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 8.6 1993/11/20 10:05:40 bostic Exp $ (Berkeley) $Date: 1993/11/20 10:05:40 $";
  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 "pathnames.h"
  24
  25 /*
  26  * ex_mkexrc -- :mkexrc[!] [file]
  27  *      Create (or overwrite) a .exrc file with the current info.
  28  */
  29 int
  30 ex_mkexrc(sp, ep, cmdp)
  31         SCR *sp;
  32         EXF *ep;
  33         EXCMDARG *cmdp;
  34 {
  35         struct stat sb;
  36         FILE *fp;
  37         int fd, sverrno;
  38         char *fname;
  39
  40         switch (cmdp->argc) {
  41         case 0:
  42                 fname = _PATH_EXRC;
  43                 break;
  44         case 1:
  45                 fname = cmdp->argv[0];
  46                 set_alt_name(sp, fname);
  47                 break;
  48         default:
  49                 abort();
  50         }
  51
  52         if (!F_ISSET(cmdp, E_FORCE) && !stat(fname, &sb)) {
  53                 msgq(sp, M_ERR,
  54                     "%s exists, not written; use ! to override.", fname);
  55                 return (1);
  56         }
  57
  58         /* Create with max permissions of rw-r--r--. */
  59         if ((fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY,
  60             S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) < 0) {
  61                 msgq(sp, M_SYSERR, fname);
  62                 return (1);
  63         }
  64
  65         if ((fp = fdopen(fd, "w")) == NULL) {
  66                 sverrno = errno;
  67                 (void)close(fd);
  68                 errno = sverrno;
  69                 goto e2;
  70         }
  71
  72         if (abbr_save(sp, fp) || ferror(fp))
  73                 goto e1;
  74         if (map_save(sp, fp) || ferror(fp))
  75                 goto e1;
  76         if (opts_save(sp, fp) || ferror(fp))
  77                 goto e1;
  78 #ifndef NO_DIGRAPH
  79         digraph_save(sp, fd);
  80 #endif
  81         if (fclose(fp))
  82                 goto e2;
  83
  84         msgq(sp, M_INFO, "New .exrc file: %s. ", fname);
  85         return (0);
  86
  87 e1:     sverrno = errno;
  88         (void)fclose(fp);
  89         errno = sverrno;
  90 e2:     msgq(sp, M_ERR, "%s: incomplete: %s", fname, strerror(errno));
  91         return (1);
  92 }