On 9/10/2018 6:00 PM, Junio C Hamano wrote:
Johannes Sixt <j6t@xxxxxxxx> writes:
+#define IS_SBS(ch) (((ch) == '/') || ((ch) == '\\'))
I think you already have mingw_is_dir_sep() and its shorter alias
is_dir_sep() available to you.
good catch. thanks.
+/*
+ * Does the pathname map to the local named pipe filesystem?
+ * That is, does it have a "//./pipe/" prefix?
+ */
+static int mingw_is_local_named_pipe_path(const char *filename)
There is no need to prefix mingw_ to this function that is file
local static. Isn't is_local_named_pipe() descriptive and unique
enough?
right. will do.
+{
+ return (IS_SBS(filename[0]) &&
+ IS_SBS(filename[1]) &&
+ filename[2] == '.' &&
+ IS_SBS(filename[3]) &&
+ !strncasecmp(filename+4, "pipe", 4) &&
+ IS_SBS(filename[8]) &&
+ filename[9]);
+}
+#undef IS_SBS
It is kind-of surprising that there hasn't been any existing need
for a helper function that would allow us to write this function
like so:
static int is_local_named_pipe(const char *path)
{
return path_is_in_directory(path, "//./pipe/");
}
Not a suggestion to add such a thing; as long as we know there is no
other codepath that would benefit from having one, a generalization
like that can and should wait.
Yeah, I don't think we need something that general just yet. Named
pipes exist in a special namespace using the UNC/network-share syntax
(rather than the DOS drive-letter syntax), and we don't do much with
UNC paths yet.
Perhaps, later we could have something to try splitting a UNC
path into <server>, <volume>, and <relative-path> and then have
is_local_named_pipe() verify the first 2 are as expected.
Or have a function like is_path_in_volume(path, server, volume)
that does the tests without cutting up strings and allocating.
We could do either, but I don't think we need to be that general
yet.
Thanks,
Jeff
