1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* cook - file construction tool
* Copyright (C) 1999, 2006, 2007 Peter Miller;
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* MANIFEST: functions for reading input from files
*/
#include <common/error_intl.h>
#include <common/input/file.h>
#include <common/input/private.h>
#include <common/input/stdin.h>
#include <common/str.h>
#include <common/sub.h>
typedef struct input_file_ty input_file_ty;
struct input_file_ty
{
input_ty inherited;
FILE *fp;
string_ty *fn;
};
static void
destruct(input_ty *p)
{
input_file_ty *this;
this = (input_file_ty *)p;
fclose_and_check(this->fp, this->fn->str_text);
str_free(this->fn);
this->fp = 0;
this->fn = 0;
}
static long
iread(input_ty *p, void *data, long len)
{
input_file_ty *this;
long result;
if (len < 0)
return 0;
this = (input_file_ty *)p;
result = fread(data, (size_t) 1, (size_t) len, this->fp);
if (result <= 0 && ferror(this->fp))
fatal_intl_read(this->fn->str_text);
return result;
}
static int
get(input_ty *p)
{
input_file_ty *this;
int c;
this = (input_file_ty *)p;
c = getc(this->fp);
if (c == EOF)
{
if (ferror(this->fp))
fatal_intl_read(this->fn->str_text);
return INPUT_EOF;
}
return c;
}
static string_ty *
filename(input_ty *p)
{
input_file_ty *this;
this = (input_file_ty *)p;
return this->fn;
}
static input_vtbl_ty vtbl =
{
sizeof(input_file_ty),
destruct,
iread,
get,
filename,
};
input_ty *
input_file_open(string_ty *fn)
{
input_ty *result;
input_file_ty *this;
if (!fn)
return input_stdin();
result = input_new(&vtbl);
this = (input_file_ty *) result;
this->fp = fopen_and_check(fn->str_text, "rb");
this->fn = str_copy(fn);
return result;
}
|