code.delx.au - gnu-emacs/blob - lib-src/cvtmail.c

   1 /* Copyright (C) 1985, 1994 Free Software Foundation
   2 This file is part of GNU Emacs.
   3
   4 GNU Emacs is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation; either version 2, or (at your option)
   7 any later version.
   8
   9 GNU Emacs is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with GNU Emacs; see the file COPYING.  If not, write to
  16 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 /* cvtmail:
  19  * Program to convert oldstyle goslings emacs mail directories into
  20  * gnu-rmail format.  Program expects a directory called Messages to
  21  * exist in your home directory, containing individual mail messages in
  22  * separate files in the standard gosling emacs mail reader format.
  23  *
  24  * Program takes one argument: an output file.  THis file will contain
  25  * all the messages in Messages directory, in berkeley mail format.
  26  * If no output file is mentioned, messages are put in ~/OMAIL.
  27  *
  28  * In order to get rmail to read the messages, the resulting file must
  29  * be mv'ed to ~/mbox, and then have rmail invoked on them.
  30  *
  31  * Author: Larry Kolodney, 1985
  32  */
  33
  34
  35 #include <stdio.h>
  36
  37 char *malloc ();
  38 char *realloc ();
  39 char *xmalloc ();
  40 char *xrealloc ();
  41 char *getenv ();
  42
  43 main (argc, argv)
  44      int argc;
  45      char *argv[];
  46 {
  47   char *hd;
  48   char *md;
  49   char *mdd;
  50   char *mfile;
  51   char *cf;
  52   int cflen;
  53   FILE *mddf;
  54   FILE *mfilef;
  55   FILE *cff;
  56   char pre[10], post[100];
  57   char name[14];
  58   int c;
  59
  60   hd = (char *) getenv ("HOME");
  61
  62   md = (char *) xmalloc (strlen (hd) + 10);
  63   strcpy (md, hd);
  64   strcat (md, "/Messages");
  65
  66   mdd = (char *) xmalloc (strlen (md) + 11);
  67   strcpy (mdd, md);
  68   strcat (mdd, "/Directory");
  69
  70   cflen = 100;
  71   cf = (char *) xmalloc (cflen);
  72
  73   mddf = fopen (mdd, "r");
  74   if (argc > 1)
  75     mfilef = fopen (argv[1], "w");
  76   else
  77     {
  78       mfile = (char *) xmalloc (strlen (hd) + 7);
  79       strcpy (mfile, hd);
  80       strcat (mfile, "/OMAIL");
  81       mfilef = fopen (mfile, "w");
  82     }
  83   skip_to_lf (mddf);
  84   while (fscanf (mddf, "%4c%14[0123456789]", pre, name) != EOF)
  85     {
  86       if (cflen < strlen (md) + strlen (name) + 2)
  87         {
  88           cflen = strlen (md) + strlen (name) + 2;
  89           cf = (char *) xrealloc (cf, cflen);
  90         }
  91       strcpy (cf, md);
  92       strcat (cf,"/");
  93       strcat (cf, name);
  94       cff = fopen (cf, "r");
  95       while ((c = getc(cff)) != EOF)
  96         putc (c, mfilef);
  97       putc ('\n', mfilef);
  98       skip_to_lf (mddf);
  99      fclose (cff);
 100     }
 101   fclose (mddf);
 102   fclose (mfilef);
 103   return 0;
 104 }
 105
 106 skip_to_lf (stream)
 107      FILE *stream;
 108 {
 109   register int c;
 110   while ((c = getc(stream)) != '\n')
 111     ;
 112 }
 113
 114 char *
 115 xmalloc (size)
 116      unsigned size;
 117 {
 118   char *result = malloc (size);
 119   if (!result)
 120     fatal ("virtual memory exhausted", 0);
 121   return result;
 122 }
 123
 124 char *
 125 xrealloc (ptr, size)
 126      char *ptr;
 127      unsigned size;
 128 {
 129   char *result = realloc (ptr, size);
 130   if (!result)
 131     fatal ("virtual memory exhausted");
 132   return result;
 133 }
 134
 135 /* Print error message and exit.  */
 136
 137 fatal (s1, s2)
 138      char *s1, *s2;
 139 {
 140   error (s1, s2);
 141   exit (1);
 142 }
 143
 144 error (s1, s2)
 145      char *s1, *s2;
 146 {
 147   fprintf (stderr, "cvtmail: ");
 148   fprintf (stderr, s1, s2);
 149   fprintf (stderr, "\n");
 150 }