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The Fred Fish Collection 1.5
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ffcollection-1-5-1992-11.iso
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100-199
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ff197.lzh
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Stevie
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macros.h
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1989-03-28
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2KB
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81 lines
/*
* STEVIE - Simply Try this Editor for VI Enthusiasts
*
* Code Contributions By : Tim Thompson twitch!tjt
* Tony Andrews onecom!wldrdg!tony
* G. R. (Fred) Walter watmath!watcgl!grwalter
*/
/*
* gchar(lp) - get the character at position "lp"
*/
#define gchar(lp) ((lp)->linep->s[(lp)->index])
/*
* pchar(lp, c) - put character 'c' at position 'lp'
*/
#define pchar(lp, c) ((lp)->linep->s[(lp)->index] = (c))
/*
* pswap(a, b) - swap two position pointers
*/
#define pswap(a, b) { LPtr pswaptmp; pswaptmp = a; a = b; b = pswaptmp; }
/*
* Position comparisons
*/
#define lt(a, b) ((LINEOF(a) != LINEOF(b)) \
? (LINEOF(a) < LINEOF(b)) : ((a)->index < (b)->index))
#define ltoreq(a, b) ((LINEOF(a) != LINEOF(b)) \
? (LINEOF(a) < LINEOF(b)) : ((a)->index <= (b)->index))
#define gt(a, b) ((LINEOF(a) != LINEOF(b)) \
? (LINEOF(a) > LINEOF(b)) : ((a)->index > (b)->index))
#define gtoreq(a, b) ((LINEOF(a) != LINEOF(b)) \
? (LINEOF(a) > LINEOF(b)) : ((a)->index >= (b)->index))
#define equal(a, b) (((a)->linep == (b)->linep) && ((a)->index == (b)->index))
/*
* anyinput
*
* Return non-zero if input is pending.
*/
#define anyinput() (Readbuffptr != NULL)
/*
* buf1line() - return TRUE if there is only one line in file buffer
*/
#define buf1line() (Filemem->linep->next == Fileend->linep)
/*
* bufempty() - return TRUE if the file buffer is empty
*/
#define bufempty() (buf1line() && Filemem->linep->s[0] == NUL)
/*
* lineempty() - return TRUE if the line is empty
*/
#define lineempty(p) ((p)->linep->s[0] == NUL)
/*
* startofline() - return TRUE if the given position is at start of line
*/
#define startofline(p) ((p)->index == 0)
/*
* endofline() - return TRUE if the given position is at end of line
*
* This routine will probably never be called with a position resting on the NUL
* byte, but handle it correctly in case it happens.
*/
#define endofline(p) \
((p)->linep->s[(p)->index] == NUL || (p)->linep->s[(p)->index + 1] == NUL)
/*
* RowNumber() - return the row number (if no UndoInProgress)
*/
#define RowNumber(p) (UndoInProgress ? 0 : cntllines(Filemem, (p)))