSIX
+#define PATH_SEP '/'
+#elif defined(WAPP_PLATFORM_WINDOWS)
+#define PATH_SEP '\\'
+#else
+#error "Unrecognised platform"
+#endif
+
+#define NUMPARTS(...) (sizeof((const char *[]){"", __VA_ARGS__}) / sizeof(const char *) - 1)
+
+#define wapp_cpath_join_path(DST, ...) join_path(DST, NUMPARTS(__VA_ARGS__), __VA_ARGS__)
+#define wapp_cpath_dirname(DST, PATH) dirup(DST, 1, PATH)
+#define wapp_cpath_dirup(DST, COUNT, PATH) dirup(DST, COUNT, PATH)
+
+void join_path(char *dst, u64 count, ...);
+void dirup(char *dst, u64 levels, const char *path);
+
+#ifdef __cplusplus
+END_C_LINKAGE
+#endif // __cplusplus
+
+#endif // !CPATH_H