/************************************************************************* ** ^FILE: useful.h - various definitions of general interest ** ** ^DESCRIPTION: ** This file #defines several macros that are either of very general ** use, or that assist in writing portable programs between various ** systems and/or compilers. ** ** ^HISTORY: ** --/--/-- Brad Appleton ** - Added structured block comments ** - Added varargs/stdarg macros ** - Added BSET, BCLEAR, BTEST macros for handling bitmasks ** - #defined EXTERN to be extern "C" for C++ ** - Added #defines for STDIN, STDOUT, and STDERR file descriptors ** ** --/--/-- Peter da Silva ** ** --/--/-- Eric P. Allman Created ***^^**********************************************************************/ /* $Header: useful.h,v 2.0 89/12/24 00:56:33 eric Exp $ */ #ifndef _USEFUL_H_ #define _USEFUL_H_ #ifndef unix # if (defined(_unix) || defined(_unix_) || defined(__unix) || defined(__unix__) || defined(UNIX) || defined(_UNIX) || defined(_UNIX_) || defined(__UNIX) || defined(__UNIX__) || defined(Unix) || defined(_Unix) || defined(_Unix_) || defined(__Unix) || defined(__Unix__) || defined(sun)) # define unix # endif /* _UNIX */ #endif /* unix */ #ifndef BSD # if (defined(ucb_universe) || defined(UCB) || defined(_BSD) || defined(_BSD_) || defined(__BSD) || defined(__BSD__) || defined(BSD_UNIX) || defined(_BSD_UNIX) || defined(_BSD_UNIX_) || defined(__BSD_UNIX) || defined(__BSD_UNIX__) || defined(sun)) # define BSD # endif /* _BSD */ #endif /* BSD */ #ifndef AmigaDOS # if (defined(MANX) || defined(AZTEC)) # define AmigaDOS # endif #endif /* AmigaDOS */ #ifndef vms # if (defined(_vms) || defined(_vms_) || defined(__vms) || defined(__vms__) || defined(VMS) || defined(_VMS) || defined(_VMS_) || defined(__VMS) || defined(__VMS__)) # define vms # endif /* _VMS */ #endif /* vms */ #ifndef MSDOS # if (defined(_MSDOS) || defined(_MSDOS_) || defined(__MSDOS) || defined(__MSDOS__) || defined(MS_DOS) || defined(_MS_DOS) || defined(_MS_DOS_) || defined(__MS_DOS) || defined(__MS_DOS__)) # define MSDOS # endif /* _MSDOS */ #endif /* MSDOS */ #ifndef OS2 # if (defined(_OS2) || defined(_OS2_) || defined(__OS2) || defined(__OS2__)) # define OS2 # endif /* _OS2 */ #endif /* OS2 */ #ifndef FILE # include #endif #ifndef STDIN # define STDIN 0 # define STDOUT 1 # define STDERR 2 #endif /* macros to portably convert character case */ #define TOUPPER(c) ( islower(c) ) ? toupper(c) : (c) #define TOLOWER(c) ( isupper(c) ) ? tolower(c) : (c) /* give a stab at the multiple-language dilemma */ #ifdef __STDC__ # define ARGS(x) x # define NOARGS ( void ) # define __ANSI_C__ #else # if defined(c_plusplus) || defined(__cplusplus) # define ARGS(x) x # define NOARGS () # define __ANSI_C__ # else # define ARGS(x) () # define NOARGS () # endif #endif /* give a stab at the variable arguments dilemma --BDA */ #ifdef __STDC__ # ifndef va_arg # include # endif # define VA_START(ap,last) va_start(ap, last) # define VA_ARG(ap,type) va_arg(ap, type) # define VA_END(ap) va_end(ap) #else # ifndef va_arg # include # endif # define VA_START(ap,last) va_start(ap) # define VA_ARG(ap,type) va_arg(ap, type) # define VA_END(ap) va_end(ap) #endif #if ( !defined(__ANSI_C__) && !defined(_SIZE_T_DEFINED) ) typedef unsigned int size_t; # define _SIZE_T_DEFINED 1 #endif #ifndef VOID # if ( defined(__ANSI_C__) || !defined(NOVOID) ) # define