best makefile

[compress.git] / skel.c

/* depend: */
/* cflags: */
/* linker: */

#include <assert.h>
#include <getopt.h>
#include <malloc.h>
#include <stdio.h>
#include <stdlib.h>

/* macros */

#define CEIL(x, y) (((x) + (y) - 1) / (y))
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
#define VERBOSE(level, statement...) do { if (level <= verbose) { statement; } } while(0)

/* gobal variables */

char *progname = NULL;
int verbose = 0;

/* help function */

void usage (int ret)
{
    FILE *fd = ret ? stderr : stdout;
    fprintf (fd, "usage: %s\n", progname);
    fprintf (fd, " -h : help message\n");
    fprintf (fd, " -v : verbose level (%d)\n", verbose);

    exit (ret);
}

/* main function */

int main (int argc, char *argv[]) 
{

    progname = argv[0];

    int c;
    while ((c = getopt(argc, argv, "hv:")) != EOF) {
        switch (c) {
        case 'v':
            verbose = atoi (optarg);
            break;
        case 'h':
        default:
            usage (c != 'h');
        }
    }
    if (argc - optind != 0) {
        fprintf (stderr, "%s: invalid option -- %s\n", progname, argv[optind]);
        usage (1);
    }

    printf ("work in progress...\n");

    return 0;
}

// test: skel.exe -h
// test: skel.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
// test: skel.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }'
// test: skel.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }'

/* vim: set ts=4 sw=4 et */