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|
//========================================================================
//
// locale.cxx
//
// Implementation of ISO C internationalisation (i18n) locales
//
//========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): jlarmour
// Contributors: jjohnstn
// Date: 2000-04-18
// Purpose:
// Description:
// Usage:
//
//####DESCRIPTIONEND####
//
//========================================================================
// CONFIGURATION
#include <pkgconf/libc_i18n.h> // Configuration header
// INCLUDES
#include <cyg/infra/cyg_type.h> // Common type definitions and support
#include <cyg/infra/cyg_trac.h> // Common tracing support
#include <cyg/infra/cyg_ass.h> // Common assertion support
#include <locale.h> // struct lconv
#include <string.h> // several string functions
#include <limits.h> // CHAR_MAX
#include "internal.h" // locale type definitions
// CONSTANTS
// define the "C" locale
static const Cyg_libc_locale_t
C_locale = {
(char *)"C",
{ (char *)".", (char *)"", (char *)"", (char *)"", (char *)"", (char *)"", (char *)"", (char *)"", (char *)"", (char *)"",
CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX,
CHAR_MAX, CHAR_MAX
},
1,
NULL,
NULL,
};
// define the "C-EUCJP" locale (C locale with Japanese EUCJP mb support)
#ifdef CYGFUN_LIBC_I18N_LOCALE_C_EUCJP
static const Cyg_libc_locale_t
C_EUCJP_locale = {
"C-EUCJP",
{ ".", "", "", "", "", "", "", "", "", "",
CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX,
CHAR_MAX, CHAR_MAX
},
2,
&__mbtowc_jp,
&__wctomb_jp,
};
#endif
// define the "C-SJIS" locale (C locale with Japanese SJIS mb support)
#ifdef CYGFUN_LIBC_I18N_LOCALE_C_SJIS
static const Cyg_libc_locale_t
C_SJIS_locale = {
"C-SJIS",
{ ".", "", "", "", "", "", "", "", "", "",
CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX,
CHAR_MAX, CHAR_MAX
},
2,
&__mbtowc_jp,
&__wctomb_jp,
};
#endif
// define the "C-JIS" locale (C locale with Japanese JIS mb support)
#ifdef CYGFUN_LIBC_I18N_LOCALE_C_JIS
static const Cyg_libc_locale_t
C_JIS_locale = {
"C-JIS",
{ ".", "", "", "", "", "", "", "", "", "",
CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX,
CHAR_MAX, CHAR_MAX
},
8,
&__mbtowc_jp,
&__wctomb_jp,
};
#endif
// only one locale now, but leave room for expansion
static const Cyg_libc_locale_t *all_locales[] = { &C_locale,
#ifdef CYGFUN_LIBC_I18N_LOCALE_C_EUCJP
&C_EUCJP_locale,
#endif
#ifdef CYGFUN_LIBC_I18N_LOCALE_C_SJIS
&C_SJIS_locale,
#endif
#ifdef CYGFUN_LIBC_I18N_LOCALE_C_JIS
&C_JIS_locale,
#endif
};
// GLOBALS
// the maximum size of a multibyte character including state info
#ifdef CYGINT_LIBC_I18N_MB_REQUIRED
int __mb_cur_max = 1;
#endif
// the current locales. Our default is the C locale
static const Cyg_libc_locale_t *current_collate_locale = &C_locale;
const Cyg_libc_locale_t *__current_ctype_locale = &C_locale;
static const Cyg_libc_locale_t *current_monetary_locale = &C_locale;
static const Cyg_libc_locale_t *current_numeric_locale = &C_locale;
static const Cyg_libc_locale_t *current_time_locale = &C_locale;
// FUNCTIONS
static const Cyg_libc_locale_t *
find_locale_data( const char *locale_str, cyg_ucount32 checklen )
{
CYG_REPORT_FUNCNAMETYPE( "find_locale_data", "returning %08x" );
CYG_REPORT_FUNCARG1( "locale_str=%s", locale_str );
const Cyg_libc_locale_t *temp_locale, *curr_locale=NULL;
cyg_ucount32 i;
// is it "" i.e. use the default?
