Heiko Voigt <hvoigt@xxxxxxxxxx> writes:
> Since the code for cygwin and windows in general is almost the same I would
> extract one function for them where I leave in one ifdef for cygwin.
>
> E.g. like this:
>
>
> static int is_executable(const char *name)
> {
> struct stat st;
>
> if (stat(name, &st) || /* stat, not lstat */
> !S_ISREG(st.st_mode))
> return 0;
>
> fill_platform_stat(name, &st);
>
> return st.st_mode & S_IXUSR;
> }
>
> which I could then define to a no op on posix. That way we avoid code
> duplication in the platform specific functions.
>
> What do you think?
Does having the "stat()" help on Windows in any way? Does it ever
return an executable bit by itself?
If not, Windows compat/ implementation may want to skip issuing a
useless stat() and write it as
if (has_extension(".exe"))
return 1;
if (contents_begins_with("MZ") || contents_begins_with("#!"))
return 1;
return 0;
without ever talking about stat() which is POSIXism compat/
implementation for Windows does not have to worry about.
And that was the reason I suggested making the whole implementation
of path_is_executable() overridable by compat/ layer.
But if having "stat()" helps on Windows, then your counterproposal
is good enough for me.
Thanks.
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