diff options
Diffstat (limited to 'usr.bin/vi/vi/v_delete.c')
| -rw-r--r-- | usr.bin/vi/vi/v_delete.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/usr.bin/vi/vi/v_delete.c b/usr.bin/vi/vi/v_delete.c new file mode 100644 index 000000000000..aa2af9814e95 --- /dev/null +++ b/usr.bin/vi/vi/v_delete.c @@ -0,0 +1,160 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * 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 8.14 (Berkeley) 7/28/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/time.h> + +#include <bitstring.h> +#include <limits.h> +#include <signal.h> +#include <stdio.h> +#include <termios.h> + +#include "compat.h" +#include <db.h> +#include <regex.h> + +#include "vi.h" +#include "vcmd.h" + +/* + * v_Delete -- [buffer][count]D + * Delete line command. + */ +int +v_Delete(sp, ep, vp) + SCR *sp; + EXF *ep; + VICMDARG *vp; +{ + recno_t lno; + size_t len; + + if (file_gline(sp, ep, vp->m_start.lno, &len) == NULL) { + if (file_lline(sp, ep, &lno)) + return (1); + if (lno == 0) + return (0); + GETLINE_ERR(sp, vp->m_start.lno); + return (1); + } + + if (len == 0) + return (0); + + vp->m_stop.lno = vp->m_start.lno; + vp->m_stop.cno = len - 1; + + /* Yank the lines. */ + if (cut(sp, ep, + F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, + &vp->m_start, &vp->m_stop, CUT_NUMOPT)) + return (1); + if (delete(sp, ep, &vp->m_start, &vp->m_stop, 0)) + return (1); + + vp->m_final.lno = vp->m_start.lno; + vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0; + return (0); +} + +/* + * v_delete -- [buffer][count]d[count]motion + * Delete a range of text. + */ +int +v_delete(sp, ep, vp) + SCR *sp; + EXF *ep; + VICMDARG *vp; +{ + recno_t nlines; + size_t len; + int lmode; + + lmode = F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0; + + /* Yank the lines. */ + if (cut(sp, ep, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, + &vp->m_start, &vp->m_stop, + lmode | (F_ISSET(vp, VM_CUTREQ) ? CUT_NUMREQ : CUT_NUMOPT))) + return (1); + + /* Delete the lines. */ + if (delete(sp, ep, &vp->m_start, &vp->m_stop, lmode)) + return (1); + + /* + * Check for deletion of the entire file. Try to check a close + * by line so we don't go to the end of the file unnecessarily. + */ + if (file_gline(sp, ep, vp->m_final.lno + 1, &len) == NULL) { + if (file_lline(sp, ep, &nlines)) + return (1); + if (nlines == 0) { + vp->m_final.lno = 1; + vp->m_final.cno = 0; + return (0); + } + } + + /* + * One special correction, in case we've deleted the current line or + * character. We check it here instead of checking in every command + * that can be a motion component. + */ + if (file_gline(sp, ep, vp->m_final.lno, &len) == NULL) { + if (file_gline(sp, ep, nlines, &len) == NULL) { + GETLINE_ERR(sp, nlines); + return (1); + } + vp->m_final.lno = nlines; + } + if (vp->m_final.cno >= len) + vp->m_final.cno = len ? len - 1 : 0; + + /* + * !!! + * The "dd" command moved to the first non-blank; "d<motion>" didn't. + */ + if (F_ISSET(vp, VM_LDOUBLE)) { + F_CLR(vp, VM_RCM_MASK); + F_SET(vp, VM_RCM_SETFNB); + } + return (0); +} |