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
|
/*
* Copyright (c) 2015 Balabit
* Copyright (c) 2015 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "str-repr/encode.h"
#include "utf8utils.h"
#include <string.h>
void
str_repr_encode_append(GString *escaped_string, const gchar *str, gssize str_len, const gchar *forbidden_chars)
{
const gchar *apostrophe, *quote;
if (str_len < 0)
str_len = strlen(str);
if (str_len == 0)
{
g_string_append_len(escaped_string, "\"\"", 2);
return;
}
apostrophe = memchr(str, '\'', str_len);
quote = memchr(str, '"', str_len);
if (!apostrophe && !quote)
{
gboolean quoting_needed = FALSE;
/* NOTE: for non-NUL terminated strings, this would go over the end of
* the string until the first NUL character. It is not ideal at all,
* but there's no strncspn() */
if ((strcspn(str, "\b\f\n\r\t\\ ")) < str_len ||
(forbidden_chars && strcspn(str, forbidden_chars) < str_len))
quoting_needed = TRUE;
if (!quoting_needed)
{
g_string_append_len(escaped_string, str, str_len);
return;
}
}
if (!apostrophe && quote)
{
g_string_append_c(escaped_string, '\'');
append_unsafe_utf8_as_escaped_binary(escaped_string, str, str_len, NULL);
g_string_append_c(escaped_string, '\'');
}
else if (!quote && apostrophe)
{
g_string_append_c(escaped_string, '"');
append_unsafe_utf8_as_escaped_binary(escaped_string, str, str_len, NULL);
g_string_append_c(escaped_string, '"');
}
else
{
g_string_append_c(escaped_string, '"');
append_unsafe_utf8_as_escaped_binary(escaped_string, str, str_len, "\"");
g_string_append_c(escaped_string, '"');
}
}
void
str_repr_encode(GString *escaped_string, const gchar *str, gssize str_len, const gchar *forbidden_chars)
{
g_string_truncate(escaped_string, 0);
str_repr_encode_append(escaped_string, str, str_len, forbidden_chars);
}
|
