include/wx/txtstrm.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        txtstrm.h
   3 // Purpose:     Text stream classes
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     28/06/1998
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_TXTSTREAM_H_
  13 #define _WX_TXTSTREAM_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16 #pragma interface "txtstrm.h"
  17 #endif
  18
  19 #include "wx/stream.h"
  20
  21 #if wxUSE_STREAMS
  22
  23 class WXDLLIMPEXP_BASE wxTextInputStream;
  24 class WXDLLIMPEXP_BASE wxTextOutputStream;
  25
  26 typedef wxTextInputStream& (*__wxTextInputManip)(wxTextInputStream&);
  27 typedef wxTextOutputStream& (*__wxTextOutputManip)(wxTextOutputStream&);
  28
  29 WXDLLIMPEXP_BASE wxTextOutputStream &endl( wxTextOutputStream &stream );
  30
  31
  32 #define wxEOT wxT('\4') // the End-Of-Text control code (used only inside wxTextInputStream)
  33
  34 // If you're scanning through a file using wxTextInputStream, you should check for EOF _before_
  35 // reading the next item (word / number), because otherwise the last item may get lost.
  36 // You should however be prepared to receive an empty item (empty string / zero number) at the
  37 // end of file, especially on Windows systems. This is unavoidable because most (but not all) files end
  38 // with whitespace (i.e. usually a newline).
  39 class WXDLLIMPEXP_BASE wxTextInputStream
  40 {
  41 public:
  42 #if wxUSE_UNICODE
  43     wxTextInputStream(wxInputStream& s, const wxString &sep=wxT(" \t"), wxMBConv& conv = wxConvUTF8 );
  44 #else
  45     wxTextInputStream(wxInputStream& s, const wxString &sep=wxT(" \t") );
  46 #endif
  47     ~wxTextInputStream();
  48
  49     wxUint32 Read32(int base = 10); // base may be between 2 and 36, inclusive, or the special 0 (= C format)
  50     wxUint16 Read16(int base = 10);
  51     wxUint8  Read8(int base = 10);
  52     wxInt32  Read32S(int base = 10);
  53     wxInt16  Read16S(int base = 10);
  54     wxInt8   Read8S(int base = 10);
  55     double   ReadDouble();
  56     wxString ReadString();  // deprecated: use ReadLine or ReadWord instead
  57     wxString ReadLine();
  58     wxString ReadWord();
  59     wxChar   GetChar() { wxChar c = NextChar(); return c != wxEOT ? c : 0; }
  60
  61     wxString GetStringSeparators() const { return m_separators; }
  62     void SetStringSeparators(const wxString &c) { m_separators = c; }
  63
  64     // Operators
  65     wxTextInputStream& operator>>(wxString& word);
  66     wxTextInputStream& operator>>(char& c);
  67     wxTextInputStream& operator>>(wxInt16& i);
  68     wxTextInputStream& operator>>(wxInt32& i);
  69     wxTextInputStream& operator>>(wxUint16& i);
  70     wxTextInputStream& operator>>(wxUint32& i);
  71     wxTextInputStream& operator>>(double& i);
  72     wxTextInputStream& operator>>(float& f);
  73
  74     wxTextInputStream& operator>>( __wxTextInputManip func) { return func(*this); }
  75
  76 protected:
  77     wxInputStream &m_input;
  78     wxString m_separators;
  79     char m_lastBytes[10]; // stores the bytes that were read for the last character
  80
  81 #if wxUSE_UNICODE
  82     wxMBConv &m_conv;
  83 #endif
  84
  85     bool   EatEOL(const wxChar &c);
  86     void   UngetLast(); // should be used instead of wxInputStream::Ungetch() because of Unicode issues
  87     // returns EOT (\4) if there is a stream error, or end of file
  88     wxChar NextChar();   // this should be used instead of GetC() because of Unicode issues
  89     wxChar NextNonSeparators();
  90
  91     DECLARE_NO_COPY_CLASS(wxTextInputStream)
  92 };
  93
  94 typedef enum
  95 {
  96   wxEOL_NATIVE,
  97   wxEOL_UNIX,
  98   wxEOL_MAC,
  99   wxEOL_DOS
 100 } wxEOL;
 101
 102 class WXDLLIMPEXP_BASE wxTextOutputStream
 103 {
 104 public:
 105 #if wxUSE_UNICODE
 106     wxTextOutputStream( wxOutputStream& s, wxEOL mode = wxEOL_NATIVE, wxMBConv& conv = wxConvUTF8  );
 107 #else
 108     wxTextOutputStream( wxOutputStream& s, wxEOL mode = wxEOL_NATIVE );
 109 #endif
 110     virtual ~wxTextOutputStream();
 111
 112     void SetMode( wxEOL mode = wxEOL_NATIVE );
 113     wxEOL GetMode() { return m_mode; }
 114
 115     void Write32(wxUint32 i);
 116     void Write16(wxUint16 i);
 117     void Write8(wxUint8 i);
 118     virtual void WriteDouble(double d);
 119     virtual void WriteString(const wxString& string);
 120
 121     wxTextOutputStream& operator<<(const wxChar *string);
 122     wxTextOutputStream& operator<<(const wxString& string);
 123     wxTextOutputStream& operator<<(char c);
 124     wxTextOutputStream& operator<<(wxInt16 c);
 125     wxTextOutputStream& operator<<(wxInt32 c);
 126     wxTextOutputStream& operator<<(wxUint16 c);
 127     wxTextOutputStream& operator<<(wxUint32 c);
 128     wxTextOutputStream& operator<<(double f);
 129     wxTextOutputStream& operator<<(float f);
 130
 131     wxTextOutputStream& operator<<( __wxTextOutputManip func) { return func(*this); }
 132
 133 protected:
 134     wxOutputStream &m_output;
 135     wxEOL           m_mode;
 136
 137 #if wxUSE_UNICODE
 138     wxMBConv &m_conv;
 139 #endif
 140
 141     DECLARE_NO_COPY_CLASS(wxTextOutputStream)
 142 };
 143
 144 #endif
 145   // wxUSE_STREAMS
 146
 147 #endif
 148     // _WX_DATSTREAM_H_