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+.\" $Xorg: Framework.ms,v 1.3 2000/08/17 19:42:49 cpqbld Exp $
+.\" $XdotOrg: xc/doc/specs/i18n/Framework.ms,v 1.2 2004/04/23 18:42:19 eich Exp $
+.\" To print this out, type tbl macros.t ThisFile | troff -ms
+.\" $XFree86: xc/doc/specs/i18n/Framework.ms,v 1.4 2001/01/17 16:57:45 dawes Exp $
+.EH ''''
+.OH ''''
+.EF ''''
+.OF ''''
+.ps 11
+.nr PS 11
+\&
+.TL
+\s+3\fBX11R6 Sample Implementation Frame Work\fP\s-3
+.sp 2
+.AU
+Katsuhisa Yano
+.AI
+TOSHIBA Corporation
+.AU
+Yoshio Horiuchi
+.AI
+IBM Japan
+.LP
+.bp
+.br
+\&
+.sp 15
+.ps 9
+.nr PS 9
+.LP
+Copyright \(co 1994 by TOSHIBA Corporation
+.br
+Copyright \(co 1994 by IBM Corporation
+.LP
+Permission to use, copy, modify, and distribute this documentation
+for any purpose and without fee is hereby granted, provided
+that the above copyright notice and this permission notice appear 
+in all copies.
+TOSHIBA Corporation and IBM Corporation make no representations about 
+the suitability for any purpose of the information in this document.
+This documentation is provided as is without express or implied warranty.
+.sp 5
+Copyright \(co 1994 X Consortium
+.LP
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the ``Software''), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+.LP
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+.LP
+THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+.LP
+Except as contained in this notice, the name of the X Consortium shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the X Consortium.
+.sp 3
+\fIX Window System\fP is a trademark of The Open Group.
+.ps 11
+.nr PS 11
+.bp 1
+.EH '\fBSample Implementation Frame Work\fP''\fB\*(xV\fP'
+.OH '\fBSample Implementation Frame Work\fP''\fB\*(xV\fP'
+.EF ''\fB % \fP''
+.OF ''\fB % \fP''
+.NH 1
+Preface 
+.XS \*(SN Preface 
+.XE 
+.LP 
+This document proposes to define the structures, methods and their 
+signatures that are expected to be common to all locale dependent 
+functions within the Xlib sample implementation.  The following 
+illustration (Fig.1) is proposed to outline the separating of 
+the components within the sample implementation.  
+.LP
+.\" figure start
+.in +1c
+\^... 0.237 5.796 5.24 10.14
+\^... 0.000i 4.344i 5.003i 0.000i
+.nr 00 \n(.u
+.nf
+.PS 4.344i 5.003i 
+.br
+.ps 11
+\h'1.753i'\v'2.130i'\v'-.13m'\L'-1.000i\(br'\v'.13m'
+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
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+.sp -1
+\v'0.782i'\h'-0.0m'\v'0.2m'\s12\fR<<  ANSI/MSE API >>\fP
+.sp -1
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+.sp -1
+\h'3.900i'\v'0.528i'\D'l-0.025i 0.100i'
+.sp -1
+\v'4.002i'\D'l0.125i 0.125i'
+.sp -1
+\h'0.125i'\v'4.127i'\l'3.000i'
+.sp -1
+\h'3.125i'\v'4.127i'\D'l0.125i -0.125i'
+.sp -1
+\h'3.500i'\v'4.002i'\D'l0.125i 0.125i'
+.sp -1
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+.sp -1
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+.sp -1
+\h'1.626i'\v'4.344i'\h'-0.0m'\v'0.2m'\h'-\w'\s12\fRXLocale Source (X Core)\fP'u/2u'\s12\fRXLocale Source (X Core)\fP\h'-\w'\s12\fRXLocale Source (X Core)\fP'u/2u'
+.sp -1
+\h'4.250i'\v'4.344i'\h'-0.0m'\v'0.2m'\h'-\w'\s12\fRSystem LOcale Source\fP'u/2u'\s12\fRSystem LOcale Source\fP\h'-\w'\s12\fRSystem LOcale Source\fP'u/2u'
+.sp -1
+\h'2.500i'\v'0.782i'\h'-0.0m'\v'0.2m'\h'-\w'\s12\fRXLib API\fP'u/2u'\s12\fRXLib API\fP\h'-\w'\s12\fRXLib API\fP'u/2u'
+.sp -1
+\h'2.500i'\v'0.969i'\h'-0.0m'\v'0.2m'\h'-\w'\s12\fR(X Core)\fP'u/2u'\s12\fR(X Core)\fP\h'-\w'\s12\fR(X Core)\fP'u/2u'
+.sp -1
+\h'1.751i'\v'0.782i'\h'-0.0m'\v'0.2m'\s12\fR<<\fP
+.sp -1
+\h'3.063i'\v'0.782i'\h'-0.0m'\v'0.2m'\s12\fR>>\fP
+.sp -1
+.sp 1+4.344i
+.in -1c
+.PE
+.if \n(00 .fi
+.\" figure end
+.LP
+.ce
+.sp 6p
+Fig.1 : Frame Work of Locale Service API Proposal
+.LP
+Generally speaking, the internationalized portion of Xlib (Locale
+Dependent X, LDX) consists of three objects;
+locale (LC) , input method (IM) and output method (OM).
+The LC provides a set of information that depends on user's language
+environment.  The IM manages text inputing, and the OM manages text
+drawing.  Both IM and OM highly depend on LC data.
+.LP
+In X11R5, there are two sample implementations, Ximp and Xsi, for
+Xlib internationalization.  But in both implementations, IM and OM
+actually refer the private extension of LC.  It breaks coexistence 
+of these two sample implementations.  For example, if a user creates 
+a new OM for special purpose as a part of Ximp, it will not work with 
+Xsi.
