wmail/src/common.c

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // common.c
   3 // common defines and typedefs, part of wmail
   4 //
   5 // Copyright 2000-2002, Sven Geisenhainer <sveng@informatik.uni-jena.de>.
   6 // Copyright 2016-2017, Doug Torrance <dtorrance@piedmont.edu>.
   7 // Copyright 2019, Jeremy Sowden <jeremy@azazel.net>.
   8 //
   9 // Redistribution and use in source and binary forms, with or without
  10 // modification, are permitted provided that the following conditions
  11 // are met:
  12 // 1. Redistributions of source code must retain the above copyright
  13 //    notice, this list of conditions, and the following disclaimer.
  14 // 2. Redistributions in binary form must reproduce the above copyright
  15 //    notice, this list of conditions, and the following disclaimer in the
  16 //    documentation and/or other materials provided with the distribution.
  17 // 3. The name of the author may not be used to endorse or promote products
  18 //    derived from this software without specific prior written permission.
  19 //
  20 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23 // IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25 // NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29 // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31
  32 #ifdef HAVE_CONFIG_H
  33 #ifndef CONFIG_H_INCLUDED
  34 #include "../config.h"
  35 #define CONFIG_H_INCLUDED
  36 #endif
  37 #endif
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <stdarg.h>
  42 #include <string.h>
  43
  44 #include "common.h"
  45
  46 #ifdef DEBUG
  47 void TRACE( const char *fmt, ... )
  48 {
  49     va_list args;
  50     va_start( args, fmt );
  51     vfprintf( stderr, fmt, args );
  52     fflush( stderr );
  53     va_end( args );
  54 }
  55 #endif
  56
  57 void ABORT( const char *fmt, ... )
  58 {
  59     va_list args;
  60     va_start( args, fmt );
  61     fprintf( stderr, "wmail error: " );
  62     vfprintf( stderr, fmt, args );
  63     fflush( stderr );
  64     va_end( args );
  65
  66     exit( 1 );
  67 }
  68
  69 void WARNING( const char *fmt, ... )
  70 {
  71     va_list args;
  72     va_start( args, fmt );
  73     fprintf( stderr, "wmail warning: " );
  74     vfprintf( stderr, fmt, args );
  75     fflush( stderr );
  76     va_end( args );
  77 }
  78
  79 char *MakePathName( const char *dir, const char *file )
  80 {
  81     size_t dir_len  = strlen( dir );
  82     size_t file_len = strlen( file );
  83
  84     size_t len;
  85     const char *fmt;
  86
  87     char *fullName;
  88
  89     if( dir[dir_len - 1] != '/' )
  90     {
  91         len = dir_len + 1 + file_len + 1;
  92         fmt = "%s/%s";
  93     }
  94     else
  95     {
  96         len = dir_len + file_len + 1;
  97         fmt = "%s%s";
  98     }
  99
 100     fullName = malloc( len );
 101     if( fullName != NULL )
 102         snprintf( fullName, len, fmt, dir, file );
 103     return fullName;
 104 }