svn merge "^/branches/released" .

3 files changed, 2542 insertions, 3282 deletions

diff --git a/libX11/src/xlibi18n/Makefile.am b/libX11/src/xlibi18n/Makefile.am
index fa5a1c071..3215a42e6 100644
--- a/libX11/src/xlibi18n/Makefile.am
+++ b/libX11/src/xlibi18n/Makefile.am
@@ -1,151 +1,152 @@
-AM_CPPFLAGS= \
-	-I$(top_srcdir)/include \
-	-I$(top_srcdir)/include/X11 \
-	-I$(top_builddir)/include \
-	-I$(top_builddir)/include/X11 \
-	-I$(top_srcdir)/src/xcms \
-	-I$(top_srcdir)/src/xkb \
-	-I$(top_srcdir)/src/xlibi18n \
-	-I$(top_srcdir)/src \
-	-D_BSD_SOURCE
-
-AM_CFLAGS= \
-	$(X11_CFLAGS) \
-	$(BIGFONT_CFLAGS) \
-	$(XDMCP_CFLAGS) \
-	$(XMALLOC_ZERO_CFLAGS)
-
-noinst_LTLIBRARIES = libi18n.la
-
-
-#
-# Dynamic loading code for i18n modules
-#
-if XLIB_LOADABLE_I18N
-XI18N_DL_SOURCES = \
-                  XlcDL.c \
-                  XlcSL.c
-else
-#
-# Static interfaces to input/output methods
-#
-IM_LIBS = \
-	${top_builddir}/modules/im/ximcp/libximcp.la
-
-LC_LIBS = \
-	${top_builddir}/modules/lc/def/libxlcDef.la \
-	${top_builddir}/modules/lc/gen/libxlibi18n.la \
-	${top_builddir}/modules/lc/Utf8/libxlcUTF8Load.la \
-	${top_builddir}/modules/lc/xlocale/libxlocale.la
-
-OM_LIBS = \
-	${top_builddir}/modules/om/generic/libxomGeneric.la
-endif
-
-libi18n_la_LIBADD = \
-	 $(IM_LIBS) $(LC_LIBS) $(OM_LIBS)
-
-libi18n_la_SOURCES = \
-	$(XI18N_DL_SOURCES) \
-	XDefaultIMIF.c \
-	XDefaultOMIF.c \
-	xim_trans.c\
-	ICWrap.c\
-	IMWrap.c\
-	imKStoUCS.c\
-	lcCT.c\
-	lcCharSet.c\
-	lcConv.c\
-	lcDB.c\
-	lcDynamic.c\
-	lcFile.c\
-	lcGeneric.c\
-	lcInit.c\
-	lcPrTxt.c\
-	lcPubWrap.c\
-	lcPublic.c\
-	lcRM.c\
-	lcStd.c\
-	lcTxtPr.c\
-	lcUTF8.c\
-	lcUtil.c\
-	lcWrap.c\
-	mbWMProps.c\
-	mbWrap.c\
-	utf8WMProps.c\
-	utf8Wrap.c\
-	wcWrap.c\
-	Xaixlcint.h\
-	XimImSw.h\
-	XimProto.h\
-	XimThai.h\
-	XimTrInt.h\
-	XimTrX.h\
-	XimTrans.h\
-	Ximint.h\
-	XimintL.h\
-	XimintP.h\
-	XlcGeneric.h\
-	XlcPubI.h\
-	XlcPublic.h\
-	Xlcint.h\
-	lcUniConv/armscii_8.h\
-	lcUniConv/ascii.h\
-	lcUniConv/big5.h\
-	lcUniConv/big5_emacs.h\
-	lcUniConv/big5hkscs.h\
-	lcUniConv/cp1133.h\
-	lcUniConv/cp1251.h\
-	lcUniConv/cp1255.h\
-	lcUniConv/cp1256.h\
-	lcUniConv/gb2312.h\
-	lcUniConv/gbk.h\
-	lcUniConv/georgian_academy.h\
-	lcUniConv/georgian_ps.h\
-	lcUniConv/iso8859_1.h\
-	lcUniConv/iso8859_10.h\
-	lcUniConv/iso8859_11.h\
-	lcUniConv/iso8859_13.h\
-	lcUniConv/iso8859_14.h\
-	lcUniConv/iso8859_15.h\
-	lcUniConv/iso8859_16.h\
-	lcUniConv/iso8859_2.h\
-	lcUniConv/iso8859_3.h\
-	lcUniConv/iso8859_4.h\
-	lcUniConv/iso8859_5.h\
-	lcUniConv/iso8859_6.h\
-	lcUniConv/iso8859_7.h\
-	lcUniConv/iso8859_8.h\
-	lcUniConv/iso8859_9.h\
-	lcUniConv/iso8859_9e.h\
-	lcUniConv/jisx0201.h\
-	lcUniConv/jisx0208.h\
-	lcUniConv/jisx0212.h\
-	lcUniConv/koi8_c.h\
-	lcUniConv/koi8_r.h\
-	lcUniConv/koi8_u.h\
-	lcUniConv/ksc5601.h\
-	lcUniConv/mulelao.h\
-	lcUniConv/tatar_cyr.h\
-	lcUniConv/tcvn.h\
-	lcUniConv/tis620.h\
-	lcUniConv/ucs2be.h\
-	lcUniConv/utf8.h\
-	lcUniConv/viscii.h
-
-EXTRA_DIST = \
-	lcUniConv/README \
-	lcUniConv/COPYRIGHT \
-	lcUniConv/8bit_tab_to_h.c \
-	lcUniConv/cjk_tab_to_h.c
-
-if LINT
-# Check source code with tools like lint & sparse
-
-ALL_LINT_FLAGS=$(LINT_FLAGS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
-		$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS)
-
-lint:
-	$(LINT) $(ALL_LINT_FLAGS) $(libi18n_la_SOURCES)
-
-endif LINT
+AM_CPPFLAGS= \

+	-I$(top_srcdir)/include \

+	-I$(top_srcdir)/include/X11 \

+	-I$(top_builddir)/include \

+	-I$(top_builddir)/include/X11 \

+	-I$(top_srcdir)/src/xcms \

+	-I$(top_srcdir)/src/xkb \

+	-I$(top_srcdir)/src/xlibi18n \

+	-I$(top_srcdir)/src \

+	-D_BSD_SOURCE

+

+AM_CFLAGS= \

+	$(X11_CFLAGS) \

+	$(BIGFONT_CFLAGS) \

+	$(XDMCP_CFLAGS) \

+	$(XMALLOC_ZERO_CFLAGS) \

+	$(CWARNFLAGS)

+

+noinst_LTLIBRARIES = libi18n.la

+

+

+#

+# Dynamic loading code for i18n modules

+#

+if XLIB_LOADABLE_I18N

+XI18N_DL_SOURCES = \

+                  XlcDL.c \

+                  XlcSL.c

+else

+#

+# Static interfaces to input/output methods

+#

+IM_LIBS = \

+	${top_builddir}/modules/im/ximcp/libximcp.la

+

+LC_LIBS = \

+	${top_builddir}/modules/lc/def/libxlcDef.la \

+	${top_builddir}/modules/lc/gen/libxlibi18n.la \

+	${top_builddir}/modules/lc/Utf8/libxlcUTF8Load.la \

+	${top_builddir}/modules/lc/xlocale/libxlocale.la

+

+OM_LIBS = \

+	${top_builddir}/modules/om/generic/libxomGeneric.la

+endif

+

+libi18n_la_LIBADD = \

+	 $(IM_LIBS) $(LC_LIBS) $(OM_LIBS)

+

+libi18n_la_SOURCES = \

+	$(XI18N_DL_SOURCES) \

+	XDefaultIMIF.c \

+	XDefaultOMIF.c \

+	xim_trans.c\

+	ICWrap.c\

+	IMWrap.c\

+	imKStoUCS.c\

+	lcCT.c\

+	lcCharSet.c\

+	lcConv.c\

+	lcDB.c\

+	lcDynamic.c\

+	lcFile.c\

+	lcGeneric.c\

+	lcInit.c\

+	lcPrTxt.c\

+	lcPubWrap.c\

+	lcPublic.c\

+	lcRM.c\

+	lcStd.c\

+	lcTxtPr.c\

+	lcUTF8.c\

+	lcUtil.c\

+	lcWrap.c\

+	mbWMProps.c\

+	mbWrap.c\

+	utf8WMProps.c\

+	utf8Wrap.c\

+	wcWrap.c\

+	Xaixlcint.h\

+	XimImSw.h\

+	XimProto.h\

+	XimThai.h\

+	XimTrInt.h\

+	XimTrX.h\

+	XimTrans.h\

+	Ximint.h\

+	XimintL.h\

+	XimintP.h\

+	XlcGeneric.h\

+	XlcPubI.h\

+	XlcPublic.h\

+	Xlcint.h\

+	lcUniConv/armscii_8.h\

+	lcUniConv/ascii.h\

+	lcUniConv/big5.h\

+	lcUniConv/big5_emacs.h\

+	lcUniConv/big5hkscs.h\

+	lcUniConv/cp1133.h\

+	lcUniConv/cp1251.h\

+	lcUniConv/cp1255.h\

+	lcUniConv/cp1256.h\

+	lcUniConv/gb2312.h\

+	lcUniConv/gbk.h\

+	lcUniConv/georgian_academy.h\

+	lcUniConv/georgian_ps.h\

+	lcUniConv/iso8859_1.h\

+	lcUniConv/iso8859_10.h\

+	lcUniConv/iso8859_11.h\

+	lcUniConv/iso8859_13.h\

+	lcUniConv/iso8859_14.h\

+	lcUniConv/iso8859_15.h\

+	lcUniConv/iso8859_16.h\

+	lcUniConv/iso8859_2.h\

+	lcUniConv/iso8859_3.h\

+	lcUniConv/iso8859_4.h\

+	lcUniConv/iso8859_5.h\

+	lcUniConv/iso8859_6.h\

+	lcUniConv/iso8859_7.h\

+	lcUniConv/iso8859_8.h\

+	lcUniConv/iso8859_9.h\

+	lcUniConv/iso8859_9e.h\

+	lcUniConv/jisx0201.h\

+	lcUniConv/jisx0208.h\

+	lcUniConv/jisx0212.h\

+	lcUniConv/koi8_c.h\

+	lcUniConv/koi8_r.h\

+	lcUniConv/koi8_u.h\

+	lcUniConv/ksc5601.h\

+	lcUniConv/mulelao.h\

+	lcUniConv/tatar_cyr.h\

+	lcUniConv/tcvn.h\

+	lcUniConv/tis620.h\

+	lcUniConv/ucs2be.h\

+	lcUniConv/utf8.h\

+	lcUniConv/viscii.h

+

+EXTRA_DIST = \

+	lcUniConv/README \

+	lcUniConv/COPYRIGHT \

+	lcUniConv/8bit_tab_to_h.c \

+	lcUniConv/cjk_tab_to_h.c

+

+if LINT

+# Check source code with tools like lint & sparse

+

+ALL_LINT_FLAGS=$(LINT_FLAGS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \

+		$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS)

+

+lint:

+	$(LINT) $(ALL_LINT_FLAGS) $(libi18n_la_SOURCES)