+.LP
+As a solution of this problem, we propose to define the standard
+APIs between these three objects, and define the structure that are
+common to these objects.
+.LP
+.NH 1
+Objective
+.XS \*(SN Objective
+.XE 
+.LP 
+.IP \(bu
+Explain the current X11R6 sample implementation
+.IP \(bu
+Document the common set of locale dependent interfaces
+.IP \(bu
+Provide more flexible pluggable layer
+.LP
+.NH 1
+Locale Object Binding Functions
+.XS \*(SN Locale Object Binding Functions
+.XE 
+.LP 
+This chapter describes functions related locale object binding for
+implementing the pluggable layer.
+.LP
+A locale loader is an entry point for locale object, which
+instantiates XLCd object and binds locale methods with specified
+locale name. The behavior of loader is implementation dependent.
+And, what kind of loaders are available is also implementation
+dependent.
+.LP
+The loader is called in 
+.PN _XOpenLC, 
+but caller of 
+.PN _XOpenLC 
+does not need to care about its inside.  For example, if the loader is
+implemented with dynamic load functions, and the dynamic module is
+expected to be unloaded when the corresponding XLCd is freed,
+close methods of XLCdMethods should handle unloading.
+.LP
+.sp
+\fBInitializing a locale loader list\fP
+.LP
+.FD 0
+void _XlcInitLoader()
+.FN
+The 
+.PN _XlcInitLoader
+function initializes the locale loader list with vendor specific 
+manner.  Each loader is registered with calling
+.PN _XlcAddLoader.
+The number of loaders and their order in the loader list is
+implementation dependent.
+.sp
+.LP
+\fBAdd a loader\fP
+.LP
+.Ds 0
+.TA .5i 2.5i
+.ta .5i 2.5i
+typedef XLCd (*XLCdLoadProc)(\fIname\fP);
+      char \fI*name\fP;
+
+typedef int XlcPosition;
+.De
+.TS
+lw(.5i) lw(2i) lw(2i).
+T{
+#define
+T}	T{
+XlcHead
+T}	T{
+ 0
+T}
+T{
+#define
+T}	T{
+XlcTail
+T}	T{
+-1
+T}
+.TE
+.LP
+.FD 0
+Bool _XlcAddLoader(\fIproc, position\fP)
+.br
+      XLCdLoadProc \fIproc\fP;
+.br
+      XlcPosition \fIposition\fP;
+.FN
+.LP
+The 
+.PN _XlcAddLoader
+function registers the specified locale loader ``\fIproc\fP'' to the 
+internal loader list.  The position specifies that the loader 
+``\fIproc\fP'' should be placed in the top of the loader list(XlcHead) 
+or last(XlcTail).
+.LP
+The object loader is called from the top of the loader list in order,
+when calling time.
+.sp
+.LP
+\fBRemove a loader\fP
+.LP
+.FD 0
+void _XlcRemoveLoader(\fIproc\fP)
+.br
+      XLCdLoadProc \fIproc\fP;
+.FN
+.LP
+The 
+.PN _XlcRemoveLoader
+function removes the locale loader specified by ``\fIproc\fP'' from the 
+loader list.
+.LP
+Current implementation provides following locale loaders;
+.DS
+.PN _XlcDefaultLoader
+.PN _XlcGenericLoader
+.PN _XlcEucLoader
+.PN _XlcSjisLoader
+.PN _XlcUtfLoader
+.PN _XaixOsDynamicLoad
+.DE
+.LP
+.NH 1
+Locale Method Interface
+.XS \*(SN Locale Method Interface
+.XE 
+.LP 
+This chapter describes the locale method API, which is a set of 
+accessible functions from both IM and OM parts.
+The locale method API provides the functionalities;  obtaining locale
+dependent information, handling charset, converting text, etc.
+.LP
+As a result of using these APIs instead of accessing vender private
+extension of the locale object, we can keep locale, IM and OM
+independently each other.
+.LP
+.NH 1
+Locale Method Functions
+.XS \*(SN Locale Method Functions
+.XE 
+.LP 
+\fBOpen a Locale Method\fP
+.LP
+.FD 0
+XLCd _XOpenLC(\fIname\fP)
+.br
+      char \fI*name\fP;
+.FN
+.LP
+The 
+.PN _XOpenLC
+function opens a locale method which corresponds to the
+specified locale name.  
+.PN _XOpenLC
+calls a locale object loader, which is registered via 
+.PN _XlcAddLoader into the internal loader list.  If the called loader 
+is valid and successfully opens a locale, 
+.PN _XOpenLC
+returns the XLCd.  If the loader is invalid or failed to open a locale,
+.PN _XOpenLC
+calls the next loader.  If all registered loaders cannot open a locale, 
+.PN _XOpenLC
+returns NULL.
+.LP
+.FD 0
+XLCd _XlcCurrentLC()
+.FN
+.LP
+The 
+.PN _XlcCurrentLC
+function returns an XLCd that are bound to current locale.
+.sp
+.LP
+\fBClose a Locale Method\fP
+.LP
+.FD 0
+void _XCloseLC(\fIlcd\fP)
+.br
+      XLCd \fIlcd\fP;
+.FN
+.LP
+The 
+.PN _XCloseLC
+function close a locale method the specified lcd.
+.sp
+.LP
+\fBObtain Locale Method values\fP
+.LP
+.FD 0
+char * _XGetLCValues(\fIlcd\fP, ...)
+.br
+      XLCd \fIlcd\fP;
+.FN
+.LP
+The 
+.PN _XGetLCValues
+function returns NULL if no error occurred; otherwise, it returns the 
+name of the first argument that could not be obtained.
+The following values are defined as standard arguments. Other values
+are implementation dependent.
