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Diffstat (limited to 'newlib/libc/iconv/lib/iconvnls.c')
| -rw-r--r-- | newlib/libc/iconv/lib/iconvnls.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/newlib/libc/iconv/lib/iconvnls.c b/newlib/libc/iconv/lib/iconvnls.c new file mode 100644 index 000000000..db88916c8 --- /dev/null +++ b/newlib/libc/iconv/lib/iconvnls.c @@ -0,0 +1,362 @@ +/* + * Copyright (c) 2003-2004, Artem B. Bityuckiy + * + * 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. + */ +#include <_ansi.h> +#include <reent.h> +#include <newlib.h> +#include <sys/types.h> +#include <string.h> +#include <stdlib.h> +#include <sys/iconvnls.h> +#ifdef _MB_CAPABLE +#include <wchar.h> +#include <iconv.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> +#include "local.h" +#include "conv.h" +#include "ucsconv.h" +#include "iconvnls.h" +#endif + +/* + * _iconv_nls_construct_filename -- constructs full file name. + * + * PARAMETERS: + * struct _reent *rptr - reent structure of current thread/process. + * _CONST char *file - the name of file. + * _CONST char *dir - the name of subdirectory; + * _CONST char *ext - file extension. + * + * DESCRIPTION: + * Function constructs patch to icionv-related file. + * 'file' shouldn't be NULL. Doesn't use extension if 'ext' is NULL. + * + * RETURN: + * The pointer to file name if success, In case of error returns NULL + * and sets current thread's/process's errno. + */ +_CONST char * +_DEFUN(_iconv_nls_construct_filename, (rptr, file, ext), + struct _reent *rptr _AND + _CONST char *file _AND + _CONST char *dir _AND + _CONST char *ext) +{ + int len1, len2, len3; + char *path; + char *p; + int dirlen = strlen (dir); + + if ((path = _getenv_r (rptr, NLS_ENVVAR_NAME)) == NULL || *path == '\0') + path = NLS_DEFAULT_NLSPATH; + + len1 = strlen (path); + len2 = strlen (file); + len3 = strlen (ext); + + if ((p = _malloc_r (rptr, len1 + dirlen + len2 + len3 + 3)) == NULL) + return (_CONST char *)NULL; + + memcpy (p, path, len1); + if (p[len1 - 1] != '/') + p[len1++] = '/'; + memcpy (p + len1, dir, dirlen); + len1 += dirlen; + p[len1++] = '/'; + memcpy (p + len1, file, len2); + len1 += len2; + if (ext != NULL) + { + memcpy (p + len1, ext, len3); + len1 += len3; + } + p[len1] = '\0'; + + return (_CONST char *)p; +} + + +#ifdef _MB_CAPABLE +/* + * _iconv_nls_get_mb_cur_max -- return encoding's maximum length + * of a multi-byte character. + * + * PARAMETERS: + * iconv_t cd - opened iconv conversion descriptor; + * int direction - "from encoding" or "to encoding" direction. + * + * DESCRIPTION: + * Return maximum length of a multi-byte character in one of 'cd's + * encoding. Return "from" encoding's value if 'direction' is 0 and + * "to" encoding's value if 'direction' isn't 0. + */ +int +_DEFUN(_iconv_nls_get_mb_cur_max, (cd, direction), + iconv_t cd _AND + int direction) +{ + iconv_conversion_t *ic = (iconv_conversion_t *)cd; + + return ic->handlers->get_mb_cur_max (ic->data, direction); +} + +/* + * _iconv_nls_is_stateful -- is encoding stateful? + * + * PARAMETERS: + * iconv_t cd - opened iconv conversion descriptor; + * int direction - "from encoding" or "to encoding" direction. + * + * DESCRIPTION: + * Returns 0 if encoding is stateless or 1 if stateful. + * Tests "from" encoding if 'direction' is 0 and + * "to" encoding's value if 'direction' isn't 0. + + */ +int +_DEFUN(_iconv_nls_is_stateful, (cd, direction), + iconv_t cd _AND + int direction) +{ + iconv_conversion_t *ic = (iconv_conversion_t *)cd; + + return ic->handlers->is_stateful (ic->data, direction); +} + +/* + * _iconv_nls_conv - special version of iconv for NLS. + * + * PARAMETERS: + * Same as _iconv_r. + * + * DESCRIPTION: + * Function behaves as _iconv_r but: + * 1. Don't handle reset/return shift states queries + * (like iconv does when 'inbuf' == NULL, etc); + * 2. Don't save result if 'outbuf' == NULL or + * '*outbuf' == NULL; + * 3. Don't perform default conversion if there is no character + * in "to" encoding