1 files changed, 71 insertions, 21 deletions

diff --git a/src/zix/common.h b/src/zix/common.h
index 51683c4..d47586c 100644
--- a/src/zix/common.h
+++ b/src/zix/common.h
@@ -1,5 +1,5 @@
 /*
-  Copyright 2016 David Robillard <d@drobilla.net>
+  Copyright 2016-2020 David Robillard <d@drobilla.net>
 
   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
@@ -17,39 +17,65 @@
 #ifndef ZIX_COMMON_H
 #define ZIX_COMMON_H
 
+#include <stdbool.h>
+
 /**
    @addtogroup zix
    @{
 */
 
 /** @cond */
-#ifdef ZIX_SHARED
-#  ifdef _WIN32
-#    define ZIX_LIB_IMPORT __declspec(dllimport)
-#    define ZIX_LIB_EXPORT __declspec(dllexport)
-#  else
-#    define ZIX_LIB_IMPORT __attribute__((visibility("default")))
-#    define ZIX_LIB_EXPORT __attribute__((visibility("default")))
-#  endif
-#  ifdef ZIX_INTERNAL
-#    define ZIX_API ZIX_LIB_EXPORT
-#  else
-#    define ZIX_API ZIX_LIB_IMPORT
-#  endif
-#  define ZIX_PRIVATE static
-#elif defined(ZIX_INLINE)
-#  define ZIX_API static inline
-#  define ZIX_PRIVATE static inline
+#if defined(_WIN32) && !defined(ZIX_STATIC) && defined(ZIX_INTERNAL)
+#  define ZIX_API __declspec(dllexport)
+#elif defined(_WIN32) && !defined(ZIX_STATIC)
+#  define ZIX_API __declspec(dllimport)
+#elif defined(__GNUC__)
+#  define ZIX_API __attribute__((visibility("default")))
 #else
 #  define ZIX_API
-#  define ZIX_PRIVATE static
 #endif
+
+#ifdef __GNUC__
+#  define ZIX_PURE_FUNC __attribute__((pure))
+#  define ZIX_CONST_FUNC __attribute__((const))
+#  define ZIX_MALLOC_FUNC __attribute__((malloc))
+#else
+#  define ZIX_PURE_FUNC
+#  define ZIX_CONST_FUNC
+#  define ZIX_MALLOC_FUNC
+#endif
+
+#define ZIX_PURE_API \
+  ZIX_API            \
+  ZIX_PURE_FUNC
+
+#define ZIX_CONST_API \
+  ZIX_API             \
+  ZIX_CONST_FUNC
+
+#define ZIX_MALLOC_API \
+  ZIX_API              \
+  ZIX_MALLOC_FUNC
+
 /** @endcond */
 
 #ifdef __cplusplus
 extern "C" {
+#endif
+
+#ifdef __GNUC__
+#  define ZIX_LOG_FUNC(fmt, arg1) __attribute__((format(printf, fmt, arg1)))
 #else
-#  include <stdbool.h>
+#  define ZIX_LOG_FUNC(fmt, arg1)
+#endif
+
+// Unused parameter macro to suppresses warnings and make it impossible to use
+#if defined(__cplusplus)
+#  define ZIX_UNUSED(name)
+#elif defined(__GNUC__)
+#  define ZIX_UNUSED(name) name##_unused __attribute__((__unused__))
+#else
+#  define ZIX_UNUSED(name) name
 #endif
 
 typedef enum {
@@ -62,10 +88,34 @@ typedef enum {
   ZIX_STATUS_BAD_PERMS
 } ZixStatus;
 
+static inline const char*
+zix_strerror(const ZixStatus status)
+{
+  switch (status) {
+  case ZIX_STATUS_SUCCESS:
+    return "Success";
+  case ZIX_STATUS_ERROR:
+    return "Unknown error";
+  case ZIX_STATUS_NO_MEM:
+    return "Out of memory";
+  case ZIX_STATUS_NOT_FOUND:
+    return "Not found";
+  case ZIX_STATUS_EXISTS:
+    return "Exists";
+  case ZIX_STATUS_BAD_ARG:
+    return "Bad argument";
+  case ZIX_STATUS_BAD_PERMS:
+    return "Bad permissions";
+  }
+  return "Unknown error";
+}
+
 /**
    Function for comparing two elements.
 */
-typedef int (*ZixComparator)(const void* a, const void* b, void* user_data);
+typedef int (*ZixComparator)(const void* a,
+                             const void* b,
+                             const void* user_data);
 
 /**
    Function for testing equality of two elements.