Rev 5 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed
/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
#include "config.h"
#if FS_STDARG
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "types.h"
#include "read_types.h"
#include "analyser.h"
#include "fetch.h"
#include "file.h"
#include "table.h"
#include "utility.h"
#include "write.h"
extern char *progname ;
extern char *capname ;
extern int decode_status ;
extern int have_version ;
/*
ARE INPUT AND OUTPUT TEXT OR CODE?
The form of any error message depends on whether the input file
is text or code.
*/
boolean text_input = 1 ;
boolean text_output = 0 ;
/*
EXIT STATUS
The overall exit status of the program.
*/
int exit_status = EXIT_SUCCESS ;
/*
REPORT A FATAL ERROR
The error s is reported and the program exits.
*/
void fatal_error
PROTO_V ( ( char *s, ... ) ) /* VARARGS */
{
va_list args ;
#if FS_STDARG
va_start ( args, s ) ;
#else
char *s ;
va_start ( args ) ;
s = va_arg ( args, char * ) ;
#endif
if ( progname ) IGNORE fprintf ( stderr, "%s: ", progname ) ;
IGNORE fprintf ( stderr, "Error: " ) ;
IGNORE vfprintf ( stderr, s, args ) ;
IGNORE fprintf ( stderr, ".\n" ) ;
va_end ( args ) ;
exit ( EXIT_FAILURE ) ;
}
/*
IS AN INPUT ERROR FATAL?
Not all input errors cause an immediate exit. These should set
is_fatal to false before calling input_error.
*/
boolean is_fatal = 1 ;
/*
REPORT AN INPUT ERROR
The input error s is reported and the program exits.
*/
void input_error
PROTO_V ( ( char *s, ... ) ) /* VARARGS */
{
va_list args ;
#if FS_STDARG
va_start ( args, s ) ;
#else
char *s ;
va_start ( args ) ;
s = va_arg ( args, char * ) ;
#endif
if ( progname ) IGNORE fprintf ( stderr, "%s: ", progname ) ;
IGNORE fprintf ( stderr, "Error: " ) ;
IGNORE vfprintf ( stderr, s, args ) ;
if ( input_file ) {
IGNORE fprintf ( stderr, ", %s", input_file ) ;
if ( text_input ) {
IGNORE fprintf ( stderr, ", line %ld", line_no ) ;
} else {
long b = input_posn () ;
if ( capname ) {
IGNORE fprintf ( stderr, ", capsule %s", capname ) ;
}
switch ( decode_status ) {
case 0 : {
IGNORE fprintf ( stderr, " (at outermost level)" ) ;
break ;
}
case 1 : {
IGNORE fprintf ( stderr, " (in linking information)" ) ;
break ;
}
case 2 : {
IGNORE fprintf ( stderr, " (in unit body)" ) ;
break ;
}
}
IGNORE fprintf ( stderr, ", byte %ld, bit %ld", b / 8, b % 8 ) ;
if ( decode_status == 0 ) {
IGNORE fprintf ( stderr, " (Illegal TDF capsule?)" ) ;
}
if ( decode_status >= 1 && !have_version ) {
IGNORE fprintf ( stderr, " (TDF version error?)" ) ;
}
}
}
IGNORE fprintf ( stderr, ".\n" ) ;
va_end ( args ) ;
if ( is_fatal ) {
if ( text_output ) {
sort_all () ;
print_capsule () ;
IGNORE fputs ( "# TERMINATED ON INPUT ERROR\n", output ) ;
}
exit ( EXIT_FAILURE ) ;
}
is_fatal = 1 ;
exit_status = EXIT_FAILURE ;
return ;
}
/*
ISSUE A WARNING
The warning message s is printed.
*/
void warning
PROTO_V ( ( char *s, ... ) ) /* VARARGS */
{
va_list args ;
#if FS_STDARG
va_start ( args, s ) ;
#else
char *s ;
va_start ( args ) ;
s = va_arg ( args, char * ) ;
#endif
if ( progname ) IGNORE fprintf ( stderr, "%s: ", progname ) ;
IGNORE fprintf ( stderr, "Warning: " ) ;
IGNORE vfprintf ( stderr, s, args ) ;
IGNORE fprintf ( stderr, ".\n" ) ;
va_end ( args ) ;
return ;
}
/*
ALLOCATE A SECTION OF MEMORY
This routine allocates n bytes of memory.
