diff options
Diffstat (limited to 'iconvdata/johab.c')
| -rw-r--r-- | iconvdata/johab.c | 546 |
1 files changed, 214 insertions, 332 deletions
diff --git a/iconvdata/johab.c b/iconvdata/johab.c index c9912a7..6a582c0 100644 --- a/iconvdata/johab.c +++ b/iconvdata/johab.c @@ -1,7 +1,8 @@ /* Mapping tables for JOHAB handling. Copyright (C) 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. - Contributed by Jungshik Shin <jshin@pantheon.yale.edu>, 1998. + Contributed by Jungshik Shin <jshin@pantheon.yale.edu> + and Ulrich Drepper <drepper@cygnus.com>, 1998. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as @@ -18,16 +19,9 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <gconv.h> #include <stdint.h> -#include <string.h> -#include <wchar.h> #include <ksc5601.h> -/* Direction of the transformation. */ -static int to_johab_object; -static int from_johab_object; - /* The table for Bit pattern to Hangul Jamo 5 bits each are used to encode leading consonants(19 + 1 filler), medial vowels(21 + 1 filler) @@ -37,19 +31,19 @@ static int from_johab_object; 0 : Filler, -1: invalid, >= 1 : valid */ -const int init[32] = +static const int init[32] = { -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; -const int mid[32] = +static const int mid[32] = { -1, -1, 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, -1, -1, 12, 13, 14, 15, 16, 17, -1, -1, 18, 19, 20, 21, -1, -1 }; -const int final[32] = +static const int final[32] = { -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, -1, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, -1, -1 @@ -63,14 +57,14 @@ const int final[32] = block [0x3131,0x314e] or Hangul Conjoining Jamo block, [0x1100,0x11ff] */ -const wchar_t init_to_ucs[19] = +static const uint32_t init_to_ucs[19] = { 0x3131, 0x3132, 0x3134, 0x3137, 0x3138, 0x3139, 0x3141, 0x3142, 0x3143, 0x3145, 0x3146, 0x3147, 0x3148, 0x3149, 0x314a, 0x314b, 0x314c, 0x314d, 0x314e }; -const wchar_t final_to_ucs[27] = +static const uint32_t final_to_ucs[27] = { L'\0', L'\0', 0x3133, L'\0', 0x3135, 0x3136, L'\0', L'\0', 0x313a, 0x313b, 0x314c, 0x313d, 0x313e, 0x313f, @@ -88,7 +82,7 @@ const wchar_t final_to_ucs[27] = to get the same result arithmetically. */ -const int init_to_bit[19] = +static const int init_to_bit[19] = { 0x8800, 0x8c00, 0x9000, 0x9400, 0x9800, 0x9c00, 0xa000, 0xa400, 0xa800, 0xac00, 0xb000, 0xb400, @@ -96,7 +90,7 @@ const int init_to_bit[19] = 0xd000 }; -const int mid_to_bit[21] = +static const int mid_to_bit[21] = { 0x0060, 0x0080, 0x00a0, 0x00c0, 0x00e0, 0x0140, 0x0160, 0x0180, 0x01a0, 0x01c0, 0x1e0, @@ -104,7 +98,7 @@ const int mid_to_bit[21] = 0x0340, 0x0360, 0x0380, 0x03a0 }; -const int final_to_bit[28] = +static const int final_to_bit[28] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d @@ -118,7 +112,7 @@ const int final_to_bit[28] = 2. Unicode 2.0 manual */ -const uint16_t jamo_from_ucs_table[51] = +static const uint16_t jamo_from_ucs_table[51] = { 0x8841, 0x8c41, 0x8444, @@ -137,21 +131,20 @@ const uint16_t jamo_from_ucs_table[51] = }; -static inline wchar_t -johab_sym_hanja_to_ucs (int idx, int c1, int c2) +static inline uint32_t +johab_sym_hanja_to_ucs (uint_fast32_t idx, uint_fast32_t c1, uint_fast32_t c2) { if (idx <= 0xdefe) - return (wchar_t) ksc5601_sym_to_ucs[(c1 - 0xd9) * 188 + c2 - - (c2 > 0x90 ? 