+.LP
+.TS H
+tab(:);
+l l l.
+_
+.sp 6p
+.B
+Name:Type:Description
+.sp 6p
+_
+.sp 6p
+.TH
+.R
+XlcNCodeset:char*:codeset part of locale name
+XlcNDefaultString:char*:XDefaultString()
+XlcNEncodingName:char*:encoding name
+XlcNLanguage:char*:language part of locale name
+XlcNMbCurMax:int:ANSI C MB_CUR_MAX
+XlcNStateDependentEncoding:Bool:is state-dependent encoding or not
+XlcNTerritory:char*:territory part of locale name
+.sp 6p
+_
+.TE
+.LP
+.NH 1
+Charset functions
+.XS \*(SN 
+Charset functions
+.XE 
+.LP 
+The XlcCharSet is an identifier which represents a subset of characters
+(character set) in the locale object. 
+.LP
+.Ds 0
+.TA .5i 2.5i
+.ta .5i 2.5i
+typedef enum {
+      XlcUnknown, XlcC0, XlcGL, XlcC1, XlcGR, XlcGLGR, XlcOther
+} XlcSide;
+
+typedef struct _XlcCharSetRec *XlcCharSet;
+
+typedef struct {
+      char *name;
+      XPointer value;
+} XlcArg, *XlcArgList;
+
+typedef char* (*XlcGetCSValuesProc)(\fIcharset\fP, \fIargs\fP, \fInum_args\fP);
+      XlcCharSet \fIcharset\fP;
+      XlcArgList \fIargs\fP;
+      int \fInum_args\fP;
+
+typedef struct _XlcCharSetRec {
+      char *name;
+      XrmQuark xrm_name;
+      char *encoding_name;
+      XrmQuark xrm_encoding_name;
+      XlcSide side;
+      int char_size;
+      int set_size;
+      char *ct_sequence; 
+      XlcGetCSValuesProc get_values;
+} XlcCharSetRec;
+.De
+.sp
+.LP
+\fBGet an XlcCharSet\fP
+.LP
+.FD 0
+XlcCharSet _XlcGetCharSet(\fIname\fP)
+.br
+      char \fI*name\fP;
+.FN
+.LP
+The 
+.PN _XlcGetCharSet
+function gets an XlcCharSet which corresponds to the charset name 
+specified by ``\fIname\fP''.  
+.PN _XlcGetCharSet 
+returns NULL, if no XlcCharSet bound to specified ``\fIname\fP''.
+.LP
+The following character sets are pre-registered.
+.LP
+.TS H
+tab(@);
+l l.
+_
+.sp 6p
+.B
+Name@Description
+.sp 6p
+_
+.sp 6p
+.TH
+.R
+ISO8859-1:GL@7-bit ASCII graphics (ANSI X3.4-1968),
+@Left half of ISO 8859 sets
+JISX0201.1976-0:GL@Left half of JIS X0201-1976 (reaffirmed 1984),
+@8-Bit Alphanumeric-Katakana Code
+.sp
+ISO8859-1:GR@Right half of ISO 8859-1, Latin alphabet No. 1
+ISO8859-2:GR@Right half of ISO 8859-2, Latin alphabet No. 2
+ISO8859-3:GR@Right half of ISO 8859-3, Latin alphabet No. 3
+ISO8859-4:GR@Right half of ISO 8859-4, Latin alphabet No. 4
+ISO8859-7:GR@Right half of ISO 8859-7, Latin/Greek alphabet
+ISO8859-6:GR@Right half of ISO 8859-6, Latin/Arabic alphabet
+ISO8859-8:GR@Right half of ISO 8859-8, Latin/Hebrew alphabet
+ISO8859-5:GR@Right half of ISO 8859-5, Latin/Cyrillic alphabet
+ISO8859-9:GR@Right half of ISO 8859-9, Latin alphabet No. 5
+JISX0201.1976-0:GR@Right half of JIS X0201-1976 (reaffirmed 1984),
+@8-Bit Alphanumeric-Katakana Code
+.sp
+GB2312.1980-0:GL@GB2312-1980, China (PRC) Hanzi defined as GL
+GB2312.1980-0:GR@GB2312-1980, China (PRC) Hanzi defined as GR
+JISX0208.1983-0:GL@JIS X0208-1983, Japanese Graphic Character Set
+@defined as GL
+JISX0208.1983-0:GR@JIS X0208-1983, Japanese Graphic Character Set
+@defined as GR
+KSC5601.1987-0:GL@KS C5601-1987, Korean Graphic Character Set
+@defined as GL
+KSC5601.1987-0:GR@KS C5601-1987, Korean Graphic Character Set
+@defined as GR
+JISX0212.1990-0:GL@JIS X0212-1990, Japanese Graphic Character Set
+@defined as GL
+JISX0212.1990-0:GR@JIS X0212-1990, Japanese Graphic Character Set
+@defined as GR
+.\" CNS11643.1986-0:GL
+.\" CNS11643.1986-1:GL
+.\" TIS620-0:GR
+.sp 6p
+_
+.TE
+.LP
+.sp
+\fBAdd an XlcCharSet\fP
+.LP
+.FD 0
+Bool _XlcAddCharSet(\fIcharset\fP)
+      XlcCharSet \fIcharset\fP;
+.FN
+.LP
+The 
+.PN _XlcAddCharSet
+function registers XlcCharSet specified by ``\fIcharset\fP''.
+.LP
+.sp
+\fBObtain Character Set values\fP
+.LP
+.FD 0
+char * _XlcGetCSValues(\fIcharset\fP, ...)
+.br
+      XlcCharSet \fIcharset\fP;
+.FN
+.LP
+The 
+.PN _XlcGetCSValues
+function returns NULL if no error occurred; 
+otherwise, it returns the name of the first argument that could not 
+be obtained.  The following values are defined as standard arguments. 
