Char, wchar_t, utf8, Unicode, GBK Conversion

1 char * To wchar_t

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// Char * To wchar_t
Wchar_t wfilename [1, 256] = {0 };
Char filename [] = {"C: // init. properties "};
Ulbytes = multibytetowidechar (cp_acp, 0, filename,-1, null, 0 );
Ulbytes = multibytetowidechar (cp_acp, 0, filename,-1, wfilename, ulbytes );
// Char * To wchar_t
Wchar_t wfilename [1, 256] = {0 };
Char filename [] = {"C: // init. properties "};
Ulbytes = multibytetowidechar (cp_acp, 0, filename,-1, null, 0 );
Ulbytes = multibytetowidechar (cp_acp, 0, filename,-1, wfilename, ulbytes );
 

2 wchar_t to char *

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// Wchar_t to char *
Ulbytes = widechartomultibyte (cp_acp, 0, wfilename,-1, null, 0, null, null );
Ulbytes = widechartomultibyte (cp_acp, 0, wfilename,-1, filename, ulbytes, null, null );
// Wchar_t to char *
Ulbytes = widechartomultibyte (cp_acp, 0, wfilename,-1, null, 0, null, null );
Ulbytes = widechartomultibyte (cp_acp, 0, wfilename,-1, filename, ulbytes, null, null );

3 Unicode to UTF-8

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Int unitoutf8 (cstring strunicode, char * szutf8)
{
// MessageBox (strunicode );
Int ilen = widechartomultibyte (cp_utf8, 0, (lpctstr) strunicode,-1, null, 0, null, null );
Char * szutf8temp = new char [ilen + 1];
Memset (szutf8temp, 0, ilen + 1 );
Widechartomultibyte (cp_utf8, 0, (lpctstr) strunicode,-1, szutf8temp, ilen, null, null );
// Size_t A = strlen (szutf8temp );
Sprintf (szutf8, "% s", szutf8temp );//
Delete [] szutf8temp;
Return ilen;
}
Int unitoutf8 (cstring strunicode, char * szutf8)
{
// MessageBox (strunicode );
Int ilen = widechartomultibyte (cp_utf8, 0, (lpctstr) strunicode,-1, null, 0, null, null );
Char * szutf8temp = new char [ilen + 1];
Memset (szutf8temp, 0, ilen + 1 );
Widechartomultibyte (cp_utf8, 0, (lpctstr) strunicode,-1, szutf8temp, ilen, null, null );
// Size_t A = strlen (szutf8temp );
Sprintf (szutf8, "% s", szutf8temp );//
Delete [] szutf8temp;
Return ilen;
}
 

4. GBK to UTF-8

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Void convertgbktoutf8 (cstring & strgbk)
{
Int Len = multibytetowidechar (cp_acp, 0, (lpctstr) strgbk,-1, null, 0 );
Unsigned short * wszutf8 = new unsigned short [Len + 1];
Memset (wszutf8, 0, Len * 2 + 2 );
Multibytetowidechar (cp_acp, 0, (lpctstr) strgbk,-1, wszutf8, Len );

Len = widechartomultibyte (cp_utf8, 0, wszutf8,-1, null, 0, null, null );
Char * szutf8 = new char [Len + 1];
Memset (szutf8, 0, Len + 1 );
Widechartomultibyte (cp_utf8, 0, wszutf8,-1, szutf8, Len, null, null );

Strgbk = szutf8;
Delete [] szutf8;
Delete [] wszutf8;
}
Void convertgbktoutf8 (cstring & strgbk)
{
Int Len = multibytetowidechar (cp_acp, 0, (lpctstr) strgbk,-1, null, 0 );
Unsigned short * wszutf8 = new unsigned short [Len + 1];
Memset (wszutf8, 0, Len * 2 + 2 );
Multibytetowidechar (cp_acp, 0, (lpctstr) strgbk,-1, wszutf8, Len );

Len = widechartomultibyte (cp_utf8, 0, wszutf8,-1, null, 0, null, null );
Char * szutf8 = new char [Len + 1];
Memset (szutf8, 0, Len + 1 );
Widechartomultibyte (cp_utf8, 0, wszutf8,-1, szutf8, Len, null, null );
 
Strgbk = szutf8;
Delete [] szutf8;
Delete [] wszutf8;
}
 

5. UTF-8 to GBK

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Void convertutf8togbk (cstring & strutf8)
{
Int Len = multibytetowidechar (cp_utf8, 0, (lpctstr) strutf8,-1, null, 0 );
Unsigned short * wszgbk = new unsigned short [Len + 1];
Memset (wszgbk, 0, Len * 2 + 2 );
Multibytetowidechar (cp_utf8, 0, (lpctstr) strutf8,-1, wszgbk, Len );

Len = widechartomultibyte (cp_acp, 0, wszgbk,-1, null, 0, null, null );
Char * szgbk = new char [Len + 1];
Memset (szgbk, 0, Len + 1 );
Widechartomultibyte (cp_acp, 0, wszgbk,-1, szgbk, Len, null, null );

Strutf8 = szgbk;
Delete [] szgbk;
Delete [] wszgbk;
}
Void convertutf8togbk (cstring & strutf8)
{
Int Len = multibytetowidechar (cp_utf8, 0, (lpctstr) strutf8,-1, null, 0 );
Unsigned short * wszgbk = new unsigned short [Len + 1];
Memset (wszgbk, 0, Len * 2 + 2 );
Multibytetowidechar (cp_utf8, 0, (lpctstr) strutf8,-1, wszgbk, Len );

