cString.c

#include "cString.h"char *StringStr = NULL;
void cStringFree(void)
{free(StringStr);
}/**
* @brief  获取两个字符串之间的字符串
* @param  Str  源字符串
* @param  StrBegin  开始的字符串
* @param  StrEnd    结束的字符串
* @retval 字符串首地址
* @example  printf("%s",StrBetwStringMalloc("wqe5w4ew46e5w","5w","6e"));cStringFree();  输出:4ew4   
**/
char *StrBetwStringMalloc(char *Str,char *StrBegin,char *StrEnd)
{char *StrStart=0,*StrStop=0,len=0;len = strlen(StrBegin);//字符串长度StrStart=strstr(Str, StrBegin);//第一个字符串开始的地址if(StrStart){StrStop = strstr(StrStart+len+1, StrEnd);//第二个字符串开始的地址if(StrStop){StringStr = (char *)malloc(((StrStop - (StrStart+len))+1) *sizeof(char));//多分配一个空间,防止其它数据干扰memset(StringStr,NULL,(StrStop - (StrStart+len))+1);memcpy(StringStr, StrStart+len, (StrStop - (StrStart+len)));return StringStr;}else	return NULL;}else	return NULL;
}char *StrStop = NULL;
char StringValue;
void cStringRestore(void)
{*StrStop = StringValue;//补上当时截断的字符串
}
/**
* @brief  获取两个字符串之间的字符串 - 需要注意的是该函数必须传进来字符数组，不能是字符串常量
* @param  Str  源字符串
* @param  StrBegin  开始的字符串
* @param  StrEnd    结束的字符串
* @retval 字符串首地址
* @example  char data[] = "wqe5w4ew46e5w"; printf("%s",StrBetwString(data,"5w","6e"));cStringRestore();  输出:4ew4   
**/
char *StrBetwString(char *Str,char *StrBegin,char *StrEnd)
{char *StrStart=0,len=0;len = strlen(StrBegin);//字符串长度StrStart=strstr(Str, StrBegin);//第一个字符串开始的地址if(StrStart){StrStop = strstr(StrStart+len+1, StrEnd);//第二个字符串开始的地址if(StrStop){StringValue = *StrStop;*StrStop = 0;//截断return StrStart+len;}else return NULL;}else return NULL;
}/**
* @brief  分割字符串
* @param  src        源字符串
* @param  separator  分割
* @param  dest       接收子串的数组
* @param  num        子字符串的个数
* @retval None
* @example split("42,uioj,dk4,56",",",temp,&cnt);  temp[0]=42,...temp[3]=56  cnt=4
**/
void split(char *src,const char *separator,char **dest,int *num) 
{char *pNext;int count = 0;if (src == NULL || strlen(src) == 0)return;if (separator == NULL || strlen(separator) == 0)return;pNext = (char *)strtok(src,separator);while(pNext != NULL) {if(dest != NULL)*dest++ = pNext;++count;pNext = (char *)strtok(NULL,separator);}  *num = count;
}

cString.h

#ifndef _CSTRING_H
#define _CSTRING_Hvoid cStringFree(void);
void cStringRestore(void);
char *StrBetwStringMalloc(char *Str,char *StrBegin,char *StrEnd);
char *StrBetwString(char *Str,char *StrBegin,char *StrEnd);
void split(char *src,const char *separator,char **dest,int *num);#endif