src/src/mytypes.h

   1 /* $Cambridge: exim/src/src/mytypes.h,v 1.2 2005/01/04 10:00:42 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2005 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10
  11 /* This header file contains type definitions and macros that I use as
  12 "standard" in the code of Exim and its utilities. Make it idempotent because
  13 local_scan.h includes it and exim.h includes them both (to get this earlier). */
  14
  15 #ifndef MYTYPES_H
  16 #define MYTYPES_H
  17
  18
  19 #define FALSE         0
  20 #define TRUE          1
  21 #define TRUE_UNSET    2
  22
  23
  24 /* If gcc is being used to compile Exim, we can use its facility for checking
  25 the arguments of printf-like functions. This is done by a macro. */
  26
  27 #ifdef __GNUC__
  28 #define PRINTF_FUNCTION  __attribute__((format(printf,1,2)))
  29 #else
  30 #define PRINTF_FUNCTION
  31 #endif
  32
  33
  34 /* Some operating systems (naughtily, imo) include a definition for "uchar" in
  35 the standard header files, so we use "uschar". Solaris has u_char in
  36 sys/types.h. This is just a typing convenience, of course. */
  37
  38 typedef int BOOL;
  39 typedef unsigned char uschar;
  40
  41
  42 /* These macros save typing for the casting that is needed to cope with the
  43 mess that is "char" in ISO/ANSI C. Having now been bitten enough times by
  44 systems where "char" is actually signed, I've converted Exim to use entirely
  45 unsigned chars, except in a few special places such as arguments that are
  46 almost always literal strings. */
  47
  48 #define CS   (char *)
  49 #define CCS  (const char *)
  50 #define CSS  (char **)
  51 #define US   (unsigned char *)
  52 #define CUS  (const unsigned char *)
  53 #define USS  (unsigned char **)
  54
  55 /* The C library string functions expect "char *" arguments. Use macros to
  56 avoid having to write a cast each time. We do this for string and file
  57 functions that are called quite often; for other calls to external libraries
  58 (which are on the whole special-purpose) we just use individual casts. */
  59
  60 #define Uatoi(s)           atoi(CCS(s))
  61 #define Uatol(s)           atol(CCS(s))
  62 #define Uchdir(s)          chdir(CCS(s))
  63 #define Uchmod(s,n)        chmod(CCS(s),n)
  64 #define Uchown(s,n,m)      chown(CCS(s),n,m)
  65 #define Ufgets(b,n,f)      fgets(CS(b),n,f)
  66 #define Ufopen(s,t)        fopen(CCS(s),CCS(t))
  67 #define Ulink(s,t)         link(CCS(s),CCS(t))
  68 #define Ulstat(s,t)        lstat(CCS(s),t)
  69
  70 #ifdef O_BINARY                                        /* This is for Cygwin,  */
  71 #define Uopen(s,n,m)       open(CCS(s),(n)|O_BINARY,m) /* where all files must */
  72 #else                                                  /* be opened as binary  */
  73 #define Uopen(s,n,m)       open(CCS(s),n,m)            /* to avoid problems    */
  74 #endif                                                 /* with CRLF endings.   */
  75 #define Uread(f,b,l)       read(f,CS(b),l)
  76 #define Urename(s,t)       rename(CCS(s),CCS(t))
  77 #define Ustat(s,t)         stat(CCS(s),t)
  78 #define Ustrcat(s,t)       strcat(CS(s),CCS(t))
  79 #define Ustrchr(s,n)       US strchr(CCS(s),n)
  80 #define CUstrchr(s,n)      CUS strchr(CCS(s),n)
  81 #define CUstrerror(n)      CUS strerror(n)
  82 #define Ustrcmp(s,t)       strcmp(CCS(s),CCS(t))
  83 #define Ustrcpy(s,t)       strcpy(CS(s),CCS(t))
  84 #define Ustrcspn(s,t)      strcspn(CCS(s),CCS(t))
  85 #define Ustrftime(s,m,f,t) strftime(CS(s),m,f,t)
  86 #define Ustrlen(s)         (int)strlen(CCS(s))
  87 #define Ustrncat(s,t,n)    strncat(CS(s),CCS(t),n)
  88 #define Ustrncmp(s,t,n)    strncmp(CCS(s),CCS(t),n)
  89 #define Ustrncpy(s,t,n)    strncpy(CS(s),CCS(t),n)
  90 #define Ustrpbrk(s,t)      strpbrk(CCS(s),CCS(t))
  91 #define Ustrrchr(s,n)      US strrchr(CCS(s),n)
  92 #define CUstrrchr(s,n)     CUS strrchr(CCS(s),n)
  93 #define Ustrspn(s,t)       strspn(CCS(s),CCS(t))
  94 #define Ustrstr(s,t)       US strstr(CCS(s),CCS(t))
  95 #define CUstrstr(s,t)      CUS strstr(CCS(s),CCS(t))
  96 #define Ustrtod(s,t)       strtod(CCS(s),CSS(t))
  97 #define Ustrtol(s,t,b)     strtol(CCS(s),CSS(t),b)
  98 #define Ustrtoul(s,t,b)    strtoul(CCS(s),CSS(t),b)
  99 #define Uunlink(s)         unlink(CCS(s))
 100 #endif
 101
 102 /* End of mytypes.h */