1/* Generic conversion to and from 8bit charsets.
2 Copyright (C) 1997-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <dlfcn.h>
20#include <stdint.h>
21
22#define FROM_LOOP from_generic
23#define TO_LOOP to_generic
24#define DEFINE_INIT 1
25#define DEFINE_FINI 1
26#define MIN_NEEDED_FROM 1
27#define MIN_NEEDED_TO 4
28#define ONE_DIRECTION 0
29
30
31/* First define the conversion function from the 8bit charset to UCS4. */
32#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
33#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
34#define LOOPFCT FROM_LOOP
35#define BODY \
36 { \
37 uint32_t ch = to_ucs4[*inptr]; \
38 \
39 if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && *inptr != '\0') \
40 { \
41 /* This is an illegal character. */ \
42 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
43 } \
44 \
45 put32 (outptr, ch); \
46 outptr += 4; \
47 ++inptr; \
48 }
49#define LOOP_NEED_FLAGS
50#define ONEBYTE_BODY \
51 { \
52 uint32_t ch = to_ucs4[c]; \
53 \
54 if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && c != '\0') \
55 return WEOF; \
56 else \
57 return ch; \
58 }
59#include <iconv/loop.c>
60
61
62/* Next, define the other direction. */
63#define MIN_NEEDED_INPUT MIN_NEEDED_TO
64#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
65#define LOOPFCT TO_LOOP
66#define BODY \
67 { \
68 uint32_t ch = get32 (inptr); \
69 \
70 if (__builtin_expect (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]), 0)\
71 || (__builtin_expect (from_ucs4[ch], '\1') == '\0' && ch != 0)) \
72 { \
73 UNICODE_TAG_HANDLER (ch, 4); \
74 \
75 /* This is an illegal character. */ \
76 STANDARD_TO_LOOP_ERR_HANDLER (4); \
77 } \
78 \
79 *outptr++ = from_ucs4[ch]; \
80 inptr += 4; \
81 }
82#define LOOP_NEED_FLAGS
83#include <iconv/loop.c>
84
85
86/* Now define the toplevel functions. */
87#include <iconv/skeleton.c>
88