if (*locale_str=='\0') {
curr_locale = &C_locale;
CYG_REPORT_RETVAL( curr_locale );
return curr_locale;
} // if
for (i=0; i<sizeof(all_locales)/sizeof(Cyg_libc_locale_t *); i++ ) {
temp_locale = all_locales[i];
if ( !strncmp(temp_locale->name, locale_str, checklen) )
curr_locale = temp_locale;
} // for
CYG_REPORT_RETVAL( curr_locale );
return curr_locale;
} // find_locale_data()
typedef int (*mbtowc_fn_type)(wchar_t *, const char *, size_t, int *);
// routine used to export mbtowc function to I/O routines
externC mbtowc_fn_type
__get_current_locale_mbtowc_fn ()
{
if (__current_ctype_locale->mbtowc_fn)
return __current_ctype_locale->mbtowc_fn;
return &__mbtowc_c;
}
externC char *
setlocale( int category, const char *locale )
{
CYG_REPORT_FUNCNAMETYPE("setlocale", "returning %08x");
CYG_REPORT_FUNCARG2( "category=%d, locale=%s", category, locale );
if (locale != NULL)
CYG_CHECK_DATA_PTR( locale, "locale pointer is invalid!" );
const char *str;
// special case if locale==NULL, return current locale name
if (locale==NULL) {
CYG_TRACE0( true, "Getting current locale value" );
switch (category) {
case LC_COLLATE:
str = current_collate_locale->name;
break;
case LC_CTYPE:
str = __current_ctype_locale->name;
break;
case LC_MONETARY:
str = current_monetary_locale->name;
break;
case LC_NUMERIC:
str = current_numeric_locale->name;
break;
case LC_TIME:
str = current_time_locale->name;
break;
case LC_ALL:
// create static string to give a constructed string back
// to the user. The size is the number of categories other
// than LC_ALL times the maximum name size, and add a constant
// for the delimiting octothorpes
static char my_str[ CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE*5+10 ];
strcpy( my_str, "#" );
strcat( my_str, current_collate_locale->name );
strcat( my_str, "#" );
strcat( my_str, __current_ctype_locale->name );
strcat( my_str, "#" );
strcat( my_str, current_monetary_locale->name );
strcat( my_str, "#" );
strcat( my_str, current_numeric_locale->name );
strcat( my_str, "#" );
strcat( my_str, current_time_locale->name );
strcat( my_str, "#" );
str = &my_str[0];
break;
default:
str=NULL;
CYG_FAIL("setlocale() passed bad category!" );
break;
} // switch
CYG_REPORT_RETVAL( (char *)str);
return (char *)str;
} // if
// we only get here if locale is non-NULL, i.e. we want to set it
const Cyg_libc_locale_t *loc;
cyg_bool default_locale = (*locale=='\0');
CYG_TRACE0( true, "Setting current locale value" );
switch( category ) {
case LC_COLLATE:
loc = find_locale_data( locale, CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE );
if (loc != NULL) // found it
current_collate_locale=loc;
break;
case LC_CTYPE:
loc = find_locale_data( locale, CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE );
if (loc != NULL) // found it
{
__current_ctype_locale=loc;
#ifdef CYGINT_LIBC_I18N_MB_REQUIRED
__mb_cur_max = loc->mb_cur_max;
#endif
}
break;
case LC_MONETARY:
loc = find_locale_data( locale, CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE );
if (loc != NULL) // found it
current_monetary_locale=loc;
break;
case LC_NUMERIC:
loc = find_locale_data( locale, CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE );
if (loc != NULL) // found it
current_numeric_locale=loc;
break;
case LC_TIME:
loc = find_locale_data( locale, CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE );
if (loc != NULL) // found it
current_time_locale=loc;
break;
case LC_ALL:
// first try and match it exactly
loc = find_locale_data( locale, CYGNUM_LIBC_I18N_MAX_LOCALE_NAME_SIZE );
if (loc != NULL) { // found it
CYG_TRACE0(true, "Matched locale string exactly");
current_collate_locale = __current_ctype_locale = loc;
current_monetary_locale = current_numeric_locale = loc;
current_time_locale = loc;
#ifdef CYGINT_LIBC_I18N_MB_REQUIRED
__mb_cur_max = loc->mb_cur_max;
#endif
} // if
else {
CYG_TRACE0( true, "Attempting to parse string previously "
"returned from setlocale()" );
// now try and see if it is a compound string returned
// earlier by setlocale( LC_ALL, NULL );
// Note we don't do much checking here. This could be
// much more rigorous (but at the expense of speed/size?)