VOID void # else # define VOID int # endif #endif #ifndef TRUE # define TRUE 1 # define FALSE 0 #endif #ifndef STATIC # ifndef NODEBUG # define STATIC # else # define STATIC static # endif #endif #ifndef EXTERN # if defined(c_plusplus) || defined(__cplusplus) # define EXTERN extern "C" # else # define EXTERN extern # endif #endif #ifndef CONST # ifdef __ANSI_C__ # define CONST const # else # define CONST # endif #endif #ifndef NULL # define NULL 0 #endif #ifndef CHARNULL # define CHARNULL ((char *) NULL) #endif #ifndef FILENULL # define FILENULL ((FILE *) NULL) #endif #ifdef __ANSI_C__ typedef void *ARBPTR; #else typedef char *ARBPTR; #endif #define __ (ARBPTR) #define ARBNULL (__ NULL) #ifndef BOOL typedef char BOOL; #endif #ifdef lint # define VERSIONID(v) #else # define VERSIONID(v) static char _Version[] = v #endif /* keep BITSET for compatibilty ** but use BSET, BCLEAR, etc... instead --BDA */ #define BITSET(bstr,mask) ( ((bstr) & (mask)) != 0 ) #define BTEST(bstr,mask) ( ((bstr) & (mask)) != 0 ) #define BSET(bstr,mask) (bstr) |= (mask) #define BCLEAR(bstr,mask) (bstr) &= ~(mask) #ifndef STRING_H # define STRING_H EXTERN char *strcat ARGS(( char *, const char * )); EXTERN char *strncat ARGS(( char *, const char *, int )); EXTERN int strcmp ARGS(( const char *, const char * )); EXTERN int strncmp ARGS(( const char *, const char *, int )); EXTERN char *strcpy ARGS(( char *, const char * )); EXTERN char *strncpy ARGS(( char *, const char *, int )); EXTERN int strlen ARGS(( const char * )); # ifndef BSD # define index(s,c) strchr(s,c) # define rindex(s,c) strrchr(s,c) EXTERN char *strchr ARGS(( const char *, int )); EXTERN char *strrchr ARGS(( const char *, int )); EXTERN char *strpbrk ARGS(( const char *, const char * )); EXTERN int strspn ARGS(( const char *, const char * )); EXTERN int strcspn ARGS(( const char *, const char * )); EXTERN char *strtok ARGS(( char *, char * )); EXTERN char *strdup ARGS(( const char * )); # else # define strchr(s,c) index(s,c) # define strrchr(s,c) rindex(s,c) EXTERN char *index ARGS(( const char *, int )); EXTERN char *rindex ARGS(( const char *, int )); # endif /* !BSD */ # ifdef BSD # define bcmp(b1,b2,n) memcmp(b1,b2,n) # define bcopy(b1,b2,n) memcpy(b2,b1,n) # define bzero(b,n) memset(b,'\0',n) # ifndef MEMORY_H # define MEMORY_H EXTERN ARBPTR memccpy ARGS(( ARBPTR, const ARBPTR, int, int )); EXTERN ARBPTR memchr ARGS(( ARBPTR, int, int )); EXTERN int memcmp ARGS(( const ARBPTR, const ARBPTR, int )); EXTERN ARBPTR memcpy ARGS(( ARBPTR, const ARBPTR, int )); EXTERN ARBPTR memmove ARGS(( ARBPTR, const ARBPTR, int )); EXTERN ARBPTR memset ARGS(( ARBPTR, int, int )); # endif /* MEMORY_H */ # else # define memcmp(b1,b2,n) bcmp(b1,b2,n) # define memcpy(b1,b2,n) bcopy(b2,b1,n) # ifndef BSTRING_H # define BSTRING_H EXTERN VOID bcopy ARGS(( const ARBPTR, ARBPTR, int )); EXTERN int bcmp ARGS(( const ARBPTR, const ARBPTR, int )); EXTERN VOID bzero ARGS(( ARBPTR, int )); EXTERN int ffs ARGS(( int )); # endif /* BSTRING_H */ # endif /* !BSD */ #endif /* STRING_H */ EXTERN ARBPTR malloc ARGS(( size_t )); EXTERN ARBPTR ckalloc ARGS(( size_t )); EXTERN ARBPTR realloc ARGS(( ARBPTR, size_t )); EXTERN ARBPTR free ARGS(( ARBPTR )); EXTERN VOID exit ARGS(( int )); #define MAXINPUTLINE 200 /* maximum string input line */ #define MAXWORDLEN 100 /* maximum word (token) length */ #endif /* _USEFUL_H_ */