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04be94a8 UD |
1 | /* Generic conversion to and from 8bit charsets, |
2 | converting from UCS using gaps. | |
e438a468 | 3 | Copyright (C) 1997-1999, 2000-2002 Free Software Foundation, Inc. |
f4017d20 UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
6 | ||
7 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either | |
10 | version 2.1 of the License, or (at your option) any later version. | |
f4017d20 UD |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 15 | Lesser General Public License for more details. |
f4017d20 | 16 | |
41bdb6e2 | 17 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
18 | License along with the GNU C Library; if not, see |
19 | <http://www.gnu.org/licenses/>. */ | |
f4017d20 | 20 | |
55985355 | 21 | #include <dlfcn.h> |
2aea1d79 | 22 | #include <stdint.h> |
04be94a8 UD |
23 | |
24 | struct gap | |
25 | { | |
26 | uint16_t start; | |
27 | uint16_t end; | |
9b26f5c4 | 28 | int32_t idx; |
04be94a8 UD |
29 | }; |
30 | ||
31 | /* Now we can include the tables. */ | |
32 | #include TABLES | |
33 | ||
f9ad060c UD |
34 | #ifndef NONNUL |
35 | # define NONNUL(c) ((c) != '\0') | |
36 | #endif | |
37 | ||
f4017d20 | 38 | |
8619129f UD |
39 | #define FROM_LOOP from_gap |
40 | #define TO_LOOP to_gap | |
41 | #define DEFINE_INIT 1 | |
42 | #define DEFINE_FINI 1 | |
43 | #define MIN_NEEDED_FROM 1 | |
44 | #define MIN_NEEDED_TO 4 | |
45 | ||
46 | ||
47 | /* First define the conversion function from the 8bit charset to UCS4. */ | |
48 | #define MIN_NEEDED_INPUT MIN_NEEDED_FROM | |
49 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO | |
50 | #define LOOPFCT FROM_LOOP | |
51 | #define BODY \ | |
52 | { \ | |
53 | uint32_t ch = to_ucs4[*inptr]; \ | |
54 | \ | |
f9ad060c | 55 | if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (*inptr)) \ |
8619129f UD |
56 | { \ |
57 | /* This is an illegal character. */ \ | |
e438a468 | 58 | STANDARD_FROM_LOOP_ERR_HANDLER (1); \ |
85830c4c UD |
59 | } \ |
60 | else \ | |
61 | { \ | |
62 | put32 (outptr, ch); \ | |
63 | outptr += 4; \ | |
8619129f UD |
64 | } \ |
65 | \ | |
8619129f UD |
66 | ++inptr; \ |
67 | } | |
55985355 | 68 | #define LOOP_NEED_FLAGS |
f9ad060c UD |
69 | #define ONEBYTE_BODY \ |
70 | { \ | |
71 | uint32_t ch = to_ucs4[c]; \ | |
72 | \ | |
73 | if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (c)) \ | |
74 | return WEOF; \ | |
75 | else \ | |
76 | return ch; \ | |
77 | } | |
8619129f UD |
78 | #include <iconv/loop.c> |
79 | ||
80 | ||
81 | /* Next, define the other direction. */ | |
82 | #define MIN_NEEDED_INPUT MIN_NEEDED_TO | |
83 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM | |
84 | #define LOOPFCT TO_LOOP | |
85 | #define BODY \ | |
86 | { \ | |
87 | const struct gap *rp = from_idx; \ | |
77e1d15a | 88 | uint32_t ch = get32 (inptr); \ |
8619129f UD |
89 | unsigned char res; \ |
90 | \ | |
db2d05f9 | 91 | if (__builtin_expect (ch >= 0xffff, 0)) \ |
601d2942 UD |
92 | { \ |
93 | UNICODE_TAG_HANDLER (ch, 4); \ | |
94 | rp = NULL; \ | |
95 | } \ | |
d6204268 UD |
96 | else \ |
97 | while (ch > rp->end) \ | |
98 | ++rp; \ | |
99 | if (__builtin_expect (rp == NULL, 0) \ | |
100 | || __builtin_expect (ch < rp->start, 0) \ | |
101 | || (res = from_ucs4[ch + rp->idx], \ | |
102 | __builtin_expect (res, '\1') == '\0' && ch != 0)) \ | |
3cb0cda8 UD |
103 | { \ |
104 | /* This is an illegal character. */ \ | |
e438a468 | 105 | STANDARD_TO_LOOP_ERR_HANDLER (4); \ |
8619129f UD |
106 | } \ |
107 | \ | |
108 | *outptr++ = res; \ | |
109 | inptr += 4; \ | |
110 | } | |
55985355 | 111 | #define LOOP_NEED_FLAGS |
8619129f UD |
112 | #include <iconv/loop.c> |
113 | ||
114 | ||
115 | /* Now define the toplevel functions. */ | |
116 | #include <iconv/skeleton.c> |