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 *getenv ();
  40
  41 char *xmalloc ();
  42 char *xrealloc ();
  43 void skip_to_lf ();
  44
  45 int
  46 main (argc, argv)
  47      int argc;
  48      char *argv[];
  49 {
  50   char *hd;
  51   char *md;
  52   char *mdd;
  53   char *mfile;
  54   char *cf;
  55   int cflen;
  56   FILE *mddf;
  57   FILE *mfilef;
  58   FILE *cff;
  59   char pre[10];
  60   char name[14];
  61   int c;
  62
  63   hd = (char *) getenv ("HOME");
  64
  65   md = (char *) xmalloc (strlen (hd) + 10);
  66   strcpy (md, hd);
  67   strcat (md, "/Messages");
  68
  69   mdd = (char *) xmalloc (strlen (md) + 11);
  70   strcpy (mdd, md);
  71   strcat (mdd, "/Directory");
  72
  73   cflen = 100;
  74   cf = (char *) xmalloc (cflen);
  75
  76   mddf = fopen (mdd, "r");
  77   if (argc > 1)
  78     mfilef = fopen (argv[1], "w");
  79   else
  80     {
  81       mfile = (char *) xmalloc (strlen (hd) + 7);
  82       strcpy (mfile, hd);
  83       strcat (mfile, "/OMAIL");
  84       mfilef = fopen (mfile, "w");
  85     }
  86   skip_to_lf (mddf);
  87   while (fscanf (mddf, "%4c%14[0123456789]", pre, name) != EOF)
  88     {
  89       if (cflen < strlen (md) + strlen (name) + 2)
  90         {
  91           cflen = strlen (md) + strlen (name) + 2;
  92           cf = (char *) xrealloc (cf, cflen);
  93         }
  94       strcpy (cf, md);
  95       strcat (cf,"/");
  96       strcat (cf, name);
  97       cff = fopen (cf, "r");
  98       while ((c = getc(cff)) != EOF)
  99         putc (c, mfilef);
 100       putc ('\n', mfilef);
 101       skip_to_lf (mddf);
 102      fclose (cff);
 103     }
 104   fclose (mddf);
 105   fclose (mfilef);
 106   return 0;
 107 }
 108
 109 void
 110 skip_to_lf (stream)
 111      FILE *stream;
 112 {
 113   register int c;
 114   while ((c = getc(stream)) != '\n')
 115     ;
 116 }
 117
 118
 119 void
 120 error (s1, s2)
 121      char *s1, *s2;
 122 {
 123   fprintf (stderr, "cvtmail: ");
 124   fprintf (stderr, s1, s2);
 125   fprintf (stderr, "\n");
 126 }
 127
 128 /* Print error message and exit.  */
 129
 130 void
 131 fatal (s1, s2)
 132      char *s1, *s2;
 133 {
 134   error (s1, s2);
 135   exit (1);
 136 }
 137
 138 char *
 139 xmalloc (size)
 140      unsigned size;
 141 {
 142   char *result = malloc (size);
 143   if (!result)
 144     fatal ("virtual memory exhausted", 0);
 145   return result;
 146 }
 147
 148 char *
 149 xrealloc (ptr, size)
 150      char *ptr;
 151      unsigned size;
 152 {
 153   char *result = realloc (ptr, size);
 154   if (!result)
 155     fatal ("virtual memory exhausted");
 156   return result;
 157 }