菜鸟第一次发帖，大家多多指教
class Convert
{
public:
Convert(){}
~Convert(){};
//多字节转化成宽字符字符串
static void atou(char *pszAssicText, wchar_t *&pszUniText, unsigned long &cchUniText);
//宽字符转化成多字节字符串
static void utoa(wchar_t *pszUniText, char *&pszAssicText, unsigned long &cchAssicText);
//是否小写
static bool IsLower(int c);
//是否大写
static bool IsUpper(int c);
//转换成小写
static int ToLower(int c);
//转换成大写
static int ToUpper(int c);
//计算字符串长度
static int lstrlen(const char *str);
//复制字符串到缓存区中
static char *lstrcpy(char *str1, const char *str2);
//复制指定大小的字符串到缓冲区中
static char *lstrcpyn(char *str1, const char *str2, int num);
//连接字符串
static char *lstrcat(char *str1, const char *str2);
//比较字符串
static int lstrcmp(char *str1, char *str2);
//比较字符串，比较指定字节
static int lstrncmp(char *str1, char *str2, int num);
//比较字符串，忽略大小写
static int lstrcmpi(char *str1, char *str2);
//比较字符串，比较指定字节,，忽略大小写
static int lstrncmpi(char *str1, char *str2, int num);
//32位整形转化成字符串
static int itoa(int num, char *str);
//32位无符号整形转化成字符串
static int uitoa(unsigned int num, char *str);
//字符串转化成32位整形
static int atoi(char *str);
//64位整形转化成字符串
static int i64toa(__int64 num, char *str);
//64位无符号整形转化成字符串
static int ui64toa(unsigned __int64 num, char *str);
//字符串转化成64位整形
static __int64 atoi64(char *str);
};
bool Convert::IsLower(int c)
{
if(c >= 'a' && c <= 'z')
return true;
return false;
}
bool Convert::IsUpper(int c)
{
if(c >= 'A' && c <= 'Z')
return true;
return false;
}
int Convert::ToLower(int c)
{
if(IsUpper(c))
{
return c + 32;
}
return c;
}
int Convert::ToUpper(int c)
{
if(IsLower(c))
{
return c - 32;
}
return c;
}
void Convert::atou(char *pszAssicText, wchar_t *&pszUniText, unsigned long &cchUniText)
{
cchUniText = MultiByteToWideChar(CP_ACP, 0, pszAssicText, -1, 0, 0);
pszUniText = new wchar_t[cchUniText];
MultiByteToWideChar(CP_ACP, 0, pszAssicText, -1, pszUniText, cchUniText);
}
void Convert::utoa(wchar_t *pszUniText, char *&pszAssicText, unsigned long &cchAssicText)
{
cchAssicText = WideCharToMultiByte(CP_OEMCP, 0, pszUniText, -1, 0, 0, 0, 0);
pszAssicText = new char[cchAssicText];
WideCharToMultiByte(CP_OEMCP, 0, pszUniText, -1, pszAssicText, cchAssicText, 0, 0);
}
int Convert::lstrlen(const char *str)
{
int i;
if(!str)
return 0;
for(i = 0; str[i]; i++);
return i;
}
char *Convert::lstrcpy(char *str1, const char *str2)
{
int i;
if(!str1 || !str2)
return NULL;
for(i = 0; str2[i]; i++)
{
str1[i] = str2[i];
}
str1[i] = str2[i];
return str1;
}
char *Convert::lstrcpyn(char *str1, const char *str2, int num)
{
int i;
if(!str1 || !str2)
return NULL;
for(i = 0; i < num; i++)
{
str1[i] = str2[i];
}
str1[i] = '\0';
return str1;
}
char *Convert::lstrcat(char *str1, const char *str2)
{
int i;
int j;
if(!str1 || !str2)
return NULL;
for(i = 0; str1[i]; i++);
for(j = 0; str2[j]; i++, j++)
{
str1[i] = str2[j];
}
str1[i] = str2[j];
return str1;
}
int Convert::lstrcmp(char *str1, char *str2)
{
int i;
if(!str1 || !str2)
return 0;
for(i = 0; (str1[i] == str2[i]) && str1[i] && str2[i]; i++);
if(str1[i] == str2[i])
return 0;
return (str1[i] > str2[i]) ? 1 : -1;
}
int Convert::lstrncmp(char *str1, char *str2, int num)
{
int i;
if(!str1 || !str2 || !num)
return 0;
for(i = 0; (i < num - 1) && (str1[i] == str2[i]) && str1[i] && str2[i]; i++);
