在global.h中添加代码 /* * @param char* dest 目标串，也就是替换后的新串
* @param const char* src 源字符串，被替换的字符串
* @param const char* oldstr 旧的子串，将被替换的子串
* @param const char* newstr 新的子串
* @param int len 将要被替换的前len个字符 */ char *lr_strreplace(char *dest, char *src, const char *oldstr, const char *newstr, size_t len){ char *needle; //子串位置指针 char *tmp; //临时内存区 //如果串相等，则直接返回
if(strcmp(oldstr, newstr)==0){ return src;
} dest = src; //把源串地址赋给指针dest，即让dest和src都指向src的内存区域 //如果找到子串, 并且子串位置在前len个子串范围内, 则进行替换, 否则直接返回
while((needle = (char *) strstr(dest, oldstr)) && (needle -dest <= len)){ //分配新的空间: +1 是为了添加串尾的'\0'结束符
tmp=(char*)malloc(strlen(dest)+(strlen(newstr)-strlen(oldstr))+1); strncpy(tmp, dest, needle-dest); //把src内的前needle-dest个内存空间的数据，拷贝到arr tmp[needle-dest]='\0'; //标识串结束 strcat(tmp, newstr); //连接arr和newstr, 即把newstr附在arr尾部, 从而组成新串(或说字符数组)arr strcat(tmp, needle+strlen(oldstr)); //把src中 从oldstr子串位置后的部分和arr连接在一起，组成新串arr dest = (char *)strdup(tmp); //把用malloc分配的内存，复制给指针retv free(tmp); //释放malloc分配的内存空间 } return dest; }
在Action中调用
Action()
{
//11041331","11041372","11041373","11041374
//11041331|11041372|11041373|11041374 char *str; char *old="\",\""; //需要替换的字符串"," char *new="|"; char *dest; lr_save_string("11041331\",\"11041372\",\"11041373\",\"11041374", "src"); str=lr_eval_string("{src}"); lr_output_message("替换前的字符串=%s",lr_eval_string("{src}")); lr_output_message("替换后的字符串=%s",lr_strreplace(dest,str,old,new,strlen(str))); return 0;
}
补充：
int main()
{
char *str="http://192.168.1.1:58763/result.xml";
char *old="192.168.1.1";
char *new="127.0.0.1"; char *dest;
//分配内存空间: 大小 == src的长度 ＋ newstr和oldstr长度差(可能是正负或0)+1
printf("%s\n",strreplace(dest, str, old, new,1));
printf("%s\n",strreplace(dest, str, old, new,5));
printf("%s\n",strreplace(dest, str, old, new,9));
printf("%s\n",strreplace(dest, str, old, new,11)); printf("%s\n",strreplace(dest, str, old, new,40)); if(dest)
{
free(dest);
}
return 0; }