+

+endif LINT

diff --git a/libX11/src/xlibi18n/Makefile.in b/libX11/src/xlibi18n/Makefile.in
deleted file mode 100644
index c54895af1..000000000
--- a/libX11/src/xlibi18n/Makefile.in
+++ /dev/null
@@ -1,741 +0,0 @@
-# Makefile.in generated by automake 1.11.1 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
-# Inc.
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-VPATH = @srcdir@
-pkgdatadir = $(datadir)/@PACKAGE@
-pkgincludedir = $(includedir)/@PACKAGE@
-pkglibdir = $(libdir)/@PACKAGE@
-pkglibexecdir = $(libexecdir)/@PACKAGE@
-am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
-install_sh_DATA = $(install_sh) -c -m 644
-install_sh_PROGRAM = $(install_sh) -c
-install_sh_SCRIPT = $(install_sh) -c
-INSTALL_HEADER = $(INSTALL_DATA)
-transform = $(program_transform_name)
-NORMAL_INSTALL = :
-PRE_INSTALL = :
-POST_INSTALL = :
-NORMAL_UNINSTALL = :
-PRE_UNINSTALL = :
-POST_UNINSTALL = :
-build_triplet = @build@
-host_triplet = @host@
-subdir = src/xlibi18n
-DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
-ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/acinclude.m4 \
-	$(top_srcdir)/configure.ac
-am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
-	$(ACLOCAL_M4)
-mkinstalldirs = $(install_sh) -d
-CONFIG_HEADER = $(top_builddir)/src/config.h \
-	$(top_builddir)/include/X11/XlibConf.h
-CONFIG_CLEAN_FILES =
-CONFIG_CLEAN_VPATH_FILES =
-LTLIBRARIES = $(noinst_LTLIBRARIES)
-libi18n_la_DEPENDENCIES = $(IM_LIBS) $(LC_LIBS) $(OM_LIBS)
-am__libi18n_la_SOURCES_DIST = XlcDL.c XlcSL.c XDefaultIMIF.c \
-	XDefaultOMIF.c xim_trans.c ICWrap.c IMWrap.c imKStoUCS.c \
-	lcCT.c lcCharSet.c lcConv.c lcDB.c lcDynamic.c lcFile.c \
-	lcGeneric.c lcInit.c lcPrTxt.c lcPubWrap.c lcPublic.c lcRM.c \
-	lcStd.c lcTxtPr.c lcUTF8.c lcUtil.c lcWrap.c mbWMProps.c \
-	mbWrap.c utf8WMProps.c utf8Wrap.c wcWrap.c Xaixlcint.h \
-	XimImSw.h XimProto.h XimThai.h XimTrInt.h XimTrX.h XimTrans.h \
-	Ximint.h XimintL.h XimintP.h XlcGeneric.h XlcPubI.h \
-	XlcPublic.h Xlcint.h lcUniConv/armscii_8.h lcUniConv/ascii.h \
-	lcUniConv/big5.h lcUniConv/big5_emacs.h lcUniConv/big5hkscs.h \
-	lcUniConv/cp1133.h lcUniConv/cp1251.h lcUniConv/cp1255.h \
-	lcUniConv/cp1256.h lcUniConv/gb2312.h lcUniConv/gbk.h \
-	lcUniConv/georgian_academy.h lcUniConv/georgian_ps.h \
-	lcUniConv/iso8859_1.h lcUniConv/iso8859_10.h \
-	lcUniConv/iso8859_11.h lcUniConv/iso8859_13.h \
-	lcUniConv/iso8859_14.h lcUniConv/iso8859_15.h \
-	lcUniConv/iso8859_16.h lcUniConv/iso8859_2.h \
-	lcUniConv/iso8859_3.h lcUniConv/iso8859_4.h \
-	lcUniConv/iso8859_5.h lcUniConv/iso8859_6.h \
-	lcUniConv/iso8859_7.h lcUniConv/iso8859_8.h \
-	lcUniConv/iso8859_9.h lcUniConv/iso8859_9e.h \
-	lcUniConv/jisx0201.h lcUniConv/jisx0208.h lcUniConv/jisx0212.h \
-	lcUniConv/koi8_c.h lcUniConv/koi8_r.h lcUniConv/koi8_u.h \
-	lcUniConv/ksc5601.h lcUniConv/mulelao.h lcUniConv/tatar_cyr.h \
-	lcUniConv/tcvn.h lcUniConv/tis620.h lcUniConv/ucs2be.h \
-	lcUniConv/utf8.h lcUniConv/viscii.h
-@XLIB_LOADABLE_I18N_TRUE@am__objects_1 = XlcDL.lo XlcSL.lo
-am_libi18n_la_OBJECTS = $(am__objects_1) XDefaultIMIF.lo \
-	XDefaultOMIF.lo xim_trans.lo ICWrap.lo IMWrap.lo imKStoUCS.lo \
-	lcCT.lo lcCharSet.lo lcConv.lo lcDB.lo lcDynamic.lo lcFile.lo \
-	lcGeneric.lo lcInit.lo lcPrTxt.lo lcPubWrap.lo lcPublic.lo \
-	lcRM.lo lcStd.lo lcTxtPr.lo lcUTF8.lo lcUtil.lo lcWrap.lo \
-	mbWMProps.lo mbWrap.lo utf8WMProps.lo utf8Wrap.lo wcWrap.lo
-libi18n_la_OBJECTS = $(am_libi18n_la_OBJECTS)
-AM_V_lt = $(am__v_lt_$(V))
-am__v_lt_ = $(am__v_lt_$(AM_DEFAULT_VERBOSITY))
-am__v_lt_0 = --silent
-DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)/src -I$(top_builddir)/include/X11
-depcomp = $(SHELL) $(top_srcdir)/depcomp
-am__depfiles_maybe = depfiles
-am__mv = mv -f
-COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
-	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
-AM_V_CC = $(am__v_CC_$(V))
-am__v_CC_ = $(am__v_CC_$(AM_DEFAULT_VERBOSITY))
-am__v_CC_0 = @echo "  CC    " $@;
-AM_V_at = $(am__v_at_$(V))
-am__v_at_ = $(am__v_at_$(AM_DEFAULT_VERBOSITY))
-am__v_at_0 = @
-CCLD = $(CC)
-LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
-	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
-	$(AM_LDFLAGS) $(LDFLAGS) -o $@
-AM_V_CCLD = $(am__v_CCLD_$(V))
-am__v_CCLD_ = $(am__v_CCLD_$(AM_DEFAULT_VERBOSITY))
-am__v_CCLD_0 = @echo "  CCLD  " $@;
-AM_V_GEN = $(am__v_GEN_$(V))
-am__v_GEN_ = $(am__v_GEN_$(AM_DEFAULT_VERBOSITY))
-am__v_GEN_0 = @echo "  GEN   " $@;
-SOURCES = $(libi18n_la_SOURCES)
-DIST_SOURCES = $(am__libi18n_la_SOURCES_DIST)
-ETAGS = etags
-CTAGS = ctags
-DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
-ACLOCAL = @ACLOCAL@
-ADMIN_MAN_DIR = @ADMIN_MAN_DIR@
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-FILE_MAN_SUFFIX = @FILE_MAN_SUFFIX@
-GREP = @GREP@
-GROFF = @GROFF@
-I18N_MODULE_LIBS = @I18N_MODULE_LIBS@
-INSTALL = @INSTALL@
-INSTALL_CMD = @INSTALL_CMD@
-INSTALL_DATA = @INSTALL_DATA@
-INSTALL_PROGRAM = @INSTALL_PROGRAM@
-INSTALL_SCRIPT = @INSTALL_SCRIPT@
-INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
-KEYSYMDEF = @KEYSYMDEF@
-LAUNCHD = @LAUNCHD@
-LDFLAGS = @LDFLAGS@
-LIBOBJS = @LIBOBJS@
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-LIBTOOL = @LIBTOOL@
-LIB_MAN_DIR = @LIB_MAN_DIR@
-LIB_MAN_SUFFIX = @LIB_MAN_SUFFIX@
-LINT = @LINT@
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-PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
-PACKAGE_NAME = @PACKAGE_NAME@
-PACKAGE_STRING = @PACKAGE_STRING@
-PACKAGE_TARNAME = @PACKAGE_TARNAME@
-PACKAGE_URL = @PACKAGE_URL@
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-PKG_CONFIG = @PKG_CONFIG@
-PS2PDF = @PS2PDF@
-RANLIB = @RANLIB@
-RAWCPP = @RAWCPP@
-RAWCPPFLAGS = @RAWCPPFLAGS@
-SED = @SED@
-SET_MAKE = @SET_MAKE@
-SHELL = @SHELL@
-STRIP = @STRIP@
-VERSION = @VERSION@
-WCHAR32 = @WCHAR32@
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-X11_LIBDIR = @X11_LIBDIR@
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-XDMCP_CFLAGS = @XDMCP_CFLAGS@
-XDMCP_LIBS = @XDMCP_LIBS@
-XERRORDB = @XERRORDB@
-XKBPROTO_REQUIRES = @XKBPROTO_REQUIRES@
-XKEYSYMDB = @XKEYSYMDB@
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-XLOCALELIBDIR = @XLOCALELIBDIR@
-XMALLOC_ZERO_CFLAGS = @XMALLOC_ZERO_CFLAGS@
-XTHREADLIB = @XTHREADLIB@
-XTHREAD_CFLAGS = @XTHREAD_CFLAGS@
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-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/libX11/src/xlibi18n/lcUTF8.c b/libX11/src/xlibi18n/lcUTF8.c
index 7649bdbf4..5e47f23bb 100644
--- a/libX11/src/xlibi18n/lcUTF8.c
+++ b/libX11/src/xlibi18n/lcUTF8.c
@@ -1,2390 +1,2390 @@
-/******************************************************************
-
-              Copyright 1993 by SunSoft, Inc.
-              Copyright 1999-2000 by Bruno Haible
-
-Permission to use, copy, modify, distribute, and sell this software
-and its documentation for any purpose is hereby granted without fee,
-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 names of SunSoft, Inc. and
-Bruno Haible not be used in advertising or publicity pertaining to
-distribution of the software without specific, written prior
-permission.  SunSoft, Inc. and Bruno Haible make no representations
-about the suitability of this software for any purpose.  It is
-provided "as is" without express or implied warranty.
-
-SunSoft Inc. AND Bruno Haible DISCLAIM ALL WARRANTIES WITH REGARD
-TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
-AND FITNESS, IN NO EVENT SHALL SunSoft, Inc. OR Bruno Haible BE LIABLE
-FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 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.
-
-******************************************************************/
-
-/*
- * This file contains:
- *
- * I. Conversion routines CompoundText/CharSet <--> Unicode/UTF-8.
- *
- *    Used for three purposes:
- *      1. The UTF-8 locales, see below.
- *      2. Unicode aware applications for which the use of 8-bit character
- *         sets is an anachronism.
- *      3. For conversion from keysym to locale encoding.
- *
- * II. Conversion files for an UTF-8 locale loader.
- *     Supports: all locales with codeset UTF-8.
- *     How: Provides converters for UTF-8.
- *     Platforms: all systems.
- *
- * The loader itself is located in lcUTF8.c.
- */
-
-/*
- * The conversion from UTF-8 to CompoundText is realized in a very
- * conservative way. Recall that CompoundText data is used for inter-client
- * communication purposes. We distinguish three classes of clients:
- * - Clients which accept only those pieces of CompoundText which belong to
- *   the character set understood by the current locale.
- *   (Example: clients which are linked to an older X11 library.)
- * - Clients which accept CompoundText with multiple character sets and parse
- *   it themselves.
- *   (Example: emacs, xemacs.)
- * - Clients which rely entirely on the X{mb,wc}TextPropertyToTextList
- *   functions for the conversion of CompoundText to their current locale's
- *   multi-byte/wide-character format.
- * For best interoperation, the UTF-8 to CompoundText conversion proceeds as
- * follows. For every character, it first tests whether the character is
- * representable in the current locale's original (non-UTF-8) character set.
- * If not, it goes through the list of predefined character sets for
- * CompoundText and tests if the character is representable in that character
- * set. If so, it encodes the character using its code within that character
- * set. If not, it uses an UTF-8-in-CompoundText encapsulation. Since
- * clients of the first and second kind ignore such encapsulated text,
- * this encapsulation is kept to a minimum and terminated as early as possible.
- *
- * In a distant future, when clients of the first and second kind will have
- * disappeared, we will be able to stuff UTF-8 data directly in CompoundText
- * without first going through the list of predefined character sets.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include "Xlibint.h"
-#include "XlcPubI.h"
-#include "XlcGeneric.h"
-
-static XlcConv
-create_conv(
-    XLCd lcd,
-    XlcConvMethods methods)
-{
-    XlcConv conv;
-
-    conv = (XlcConv) Xmalloc(sizeof(XlcConvRec));
-    if (conv == (XlcConv) NULL)
-	return (XlcConv) NULL;
-
-    conv->methods = methods;
-    conv->state = NULL;
-
-    return conv;
-}
-
-static void
-close_converter(
-    XlcConv conv)
-{
-    Xfree((char *) conv);
-}
-
-/* Replacement character for invalid multibyte sequence or wide character. */
-#define BAD_WCHAR ((ucs4_t) 0xfffd)
-#define BAD_CHAR '?'
-
-/***************************************************************************/
-/* Part I: Conversion routines CompoundText/CharSet <--> Unicode/UTF-8.
- *
- * Note that this code works in any locale. We store Unicode values in
- * `ucs4_t' variables, but don't pass them to the user.
- *
- * This code has to support all character sets that are used for CompoundText,
- * nothing more, nothing less. See the table in lcCT.c.
- * Since the conversion _to_ CompoundText is likely to need the tables for all
- * character sets at once, we don't use dynamic loading (of tables or shared
- * libraries through iconv()). Use a fixed set of tables instead.
- *
- * We use statically computed tables, not dynamically allocated arrays,
- * because it's more memory efficient: Different processes using the same
- * libX11 shared library share the "text" and read-only "data" sections.
- */
-
-typedef unsigned int ucs4_t;
-#define conv_t XlcConv
-
-typedef struct _Utf8ConvRec {
-    const char *name;
-    XrmQuark xrm_name;
-    int (* cstowc) (XlcConv, ucs4_t *, unsigned char const *, int);
-    int (* wctocs) (XlcConv, unsigned char *, ucs4_t, int);
-} Utf8ConvRec, *Utf8Conv;
-
-/*
- * int xxx_cstowc (XlcConv conv, ucs4_t *pwc, unsigned char const *s, int n)
- * converts the byte sequence starting at s to a wide character. Up to n bytes
- * are available at s. n is >= 1.
- * Result is number of bytes consumed (if a wide character was read),
- * or 0 if invalid, or -1 if n too small.
- *
- * int xxx_wctocs (XlcConv conv, unsigned char *r, ucs4_t wc, int n)
- * converts the wide character wc to the character set xxx, and stores the
- * result beginning at r. Up to n bytes may be written at r. n is >= 1.
- * Result is number of bytes written, or 0 if invalid, or -1 if n too small.
- */
-
-/* Return code if invalid. (xxx_mbtowc, xxx_wctomb) */
-#define RET_ILSEQ      0
-/* Return code if only a shift sequence of n bytes was read. (xxx_mbtowc) */
-#define RET_TOOFEW(n)  (-1-(n))
-/* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */
-#define RET_TOOSMALL   -1
-
-/*
- * The tables below are bijective. It would be possible to extend the
- * xxx_wctocs tables to do some transliteration (e.g. U+201C,U+201D -> 0x22)
- * but *only* with characters not contained in any other table, and *only*
- * when the current locale is not an UTF-8 locale.
- */
-
-#include "lcUniConv/utf8.h"
-#include "lcUniConv/ucs2be.h"
-#ifdef notused
-#include "lcUniConv/ascii.h"
-#endif
-#include "lcUniConv/iso8859_1.h"
-#include "lcUniConv/iso8859_2.h"
-#include "lcUniConv/iso8859_3.h"
-#include "lcUniConv/iso8859_4.h"
-#include "lcUniConv/iso8859_5.h"
-#include "lcUniConv/iso8859_6.h"
-#include "lcUniConv/iso8859_7.h"
-#include "lcUniConv/iso8859_8.h"
-#include "lcUniConv/iso8859_9.h"
-#include "lcUniConv/iso8859_10.h"
-#include "lcUniConv/iso8859_11.h"
-#include "lcUniConv/iso8859_13.h"
-#include "lcUniConv/iso8859_14.h"
-#include "lcUniConv/iso8859_15.h"
-#include "lcUniConv/iso8859_16.h"
-#include "lcUniConv/iso8859_9e.h"
-#include "lcUniConv/jisx0201.h"
-#include "lcUniConv/tis620.h"
-#include "lcUniConv/koi8_r.h"
-#include "lcUniConv/koi8_u.h"
-#include "lcUniConv/koi8_c.h"
-#include "lcUniConv/armscii_8.h"
-#include "lcUniConv/cp1133.h"
-#include "lcUniConv/mulelao.h"
-#include "lcUniConv/viscii.h"