0x43 : 0x31)]; + return (uint32_t) __ksc5601_sym_to_ucs[(c1 - 0xd9) * 188 + c2 + - (c2 > 0x90 ? 0x43 : 0x31)]; else - return (wchar_t) ksc5601_hanja_to_ucs[(c1 - 0xe0) * 188 + c2 - - (c2 > 0x90 ? 0x43 : 0x31)]; + return (uint32_t) __ksc5601_hanja_to_ucs[(c1 - 0xe0) * 188 + c2 + - (c2 > 0x90 ? 0x43 : 0x31)]; } static uint16_t -johab_hanja_from_ucs (wchar_t ch) +johab_hanja_from_ucs (uint32_t ch) { - uint16_t idx; if (ucs4_to_ksc5601_hanja (ch, &idx)) { @@ -168,7 +161,7 @@ johab_hanja_from_ucs (wchar_t ch) } static uint16_t -johab_sym_from_ucs (wchar_t ch) +johab_sym_from_ucs (uint32_t ch) { uint16_t idx; if (ucs4_to_ksc5601_sym (ch, &idx)) @@ -186,9 +179,8 @@ johab_sym_from_ucs (wchar_t ch) } - static inline void -johab_from_ucs4 (wchar_t ch, unsigned char *cp) +johab_from_ucs4 (uint32_t ch, unsigned char *cp) { if (ch >= 0x7f) { @@ -215,315 +207,205 @@ johab_from_ucs4 (wchar_t ch, unsigned char *cp) else idx = johab_sym_from_ucs (ch); - *cp = (char) (idx / 256); - *(cp + 1) = (char) (idx & 0xff); + cp[0] = (unsigned char) (idx / 256); + cp[1] = (unsigned char) (idx & 0xff); } else { - *cp = (char) (0x7f & ch); - *(cp + 1) = (char) 0; + cp[0] = (unsigned char) ch; + cp[1] = 0; } - -} - - -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "JOHAB") != NULL) - step->data = &from_johab_object; - else if (strcasestr (step->to_name, "JOHAB") != NULL) - step->data = &to_johab_object; - else - return GCONV_NOCONV; - - return GCONV_OK; -} - - -void -gconv_end (struct gconv_step *data) -{ - /* Nothing to do. */ } -int -gconv (struct gconv_step *step, struct gconv_step_data *data, - const char *inbuf, size_t *inbufsize, size_t * written, int do_flush) -{ - struct gconv_step *next_step = step + 1; - struct gconv_step_data *next_data = data + 1; - gconv_fct fct = next_step->fct; - size_t do_write; - int result; - - /* If the function is called with no input this means we have to reset - to the initial state. The possibly partly converted input is - dropped. */ - if (do_flush) - { - do_write = 0; - - /* Call the steps down the chain if there are any. */ - if (data->is_last) - result = GCONV_OK; - else - { - struct gconv_step *next_step = step + 1; - struct gconv_step_data *next_data = data + 1; - - result = (*fct) (next_step, next_data, NULL, 0, written, 1); - - /* Clear output buffer. */ - data->outbufavail = 0; - } - } - else - { - do_write = 0; - - do - { - result = GCONV_OK; - - if (step->data == &from_johab_object) - { - size_t inchars = *inbufsize; - size_t outwchars = data->outbufavail; - char *outbuf = data->outbuf; - size_t cnt = 0; - - while (cnt < inchars - && (outwchars + sizeof (wchar_t) <= data->outbufsize)) - { - int inchar = (unsigned char) inbuf[cnt]; - wchar_t ch; - /* half-width