ex/ex_mkexrc.c

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * %sccs.include.redist.c%
   6  */
   7
   8 #ifndef lint
   9 static char sccsid[] = "$Id: ex_mkexrc.c,v 8.8 1993/12/02 10:49:53 bostic Exp $ (Berkeley) $Date: 1993/12/02 10:49:53 $";
  10 #endif /* not lint */
  11
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14
  15 #include <errno.h>
  16 #include <fcntl.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <unistd.h>
  20
  21 #include "vi.h"
  22 #include "excmd.h"
  23 #include "seq.h"
  24 #include "pathnames.h"
  25
  26 /*
  27  * ex_mkexrc -- :mkexrc[!] [file]
  28  *
  29  * Create (or overwrite) a .exrc file with the current info.
  30  */
  31 int
  32 ex_mkexrc(sp, ep, cmdp)
  33         SCR *sp;
  34         EXF *ep;
  35         EXCMDARG *cmdp;
  36 {
  37         struct stat sb;
  38         FILE *fp;
  39         int fd, sverrno;
  40         char *fname;
  41
  42         switch (cmdp->argc) {
  43         case 0:
  44                 fname = _PATH_EXRC;
  45                 break;
  46         case 1:
  47                 fname = cmdp->argv[0]->bp;
  48                 set_alt_name(sp, fname);
  49                 break;
  50         default:
  51                 abort();
  52         }
  53
  54         if (!F_ISSET(cmdp, E_FORCE) && !stat(fname, &sb)) {
  55                 msgq(sp, M_ERR,
  56                     "%s exists, not written; use ! to override.", fname);
  57                 return (1);
  58         }
  59
  60         /* Create with max permissions of rw-r--r--. */
  61         if ((fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY,
  62             S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) < 0) {
  63                 msgq(sp, M_SYSERR, fname);
  64                 return (1);
  65         }
  66
  67         if ((fp = fdopen(fd, "w")) == NULL) {
  68                 sverrno = errno;
  69                 (void)close(fd);
  70                 errno = sverrno;
  71                 goto e2;
  72         }
  73
  74         if (abbr_save(sp, fp) || ferror(fp))
  75                 goto e1;
  76         if (map_save(sp, fp) || ferror(fp))
  77                 goto e1;
  78         if (opts_save(sp, fp) || ferror(fp))
  79                 goto e1;
  80 #ifndef NO_DIGRAPH
  81         digraph_save(sp, fd);
  82 #endif
  83         if (fclose(fp))
  84                 goto e2;
  85
  86         msgq(sp, M_INFO, "New .exrc file: %s. ", fname);
  87         return (0);
  88
  89 e1:     sverrno = errno;
  90         (void)fclose(fp);
  91         errno = sverrno;
  92 e2:     msgq(sp, M_ERR, "%s: incomplete: %s", fname, strerror(errno));
  93         return (1);
  94 }