-#include "lcUniConv/tcvn.h"
-#include "lcUniConv/georgian_academy.h"
-#include "lcUniConv/georgian_ps.h"
-#include "lcUniConv/cp1251.h"
-#include "lcUniConv/cp1255.h"
-#include "lcUniConv/cp1256.h"
-#include "lcUniConv/tatar_cyr.h"
-
-typedef struct {
-    unsigned short indx; /* index into big table */
-    unsigned short used; /* bitmask of used entries */
-} Summary16;
-
-#include "lcUniConv/gb2312.h"
-#include "lcUniConv/jisx0208.h"
-#include "lcUniConv/jisx0212.h"
-#include "lcUniConv/ksc5601.h"
-#include "lcUniConv/big5.h"
-#include "lcUniConv/big5_emacs.h"
-#include "lcUniConv/big5hkscs.h"
-#include "lcUniConv/gbk.h"
-
-static Utf8ConvRec all_charsets[] = {
-    /* The ISO10646-1/UTF-8 entry occurs twice, once at the beginning
-       (for lookup speed), once at the end (as a fallback).  */
-    { "ISO10646-1", NULLQUARK,
-	utf8_mbtowc, utf8_wctomb
-    },
-
-    { "ISO8859-1", NULLQUARK,
-	iso8859_1_mbtowc, iso8859_1_wctomb
-    },
-    { "ISO8859-2", NULLQUARK,
-	iso8859_2_mbtowc, iso8859_2_wctomb
-    },
-    { "ISO8859-3", NULLQUARK,
-	iso8859_3_mbtowc, iso8859_3_wctomb
-    },
-    { "ISO8859-4", NULLQUARK,
-	iso8859_4_mbtowc, iso8859_4_wctomb
-    },
-    { "ISO8859-5", NULLQUARK,
-	iso8859_5_mbtowc, iso8859_5_wctomb
-    },
-    { "ISO8859-6", NULLQUARK,
-	iso8859_6_mbtowc, iso8859_6_wctomb
-    },
-    { "ISO8859-7", NULLQUARK,
-	iso8859_7_mbtowc, iso8859_7_wctomb
-    },
-    { "ISO8859-8", NULLQUARK,
-	iso8859_8_mbtowc, iso8859_8_wctomb
-    },
-    { "ISO8859-9", NULLQUARK,
-	iso8859_9_mbtowc, iso8859_9_wctomb
-    },
-    { "ISO8859-10", NULLQUARK,
-	iso8859_10_mbtowc, iso8859_10_wctomb
-    },
-    { "ISO8859-11", NULLQUARK,
-	iso8859_11_mbtowc, iso8859_11_wctomb
-    },
-    { "ISO8859-13", NULLQUARK,
-	iso8859_13_mbtowc, iso8859_13_wctomb
-    },
-    { "ISO8859-14", NULLQUARK,
-	iso8859_14_mbtowc, iso8859_14_wctomb
-    },
-    { "ISO8859-15", NULLQUARK,
-	iso8859_15_mbtowc, iso8859_15_wctomb
-    },
-    { "ISO8859-16", NULLQUARK,
-	iso8859_16_mbtowc, iso8859_16_wctomb
-    },
-    { "JISX0201.1976-0", NULLQUARK,
-	jisx0201_mbtowc, jisx0201_wctomb
-    },
-    { "TIS620-0", NULLQUARK,
-	tis620_mbtowc, tis620_wctomb
-    },
-    { "GB2312.1980-0", NULLQUARK,
-	gb2312_mbtowc, gb2312_wctomb
-    },
-    { "JISX0208.1983-0", NULLQUARK,
-	jisx0208_mbtowc, jisx0208_wctomb
-    },
-    { "JISX0208.1990-0", NULLQUARK,
-	jisx0208_mbtowc, jisx0208_wctomb
-    },
-    { "JISX0212.1990-0", NULLQUARK,
-	jisx0212_mbtowc, jisx0212_wctomb
-    },
-    { "KSC5601.1987-0", NULLQUARK,
-	ksc5601_mbtowc, ksc5601_wctomb
-    },
-    { "KOI8-R", NULLQUARK,
-	koi8_r_mbtowc, koi8_r_wctomb
-    },
-    { "KOI8-U", NULLQUARK,
-	koi8_u_mbtowc, koi8_u_wctomb
-    },
-    { "KOI8-C", NULLQUARK,
-	koi8_c_mbtowc, koi8_c_wctomb
-    },
-    { "TATAR-CYR", NULLQUARK,
-	tatar_cyr_mbtowc, tatar_cyr_wctomb
-    },
-    { "ARMSCII-8", NULLQUARK,
-	armscii_8_mbtowc, armscii_8_wctomb
-    },
-    { "IBM-CP1133", NULLQUARK,
-	cp1133_mbtowc, cp1133_wctomb
-    },
-    { "MULELAO-1", NULLQUARK,
-	mulelao_mbtowc, mulelao_wctomb
-    },
-    { "VISCII1.1-1", NULLQUARK,
-	viscii_mbtowc, viscii_wctomb
-    },
-    { "TCVN-5712", NULLQUARK,
-	tcvn_mbtowc, tcvn_wctomb
-    },
-    { "GEORGIAN-ACADEMY", NULLQUARK,
-	georgian_academy_mbtowc, georgian_academy_wctomb
-    },
-    { "GEORGIAN-PS", NULLQUARK,
-	georgian_ps_mbtowc, georgian_ps_wctomb
-    },
-    { "ISO8859-9E", NULLQUARK,
-	iso8859_9e_mbtowc, iso8859_9e_wctomb
-    },
-    { "MICROSOFT-CP1251", NULLQUARK,
-	cp1251_mbtowc, cp1251_wctomb
-    },
-    { "MICROSOFT-CP1255", NULLQUARK,
-	cp1255_mbtowc, cp1255_wctomb
-    },
-    { "MICROSOFT-CP1256", NULLQUARK,
-	cp1256_mbtowc, cp1256_wctomb
-    },
-    { "BIG5-0", NULLQUARK,
-	big5_mbtowc, big5_wctomb
-    },
-    { "BIG5-E0", NULLQUARK,
-	big5_0_mbtowc, big5_0_wctomb
-    },
-    { "BIG5-E1", NULLQUARK,
-	big5_1_mbtowc, big5_1_wctomb
-    },
-    { "GBK-0", NULLQUARK,
-	gbk_mbtowc, gbk_wctomb
-    },
-    { "BIG5HKSCS-0", NULLQUARK,
-	big5hkscs_mbtowc, big5hkscs_wctomb
-    },
-
-    /* The ISO10646-1/UTF-8 entry occurs twice, once at the beginning
-       (for lookup speed), once at the end (as a fallback).  */
-    { "ISO10646-1", NULLQUARK,
-	utf8_mbtowc, utf8_wctomb
-    },
-
-    /* Encoding ISO10646-1 for fonts means UCS2-like encoding
-       so for conversion to FontCharSet we need this record */
-    { "ISO10646-1", NULLQUARK,
-	ucs2be_mbtowc, ucs2be_wctomb
-    }
-};
-
-#define charsets_table_size (sizeof(all_charsets)/sizeof(all_charsets[0]))
-#define all_charsets_count  (charsets_table_size - 1)
-#define ucs2_conv_index     (charsets_table_size - 1)
-
-static void
-init_all_charsets (void)
-{
-    Utf8Conv convptr;
-    int i;
-
-    for (convptr = all_charsets, i = charsets_table_size; i > 0; convptr++, i--)
-	convptr->xrm_name = XrmStringToQuark(convptr->name);
-}
-
-#define lazy_init_all_charsets()					\
-    do {								\
-	if (all_charsets[0].xrm_name == NULLQUARK)			\
-	    init_all_charsets();					\
-    } while (0)
-
-/* from XlcNCharSet to XlcNUtf8String */
-
-static int
-cstoutf8(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    XlcCharSet charset;
-    const char *name;
-    Utf8Conv convptr;
-    int i;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    if (num_args < 1)
-	return -1;
-
-    charset = (XlcCharSet) args[0];
-    name = charset->encoding_name;
-    /* not charset->name because the latter has a ":GL"/":GR" suffix */
-
-    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)
-	if (!strcmp(convptr->name, name))
-	    break;
-    if (i == 0)
-	return -1;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend) {
-	ucs4_t wc;
-	int consumed;
-	int count;
-
-	consumed = convptr->cstowc(conv, &wc, src, srcend-src);
-	if (consumed == RET_ILSEQ)
-	    return -1;
-	if (consumed == RET_TOOFEW(0))
-	    break;
-
-	count = utf8_wctomb(NULL, dst, wc, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    count = utf8_wctomb(NULL, dst, BAD_WCHAR, dstend-dst);
-	    if (count == RET_TOOSMALL)
-		break;
-	    unconv_num++;
-	}
-	src += consumed;
-	dst += count;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_cstoutf8 = {
-    close_converter,
-    cstoutf8,
-    NULL
-};
-
-static XlcConv
-open_cstoutf8(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    lazy_init_all_charsets();
-    return create_conv(from_lcd, &methods_cstoutf8);
-}
-
-/* from XlcNUtf8String to XlcNCharSet */
-
-static XlcConv
-create_tocs_conv(
-    XLCd lcd,
-    XlcConvMethods methods)
-{
-    XlcConv conv;
-    CodeSet *codeset_list;
-    int codeset_num;
-    int charset_num;
-    int i, j, k;
-    Utf8Conv *preferred;
-
-    lazy_init_all_charsets();
-
-    codeset_list = XLC_GENERIC(lcd, codeset_list);
-    codeset_num = XLC_GENERIC(lcd, codeset_num);
-
-    charset_num = 0;
-    for (i = 0; i < codeset_num; i++)
-	charset_num += codeset_list[i]->num_charsets;
-    if (charset_num > all_charsets_count-1)
-	charset_num = all_charsets_count-1;
-
-    conv = (XlcConv) Xmalloc(sizeof(XlcConvRec)
-			     + (charset_num + 1) * sizeof(Utf8Conv));
-    if (conv == (XlcConv) NULL)
-	return (XlcConv) NULL;
-    preferred = (Utf8Conv *) ((char *) conv + sizeof(XlcConvRec));
-
-    /* Loop through all codesets mentioned in the locale. */
-    charset_num = 0;
-    for (i = 0; i < codeset_num; i++) {
-	XlcCharSet *charsets = codeset_list[i]->charset_list;
-	int num_charsets = codeset_list[i]->num_charsets;
-	for (j = 0; j < num_charsets; j++) {
-	    const char *name = charsets[j]->encoding_name;
-	    /* If it wasn't already encountered... */
-	    for (k = charset_num-1; k >= 0; k--)
-		if (!strcmp(preferred[k]->name, name))
-		    break;
-	    if (k < 0) {
-		/* Look it up in all_charsets[]. */
-		for (k = 0; k < all_charsets_count-1; k++)
-		    if (!strcmp(all_charsets[k].name, name)) {
-			/* Add it to the preferred set. */
-			preferred[charset_num++] = &all_charsets[k];
-			break;
-		    }
-	    }
-	}
-    }
-    preferred[charset_num] = (Utf8Conv) NULL;
-
-    conv->methods = methods;
-    conv->state = (XPointer) preferred;
-
-    return conv;
-}
-
-static void
-close_tocs_converter(
-    XlcConv conv)
-{
-    /* conv->state is allocated together with conv, free both at once.  */
-    Xfree((char *) conv);
-}
-
-/*
- * Converts a Unicode character to an appropriate character set. The NULL
- * terminated array of preferred character sets is passed as first argument.
- * If successful, *charsetp is set to the character set that was used, and
- * *sidep is set to the character set side (XlcGL or XlcGR).
- */
-static int
-charset_wctocs(
-    Utf8Conv *preferred,
-    Utf8Conv *charsetp,
-    XlcSide *sidep,
-    XlcConv conv,
-    unsigned char *r,
-    ucs4_t wc,
-    int n)
-{
-    int count;
-    Utf8Conv convptr;
-    int i;
-
-    for (; *preferred != (Utf8Conv) NULL; preferred++) {
-	convptr = *preferred;
-	count = convptr->wctocs(conv, r, wc, n);
-	if (count == RET_TOOSMALL)
-	    return RET_TOOSMALL;
-	if (count != RET_ILSEQ) {
-	    *charsetp = convptr;
-	    *sidep = (*r < 0x80 ? XlcGL : XlcGR);
-	    return count;
-	}
-    }
-    for (convptr = all_charsets+1, i = all_charsets_count-1; i > 0; convptr++, i--) {
-	count = convptr->wctocs(conv, r, wc, n);
-	if (count == RET_TOOSMALL)
-	    return RET_TOOSMALL;
-	if (count != RET_ILSEQ) {
-	    *charsetp = convptr;
-	    *sidep = (*r < 0x80 ? XlcGL : XlcGR);
-	    return count;
-	}
-    }
-    return RET_ILSEQ;
-}
-
-static int
-utf8tocs(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    Utf8Conv *preferred_charsets;
-    XlcCharSet last_charset = NULL;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    preferred_charsets = (Utf8Conv *) conv->state;
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	Utf8Conv chosen_charset = NULL;
-	XlcSide chosen_side = XlcNONE;
-	ucs4_t wc;
-	int consumed;
-	int count;
-
-	consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);
-	if (consumed == RET_TOOFEW(0))
-	    break;
-	if (consumed == RET_ILSEQ) {
-	    src++;
-	    unconv_num++;
-	    continue;
-	}
-
-	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    src += consumed;
-	    unconv_num++;
-	    continue;
-	}
-
-	if (last_charset == NULL) {
-	    last_charset =
-	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-	    if (last_charset == NULL) {
-		src += consumed;
-		unconv_num++;
-		continue;
-	    }
-	} else {
-	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name
-	          && (last_charset->side == XlcGLGR
-	              || last_charset->side == chosen_side)))
-		break;
-	}
-	src += consumed;
-	dst += count;
-    }
-
-    if (last_charset == NULL)
-	return -1;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = last_charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_utf8tocs = {
-    close_tocs_converter,
-    utf8tocs,
-    NULL
-};
-
-static XlcConv
-open_utf8tocs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tocs_conv(from_lcd, &methods_utf8tocs);
-}
-
-/* from XlcNUtf8String to XlcNChar */
-
-static int
-utf8tocs1(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    Utf8Conv *preferred_charsets;
-    XlcCharSet last_charset = NULL;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    preferred_charsets = (Utf8Conv *) conv->state;
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	Utf8Conv chosen_charset = NULL;
-	XlcSide chosen_side = XlcNONE;
-	ucs4_t wc;
-	int consumed;
-	int count;
-
-	consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);
-	if (consumed == RET_TOOFEW(0))
-	    break;
-	if (consumed == RET_ILSEQ) {
-	    src++;
-	    unconv_num++;
-	    continue;
-	}
-
-	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    src += consumed;
-	    unconv_num++;
-	    continue;
-	}
-
-	if (last_charset == NULL) {
-	    last_charset =
-	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-	    if (last_charset == NULL) {
-		src += consumed;
-		unconv_num++;
-		continue;
-	    }
-	} else {
-	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name
-	          && (last_charset->side == XlcGLGR
-	              || last_charset->side == chosen_side)))
-		break;
-	}
-	src += consumed;
-	dst += count;
-	break;
-    }
-
-    if (last_charset == NULL)
-	return -1;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = last_charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_utf8tocs1 = {
-    close_tocs_converter,
-    utf8tocs1,
-    NULL
-};
-
-static XlcConv
-open_utf8tocs1(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tocs_conv(from_lcd, &methods_utf8tocs1);
-}
-
-/* from XlcNUtf8String to XlcNString */
-
-static int
-utf8tostr(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend) {
-	unsigned char c;
-	ucs4_t wc;
-	int consumed;
-
-	consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);
-	if (consumed == RET_TOOFEW(0))
-	    break;
-	if (dst == dstend)
-	    break;
-	if (consumed == RET_ILSEQ) {
-	    consumed = 1;
-	    c = BAD_CHAR;
-	    unconv_num++;
-	} else {
-	    if ((wc & ~(ucs4_t)0xff) != 0) {
-		c = BAD_CHAR;
-		unconv_num++;
-	    } else
-		c = (unsigned char) wc;
-	}
-	*dst++ = c;
-	src += consumed;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_utf8tostr = {
-    close_converter,
-    utf8tostr,
-    NULL
-};
-
-static XlcConv
-open_utf8tostr(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_utf8tostr);
-}
-
-/* from XlcNString to XlcNUtf8String */
-
-static int
-strtoutf8(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-
-    while (src < srcend) {
-	int count = utf8_wctomb(NULL, dst, *src, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	dst += count;
-	src++;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return 0;
-}
-
-static XlcConvMethodsRec methods_strtoutf8 = {
-    close_converter,
-    strtoutf8,
-    NULL
-};
-
-static XlcConv
-open_strtoutf8(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_strtoutf8);
