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/******************************************************************************
* Copyright (C) 2018 Alejandro Colomar Andrés *
* SPDX-License-Identifier: GPL-2.0-only *
******************************************************************************/
/******************************************************************************
******* headers **************************************************************
******************************************************************************/
#include "coins/parse.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <sys/stat.h>
#include "libalx/base/errno/error.h"
#include "libalx/base/stdio/printf/snprintfs.h"
/******************************************************************************
******* macros ***************************************************************
******************************************************************************/
#define PROG_NAME "coins"
#define PROG_YEAR "2018"
#define OPT_LIST "hLuv""f:"
#define SHARE_DIR "" INSTALL_SHARE_DIR "/coins/"
#define SHARE_COPYRIGHT_FILE "" SHARE_DIR "/COPYRIGHT.txt"
#define SHARE_HELP_FILE "" SHARE_DIR "/HELP.txt"
#define SHARE_LICENSE_FILE "" SHARE_DIR "/LICENSE.txt"
#define SHARE_USAGE_FILE "" SHARE_DIR "/USAGE.txt"
/******************************************************************************
******* enum *****************************************************************
******************************************************************************/
/******************************************************************************
******* struct / union *******************************************************
******************************************************************************/
/******************************************************************************
******* static functions (prototypes) ****************************************
******************************************************************************/
static
void parse_file (char fname[static restrict FILENAME_MAX], char *arg);
static
void print_version (void);
/******************************************************************************
******* global functions *****************************************************
******************************************************************************/
void parse (char fname[static restrict FILENAME_MAX],
int argc, char *argv[])
{
static bool f = 0;
int opt = 0;
int opt_index = 0;
const struct option long_options[] = {
/* Standard */
{"help", no_argument, 0, 'h'},
{"license", no_argument, 0, 'L'},
{"usage", no_argument, 0, 'u'},
{"version", no_argument, 0, 'v'},
/* Non-standard */
{"file", required_argument, 0, 'f'},
/* Null */
{0, 0, 0, 0}
};
while ((opt = getopt_long(argc, argv, OPT_LIST, long_options,
&opt_index)) != -1) {
switch (opt) {
/* Standard */
case 'h':
system("cat "SHARE_HELP_FILE"");
exit(EXIT_SUCCESS);
case 'L':
system("cat "SHARE_LICENSE_FILE"");
exit(EXIT_SUCCESS);
case 'u':
system("cat "SHARE_USAGE_FILE"");
exit(EXIT_SUCCESS);
case 'v':
print_version();
exit(EXIT_SUCCESS);
/* Non-standard */
case 'f':
parse_file(fname, optarg);
f = true;
break;
case '?':
/* getopt_long already printed an error message. */
default:
goto usage;
}
}
if (!f)
goto usage;
return;
usage:
system("cat "SHARE_USAGE_FILE"");
exit(EXIT_FAILURE);
}
/******************************************************************************
******* static functions (definitions) ***************************************
******************************************************************************/
static
void parse_file (char fname[static restrict FILENAME_MAX], char *arg)
{
struct stat sb;
if (stat(arg, &sb) || !S_ISREG(sb.st_mode))
alx_error(EXIT_FAILURE, arg);
if (alx_snprintfs(fname, NULL, FILENAME_MAX, "%s", arg))
alx_error(EXIT_FAILURE, arg);
return;
}
static
void print_version (void)
{
printf("%s %s\n\n", PROG_NAME, PROG_VERSION);
}
/******************************************************************************
******* end of file **********************************************************
******************************************************************************/
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