+Other values are implementation dependent.
+.LP
+.TS H
+tab(:);
+l l l.
+_
+.sp 6p
+.B
+Name:Type:Description
+.sp 6p
+_
+.sp 6p
+.TH
+.R
+XlcNName:char*:charset name
+XlcNEncodingName:char*:XLFD CharSet Registry and Encoding
+XlcNSide:XlcSide:charset side (GL, GR, ...)
+XlcNCharSize:int:number of octets per character
+XlcNSetSize:int:number of character sets
+XlcNControlSequence:char*:control sequence of Compound Text
+.sp 6p
+_
+.TE
+.LP
+.NH 1
+Converter Functions
+.XS \*(SN Converter Functions
+.XE 
+.LP 
+We provide a set of the common converter APIs, that are independent 
+from both of source and destination text type.
+.LP
+.Ds 0
+.TA .5i 2.5i
+.ta .5i 2.5i
+typedef struct _XlcConvRec *XlcConv;
+
+typedef void (*XlcCloseConverterProc)(\fIconv\fP);
+      XlcConv \fIconv\fP;
+
+typedef int (*XlcConvertProc)(\fIconv\fP, \fIfrom\fP, \fIfrom_left\fP, \fIto\fP, \fIto_left\fP, \fIargs\fP, \fInum_args\fP);
+      XlcConv \fIconv\fP;
+      XPointer \fI*from\fP;
+      int \fI*from_left\fP;
+      XPointer \fI*to\fP;
+      int \fI*to_left\fP;
+      XPointer \fI*args\fP;
+      int \fInum_args\fP;
+
+typedef void (*XlcResetConverterProc)(\fIconv\fP);
+      XlcConv \fIconv\fP;
+
+typedef struct _XlcConvMethodsRec {
+      XlcCloseConverterProc close;
+      XlcConvertProc convert;
+      XlcResetConverterProc reset;
+} XlcConvMethodsRec, *XlcConvMethods;
+
+typedef struct _XlcConvRec {
+    XlcConvMethods methods;
+    XPointer state;
+} XlcConvRec;
+.De
+.LP
+.sp
+\fBOpen a converter\fP
+.LP
+.FD 0
+XlcConv _XlcOpenConverter(\fIfrom_lcd\fP, \fIfrom_type\fP, \fIto_lcd\fP, \fIto_type\fP)
+.br
+      XLCd \fIfrom_lcd\fP;
+.br
+      char \fI*from_type\fP;
+.br
+      XLCd \fIto_lcd\fP;
+.br
+      char \fI*to_type\fP;
+.FN
+.LP
+.PN _XlcOpenConverter 
+function opens the converter which converts a text from specified 
+``\fIfrom_type\fP'' to specified ``\fIto_type\fP'' encoding.  If the 
+function cannot find proper converter or cannot open a corresponding 
+converter, it returns NULL.  Otherwise, it returns the conversion 
+descriptor.
+.LP
+The following types are pre-defined. Other types are implementation
+dependent.
+.LP
+.TS H
+tab(:);
+l l l l.
+_
+.sp 6p
+.B
+Name:Type:Description:Arguments
+.sp 6p
+_
+.sp 6p
+.TH
+.R
+XlcNMultiByte:char *:multibyte:-
+XlcNWideChar:wchar_t *:wide character:-
+XlcNCompoundText:char *:COMPOUND_TEXT:-
+XlcNString:char *:STRING:-
+XlcNCharSet:char *:per charset:XlcCharSet
+XlcNChar:char *:per character:XlcCharSet
+.sp 6p
+_
+.TE
+.LP
+.sp
+\fBClose a converter\fP
+.LP
+.FD 0
+void _XlcCloseConverter(\fIconv\fP)
+.br
+      XlcConv \fIconv\fP;
+.FN
+.LP
+The 
+.PN _XlcCloseConverter
+function closes the specified converter ``\fIconv\fP''.
+.LP
+.sp
+\fBCode conversion\fP
+.LP
+.FD 0
+int _XlcConvert(\fIconv\fP, \fIfrom\fP, \fIfrom_left\fP, \fIto\fP, \fIto_left\fP, \fIargs\fP, \fInum_args\fP)
+.br
+      XlcConv \fIconv\fP;
+.br
+      XPointer \fI*from\fP;
+.br
+      int \fI*from_left\fP;
+.br
+      XPointer \fI*to\fP;
+.br
+      int \fI*to_left\fP;
+.br
+      XPointer \fI*args\fP;
+.br
+      int \fInum_args\fP;
+.FN
+.LP
+The 
+.PN _XlcConvert
+function converts a sequence of characters from one type, in the array 
+specified by ``\fIfrom\fP'', into a sequence of corresponding characters 
+in another type, in the array specified by ``\fIto\fP''.  The types are 
+those specified in the 
+.PN _XlcOpenConverter() 
+call that returned the conversion descriptor, ``\fIconv\fP''.
+The arguments ``\fIfrom\fP'', ``\fIfrom_left\fP'', ``\fIto\fP'' and 
+``\fIto_left\fP'' have the same specification of XPG4 iconv function.
+.LP
+For state-dependent encodings, the conversion descriptor ``\fIconv\fP''
+is placed into its initial shift state by a call for which ``\fIfrom\fP'' 
+is a NULL pointer, or for which ``\fIfrom\fP'' points to a null pointer.
+.LP
+The following 2 converters prepared by locale returns appropriate 
+charset (XlcCharSet) in an area pointed by args[0].
+.LP
+.TS
+tab(:);
+l l l.