-}
-
-/* Support for the input methods. */
-
-XPointer
-_Utf8GetConvByName(
-    const char *name)
-{
-    XrmQuark xrm_name;
-    Utf8Conv convptr;
-    int i;
-
-    if (name == NULL)
-        return (XPointer) NULL;
-
-    lazy_init_all_charsets();
-    xrm_name = XrmStringToQuark(name);
-
-    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)
-	if (convptr->xrm_name == xrm_name)
-	    return (XPointer) convptr->wctocs;
-    return (XPointer) NULL;
-}
-
-/* from XlcNUcsChar to XlcNChar, needed for input methods */
-
-static XlcConv
-create_ucstocs_conv(
-    XLCd lcd,
-    XlcConvMethods methods)
-{
-
-    if (XLC_PUBLIC_PART(lcd)->codeset
-	&& _XlcCompareISOLatin1(XLC_PUBLIC_PART(lcd)->codeset, "UTF-8") == 0) {
-	XlcConv conv;
-	Utf8Conv *preferred;
-
-	lazy_init_all_charsets();
-
-	conv = (XlcConv) Xmalloc(sizeof(XlcConvRec) + 2 * sizeof(Utf8Conv));
-	if (conv == (XlcConv) NULL)
-	    return (XlcConv) NULL;
-	preferred = (Utf8Conv *) ((char *) conv + sizeof(XlcConvRec));
-
-	preferred[0] = &all_charsets[0]; /* ISO10646 */
-	preferred[1] = (Utf8Conv) NULL;
-
-	conv->methods = methods;
-	conv->state = (XPointer) preferred;
-
-	return conv;
-    } else {
-	return create_tocs_conv(lcd, methods);
-    }
-}
-
-static int
-charset_wctocs_exactly(
-    Utf8Conv *preferred,
-    Utf8Conv *charsetp,
-    XlcSide *sidep,
-    XlcConv conv,
-    unsigned char *r,
-    ucs4_t wc,
-    int n)
-{
-    int count;
-    Utf8Conv convptr;
-
-    for (; *preferred != (Utf8Conv) NULL; preferred++) {
-	convptr = *preferred;
-	count = convptr->wctocs(conv, r, wc, n);
-	if (count == RET_TOOSMALL)
-	    return RET_TOOSMALL;
-	if (count != RET_ILSEQ) {
-	    *charsetp = convptr;
-	    *sidep = (*r < 0x80 ? XlcGL : XlcGR);
-	    return count;
-	}
-    }
-    return RET_ILSEQ;
-}
-
-static int
-ucstocs1(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    ucs4_t const *src = (ucs4_t const *) *from;
-    unsigned char *dst = (unsigned char *) *to;
-    int unconv_num = 0;
-    Utf8Conv *preferred_charsets = (Utf8Conv *) conv->state;
-    Utf8Conv chosen_charset = NULL;
-    XlcSide chosen_side = XlcNONE;
-    XlcCharSet charset = NULL;
-    int count;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    count = charset_wctocs_exactly(preferred_charsets, &chosen_charset,
-                                   &chosen_side, conv, dst, *src, *to_left);
-    if (count < 1) {
-        unconv_num++;
-        count = 0;
-    } else {
-        charset = _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-    }
-    if (charset == NULL)
-	return -1;
-
-    *from = (XPointer) ++src;
-    (*from_left)--;
-    *to = (XPointer) dst;
-    *to_left -= count;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_ucstocs1 = {
-    close_tocs_converter,
-    ucstocs1,
-    NULL
-};
-
-static XlcConv
-open_ucstocs1(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_ucstocs_conv(from_lcd, &methods_ucstocs1);
-}
-
-/* from XlcNUcsChar to XlcNUtf8String, needed for input methods */
-
-static int
-ucstoutf8(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    const ucs4_t *src;
-    const ucs4_t *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (const ucs4_t *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend) {
-	int count = utf8_wctomb(NULL, dst, *src, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ)
-	    unconv_num++;
-	src++;
-	dst += count;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_ucstoutf8 = {
-    close_converter,
-    ucstoutf8,
-    NULL
-};
-
-static XlcConv
-open_ucstoutf8(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_ucstoutf8);
-}
-
-/* Registers UTF-8 converters for a non-UTF-8 locale. */
-void
-_XlcAddUtf8Converters(
-    XLCd lcd)
-{
-    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNUtf8String, open_cstoutf8);
-    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNCharSet, open_utf8tocs);
-    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNChar, open_utf8tocs1);
-    _XlcSetConverter(lcd, XlcNString, lcd, XlcNUtf8String, open_strtoutf8);
-    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNString, open_utf8tostr);
-    _XlcSetConverter(lcd, XlcNUcsChar,    lcd, XlcNChar, open_ucstocs1);
-    _XlcSetConverter(lcd, XlcNUcsChar,    lcd, XlcNUtf8String, open_ucstoutf8);
-}
-
-/***************************************************************************/
-/* Part II: UTF-8 locale loader conversion files
- *
- * Here we can assume that "multi-byte" is UTF-8 and that `wchar_t' is Unicode.
- */
-
-/* from XlcNMultiByte to XlcNWideChar */
-
-static int
-utf8towcs(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    wchar_t *dst;
-    wchar_t *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (wchar_t *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	ucs4_t wc;
-	int consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);
-	if (consumed == RET_TOOFEW(0))
-	    break;
-	if (consumed == RET_ILSEQ) {
-	    src++;
-	    *dst = BAD_WCHAR;
-	    unconv_num++;
-	} else {
-	    src += consumed;
-	    *dst = wc;
-	}
-	dst++;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_utf8towcs = {
-    close_converter,
-    utf8towcs,
-    NULL
-};
-
-static XlcConv
-open_utf8towcs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_utf8towcs);
-}
-
-/* from XlcNWideChar to XlcNMultiByte */
-
-static int
-wcstoutf8(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    wchar_t const *src;
-    wchar_t const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (wchar_t const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend) {
-	int count = utf8_wctomb(NULL, dst, *src, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    count = utf8_wctomb(NULL, dst, BAD_WCHAR, dstend-dst);
-	    if (count == RET_TOOSMALL)
-		break;
-	    unconv_num++;
-	}
-	dst += count;
-	src++;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_wcstoutf8 = {
-    close_converter,
-    wcstoutf8,
-    NULL
-};
-
-static XlcConv
-open_wcstoutf8(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_wcstoutf8);
-}
-
-/* from XlcNString to XlcNWideChar */
-
-static int
-our_strtowcs(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    wchar_t *dst;
-    wchar_t *dstend;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (wchar_t *) *to;
-    dstend = dst + *to_left;
-
-    while (src < srcend && dst < dstend)
-	*dst++ = (wchar_t) *src++;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return 0;
-}
-
-static XlcConvMethodsRec methods_strtowcs = {
-    close_converter,
-    our_strtowcs,
-    NULL
-};
-
-static XlcConv
-open_strtowcs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_strtowcs);
-}
-
-/* from XlcNWideChar to XlcNString */
-
-static int
-our_wcstostr(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    wchar_t const *src;
-    wchar_t const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (wchar_t const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	unsigned int wc = *src++;
-	if (wc < 0x80)
-	    *dst = wc;
-	else {
-	    *dst = BAD_CHAR;
-	    unconv_num++;
-	}
-	dst++;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_wcstostr = {
-    close_converter,
-    our_wcstostr,
-    NULL
-};
-
-static XlcConv
-open_wcstostr(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_wcstostr);
-}
-
-/* from XlcNCharSet to XlcNWideChar */
-
-static int
-cstowcs(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    XlcCharSet charset;
-    const char *name;
-    Utf8Conv convptr;
-    int i;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    wchar_t *dst;
-    wchar_t *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    if (num_args < 1)
-	return -1;
-
-    charset = (XlcCharSet) args[0];
-    name = charset->encoding_name;
-    /* not charset->name because the latter has a ":GL"/":GR" suffix */
-
-    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)
-	if (!strcmp(convptr->name, name))
-	    break;
-    if (i == 0)
-	return -1;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (wchar_t *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	unsigned int wc;
-	int consumed;
-
-	consumed = convptr->cstowc(conv, &wc, src, srcend-src);
-	if (consumed == RET_ILSEQ)
-	    return -1;
-	if (consumed == RET_TOOFEW(0))
-	    break;
-
-	*dst++ = wc;
-	src += consumed;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_cstowcs = {
-    close_converter,
-    cstowcs,
-    NULL
-};
-
-static XlcConv
-open_cstowcs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    lazy_init_all_charsets();
-    return create_conv(from_lcd, &methods_cstowcs);
-}
-
-/* from XlcNWideChar to XlcNCharSet */
-
-static int
-wcstocs(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    Utf8Conv *preferred_charsets;
-    XlcCharSet last_charset = NULL;
-    wchar_t const *src;
-    wchar_t const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    preferred_charsets = (Utf8Conv *) conv->state;
-    src = (wchar_t const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	Utf8Conv chosen_charset = NULL;
-	XlcSide chosen_side = XlcNONE;
-	wchar_t wc = *src;
-	int count;
-
-	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    src++;
-	    unconv_num++;
-	    continue;
-	}
-
-	if (last_charset == NULL) {
-	    last_charset =
-	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-	    if (last_charset == NULL) {
-		src++;
-		unconv_num++;
-		continue;
-	    }
-	} else {
-	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name
-	          && (last_charset->side == XlcGLGR
-	              || last_charset->side == chosen_side)))
-		break;
-	}
-	src++;
-	dst += count;
-    }
-
-    if (last_charset == NULL)
-	return -1;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = last_charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_wcstocs = {
-    close_tocs_converter,
-    wcstocs,
-    NULL
-};
-
-static XlcConv
-open_wcstocs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tocs_conv(from_lcd, &methods_wcstocs);
-}
-
-/* from XlcNWideChar to XlcNChar */
-
-static int
-wcstocs1(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    Utf8Conv *preferred_charsets;
-    XlcCharSet last_charset = NULL;
-    wchar_t const *src;
-    wchar_t const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    preferred_charsets = (Utf8Conv *) conv->state;
-    src = (wchar_t const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	Utf8Conv chosen_charset = NULL;
-	XlcSide chosen_side = XlcNONE;
-	wchar_t wc = *src;
-	int count;
-
-	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    src++;
-	    unconv_num++;
-	    continue;
-	}
-
-	if (last_charset == NULL) {
-	    last_charset =
-	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-	    if (last_charset == NULL) {
-		src++;
-		unconv_num++;
-		continue;
-	    }
-	} else {
-	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name
-	          && (last_charset->side == XlcGLGR
-	              || last_charset->side == chosen_side)))
-		break;
-	}
-	src++;
-	dst += count;
-	break;
-    }
-
-    if (last_charset == NULL)
-	return -1;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = last_charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec methods_wcstocs1 = {
-    close_tocs_converter,
-    wcstocs1,
-    NULL
-};
-
-static XlcConv
-open_wcstocs1(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tocs_conv(from_lcd, &methods_wcstocs1);
-}
-
-/* trivial, no conversion */
-
-static int
-identity(
-    XlcConv conv,
-    XPointer *from,
-    int *from_left,
-    XPointer *to,
-    int *to_left,
-    XPointer *args,
-    int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-
-    while (src < srcend && dst < dstend)
-	*dst++ = *src++;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return 0;
-}
-
-static XlcConvMethodsRec methods_identity = {
-    close_converter,
-    identity,
-    NULL
-};
-
-static XlcConv
-open_identity(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_conv(from_lcd, &methods_identity);
-}
-
-/* from MultiByte/WideChar to FontCharSet. */
-/* They really use converters to CharSet
- * but with different create_conv procedure. */
-
-static XlcConv
-create_tofontcs_conv(
-    XLCd lcd,
-    XlcConvMethods methods)
-{
-    XlcConv conv;
-    int i, num, k, count;
-    char **value, buf[20];
-    Utf8Conv *preferred;
-
-    lazy_init_all_charsets();
-
-    for (i = 0, num = 0;; i++) {
-	sprintf(buf, "fs%d.charset.name", i);
-	_XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);
-	if (count < 1) {
-	    sprintf(buf, "fs%d.charset", i);
-	    _XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);
-	    if (count < 1)
-		break;
-	}
-	num += count;
-    }
-
-    conv = (XlcConv) Xmalloc(sizeof(XlcConvRec) + (num + 1) * sizeof(Utf8Conv));
-    if (conv == (XlcConv) NULL)
-	return (XlcConv) NULL;
-    preferred = (Utf8Conv *) ((char *) conv + sizeof(XlcConvRec));
-
-    /* Loop through all fontsets mentioned in the locale. */
-    for (i = 0, num = 0;; i++) {
-        sprintf(buf, "fs%d.charset.name", i);
-        _XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);
-        if (count < 1) {
-            sprintf(buf, "fs%d.charset", i);
-            _XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);
-            if (count < 1)
-                break;
-        }
-	while (count-- > 0) {
-	    XlcCharSet charset = _XlcGetCharSet(*value++);
-	    const char *name;
-
-	    if (charset == (XlcCharSet) NULL)
-		continue;
-
-	    name = charset->encoding_name;
-	    /* If it wasn't already encountered... */
-	    for (k = num - 1; k >= 0; k--)
-		if (!strcmp(preferred[k]->name, name))
-		    break;
-	    if (k < 0) {
-                /* For fonts "ISO10646-1" means ucs2, not utf8.*/
-                if (!strcmp("ISO10646-1", name)) {
-                    preferred[num++] = &all_charsets[ucs2_conv_index];
-                    continue;
-                }
