#include <netdb.h>
#include <gnutls/gnutls.h>
#include <zlib.h>
+#include <argp.h>
+#include "config.h"
#include "decfile.h"
#include "rnet_message.h"
#include "rnet_encode.h"
+/* Program version and bug report address. */
+
+const char *argp_program_version = PACKAGE_VERSION;
+const char *argp_program_bug_address = PACKAGE_BUGREPORT;
+
+/* Documentation strings. */
+
+static const char rnetclient_doc[] =
+ "Send the Brazilian Income Tax Report to the Brazilian "
+ "Tax Authority";
+static const char rnetclient_args_doc[] =
+ "[-d|--declaration] FILE";
+
+/* Description and definition of each option accepted by the program. */
+
+static const struct argp_option rnetclient_options_desc[] = {
+ { "declaration", 'd', "FILE", OPTION_ARG_OPTIONAL,
+ "The Income Tax Report file that will be sent.",
+ 0 },
+
+ { NULL },
+};
+
+struct rnetclient_args {
+ /* File representing the declaration. */
+ char *input_file;
+};
+
+/* Parser for command line arguments. */
+
+static error_t rnetclient_parse_opt(int key, char *arg, struct argp_state *state)
+{
+ struct rnetclient_args *a = state->input;
+ switch (key) {
+ case 'd':
+ /* The user has explicitly provided a filename through
+ the '-d' switch. */
+ a->input_file = arg;
+ break;
+
+ case ARGP_KEY_ARG:
+ /* The user has possibly provided a filename without
+ using any switches (e.g., by running './rnetclient
+ file'). */
+ a->input_file = arg;
+ break;
+
+ case ARGP_KEY_END:
+ /* We have reached the end of the argument parsing.
+ Let's check if the user has provided a filename. */
+ if (a->input_file == NULL)
+ argp_error(state,
+ "You need to provide the Income Tax Declaration "
+ "filename.");
+ }
+
+ return 0;
+}
+
+/* Control struct used by argp. */
+
+static struct argp rnetclient_argp = {
+ rnetclient_options_desc,
+ rnetclient_parse_opt,
+ rnetclient_args_doc,
+ rnetclient_doc,
+ NULL, NULL, NULL
+};
+
static size_t chars2len (unsigned char buf[2]) {
return (buf[0] << 8 | buf[1]);
}
return 0;
}
-static void usage(void)
-{
- fprintf(stderr, "rnetclient [filename]\n");
- exit(1);
-}
-
static int rnet_send(gnutls_session_t session, char *buffer, size_t len, int header)
{
int r = 0;
int r;
struct rnet_decfile *decfile;
struct rnet_message *message = NULL;
+ struct rnetclient_args rnet_args;
gnutls_session_t session;
int finish = 0;
char *cpf;
-
- if (argc < 2) {
- usage();
- }
-
- decfile = rnet_decfile_open(argv[1]);
+ error_t err;
+
+ /* Parsing the command line arguments. The argp_parse
+ function calls exit() if there is some error during the
+ parsing process (e.g., the user has provided an unknown
+ flag or the parsing function has called argp_error).
+ However, if our internal parsing function returns something
+ different than zero, then argp_parse returns this value to
+ us. This is a bug, and should not happen in the current
+ state. */
+ memset(&rnet_args, 0, sizeof (rnet_args));
+ err = argp_parse (&rnetclient_argp, argc, argv, 0, NULL, &rnet_args);
+ if (err != 0)
+ fprintf(stderr, "internal error while parsing command line arguments.");
+
+ decfile = rnet_decfile_open(rnet_args.input_file);
if (!decfile) {
- fprintf(stderr, "could not parse %s: %s\n", argv[1], strerror(errno));
+ fprintf(stderr, "could not parse file \"%s\": %s\n", rnet_args.input_file, strerror(errno));
exit(1);
}