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XX LLooccaallee DDaattaabbaassee DDeeffiinniittiioonn
_Y_o_s_h_i_o _H_o_r_i_u_c_h_i
IBM Japan
Copyright © IBM Corporation 1994
All Rights Reserved
License to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is
hereby granted, provided that the above copyright notice
appear in all copies and that both that copyright notice and
this permission notice appear in supporting documentation,
and that the name of IBM not be used in advertising or pub-
licity pertaining to distribution of the software without
specific, written prior permission.
IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FIT-
NESS, AND NONINFRINGEMENT OF THIRD PARTY RIGHTS, IN NO EVENT
SHALL IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUEN-
TIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Copyright © 1994 X Consortium
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documenta-
tion files (the ``Software''), to deal in the Software with-
out 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 fol-
lowing conditions:
The above copyright notice and this permission notice shall
be included in all copies or substantial portions of the
Software.
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 PUR-
POSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSOR-
TIUM 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.
Except as contained in this notice, the name of the X Con-
sortium 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.
_X _W_i_n_d_o_w _S_y_s_t_e_m is a trademark of The Open Group.
11.. GGeenneerraall
An X Locale Database contains the subset of a user's envi-
ronment that depends on language, in X Window System. It is
made up from one or more categories. Each category consists
of some classes and sub-classes.
It is provided as a plain ASCII text file, so a user can
change its contents easily. It allows a user to customize
the behavior of internationalized portion of Xlib without
changing Xlib itself.
This document describes;
Database Format Definition
Contents of Database in sample implementation
Since it is hard to define the set of required information
for all platforms, only the flexible database format is
defined. The available entries in database are implementa-
tion dependent.
22.. DDaattaabbaassee FFoorrmmaatt DDeeffiinniittiioonn
The X Locale Database contains one or more category defini-
tions. This section describes the format of each category
definition.
The category definition consists of one or more class defi-
nitions. Each class definition has a pair of class name and
class value, or has several subclasses which are enclosed by
the left brace ({) and the right brace (}).
Comments can be placed by using the number sign character
(#). Putting the number sign character on the top of the
line indicates that the entire line is comment. Also,
putting any whitespace character followed by the number sign
character indicates that a part of the line (from the number
sign to the end of the line) is comment. A line can be con-
tinued by placing backslash (\) character as the last char-
acter on the line; this continuation character will be dis-
carded from the input. Comment lines cannot be continued on
a subsequent line using an escaped new line character.
X Locale Database only accepts XPCS, the X Portable Charac-
ter Set. The reserved symbols are; the quotation mark("),
the number sign (#), the semicolon(;), the backslash(\), the
left brace({) and the right brace(}).
The format of category definition is;
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XX LLooccaallee DDaattaabbaassee DDeeffiinniittiioonn lliibbXX1111 11..33..22
CategoryDefinition ::= CategoryHeader CategorySpec CategoryTrailer
CategoryHeader ::= CategoryName NL
CategorySpec ::= { ClassSpec }
CategoryTrailer ::= "END" Delimiter CategoryName NL
CategoryName ::= String
ClassSpec ::= ClassName Delimiter ClassValue NL
ClassName ::= String
ClassValue ::= ValueList | "{" NL { ClassSpec } "}"
ValueList ::= Value | Value ";" ValueList
Value ::= ValuePiece | ValuePiece Value
ValuePiece ::= String | QuotedString | NumericString
String ::= Char { Char }
QuotedString ::= """ QuotedChar { QuotedChar } """
NumericString ::= "\\o" OctDigit { OctDigit }
| "\\d" DecDigit { DecDigit }
| "\\x" HexDigit { HexDigit }
Char ::= <XPCS except NL, Space or unescaped reserved symbols>
QuotedChar ::= <XPCS except unescaped """>
OctDigit ::= <character in the range of "0" - "7">
DecDigit ::= <character in the range of "0" - "9">
HexDigit ::= <character in the range of "0" - "9", "a" - "f", "A" - "F">
Delimiter ::= Space { Space }
Space ::= <space> | <horizontal tab>
NL ::= <newline>
Elements separated by vertical bar (|) are alternatives.