-		/* Look it up in all_charsets[]. */
-		for (k = 0; k < all_charsets_count-1; k++)
-		    if (!strcmp(all_charsets[k].name, name)) {
-			/* Add it to the preferred set. */
-			preferred[num++] = &all_charsets[k];
-			break;
-		    }
-	    }
-        }
-    }
-    preferred[num] = (Utf8Conv) NULL;
-
-    conv->methods = methods;
-    conv->state = (XPointer) preferred;
-
-    return conv;
-}
-
-static XlcConv
-open_wcstofcs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tofontcs_conv(from_lcd, &methods_wcstocs);
-}
-
-static XlcConv
-open_utf8tofcs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tofontcs_conv(from_lcd, &methods_utf8tocs);
-}
-
-/* ========================== iconv Stuff ================================ */
-
-/* from XlcNCharSet to XlcNMultiByte */
-
-static int
-iconv_cstombs(XlcConv conv, XPointer *from, int *from_left,
-	      XPointer *to, int *to_left, XPointer *args, int num_args)
-{
-    XlcCharSet charset;
-    const char *name;
-    Utf8Conv convptr;
-    int i;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    if (num_args < 1)
-	return -1;
-
-    charset = (XlcCharSet) args[0];
-    name = charset->encoding_name;
-    /* not charset->name because the latter has a ":GL"/":GR" suffix */
-
-    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)
-	if (!strcmp(convptr->name, name))
-	    break;
-    if (i == 0)
-	return -1;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend) {
-	ucs4_t wc;
-	int consumed;
-	int count;
-
-	consumed = convptr->cstowc(conv, &wc, src, srcend-src);
-	if (consumed == RET_ILSEQ)
-	    return -1;
-	if (consumed == RET_TOOFEW(0))
-	    break;
-
-    /* Use stdc iconv to convert widechar -> multibyte */
-
-	count = wctomb(dst, wc);
-	if (count == 0)
-	    break;
-	if (count == -1) {
-	    count = wctomb(dst, BAD_WCHAR);
-	    if (count == 0)
-		break;
-	    unconv_num++;
-	}
-	src += consumed;
-	dst += count;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-
-}
-
-static XlcConvMethodsRec iconv_cstombs_methods = {
-    close_converter,
-    iconv_cstombs,
-    NULL
-};
-
-static XlcConv
-open_iconv_cstombs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    lazy_init_all_charsets();
-    return create_conv(from_lcd, &iconv_cstombs_methods);
-}
-
-static int
-iconv_mbstocs(XlcConv conv, XPointer *from, int *from_left,
-	      XPointer *to, int *to_left, XPointer *args, int num_args)
-{
-    Utf8Conv *preferred_charsets;
-    XlcCharSet last_charset = NULL;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    preferred_charsets = (Utf8Conv *) conv->state;
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	Utf8Conv chosen_charset = NULL;
-	XlcSide chosen_side = XlcNONE;
-	wchar_t wc;
-	int consumed;
-	int count;
-
-    /* Uses stdc iconv to convert multibyte -> widechar */
-
-	consumed = mbtowc(&wc, src, srcend-src);
-	if (consumed == 0)
-	    break;
-	if (consumed == -1) {
-	    src++;
-	    unconv_num++;
-	    continue;
-	}
-
-	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);
-
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    src += consumed;
-	    unconv_num++;
-	    continue;
-	}
-
-	if (last_charset == NULL) {
-	    last_charset =
-	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-	    if (last_charset == NULL) {
-		src += consumed;
-		unconv_num++;
-		continue;
-	    }
-	} else {
-	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name
-	          && (last_charset->side == XlcGLGR
-	              || last_charset->side == chosen_side)))
-		break;
-	}
-	src += consumed;
-	dst += count;
-    }
-
-    if (last_charset == NULL)
-	return -1;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = last_charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec iconv_mbstocs_methods = {
-    close_tocs_converter,
-    iconv_mbstocs,
-    NULL
-};
-
-static XlcConv
-open_iconv_mbstocs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    return create_tocs_conv(from_lcd, &iconv_mbstocs_methods);
-}
-
-/* from XlcNMultiByte to XlcNChar */
-
-static int
-iconv_mbtocs(XlcConv conv, XPointer *from, int *from_left,
-	     XPointer *to, int *to_left, XPointer *args, int num_args)
-{
-    Utf8Conv *preferred_charsets;
-    XlcCharSet last_charset = NULL;
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    preferred_charsets = (Utf8Conv *) conv->state;
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend && dst < dstend) {
-	Utf8Conv chosen_charset = NULL;
-	XlcSide chosen_side = XlcNONE;
-	wchar_t wc;
-	int consumed;
-	int count;
-
-    /* Uses stdc iconv to convert multibyte -> widechar */
-
-	consumed = mbtowc(&wc, src, srcend-src);
-	if (consumed == 0)
-	    break;
-	if (consumed == -1) {
-	    src++;
-	    unconv_num++;
-	    continue;
-	}
-
-	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);
-	if (count == RET_TOOSMALL)
-	    break;
-	if (count == RET_ILSEQ) {
-	    src += consumed;
-	    unconv_num++;
-	    continue;
-	}
-
-	if (last_charset == NULL) {
-	    last_charset =
-		_XlcGetCharSetWithSide(chosen_charset->name, chosen_side);
-	    if (last_charset == NULL) {
-		src += consumed;
-		unconv_num++;
-		continue;
-	    }
-	} else {
-	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name
-		  && (last_charset->side == XlcGLGR
-		      || last_charset->side == chosen_side)))
-		break;
-	}
-	src += consumed;
-	dst += count;
-    }
-
-    if (last_charset == NULL)
-	return -1;
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    if (num_args >= 1)
-	*((XlcCharSet *)args[0]) = last_charset;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec iconv_mbtocs_methods = {
-    close_tocs_converter,
-    iconv_mbtocs,
-    NULL
-};
-
-static XlcConv
-open_iconv_mbtocs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    return create_tocs_conv(from_lcd, &iconv_mbtocs_methods );
-}
-
-/* from XlcNMultiByte to XlcNString */
-
-static int
-iconv_mbstostr(XlcConv conv, XPointer *from, int *from_left,
-	       XPointer *to, int *to_left, XPointer *args, int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-    int unconv_num;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-    unconv_num = 0;
-
-    while (src < srcend) {
-	unsigned char c;
-	wchar_t wc;
-	int consumed;
-
-    /* Uses stdc iconv to convert multibyte -> widechar */
-
-	consumed = mbtowc(&wc, src, srcend-src);
-	if (consumed == 0)
-	    break;
-	if (dst == dstend)
-	    break;
-	if (consumed == -1) {
-	    consumed = 1;
-	    c = BAD_CHAR;
-	    unconv_num++;
-	} else {
-	    if ((wc & ~(wchar_t)0xff) != 0) {
-		c = BAD_CHAR;
-		unconv_num++;
-	    } else
-		c = (unsigned char) wc;
-	}
-	*dst++ = c;
-	src += consumed;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec iconv_mbstostr_methods = {
-    close_converter,
-    iconv_mbstostr,
-    NULL
-};
-
-static XlcConv
-open_iconv_mbstostr(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    return create_conv(from_lcd, &iconv_mbstostr_methods);
-}
-
-/* from XlcNString to XlcNMultiByte */
-static int
-iconv_strtombs(XlcConv conv, XPointer *from, int *from_left,
-	       XPointer *to, int *to_left, XPointer *args, int num_args)
-{
-    unsigned char const *src;
-    unsigned char const *srcend;
-    unsigned char *dst;
-    unsigned char *dstend;
-
-    if (from == NULL || *from == NULL)
-	return 0;
-
-    src = (unsigned char const *) *from;
-    srcend = src + *from_left;
-    dst = (unsigned char *) *to;
-    dstend = dst + *to_left;
-
-    while (src < srcend) {
-	int count = wctomb(dst, *src);
-	if (count < 0)
-	    break;
-	dst += count;
-	src++;
-    }
-
-    *from = (XPointer) src;
-    *from_left = srcend - src;
-    *to = (XPointer) dst;
-    *to_left = dstend - dst;
-
-    return 0;
-}
-
-static XlcConvMethodsRec iconv_strtombs_methods= {
-    close_converter,
-    iconv_strtombs,
-    NULL
-};
-
-static XlcConv
-open_iconv_strtombs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    return create_conv(from_lcd, &iconv_strtombs_methods);
-}
-
-/***************************************************************************/
-/* Part II: An iconv locale loader.
- *
- *Here we can assume that "multi-byte" is iconv and that `wchar_t' is Unicode.
- */
-
-/* from XlcNMultiByte to XlcNWideChar */
-static int
-iconv_mbstowcs(XlcConv conv, XPointer *from, int *from_left,
-	       XPointer *to, int *to_left, XPointer *args,  int num_args)
-{
-    char *src = *((char **) from);
-    wchar_t *dst = *((wchar_t **) to);
-    int src_left = *from_left;
-    int dst_left = *to_left;
-    int length, unconv_num = 0;
-
-    while (src_left > 0 && dst_left > 0) {
-	length = mbtowc(dst, src, src_left);
-
-	if (length > 0) {
-	    src += length;
-	    src_left -= length;
-	    if (dst)
-	        dst++;
-	    dst_left--;
-	} else if (length < 0) {
-	    src++;
-	    src_left--;
-	    unconv_num++;
-        } else {
-            /* null ? */
-            src++;
-            src_left--;
-            if (dst) 
-                *dst++ = L'\0';
-            dst_left--;
-        }
-    }
-
-    *from = (XPointer) src;
-    if (dst)
-	*to = (XPointer) dst;
-    *from_left = src_left;
-    *to_left = dst_left;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec iconv_mbstowcs_methods = {
-    close_converter,
-    iconv_mbstowcs,
-    NULL
-} ;
-
-static XlcConv
-open_iconv_mbstowcs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    return create_conv(from_lcd, &iconv_mbstowcs_methods);
-}
-
-static int
-iconv_wcstombs(XlcConv conv, XPointer *from, int *from_left,
-	       XPointer *to, int *to_left, XPointer *args, int num_args)
-{
-    wchar_t *src = *((wchar_t **) from);
-    char *dst = *((char **) to);
-    int src_left = *from_left;
-    int dst_left = *to_left;
-    int length, unconv_num = 0;
-
-    while (src_left > 0 && dst_left >= MB_CUR_MAX) { 
-	length = wctomb(dst, *src);		/* XXX */
-
-        if (length > 0) {
-	    src++;
-	    src_left--;
-	    if (dst) 
-		dst += length;
-	    dst_left -= length;
-	} else if (length < 0) {
-	    src++;
-	    src_left--;
-	    unconv_num++;
-	} 
-    }
-
-    *from = (XPointer) src;
-    if (dst)
-      *to = (XPointer) dst;
-    *from_left = src_left;
-    *to_left = dst_left;
-
-    return unconv_num;
-}
-
-static XlcConvMethodsRec iconv_wcstombs_methods = {
-    close_converter,
-    iconv_wcstombs,
-    NULL
-} ;
-
-static XlcConv
-open_iconv_wcstombs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)
-{
-    return create_conv(from_lcd, &iconv_wcstombs_methods);
-}
-
-static XlcConv
-open_iconv_mbstofcs(
-    XLCd from_lcd,
-    const char *from_type,
-    XLCd to_lcd,
-    const char *to_type)
-{
-    return create_tofontcs_conv(from_lcd, &iconv_mbstocs_methods);
-}
-
-/* Registers UTF-8 converters for a UTF-8 locale. */
-
-void
-_XlcAddUtf8LocaleConverters(
-    XLCd lcd)
-{
-    /* Register elementary converters. */
-
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar, open_utf8towcs);
-
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNMultiByte, open_wcstoutf8);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNString, open_wcstostr);
-
-    _XlcSetConverter(lcd, XlcNString, lcd, XlcNWideChar, open_strtowcs);
-
-    /* Register converters for XlcNCharSet. This implicitly provides
-     * converters from and to XlcNCompoundText. */
-
-    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNMultiByte, open_cstoutf8);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNCharSet, open_utf8tocs);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNChar, open_utf8tocs1);
-
-    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNWideChar, open_cstowcs);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCharSet, open_wcstocs);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNChar, open_wcstocs1);
-
-    _XlcSetConverter(lcd, XlcNString, lcd, XlcNMultiByte, open_strtoutf8);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNString, open_utf8tostr);
-    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNMultiByte, open_identity);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNUtf8String, open_identity);
-
-    /* Register converters for XlcNFontCharSet */
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNFontCharSet, open_utf8tofcs);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNFontCharSet, open_wcstofcs);
-}
-
-void
-_XlcAddGB18030LocaleConverters(
-    XLCd lcd)
-{
-
-    /* Register elementary converters. */
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar, open_iconv_mbstowcs);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNMultiByte, open_iconv_wcstombs);
-
-    /* Register converters for XlcNCharSet. This implicitly provides
-     * converters from and to XlcNCompoundText. */
-
-    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNMultiByte, open_iconv_cstombs);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNCharSet, open_iconv_mbstocs);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNChar, open_iconv_mbtocs);
-    _XlcSetConverter(lcd, XlcNString, lcd, XlcNMultiByte, open_iconv_strtombs);
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNString, open_iconv_mbstostr);
-
-    /* Register converters for XlcNFontCharSet */
-    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNFontCharSet, open_iconv_mbstofcs);
-
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNString, open_wcstostr);
-    _XlcSetConverter(lcd, XlcNString, lcd, XlcNWideChar, open_strtowcs);
-    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNWideChar, open_cstowcs);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCharSet, open_wcstocs);
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNChar, open_wcstocs1);
-
-    /* Register converters for XlcNFontCharSet */
-    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNFontCharSet, open_wcstofcs);
-}
+/******************************************************************

