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implement skeleton of program

#include "global.h"
#include "aitcfg.h"


cfg_root_t cfg;
char cfgname[MAXPATHLEN], section[STRSIZ];


static void
Usage(const char *prog)
{
	printf(	" -= CFGPROG =- ELWIX config tool ver.%s\n"
		"(C)`25 by Michael Pounov <misho@elwix.org>\n"
		"==========================================\n"
		" Syntax: %s [-options] <config> [attribute] [value]\n\n"
		"\t-s <section>\tScope of attribute\n"
		"\t-w\t\tSet and write attribute\n"
		"\t-v\t\tVerbose, more -v more verbosity\n"
		"\t-h\t\tHelp, this help screen!\n", 
		PACKAGE_VERSION, prog);
}

int
Get(const char *prog, int argc, char **argv)
{
	EVERBS(1) printf("Get value for %s in scope %s from config %s\n", 
			*argv ? *argv : "*", section, prog);

	return 0;
}

int
Set(const char *prog, int argc, char **argv)
{
	if (argc < 2) {
		printf("Error:: missing attribute and value arguments!\n");
		return 1;
	}

	EVERBS(1) printf("Set value %s for %s in scope %s from config %s\n", 
			argv[1], argv[0], section, prog);

	return 0;
}


int
main(int argc, char **argv)
{
	int ch;
	int (*run)(const char*, int, char**) = Get;
	const char *prog;
	char *str;

	if (!argv || !*argv)
		prog = "cfgprog";
	else if (!(prog = strrchr(*argv, '/')))
		prog = *argv;
	else
		prog++;

	while ((ch = getopt(argc, argv, "hvws:")) != -1)
		switch (ch) {
			case 'w':
				run = Set;
				break;
			case 's':
				strlcpy(section, optarg, sizeof section);
				break;
			case 'v':
				e_incVerbose;
				break;
			default:
				Usage(prog);
				return 1;
		}
	argc -= optind;
	argv += optind;

	if (!strcmp(prog, "cfg_set"))
		run = Set;
	else if (!strcmp(prog, "cfg_get"))
		run = Get;

	if (!argc) {
		printf("Error:: missing config name!\n");
		Usage(prog);
		return 1;
	} else {
		strlcpy(cfgname, *argv, sizeof cfgname);
		argc--;
		argv++;
	}

	if (argc && *argv && (str = strchr(*argv, '/'))) {
		*str++ = 0;
		strlcpy(section, *argv, sizeof section);
		*argv = str;
	}

	return run(prog, argc, argv);
}