+_
+.sp 6p
+.B
+From:To:Description
+.sp 6p
+_
+.sp 6p
+.R
+XlcNMultiByte:XlcNCharSet:Segmentation (Decomposing)
+XlcNWideChar:XlcNCharSet:Segmentation (Decomposing)
+.sp 6p
+_
+.TE
+.LP
+The conversion, from XlcNMultiByte/XlcNWideChar to XlcNCharSet,
+extracts a segment which has same charset encoding characters.
+More than one segment cannot be converted in a call.
+.LP
+.sp
+\fBReset a converter\fP
+.LP
+.FD 0
+void _XlcResetConverter(\fIconv\fP)
+.br
+      XlcConv \fIconv\fP;
+.FN
+.LP
+The 
+.PN _XlcResetConverter 
+function reset the specified converter ``\fIconv\fP''.
+.LP
+.sp
+\fBRegister a converter\fP
+.LP
+.Ds 0
+.TA .5i 2.5i
+.ta .5i 2.5i
+typedef XlcConv (*XlcOpenConverterProc)(\fIfrom_lcd\fP, \fIfrom_type\fP, \fIto_lcd\fP, \fIto_type\fP);
+      XLCd \fIfrom_lcd\fP;
+      char \fI*from_type\fP;
+      XLCd \fIto_lcd\fP;
+      char \fI*to_type\fP;
+.De
+.LP
+.FD 0
+Bool _XlcSetConverter(\fIfrom_lcd\fP, \fIfrom\fP, \fIto_lcd\fP, \fIto\fP, \fIconverter\fP)
+.br
+      XLCd \fIfrom_lcd\fP;
+.br
+      char \fI*from\fP;
+.br
+      XLCd \fIto_lcd\fP;
+.br
+      char \fI*to\fP;
+.br
+      XlcOpenConverterProc \fIconverter\fP;
+.FN
+.LP
+The \fBXlcSetConverter\fP function registers a converter which convert 
+from ``\fIfrom_type\fP'' to ``\fIto_type\fP'' into the converter list 
+(in the specified XLCd).
+.LP
+.NH 1
+X Locale Database functions
+.XS \*(SN X Locale Database functions
+.XE 
+.LP 
+X Locale Database contains the subset of user's environment that
+depends on language.  The following APIs are provided for accessing
+X Locale Database and other locale relative files.
+.LP
+For more detail about  X Locale Database, please refer
+X Locale Database Definition document.
+.LP
+.sp
+\fBGet a resource from database\fP
+.LP
+.FD 0
+void _XlcGetResource(\fIlcd\fP, \fIcategory\fP, \fIclass\fP, \fIvalue\fP, \fIcount\fP)
+.br
+      XLCd \fIlcd\fP;
+.br
+      char \fI*category\fP;
+.br
+      char \fI*class\fP;
+.br
+      char \fI***value\fP;
+.br
+      int \fI*count\fP;
+.FN
+.LP
+The 
+.PN _XlcGetResource
+function obtains a locale dependent data which is associated with the 
+locale of specified ``\fIlcd\fP''.
+The locale data is provided by system locale or by X Locale Database 
+file, and what kind of data is available is implementation dependent.
+.LP
+The specified ``\fIcategory\fP'' and ``\fIclass\fP'' are used for 
+finding out the objective locale data.
+.LP
+The returned  value is returned in value argument in string list form,
+and the returned count shows the number of strings in the value.
+.LP
+The returned value is owned by locale method, and should not be modified 
+or freed by caller.
+.LP
+.sp
+\fBGet a locale relative file name\fP
+.LP
+.FD 0
+char * _XlcFileName(\fIlcd\fP, \fIcategory\fP)
+.br
+      XLCd \fIlcd\fP;
+.br
+      char \fI*category\fP;
+.FN
+.LP
+The 
+.PN _XlcFileName 
+functions returns a file name which is bound to the specified ``\fIlcd\fP'' 
+and ``\fIcategory\fP'', as a null-terminated string.  If no file name can 
+be found, or there is no readable file for the found file name, 
+.PN _XlcFileName
+returns NULL.  The returned file name should be freed by caller.
+.LP
+The rule for searching a file name is implementation dependent.
+In current implementation, 
+.PN _XlcFileName 
+uses ``{category}.dir'' file as mapping table, which has pairs of 
+strings, a full locale name and a corresponding file name.
+.LP
+.NH 1
+Utility Functions
+.XS \*(SN Utility Functions
+.XE 
+.LP 
+\fBCompare Latin-1 strings\fP
+.LP
+.FD 0
+int _XlcCompareISOLatin1(\fIstr1\fP, \fIstr2\fP)
+.br
+      char \fI*str1\fP, \fI*str2\fP;
+.FN
+.FD 0
+int _XlcNCompareISOLatin1(\fIstr1\fP, \fIstr2\fP, \fIlen\fP)
+.br
+      char \fI*str1\fP, \fI*str2\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _XlcCompareIsoLatin1 
+function to compares two ISO-8859-1 strings.  Bytes representing ASCII lower 
+case letters are converted to upper case before making the comparison.  
+The value returned is an integer less than, equal to, or greater than 
+zero, depending on whether ``\fIstr1\fP'' is lexicographicly less than, 
+equal to, or greater than ``\fIstr2\fP''.
+.LP 
+The 
+.PN _XlcNCompareIsoLatin1
+function is identical to 
+.PN _XlcCompareISOLatin1,
+except that at most ``\fIlen\fP'' bytes are compared.
+.LP
+.sp
+\fBResource Utility\fP
+.LP
+.FD 0
+int XlcNumber(\fIarray\fP)
+      ArrayType \fIarray\fP;
+.FN
+.LP
+Similar to XtNumber.