+

+              Copyright 1993 by SunSoft, Inc.

+              Copyright 1999-2000 by Bruno Haible

+

+Permission to use, copy, modify, distribute, and sell this software

+and its documentation for any purpose is hereby granted without fee,

+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 names of SunSoft, Inc. and

+Bruno Haible not be used in advertising or publicity pertaining to

+distribution of the software without specific, written prior

+permission.  SunSoft, Inc. and Bruno Haible make no representations

+about the suitability of this software for any purpose.  It is

+provided "as is" without express or implied warranty.

+

+SunSoft Inc. AND Bruno Haible DISCLAIM ALL WARRANTIES WITH REGARD

+TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY

+AND FITNESS, IN NO EVENT SHALL SunSoft, Inc. OR Bruno Haible BE LIABLE

+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 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.

+

+******************************************************************/

+

+/*

+ * This file contains:

+ *

+ * I. Conversion routines CompoundText/CharSet <--> Unicode/UTF-8.

+ *

+ *    Used for three purposes:

+ *      1. The UTF-8 locales, see below.

+ *      2. Unicode aware applications for which the use of 8-bit character

+ *         sets is an anachronism.

+ *      3. For conversion from keysym to locale encoding.

+ *

+ * II. Conversion files for an UTF-8 locale loader.

+ *     Supports: all locales with codeset UTF-8.

+ *     How: Provides converters for UTF-8.

+ *     Platforms: all systems.

+ *

+ * The loader itself is located in lcUTF8.c.

+ */

+

+/*

+ * The conversion from UTF-8 to CompoundText is realized in a very

+ * conservative way. Recall that CompoundText data is used for inter-client

+ * communication purposes. We distinguish three classes of clients:

+ * - Clients which accept only those pieces of CompoundText which belong to

+ *   the character set understood by the current locale.

+ *   (Example: clients which are linked to an older X11 library.)

+ * - Clients which accept CompoundText with multiple character sets and parse

+ *   it themselves.

+ *   (Example: emacs, xemacs.)

+ * - Clients which rely entirely on the X{mb,wc}TextPropertyToTextList

+ *   functions for the conversion of CompoundText to their current locale's

+ *   multi-byte/wide-character format.

+ * For best interoperation, the UTF-8 to CompoundText conversion proceeds as

+ * follows. For every character, it first tests whether the character is

+ * representable in the current locale's original (non-UTF-8) character set.

+ * If not, it goes through the list of predefined character sets for

+ * CompoundText and tests if the character is representable in that character

+ * set. If so, it encodes the character using its code within that character

+ * set. If not, it uses an UTF-8-in-CompoundText encapsulation. Since

+ * clients of the first and second kind ignore such encapsulated text,

+ * this encapsulation is kept to a minimum and terminated as early as possible.

+ *

+ * In a distant future, when clients of the first and second kind will have

+ * disappeared, we will be able to stuff UTF-8 data directly in CompoundText

+ * without first going through the list of predefined character sets.

+ */

+

+#ifdef HAVE_CONFIG_H

+#include <config.h>

+#endif

+#include <stdio.h>

+#include "Xlibint.h"

+#include "XlcPubI.h"

+#include "XlcGeneric.h"

+

+static XlcConv

+create_conv(

+    XLCd lcd,

+    XlcConvMethods methods)

+{

+    XlcConv conv;

+

+    conv = (XlcConv) Xmalloc(sizeof(XlcConvRec));

+    if (conv == (XlcConv) NULL)

+	return (XlcConv) NULL;

+

+    conv->methods = methods;

+    conv->state = NULL;

+

+    return conv;

+}

+

+static void

+close_converter(

+    XlcConv conv)

+{

+    Xfree((char *) conv);

+}

+

+/* Replacement character for invalid multibyte sequence or wide character. */

+#define BAD_WCHAR ((ucs4_t) 0xfffd)

+#define BAD_CHAR '?'

+

+/***************************************************************************/

+/* Part I: Conversion routines CompoundText/CharSet <--> Unicode/UTF-8.

+ *

+ * Note that this code works in any locale. We store Unicode values in

+ * `ucs4_t' variables, but don't pass them to the user.

+ *

+ * This code has to support all character sets that are used for CompoundText,

+ * nothing more, nothing less. See the table in lcCT.c.

+ * Since the conversion _to_ CompoundText is likely to need the tables for all

+ * character sets at once, we don't use dynamic loading (of tables or shared

+ * libraries through iconv()). Use a fixed set of tables instead.

+ *

+ * We use statically computed tables, not dynamically allocated arrays,

+ * because it's more memory efficient: Different processes using the same

+ * libX11 shared library share the "text" and read-only "data" sections.

+ */

+

+typedef unsigned int ucs4_t;

+#define conv_t XlcConv

+

+typedef struct _Utf8ConvRec {

+    const char *name;

+    XrmQuark xrm_name;

+    int (* cstowc) (XlcConv, ucs4_t *, unsigned char const *, int);

+    int (* wctocs) (XlcConv, unsigned char *, ucs4_t, int);

+} Utf8ConvRec, *Utf8Conv;

+

+/*

+ * int xxx_cstowc (XlcConv conv, ucs4_t *pwc, unsigned char const *s, int n)

+ * converts the byte sequence starting at s to a wide character. Up to n bytes

+ * are available at s. n is >= 1.

+ * Result is number of bytes consumed (if a wide character was read),

+ * or 0 if invalid, or -1 if n too small.

+ *

+ * int xxx_wctocs (XlcConv conv, unsigned char *r, ucs4_t wc, int n)

+ * converts the wide character wc to the character set xxx, and stores the

+ * result beginning at r. Up to n bytes may be written at r. n is >= 1.

+ * Result is number of bytes written, or 0 if invalid, or -1 if n too small.

+ */

+

+/* Return code if invalid. (xxx_mbtowc, xxx_wctomb) */

+#define RET_ILSEQ      0

+/* Return code if only a shift sequence of n bytes was read. (xxx_mbtowc) */

+#define RET_TOOFEW(n)  (-1-(n))

+/* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */

+#define RET_TOOSMALL   -1

+

+/*

+ * The tables below are bijective. It would be possible to extend the

+ * xxx_wctocs tables to do some transliteration (e.g. U+201C,U+201D -> 0x22)

+ * but *only* with characters not contained in any other table, and *only*

+ * when the current locale is not an UTF-8 locale.

+ */

+

+#include "lcUniConv/utf8.h"

+#include "lcUniConv/ucs2be.h"

+#ifdef notused

+#include "lcUniConv/ascii.h"

+#endif

+#include "lcUniConv/iso8859_1.h"

+#include "lcUniConv/iso8859_2.h"

+#include "lcUniConv/iso8859_3.h"

+#include "lcUniConv/iso8859_4.h"

+#include "lcUniConv/iso8859_5.h"

+#include "lcUniConv/iso8859_6.h"

+#include "lcUniConv/iso8859_7.h"

+#include "lcUniConv/iso8859_8.h"

+#include "lcUniConv/iso8859_9.h"

+#include "lcUniConv/iso8859_10.h"

+#include "lcUniConv/iso8859_11.h"

+#include "lcUniConv/iso8859_13.h"

+#include "lcUniConv/iso8859_14.h"

+#include "lcUniConv/iso8859_15.h"

+#include "lcUniConv/iso8859_16.h"

+#include "lcUniConv/iso8859_9e.h"

+#include "lcUniConv/jisx0201.h"

+#include "lcUniConv/tis620.h"

+#include "lcUniConv/koi8_r.h"

+#include "lcUniConv/koi8_u.h"

+#include "lcUniConv/koi8_c.h"

+#include "lcUniConv/armscii_8.h"

+#include "lcUniConv/cp1133.h"

+#include "lcUniConv/mulelao.h"

+#include "lcUniConv/viscii.h"

+#include "lcUniConv/tcvn.h"

+#include "lcUniConv/georgian_academy.h"

+#include "lcUniConv/georgian_ps.h"

+#include "lcUniConv/cp1251.h"

+#include "lcUniConv/cp1255.h"

+#include "lcUniConv/cp1256.h"

+#include "lcUniConv/tatar_cyr.h"

+

+typedef struct {

+    unsigned short indx; /* index into big table */

+    unsigned short used; /* bitmask of used entries */

+} Summary16;

+

+#include "lcUniConv/gb2312.h"

+#include "lcUniConv/jisx0208.h"

+#include "lcUniConv/jisx0212.h"

+#include "lcUniConv/ksc5601.h"

+#include "lcUniConv/big5.h"

+#include "lcUniConv/big5_emacs.h"

+#include "lcUniConv/big5hkscs.h"

+#include "lcUniConv/gbk.h"

+

+static Utf8ConvRec all_charsets[] = {

+    /* The ISO10646-1/UTF-8 entry occurs twice, once at the beginning

+       (for lookup speed), once at the end (as a fallback).  */

+    { "ISO10646-1", NULLQUARK,

+	utf8_mbtowc, utf8_wctomb

+    },

+

+    { "ISO8859-1", NULLQUARK,

+	iso8859_1_mbtowc, iso8859_1_wctomb

+    },

+    { "ISO8859-2", NULLQUARK,

+	iso8859_2_mbtowc, iso8859_2_wctomb

+    },

+    { "ISO8859-3", NULLQUARK,

+	iso8859_3_mbtowc, iso8859_3_wctomb

+    },

+    { "ISO8859-4", NULLQUARK,

+	iso8859_4_mbtowc, iso8859_4_wctomb

+    },

+    { "ISO8859-5", NULLQUARK,

+	iso8859_5_mbtowc, iso8859_5_wctomb

+    },

+    { "ISO8859-6", NULLQUARK,

+	iso8859_6_mbtowc, iso8859_6_wctomb

+    },

+    { "ISO8859-7", NULLQUARK,

+	iso8859_7_mbtowc, iso8859_7_wctomb

+    },

+    { "ISO8859-8", NULLQUARK,

+	iso8859_8_mbtowc, iso8859_8_wctomb

+    },

+    { "ISO8859-9", NULLQUARK,

+	iso8859_9_mbtowc, iso8859_9_wctomb

+    },

+    { "ISO8859-10", NULLQUARK,

+	iso8859_10_mbtowc, iso8859_10_wctomb

+    },

+    { "ISO8859-11", NULLQUARK,

+	iso8859_11_mbtowc, iso8859_11_wctomb

+    },

+    { "ISO8859-13", NULLQUARK,

+	iso8859_13_mbtowc, iso8859_13_wctomb

+    },

+    { "ISO8859-14", NULLQUARK,

+	iso8859_14_mbtowc, iso8859_14_wctomb

+    },

+    { "ISO8859-15", NULLQUARK,

+	iso8859_15_mbtowc, iso8859_15_wctomb

+    },

+    { "ISO8859-16", NULLQUARK,

+	iso8859_16_mbtowc, iso8859_16_wctomb

+    },

+    { "JISX0201.1976-0", NULLQUARK,

+	jisx0201_mbtowc, jisx0201_wctomb

+    },

+    { "TIS620-0", NULLQUARK,

+	tis620_mbtowc, tis620_wctomb

+    },

+    { "GB2312.1980-0", NULLQUARK,

+	gb2312_mbtowc, gb2312_wctomb

+    },

+    { "JISX0208.1983-0", NULLQUARK,

+	jisx0208_mbtowc, jisx0208_wctomb

+    },

+    { "JISX0208.1990-0", NULLQUARK,

+	jisx0208_mbtowc, jisx0208_wctomb

+    },

+    { "JISX0212.1990-0", NULLQUARK,

+	jisx0212_mbtowc, jisx0212_wctomb

+    },

+    { "KSC5601.1987-0", NULLQUARK,

+	ksc5601_mbtowc, ksc5601_wctomb

+    },

+    { "KOI8-R", NULLQUARK,

+	koi8_r_mbtowc, koi8_r_wctomb

+    },

+    { "KOI8-U", NULLQUARK,

+	koi8_u_mbtowc, koi8_u_wctomb

+    },

+    { "KOI8-C", NULLQUARK,

+	koi8_c_mbtowc, koi8_c_wctomb

+    },

+    { "TATAR-CYR", NULLQUARK,

+	tatar_cyr_mbtowc, tatar_cyr_wctomb

+    },

+    { "ARMSCII-8", NULLQUARK,

+	armscii_8_mbtowc, armscii_8_wctomb

+    },

+    { "IBM-CP1133", NULLQUARK,

+	cp1133_mbtowc, cp1133_wctomb

+    },

+    { "MULELAO-1", NULLQUARK,

+	mulelao_mbtowc, mulelao_wctomb

+    },

+    { "VISCII1.1-1", NULLQUARK,

+	viscii_mbtowc, viscii_wctomb

+    },

+    { "TCVN-5712", NULLQUARK,

+	tcvn_mbtowc, tcvn_wctomb

+    },

+    { "GEORGIAN-ACADEMY", NULLQUARK,

+	georgian_academy_mbtowc, georgian_academy_wctomb

+    },

+    { "GEORGIAN-PS", NULLQUARK,

+	georgian_ps_mbtowc, georgian_ps_wctomb

+    },

+    { "ISO8859-9E", NULLQUARK,

+	iso8859_9e_mbtowc, iso8859_9e_wctomb

+    },

+    { "MICROSOFT-CP1251", NULLQUARK,

+	cp1251_mbtowc, cp1251_wctomb

+    },

+    { "MICROSOFT-CP1255", NULLQUARK,

+	cp1255_mbtowc, cp1255_wctomb

+    },

+    { "MICROSOFT-CP1256", NULLQUARK,

+	cp1256_mbtowc, cp1256_wctomb

+    },

+    { "BIG5-0", NULLQUARK,

+	big5_mbtowc, big5_wctomb

+    },

+    { "BIG5-E0", NULLQUARK,

+	big5_0_mbtowc, big5_0_wctomb

+    },

+    { "BIG5-E1", NULLQUARK,

+	big5_1_mbtowc, big5_1_wctomb

+    },

+    { "GBK-0", NULLQUARK,

+	gbk_mbtowc, gbk_wctomb

+    },

+    { "BIG5HKSCS-0", NULLQUARK,

+	big5hkscs_mbtowc, big5hkscs_wctomb

+    },

+

+    /* The ISO10646-1/UTF-8 entry occurs twice, once at the beginning

+       (for lookup speed), once at the end (as a fallback).  */

+    { "ISO10646-1", NULLQUARK,

+	utf8_mbtowc, utf8_wctomb

+    },

+

+    /* Encoding ISO10646-1 for fonts means UCS2-like encoding

+       so for conversion to FontCharSet we need this record */

+    { "ISO10646-1", NULLQUARK,

+	ucs2be_mbtowc, ucs2be_wctomb

+    }

+};