Curly braces ({...}) indicate zero or more repetitions of
the enclosed elements. Square brackets ([...]) indicate
that the enclosed element is optional. Quotes ("...") are
used around literal characters.
The backslash, which is not the top character of the Numer-
icString, is recognized as an escape character, so that the
next one character is treated as a literal character. For
example, the two-character sequence, ``\"''(the backslash
followed by the quotation mark) is recognized and replaced
with a quotation mark character. Any whitespace character,
that is not the Delimiter, unquoted and unescaped, is
ignored.
33.. CCoonntteennttss ooff DDaattaabbaassee
The available categories and classes depend on implementa-
tion, because different platform will require different
information set. For example, some platform have system
locale but some platform don't. Furthermore, there might be
a difference in functionality even if the platform has sys-
tem locale.
In current sample implementation, categories listed below
are available.
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XLC_FONTSET XFontSet relative information
XLC_XLOCALE Character classification and conversion information
44.. XXLLCC__FFOONNTTSSEETT CCaatteeggoorryy
The XLC_FONTSET category defines the XFontSet relative
information. It contains the CHARSET_REGISTRY-
CHARSET_ENCODING name and character mapping side (GL, GR,
etc), and is used in Output Method (OM).
-----------------------------------------------------------
ccllaassss ssuuppeerr ccllaassss ddeessccrriippttiioonn
-----------------------------------------------------------
fsN Nth fontset (N=0,1,2, ...)
charset fsN list of encoding name
font fsN list of font encoding name
-----------------------------------------------------------
fsN
Includes an encoding information for Nth charset, where
N is the index number (0,1,2,...). If there are 4
charsets available in current locale, 4 fontsets, fs0,
fs1, fs2 and fs3, should be defined. This class has
two subclasses, `charset' and `font'.
charset
Specifies an encoding information to be used internally
in Xlib for this fontset. The format of value is;
EncodingInfo ::= EncodingName [ ":" EncodingSide ]
EncodingName ::= CHARSET_REGISTRY-CHARSET_ENCODING
EncodingSide ::= "GL" | "GR"
For detail definition of CHARSET_REGISTRY-
CHARSET_ENCODING, refer "X Logical Font Descriptions"
document.
example:
ISO8859-1:GL
font
Specifies a list of encoding information which is used
for searching appropriate font for this fontset. The
left most entry has highest priority.
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55.. XXLLCC__XXLLOOCCAALLEE CCaatteeggoorryy
The XLC_XLOCALE category defines character classification,
conversion and other character attributes.
-----------------------------------------------------------------------
ccllaassss ssuuppeerr ccllaassss ddeessccrriippttiioonn
-----------------------------------------------------------------------
encoding_name codeset name
mb_cur_max MB_CUR_MAX
state_depend_encoding state dependent or not
wc_encoding_mask for parsing wc string
wc_shift_bits for conversion between wc and mb
csN Nth charset (N=0,1,2,...)
side csN mapping side (GL, etc)
length csN length of a character
mb_encoding csN for parsing mb string
wc_encoding csN for parsing wc string
ct_encoding csN list of encoding name for ct
-----------------------------------------------------------------------
encoding_name
Specifies a codeset name of current locale.
mb_cur_max
Specifies a maximum allowable number of bytes in a
multi-byte character. It is corresponding to
MB_CUR_MAX of "ISO/IEC 9899:1990 C Language Standard".
state_depend_encoding
Indicates a current locale is state dependent. The
value should be specified "True" or "False".
wc_encoding_mask
Specifies a bit-mask for parsing wide-char string.