+.LP
+.FD 0
+void _XlcCopyFromArg(\fIsrc\fP, \fIdst\fP, \fIsize\fP)
+.br
+      char \fI*src\fP;
+.br
+      char \fI*dst\fP;
+.br
+      int \fIsize\fP;
+.FN
+.FD 0
+void _XlcCopyToArg(\fIsrc\fP, \fIdst\fP, \fIsize\fP)
+.br
+      char \fI*src\fP;
+.br
+      char \fI**dst\fP;
+.br
+      int \fIsize\fP;
+.FN
+.LP
+Similar to 
+.PN _XtCopyFromArg 
+and 
+.PN _XtCopyToArg.
+.LP
+.FD 0
+void _XlcCountVaList(\fIvar\fP, \fIcount_ret\fP)
+.br
+      va_list \fIvar\fP;
+.br
+      int \fI*count_ret\fP;
+.FN
+.LP
+Similar to 
+.PN _XtCountVaList.
+.LP
+.FD 0
+void _XlcVaToArgList(\fIvar\fP, \fIcount\fP, \fIargs_ret\fP)
+.br
+      va_list \fIvar\fP;
+.br
+      int \fIcount\fP;
+.br
+      XlcArgList \fI*args_ret\fP;
+.FN
+.LP
+Similar to 
+.PN _XtVaToArgList.
+.LP
+.Ds 0
+.TA .5i 2.5i
+.ta .5i 2.5i
+typedef struct _XlcResource {
+      char *name;
+      XrmQuark xrm_name;
+      int size;
+      int offset;
+      unsigned long mask;
+} XlcResource, *XlcResourceList;
+.De
+.LP
+.TS
+lw(.5i) lw(2i) lw(2i).
+T{
+#define
+T}	T{
+XlcCreateMask
+T}	T{
+(1L<<0)
+T}
+T{
+#define
+T}	T{
+XlcDefaultMask
+T}	T{
+(1L<<1)
+T}
+T{
+#define
+T}	T{
+XlcGetMask
+T}	T{
+(1L<<2)
+T}
+T{
+#define
+T}	T{
+XlcSetMask
+T}	T{
+(1L<<3)
+T}
+T{
+#define
+T}	T{
+XlcIgnoreMask
+T}	T{
+(1L<<4)
+T}
+.TE
+.LP
+.FD 0
+void _XlcCompileResourceList(\fIresources\fP, \fInum_resources\fP)
+.br
+      XlcResourceList \fIresources\fP;
+.br
+      int \fInum_resources\fP;
+.FN
+.LP
+Similar to 
+.PN _XtCompileResourceList.
+.LP
+.FD 0
+char * _XlcGetValues(\fIbase\fP, \fIresources\fP, \fInum_resources\fP, \fIargs\fP, \fInum_args\fP, \fImask\fP)
+.br
+      XPointer \fIbase\fP;
+.br
+      XlcResourceList \fIresources\fP;
+.br
+      int \fInum_resources\fP;
+.br
+      XlcArgList \fIargs\fP;
+.br
+      int \fInum_args\fP;
+.br
+      unsigned long \fImask\fP;
+.FN
+.LP
+Similar to XtGetSubvalues.
+.LP
+.FD 0
+char * _XlcSetValues(\fIbase\fP, \fIresources\fP, \fInum_resources\fP, \fIargs\fP, \fInum_args\fP, \fImask\fP)
+.br
+      XPointer \fIbase\fP;
+.br
+      XlcResourceList \fIresources\fP;
+.br
+      int \fInum_resources\fP;
+.br
+      XlcArgList \fIargs\fP;
+.br
+      int \fInum_args\fP;
+.br
+      unsigned long \fImask\fP;
+.FN
+.LP
+Similar to XtSetSubvalues.
+.LP
+.sp
+\fBANSI C Compatible Functions\fP
+.LP
+The following are ANSI C/MSE Compatible Functions for non-ANSI C environment.
+.LP
+.FD 0
+int _Xmblen(\fIstr\fP, \fIlen\fP)
+.br
+      char \fI*str\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xmblen 
+function returns the number of characters pointed to by ``\fIstr\fP''.  
+Only ``\fIlen\fP'' bytes in ``\fIstr\fP'' are used in determining the 
+character count returned.  ``\fIStr\fP'' may point at characters from 
+any valid codeset in the current locale.
+.LP 
+The call 
+.PN _Xmblen
+is equivalent to
+.RS
+_Xmbtowc(_Xmbtowc((\fIwchar_t*\fP)NULL, \fIstr\fP, \fIlen\fP))
+.RE
+.LP
+.FD 0
+int _Xmbtowc(\fIwstr\fP, \fIstr\fP, \fIlen\fP)
+.br
+      wchar_t \fI*wstr\fP;
+.br
+      char \fI*str\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xmbtowc
+function converts the character(s) pointed to by ``\fIstr\fP'' 
+to their wide character representation(s) pointed to by ``\fIwstr\fP''.  
+``\fILen\fP'' is the number of bytes in ``\fIstr\fP'' to be converted.  
+The return value is the number of characters converted.
+.LP 
+The call 
+.PN _Xmbtowc
+is equivalent to
+.RS
+_Xlcmbtowc((XLCd)NULL, \fIwstr\fP, \fIstr\fP, \fIlen\fP)
+.RE
+.LP
+.FD 0
+int _Xlcmbtowc(\fIlcd\fP, \fIwstr\fP, \fIstr\fP, \fIlen\fP)
+.br
+      XLCd \fIlcd\fP;
+.br
+      wchar_t \fI*wstr\fP;
+.br
+      char \fI*str\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xlcmbtowc
+function is identical to 
+.PN _Xmbtowc, 
+except that it requires the ``\fIlcd\fP'' argument.  If ``\fIlcd\fP'' 
+is (XLCd) NULL, 
+.PN _Xlcmbtowc, 
+calls 
+.PN _XlcCurrentLC 
+to determine the current locale.
