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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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#ifndef UTILITY_INCLUDED
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#define UTILITY_INCLUDED
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/*
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PROCEDURE DECLARATIONS
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These routines are concerned with error reporting, memory allocation
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and system calls.
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*/
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extern void error PROTO_W ( ( int, char *, ... ) ) ;
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extern pointer xalloc PROTO_S ( ( int ) ) ;
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extern pointer xrealloc PROTO_S ( ( pointer, int ) ) ;
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extern char *string_copy PROTO_S ( ( char * ) ) ;
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extern char *string_concat PROTO_S ( ( char *, char * ) ) ;
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extern char *string_printf PROTO_W ( ( char *, ... ) ) ;
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extern void create_dir PROTO_S ( ( char * ) ) ;
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extern void check_name PROTO_S ( ( char * ) ) ;
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extern time_t date_stamp PROTO_S ( ( char * ) ) ;
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/*
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INPUT BUFFER
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This buffer is used to store input in various contexts.
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*/
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extern char *buffer ;
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#define buffsize 5000
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/*
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ERROR VARIABLES
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These variables are concerned with error reporting.
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*/
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extern int exit_status ;
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extern int no_errors ;
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extern int warnings ;
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extern char *progname ;
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extern char *progvers ;
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extern time_t progdate ;
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extern char *filename ;
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extern int line_no ;
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/*
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ERROR TYPES
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These values give the severity levels for the error reporting
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routine, error.
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*/
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#define ERR_FATAL 0
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#define ERR_INTERNAL 1
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#define ERR_SERIOUS 2
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#define ERR_WARNING 3
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#define ERR_INFO 4
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/*
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UTILITY MACROS
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These macros give convenient shorthands for various constructs.
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*/
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#define alloc_size( T, N )\
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( ( int ) ( N ) * ( int ) sizeof ( T ) )
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#define alloc_nof( T, N )\
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( T * ) xalloc ( alloc_size ( T, N ) )
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#define realloc_nof( P, T, N )\
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( T * ) xrealloc ( ( pointer ) ( P ), alloc_size ( T, N ) )
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#define array_size( A )\
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( ( int ) sizeof ( A ) / ( int ) sizeof ( A [0] ) )
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/*
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GENERAL ALLOCATION ROUTINE
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This routine allocates a variable V of type T, allocating N at a time.
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*/
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#define alloc_variable( V, T, N )\
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{\
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static int no_free = 0 ;\
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static T *free_list = null ;\
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if ( no_free == 0 ) {\
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no_free = N ;\
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free_list = alloc_nof ( T, N ) ;\
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}\
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V = free_list + ( --no_free ) ;\
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}
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#endif
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