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retro_vfs_file_open_impl - avoid two strlens at start

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This commit is contained in:
twinaphex 2020-06-24 20:17:09 +02:00
parent b846599cc7
commit 472bb775ee
1 changed files with 25 additions and 28 deletions
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53
libretro-common/vfs/vfs_implementation.c
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@ -262,47 +262,44 @@ int64_t retro_vfs_file_seek_internal(libretro_vfs_implementation_file *stream, i
libretro_vfs_implementation_file *retro_vfs_file_open_impl(
const char *path, unsigned mode, unsigned hints)
{
int flags = 0;
const char *mode_str = NULL;
libretro_vfs_implementation_file *stream = (libretro_vfs_implementation_file*)
calloc(1, sizeof(*stream));
#if defined(VFS_FRONTEND) || defined(HAVE_CDROM)
int path_len = (int)strlen(path);
#endif
#ifdef VFS_FRONTEND
const char *dumb_prefix = "vfsonly://";
size_t dumb_prefix_siz = strlen(dumb_prefix);
size_t dumb_prefix_siz = STRLEN_CONST(dumb_prefix);
int dumb_prefix_len = (int)dumb_prefix_siz;
if (path_len >= dumb_prefix_len)
{
if (!memcmp(path, dumb_prefix, dumb_prefix_len))
path += dumb_prefix_siz;
}
#endif
#ifdef HAVE_CDROM
{
const char *cdrom_prefix = "cdrom://";
size_t cdrom_prefix_siz = strlen(cdrom_prefix);
int cdrom_prefix_len = (int)cdrom_prefix_siz;
if (path_len > cdrom_prefix_len)
{
if (!memcmp(path, cdrom_prefix, cdrom_prefix_len))
{
path += cdrom_prefix_siz;
stream->scheme = VFS_SCHEME_CDROM;
}
}
}
const char *cdrom_prefix = "cdrom://";
size_t cdrom_prefix_siz = STRLEN_CONST(cdrom_prefix);
int cdrom_prefix_len = (int)cdrom_prefix_siz;
#endif
int flags = 0;
const char *mode_str = NULL;
libretro_vfs_implementation_file *stream =
(libretro_vfs_implementation_file*)
calloc(1, sizeof(*stream));
if (!stream)
return NULL;
(void)flags;
#ifdef VFS_FRONTEND
if (path_len >= dumb_prefix_len)
if (!memcmp(path, dumb_prefix, dumb_prefix_len))
path += dumb_prefix_siz;
#endif
#ifdef HAVE_CDROM
if (path_len > cdrom_prefix_len)
{
if (!memcmp(path, cdrom_prefix, cdrom_prefix_len))
{
path += cdrom_prefix_siz;
stream->scheme = VFS_SCHEME_CDROM;
}
}
#endif
stream->hints = hints;
stream->orig_path = strdup(path);