212 lines
3.7 KiB
C++
212 lines
3.7 KiB
C++
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/*++
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Copyright (c) 1991-2000 Microsoft Corporation
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Module Name:
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PAGER
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Abstract:
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This module contains the definition for the PAGER class, used by
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the "More" utility
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Author:
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Ramon Juan San Andres (RamonSA) 15-Apr-1990
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Notes:
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--*/
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#if !defined (_PAGER_)
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#define _PAGER_
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#include "object.hxx"
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#include "wstring.hxx"
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#include "bstring.hxx"
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#include "stream.hxx"
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//
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// Forward references
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//
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DECLARE_CLASS( SCREEN );
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DECLARE_CLASS( PROGRAM );
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DECLARE_CLASS( PAGER );
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class PAGER : public OBJECT {
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public:
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DECLARE_CONSTRUCTOR( PAGER );
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DECLARE_CAST_MEMBER_FUNCTION( PAGER );
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NONVIRTUAL
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~PAGER (
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);
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NONVIRTUAL
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BOOLEAN
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Initialize (
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IN PSTREAM Stream,
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IN PPROGRAM Program
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);
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NONVIRTUAL
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VOID
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ClearLine (
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);
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NONVIRTUAL
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VOID
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DisplayBlankLine (
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IN ULONG Lines,
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IN BOOLEAN NewLine DEFAULT TRUE
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);
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NONVIRTUAL
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BOOLEAN
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DisplayPage (
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IN ULONG LinesInPage,
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IN BOOLEAN ClearScreen,
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IN BOOLEAN SqueezeBlankLines,
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IN BOOLEAN ExpandFormFeed,
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IN ULONG TabExp
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);
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NONVIRTUAL
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VOID
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DisplayString (
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IN PWSTRING String,
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OUT PCHNUM Position,
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IN CHNUM Length,
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IN BOOLEAN NewLine DEFAULT TRUE
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);
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NONVIRTUAL
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BOOLEAN
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ThereIsMoreToPage (
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);
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NONVIRTUAL
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ULONGLONG
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QueryCurrentByte (
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);
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NONVIRTUAL
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ULONG
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QueryCurrentLine (
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);
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NONVIRTUAL
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USHORT
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QueryLinesPerPage (
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);
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NONVIRTUAL
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BOOLEAN
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SkipLines (
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IN ULONG LinesToSkip,
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IN ULONG TabExp
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);
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#ifdef FE_SB // v-junm - 09/24/93
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BOOLEAN
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IsLeadByte(
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IN BYTE c
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);
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#endif
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private:
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VOID
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Construct (
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);
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NONVIRTUAL
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BOOLEAN
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ReadNextString (
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IN ULONG TabExp
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);
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PSTREAM _Stream; // Stream to page
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ULONG _CurrentLineNumber; // Current line number
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ULONG _RowsInPage; // Rows per page
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USHORT _ColumnsInPage; // Columns per page
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USHORT _ColumnsInScreen; // Columns in screen
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PWSTRING _String; // String with line
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CHNUM _Position; // Position within String
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PSCREEN _Screen; // Pointer to screen
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PSTREAM _StandardOutput; // Standard output
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PWSTRING _Blanks; // Blank characters
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PWSTRING _BlankLine; // A line of blanks
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PBSTRING _BString; // Temp ASCII buffer by PAGER::ReadNextString
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};
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INLINE
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BOOLEAN
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PAGER::ThereIsMoreToPage (
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)
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/*++
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Routine Description:
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Finds out if there is more stuff to page
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Arguments:
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none
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Return Value:
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True if there is more to page
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FALSE otherwise
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--*/
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{
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return !(_Stream->IsAtEnd());
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}
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INLINE
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ULONG
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PAGER::QueryCurrentLine (
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)
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/*++
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Routine Description:
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Queries the current line number
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Arguments:
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none
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Return Value:
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The current line number
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--*/
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{
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return _CurrentLineNumber;
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}
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#endif // __PAGER__
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