Len = widechartomultibyte (cp_acp, 0, wszgbk,-1, null, 0, null, null );
Char * szgbk = new char [Len + 1];
Memset (szgbk, 0, Len + 1 );
Widechartomultibyte (cp_acp, 0, wszgbk,-1, szgbk, Len, null, null );
 
Strutf8 = szgbk;
Delete [] szgbk;
Delete [] wszgbk;
}
 

6. Read and Write Unicode files.

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Wchar_t * readufile (wchar_t * path)
{
Cstdiofileex fileex;
Fileex. setcodepage (cp_utf8 );
Cstring stext, Sline;

If (fileex. Open (path, cfile: moderead | cfile: typetext ))
{

// Read first 15 lines
For (short nlinecount = 0; nlinecount <16 & fileex. readstring (Sline); nlinecount ++)
{
Stext + = Sline + snewline;
}
Fileex. Close ();
}
Return sresult. getbuffer (sresult. getlength ());
}


Bool writeufile (wchar_t * path, wchar_t * content)
{
Cstdiofileex fileex;
Fileex. setcodepage (cp_utf8 );
Cstring stext, Sline;
Uint nwriteflags = cfile: modecreate | cfile: modewrite | cfile: typetext;
// Nwriteflags | = cstdiofileex: modewriteunicode;
If (fileex. Open (path, nwriteflags ))
{
Cstring scontent = content;
Fileex. writestring (scontent );
Fileex. Close ();
Return true;
}
Else
{
Return false;
}
}
Wchar_t * readufile (wchar_t * path)
{
Cstdiofileex fileex;
Fileex. setcodepage (cp_utf8 );
Cstring stext, Sline;
 
If (fileex. Open (path, cfile: moderead | cfile: typetext ))
{

// Read first 15 lines
For (short nlinecount = 0; nlinecount <16 & fileex. readstring (Sline); nlinecount ++)
{
Stext + = Sline + snewline;
}
Fileex. Close ();
}
Return sresult. getbuffer (sresult. getlength ());
}

Bool writeufile (wchar_t * path, wchar_t * content)
{
Cstdiofileex fileex;
Fileex. setcodepage (cp_utf8 );
Cstring stext, Sline;
Uint nwriteflags = cfile: modecreate | cfile: modewrite | cfile: typetext;
// Nwriteflags | = cstdiofileex: modewriteunicode;
If (fileex. Open (path, nwriteflags ))
{
Cstring scontent = content;
Fileex. writestring (scontent );
Fileex. Close ();
Return true;
}
Else
{
Return false;
}
}
 

Here cstdiofileex,: http://files.cnblogs.com/tingsking/StdioFileEx.zip is used

7. Send an HTTP request

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Void sendhttp ()
{
Cstring strdata = "cardno = 123456 & Address = Zhang San ";

Convertgbktoutf8 (strdata );
Try
{
DWORD dwservicetype = afx_inet_service_http;
Cstring szserver, szobject;
Internet_port nport;
Cstring URL;
Getdlgitemtext (idc_edit_address, URL );
Afxparseurl (URL, dwservicetype, szserver, szobject, nport );
Cinternetsession session;
Chttpconnection * phttpconnect = session. gethttpconnection (szserver, internet_flag_keep_connection, nport, null, null );
If (phttpconnect)
{
Chttpfile * pfile = phttpconnect-> openrequest (chttpconnection: http_verb_post, szobject );
If (pfile)
{
Cstring strhead = _ T ("Content-Type: Application/X-WWW-form-urlencoded ");
Pfile-> addrequestheaders ("accept :*/*");
Pfile-> addrequestheaders ("Accept-language: ZH-CN ");
Pfile-> addrequestheaders ("Accept-encoding: gzip ");
Pfile-> addrequestheaders ("Accept-charset: UTF-8 ");
Ret = pfile-> sendrequest (strhead, (lpvoid) (lpctstr) strdata, strdata. getlength ());

Pfile-> close ();
Delete pfile;
}


Phttpconnect-> close ();
Delete phttpconnect;
}
}
Catch (cinternetexception * E)
{
E-> Delete ();
}
}
Void sendhttp ()
{
Cstring strdata = "cardno = 123456 & Address = Zhang San ";

Convertgbktoutf8 (strdata );
Try
{
DWORD dwservicetype = afx_inet_service_http;
Cstring szserver, szobject;
Internet_port nport;
Cstring URL;
Getdlgitemtext (idc_edit_address, URL );
Afxparseurl (URL, dwservicetype, szserver, szobject, nport );
Cinternetsession session;
Chttpconnection * phttpconnect = session. gethttpconnection (szserver, internet_flag_keep_connection, nport, null, null );
If (phttpconnect)
{
Chttpfile * pfile = phttpconnect-> openrequest (chttpconnection: http_verb_post, szobject );
If (pfile)
{
Cstring strhead = _ T ("Content-Type: Application/X-WWW-form-urlencoded ");
Pfile-> addrequestheaders ("accept :*/*");
Pfile-> addrequestheaders ("Accept-language: ZH-CN ");
Pfile-> addrequestheaders ("Accept-encoding: gzip ");
Pfile-> addrequestheaders ("Accept-charset: UTF-8 ");
Ret = pfile-> sendrequest (strhead, (lpvoid) (lpctstr) strdata, strdata. getlength ());

Pfile-> close ();
Delete pfile;
}


Phttpconnect-> close ();
Delete phttpconnect;
}
}
Catch (cinternetexception * E)
{
E-> Delete ();
}
}

 

Reprinted: http://blog.csdn.net/tingsking18/archive/2010/08/10/5801695.aspx