mkreadme.c

mips架构的bootloader,99左右的版本 但源代码现在没人更新了

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

#define BUFSZ 200

char *mons[] = { "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug",
		"Sep","Oct","Nov","Dec"};

char *strdchr(),*strichr();

main(argc,argv)
int argc;
char *argv[];
{
char *fname,*revfile,*x,*pat;
struct tm *t;
char buf[BUFSZ],date[20],rev[BUFSZ];
long now;
FILE *fp;
int i;

if (argc < 3) {
	fprintf(stderr,"usage: mkreadme file versfile\n");
	exit(1);
	}

fname = argv[1];
revfile = argv[2];

fp = fopen(revfile,"r");
if (fp == 0) {
	fprintf(stderr,"can't open %s\n",revfile);
	exit(1);
	}
fgets(rev,BUFSZ,fp);
fclose(fp);
if (rev[strlen(rev)-1] == '\n') rev[strlen(rev)-1] = 0;

now = time(0L);
t = localtime(&now);
sprintf(date,"%s %d, 19%d",mons[t->tm_mon],t->tm_mday,t->tm_year);

fp = fopen(fname,"r");
if (fp == 0) {
	fprintf(stderr,"can't open %s\n",fname);
	exit(1);
	}

while (fgets(buf,BUFSZ,fp)) {
	pat = "%VERS%";
	if (x=strstr(buf,pat)) {
		for (i=0;i<strlen(pat);i++) strdchr(x);
		stristr(x,rev);
		}
	pat = "%DATE%";
	if (x=strstr(buf,pat)) {
		for (i=0;i<strlen(pat);i++) strdchr(x);
		stristr(x,date);
		}
	fputs(buf,stdout);
	}
fclose(fp);
exit(0);
}


/** char *strdchr(p) deletes the first char from the string p */
char *strdchr(p)
char *p;
{
char *t;

if (!p) return(p);
for (t=p;*t;t++) *t = *(t+1);
return(p);
}


/** stristr(dst,p) insert string p into dst */
stristr(dst,p)
char *dst,*p;
{
int i;

for (i=strlen(p);i>0;i--) strichr(dst++,*p++);
}


/** char *strichr(p,c) inserts c as the first char of the string p */
char *strichr(p,c)
char *p;
int c;
{
char *t;

if (!p) return(p);
for (t=p;*t;t++) ;
for (;t >= p;t--) *(t+1) = *t;
*p = c;
return(p);
}

/** char *strstr(p,q) returns a ptr to q in p, else 0 if not found */
char *strstr(p,q)
char *p,*q;
{
char *s,*t;

if (!p || !q) return(0);

if (! *q) return(p);
for (;*p;p++) {
	if (*p == *q) {
		t = p; s = q;
		for (;*t;s++,t++) {
			if (*t != *s) break;
			}
		if (! *s) return(p);
		}
	}
return(0);
}