diff options
Diffstat (limited to 'usr.bin/vi/nvi/v_delete.c')
| -rw-r--r-- | usr.bin/vi/nvi/v_delete.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/usr.bin/vi/nvi/v_delete.c b/usr.bin/vi/nvi/v_delete.c new file mode 100644 index 000000000000..241ddf654f2e --- /dev/null +++ b/usr.bin/vi/nvi/v_delete.c @@ -0,0 +1,147 @@ +/*- + * 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_delete.c 8.7 (Berkeley) 1/11/94"; +#endif /* not lint */ + +#include <sys/types.h> + +#include "vi.h" +#include "vcmd.h" + +/* + * v_Delete -- [buffer][count]D + * Delete line command. + */ +int +v_Delete(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + recno_t lno; + size_t len; + + if (file_gline(sp, ep, fm->lno, &len) == NULL) { + if (file_lline(sp, ep, &lno)) + return (1); + if (lno == 0) + return (0); + GETLINE_ERR(sp, fm->lno); + return (1); + } + + if (len == 0) + return (0); + + tm->lno = fm->lno; + tm->cno = len; + + /* Yank the lines. */ + if (cut(sp, ep, NULL, + F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, fm, tm, CUT_DELETE)) + return (1); + if (delete(sp, ep, fm, tm, 0)) + return (1); + + rp->lno = fm->lno; + rp->cno = fm->cno ? fm->cno - 1 : 0; + return (0); +} + +/* + * v_delete -- [buffer][count]d[count]motion + * Delete a range of text. + */ +int +v_delete(sp, ep, vp, fm, tm, rp) + SCR *sp; + EXF *ep; + VICMDARG *vp; + MARK *fm, *tm, *rp; +{ + recno_t nlines; + size_t len; + int lmode; + + /* Yank the lines. */ + lmode = F_ISSET(vp, VC_LMODE) ? CUT_LINEMODE : 0; + if (cut(sp, ep, NULL, + F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, + fm, tm, lmode | CUT_DELETE)) + return (1); + if (delete(sp, ep, fm, tm, lmode)) + return (1); + + /* Check for deleting the file. */ + if (file_lline(sp, ep, &nlines)) + return (1); + if (nlines == 0) { + rp->lno = 1; + rp->cno = 0; + return (0); + } + + /* + * If deleting lines, leave the cursor at the lowest line deleted, + * else, leave the cursor where it started. Always correct for EOL. + * + * The historic vi would delete the line the cursor was on (even if + * not in line mode) if the motion from the cursor was past the EOF + * and the cursor didn't originate on the last line of the file. A + * strange special case. We never delete the line the cursor is on. + * We'd have to pass a flag down to the delete() routine which would + * have to special case it. + */ + if (lmode) { + rp->lno = MIN(fm->lno, tm->lno); + if (rp->lno > nlines) + rp->lno = nlines; + rp->cno = 0; + (void)nonblank(sp, ep, rp->lno, &rp->cno); + return (0); + } + + rp->lno = fm->lno; + if (file_gline(sp, ep, rp->lno, &len) == NULL) { + GETLINE_ERR(sp, rp->lno); + return (1); + } + if (fm->cno >= len) + rp->cno = len ? len - 1 : 0; + else + rp->cno = fm->cno; + return (0); +} |