+

+#define charsets_table_size (sizeof(all_charsets)/sizeof(all_charsets[0]))

+#define all_charsets_count  (charsets_table_size - 1)

+#define ucs2_conv_index     (charsets_table_size - 1)

+

+static void

+init_all_charsets (void)

+{

+    Utf8Conv convptr;

+    int i;

+

+    for (convptr = all_charsets, i = charsets_table_size; i > 0; convptr++, i--)

+	convptr->xrm_name = XrmStringToQuark(convptr->name);

+}

+

+#define lazy_init_all_charsets()					\

+    do {								\

+	if (all_charsets[0].xrm_name == NULLQUARK)			\

+	    init_all_charsets();					\

+    } while (0)

+

+/* from XlcNCharSet to XlcNUtf8String */

+

+static int

+cstoutf8(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    XlcCharSet charset;

+    const char *name;

+    Utf8Conv convptr;

+    int i;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    if (num_args < 1)

+	return -1;

+

+    charset = (XlcCharSet) args[0];

+    name = charset->encoding_name;

+    /* not charset->name because the latter has a ":GL"/":GR" suffix */

+

+    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)

+	if (!strcmp(convptr->name, name))

+	    break;

+    if (i == 0)

+	return -1;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend) {

+	ucs4_t wc;

+	int consumed;

+	int count;

+

+	consumed = convptr->cstowc(conv, &wc, src, srcend-src);

+	if (consumed == RET_ILSEQ)

+	    return -1;

+	if (consumed == RET_TOOFEW(0))

+	    break;

+

+	count = utf8_wctomb(NULL, dst, wc, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    count = utf8_wctomb(NULL, dst, BAD_WCHAR, dstend-dst);

+	    if (count == RET_TOOSMALL)

+		break;

+	    unconv_num++;

+	}

+	src += consumed;

+	dst += count;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_cstoutf8 = {

+    close_converter,

+    cstoutf8,

+    NULL

+};

+

+static XlcConv

+open_cstoutf8(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    lazy_init_all_charsets();

+    return create_conv(from_lcd, &methods_cstoutf8);

+}

+

+/* from XlcNUtf8String to XlcNCharSet */

+

+static XlcConv

+create_tocs_conv(

+    XLCd lcd,

+    XlcConvMethods methods)

+{

+    XlcConv conv;

+    CodeSet *codeset_list;

+    int codeset_num;

+    int charset_num;

+    int i, j, k;

+    Utf8Conv *preferred;

+

+    lazy_init_all_charsets();

+

+    codeset_list = XLC_GENERIC(lcd, codeset_list);

+    codeset_num = XLC_GENERIC(lcd, codeset_num);

+

+    charset_num = 0;

+    for (i = 0; i < codeset_num; i++)

+	charset_num += codeset_list[i]->num_charsets;

+    if (charset_num > all_charsets_count-1)

+	charset_num = all_charsets_count-1;

+

+    conv = (XlcConv) Xmalloc(sizeof(XlcConvRec)

+			     + (charset_num + 1) * sizeof(Utf8Conv));

+    if (conv == (XlcConv) NULL)

+	return (XlcConv) NULL;

+    preferred = (Utf8Conv *) ((char *) conv + sizeof(XlcConvRec));

+

+    /* Loop through all codesets mentioned in the locale. */

+    charset_num = 0;

+    for (i = 0; i < codeset_num; i++) {

+	XlcCharSet *charsets = codeset_list[i]->charset_list;

+	int num_charsets = codeset_list[i]->num_charsets;

+	for (j = 0; j < num_charsets; j++) {

+	    const char *name = charsets[j]->encoding_name;

+	    /* If it wasn't already encountered... */

+	    for (k = charset_num-1; k >= 0; k--)

+		if (!strcmp(preferred[k]->name, name))

+		    break;

+	    if (k < 0) {

+		/* Look it up in all_charsets[]. */

+		for (k = 0; k < all_charsets_count-1; k++)

+		    if (!strcmp(all_charsets[k].name, name)) {

+			/* Add it to the preferred set. */

+			preferred[charset_num++] = &all_charsets[k];

+			break;

+		    }

+	    }

+	}

+    }

+    preferred[charset_num] = (Utf8Conv) NULL;

+

+    conv->methods = methods;

+    conv->state = (XPointer) preferred;

+

+    return conv;

+}

+

+static void

+close_tocs_converter(

+    XlcConv conv)

+{

+    /* conv->state is allocated together with conv, free both at once.  */

+    Xfree((char *) conv);

+}

+

+/*

+ * Converts a Unicode character to an appropriate character set. The NULL

+ * terminated array of preferred character sets is passed as first argument.

+ * If successful, *charsetp is set to the character set that was used, and

+ * *sidep is set to the character set side (XlcGL or XlcGR).

+ */

+static int

+charset_wctocs(

+    Utf8Conv *preferred,

+    Utf8Conv *charsetp,

+    XlcSide *sidep,

+    XlcConv conv,

+    unsigned char *r,

+    ucs4_t wc,

+    int n)

+{

+    int count;

+    Utf8Conv convptr;

+    int i;

+

+    for (; *preferred != (Utf8Conv) NULL; preferred++) {

+	convptr = *preferred;

+	count = convptr->wctocs(conv, r, wc, n);

+	if (count == RET_TOOSMALL)

+	    return RET_TOOSMALL;

+	if (count != RET_ILSEQ) {

+	    *charsetp = convptr;

+	    *sidep = (*r < 0x80 ? XlcGL : XlcGR);

+	    return count;

+	}

+    }

+    for (convptr = all_charsets+1, i = all_charsets_count-1; i > 0; convptr++, i--) {

+	count = convptr->wctocs(conv, r, wc, n);

+	if (count == RET_TOOSMALL)

+	    return RET_TOOSMALL;

+	if (count != RET_ILSEQ) {

+	    *charsetp = convptr;

+	    *sidep = (*r < 0x80 ? XlcGL : XlcGR);

+	    return count;

+	}

+    }

+    return RET_ILSEQ;

+}

+

+static int

+utf8tocs(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    Utf8Conv *preferred_charsets;

+    XlcCharSet last_charset = NULL;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    preferred_charsets = (Utf8Conv *) conv->state;

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	Utf8Conv chosen_charset = NULL;

+	XlcSide chosen_side = XlcNONE;

+	ucs4_t wc;

+	int consumed;

+	int count;

+

+	consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);

+	if (consumed == RET_TOOFEW(0))

+	    break;

+	if (consumed == RET_ILSEQ) {

+	    src++;

+	    unconv_num++;

+	    continue;

+	}

+

+	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    src += consumed;

+	    unconv_num++;

+	    continue;

+	}

+

+	if (last_charset == NULL) {

+	    last_charset =

+	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+	    if (last_charset == NULL) {

+		src += consumed;

+		unconv_num++;

+		continue;

+	    }

+	} else {

+	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name

+	          && (last_charset->side == XlcGLGR

+	              || last_charset->side == chosen_side)))

+		break;

+	}

+	src += consumed;

+	dst += count;

+    }

+

+    if (last_charset == NULL)

+	return -1;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = last_charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_utf8tocs = {

+    close_tocs_converter,

+    utf8tocs,

+    NULL

+};

+

+static XlcConv

+open_utf8tocs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tocs_conv(from_lcd, &methods_utf8tocs);

+}

+

+/* from XlcNUtf8String to XlcNChar */

+

+static int

+utf8tocs1(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    Utf8Conv *preferred_charsets;

+    XlcCharSet last_charset = NULL;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    preferred_charsets = (Utf8Conv *) conv->state;

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	Utf8Conv chosen_charset = NULL;

+	XlcSide chosen_side = XlcNONE;

+	ucs4_t wc;

+	int consumed;

+	int count;

+

+	consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);

+	if (consumed == RET_TOOFEW(0))

+	    break;

+	if (consumed == RET_ILSEQ) {

+	    src++;

+	    unconv_num++;

+	    continue;

+	}

+

+	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    src += consumed;

+	    unconv_num++;

+	    continue;

+	}

+

+	if (last_charset == NULL) {

+	    last_charset =

+	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+	    if (last_charset == NULL) {

+		src += consumed;

+		unconv_num++;

+		continue;

+	    }

+	} else {

+	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name

+	          && (last_charset->side == XlcGLGR

+	              || last_charset->side == chosen_side)))

+		break;

+	}

+	src += consumed;

+	dst += count;

+	break;

+    }

+

+    if (last_charset == NULL)

+	return -1;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = last_charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_utf8tocs1 = {

+    close_tocs_converter,

+    utf8tocs1,

+    NULL

+};

+

+static XlcConv

+open_utf8tocs1(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tocs_conv(from_lcd, &methods_utf8tocs1);

+}

+

+/* from XlcNUtf8String to XlcNString */

+

+static int

+utf8tostr(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend) {

+	unsigned char c;

+	ucs4_t wc;

+	int consumed;

+

+	consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);

+	if (consumed == RET_TOOFEW(0))

+	    break;

+	if (dst == dstend)

+	    break;

+	if (consumed == RET_ILSEQ) {

+	    consumed = 1;

+	    c = BAD_CHAR;

+	    unconv_num++;

+	} else {

+	    if ((wc & ~(ucs4_t)0xff) != 0) {

+		c = BAD_CHAR;

+		unconv_num++;

+	    } else

+		c = (unsigned char) wc;

+	}

+	*dst++ = c;

+	src += consumed;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_utf8tostr = {

+    close_converter,

+    utf8tostr,

+    NULL

+};

+

+static XlcConv

+open_utf8tostr(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_utf8tostr);

+}

+

+/* from XlcNString to XlcNUtf8String */

+

+static int

+strtoutf8(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+

+    while (src < srcend) {

+	int count = utf8_wctomb(NULL, dst, *src, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	dst += count;

+	src++;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return 0;

+}

+

+static XlcConvMethodsRec methods_strtoutf8 = {

+    close_converter,

+    strtoutf8,

+    NULL

+};

+

+static XlcConv

+open_strtoutf8(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_strtoutf8);

+}

+

+/* Support for the input methods. */

+

+XPointer

+_Utf8GetConvByName(

+    const char *name)

+{

+    XrmQuark xrm_name;

+    Utf8Conv convptr;

+    int i;

+

+    if (name == NULL)

+        return (XPointer) NULL;

+

+    lazy_init_all_charsets();

+    xrm_name = XrmStringToQuark(name);

+

+    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)

+	if (convptr->xrm_name == xrm_name)

+	    return (XPointer) convptr->wctocs;

+    return (XPointer) NULL;

+}

+

+/* from XlcNUcsChar to XlcNChar, needed for input methods */

+

+static XlcConv

+create_ucstocs_conv(

+    XLCd lcd,

+    XlcConvMethods methods)

+{

+

+    if (XLC_PUBLIC_PART(lcd)->codeset

+	&& _XlcCompareISOLatin1(XLC_PUBLIC_PART(lcd)->codeset, "UTF-8") == 0) {

+	XlcConv conv;

+	Utf8Conv *preferred;

+

+	lazy_init_all_charsets();

+

+	conv = (XlcConv) Xmalloc(sizeof(XlcConvRec) + 2 * sizeof(Utf8Conv));

+	if (conv == (XlcConv) NULL)

+	    return (XlcConv) NULL;

+	preferred = (Utf8Conv *) ((char *) conv + sizeof(XlcConvRec));

+

+	preferred[0] = &all_charsets[0]; /* ISO10646 */

+	preferred[1] = (Utf8Conv) NULL;

+

+	conv->methods = methods;

+	conv->state = (XPointer) preferred;

+

+	return conv;

+    } else {

+	return create_tocs_conv(lcd, methods);

+    }

+}

+

+static int

+charset_wctocs_exactly(

+    Utf8Conv *preferred,

+    Utf8Conv *charsetp,

+    XlcSide *sidep,

+    XlcConv conv,

+    unsigned char *r,

+    ucs4_t wc,

+    int n)

+{

+    int count;

+    Utf8Conv convptr;

+

+    for (; *preferred != (Utf8Conv) NULL; preferred++) {

+	convptr = *preferred;

+	count = convptr->wctocs(conv, r, wc, n);

+	if (count == RET_TOOSMALL)

+	    return RET_TOOSMALL;

+	if (count != RET_ILSEQ) {

+	    *charsetp = convptr;

+	    *sidep = (*r < 0x80 ? XlcGL : XlcGR);

+	    return count;

+	}

+    }

+    return RET_ILSEQ;

+}

+

+static int

+ucstocs1(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    ucs4_t const *src = (ucs4_t const *) *from;

+    unsigned char *dst = (unsigned char *) *to;

+    int unconv_num = 0;

+    Utf8Conv *preferred_charsets = (Utf8Conv *) conv->state;

+    Utf8Conv chosen_charset = NULL;

+    XlcSide chosen_side = XlcNONE;