that corresponds to character from "from" + * encoding. + * + * RETURN: + * Same as _iconv_r. + */ +size_t +_DEFUN(_iconv_nls_conv, (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; + int flags = ICONV_FAIL_BIT; + + 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 (inbytesleft == NULL || *inbytesleft == 0) + return (size_t)0; + + if (outbuf == NULL || *outbuf == NULL) + flags |= ICONV_DONT_SAVE_BIT; + + if (outbytesleft == NULL || *outbytesleft == 0) + { + __errno_r (rptr) = E2BIG; + return (size_t)-1; + } + + return ic->handlers->convert (rptr, + ic->data, + (_CONST unsigned char**)inbuf, + inbytesleft, + (unsigned char**)outbuf, + outbytesleft, + flags); +} + +/* + * _iconv_nls_get_state -- get encoding's current shift state value. + * + * PARAMETERS: + * iconv_t cd - iconv descriptor; + * mbstate_t *ps - where to save shift state; + * int direction - "from" encoding if 0, "to" encoding if 1. + * + * DESCRIPTION: + * Save encoding's current shift state to 'ps'. Save "from" encoding's + * shift state if 'direction' is 0 and "to" encodings's shift state + * if 'direction' isn't 0. + */ +_VOID +_DEFUN(_iconv_nls_get_state, (cd, ps, direction), + iconv_t cd _AND + mbstate_t *ps _AND + int direction) +{ + iconv_conversion_t *ic = (iconv_conversion_t *)cd; + + ic->handlers->get_state (ic->data, ps, direction); + + return; +} + +/* + * _iconv_nls_set_state -- set encoding's current shift state value. + * + * PARAMETERS: + * iconv_t cd - iconv descriptor; + * mbstate_t *ps - where to save shift state. + * int direction - "from" encoding if 0, "to" encoding if 1. + * + * DESCRIPTION: + * Set encoding's current shift state. + * + * RETURN: + * 0 if success, -1 if failure. + */ +int +_DEFUN(_iconv_nls_set_state, (cd, ps, direction), + iconv_t cd _AND + mbstate_t *ps _AND + int direction) +{ + iconv_conversion_t *ic = (iconv_conversion_t *)cd; + + return ic->handlers->set_state (ic->data, ps, direction); +} + +/* Same as iconv_open() but don't perform name resolving */ +static iconv_t +_DEFUN(iconv_open1, (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; + + 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); + } + + if (ic->data == NULL) + { + _free_r (rptr, (_VOID_PTR)ic); + return (iconv_t)-1; + } + + return (_VOID_PTR)ic; +} + +/* + * _iconv_nls_open - open iconv descriptors for NLS. + * + * PARAMETERS: + * struct _reent *rptr - process's reent structure; + * _CONST char *encoding - encoding name; + * iconv_t *tomb - wchar -> encoding iconv descriptor pointer; + * iconv_t *towc - encoding -> wchar iconv descriptor pointer; + * int flag - perform encoding name resolving flag. + * + * DESCRIPTION: + * Opens two iconv descriptors for 'encoding' -> wchar and + * wchar -> 'encoding' iconv conversions. Function is used when locale or + * wide-oriented stream is opened. If 'flag' is 0, don't perform encoding + * name resolving ('encoding' must not be alias in this case). + * + * RETURN: + * If successful - return 0, else set errno and return -1. + */ +int +_DEFUN(_iconv_nls_open, (rptr, encoding, towc, tomb), + struct _reent *rptr _AND + _CONST char *encoding _AND + iconv_t *tomb _AND + iconv_t *towc _AND + int flag) +{ + _CONST char *wchar_encoding; + + if (sizeof (wchar_t) > 2 && WCHAR_MAX > 0xFFFF) + wchar_encoding = "ucs_4_internal"; + else if (sizeof (wchar_t) > 1 && WCHAR_MAX > 0xFF) + wchar_encoding = "ucs_2_internal"; + else + wchar_encoding = ""; /* This shuldn't happen */ + + if (flag) + { + if ((*towc = _iconv_open_r (rptr, wchar_encoding, encoding)) == (iconv_t)-1) + return -1; + + if ((*tomb = _iconv_open_r (rptr, encoding, wchar_encoding)) == (iconv_t)-1) + { + _iconv_close_r (rptr, *towc); + return -1; + } + } + else + { + if ((*towc = iconv_open1 (rptr, wchar_encoding, encoding)) == (iconv_t)-1) + return -1; + + if ((*tomb = iconv_open1 (rptr, encoding, wchar_encoding)) == (iconv_t)-1) + { + _iconv_close_r (rptr, *towc); + return -1; + } + } + + return 0; +} + +#endif /* _MB_CAPABLE */ + |