| 1 | /* |
|---|
| 2 | * Copyright (c) 2003-2004, Artem B. Bityuckiy |
|---|
| 3 | * |
|---|
| 4 | * Redistribution and use in source and binary forms, with or without |
|---|
| 5 | * modification, are permitted provided that the following conditions |
|---|
| 6 | * are met: |
|---|
| 7 | * 1. Redistributions of source code must retain the above copyright |
|---|
| 8 | * notice, this list of conditions and the following disclaimer. |
|---|
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
|---|
| 10 | * notice, this list of conditions and the following disclaimer in the |
|---|
| 11 | * documentation and/or other materials provided with the distribution. |
|---|
| 12 | * |
|---|
| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
|---|
| 14 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|---|
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|---|
| 16 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
|---|
| 17 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|---|
| 18 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
|---|
| 19 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|---|
| 20 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|---|
| 21 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
|---|
| 22 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
|---|
| 23 | * SUCH DAMAGE. |
|---|
| 24 | */ |
|---|
| 25 | #include "cesbi.h" |
|---|
| 26 | |
|---|
| 27 | #if defined (ICONV_TO_UCS_CES_US_ASCII) \ |
|---|
| 28 | || defined (ICONV_FROM_UCS_CES_US_ASCII) |
|---|
| 29 | |
|---|
| 30 | #include <_ansi.h> |
|---|
| 31 | #include <reent.h> |
|---|
| 32 | #include <sys/types.h> |
|---|
| 33 | #include "../lib/local.h" |
|---|
| 34 | #include "../lib/ucsconv.h" |
|---|
| 35 | |
|---|
| 36 | /* |
|---|
| 37 | * For optimization purposes us_ascii is implemented as separate CES converter. |
|---|
| 38 | * Another possible way is to add us_ascii CCS and use table-based CES converter. |
|---|
| 39 | */ |
|---|
| 40 | |
|---|
| 41 | #if defined (ICONV_FROM_UCS_CES_US_ASCII) |
|---|
| 42 | static size_t |
|---|
| 43 | us_ascii_convert_from_ucs (void *data, |
|---|
| 44 | ucs4_t in, |
|---|
| 45 | unsigned char **outbuf, |
|---|
| 46 | size_t *outbytesleft) |
|---|
| 47 | { |
|---|
| 48 | if (in > 0x7F) |
|---|
| 49 | return (size_t)ICONV_CES_INVALID_CHARACTER; |
|---|
| 50 | |
|---|
| 51 | *((char *)(*outbuf)) = (char)in; |
|---|
| 52 | |
|---|
| 53 | *outbuf += 1; |
|---|
| 54 | *outbytesleft -= 1; |
|---|
| 55 | |
|---|
| 56 | return 1; |
|---|
| 57 | } |
|---|
| 58 | #endif /* ICONV_FROM_UCS_CES_US_ASCII */ |
|---|
| 59 | |
|---|
| 60 | #if defined (ICONV_TO_UCS_CES_US_ASCII) |
|---|
| 61 | static ucs4_t |
|---|
| 62 | us_ascii_convert_to_ucs (void *data, |
|---|
| 63 | const unsigned char **inbuf, |
|---|
| 64 | size_t *inbytesleft) |
|---|
| 65 | { |
|---|
| 66 | ucs4_t res; |
|---|
| 67 | |
|---|
| 68 | if (*inbytesleft < 1) |
|---|
| 69 | return (ucs4_t)ICONV_CES_BAD_SEQUENCE; |
|---|
| 70 | |
|---|
| 71 | res = (ucs4_t)**inbuf; |
|---|
| 72 | |
|---|
| 73 | if (res > 0x7F) |
|---|
| 74 | return (ucs4_t)ICONV_CES_INVALID_CHARACTER; |
|---|
| 75 | |
|---|
| 76 | *inbytesleft -= 1; |
|---|
| 77 | *inbuf += 1; |
|---|
| 78 | |
|---|
| 79 | return res; |
|---|
| 80 | } |
|---|
| 81 | #endif /* ICONV_TO_UCS_CES_US_ASCII */ |
|---|
| 82 | |
|---|
| 83 | static int |
|---|
| 84 | us_ascii_get_mb_cur_max (void *data) |
|---|
| 85 | { |
|---|
| 86 | return 2; |
|---|
| 87 | } |
|---|
| 88 | |
|---|
| 89 | #if defined (ICONV_TO_UCS_CES_US_ASCII) |
|---|
| 90 | const iconv_to_ucs_ces_handlers_t |
|---|
| 91 | _iconv_to_ucs_ces_handlers_us_ascii = |
|---|
| 92 | { |
|---|
| 93 | NULL, |
|---|
| 94 | NULL, |
|---|
| 95 | us_ascii_get_mb_cur_max, |
|---|
| 96 | NULL, |
|---|
| 97 | NULL, |
|---|
| 98 | NULL, |
|---|
| 99 | us_ascii_convert_to_ucs |
|---|
| 100 | }; |
|---|
| 101 | #endif |
|---|
| 102 | |
|---|
| 103 | #if defined (ICONV_FROM_UCS_CES_US_ASCII) |
|---|
| 104 | const iconv_from_ucs_ces_handlers_t |
|---|
| 105 | _iconv_from_ucs_ces_handlers_us_ascii = |
|---|
| 106 | { |
|---|
| 107 | NULL, |
|---|
| 108 | NULL, |
|---|
| 109 | us_ascii_get_mb_cur_max, |
|---|
| 110 | NULL, |
|---|
| 111 | NULL, |
|---|
| 112 | NULL, |
|---|
| 113 | us_ascii_convert_from_ucs |
|---|
| 114 | }; |
|---|
| 115 | #endif |
|---|
| 116 | |
|---|
| 117 | #endif /* ICONV_TO_UCS_CES_US_ASCII || ICONV_FROM_UCS_CES_US_ASCII */ |
|---|
| 118 | |
|---|
