/**********************************************************/
/*  apimagic: cparser-based API normalization utility     */
/*  Copyright (C) 2015--2016  Z. Gilboa                   */
/*  Released under GPLv2 and GPLv3; see COPYING.APIMAGIC. */
/**********************************************************/

#include <stdio.h>
#include <unistd.h>
#include <apimagic/apimagic.h>
#include "apimagic_version.h"

#ifndef AMGC_DRIVER_FLAGS
#define AMGC_DRIVER_FLAGS	AMGC_DRIVER_VERBOSITY_ERRORS \
				| AMGC_DRIVER_VERBOSITY_USAGE
#endif

static const char vermsg[] = "%s (git://midipix.org/apimagic): commit %s.\n";

static ssize_t apimagic_version(struct amgc_driver_ctx * dctx)
{
	return fprintf(stdout,vermsg,dctx->program,APIMAGIC_GIT_VERSION);
}

static void apimagic_perform_unit_actions(struct amgc_unit_ctx * uctx)
{
	const struct amgc_action * action;

	for (action=uctx->cctx->actions; action->type; action++)
		switch (action->action) {
			case AMGC_OUTPUT_ENUM:
				if (action->symbol)
					(void)0;
				else
					amgc_output_unit_enums(uctx,0,stdout);
				break;

			case AMGC_LIST_ENUM:
				if (action->symbol)
					(void)0;
				else
					amgc_list_unit_enums(uctx,0,stdout);
				break;
		}
}

static int apimagic_exit(struct amgc_driver_ctx * dctx, int nerrors)
{
	amgc_free_driver_ctx(dctx);
	return nerrors ? 2 : 0;
}

int apimagic_main(int argc, const char ** argv, const char ** envp)
{
	int				ret;
	struct amgc_driver_ctx *	dctx;
	struct amgc_unit_ctx *		uctx;
	const char **			unit;

	if ((ret = amgc_get_driver_ctx(argv,envp,AMGC_DRIVER_FLAGS,&dctx)))
		return (ret == AMGC_USAGE) ? !--argc : 2;

	if (dctx->cctx->drvflags & AMGC_DRIVER_VERSION)
		if ((apimagic_version(dctx)) < 0)
			return apimagic_exit(dctx,2);

	for (unit=dctx->units; *unit; unit++) {
		if (!(amgc_get_unit_ctx(dctx,*unit,&uctx))) {
			apimagic_perform_unit_actions(uctx);
			ret += uctx->nerrors;
			amgc_free_unit_ctx(uctx);
		} else
			ret++;
	}

	return apimagic_exit(dctx,ret);
}

#ifndef APIMAGIC_IN_A_BOX

int main(int argc, const char ** argv, const char ** envp)
{
	return apimagic_main(argc,argv,envp);
}

#endif