I'd like to test to see if (1) a logfile is open and (2) capture its name.
The logfile name does not seem to be part of the creturn c() system
values although the currently used file name -c(filename) - and pwd
-c(pwd) are available.
Is there an equivalent to mata's pathsplit(path,path1,path2) command
which would be very useful for filename handling? I have found the
undocumented _getfilename which is useful for popping the filename off
the end of a path/filename string and one can then do a bit of
manipulation to get the path, filename and extension for further
manipulation.
Currently I have the following which will do the job:
// Get the filename, path and extension for the log file.
quietly log
local log = r(filename)
if "`log'" != "." {
_getfilename "`log'"
local logfile = r(filename)
local logpath = subinstr(substr("`log'",1,
length("`log'")-length("`logfile'")),"\","/",.)
gettoken nameonly extonly: logfile, parse(".")
local logstem "`logpath'""`nameonly'"
local extonly = substr(`"`extonly'"',2,.)
di in gr "`logpath'" in ye "`nameonly'" in gr "." in white "`extonly'"
}
else {
di in red "No logfile open"
}
// end excerpt
The other question I have is whether there is a way for -syntax- to
handle command lines in the form: -cmd1, options: cmd2, options- or is
it always necessary to nibble the command line apart with gettoken, or
at least to get the left and right halves into a form for syntax to
handle. If not obvious already, I am trying to create a "wrapper" for
another command(s). If one didn't want the wrapper command to have
options, one could simply use -cmd1 cmd2,options- that could be parsed
by syntax. It is the need to have the ",options" and the ":"
separator following cmd1 that causes the difficulties.
This is my first foray into writing this kind of ado and I'd
appreciate any insights or cautions from the pros. Thanks.
DCE
--
David Elliott
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