| 1 | // Created on: 2001-10-01 |
| 2 | // Created by: Julia DOROVSKIKH |
| 3 | // Copyright (c) 2001-2014 OPEN CASCADE SAS |
| 4 | // |
| 5 | // This file is part of Open CASCADE Technology software library. |
| 6 | // |
| 7 | // This library is free software; you can redistribute it and / or modify it |
| 8 | // under the terms of the GNU Lesser General Public version 2.1 as published |
| 9 | // by the Free Software Foundation, with special exception defined in the file |
| 10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 11 | // distribution for complete text of the license and disclaimer of any warranty. |
| 12 | // |
| 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 14 | // commercial license or contractual agreement. |
| 15 | |
| 16 | #ifndef LDOM_OSStream_HeaderFile |
| 17 | #define LDOM_OSStream_HeaderFile |
| 18 | |
| 19 | // This implementation allows to increase performance |
| 20 | // of outputting data into a string |
| 21 | // avoiding reallocation of buffer. |
| 22 | // class LDOM_OSStream implements output into a sequence of |
| 23 | // strings and getting the result as a string. |
| 24 | // It inherits Standard_OStream (ostream). |
| 25 | // Beside methods of ostream, it also has additional |
| 26 | // useful methods: str(), Length() and Clear(). |
| 27 | // struct LDOM_StringElem is one element of internal sequence |
| 28 | // class LDOM_SBuffer inherits streambuf and |
| 29 | // redefines some virtual methods of it |
| 30 | // (overflow() and xsputn()) |
| 31 | // This class contains pointers on first |
| 32 | // and current element of sequence, |
| 33 | // also it has methods for the sequence management. |
| 34 | |
| 35 | #include <Standard_OStream.hxx> |
| 36 | #include <Standard_Boolean.hxx> |
| 37 | |
| 38 | #include <stdlib.h> |
| 39 | #include <stdio.h> /* EOF */ |
| 40 | |
| 41 | class LDOM_StringElem; // defined in cxx file |
| 42 | |
| 43 | class LDOM_SBuffer : public streambuf |
| 44 | { |
| 45 | public: |
| 46 | Standard_EXPORT LDOM_SBuffer (const Standard_Integer theMaxBuf); |
| 47 | // Constructor. Sets a default value for the |
| 48 | // length of each sequence element. |
| 49 | |
| 50 | Standard_EXPORT Standard_CString str () const; |
| 51 | // Concatenates strings of all sequence elements |
| 52 | // into one string. Space for output string is allocated |
| 53 | // with operator new. |
| 54 | // Caller of this function is responsible |
| 55 | // for memory release after the string usage. |
| 56 | |
| 57 | Standard_Integer Length () const {return myLength;}; |
| 58 | // Returns full length of data contained |
| 59 | |
| 60 | Standard_EXPORT void Clear (); |
| 61 | // Clears first element of sequence and removes all others |
| 62 | |
| 63 | // Methods of streambuf |
| 64 | |
| 65 | Standard_EXPORT virtual int overflow(int c = EOF); |
| 66 | Standard_EXPORT virtual int underflow(); |
| 67 | //virtual int uflow(); |
| 68 | |
| 69 | Standard_EXPORT virtual int xsputn(const char* s, int n); |
| 70 | //virtual int xsgetn(char* s, int n); |
| 71 | //virtual int sync(); |
| 72 | |
| 73 | Standard_EXPORT ~LDOM_SBuffer (); |
| 74 | // Destructor |
| 75 | |
| 76 | private: |
| 77 | Standard_Integer myMaxBuf; // default length of one element |
| 78 | Standard_Integer myLength; // full length of contained data |
| 79 | LDOM_StringElem* myFirstString; // the head of the sequence |
| 80 | LDOM_StringElem* myCurString; // current element of the sequence |
| 81 | }; |
| 82 | |
| 83 | class LDOM_OSStream : public Standard_OStream |
| 84 | { |
| 85 | public: |
| 86 | Standard_EXPORT LDOM_OSStream (const Standard_Integer theMaxBuf); |
| 87 | // Constructor |
| 88 | |
| 89 | Standard_CString str () const {return myBuffer.str();}; |
| 90 | |
| 91 | Standard_Integer Length () const {return myBuffer.Length();}; |
| 92 | |
| 93 | void Clear () { myBuffer.Clear(); }; |
| 94 | |
| 95 | private: |
| 96 | LDOM_SBuffer myBuffer; |
| 97 | }; |
| 98 | |
| 99 | #endif |