diff options
Diffstat (limited to 'contrib/nvi/ex/ex_delete.c')
-rw-r--r-- | contrib/nvi/ex/ex_delete.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/contrib/nvi/ex/ex_delete.c b/contrib/nvi/ex/ex_delete.c new file mode 100644 index 0000000..58734bb --- /dev/null +++ b/contrib/nvi/ex/ex_delete.c @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * + * See the LICENSE file for redistribution information. + */ + +#include "config.h" + +#ifndef lint +static const char sccsid[] = "@(#)ex_delete.c 10.9 (Berkeley) 10/23/96"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/queue.h> + +#include <bitstring.h> +#include <limits.h> +#include <stdio.h> + +#include "../common/common.h" + +/* + * ex_delete: [line [,line]] d[elete] [buffer] [count] [flags] + * + * Delete lines from the file. + * + * PUBLIC: int ex_delete __P((SCR *, EXCMD *)); + */ +int +ex_delete(sp, cmdp) + SCR *sp; + EXCMD *cmdp; +{ + recno_t lno; + + NEEDFILE(sp, cmdp); + + /* + * !!! + * Historically, lines deleted in ex were not placed in the numeric + * buffers. We follow historic practice so that we don't overwrite + * vi buffers accidentally. + */ + if (cut(sp, + FL_ISSET(cmdp->iflags, E_C_BUFFER) ? &cmdp->buffer : NULL, + &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE)) + return (1); + + /* Delete the lines. */ + if (del(sp, &cmdp->addr1, &cmdp->addr2, 1)) + return (1); + + /* Set the cursor to the line after the last line deleted. */ + sp->lno = cmdp->addr1.lno; + + /* Or the last line in the file if deleted to the end of the file. */ + if (db_last(sp, &lno)) + return (1); + if (sp->lno > lno) + sp->lno = lno; + return (0); +} |