+.LP 
+.FD 0
+int _Xwctomb(\fIstr\fP, \fIwc\fP)
+.br
+      char \fI*str\fP;
+.br
+      wchar_t \fIwc\fP;
+.FN
+.LP
+The 
+.PN _Xwctomb 
+function converts a single wide character pointed to by ``\fIwc\fP'' to 
+its multibyte representation pointed to by ``\fIstr\fP''.  
+On success, the return value is 1.
+.LP 
+The call 
+.PN _Xwctomb
+is equivalent to
+.RS
+_Xlcwctomb((XLCd)NULL, \fIstr\fP, \fIwstr\fP)
+.RE
+.LP
+.FD 0
+int _Xlcwctomb(\fIlcd\fP, \fIstr\fP, \fIwc\fP)
+.br
+      XLCd \fIlcd\fP;
+.br
+      char \fI*str\fP;
+.br
+      wchar_t \fIwc\fP;
+.FN
+.LP
+The 
+.PN _Xlcwctomb
+function is identical to _Xwctomb, except that it requires the 
+``\fIlcd\fP'' argument.  If ``\fIlcd\fP'' is (XLCd) NULL, 
+.PN _Xlcwctomb, 
+calls 
+.PN _XlcCurrentLC 
+to determine the current locale.
+.LP
+.FD 0
+int _Xmbstowcs(\fIwstr\fP, \fIstr\fP, \fIlen\fP)
+.br
+      wchar_t \fI*wstr\fP;
+.br
+      char \fI*str\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xmbstowcs
+function converts the NULL-terminated string pointed to by ``\fIstr\fP'' 
+to its wide character string representation pointed to by ``\fIwstr\fP''.
+``\fILen\fP'' is the number of characters in ``\fIstr\fP'' to be converted.
+.LP
+The call 
+.PN _Xmbstowcs
+is equivalent to
+.RS
+_Xlcmbstowcs((XLCd)NULL, \fIwstr\fP, \fIstr\fP, \fIlen\fP)
+.RE
+.LP
+.FD 0
+int _Xlcmbstowcs(\fIlcd\fP, \fIwstr\fP, \fIstr\fP, \fIlen\fP)
+.br
+      XLCd \fIlcd\fP;
+.br
+      wchar_t \fI*wstr\fP;
+.br
+      char \fI*str\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xlcmbstowcs 
+function is identical to _Xmbstowcs, except that it requires the 
+``\fIlcd\fP'' argument.  If ``\fIlcd\fP'' is (XLCd) NULL, 
+.PN _Xlcmbstowcs, 
+calls 
+.PN _XlcCurrentLC
+to determine the current locale.
+.LP
+.FD 0
+int _Xwcstombs(\fIstr\fP, \fIwstr\fP, \fIlen\fP)
+.br
+      char \fI*str\fP;
+.br
+      wchar_t \fI*wstr\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xwcstombs 
+function converts the (wchar_t) NULL terminated wide character string 
+pointed to by ``\fIwstr\fP'' to the NULL terminated multibyte string 
+pointed to by ``\fIstr\fP''.
+.LP 
+The call 
+.PN _Xwcstombs 
+is equivalent to
+.RS
+_Xlcwcstombs((XLCd)NULL, \fIstr\fP, \fIwstr\fP, \fIlen\fP)
+.RE
+.LP
+.FD 0
+int _Xlcwcstombs(\fIlcd\fP, \fIstr\fP, \fIwstr\fP, \fIlen\fP)
+.br
+      XLCd \fIlcd\fP;
+.br
+      char \fI*str\fP;
+.br
+      wchar_t \fI*wstr\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xlcwcstombs 
+function is identical to _Xwcstombs, except that it requires the 
+``\fIlcd\fP'' argument.  If ``\fIlcd\fP'' is (XLCd) NULL, 
+.PN _Xlcwcstombs, 
+calls 
+.PN _XlcCurrentLC 
+to determine the current locale.
+.LP
+.FD 0
+int _Xwcslen(\fIwstr\fP)
+.br
+      wchar_t \fI*wstr\fP;
+.FN
+.LP
+The 
+.PN _Xwcslen 
+function returns the count of wide characters in the (wchar_t) NULL 
+terminated wide character string pointed to by ``\fIwstr\fP''.
+.LP
+.FD 0
+wchar_t * _Xwcscpy(\fIwstr1\fP, \fIwstr2\fP)
+.br
+      wchar_t \fI*wstr1\fP, \fI*wstr2\fP;
+.FN
+.FD 0
+wchar_t * _Xwcsncpy(\fIwstr1\fP, \fIwstr2\fP, \fIlen\fP)
+.br
+      wchar_t \fI*wstr1\fP, \fI*wstr2\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xwcscpy 
+function copies the (wchar_t) NULL terminated wide character string 
+pointed to by ``\fIwstr2\fP'' to the object pointed at by ``\fIwstr1\fP''.
+``\fIWstr1\fP'' is (wchar_t) NULL terminated.  The return value is a 
+pointer to ``\fIwstr1\fP''.
+.LP
+The 
+.PN _Xwcsncpy
+function is identical to 
+.PN _Xwcscpy, 
+except that it copies ``\fIlen\fP'' wide characters from the object 
+pointed to by ``\fIwstr2\fP'' to the object pointed to ``\fIwstr1\fP''.
+.LP
+.FD 0
+int _Xwcscmp(\fIwstr1\fP, \fIwstr2\fP)
+.br
+      wchar_t \fI*wstr1\fP, \fI*wstr2\fP;
+.FN
+.FD 0
+int _Xwcsncmp(\fIwstr1\fP, \fIwstr2\fP, \fIlen\fP)
+.br
+      wchar_t \fI*wstr1\fP, \fI*wstr2\fP;
+.br
+      int \fIlen\fP;
+.FN
+.LP
+The 
+.PN _Xwcscmp 
+function  compares two (wchar_t) NULL terminated wide character strings.  
