On Apr 16, 6:03 pm, "Aaron Gray" <ang.use...@gma il.comwrote:
QUOTE
19.31: How can my program discover the complete pathname to the
executable from which it was invoked?
I don't ... last time I was doing full on C programming, in the
mid-90's, it was all in PowerC from Mix, in DOS, for my own use, so I
was working in my own filesystem I had specified.
Maybe someone on comp.lang.c does? Follow-up reset to comp.lang.c
"BruceMcF" <agil...@netsca pe.netwrote in message
news:03b6d6f6-f06c-4e53-bd09-ec1af3ed7d1f@b6 4g2000hsa.googl egroups.com...
On Apr 15, 9:19 pm, "Aaron Gray" <ang.use...@gma il.comwrote:
Ah, is there a function that searches the path for an executable and
returns
its path ?
returns
its path ?
Not a C Standard Library function ... that's outside the scope of the
standard. As I understand it, this is something that Unixen and
Windows handle differently. You may require a wrapper routine and an
OS specific definition of that wrapper routine to extract the
information.
standard. As I understand it, this is something that Unixen and
Windows handle differently. You may require a wrapper routine and an
OS specific definition of that wrapper routine to extract the
information.
This is, it turns out, a comp.lang.c FAQ:
QUOTE
19.31: How can my program discover the complete pathname to the
executable from which it was invoked?
A: argv[0] may contain all or part of the pathname. You may be
able to duplicate the command language interpreter's search path
logic to locate the executable.
UNQUOTE
able to duplicate the command language interpreter's search path
logic to locate the executable.
UNQUOTE
In a system where argv[0] always contains the absolute pathname, the
wrapper would just parse argv[0].
wrapper would just parse argv[0].
In a system where argv[0] contains a filespec that might have been
used in combination with the path to find the file, then first check
if the argv[0] has an absolute path, and if not, try passing that
filespec to the path searching function. There normally will be a path
searching function in dir.h for, say, a Windows system, which can be
pressed into service.
used in combination with the path to find the file, then first check
if the argv[0] has an absolute path, and if not, try passing that
filespec to the path searching function. There normally will be a path
searching function in dir.h for, say, a Windows system, which can be
pressed into service.
... argv[0] holding the absolute pathname and filename is, of course,
more secure, but the MS-DOS legacy includes a lot of stuff that is a
bit slapdash.
more secure, but the MS-DOS legacy includes a lot of stuff that is a
bit slapdash.
Great, what an oversite :(
Anyone got any code for this ?
Anyone got any code for this ?
mid-90's, it was all in PowerC from Mix, in DOS, for my own use, so I
was working in my own filesystem I had specified.
Maybe someone on comp.lang.c does? Follow-up reset to comp.lang.c