diff options
Diffstat (limited to 'usr.bin/vi/vi/v_switch.c')
-rw-r--r-- | usr.bin/vi/vi/v_switch.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/usr.bin/vi/vi/v_switch.c b/usr.bin/vi/vi/v_switch.c new file mode 100644 index 000000000000..abdd128f0936 --- /dev/null +++ b/usr.bin/vi/vi/v_switch.c @@ -0,0 +1,95 @@ +/*- + * 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_switch.c 8.7 (Berkeley) 3/8/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <queue.h> +#include <sys/time.h> + +#include <bitstring.h> +#include <limits.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <termios.h> + +#include <db.h> +#include <regex.h> + +#include "vi.h" +#include "vcmd.h" +#include "excmd.h" + +/* + * v_switch -- ^^ + * Switch to the previous file. + */ +int +v_switch(sp, ep, vp) + SCR *sp; + EXF *ep; + VICMDARG *vp; +{ + EXCMDARG cmd; + char *name; + + /* + * Try the alternate file name, then the previous file + * name. Use the real name, not the user's current name. + */ + if (sp->alt_name != NULL) + name = sp->alt_name; + else if (sp->p_frp != NULL) + name = sp->p_frp->name; + else { + msgq(sp, M_ERR, "No previous file to edit."); + return (1); + } + + /* If autowrite is set, write out the file. */ + if (F_ISSET(ep, F_MODIFIED)) + if (O_ISSET(sp, O_AUTOWRITE)) { + if (file_write(sp, ep, NULL, NULL, NULL, FS_ALL)) + return (1); + } else { + msgq(sp, M_ERR, + "Modified since last write; write or use :edit! to override."); + return (1); + } + + SETCMDARG(cmd, C_EDIT, 0, OOBLNO, OOBLNO, 0, name); + return (sp->s_ex_cmd(sp, ep, &cmd, &vp->m_final)); +} |