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b311480e | 1 | // Created on: 2001-10-01 |
2 | // Created by: Julia DOROVSKIKH | |
973c2be1 | 3 | // Copyright (c) 2001-2014 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 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. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
7fd59977 | 15 | |
16 | #ifndef LDOM_OSStream_HeaderFile | |
17 | #define LDOM_OSStream_HeaderFile | |
18 | ||
6a38ff48 | 19 | #include <NCollection_DefineAlloc.hxx> |
70167e69 | 20 | #include <NCollection_BaseAllocator.hxx> |
7fd59977 | 21 | #include <Standard_OStream.hxx> |
7fd59977 | 22 | |
7fd59977 | 23 | #include <stdio.h> /* EOF */ |
24 | ||
04232180 | 25 | //! Class LDOM_SBuffer inherits std::streambuf and |
e071e038 | 26 | //! redefines some virtual methods of it (overflow() and xsputn()). |
27 | //! This class contains pointers on first and current element | |
28 | //! of sequence, also it has methods for the sequence management. | |
29 | class LDOM_SBuffer : public std::streambuf | |
7fd59977 | 30 | { |
e071e038 | 31 | //! One element of sequence. |
32 | //! Can only be allocated by the allocator and assumes | |
33 | //! it is IncAllocator, so destructor isn't required. | |
6a38ff48 | 34 | struct LDOM_StringElem |
35 | { | |
36 | char* buf; //!< pointer on data string | |
37 | int len; //!< quantity of really written data | |
38 | LDOM_StringElem* next; //!< pointer on the next element of a sequence | |
39 | ||
40 | DEFINE_NCOLLECTION_ALLOC | |
41 | ||
35c0599a | 42 | LDOM_StringElem(const int, const Handle(NCollection_BaseAllocator)&); |
6a38ff48 | 43 | ~LDOM_StringElem(); |
44 | ||
45 | private: | |
46 | LDOM_StringElem (const LDOM_StringElem&); | |
47 | LDOM_StringElem& operator= (const LDOM_StringElem&); | |
48 | }; | |
49 | ||
50 | public: | |
e071e038 | 51 | //! Constructor. Sets a default value for the |
52 | //! length of each sequence element. | |
7fd59977 | 53 | Standard_EXPORT LDOM_SBuffer (const Standard_Integer theMaxBuf); |
7fd59977 | 54 | |
e071e038 | 55 | //! Concatenates strings of all sequence elements |
56 | //! into one string. Space for output string is allocated | |
57 | //! with operator new. | |
58 | //! Caller of this function is responsible | |
59 | //! for memory release after the string usage. | |
7fd59977 | 60 | Standard_EXPORT Standard_CString str () const; |
7fd59977 | 61 | |
e071e038 | 62 | //! Returns full length of data contained |
5640d653 | 63 | Standard_Integer Length () const {return myLength;} |
7fd59977 | 64 | |
e071e038 | 65 | //! Clears first element of sequence and removes all others |
7fd59977 | 66 | Standard_EXPORT void Clear (); |
7fd59977 | 67 | |
04232180 | 68 | // Methods of std::streambuf |
7fd59977 | 69 | |
e071e038 | 70 | Standard_EXPORT virtual int overflow(int c = EOF) Standard_OVERRIDE; |
71 | Standard_EXPORT virtual int underflow() Standard_OVERRIDE; | |
72 | //virtual int uflow(); | |
7fd59977 | 73 | |
e071e038 | 74 | Standard_EXPORT virtual std::streamsize xsputn(const char* s, std::streamsize n) Standard_OVERRIDE; |
75 | //virtual int xsgetn(char* s, int n); | |
76 | //virtual int sync(); | |
7fd59977 | 77 | |
78 | Standard_EXPORT ~LDOM_SBuffer (); | |
79 | // Destructor | |
80 | ||
6a38ff48 | 81 | private: |
82 | ||
7fd59977 | 83 | Standard_Integer myMaxBuf; // default length of one element |
84 | Standard_Integer myLength; // full length of contained data | |
85 | LDOM_StringElem* myFirstString; // the head of the sequence | |
86 | LDOM_StringElem* myCurString; // current element of the sequence | |
70167e69 | 87 | Handle(NCollection_BaseAllocator) myAlloc; //allocator for chunks |
7fd59977 | 88 | }; |
89 | ||
e071e038 | 90 | //! Subclass if std::ostream allowing to increase performance |
91 | //! of outputting data into a string avoiding reallocation of buffer. | |
92 | //! Class LDOM_OSStream implements output into a sequence of | |
93 | //! strings and getting the result as a string. | |
04232180 | 94 | //! It inherits Standard_OStream (std::ostream). |
95 | //! Beside methods of std::ostream, it also has additional | |
e071e038 | 96 | //! useful methods: str(), Length() and Clear(). |
7fd59977 | 97 | class LDOM_OSStream : public Standard_OStream |
98 | { | |
e071e038 | 99 | public: |
100 | //! Constructor | |
101 | Standard_EXPORT LDOM_OSStream(const Standard_Integer theMaxBuf); | |
7fd59977 | 102 | |
6531dfea BB |
103 | Standard_EXPORT virtual ~LDOM_OSStream(); |
104 | ||
5640d653 | 105 | Standard_CString str () const {return myBuffer.str();} |
7fd59977 | 106 | |
e071e038 | 107 | Standard_Integer Length () const { return myBuffer.Length(); } |
7fd59977 | 108 | |
5640d653 | 109 | void Clear () { myBuffer.Clear(); } |
7fd59977 | 110 | |
111 | private: | |
112 | LDOM_SBuffer myBuffer; | |
8f34d47e | 113 | |
114 | public: | |
115 | // byte order mark defined at the start of a stream | |
116 | enum BOMType { | |
117 | BOM_UNDEFINED, | |
118 | BOM_UTF8, | |
119 | BOM_UTF16BE, | |
120 | BOM_UTF16LE, | |
121 | BOM_UTF32BE, | |
122 | BOM_UTF32LE, | |
123 | BOM_UTF7, | |
124 | BOM_UTF1, | |
125 | BOM_UTFEBCDIC, | |
126 | BOM_SCSU, | |
127 | BOM_BOCU1, | |
128 | BOM_GB18030 | |
129 | }; | |
7fd59977 | 130 | }; |
131 | ||
132 | #endif |