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fix core dump bug! in str_functs.cpp

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This commit is contained in:
gwdwyy 2013-07-21 01:31:34 +08:00
parent c8ea7610bd
commit e0c8dd2d52
1 changed files with 59 additions and 45 deletions
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104
src/cppcommon/str_functs.cpp
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@ -216,21 +216,24 @@ namespace CPPCOMMON
string unicodeToUtf8(const string& uniStr)
{
size_t len = uniStr.size();
if(len%2)
if(uniStr.empty() || len%2)
{
return "";
}
uint16_t * uniArr = new uint16_t[len>>1];
char * utfStr = new char[len<<1];
uint16_t * uniArr = new uint16_t[(len>>1) + 1];
if(NULL == uniArr)
{
return "";
}
char * utfStr = new char[(len<<1) + 1];
if(NULL == utfStr)
{
delete [] uniArr;
return "";
}
for(int i = 0; i < len; i+=2)
{
//uint16_t tmp1 = uniStr[i];
//tmp1 <<= 8;
//tmp1 &= 0xff00;
//uint16_t tmp2 = uniStr[i+1];
//tmp2 &= 0x00ff;
//uniArr[i>>1] = tmp1 | tmp2;
uniArr[i>>1] = twocharToUint16(uniStr[i], uniStr[i+1]);
}
@ -250,6 +253,7 @@ namespace CPPCOMMON
}
/*from: http://www.cppblog.com/lf426/archive/2008/03/31/45796.html */
/*if the inutf8 is not utf8 , this function maybe cause core dump!!!*/
int utf8ToUnicode(const char* inutf8, int len, uint16_t* unicode)
{
int length;
@ -280,27 +284,31 @@ namespace CPPCOMMON
length++;
}
*unicode = 0;
//*unicode = 0; !! this may cause out range of array;
return length;
}
string utf8ToUnicode(const string& utfStr)
{
uint16_t* pUni = new uint16_t[utfStr.size()];
size_t uniLen = utf8ToUnicode(utfStr.c_str(), utfStr.size(), pUni);
string res;
if(uniLen ==0 )
cout<<__FILE__<<__LINE__<<endl;
if(utfStr.empty())
{
res = "";
return "";
}
else
uint16_t* pUni = new uint16_t[utfStr.size() + 1];
if(NULL == pUni)
{
for(uint i = 0; i < uniLen; i++)
{
pair<char, char> char2= uint16ToChar2(pUni[i]);
res += char2.first;
res += char2.second;
}
return "";
}
size_t uniLen = utf8ToUnicode(utfStr.c_str(), utfStr.size(), pUni);
string res("");
for(uint i = 0; i < uniLen; i++)
{
pair<char, char> char2= uint16ToChar2(pUni[i]);
res += char2.first;
res += char2.second;
}
delete [] pUni;
return res;
@ -317,7 +325,6 @@ namespace CPPCOMMON
cd = iconv_open(to_charset,from_charset);
if (cd==NULL)
{
//cout<<__FILE__<<__LINE__<<endl;
return -1;
}
memset(outbuf,0,outlen);
@ -334,14 +341,17 @@ namespace CPPCOMMON
//gbk -> utf8
string gbkToUtf8(const string& gbk)
{
//cout<<__FILE__<<__LINE__<<gbk<<endl;
if(gbk.empty())
{
return "";
}
string res("");
size_t maxLen = gbk.size()*4;
size_t maxLen = gbk.size()*4 + 1;
char * pUtf = new char[maxLen];
if(NULL == pUtf)
{
return "";
}
int ret = code_convert("gbk", "utf-8", (char *)gbk.c_str(), gbk.size(), pUtf, maxLen);
if(ret == -1)
{
@ -358,8 +368,12 @@ namespace CPPCOMMON
{
//cout<<__FILE__<<__LINE__<<gbk<<endl;
string res;
size_t maxLen = utf.size()*4;
size_t maxLen = utf.size()*4 + 1;
char * pGbk = new char[maxLen];
if(NULL == pGbk)
{
return "";
}
int ret = code_convert("utf-8", "gbk", (char *)utf.c_str(), utf.size(), pGbk, maxLen);
if(ret == -1)
{
@ -429,31 +443,31 @@ int main()
// cout<<utf8str<<endl;
//}
//cout<<string_format("hehe%s11asd%dasf","[here]",2);
//ifstream ifile("testdata/dict.utf8");
//string line;
//while(getline(ifile, line))
//{
// cout<<line<<endl;
// string uniStr = utf8ToUnicode(line);
// //cout<<uniStr<<endl;
// string utfStr = unicodeToUtf8(uniStr);
// cout<<utfStr<<endl;
//}
//vector<string> tmp;
//tmp.push_back("1");
////tmp.push_back("2");
////tmp.clear();
//cout<<joinStr(tmp, ",")<<endl;
ifstream ifile("testdata/dict.gbk");
string line;
while(getline(ifile, line))
{
cout<<line<<endl;
string s = gbkToUtf8(line);
cout<<getUtf8WordLen(s)<<endl;
s = utf8ToGbk(s);
cout<<s<<endl;
string uniStr = utf8ToUnicode(line);
cout<<utf8ToUnicode(uniStr)<<endl;// this will core dump
string utfStr = unicodeToUtf8(uniStr);
cout<<utfStr<<endl;
}
//vector<string> tmp;
//tmp.push_back("1");
////tmp.push_back("2");
////tmp.clear();
//cout<<joinStr(tmp, ",")<<endl;
//ifstream ifile("testdata/dict.gbk");
//string line;
//while(getline(ifile, line))
//{
// cout<<line<<endl;
// string s = gbkToUtf8(line);
// cout<<getUtf8WordLen(s)<<endl;
// s = utf8ToGbk(s);
// cout<<s<<endl;
//}
return 0;
}
#endif