Each wide character is applied bit-and operation with
this bit-mask, then is classified into the unique
charset, by using `wc_encoding'.
wc_shift_bits
Specifies a number of bit to be shifted for converting
from a multi-byte character to a wide character, and
vice-versa.
csN
Includes a character set information for Nth charset,
where N is the index number (0,1,2,...). If there are
4 charsets available in current locale, cs0, cs1, cs2
and cs3 should be defined. This class has five sub-
classes, `side', `length', `mb_encoding' `wc_encoding'
and `ct_encoding'.
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side
Specifies a mapping side of this charset. The format of
this value is;
Side ::= EncodingSide [``:Default'']
The suffix ":Default" can be specified. It indicates
that a character belongs to the specified side is
mapped to this charset in initial state.
length
Specifies a number of bytes of a multi-byte character
of this charset. It should not contain the length of
any single-shift sequence.
mb_encoding
Specifies a list of shift sequence for parsing multi-
byte string. The format of this value is;
MBEncoding ::= ShiftType ShiftSequence
| ShiftType ShiftSequence ";" MBEncoding
ShiftType ::= "<SS>" | "<LSL>" | "<LSR>"
ShiftSequence ::= SequenceValue | SequenceValue ShiftSequence
SequenceValue ::= NumericString
shift types:
<SS> Indicates single shift sequence
<LSL> Indicates locking shift left sequence
<LSR> Indicates locking shift right sequence
example:
<LSL> \x1b \x28 \x4a; <LSL> \x1b \x28 \x42
wc_encoding
Specifies an integer value for parsing wide-char
string. It is used to determine the charset for each
wide character, after applying bit-and operation using
`wc_encoding_mask'. This value should be unique in all
csN classes.
ct_encoding
Specifies a list of encoding information that can be
used for Compound Text.
66.. SSaammppllee ooff XX LLooccaallee DDaattaabbaassee
The following is sample X Locale Database file.
# $Xorg: LocaleDB.ms,v 1.3 2000/08/17 19:42:49 cpqbld Exp $
# XLocale Database Sample for ja_JP.euc
#
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#
# XLC_FONTSET category
#
XLC_FONTSET
# fs0 class (7 bit ASCII)
fs0 {
charset ISO8859-1:GL
font ISO8859-1:GL; JISX0201.1976-0:GL
}
# fs1 class (Kanji)
fs1 {
charset JISX0208.1983-0:GL
font JISX0208.1983-0:GL
}
# fs2 class (Half Kana)
fs2 {
charset JISX0201.1976-0:GR
font JISX0201.1976-0:GR
}
# fs3 class (User Defined Character)
# fs3 {
# charset JISX0212.1990-0:GL
# font JISX0212.1990-0:GL
# }
END XLC_FONTSET
#
# XLC_XLOCALE category
#
XLC_XLOCALE
encoding_name ja.euc
mb_cur_max 3
state_depend_encoding False
wc_encoding_mask \x00008080
wc_shift_bits 8
# cs0 class
cs0 {
side GL:Default
length 1
wc_encoding \x00000000
ct_encoding ISO8859-1:GL; JISX0201.1976-0:GL
}
# cs1 class
cs1 {
side GR:Default
length 2
wc_encoding \x00008080
ct_encoding JISX0208.1983-0:GL; JISX0208.1983-0:GR;\
JISX0208.1983-1:GL; JISX0208.1983-1:GR
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}
# cs2 class
cs2 {
side GR
length 1
mb_encoding <SS> \x8e
wc_encoding \x00000080
ct_encoding JISX0201.1976-0:GR
}
# cs3 class
# cs3 {
# side GL
# length 2
# mb_encoding <SS> \x8f
# #if HasWChar32
# wc_encoding \x20000000
# #else
# wc_encoding \x00008000
# #endif
# ct_encoding JISX0212.1990-0:GL; JISX0212.1990-0:GR
# }
END XLC_XLOCALE
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[2] _X _L_o_g_i_c_a_l _F_o_n_t _D_e_s_c_r_i_p_t_i_o_n_s
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