+The value returned is an integer less than, equal to, or greater than zero, 
+depending on whether ``\fIwstr1\fP'' is lexicographicly less then, equal to,
+or greater than ``\fIstr2\fP''.
+.LP 
+The 
+.PN _Xwcsncmp 
+function is identical to 
+.PN _XlcCompareISOLatin1, 
+except that at most ``\fIlen\fP'' wide characters are compared.
+.sp
+.\" --------------------------------------------------------------------
+.\" .LP
+.\" \fBLocale Method Internal Functions\fP
+.\" .LP
+.\" .FD 0
+.\" XlcCharSet _XlcCreateDefaultCharSet(\fIname\fP, \fIct_sequence\fP)
+.\" .br
+.\"       char \fI*name\fP;
+.\" .br
+.\"       char \fI*ct_sequence\fP;
+.\" .FN
+.\" .FD 0
+.\" Bool _XlcParseCharSet(\fIcharset\fP)
+.\" .br
+.\"       XlcCharSet \fIcharset\fP;
+.\" .FN
+.\" .FD 0
+.\" void _XlcGetLocaleDataBase(\fIlcd\fP, \fIcategory\fP, \fIname\fP, \fIvalue\fP, \fIcount\fP)
+.\" .br
+.\"       XLCd \fIlcd\fP;
+.\" .br
+.\"       char \fI*category\fP;
+.\" .br
+.\"       char \fI*name\fP;
+.\" .br
+.\"       char \fI***value\fP;
+.\" .br
+.\"       int \fI*count\fP;
+.\" .FN
+.\" .FD 0
+.\" void _XlcDestroyLocaleDataBase(\fIlcd\fP)
+.\" .br
+.\"       XLCd \fIlcd\fP;
+.\" .FN
+.\" .FD 0
+.\" XPointer _XlcCreateLocaleDataBase(\fIlcd\fP)
+.\" .br
+.\"       XLCd \fIlcd\fP;
+.\" .FN
+.\" .LP
+.\" .sp
+.\" \fBObtain an locale database path\fP
+.\" .LP
+.\" .FD 0
+.\" int _XlcResolveI18NPath(\fIdir\fP)
+.\" .br
+.\"       char \fI*dir\fP;
+.\" .FN
+.\" .LP
+.\" The 
+.\" .PN _XlcResolveI18NPath 
+.\" function returns path name list that is related to X Locale Database.
+.\" The obtained path is stored into the array which is pointed by
+.\" specified ``\fIdir\fP''.  The path consists of directory paths which 
+.\" are separated with colon.
+.\" If the environment variable XLOCALEDIR is specified, the path
+.\" contains its contents.
+.\" .LP
+.\" The default path of X Locale Database is implementation dependent.
+.\" In current implementation, it's determined in build time.
+.\" .LP
+.\" .PN _XlcResolveI18NPath 
+.\" does not check overflow of the array to which the ``\fIdir\fP'' 
+.\" parameter points.  Caller should provide enough buffer to store this 
+.\" string.
+.\" .LP
+.\" .sp
+.\" \fBObtain a full locale name\fP
+.\" .LP
+.\" .FD 0
+.\" int _XlcResolveLocaleName(\fIlc_name\fP, \fIfull_name\fP, \fIlanguage\fP, \fIterritory\fP, \fIcodeset\fP)
+.\" .br
+.\"       char \fI*lc_name\fP;
+.\" .br
+.\"       char \fI*full_name\fP;
+.\" .br
+.\"       char \fI*language\fP;
+.\" .br
+.\"       char \fI*territory\fP;
+.\" .br
+.\"       char \fI*codeset\fP;
+.\" .FN
+.\" .LP
+.\" The 
+.\" .PN _XlcResolveLocaleName 
+.\" function returns a full locale name.
+.\" The obtained full locale name is stored into the array which is
+.\" pointed by specified ``\fIfull_name\fP''.
+.\" The language, territory and codeset part of the full locale name
+.\" are copied to the return arguments, ``\fIlanguage\fP'', 
+.\" ``\fIterritory\fP'' and ``\fIcodeset\fP'', respectively.
+.\" NULL can be specified for these arguments.
+.\" .LP
+.\" The rule for mapping from locale name to full locale name is
+.\" implementation dependent.
+.\" .LP
+.\" .PN _XlcResolveLocaleName 
+.\" does not check overflow of the array to which
+.\" ``\fIfull_name\fP'', ``\fIlanguage\fP'', ``\fIterritory\fP'' and 
+.\" ``\fIcodeset\fP'' parameter point.
+.\" Caller should provide enough buffer to store those string.
+.\" .LP
+.\" In current implementation, 
+.\" .PN _XlcResolveLocaleName 
+.\" uses locale.alias file as mapping table, which has pairs of strings, 
+.\" a locale name and a full locale name.
+.\" .LP
+.\" .FD 0
+.\" int _XlcResolveDBName(\fIlc_name\fP, \fIfile_name\fP)
+.\" .br
+.\"       char \fI*lc_name\fP;
+.\" .br
+.\"       char \fI*file_name\fP;
+.\" .FN
+.\" .FD 0 
+.\" XLCd _XlcCreateLC(\fIname\fP, \fImethods\fP)
+.\" .br
+.\"       char \fI*name\fP;
+.\" .br
+.\"       XLCdMethods \fImethods\fP;
+.\" .FN
+.\" .FD 0
+.\" void _XlcDestroyLC(\fIlcd\fP)
+.\" .br
+.\"       XLCd \fIlcd\fP;
+.\" .FN
+.\" .LP
+.\" 
+