1 /*- 2 * Copyright (c) 1992, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1992, 1993, 1994, 1995, 1996 5 * Keith Bostic. All rights reserved. 6 * 7 * See the LICENSE file for redistribution information. 8 */ 9 10 #include "config.h" 11 12 #ifndef lint 13 static const char sccsid[] = "@(#)ex_delete.c 10.9 (Berkeley) 10/23/96"; 14 #endif /* not lint */ 15 16 #include <sys/types.h> 17 #include <sys/queue.h> 18 19 #include <bitstring.h> 20 #include <limits.h> 21 #include <stdio.h> 22 23 #include "../common/common.h" 24 25 /* 26 * ex_delete: [line [,line]] d[elete] [buffer] [count] [flags] 27 * 28 * Delete lines from the file. 29 * 30 * PUBLIC: int ex_delete __P((SCR *, EXCMD *)); 31 */ 32 int 33 ex_delete(sp, cmdp) 34 SCR *sp; 35 EXCMD *cmdp; 36 { 37 recno_t lno; 38 39 NEEDFILE(sp, cmdp); 40 41 /* 42 * !!! 43 * Historically, lines deleted in ex were not placed in the numeric 44 * buffers. We follow historic practice so that we don't overwrite 45 * vi buffers accidentally. 46 */ 47 if (cut(sp, 48 FL_ISSET(cmdp->iflags, E_C_BUFFER) ? &cmdp->buffer : NULL, 49 &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE)) 50 return (1); 51 52 /* Delete the lines. */ 53 if (del(sp, &cmdp->addr1, &cmdp->addr2, 1)) 54 return (1); 55 56 /* Set the cursor to the line after the last line deleted. */ 57 sp->lno = cmdp->addr1.lno; 58 59 /* Or the last line in the file if deleted to the end of the file. */ 60 if (db_last(sp, &lno)) 61 return (1); 62 if (sp->lno > lno) 63 sp->lno = lno; 64 return (0); 65 } 66