//使用寬字符集，重寫(xiě)了一些string類里面有所欠缺的方法，都是為了忽略大小寫(xiě)而做的。
/*
* Utils.h
*
* Created on: 2010-1-9
* Author: dream
*/
#ifndef UTILS_H_
#define UTILS_H_
#include <iostream>
#include <fstream>
#include <string>
#include <cstddef>
/**
*常用工具類
*/
class StringUtil: char_traits<wchar_t> {
public:
/**
*將字符串轉(zhuǎn)換成小寫(xiě)
*/
static const string toLowerCase(string& s) {
string lower(s);
for (size_t i = 0; i < s.length(); ++i) {
lower[i] = tolower(lower[i]);
}
return lower;
}
/**
* 將字符串轉(zhuǎn)換成大寫(xiě)
*/
static const string toUpperCase(string& s) {
string upper(s);
for (size_t i = 0; i < s.length(); ++i) {
upper[i] = toupper(upper[i]);
}
return upper;
}
/*以下將對(duì)一些string類的方法重載，以提供忽略大小寫(xiě)的方法*/
///////////////////////////////////////////////////////////////////////
static const bool eq(wchar_t c1st, wchar_t c2nd) {
return towupper(c1st) == towupper(c2nd);
}
static const bool ne(wchar_t c1st, wchar_t c2nd) {
return towupper(c1st) == towupper(c2nd);
}
static const bool lt(wchar_t c1st, wchar_t c2nd) {
return towupper(c1st) < towupper(c2nd);
}
/**
*str1 > str2 返回 1
*str1 < str2 返回 -1
*str1 = str2 返回 0
*/
static const int compare(const wchar_t* str1, const wchar_t* str2, size_t n) {
for (size_t i = 0; i < n; i++) {
if (str1 == 0) {
return -1;
} else if (str2 == 0) {
return 1;
} else if (towlower(*str1) < towlower(*str2)) {
return -1;
} else if (towlower(*str1) > towlower(*str2)) {
return 1;
}
assert(towlower(*str1) == towlower(*str2));
++str1;
++str2;
}
return 0;
}
/**
* 忽略大小寫(xiě)查找指定字符串，返回的是16進(jìn)制的值
*
* 因?yàn)間cc默認(rèn)使用char或者string類型，所以出入第一個(gè)參數(shù)的時(shí)候需要進(jìn)行強(qiáng)制類型轉(zhuǎn)換
*
* @Param wchar_t* s1 : 待查找的字符串
* @Param size_t n: 從第N位開(kāi)始查找
* @Param wchar_t c:被查找的對(duì)象
*/
static const wchar_t* find(const wchar_t* s1, size_t n, wchar_t c) {
while (n-- > 0) {
if (towupper(*s1) == towupper(c))
return s1;
else
++s1;
}
return 0;
}
};
#endif /* UTILS_H_ */