/* :ts=4                                ver.c
 *
 *    ver - Version update util
 *    Copyright (C) 1998 Gáti Gergely
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software Foundation,
 *    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *    e-mail: gatig@dragon.klte.hu
 *
 *
 * usage:
 *          filename        - basename of app.
 *          none            - update date only
 *          -r              - update rev
 *          -v              - update ver
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>

char fname[300];
char vname[300];
char vers[100];
char revs[100];
char copyright[]="Copyright © by Gáti Gergely";

int main(int argc, char **argv) {
    FILE *f,*v;
    time_t tval;
    struct tm *lt;
    int ver,rev;
    int day,month,year;
    int hour,minute;

    if(argc<2) return(-1);
    strcpy(fname,argv[1]);
    strcat(fname,"_ver.h");
    strcpy(vname,argv[1]);
    strcat(vname,"_ver.data");
    v=fopen(vname,"rb");    
    if(v!=NULL) {
        fgets(vers,100,v);
        ver=atoi(vers);
        fgets(revs,100,v);
        rev=atoi(revs);
        fclose(v);
    } else rev=ver=0;

    time(&tval);
    lt=localtime(&tval);

    if(argc>2) {
        if(strcmp(argv[2],"-r")==0) rev++;
        if(strcmp(argv[2],"-v")==0) { ver++; rev=0; }
    }

    v=fopen(vname,"wb");
    if(v==NULL) return(-1);
    fprintf(v,"%d\n%d\n",ver,rev);
    fclose(v);

    f=fopen(fname,"wb");
    if(f==NULL) return(-1);

    fprintf(f,"/* %s\n * %s version file\n",fname,argv[1]);
    fprintf(f," *\n * Created by ver utility\n */\n\n");
    fprintf(f,"#define VERSION         %d\n",ver);
    fprintf(f,"#define REVISION        %d\n",rev);
    fprintf(f,"#define DATE            \"%02d.%02d.%02d\"\n",lt->tm_mday,lt->tm_mon+1,lt->tm_year);
    fprintf(f,"#define TIME            \"%02d:%02d:%02d\"\n",lt->tm_hour,lt->tm_min,lt->tm_sec);
    fprintf(f,"#define VERS            \"%s %d.%d\"\n",argv[1],ver,rev);
    fprintf(f,"#define VSTRING         \"%s %d.%d (%d.%d.%d)\\r\\n\"\n",argv[1],ver,rev,lt->tm_mday,lt->tm_mon+1,lt->tm_year);
    fprintf(f,"#define VERSTAG         \"\\0$VER:  %s %d.%d (%d.%d.%d)    %s\"\n",argv[1],ver,rev,lt->tm_mday,lt->tm_mon+1,lt->tm_year,copyright);
    fclose(f);
}