dist/nvi/ex/ex_file.c

   1 /*      $NetBSD: ex_file.c,v 1.1.1.2 2008/05/18 14:31:14 aymeric Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1992, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   7  *      Keith Bostic.  All rights reserved.
   8  *
   9  * See the LICENSE file for redistribution information.
  10  */
  11
  12 #include "config.h"
  13
  14 #ifndef lint
  15 static const char sccsid[] = "Id: ex_file.c,v 10.14 2001/06/25 15:19:16 skimo Exp (Berkeley) Date: 2001/06/25 15:19:16";
  16 #endif /* not lint */
  17
  18 #include <sys/types.h>
  19 #include <sys/queue.h>
  20
  21 #include <bitstring.h>
  22 #include <errno.h>
  23 #include <limits.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "../common/common.h"
  29
  30 /*
  31  * ex_file -- :f[ile] [name]
  32  *      Change the file's name and display the status line.
  33  *
  34  * PUBLIC: int ex_file __P((SCR *, EXCMD *));
  35  */
  36 int
  37 ex_file(SCR *sp, EXCMD *cmdp)
  38 {
  39         char *p;
  40         FREF *frp;
  41         const char *np;
  42         size_t nlen;
  43
  44         NEEDFILE(sp, cmdp);
  45
  46         switch (cmdp->argc) {
  47         case 0:
  48                 break;
  49         case 1:
  50                 frp = sp->frp;
  51
  52                 /* Make sure can allocate enough space. */
  53                 INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1,
  54                             np, nlen);
  55                 if ((p = v_strdup(sp, np, nlen - 1)) == NULL)
  56                         return (1);
  57
  58                 /* If already have a file name, it becomes the alternate. */
  59                 if (!F_ISSET(frp, FR_TMPFILE))
  60                         set_alt_name(sp, frp->name);
  61
  62                 /* Free the previous name. */
  63                 free(frp->name);
  64                 frp->name = p;
  65
  66                 /*
  67                  * The file has a real name, it's no longer a temporary,
  68                  * clear the temporary file flags.
  69                  */
  70                 F_CLR(frp, FR_TMPEXIT | FR_TMPFILE);
  71
  72                 /* Have to force a write if the file exists, next time. */
  73                 F_SET(frp, FR_NAMECHANGE);
  74
  75                 /* Notify the screen. */
  76                 (void)sp->gp->scr_rename(sp, sp->frp->name, 1);
  77                 break;
  78         default:
  79                 abort();
  80         }
  81         msgq_status(sp, sp->lno, MSTAT_SHOWLAST);
  82         return (0);
  83 }