core: Add a high level option/argument parser.

* gpg-error.h.in (GPGRT_CONFDIR_USER, GPGRT_CONFDIR_SYS): New consts.
(ARGPARSE_FLAG_SYS, ARGPARSE_FLAG_USER, ARGPARSE_FLAG_VERBOSE)
(ARGPARSE_NO_CONFFILE, ARGPARSE_CONFFILE, ARGPARSE_OPT_CONFFILE): New
consts.
(ARGPARSE_conffile, ARGPARSE_noconffile): New macros.
(gpgrt_set_confdir): New func.
(gpgrt_argparser): New func.
* src/argparse.c (confdir): New var.
(enum argparser_states): New.
(struct _gpgrt_argparse_internal_s): Add a couple of new fields.
(initialize): Init them.
(any_opt_conffile): New.
(_gpgrt_argparser): New.
(_gpgrt_set_confdir): New.
* src/visibility.c (gpgrt_argparser): New.
(gpgrt_set_confdir): New.
* src/gpg-error.def.in, src/gpg-error.vers: Add those functions.
* tests/t-argparse.c (main): Reworked.
* tests/etc/t-argparse.conf: New file.
* tests/t-argparse.conf: New file.
--

gpgrt_argparser is a high level version of gpgrt_argparse.  It handles
reading of configuration files internally and allows allows for a
global configuration file.  The design is so that it minimizes the
work to replace the existing option parsing in gpg and friends by this
one and to allow global configuration files for them.

This is the just the basic code which should allow replacement of the
parsers.  A forthcoming patch will implement flags for options given
in the global config file.

GnuPG-bug-id: 4788
Signed-off-by: Werner Koch <[email protected]>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/visibility.c b/src/visibility.c
index 5f88aad..ea55d54 100644
--- a/src/visibility.c
+++ b/src/visibility.c
@@ -1139,6 +1139,12 @@ gpgrt_argparse (estream_t fp, gpgrt_argparse_t *arg, gpgrt_opt_t *opts)
   return _gpgrt_argparse (fp, arg, opts);
 }
 
+int
+gpgrt_argparser (gpgrt_argparse_t *arg, gpgrt_opt_t *opts, const char *name)
+{
+  return _gpgrt_argparser (arg, opts, name);
+}
+
 void
 gpgrt_usage (int level)
 {
@@ -1169,6 +1175,12 @@ gpgrt_set_fixed_string_mapper (const char *(*f)(const char*))
   _gpgrt_set_fixed_string_mapper (f);
 }
 
+void
+gpgrt_set_confdir (int what, const char *name)
+{
+  _gpgrt_set_confdir (what, name);
+}
+
 
 
 /* Compare program versions.  */