On Nov 29, 2007 12:23 AM, Charles E Campbell Jr
<[EMAIL PROTECTED]> wrote:
>
> Hello!
>
> I don't see any way to encrypt/decrypt strings in the vim function
> library, but there is a way to encrypt a file buffer. Netrw tries to
> make use of ftp, etc and its associated passwords simpler by retaining
> the password in a variable (which is not normally saved). Thus one
> reads a file via ftp, say, provides the password to do so, and writing
> is done without requiring another entry of the password. I thought
> about making a temporary "password" automatically using localtime() at
> first invocation of netrw and the process's pid. Any good way to get
> the vim process's pid? How about under Windows?
On unixes that have /proc, you can get pid of vim examining
/proc/self.
On another note, if all you need is some pseudorandom number,
you can try extract all digits from tempname(). Supposed to
be relatively unique.
In my linux, :echo libcallnr("libc.so.6", "getpid", "")
prints pid of vim. Surprisingly, libcallnr("libc.so", "getpid", "")
doesn't. On some older linux, that would be libc.so.5 etc.
Doing small loop for N and checking existance of
/usr/lib/libc.so.N might help. On some other unixes,
libcallnr("libc.so", "getpid", "") would actually work; to make it work
for may unixes, you could trap the error and resort /usr/lib/libc.so.N.
On windows, somebody should know name of the library and
name of the function for correct libcallnr() call.
However, if you need several unique/random bytes, the best
way on unix is to read /dev/urandom if it exists.
Yakov
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