Korean Currency WON sign - if (inchar == 0x5c) - ch = 0x20a9; - else if (inchar < 0x7f) - ch = (wchar_t) inchar; - */ - if (inchar < 0x7f) - ch = (wchar_t) inchar; - - /* Johab : 1. Hangul - 1st byte : 0x84-0xd3 - 2nd byte : 0x41-0x7e, 0x81-0xfe - 2. Hanja & Symbol : - 1st byte : 0xd8-0xde, 0xe0-0xf9 - 2nd byte : 0x31-0x7e, 0x91-0xfe - 0xd831-0xd87e and 0xd891-0xd8fe are user-defined area */ - - else if (inchar > 0xf9 || inchar == 0xdf - || (inchar > 0x7e && inchar < 0x84) - || (inchar > 0xd3 && inchar < 0xd9)) - /* These are illegal. */ - ch = L'\0'; - else - { - /* Two-byte character. First test whether the next - character is also available. */ - int inchar2; - int idx; - - if (cnt + 1 >= inchars) - { - /* The second character is not available. Store - the intermediate result. */ - result = GCONV_INCOMPLETE_INPUT; - break; - } - - inchar2 = (unsigned char) inbuf[++cnt]; - idx = inchar * 256 + inchar2; - if (inchar <= 0xd3) - { /* Hangul */ - int i, m, f; - i = init[(idx & 0x7c00) >> 10]; - m = mid[(idx & 0x03e0) >> 5]; - f = final[idx & 0x001f]; - if (i == -1 || m == -1 || f == -1) - /* This is illegal. */ - ch = L'\0'; - else if (i > 0 && m > 0) - ch = ((i - 1) * 21 + (m - 1)) * 28 + f + 0xac00; - else if (i > 0 && m == 0 & f == 0) - ch = init_to_ucs[i - 1]; - else if (i == 0 && m > 0 & f == 0) - ch = 0x314e + m; /* 0x314f + m - 1 */ - else if (i == 0 && m == 0 & f > 0) - ch = final_to_ucs[f - 1]; /* round trip?? */ - else - /* This is illegal. */ - ch = L'\0'; - } - else - { - if (inchar2 < 0x31 - || (inchar2 > 0x7e && inchar2 < 0x91) - || inchar2 == 0xff) - /* This is illegal. */ - ch = L'\0'; - else if (inchar == 0xda - && inchar2 > 0xa0 && inchar2 < 0xd4) - /* This is illegal. */ - /* Modern Hangul Jaso is defined elsewhere - in Johab */ - ch = L'\0'; - else - { - ch = johab_sym_hanja_to_ucs (idx, inchar, - inchar2); - /* if (idx <= 0xdefe) - ch = ksc5601_sym_to_ucs[(inchar - 0xd9) * 192 - + inchar2 - - (inchar2>0x90 ? 0x43 : 0x31)]; - - else - ch = ksc5601_hanja_to_ucs[(inchar - 0xe0) *192 - + inchar2 - - (inchar2>0x90 ? 0x43 : 0x31)]; - */ - } - } - - if (ch == L'\0') - --cnt; - } - - if (ch == L'\0' && inbuf[cnt] != '\0') - { - /* This is an illegal character. */ - result = GCONV_ILLEGAL_INPUT; - break; - } - - *((wchar_t *) (outbuf + outwchars)) = ch; - ++do_write; - outwchars += sizeof (wchar_t); - ++cnt; - } - *inbufsize -= cnt; - inbuf += cnt; - data->outbufavail = outwchars; - } - else - { - size_t inwchars = *inbufsize; - size_t outchars = data->outbufavail; - char *outbuf = data->outbuf; - size_t cnt = 0; - int extra = 0; - - while (inwchars >= cnt + sizeof (wchar_t) - && outchars < data->outbufsize) - { - wchar_t ch = *((wchar_t *) (inbuf + cnt)); - unsigned char cp[2]; - /* - if (ch >= (sizeof (from_ucs4_lat1) - / sizeof (from_ucs4_lat1[0]))) - { - if (ch >= 0x0391 && ch <= 0x0451) - cp = from_ucs4_greek[ch - 0x391]; - else if (ch >= 0x2010 && ch <= 0x9fa0) - cp = from_ucs4_cjk[ch - 0x02010]; - else - break; - } - else - cp = from_ucs4_lat1[ch]; - */ - johab_from_ucs4 (ch, cp); - - if (cp[0] == '\0' && ch != 0) - /* Illegal character. */ - break; - - outbuf[outchars] = cp[0]; - /* Now test for a possible second byte and write this - if possible. */ - if (cp[1] != '\0') - { - if (outchars + 1 >= data->outbufsize) - { - /* The result does not fit into the buffer. */ - extra = 1; - break; - } - outbuf[++outchars] = cp[1]; - } - - ++do_write; - ++outchars; - cnt += sizeof (wchar_t); - } - *inbufsize -= cnt; - inbuf += cnt; - data->outbufavail = outchars; - - if (outchars + extra < data->outbufsize) - { - /* If there is still room in the output buffer something - is wrong with the input. */ - if (inwchars >= cnt + sizeof (wchar_t)) - { - /* An error occurred. */ - result = GCONV_ILLEGAL_INPUT; - break; - } - if (inwchars != cnt) - { - /* There are some unprocessed bytes at the end of the - input buffer. */ - result = GCONV_INCOMPLETE_INPUT; - break; - } - } - } - - if (result != GCONV_OK) - break; - - if (data->is_last) - { - /* This is the last step. */ - result = (*inbufsize > (step->data == &from_johab_object - ? 0 : sizeof (wchar_t) - 1) - ? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT); - break; - } - - /* Status so far. */ - result = GCONV_EMPTY_INPUT; - - if (data->outbufavail > 0) - { - /* Call the functions below in the chain. */ - size_t newavail = data->outbufavail; - - result = (*fct) (next_step, next_data, data->outbuf, &newavail, - written, 0); - - /* Correct the output buffer. */ - if (newavail != data->outbufavail && newavail > 0) - { - memmove (data->outbuf, - &data->outbuf[data->outbufavail - newavail], - newavail); - data->outbufavail = newavail; - } - } - } - while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT); - } - - if (written != NULL && data->is_last) - *written = do_write; - - return result; -} +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "JOHAB" +#define FROM_LOOP from_johab +#define TO_LOOP to_johab +#define DEFINE_INIT 1 +#define DEFINE_FINI 1 +#define MIN_NEEDED_FROM 1 +#define MAX_NEEDED_FROM 2 +#define MIN_NEEDED_TO 4 + + +/* First define the conversion function from JOHAB to UCS4. */ +#define MIN_NEEDED_INPUT MIN_NEEDED_FROM +#define MAX_NEEDED_INPUT MAX_NEEDED_FROM +#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO +#define LOOPFCT FROM_LOOP +#define BODY \ + { \ + uint32_t ch = *inptr; \ + \ + /* half-width Korean Currency WON sign \ + if (ch == 0x5c) \ + ch = 0x20a9; \ + else if (ch < 0x7f) \ + ch = (wchar_t) ch; \ + */ \ + if (ch < 0x7f) \ + /* Plain ASCII. */ \ + ++inptr; \ + /* Johab : 1. Hangul \ + 1st byte : 0x84-0xd3 \ + 2nd byte : 0x41-0x7e, 0x81-0xfe \ + 2. Hanja & Symbol : \ + 1st byte : 0xd8-0xde, 0xe0-0xf9 \ + 2nd byte : 0x31-0x7e, 0x91-0xfe \ + 0xd831-0xd87e and 0xd891-0xd8fe are user-defined area */ \ + else \ + { \ + if (ch > 0xf9 || ch == 0xdf || (ch > 0x7e && ch < 0x84) \ + || (ch > 0xd3 && ch < 0xd9)) \ + { \ + /* These are illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else \ + { \ + /* Two-byte