chang~xm.c

一个两碟控制的VCD的代码,两碟之间的转动及连续播放,已大量生产的CODE.

/* SCCSID @(#)changever.c	1.7 3/27/97 */

#include "stdio.h"
#include "stdlib.h"
#include "time.h"
#define MAXTEXT 128 /* Max text number  in each line */
/* Version:  0x FFF| F | FF | FF
             SCCSID mon  dat  yea
*/

/* changever.c:
   when sccsget has SCCSID (not changever.c 1.1 1/14/97) we just pick that 
   ID and time as our ROM version. When sccsget is generated new,we go to
   SCCS/ , and find its previous version, then +1, as its version.
   its date is the same date as sccsget generated.
 */

long split();

main()
{
    FILE *fp;
    long version;

    fp = fopen("version.h", "w");
    if (!fp) {
	system("rm -f version.h");
        fp = fopen("version.h", "w");
    }
    version  = GetVersion();
    fprintf(fp, "long version = 0x%x;\n", version);
    fclose(fp);
    change_bank30(version);
    exit(0);
}

change_bank30(version)
long version;
{
    FILE *fp;
    fp = fopen("bank30.rom", "r");
    if (!fp) {
       fprintf(stderr, "bank30.rom open failed. \nTo keep bank30.rom to the same version as your distributed code,\nafter you generate bank30.rom, run \"changever \".");
       return;
    }
    fclose(fp);
    fp = fopen("bank30.rom", "a");
    fseek(fp, 0, 0);
    fwrite(&version, sizeof(long), 1, fp);
    fclose(fp);
}

GetVersion()
{
    FILE *fp;
    char ss[128];
    long version;

    fp = fopen("sccsget", "r");
    if (!fp) {
       printf("Cannot open \"sccsget\"!\n");
       exit(1);
    }
    while (fgets(ss, 128, fp)) {
	if (!strncmp(ss, "# SCCSID", 8)) {
	   if (version = split(ss)) break;
	   else {
	   }
	}
    }
    fclose(fp);
    return version;
}

long split(ss)
char *ss;
{
     char s1[32], s2[32], s3[32], s4[32], s5[32];
     char s6[4], ch[128];
     long version;
     long i, j, date, mon, year;
     char *p;
     FILE *fp;
     time_t tmp;

     sscanf(ss, "%s%s%s%s%s", s1, s2, s3, s4, s5);
     p = s4;
     while (*p && *p!='.') p++;
     if (!*p) {
	
	strcpy(s1, "SCCS/s.sccsget");
	fp = fopen(s1, "r");
	if (!fp)  {
	   strcpy(s1,getenv("PROJECTDIR"));
	   strcat(s1,"/SCCS/s.sccsget");
	   fp = fopen(s1, "r");
	   if (!fp) {
	   printf("Please Check in sccsget first!\n");
	   exit(1);
	   }
	}
	while (fgets(ch, 128, fp)) {
	   if (ch[0]== 001 && ch[1]=='d') {
		p = &ch[5];
		while (*p && *p!='.') p++;
		break;
	   }
	}
	fclose(fp);
        p++;
        version = atoi(p) + 1;
        time(&tmp);
        strftime(p, 20, "%D", localtime(&tmp));
     }
     else {
        p++;
        version = atoi(p);
        p = s5;
     }
     sscanf(p, "%d", &mon);
     while (*p!='/') p++;
     p++;
     sscanf(p, "%d", &date);
     while (*p!='/') p++;
     p++;
     sscanf(p, "%d", &year);
     version = version << 20;
     mon = mon << 16;
     date = date << 8;
     version = version | mon | date | year;
     return version;
}