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32 lines
796 B
C
32 lines
796 B
C
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/*
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* STEVIE - Simply Try this Editor for VI Enthusiasts
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*
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* Code Contributions By : Tim Thompson twitch!tjt
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* Tony Andrews onecom!wldrdg!tony
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* G. R. (Fred) Walter watmath!grwalter
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*/
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#include "stevie.h"
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/*
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* dec(p)
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*
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* Decrement the line pointer 'p' crossing line boundaries as necessary. Return
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* 1 when crossing a line, -1 when at start of file, 0 otherwise.
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*/
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int
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dec(LPtr *lp)
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{
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if (lp->index > 0) { /* still within line */
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lp->index--;
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return 0;
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}
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if (lp->linep->prev != Filetop->linep) { /* there is a prior line */
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lp->linep = lp->linep->prev;
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lp->index = strlen(lp->linep->s);
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return 1;
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}
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lp->index = 0; /* stick at first char */
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return -1; /* at start of file */
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}
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