1 char * strReplace(char *str, char *oldstr, char * newstr)
2 {
3 char *beg = strFind(str, oldstr);
4 if (!beg)
5 return str;
6 int lenStr = strlen(str);
7 int lenOldstr = strlen(oldstr);
8 int lenNewstr = strlen(newstr);
9 memmove(beg + lenNewstr, beg + lenOldstr, lenStr - (beg - str) - lenOldstr + 1);
10 memcpy(beg, newstr, lenNewstr);
11 return str;
12 }
13
14 char * strFind(char * str, char * sub)
15 {
16 char * psub = sub;
17 char * pstr = str;
18 while (*str){
19 psub = sub;
20 pstr = str;
21 while (*str == *psub && *psub)
22 {
23 ++str;
24 ++psub;
25 }
26 if (!*psub)
27 return pstr;
28 else
29 str = pstr + 1;
30 }
31 return NULL;
32 }
