/* Conversion from and to IBM1364. Copyright (C) 2005-2014 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Masahide Washizawa <washi@jp.ibm.com>, 2005. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <dlfcn.h> #include <stdint.h> #include <wchar.h> #include <byteswap.h> #ifndef CHARSET_NAME /* This is really the IBM1364 converter, not another module sharing the code. */ # define DATA_HEADER "ibm1364.h" # define CHARSET_NAME "IBM1364//" # define FROM_LOOP from_ibm1364 # define TO_LOOP to_ibm1364 # define SB_TO_UCS4 __ibm1364sb_to_ucs4 # define DB_TO_UCS4_IDX __ibm1364db_to_ucs4_idx # define DB_TO_UCS4 __ibm1364db_to_ucs4 # define UCS4_TO_SB_IDX __ucs4_to_ibm1364sb_idx # define UCS4_TO_SB __ucs4_to_ibm1364sb # define UCS4_TO_DB_IDX __ucs4_to_ibm1364db_idx # define UCS4_TO_DB __ucs4_to_ibm1364db # define UCS_LIMIT 0xffff #endif #include DATA_HEADER /* The shift sequences for this charset (it does not use ESC). */ #define SI 0x0F /* Shift In, host code to turn DBCS off. */ #define SO 0x0E /* Shift Out, host code to turn DBCS on. */ /* Definitions used in the body of the `gconv' function. */ #define MIN_NEEDED_FROM 1 #define MAX_NEEDED_FROM 2 #define MIN_NEEDED_TO 4 #ifdef HAS_COMBINED # define MAX_NEEDED_TO 8 #else # define MAX_NEEDED_TO 4 #endif #define ONE_DIRECTION 0 #define PREPARE_LOOP \ int save_curcs; \ int *curcsp = &data->__statep->__count; #define EXTRA_LOOP_ARGS , curcsp /* Definitions of initialization and destructor function. */ #define DEFINE_INIT 1 #define DEFINE_FINI 1 /* Since this is a stateful encoding we have to provide code which resets the output state to the initial state. This has to be done during the flushing. */ #define EMIT_SHIFT_TO_INIT \ if ((data->__statep->__count & ~7) != sb) \ { \ if (FROM_DIRECTION) \ data->__statep->__count &= 7; \ else \ { \ /* We are not in the initial state. To switch back we have \ to emit `SI'. */ \ if (__glibc_unlikely (outbuf >= outend)) \ /* We don't have enough room in the output buffer. */ \ status = __GCONV_FULL_OUTPUT; \ else \ { \ /* Write out the shift sequence. */ \ *outbuf++ = SI; \ data->__statep->__count &= 7; \ } \ } \ } /* Since we might have to reset input pointer we must be able to save and retore the state. */ #define SAVE_RESET_STATE(Save) \ if (Save) \ save_curcs = *curcsp; \ else \ *curcsp = save_curcs /* Current codeset type. */ enum { sb = 0, db = 64 }; /* Subroutine to write out converted UCS4 from IBM-13XX. */ #ifdef HAS_COMBINED # define SUB_COMBINED_UCS_FROM_IBM13XX \ { \ if (res != UCS_LIMIT || ch < __TO_UCS4_COMBINED_MIN \ || ch > __TO_UCS4_COMBINED_MAX) \ { \ put32 (outptr, res); \ outptr += 4; \ } \ else \ { \ /* This is a combined character. Make sure we have room. */ \ if (__glibc_unlikely (outptr + 8 > outend)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ \ const struct divide *cmbp \ = &DB_TO_UCS4_COMB[ch - __TO_UCS4_COMBINED_MIN]; \ assert (cmbp->res1 != 0 && cmbp->res2 != 0); \ \ put32 (outptr, cmbp->res1); \ outptr += 4; \ put32 (outptr, cmbp->res2); \ outptr += 4; \ } \ } #else # define SUB_COMBINED_UCS_FROM_IBM13XX \ { \ put32 (outptr, res); \ outptr += 4; \ } #endif /* HAS_COMBINED */ /* First, define the conversion function from IBM-13XX 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; \ \ if (__builtin_expect (ch, 0) == SO) \ { \ /* Shift OUT, change to DBCS converter. */ \ if (curcs == db) \ { \ result = __GCONV_ILLEGAL_INPUT; \ break; \ } \ curcs = db; \ ++inptr; \ continue; \ } \ if (__builtin_expect (ch, 0) == SI) \ { \ /* Shift IN, change to SBCS converter. */ \ if (curcs == sb) \ { \ result = __GCONV_ILLEGAL_INPUT; \ break; \ } \ curcs = sb; \ ++inptr; \ continue; \ } \ \ if (curcs == sb) \ { \ /* Use the IBM13XX table for single byte. */ \ uint32_t res = SB_TO_UCS4[ch]; \ if (__builtin_expect (res, L'\1') == L'\0' && ch != '\0') \ { \ /* This is an illegal character. */ \ if (! ignore_errors_p ()) \ { \ result = __GCONV_ILLEGAL_INPUT; \ break; \ } \ ++*irreversible; \ } \ else \ { \ put32 (outptr, res); \ outptr += 4; \ } \ ++inptr; \ } \ else \ { \ assert (curcs == db); \ \ if (__glibc_unlikely (inptr + 1 >= inend)) \ { \ /* The second character is not available. Store the \ intermediate result. */ \ result = __GCONV_INCOMPLETE_INPUT; \ break; \ } \ \ ch = (ch * 0x100) + inptr[1]; \ \ /* Use the IBM1364 table for double byte. */ \ const struct gap *rp2 = DB_TO_UCS4_IDX; \ while (ch > rp2->end) \ ++rp2; \ \ uint32_t res; \ if (__builtin_expect (ch < rp2->start, 0) \ || (res = DB_TO_UCS4[ch + rp2->idx], \ __builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \ { \ /* This is an illegal character. */ \ if (! ignore_errors_p ()) \ { \ result = __GCONV_ILLEGAL_INPUT; \ break; \ } \ ++*irreversible; \ } \ else \ { \ SUB_COMBINED_UCS_FROM_IBM13XX; \ } \ inptr += 2; \ } \ } #define LOOP_NEED_FLAGS #define EXTRA_LOOP_DECLS , int *curcsp #define INIT_PARAMS int curcs = *curcsp & ~7 #define UPDATE_PARAMS *curcsp = curcs #include <iconv/loop.c> /* Subroutine to convert two UCS4 codes to IBM-13XX. */ #ifdef HAS_COMBINED # define SUB_COMBINED_UCS_TO_IBM13XX \ { \ const struct combine *cmbp = UCS4_COMB_TO_DB; \ while (cmbp->res1 < ch) \ ++cmbp; \ /* XXX if last char is beginning of combining store in state */ \ if (cmbp->res1 == ch && inptr + 4 < inend) \ { \ /* See if input is part of a combined character. */ \ uint32_t ch_next = get32 (inptr + 4); \ while (cmbp->res2 != ch_next) \ { \ ++cmbp; \ if (cmbp->res1 != ch) \ goto not_combined; \ } \ \ /* It is a combined character. First make sure we are in \ double byte mode. */ \ if (curcs == sb) \ { \ /* We know there is room for at least one byte. */ \ *outptr++ = SO; \ curcs = db; \ } \ \ if (__glibc_unlikely (outptr + 2 > outend)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ *outptr++ = cmbp->ch[0]; \ *outptr++ = cmbp->ch[1]; \ inptr += 8; \ continue; \ \ not_combined:; \ } \ } #else # define SUB_COMBINED_UCS_TO_IBM13XX #endif /* HAS_COMBINED */ /* 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 = get32 (inptr); \ \ if (__glibc_unlikely (ch >= UCS_LIMIT)) \ { \ UNICODE_TAG_HANDLER (ch, 4); \ \ if (! ignore_errors_p ()) \ { \ result = __GCONV_ILLEGAL_INPUT; \ break; \ } \ ++*irreversible; \ inptr += 4; \ continue; \ } \ \ SUB_COMBINED_UCS_TO_IBM13XX; \ \ const struct gap *rp1 = UCS4_TO_SB_IDX; \ while (ch > rp1->end) \ ++rp1; \ \ /* Use the UCS4 table for single byte. */ \ const char *cp; \ if (__builtin_expect (ch < rp1->start, 0) \ || (cp = UCS4_TO_SB[ch + rp1->idx], \ __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \ { \ /* Use the UCS4 table for double byte. */ \ const struct gap *rp2 = UCS4_TO_DB_IDX; \ while (ch > rp2->end) \ ++rp2; \ \ if (__builtin_expect (ch < rp2->start, 0) \ || (cp = UCS4_TO_DB[ch + rp2->idx], \ __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \ { \ /* This is an illegal character. */ \ if (! ignore_errors_p ()) \ { \ result = __GCONV_ILLEGAL_INPUT; \ break; \ } \ ++*irreversible; \ } \ else \ { \ if (curcs == sb) \ { \ /* We know there is room for at least one byte. */ \ *outptr++ = SO; \ curcs = db; \ } \ \ if (__glibc_unlikely (outptr + 2 > outend)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ *outptr++ = cp[0]; \ *outptr++ = cp[1]; \ } \ } \ else \ { \ if (__glibc_unlikely (curcs == db)) \ { \ /* We know there is room for at least one byte. */ \ *outptr++ = SI; \ curcs = sb; \ \ if (__glibc_unlikely (outptr >= outend)) \ { \ result = __GCONV_FULL_OUTPUT; \ break; \ } \ } \ \ *outptr++ = cp[0]; \ } \ \ /* Now that we wrote the output increment the input pointer. */ \ inptr += 4; \ } #define LOOP_NEED_FLAGS #define EXTRA_LOOP_DECLS , int *curcsp #define INIT_PARAMS int curcs = *curcsp & ~7 #define REINIT_PARAMS curcs = *curcsp & ~7 #define UPDATE_PARAMS *curcsp = curcs #include <iconv/loop.c> /* Now define the toplevel functions. */ #include <iconv/skeleton.c>