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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
/*
* This file is part of The Croco Library
*
* Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
/*
*$Id$
*/
/**
*@file
*The definition of the #CREncHandler class.
*/
#include "cr-enc-handler.h"
#include "cr-utils.h"
#include <string.h>
struct CREncAlias {
const gchar *name;
enum CREncoding encoding;
};
static struct CREncAlias gv_default_aliases[] = {
{"UTF-8", CR_UTF_8},
{"UTF_8", CR_UTF_8},
{"UTF8", CR_UTF_8},
{"UTF-16", CR_UTF_16},
{"UTF_16", CR_UTF_16},
{"UTF16", CR_UTF_16},
{"UCS1", CR_UCS_1},
{"UCS-1", CR_UCS_1},
{"UCS_1", CR_UCS_1},
{"ISO-8859-1", CR_UCS_1},
{"ISO_8859-1", CR_UCS_1},
{"UCS-1", CR_UCS_1},
{"UCS_1", CR_UCS_1},
{"UCS4", CR_UCS_4},
{"UCS-4", CR_UCS_4},
{"UCS_4", CR_UCS_4},
{"ASCII", CR_ASCII},
{0, 0}
};
static CREncHandler gv_default_enc_handlers[] = {
{CR_UCS_1, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1,
cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1},
{CR_ISO_8859_1, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1,
cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1},
{CR_ASCII, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1,
cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1},
{0, NULL, NULL, NULL, NULL}
};
/**
*Gets the instance of encoding handler.
*This function implements a singleton pattern.
*@param a_enc the encoding of the Handler.
*@return the instance of #CREncHandler.
*/
CREncHandler *
cr_enc_handler_get_instance (enum CREncoding a_enc)
{
gulong i = 0;
for (i = 0; gv_default_enc_handlers[i].encoding; i++) {
if (gv_default_enc_handlers[i].encoding == a_enc) {
return (CREncHandler *)
& gv_default_enc_handlers[i].encoding;
}
}
return NULL;
}
/**
*Given an encoding name (called an alias name)
*the function returns the matching encoding type.
*@param a_alias_name the encoding name
*@param a_enc output param. The returned encoding type
*or 0 if the alias is not supported.
*@return CR_OK upon successfull completion, an error code otherwise.
*/
enum CRStatus
cr_enc_handler_resolve_enc_alias (const guchar * a_alias_name,
enum CREncoding *a_enc)
{
gulong i = 0;
guchar *alias_name_up = NULL;
enum CRStatus status = CR_ENCODING_NOT_FOUND_ERROR;
g_return_val_if_fail (a_alias_name != NULL, CR_BAD_PARAM_ERROR);
alias_name_up = g_strdup (a_alias_name);
g_ascii_strup (alias_name_up, -1);
for (i = 0; gv_default_aliases[i].name; i++) {
if (!strcmp (gv_default_aliases[i].name, alias_name_up)) {
*a_enc = gv_default_aliases[i].encoding;
status = CR_OK;
break;
}
}
return status;
}
/**
*Converts a raw input buffer into an utf8 buffer.
*@param a_this the current instance of #CREncHandler.
*@param a_in the input buffer to convert.
*@param a_in_len in/out parameter. The len of the input
*buffer to convert. After return, contains the number of
*bytes actually consumed.
*@param @a_out output parameter. The converted output buffer.
*Must be freed by the buffer.
*@param a_out_len output parameter. The length of the output buffer.
*@return CR_OK upon successfull completion, an error code otherwise.
*/
enum CRStatus
cr_enc_handler_convert_input (CREncHandler * a_this,
const guchar * a_in,
gulong * a_in_len,
guchar ** a_out, gulong * a_out_len)
{
enum CRStatus status = CR_OK;
g_return_val_if_fail (a_this && a_in && a_in_len && a_out,
CR_BAD_PARAM_ERROR);
if (a_this->decode_input == NULL)
return CR_OK;
if (a_this->enc_str_len_as_utf8) {
status = a_this->enc_str_len_as_utf8 (a_in,
&a_in[*a_in_len - 1],
a_out_len);
g_return_val_if_fail (status == CR_OK, status);
} else {
*a_out_len = *a_in_len;
}
*a_out = g_malloc0 (*a_out_len);
status = a_this->decode_input (a_in, a_in_len, *a_out, a_out_len);
if (status != CR_OK) {
g_free (*a_out);
*a_out = NULL;
}
g_return_val_if_fail (status == CR_OK, status);
return CR_OK;
}
|
