C语言判断文件夹名是否合法

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/***************************************************************************
* Function Name: validateFoldername
* Description: The ength of folder name should be less than 255.
* Illegal characters are \<>()[]&:,/|?* \0 ~ \31
* Return: 0 for success, otherwise 1.
****************************************************************************/

#define MAX_FOLDER_NAME_LEN 255

int validateFoldername(char *pName)
{
    int ret = 0;
    unsigned int u32Length = 0, u32Index = 0;
    unsigned char u8SpecialChar[] = {'\\','<','>','(',')','[',']','&',':',',','/','|','?','*'};
    unsigned char u8CtrlCharBegin = 0x0, u8CtrlCharEnd = 0x31;

    if (pName == NULL)
    {
        ret = 1;
    }
    else
    {
        u32Length = strlen(pName);
        if ( u32Length >= MAX_FOLDER_NAME_LEN)
            ret= 1;
    }

    for (u32Index = 0; (u32Index < u32Length) && (ret== 0);
        u32Index ++)
    {
        if (u8CtrlCharBegin <= pName[u32Index] <= u8CtrlCharEnd)
        {
            ret= 1;
        }
        else if (strchr(u8SpecialChar,pName[u32Index]) != NULL)
        {
            ret= 1;
        }
    }

return ret;

}

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