const Cyg_libc_locale_t *temp_collate_locale,
*temp_ctype_locale, *temp_monetary_locale,
*temp_numeric_locale, *temp_time_locale;
cyg_ucount32 token_len;
str = &locale[0];
if ( *str=='#' ) {
++str;
token_len = strcspn( str, "#" );
loc = find_locale_data( str, token_len );
if (loc!=NULL) {
temp_collate_locale=loc;
str += token_len+1;
token_len = strcspn( str, "#" );
loc = find_locale_data( str, token_len );
if (loc!=NULL) {
temp_ctype_locale=loc;
str += token_len+1;
token_len = strcspn( str, "#" );
loc = find_locale_data( str, token_len );
if (loc!=NULL) {
temp_monetary_locale=loc;
str += token_len+1;
token_len = strcspn( str, "#" );
loc = find_locale_data( str, token_len );
if (loc!=NULL) {
temp_numeric_locale=loc;
str += token_len+1;
token_len = strcspn( str, "#" );
loc = find_locale_data( str, token_len );
if (loc!=NULL) {
temp_time_locale=loc;
str += token_len+1;
token_len = strcspn( str, "#" );
loc = find_locale_data( str, token_len );
if (loc!=NULL) {
// if we've got this far and loc still isn't NULL,
// then everything's fine, and we've matched everything
current_collate_locale = temp_collate_locale;
__current_ctype_locale = temp_ctype_locale;
#ifdef CYGINT_LIBC_I18N_MB_REQUIRED
__mb_cur_max = temp_ctype_locale->mb_cur_max;
#endif
current_monetary_locale = temp_monetary_locale;
current_numeric_locale = temp_numeric_locale;
current_time_locale = temp_time_locale;
} // if
} // if
} // if
} // if
} // if
} // if
} // if
} // else
break; // case LC_ALL
default:
CYG_FAIL("setlocale() passed bad category!" );
loc=NULL;
break;
} // switch
if (loc==NULL) {
CYG_REPORT_RETVAL( NULL );
return NULL;
} // if
else if (default_locale==true) {
CYG_REPORT_RETVAL(C_locale.name);
return (char *)C_locale.name;
} // else if
else {
CYG_REPORT_RETVAL(locale);
return (char *)locale;
} // else
} // setlocale()
externC struct lconv *
localeconv( void )
{
CYG_REPORT_FUNCNAMETYPE( "localeconv", "returning %08x" );
CYG_REPORT_FUNCARGVOID();
static struct lconv static_lconv;
static_lconv.decimal_point =
current_numeric_locale->numdata.decimal_point;
static_lconv.thousands_sep =
current_numeric_locale->numdata.thousands_sep;
static_lconv.grouping =
current_numeric_locale->numdata.grouping;
// we cheat a bit, but it should be worth it - a lot of these are
// constants which optimise nicely
cyg_ucount32 size_used;
size_used = (char *)&static_lconv.int_curr_symbol -
(char *)&static_lconv;
memcpy( &(static_lconv.int_curr_symbol),
&(current_monetary_locale->numdata.int_curr_symbol),
sizeof(struct lconv) - size_used );
CYG_REPORT_RETVAL( &static_lconv );
return &static_lconv;
} // localeconv()
// EOF locale.cxx
|