character. First test whether the next \ + character is also available. */ \ + uint32_t ch2; \ + uint_fast32_t idx; \ + \ + if (NEED_LENGTH_TEST && inptr + 1 >= inend) \ + { \ + /* The second character is not available. Store the \ + intermediate result. */ \ + result = GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + ch2 = inptr[1]; \ + idx = ch * 256 + ch2; \ + if (ch <= 0xd3) \ + { \ + /* Hangul */ \ + uint_fast32_t i, m, f; \ + \ + i = init[(idx & 0x7c00) >> 10]; \ + m = mid[(idx & 0x03e0) >> 5]; \ + f = final[idx & 0x001f]; \ + \ + if (i == -1 || m == -1 || f == -1) \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else if (i > 0 && m > 0) \ + ch = ((i - 1) * 21 + (m - 1)) * 28 + f + 0xac00; \ + else if (i > 0 && m == 0 & f == 0) \ + ch = init_to_ucs[i - 1]; \ + else if (i == 0 && m > 0 & f == 0) \ + ch = 0x314e + m; /* 0x314f + m - 1 */ \ + else if (i == 0 && m == 0 & f > 0) \ + ch = final_to_ucs[f - 1]; /* round trip?? */ \ + else \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + } \ + else \ + { \ + if (ch2 < 0x31 || (ch2 > 0x7e && ch2 < 0x91) || ch2 == 0xff) \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else if (ch == 0xda && ch2 > 0xa0 && ch2 < 0xd4) \ + { \ + /* This is illegal. Modern Hangul Jaso is defined \ + elsewhere in Johab */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else \ + { \ + ch = johab_sym_hanja_to_ucs (idx, ch, ch2); \ + /* if (idx <= 0xdefe) \ + ch = __ksc5601_sym_to_ucs[(ch - 0xd9) * 192 \ + + ch2 - (ch2 > 0x90 \ + ? 0x43 : 0x31)]; \ + else \ + ch = __ksc5601_hanja_to_ucs[(ch - 0xe0) *192 \ + + ch2 - (ch2 > 0x90 \ + ?0x43 : 0x31)];\ + */ \ + } \ + } \ + } \ + \ + if (ch == 0) \ + { \ + /* This is an illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + inptr += 2; \ + } \ + \ + *((uint32_t *) outptr)++ = ch; \ + } +#include <iconv/loop.c> + + +/* Next, define the other direction. */ +#define MIN_NEEDED_INPUT MIN_NEEDED_TO +#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM +#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM +#define LOOPFCT TO_LOOP +#define BODY \ + { \ + uint32_t ch = *((uint32_t *) inptr); \ + unsigned char cp[2]; \ + /* \ + if (ch >= (sizeof (from_ucs4_lat1) / sizeof (from_ucs4_lat1[0]))) \ + { \ + if (ch >= 0x0391 && ch <= 0x0451) \ + cp = from_ucs4_greek[ch - 0x391]; \ + else if (ch >= 0x2010 && ch <= 0x9fa0) \ + cp = from_ucs4_cjk[ch - 0x02010]; \ + else \ + break; \ + } \ + else \ + cp = from_ucs4_lat1[ch]; \ + */ \ + johab_from_ucs4 (ch, cp); \ + \ + if (cp[0] == '\0' && ch != 0) \ + { \ + /* Illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + *outptr++ = cp[0]; \ + /* Now test for a possible second byte and write this if possible. */ \ + if (cp[1] != '\0') \ + { \ + if (NEED_LENGTH_TEST && outptr >= outend) \ + { \ + /* The result does not fit into the buffer. */ \ + --outptr; \ + result = GCONV_FULL_OUTPUT; \ + break; \ + } \ + *outptr++ = cp[1]; \ + } \ + \ + inptr += 4; \ + } +#include <iconv/loop.c> + + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |