| /* |
| * Copyright (c) 2003-2004, Artem B. Bityuckiy |
| * Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| /* |
| FUNCTION |
| <<iconv>>, <<iconv_open>>, <<iconv_close>>---charset conversion routines |
| |
| INDEX |
| iconv |
| INDEX |
| iconv_open |
| INDEX |
| iconv_close |
| INDEX |
| _iconv_r |
| INDEX |
| _iconv_open_r |
| INDEX |
| _iconv_close_r |
| |
| ANSI_SYNOPSIS |
| #include <iconv.h> |
| iconv_t iconv_open (const char *<[to]>, const char *<[from]>); |
| int iconv_close (iconv_t <[cd]>); |
| size_t iconv (iconv_t <[cd]>, char **<[inbuf]>, |
| size_t *<[inbytesleft]>, |
| char **<[outbuf]>, size_t *<[outbytesleft]>), |
| |
| iconv_t _iconv_open_r (struct _reent *<[rptr]>, |
| const char *<[to]>, const char *<[from]>); |
| int _iconv_close_r (struct _reent *<[rptr]>, iconv_t <[cd]>); |
| size_t _iconv_r (struct _reent *<[rptr]>, |
| iconv_t <[cd]>, const char **<[inbuf]>, |
| size_t *<[inbytesleft]>, |
| char **<[outbuf]>, size_t *<[outbytesleft]>), |
| |
| TRAD_SYNOPSIS |
| #include <iconv.h> |
| size_t iconv (<[cd]>, <[in]>, <[inleft]>, <[out]>, <[outleft]>) |
| iconv_t <[cd]>; |
| char **<[in]>; |
| size_t *<[inleft]>; |
| char **<[out]>; |
| size_t *<[outleft]>); |
| |
| #include <iconv.h> |
| iconv_t iconv_open (<[to]>, <[from]>); |
| const char *<[to]>; |
| const char *<[from]>; |
| |
| #include <iconv.h> |
| int iconv_close (<[cd]>); |
| iconv_t <[cd]>; |
| |
| #include <iconv.h> |
| size_t _iconv_r (<[rptr]>, <[cd]>, <[in]>, <[inleft]>, <[out]>, <[outleft]>) |
| struct _reent *<[rptr]>; |
| iconv_t <[cd]>; |
| const char **<[in]>; |
| size_t *<[inleft]>; |
| char **<[out]>; |
| size_t *<[outleft]>); |
| |
| #include <iconv.h> |
| iconv_t _iconv_open_r (<[rptr]>, <[to]>, <[from]>); |
| struct _reent *<[rptr]>; |
| const char *<[to]>; |
| const char *<[from]>; |
| |
| #include <iconv.h> |
| int iconv_close (<[rptr]>, <[cd]>); |
| struct _reent *<[rptr]>; |
| iconv_t <[cd]>; |
| |
| DESCRIPTION |
| The function <<iconv>> converts characters from <[in]> which are in one |
| encoding to characters of another encoding, outputting them to <[out]>. |
| The value <[inleft]> specifies the number of input bytes to convert whereas |
| the value <[outleft]> specifies the size remaining in the <[out]> buffer. |
| The conversion descriptor <[cd]> specifies the conversion being performed |
| and is created via <<iconv_open>>. |
| |
| An <<iconv>> conversion stops if: the input bytes are exhausted, the output |
| buffer is full, an invalid input character sequence occurs, or the |
| conversion specifier is invalid. |
| |
| The function <<iconv_open>> is used to specify a conversion from one |
| encoding: <[from]> to another: <[to]>. The result of the call is |
| to create a conversion specifier that can be used with <<iconv>>. |
| |
| The function <<iconv_close>> is used to close a conversion specifier after |
| it is no longer needed. |
| |
| The <<_iconv_r>>, <<_iconv_open_r>>, and <<_iconv_close_r>> functions are |
| reentrant versions of <<iconv>>, <<iconv_open>>, and <<iconv_close>>, |
| respectively. An additional reentrancy struct pointer: <[rptr]> is passed |
| to properly set <<errno>>. |
| |
| RETURNS |
| The <<iconv>> function returns the number of non-identical conversions |
| performed. If an error occurs, (size_t)-1 is returned and <<errno>> |
| is set appropriately. The values of <[inleft]>, <[in]>, <[out]>, |
| and <[outleft]> are modified to indicate how much input was processed |
| and how much output was created. |
| |
| The <<iconv_open>> function returns either a valid conversion specifier |
| or (iconv_t)-1 to indicate failure. If failure occurs, <<errno>> is set |
| appropriately. |
| |
| The <<iconv_close>> function returns 0 on success or -1 on failure. |
| If failure occurs <<errno>> is set appropriately. |
| |
| PORTABILITY |
| <<iconv>>, <<iconv_open>>, and <<iconv_close>> are non-ANSI and are specified |
| by the Single Unix specification. |
| |
| No supporting OS subroutine calls are required. |
| */ |
| #include <_ansi.h> |
| #include <reent.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <iconv.h> |
| #include <wchar.h> |
| #include <sys/iconvnls.h> |
| #include "local.h" |
| #include "conv.h" |
| #include "ucsconv.h" |
| |
| /* |
| * iconv interface functions as specified by Single Unix specification. |
| */ |
| |
| iconv_t |
| _DEFUN(iconv_open, (to, from), |
| _CONST char *to _AND |
| _CONST char *from) |
| { |
| return _iconv_open_r (_REENT, to, from); |
| } |
| |
| |
| size_t |
| _DEFUN(iconv, (cd, inbuf, inbytesleft, outbuf, outbytesleft), |
| iconv_t cd _AND |
| char **inbuf _AND |
| size_t *inbytesleft _AND |
| char **outbuf _AND |
| size_t *outbytesleft) |
| { |
| return _iconv_r (_REENT, cd, (_CONST char **) inbuf, inbytesleft, |
| outbuf, outbytesleft); |
| } |
| |
| |
| int |
| _DEFUN(iconv_close, (cd), iconv_t cd) |
| { |
| return _iconv_close_r (_REENT, cd); |
| } |
| |
| |
| #ifndef _REENT_ONLY |
| iconv_t |
| _DEFUN(_iconv_open_r, (rptr, to, from), |
| struct _reent *rptr _AND |
| _CONST char *to _AND |
| _CONST char *from) |
| { |
| iconv_conversion_t *ic; |
| |
| if (to == NULL || from == NULL || *to == '\0' || *from == '\0') |
| return (iconv_t)-1; |
| |
| if ((to = (_CONST char *)_iconv_resolve_encoding_name (rptr, to)) == NULL) |
| return (iconv_t)-1; |
| |
| if ((from = (_CONST char *)_iconv_resolve_encoding_name (rptr, from)) == NULL) |
| { |
| _free_r (rptr, (_VOID_PTR)to); |
| return (iconv_t)-1; |
| } |
| |
| ic = (iconv_conversion_t *)_malloc_r (rptr, sizeof (iconv_conversion_t)); |
| if (ic == NULL) |
| return (iconv_t)-1; |
| |
| /* Select which conversion type to use */ |
| if (strcmp (from, to) == 0) |
| { |
| /* Use null conversion */ |
| ic->handlers = &_iconv_null_conversion_handlers; |
| ic->data = ic->handlers->open (rptr, to, from); |
| } |
| else |
| { |
| /* Use UCS-based conversion */ |
| ic->handlers = &_iconv_ucs_conversion_handlers; |
| ic->data = ic->handlers->open (rptr, to, from); |
| } |
| |
| _free_r (rptr, (_VOID_PTR)to); |
| _free_r (rptr, (_VOID_PTR)from); |
| |
| if (ic->data == NULL) |
| { |
| _free_r (rptr, (_VOID_PTR)ic); |
| return (iconv_t)-1; |
| } |
| |
| return (_VOID_PTR)ic; |
| } |
| |
| |
| size_t |
| _DEFUN(_iconv_r, (rptr, cd, inbuf, inbytesleft, outbuf, outbytesleft), |
| struct _reent *rptr _AND |
| iconv_t cd _AND |
| _CONST char **inbuf _AND |
| size_t *inbytesleft _AND |
| char **outbuf _AND |
| size_t *outbytesleft) |
| { |
| iconv_conversion_t *ic = (iconv_conversion_t *)cd; |
| |
| if ((_VOID_PTR)cd == NULL || cd == (iconv_t)-1 || ic->data == NULL |
| || (ic->handlers != &_iconv_null_conversion_handlers |
| && ic->handlers != &_iconv_ucs_conversion_handlers)) |
| { |
| __errno_r (rptr) = EBADF; |
| return (size_t)-1; |
| } |
| |
| if (inbuf == NULL || *inbuf == NULL) |
| { |
| mbstate_t state_null = ICONV_ZERO_MB_STATE_T; |
| |
| if (!ic->handlers->is_stateful(ic->data, 1)) |
| return (size_t)0; |
| |
| if (outbuf == NULL || *outbuf == NULL) |
| { |
| /* Reset shift state */ |
| ic->handlers->set_state (ic->data, &state_null, 1); |
| |
| return (size_t)0; |
| } |
| |
| if (outbytesleft != NULL) |
| { |
| mbstate_t state_save = ICONV_ZERO_MB_STATE_T; |
| |
| /* Save current shift state */ |
| ic->handlers->get_state (ic->data, &state_save, 1); |
| |
| /* Reset shift state */ |
| ic->handlers->set_state (ic->data, &state_null, 1); |
| |
| /* Get initial shift state sequence and it's length */ |
| ic->handlers->get_state (ic->data, &state_null, 1); |
| |
| if (*outbytesleft >= state_null.__count) |
| { |
| memcpy ((_VOID_PTR)(*outbuf), (_VOID_PTR)&state_null, state_null.__count); |
| |
| *outbuf += state_null.__count; |
| *outbytesleft -= state_null.__count; |
| |
| return (size_t)0; |
| } |
| |
| /* Restore shift state if output buffer is too small */ |
| ic->handlers->set_state (ic->data, &state_save, 1); |
| } |
| |
| __errno_r (rptr) = E2BIG; |
| return (size_t)-1; |
| } |
| |
| if (*inbytesleft == 0) |
| { |
| __errno_r (rptr) = EINVAL; |
| return (size_t)-1; |
| } |
| |
| if (*outbytesleft == 0 || *outbuf == NULL) |
| { |
| __errno_r (rptr) = E2BIG; |
| return (size_t)-1; |
| } |
| |
| return ic->handlers->convert (rptr, |
| ic->data, |
| (_CONST unsigned char**)inbuf, |
| inbytesleft, |
| (unsigned char**)outbuf, |
| outbytesleft, |
| 0); |
| } |
| |
| |
| int |
| _DEFUN(_iconv_close_r, (rptr, cd), |
| struct _reent *rptr _AND |
| iconv_t cd) |
| { |
| int res; |
| iconv_conversion_t *ic = (iconv_conversion_t *)cd; |
| |
| if ((_VOID_PTR)cd == NULL || cd == (iconv_t)-1 || ic->data == NULL |
| || (ic->handlers != &_iconv_null_conversion_handlers |
| && ic->handlers != &_iconv_ucs_conversion_handlers)) |
| { |
| __errno_r (rptr) = EBADF; |
| return -1; |
| } |
| |
| res = (int)ic->handlers->close (rptr, ic->data); |
| |
| _free_r (rptr, (_VOID_PTR)cd); |
| |
| return res; |
| } |
| #endif /* !_REENT_ONLY */ |