*/
pointer xalloc
PROTO_N ( ( n ) )
PROTO_T ( int n )
{
pointer ptr ;
if ( n == 0 ) return ( null ) ;
ptr = ( pointer ) malloc ( ( size_t ) n ) ;
if ( ptr == null ) {
if ( !text_input && decode_status == 0 ) {
fatal_error ( "Memory allocation error (Illegal TDF capsule?)" ) ;
}
fatal_error ( "Memory allocation error" ) ;
}
return ( ptr ) ;
}
/*
REALLOCATE A SECTION OF MEMORY
This routine reallocates n bytes of memory for the pointer p.
*/
pointer xrealloc
PROTO_N ( ( p, n ) )
PROTO_T ( pointer p X int n )
{
pointer ptr ;
if ( n == 0 ) return ( null ) ;
if ( p == null ) return ( xalloc ( n ) ) ;
ptr = ( pointer ) realloc ( p, ( size_t ) n ) ;
if ( ptr == null ) fatal_error ( "Memory allocation error" ) ;
return ( ptr ) ;
}
/*
MAKE A COPY OF A STRING
This routine makes a permanent copy of the string s of length n.
*/
char *string_copy
PROTO_N ( ( s, n ) )
PROTO_T ( char *s X int n )
{
int m = ( n + 1 ) * ( int ) sizeof ( char ) ;
char *p = ( char * ) xalloc ( m ) ;
IGNORE strncpy ( p, s, ( size_t ) n ) ;
p [n] = 0 ;
return ( p ) ;
}
/*
MAKE A TEMPORARY COPY OF A STRING
This routine copies a string into a temporary buffer.
*/
char *temp_copy
PROTO_N ( ( s ) )
PROTO_T ( char *s )
{
static char *buff = null ;
static int bufflen = 0 ;
int n = ( int ) strlen ( s ) + 1 ;
if ( n >= bufflen ) {
bufflen = n + 100 ;
buff = ( char * ) xrealloc ( ( pointer ) buff, bufflen ) ;
}
IGNORE strcpy ( buff, s ) ;
return ( buff ) ;
}
/*
CONVERT AN UNSIGNED LONG TO OCTAL
The result is returned as a string of octal digits.
*/
char *ulong_to_octal
PROTO_N ( ( n ) )
PROTO_T ( unsigned long n )
{
int i = 99 ;
char buff [100] ;
if ( n == 0 ) return ( "0" ) ;
buff [i] = 0 ;
while ( n ) {
buff [ --i ] = ( char ) ( '0' + ( n & 7 ) ) ;
n >>= 3 ;
}
return ( string_copy ( buff + i, 99 - i ) ) ;
}
/*
CONVERT AN OCTAL STRING TO AN UNSIGNED LONG
Any overflow is ignored (but see below).
*/
unsigned long octal_to_ulong
PROTO_N ( ( num ) )
PROTO_T ( char *num )
{
unsigned long n = 0 ;
for ( ; *num ; num++ ) {
n = ( n << 3 ) + ( unsigned long ) ( *num - '0' ) ;
}
return ( n ) ;
}
/*
DOES THE GIVEN OCTAL STRING FIT INTO AN UNSIGNED LONG?
The number of binary digits needed to represent the octal number
is calculated and compared against the number of bits in an
unsigned long, minus sz (to allow for a sign bit).
*/
boolean fits_ulong
PROTO_N ( ( num, sz ) )
PROTO_T ( char *num X int sz )
{
int n = 3 * ( int ) strlen ( num ) ;
int m = BYTESIZE * ( int ) sizeof ( unsigned long ) - sz ;
switch ( *num ) {
case '0' : n -= 3 ; break ;
case '1' : n -= 2 ; break ;
case '2' : n -= 1 ; break ;
case '3' : n -= 1 ; break ;
}
if ( n <= m ) return ( 1 ) ;
return ( 0 ) ;
}