/*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char sccsid[] = "@(#)v_xchar.c 8.1 (Berkeley) 6/9/93"; #endif /* not lint */ #include <sys/types.h> #include "vi.h" #include "vcmd.h" #define NODEL(sp) { \ msgq(sp, M_BERR, "No characters to delete."); \ return (1); \ } /* * v_xchar -- * Deletes the character(s) on which the cursor sits. */ int v_xchar(sp, ep, vp, fm, tm, rp) SCR *sp; EXF *ep; VICMDARG *vp; MARK *fm, *tm, *rp; { MARK m; recno_t lno; u_long cnt; size_t len; if (file_gline(sp, ep, fm->lno, &len) == NULL) { if (file_lline(sp, ep, &lno)) return (1); if (lno == 0) NODEL(sp); GETLINE_ERR(sp, fm->lno); return (1); } if (len == 0) NODEL(sp); cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; fm->lno = tm->lno = fm->lno; /* * Deleting from the cursor toward the end of line, w/o moving the * cursor. Note, "2x" at EOL isn't the same as "xx" because the * left movement of the cursor as part of the 'x' command isn't * taken into account. Historically correct. */ tm->lno = fm->lno; if (cnt < len - fm->cno) { tm->cno = fm->cno + cnt; m = *fm; } else { tm->cno = len; m.lno = fm->lno; m.cno = fm->cno ? fm->cno - 1 : 0; } if (cut(sp, ep, VICB(vp), fm, tm, 0) || delete(sp, ep, fm, tm, 0)) return (1); *rp = m; return (0); } /* * v_Xchar -- * Deletes the character(s) immediately before the current cursor * position. */ int v_Xchar(sp, ep, vp, fm, tm, rp) SCR *sp; EXF *ep; VICMDARG *vp; MARK *fm, *tm, *rp; { u_long cnt; if (fm->cno == 0) { msgq(sp, M_BERR, "Already at the left-hand margin."); return (1); } *tm = *fm; cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; fm->cno = cnt >= tm->cno ? 0 : tm->cno - cnt; if (cut(sp, ep, VICB(vp), fm, tm, 0) || delete(sp, ep, fm, tm, 0)) return (1); *rp = *fm; return (0); }