/***********************************************************/

/*  ntux: native translation und extension                 */

/*  Copyright (C) 2016--2018  Z. Gilboa                    */

/*  Released under GPLv2 and GPLv3; see COPYING.NTUX.      */

/***********************************************************/

#include <stdio.h>

#include <unistd.h>

#include <ntux/ntux.h>

#include "ntux_dprintf_impl.h"

#include "ntux_driver_impl.h"

#include "ntux_nolibc_impl.h"

#ifndef NTUX_DRIVER_FLAGS

#define NTUX_DRIVER_FLAGS	NTUX_DRIVER_VERBOSITY_ERRORS \

				| NTUX_DRIVER_VERBOSITY_USAGE

#endif

static const char vermsg[] = "%s%s%s (git://midipix.org/ntux): "

			     "version %s%d.%d.%d%s.\n"

			     "[commit reference: %s%s%s]\n";

static const char * const ntux_ver_color[6] = {

		"\x1b[1m\x1b[35m","\x1b[0m",

		"\x1b[1m\x1b[32m","\x1b[0m",

		"\x1b[1m\x1b[34m","\x1b[0m"

};

static const char * const ntux_ver_plain[6] = {

		"","",

		"","",

		"",""

};

static ssize_t ntux_version(struct ntux_driver_ctx * dctx, int fdout)

{

	const struct ntux_source_version * verinfo;

	const char * const * verclr;

	verinfo = ntux_source_version();

	verclr  = isatty(fdout) ? ntux_ver_color : ntux_ver_plain;

	return ntux_dprintf(

			fdout,vermsg,

			verclr[0],dctx->program,verclr[1],

			verclr[2],verinfo->major,verinfo->minor,

			verinfo->revision,verclr[3],

			verclr[4],verinfo->commit,verclr[5]);

}

static void ntux_perform_unit_actions(

	const struct ntux_driver_ctx *	dctx,

	const char *			unit)

{

	if (dctx->cctx->cmd == NTUX_CMD_STAT)

		ntux_cmd_stat(dctx,unit);

}

static int ntux_exit(struct ntux_driver_ctx * dctx, int ret)

{

	ntux_output_error_vector(dctx);

	ntux_free_driver_ctx(dctx);

	return ret;

}

int ntux_main(char ** argv, char ** envp, const struct ntux_fd_ctx * fdctx)

{

	int				ret;

	int				fdout;

	uint64_t			flags;

	struct ntux_driver_ctx *	dctx;

	const char **			unit;

	flags = NTUX_DRIVER_FLAGS;

	fdout = fdctx ? fdctx->fdout : STDOUT_FILENO;

	if ((ret = ntux_get_driver_ctx(argv,envp,flags,fdctx,&dctx)))

		return (ret == NTUX_USAGE)

			? !argv || !argv[0] || !argv[1]

			: NTUX_ERROR;

	if (dctx->cctx->drvflags & NTUX_DRIVER_VERSION)

		if ((ntux_version(dctx,fdout)) < 0)

			return ntux_exit(dctx,NTUX_ERROR);

	if (dctx->cctx->cmd == NTUX_CMD_SPAWN)

		ntux_cmd_spawn(dctx);

	if (dctx->cctx->cmd == NTUX_CMD_STRACE)

		ntux_cmd_strace(dctx);

	for (unit=dctx->units; *unit; unit++)

		ntux_perform_unit_actions(dctx,*unit);

	return ntux_exit(dctx,dctx->errv[0] ? NTUX_ERROR : NTUX_OK);

}