Update to latest libroot (commit 102348f) (#95)

opa334/libroot@102348f

Author: leptos-null

libroot/libroot.h

@@ -2,32 +2,69 @@
 
 __BEGIN_DECLS
 
+_Pragma("GCC visibility push(hidden)")
+
 const char *_Nonnull libroot_dyn_get_root_prefix(void);
 const char *_Nonnull libroot_dyn_get_jbroot_prefix(void);
 const char *_Nonnull libroot_dyn_get_boot_uuid(void);
 char *_Nullable libroot_dyn_rootfspath(const char *_Nullable path, char *_Nullable resolvedPath);
 char *_Nullable libroot_dyn_jbrootpath(const char *_Nullable path, char *_Nullable resolvedPath);
 
+_Pragma("GCC visibility pop")
+
 __END_DECLS
 
+#define __CONVERT_PATH_CSTRING(converter, path) ({ \
+	static char outPath[PATH_MAX]; \
+	converter(path, outPath); \
+})
+
+#define JBROOT_PATH_CSTRING(path) __CONVERT_PATH_CSTRING(libroot_dyn_jbrootpath, path)
+#define ROOTFS_PATH_CSTRING(path) __CONVERT_PATH_CSTRING(libroot_dyn_rootfspath, path)
+
+#if __has_attribute(overloadable)
+__attribute__((__overloadable__))
+static inline const char *_Nullable __libroot_convert_path(char *_Nullable (*_Nonnull converter)(const char *_Nonnull, char *_Nullable), const char *_Nullable path, char *_Nonnull buf) {
+	return converter(path, buf);
+}
+#endif /* __has_attribute(overloadable) */
+
 #ifdef __OBJC__
 
+#import <Foundation/Foundation.h>
+
 #define __CONVERT_PATH_NSSTRING(converter, path) ({ \
 	char tmpBuf[PATH_MAX]; \
-	[NSString stringWithUTF8String:converter(path.fileSystemRepresentation, tmpBuf)]; \
+	const char *converted = converter(path.fileSystemRepresentation, tmpBuf); \
+	converted ? [NSString stringWithUTF8String:converted] : nil; \
 })
 
 #define JBROOT_PATH_NSSTRING(path) __CONVERT_PATH_NSSTRING(libroot_dyn_jbrootpath, path)
 #define ROOTFS_PATH_NSSTRING(path) __CONVERT_PATH_NSSTRING(libroot_dyn_rootfspath, path)
 
+#if __has_attribute(overloadable)
+__attribute__((__overloadable__))
+static inline NSString *_Nullable __libroot_convert_path(char *_Nullable (*_Nonnull converter)(const char *_Nonnull, char *_Nullable), NSString *_Nullable path, void *_Nullable const __unused buf) {
+	return __CONVERT_PATH_NSSTRING(converter, path);
+}
+#endif /* __has_attribute(overloadable) */
+
 #endif /* __OBJC__ */
 
-#define __CONVERT_PATH_CSTRING(converter, path) ({ \
-	static char outPath[PATH_MAX]; \
-	converter(path, outPath); \
-})
+#if __has_attribute(overloadable)
 
-#define JBROOT_PATH_CSTRING(path) __CONVERT_PATH_CSTRING(libroot_dyn_jbrootpath, path)
-#define ROOTFS_PATH_CSTRING(path) __CONVERT_PATH_CSTRING(libroot_dyn_rootfspath, path)
+#define __BUFFER_FOR_CHAR_P(x) \
+	__builtin_choose_expr(										\
+		__builtin_types_compatible_p(__typeof__(*(x)), char),	\
+		({ static char buf[PATH_MAX]; buf; }),					\
+		NULL													\
+	)
+
+#	define JBROOT_PATH(path) __libroot_convert_path(libroot_dyn_jbrootpath, (path), __BUFFER_FOR_CHAR_P(path))
+#	define ROOTFS_PATH(path) __libroot_convert_path(libroot_dyn_rootfspath, (path), __BUFFER_FOR_CHAR_P(path))
+#else
+#	define JBROOT_PATH(path) _Pragma("GCC error \"JBROOT_PATH is not supported with this compiler, use JBROOT_PATH_CSTRING or JBROOT_PATH_NSSTRING\"") path
+#	define ROOTFS_PATH(path) _Pragma("GCC error \"ROOTFS_PATH is not supported with this compiler, use ROOTFS_PATH_CSTRING or ROOTFS_PATH_NSSTRING\"") path
+#endif /* __has_attribute(overloadable) */
 
 #define JBRAND libroot_dyn_get_boot_uuid()