Subversion Repositories tendra.SVN

Rev

Rev 2 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 7u83 1 
/*
2 
    		 Crown Copyright (c) 1997
3 
 
4 
    This TenDRA(r) Computer Program is subject to Copyright
5 
    owned by the United Kingdom Secretary of State for Defence
6 
    acting through the Defence Evaluation and Research Agency
7 
    (DERA).  It is made available to Recipients with a
8 
    royalty-free licence for its use, reproduction, transfer
9 
    to other parties and amendment for any purpose not excluding
10 
    product development provided that any such use et cetera
11 
    shall be deemed to be acceptance of the following conditions:-
12 
 
13 
        (1) Its Recipients shall ensure that this Notice is
14 
        reproduced upon any copies or amended versions of it;
15 
 
16 
        (2) Any amended version of it shall be clearly marked to
17 
        show both the nature of and the organisation responsible
18 
        for the relevant amendment or amendments;
19 
 
20 
        (3) Its onward transfer from a recipient to another
21 
        party shall be deemed to be that party's acceptance of
22 
        these conditions;
23 
 
24 
        (4) DERA gives no warranty or assurance as to its
25 
        quality or suitability for any purpose and DERA accepts
26 
        no liability whatsoever in relation to any use to which
27 
        it may be put.
28 
*/
29 
 
30 
 
31 
#include "config.h"
32 
#include "types.h"
33 
#include "fetch.h"
34 
#include "read_types.h"
35 
#include "analyser.h"
36 
#include "utility.h"
37 
 
38 
 
39 
/*
40 
    LIST OF DIRECTORIES
41 
 
42 
    This is the list of all directories to be searched for included files.
43 
*/
44 
 
45 
static directory *search_path = null ;
46 
 
47 
 
48 
/*
49 
    INPUT FILE
50 
 
51 
    The current input file, together with its name.
52 
*/
53 
 
54 
FILE *input ;
55 
char *input_file = null ;
56 
 
57 
 
58 
/*
59 
    OPEN INPUT FILE
60 
 
61 
    This routine opens the file nm.  If search is true it will search
62 
    for it along search_path.
63 
*/
64 
 
65 
void open_input
66 
    PROTO_N ( ( nm, search ) )
67 
    PROTO_T ( char *nm X int search )
68 
{
69 
    input = fopen ( nm, ( text_input ? "r" : "rb" ) ) ;
70 
    if ( search && input == null ) {
71 
	directory *d = search_path ;
72 
	while ( input == null && d ) {
73 
	    char buff [1000] ;
74 
	    IGNORE sprintf ( buff, "%s/%s", d->dirname, nm ) ;
75 
	    input = fopen ( buff, ( text_input ? "r" : "rb" ) ) ;
76 
	    d = d->next ;
77 
	}
78 
    }
79 
    if ( input == null ) fatal_error ( "Can't open input file, %s", nm ) ;
80 
    input_file = nm ;
81 
    bits_in_buff = 0 ;
82 
    bytes_read = 0 ;
83 
    crt_line_no = 1 ;
84 
    line_no = 1 ;
85 
    looked_ahead = 0 ;
86 
    return ;
87 
}
88 
 
89 
 
90 
/*
91 
    ADD A DIRECTORY TO THE SEARCH PATH
92 
 
93 
    The directory nm is added to search_path.
94 
*/
95 
 
96 
void add_directory
97 
    PROTO_N ( ( nm ) )
98 
    PROTO_T ( char *nm )
99 
{
100 
    directory *d = alloc_nof ( directory, 1 ) ;
101 
    d->dirname = nm ;
102 
    d->next = null ;
103 
    if ( search_path == null ) {
104 
	search_path = d ;
105 
    } else {
106 
	directory *p = search_path ;
107 
	while ( p->next ) p = p->next ;
108 
	p->next = d ;
109 
    }
110 
    return ;
111 
}
112 
 
113 
 
114 
/*
115 
    OUTPUT FILE
116 
 
117 
    The current output file.
118 
*/
119 
 
120 
FILE *output /* = stdout */ ;
121 
 
122 
 
123 
/*
124 
    OPEN OUTPUT FILE
125 
 
126 
    The output file nm is opened.
127 
*/
128 
 
129 
void open_output
130 
    PROTO_N ( ( nm ) )
131 
    PROTO_T ( char *nm )
132 
{
133 
    static char *opened = null ;
134 
    if ( opened ) {
135 
	warning ( "Multiple output files given, using %s", opened ) ;
136 
	return ;
137 
    }
138 
    output = fopen ( nm, ( text_output ? "w" : "wb" ) ) ;
139 
    if ( output == null ) fatal_error ( "Can't open output file, %s", nm ) ;
140 
    opened = nm ;
141 
    return ;
142 
}