if(str1[i] == str2[i])
return 0;
return (str1[i] > str2[i]) ? 1 : -1;
}
int Convert::lstrcmpi(char *str1, char *str2)
{
int i;
if(!str1 || !str2)
return 0;
for(i = 0; (ToLower(str1[i]) == ToLower(str2[i])) && str1[i] && str2[i]; i++);
if(ToLower(str1[i]) == ToLower(str2[i]))
return 0;
return (ToLower(str1[i]) > ToLower(str2[i])) ? 1 : -1;
}
int Convert::lstrncmpi(char *str1, char *str2, int num)
{
int i;
if(!str1 || !str2 || !num)
return 0;
for(i = 0; (ToLower(str1[i]) == ToLower(str2[i])) && (i < num - 1) && str1[i] && str2[i]; i++);
if(ToLower(str1[i]) == ToLower(str2[i]))
return 0;
return (ToLower(str1[i]) > ToLower(str2[i])) ? 1 : -1;
}
int Convert::itoa(int num, char *str)
{
char tmp[15];
int mod;
int quotient;
int i = 0;
int j = 0;
if(num == 0)
{
str[0] = '\0';
return 0;
}
else if(num < 0)
{
num = 0 - num;
tmp[i++] = '\0';
str[j++] = '-';
}
else
{
tmp[i++] = '\0';
}
quotient = num;
for(; quotient; i++)
{
mod = quotient % 10;
quotient = quotient / 10;
tmp[i] = (unsigned char)(mod + 48);
}
for(; i--; j++)
{
str[j] = tmp[i];
}
return j;
}
int Convert::uitoa(unsigned int num, char *str)
{
char tmp[15];
int mod;
unsigned int quotient;
int i = 0;
int j = 0;
if(num == 0)
{
str[0] = '\0';
return 0;
}
tmp[i++] = '\0';
quotient = num;
for(; quotient; i++)
{
mod = quotient % 10;
quotient = quotient / 10;
tmp[i] = (unsigned char)(mod + 48);
}
for(; i--; j++)
{
str[j] = tmp[i];
}
return j;
}
int Convert::atoi(char *str)
{
int num = 0;
int bit = 1;
bool bSign = false;
int i;
int j;
if(str == NULL)
return 0;
if(str[0] == '-' || str[0] == '+')
{
bSign = true;
}
for(i = bSign; str[i]; i++)
{
if(str[i] < 48 || str[i] > 57)
break;
}
for(j = 0; j < i - 1 - bSign; j++)
{
bit *= 10;
}
for(i = bSign; str[i]; i++)
{
num = num + bit * (str[i] - 48);
bit /= 10;
}
if(str[0] == '-')
{
num = 0 - num;
}
return num;
}
int Convert::i64toa(__int64 num, char *str)
{
char tmp[35];
int mod;
__int64 quotient;
int i = 0;
int j = 0;
if(str == NULL)
return 0;
if(num == 0)
{
str[0] = '\0';
return 0;
}
else if(num < 0)
{
num = 0 - num;
tmp[i++] = '\0';
str[j++] = '-';
}
else
{
tmp[i++] = '\0';
}
quotient = num;
for(; quotient; i++)
{
mod = quotient % 10;
quotient = quotient / 10;
tmp[i] = (unsigned char)(mod + 48);
}
for(; i--; j++)
{
str[j] = tmp[i];
}
return j;
}
int Convert::ui64toa(unsigned __int64 num, char *str)
{
char tmp[35];
int mod;
unsigned __int64 quotient;
int i = 0;
int j = 0;
if(str == NULL)
return 0;
if(num == 0)
{
str[0] = '\0';
return 0;
}
else if(num < 0)
{
num = 0 - num;
tmp[i++] = '\0';
str[j++] = '-';
}
else
{
tmp[i++] = '\0';
}
quotient = num;
for(; quotient; i++)
{
mod = quotient % 10;
quotient = quotient / 10;
tmp[i] = (unsigned char)(mod + 48);
}
for(; i--; j++)
{
str[j] = tmp[i];
}
return j;
}
__int64 Convert::atoi64(char *str)
{
__int64 num = 0;
__int64 bit = 1;
bool bSign = false;
int i;
int j;
if(str == NULL)
return 0;
if(str[0] == '-' || str[0] == '+')
{
bSign = true;
}
for(i = bSign; str[i]; i++)
{
if(str[i] < 48 || str[i] > 57)
break;
}
for(j = 0; j < i - 1 - bSign; j++)
{
bit *= 10;
}
for(i = bSign; str[i]; i++)
{
num = num + bit * (str[i] - 48);
bit /= 10;
}
if(str[0] == '-')
{
num = 0 - num;
}
return num;
}
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