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- /* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- // -=- TCharArray.h
-
- // This library contains the wide-character equivalent of CharArray, named
- // WCharArray. In addition to providing wide-character equivalents of
- // the char* string manipulation functions (strDup, strFree, etc), special
- // versions of those functions are provided which attempt to convert from
- // one format to the other.
- // e.g. char* t = "hello world"; WCHAR* w = wstrDup(t);
- // Results in w containing the wide-character text "hello world".
- // For convenience, the WStr and CStr classes are also provided. These
- // accept an existing (const) WCHAR* or char* null-terminated string and
- // create a read-only copy of that in the desired format. The new copy
- // will actually be the original copy if the format has not changed, otherwise
- // it will be a new buffer owned by the WStr/CStr.
-
- // In addition to providing wide character functions, this header defines
- // TCHAR* handling classes & functions. TCHAR is defined at compile time to
- // either char or WCHAR. Programs can treat this as a third data type and
- // call TStr() whenever a TCHAR* is required but a char* or WCHAR* is supplied,
- // and TStr will do the right thing.
-
- #ifndef __RFB_WIN32_TCHARARRAY_H__
- #define __RFB_WIN32_TCHARARRAY_H__
-
- #include <windows.h>
- #include <tchar.h>
- #include <rfb/util.h>
- #include <rfb/Password.h>
-
- namespace rfb {
-
- // -=- String duplication and cleanup functions.
- // These routines also handle conversion between WCHAR* and char*
-
- char* strDup(const WCHAR* s);
- WCHAR* wstrDup(const WCHAR* s);
- WCHAR* wstrDup(const char* s);
- void wstrFree(WCHAR* s);
-
- bool wstrSplit(const WCHAR* src, const WCHAR limiter, WCHAR** out1, WCHAR** out2, bool fromEnd=false);
- bool wstrContains(const WCHAR* src, WCHAR c);
-
- // -=- Temporary format conversion classes
- // CStr accepts WCHAR* or char* and behaves like a char*
- // WStr accepts WCHAR* or char* and behaves like a WCHAR*
-
- struct WStr {
- WStr(const char* s) : buf(wstrDup(s)), free_(true) {}
- WStr(const WCHAR* s) : buf(s), free_(false) {}
- ~WStr() {if (free_) wstrFree((WCHAR*)buf);}
- operator const WCHAR*() {return buf;}
- const WCHAR* buf;
- bool free_;
- };
-
- struct CStr {
- CStr(const char* s) : buf(s), free_(false) {}
- CStr(const WCHAR* s) : buf(strDup(s)), free_(true) {}
- ~CStr() {if (free_) strFree((char*)buf);}
- operator const char*() {return buf;}
- const char* buf;
- bool free_;
- };
-
- // -=- Class to handle cleanup of arrays of native Win32 characters
- class WCharArray {
- public:
- WCharArray() : buf(0) {}
- WCharArray(char* str) : buf(wstrDup(str)) {strFree(str);} // note: assumes ownership
- WCharArray(WCHAR* str) : buf(str) {} // note: assumes ownership
- WCharArray(int len) {
- buf = new WCHAR[len];
- }
- ~WCharArray() {
- delete [] buf;
- }
- // Get the buffer pointer & clear it (i.e. caller takes ownership)
- WCHAR* takeBuf() {WCHAR* tmp = buf; buf = 0; return tmp;}
- void replaceBuf(WCHAR* str) {delete [] buf; buf = str;}
- WCHAR* buf;
- };
-
- // -=- Wide-character-based password-buffer handler. Zeroes the password
- // buffer when deleted or replaced.
- class WPlainPasswd : public WCharArray {
- public:
- WPlainPasswd() {}
- WPlainPasswd(WCHAR* str) : WCharArray(str) {}
- ~WPlainPasswd() {replaceBuf(0);}
- void replaceBuf(WCHAR* str) {
- if (buf)
- memset(buf, 0, sizeof(WCHAR)*wcslen(buf));
- WCharArray::replaceBuf(str);
- }
- };
-
- #ifdef _UNICODE
- #define tstrDup wstrDup
- #define tstrFree wstrFree
- #define tstrSplit wstrSplit
- #define tstrContains wstrContains
- typedef WCharArray TCharArray;
- typedef WStr TStr;
- typedef WPlainPasswd TPlainPasswd;
- #else
- #define tstrDup strDup
- #define tstrFree strFree
- #define tstrSplit strSplit
- #define tstrContains strContains
- typedef CharArray TCharArray;
- typedef CStr TStr;
- typedef PlainPasswd TPlainPasswd;
- #endif
-
- };
-
- #endif
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