Fix g_stat() for 64bit windows/mingw64

[ardour.git] / libs / pbd / pbd / gstdio_compat.h

diff --git a/libs/pbd/pbd/gstdio_compat.h b/libs/pbd/pbd/gstdio_compat.h
index 743081539a71d5dceaf11aef33593023075f698b..1f48641ee3baa5bb423f9b46ad69208c79a185da 100644 (file)
--- a/libs/pbd/pbd/gstdio_compat.h
+++ b/libs/pbd/pbd/gstdio_compat.h
@@ -25,4 +25,45 @@ pbd_g_stat(const gchar *filename, GStatBufW32 *buf)
 #  define g_lstat pbd_g_stat
 #endif
 
+/* 64bit mingw -- use _mingw_stat64.h
+ *
+ * glib-2.42.0 wrongly uses _wstat() with 'struct stat' (only MSVC is special cased),
+ * while the windows API is
+ *   int _wstat(const wchar_t*, struct _stat*)
+ * note that  struct _stat != struct stat;
+ */
+#if defined(_WIN32) && !defined(_MSC_VER) && defined(_WIN64)
+#include <windows.h>
+#include <errno.h>
+#include <wchar.h>
+
+typedef struct _stat GStatBufW64;
+static inline int
+pbd_g_stat(const gchar* filename, GStatBufW64* buf)
+{
+       gunichar2* wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
+       if (wfilename == NULL) {
+               errno = EINVAL;
+               return -1;
+       }
+
+       int len = wcslen ((wchar_t*)wfilename);
+       while (len > 0 && G_IS_DIR_SEPARATOR (wfilename[len-1])) {
+               --len;
+       }
+       if (len > 0 && (!g_path_is_absolute (filename) || len > g_path_skip_root (filename) - filename)) {
+               wfilename[len] = '\0';
+       }
+
+       int retval = _wstat ((wchar_t*)wfilename, buf);
+       int save_errno = errno;
+       g_free (wfilename);
+       errno = save_errno;
+       return retval;
+}
+#  define GStatBuf GStatBufW64
+#  define g_stat pbd_g_stat
+#  define g_lstat pbd_g_stat
+#endif
+
 #endif /* __pbd_gstdio_compat_h__ */