C语言根据特定的符号分割字符串 如：字符串"a,bbb,ccc"->数组[a,bbb,ccc]

//根据符号','分割字符串，例如：字符串"a,bbb,ccc"->数组[a,bbb,ccc] author:wangchangshuai jlu
char** splitFileNames(const char* strFileNames, int* count)
{
char** result = NULL, *strFileNamesCopy = NULL;
if ((strFileNamesCopy = (char*) myMalloc(strlen(strFileNames) + 1)) == NULL)
{
myLog("Malloc heap failed!\n");
return NULL;
}
strcpy(strFileNamesCopy, strFileNames);
char *p, *pre = strFileNamesCopy;

//统计符号','的个数，假设文件名的个数是符号','的个数+1
int i, supposeCount = 0, len = strlen(strFileNames);
for (i = 0; i < len; ++i)
{
if (strFileNames[i] == ',')
{
supposeCount++;
}
}
supposeCount += 1; //统计结束

if ((result = (char**) myMalloc(sizeof(char*) * supposeCount)) == NULL)
{
myLog("Malloc heap failed!\n");
return NULL;
}

//开始分割，同时统计实际文件名的个数
(*count) = 0;
for (i = 0; (p = strchr(strFileNamesCopy, SPLIT_FLAG)) != NULL; ++i)
{
if (pre == p)
{ //假如两个逗号之间没有字符串
*p = '\n';
pre = p + 1;
continue;
}
if ((result[*count] = (char*) myMalloc(p - pre + 1)) == NULL)
{
myLog("Malloc heap failed!\n");
return NULL;
}
memset(result[*count], 0, p - pre + 1);
memcpy(result[*count], pre, p - pre);
*p = '\n';
pre = p + 1;
++(*count);
}
if (*pre != '\0')
{ //假如最后一个逗号后面有字符串
if ((result[*count] = (char*) myMalloc(strlen(pre) + 1)) == NULL)
{
myLog("Malloc heap failed!\n");
return NULL;
}
memset(result[*count], 0, strlen(pre) + 1);
strcpy(result[*count], pre);
++(*count);
}
if (pre == strFileNamesCopy)
{ //假如没有找到符号“,”
if ((result[0] = (char*) myMalloc(strlen(strFileNamesCopy) + 1)) == NULL)
{
myLog("Malloc heap failed!\n");
return NULL;
}
memset(result[0], 0, strlen(strFileNamesCopy) + 1);
strcpy(result[0], strFileNamesCopy);
*count = 1;
}
myFree(strFileNamesCopy);
return result;
}