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/*
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 "list.h"
#include "flags.h"
#include "main.h"
#include "suffix.h"
#include "utility.h"
/*
ERROR VARIABLES
The value exit_status gives the overall status of the program. It
can be EXIT_SUCCESS or EXIT_FAILURE. The variable progname gives
the name of the program, which is used in error reports.
*/
int exit_status = EXIT_SUCCESS ;
char *progname = PROGNAME_TCC ;
/*
PRINT AN ERROR MESSAGE
This routine prints an error message s (a printf-style string,
which may be followed by any number of arguments) of severity e
(see utility.h).
*/
void error
PROTO_V ( ( int e, char *s, ... ) ) /* VARARGS */
{
va_list args ;
char *errtype = null ;
#if FS_STDARG
va_start ( args, s ) ;
#else
int e ;
char *s ;
va_start ( args ) ;
e = va_arg ( args, int ) ;
s = va_arg ( args, char * ) ;
#endif
switch ( e ) {
case FATAL : {
exit_status = EXIT_FAILURE ;
errtype = "Fatal" ;
break ;
}
case INTERNAL : {
exit_status = EXIT_FAILURE ;
errtype = "Internal" ;
break ;
}
case SERIOUS : {
exit_status = EXIT_FAILURE ;
errtype = "Error" ;
break ;
}
case OPTION : {
exit_status = EXIT_FAILURE ;
errtype = "Option interpreter" ;
break ;
}
case WARNING : {
if ( !warnings ) {
va_end ( args ) ;
return ;
}
errtype = "Warning" ;
break ;
}
case INFO : {
errtype = "Information" ;
break ;
}
}
if ( checker ) progname = PROGNAME_TCHK ;
IGNORE fprintf ( stderr, "%s: ", progname ) ;
if ( errtype ) IGNORE fprintf ( stderr, "%s: ", errtype ) ;
IGNORE vfprintf ( stderr, s, args ) ;
IGNORE fprintf ( stderr, ".\n" ) ;
va_end ( args ) ;
if ( e == FATAL ) main_end () ;
return ;
}
/*
PRINT A COMMENT
This routine prints the comment s (a printf-style string, which
may be followed by any number of arguments) to the standard output.
*/
void comment
PROTO_V ( ( int e, char *s, ... ) ) /* VARARGS */
{
FILE *f ;
va_list args ;
#if FS_STDARG
va_start ( args, s ) ;
#else
int e ;
char *s ;
va_start ( args ) ;
e = va_arg ( args, int ) ;
s = va_arg ( args, char * ) ;
#endif
f = ( e ? stdout : stderr ) ;
IGNORE fflush ( f ) ;
IGNORE vfprintf ( f, s, args ) ;
IGNORE fflush ( f ) ;
va_end ( args ) ;
return ;
}
/*
ALLOCATE A BLOCK OF MEMORY
This routine allocates a block of memory of size sz and returns
the result.
*/
pointer xalloc
PROTO_N ( ( sz ) )
PROTO_T ( int sz )
{
pointer p = ( pointer ) malloc ( ( size_t ) sz ) ;
if ( p == null ) error ( FATAL, "Memory allocation error" ) ;
return ( p ) ;
}
/*
REALLOCATE A BLOCK OF MEMORY
This routine reallocates the block of memory p to have size sz.
xrealloc ( null, sz ) is equivalent to xalloc ( sz ).
*/
pointer xrealloc
PROTO_N ( ( p, sz ) )
PROTO_T ( pointer p X int sz )
{
pointer q ;
if ( p == null ) return ( xalloc ( sz ) ) ;
q = ( pointer ) realloc ( p, ( size_t ) sz ) ;
if ( q == null ) error ( FATAL, "Memory reallocation error" ) ;
return ( q ) ;
}
/*
ALLOCATE SPACE FOR A STRING
This routine allocates n characters of memory for use in the string
memory allocation routines.
*/
static char *string_alloc
PROTO_N ( ( n ) )
PROTO_T ( int n )
{
char *r ;
if ( n >= 1000 ) {
/* Long strings are allocated space by alloc_nof */
r = alloc_nof ( char, n ) ;
} else {
/* Short strings are allocated space from a buffer */
static int no_free = 0 ;
static char *free_chars = null ;
if ( n >= no_free ) {
no_free = 4000 ;
free_chars = alloc_nof ( char, no_free ) ;
}
r = free_chars ;
no_free -= n ;
free_chars += n ;
}
return ( r ) ;
}
/*
COPY A STRING
This routine allocates space for a copy of the string s and copies
the string into this space. This copy is returned.
*/
char *string_copy
PROTO_N ( ( s ) )
PROTO_T ( char *s )
{
int n = ( int ) strlen ( s ) ;
char *r = string_alloc ( n + 1 ) ;
IGNORE strcpy ( r, s ) ;
return ( r ) ;
}
/*
COPY TWO STRINGS
This routine allocates space for a copy of the string s followed by
a copy of the string t and concatenates the strings into this space.
This copy is returned.
*/
char *string_concat
PROTO_N ( ( s, t ) )
PROTO_T ( char *s X char *t )
{
int n = ( int ) strlen ( s ) ;
int m = ( int ) strlen ( t ) ;
char *r = string_alloc ( n + m + 1 ) ;
IGNORE strcpy ( r, s ) ;
IGNORE strcpy ( r + n, t ) ;
return ( r ) ;
}
/*
TEMPORARY WORK SPACE
This variable gives a temporary work space of size buffer_size
(see utility.h) which is used as a scratch work area.
*/
char *buffer ;