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authorMiles Bader <miles@gnu.org>1997-02-17 00:19:41 +0000
committerMiles Bader <miles@gnu.org>1997-02-17 00:19:41 +0000
commitcd8cdaf993ed63e54b94fc12b0d902cdca058cd7 (patch)
tree321ec47878bbccc49396996bba62eb238ec60abf /libshouldbeinlibc/argp-ex2.c
parent333bc1511260fff854219bf05e888611218a2f46 (diff)
Initial checkin
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+/* Argp example #2 -- a pretty minimal program using argp */
+
+/* This program doesn't use any options or arguments, but uses argp to be
+ compliant with the GNU standard command line format.
+
+ In addition to making sure no arguments are given, and implementing a
+ --help option, this example will have a --version option, and will put the
+ given documentation string and bug address in the --help output, as per
+ GNU standards.
+
+ The variable ARGP contains the argument parser specification; adding
+ fields to this structure is the way most parameters are passed to
+ argp_parse (the first three fields are usually used, but not in this small
+ program). There are also two global variables that argp knows about
+ defined here, ARGP_PROGRAM_VERSION and ARGP_PROGRAM_BUG_ADDRESS (they are
+ global variables becuase they will almost always be constant for a given
+ program, even if it uses different argument parsers for various tasks). */
+
+#include <argp.h>
+
+char *argp_program_version = "argp-ex2 1.0";
+char *argp_program_bug_address = "<bug-gnu-utils@prep.ai.mit.edu>";
+
+static char doc[] = "Argp example #2 -- a pretty minimal program using argp";
+
+static struct argp argp = { 0, 0, 0, doc };
+
+int main (int argc, char **argv)
+{
+ argp_parse (&argp, argc, argv, 0, 0, 0);
+ exit (0);
+}