+    XlcCharSet charset = NULL;

+    int count;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    count = charset_wctocs_exactly(preferred_charsets, &chosen_charset,

+                                   &chosen_side, conv, dst, *src, *to_left);

+    if (count < 1) {

+        unconv_num++;

+        count = 0;

+    } else {

+        charset = _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+    }

+    if (charset == NULL)

+	return -1;

+

+    *from = (XPointer) ++src;

+    (*from_left)--;

+    *to = (XPointer) dst;

+    *to_left -= count;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_ucstocs1 = {

+    close_tocs_converter,

+    ucstocs1,

+    NULL

+};

+

+static XlcConv

+open_ucstocs1(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_ucstocs_conv(from_lcd, &methods_ucstocs1);

+}

+

+/* from XlcNUcsChar to XlcNUtf8String, needed for input methods */

+

+static int

+ucstoutf8(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    const ucs4_t *src;

+    const ucs4_t *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (const ucs4_t *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend) {

+	int count = utf8_wctomb(NULL, dst, *src, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ)

+	    unconv_num++;

+	src++;

+	dst += count;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_ucstoutf8 = {

+    close_converter,

+    ucstoutf8,

+    NULL

+};

+

+static XlcConv

+open_ucstoutf8(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_ucstoutf8);

+}

+

+/* Registers UTF-8 converters for a non-UTF-8 locale. */

+void

+_XlcAddUtf8Converters(

+    XLCd lcd)

+{

+    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNUtf8String, open_cstoutf8);

+    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNCharSet, open_utf8tocs);

+    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNChar, open_utf8tocs1);

+    _XlcSetConverter(lcd, XlcNString, lcd, XlcNUtf8String, open_strtoutf8);

+    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNString, open_utf8tostr);

+    _XlcSetConverter(lcd, XlcNUcsChar,    lcd, XlcNChar, open_ucstocs1);

+    _XlcSetConverter(lcd, XlcNUcsChar,    lcd, XlcNUtf8String, open_ucstoutf8);

+}

+

+/***************************************************************************/

+/* Part II: UTF-8 locale loader conversion files

+ *

+ * Here we can assume that "multi-byte" is UTF-8 and that `wchar_t' is Unicode.

+ */

+

+/* from XlcNMultiByte to XlcNWideChar */

+

+static int

+utf8towcs(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    wchar_t *dst;

+    wchar_t *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (wchar_t *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	ucs4_t wc;

+	int consumed = utf8_mbtowc(NULL, &wc, src, srcend-src);

+	if (consumed == RET_TOOFEW(0))

+	    break;

+	if (consumed == RET_ILSEQ) {

+	    src++;

+	    *dst = BAD_WCHAR;

+	    unconv_num++;

+	} else {

+	    src += consumed;

+	    *dst = wc;

+	}

+	dst++;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_utf8towcs = {

+    close_converter,

+    utf8towcs,

+    NULL

+};

+

+static XlcConv

+open_utf8towcs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_utf8towcs);

+}

+

+/* from XlcNWideChar to XlcNMultiByte */

+

+static int

+wcstoutf8(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    wchar_t const *src;

+    wchar_t const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (wchar_t const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend) {

+	int count = utf8_wctomb(NULL, dst, *src, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    count = utf8_wctomb(NULL, dst, BAD_WCHAR, dstend-dst);

+	    if (count == RET_TOOSMALL)

+		break;

+	    unconv_num++;

+	}

+	dst += count;

+	src++;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_wcstoutf8 = {

+    close_converter,

+    wcstoutf8,

+    NULL

+};

+

+static XlcConv

+open_wcstoutf8(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_wcstoutf8);

+}

+

+/* from XlcNString to XlcNWideChar */

+

+static int

+our_strtowcs(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    wchar_t *dst;

+    wchar_t *dstend;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (wchar_t *) *to;

+    dstend = dst + *to_left;

+

+    while (src < srcend && dst < dstend)

+	*dst++ = (wchar_t) *src++;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return 0;

+}

+

+static XlcConvMethodsRec methods_strtowcs = {

+    close_converter,

+    our_strtowcs,

+    NULL

+};

+

+static XlcConv

+open_strtowcs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_strtowcs);

+}

+

+/* from XlcNWideChar to XlcNString */

+

+static int

+our_wcstostr(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    wchar_t const *src;

+    wchar_t const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (wchar_t const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	unsigned int wc = *src++;

+	if (wc < 0x80)

+	    *dst = wc;

+	else {

+	    *dst = BAD_CHAR;

+	    unconv_num++;

+	}

+	dst++;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_wcstostr = {

+    close_converter,

+    our_wcstostr,

+    NULL

+};

+

+static XlcConv

+open_wcstostr(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_wcstostr);

+}

+

+/* from XlcNCharSet to XlcNWideChar */

+

+static int

+cstowcs(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    XlcCharSet charset;

+    const char *name;

+    Utf8Conv convptr;

+    int i;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    wchar_t *dst;

+    wchar_t *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    if (num_args < 1)

+	return -1;

+

+    charset = (XlcCharSet) args[0];

+    name = charset->encoding_name;

+    /* not charset->name because the latter has a ":GL"/":GR" suffix */

+

+    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)

+	if (!strcmp(convptr->name, name))

+	    break;

+    if (i == 0)

+	return -1;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (wchar_t *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	unsigned int wc;

+	int consumed;

+

+	consumed = convptr->cstowc(conv, &wc, src, srcend-src);

+	if (consumed == RET_ILSEQ)

+	    return -1;

+	if (consumed == RET_TOOFEW(0))

+	    break;

+

+	*dst++ = wc;

+	src += consumed;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_cstowcs = {

+    close_converter,

+    cstowcs,

+    NULL

+};

+

+static XlcConv

+open_cstowcs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    lazy_init_all_charsets();

+    return create_conv(from_lcd, &methods_cstowcs);

+}

+

+/* from XlcNWideChar to XlcNCharSet */

+

+static int

+wcstocs(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    Utf8Conv *preferred_charsets;

+    XlcCharSet last_charset = NULL;

+    wchar_t const *src;

+    wchar_t const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    preferred_charsets = (Utf8Conv *) conv->state;

+    src = (wchar_t const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	Utf8Conv chosen_charset = NULL;

+	XlcSide chosen_side = XlcNONE;

+	wchar_t wc = *src;

+	int count;

+

+	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    src++;

+	    unconv_num++;

+	    continue;

+	}

+

+	if (last_charset == NULL) {

+	    last_charset =

+	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+	    if (last_charset == NULL) {

+		src++;

+		unconv_num++;

+		continue;

+	    }

+	} else {

+	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name

+	          && (last_charset->side == XlcGLGR

+	              || last_charset->side == chosen_side)))

+		break;

+	}

+	src++;

+	dst += count;

+    }

+

+    if (last_charset == NULL)

+	return -1;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = last_charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_wcstocs = {

+    close_tocs_converter,

+    wcstocs,

+    NULL

+};

+

+static XlcConv

+open_wcstocs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tocs_conv(from_lcd, &methods_wcstocs);

+}

+

+/* from XlcNWideChar to XlcNChar */

+

+static int

+wcstocs1(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    Utf8Conv *preferred_charsets;

+    XlcCharSet last_charset = NULL;

+    wchar_t const *src;

+    wchar_t const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    preferred_charsets = (Utf8Conv *) conv->state;

+    src = (wchar_t const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	Utf8Conv chosen_charset = NULL;

+	XlcSide chosen_side = XlcNONE;

+	wchar_t wc = *src;

+	int count;

+

+	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    src++;

+	    unconv_num++;

+	    continue;

+	}

+

+	if (last_charset == NULL) {

+	    last_charset =

+	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+	    if (last_charset == NULL) {

+		src++;

+		unconv_num++;

+		continue;

+	    }

+	} else {

+	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name

+	          && (last_charset->side == XlcGLGR

+	              || last_charset->side == chosen_side)))

+		break;

+	}

+	src++;

+	dst += count;

+	break;

+    }

+

+    if (last_charset == NULL)

+	return -1;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = last_charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec methods_wcstocs1 = {

+    close_tocs_converter,

+    wcstocs1,

+    NULL

+};

+

+static XlcConv

+open_wcstocs1(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tocs_conv(from_lcd, &methods_wcstocs1);

+}

+

+/* trivial, no conversion */

+

+static int

+identity(

+    XlcConv conv,

+    XPointer *from,

+    int *from_left,

+    XPointer *to,

+    int *to_left,

+    XPointer *args,

+    int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+

+    while (src < srcend && dst < dstend)

+	*dst++ = *src++;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return 0;

+}

+

+static XlcConvMethodsRec methods_identity = {

+    close_converter,

+    identity,

+    NULL

+};

+

+static XlcConv

+open_identity(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_conv(from_lcd, &methods_identity);

+}

+

+/* from MultiByte/WideChar to FontCharSet. */

+/* They really use converters to CharSet

+ * but with different create_conv procedure. */

+

+static XlcConv

+create_tofontcs_conv(

+    XLCd lcd,

+    XlcConvMethods methods)

+{

+    XlcConv conv;

+    int i, num, k, count;

+    char **value, buf[20];

+    Utf8Conv *preferred;

+

+    lazy_init_all_charsets();

+

+    for (i = 0, num = 0;; i++) {

+	sprintf(buf, "fs%d.charset.name", i);

+	_XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);

+	if (count < 1) {

+	    sprintf(buf, "fs%d.charset", i);

+	    _XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);

+	    if (count < 1)

+		break;

+	}

+	num += count;

+    }

+

+    conv = (XlcConv) Xmalloc(sizeof(XlcConvRec) + (num + 1) * sizeof(Utf8Conv));

+    if (conv == (XlcConv) NULL)

+	return (XlcConv) NULL;

+    preferred = (Utf8Conv *) ((char *) conv + sizeof(XlcConvRec));

+

+    /* Loop through all fontsets mentioned in the locale. */

+    for (i = 0, num = 0;; i++) {

+        sprintf(buf, "fs%d.charset.name", i);

+        _XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);

+        if (count < 1) {

+            sprintf(buf, "fs%d.charset", i);

+            _XlcGetResource(lcd, "XLC_FONTSET", buf, &value, &count);

+            if (count < 1)

+                break;

+        }

+	while (count-- > 0) {

+	    XlcCharSet charset = _XlcGetCharSet(*value++);

+	    const char *name;

+

+	    if (charset == (XlcCharSet) NULL)

+		continue;

+

+	    name = charset->encoding_name;

+	    /* If it wasn't already encountered... */

+	    for (k = num - 1; k >= 0; k--)

+		if (!strcmp(preferred[k]->name, name))

+		    break;

+	    if (k < 0) {

+                /* For fonts "ISO10646-1" means ucs2, not utf8.*/

+                if (!strcmp("ISO10646-1", name)) {

+                    preferred[num++] = &all_charsets[ucs2_conv_index];

+                    continue;

+                }

+		/* Look it up in all_charsets[]. */

+		for (k = 0; k < all_charsets_count-1; k++)

+		    if (!strcmp(all_charsets[k].name, name)) {

+			/* Add it to the preferred set. */

+			preferred[num++] = &all_charsets[k];

+			break;

+		    }

+	    }

+        }

+    }

+    preferred[num] = (Utf8Conv) NULL;

+

+    conv->methods = methods;

+    conv->state = (XPointer) preferred;

+

+    return conv;

+}

+

+static XlcConv

+open_wcstofcs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tofontcs_conv(from_lcd, &methods_wcstocs);

+}

+

+static XlcConv

+open_utf8tofcs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tofontcs_conv(from_lcd, &methods_utf8tocs);

+}

+

+/* ========================== iconv Stuff ================================ */

+

+/* from XlcNCharSet to XlcNMultiByte */

+

+static int

+iconv_cstombs(XlcConv conv, XPointer *from, int *from_left,

+	      XPointer *to, int *to_left, XPointer *args, int num_args)

+{

+    XlcCharSet charset;

+    char const *name;

+    Utf8Conv convptr;

+    int i;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    if (num_args < 1)

+	return -1;

+

+    charset = (XlcCharSet) args[0];

+    name = charset->encoding_name;

+    /* not charset->name because the latter has a ":GL"/":GR" suffix */

+

+    for (convptr = all_charsets, i = all_charsets_count-1; i > 0; convptr++, i--)

+	if (!strcmp(convptr->name, name))

+	    break;

+    if (i == 0)

+	return -1;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend) {

+	ucs4_t wc;

+	int consumed;

+	int count;

+

+	consumed = convptr->cstowc(conv, &wc, src, srcend-src);

+	if (consumed == RET_ILSEQ)

+	    return -1;

+	if (consumed == RET_TOOFEW(0))

+	    break;

+

+    /* Use stdc iconv to convert widechar -> multibyte */

+

+	count = wctomb((char *)dst, wc);

+	if (count == 0)

+	    break;

+	if (count == -1) {

+	    count = wctomb((char *)dst, BAD_WCHAR);

+	    if (count == 0)

+		break;

+	    unconv_num++;

+	}

+	src += consumed;

+	dst += count;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+

+}

+

+static XlcConvMethodsRec iconv_cstombs_methods = {

+    close_converter,

+    iconv_cstombs,

+    NULL

+};

+

+static XlcConv

+open_iconv_cstombs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    lazy_init_all_charsets();

+    return create_conv(from_lcd, &iconv_cstombs_methods);

+}

+

+static int

+iconv_mbstocs(XlcConv conv, XPointer *from, int *from_left,

+	      XPointer *to, int *to_left, XPointer *args, int num_args)

+{

+    Utf8Conv *preferred_charsets;

+    XlcCharSet last_charset = NULL;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    preferred_charsets = (Utf8Conv *) conv->state;

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	Utf8Conv chosen_charset = NULL;

+	XlcSide chosen_side = XlcNONE;

+	wchar_t wc;

+	int consumed;

+	int count;

+

+    /* Uses stdc iconv to convert multibyte -> widechar */

+

+	consumed = mbtowc(&wc, (const char *)src, srcend-src);

+	if (consumed == 0)

+	    break;

+	if (consumed == -1) {

+	    src++;

+	    unconv_num++;

+	    continue;

+	}

+

+	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);

+

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    src += consumed;

+	    unconv_num++;

+	    continue;

+	}

+

+	if (last_charset == NULL) {

+	    last_charset =

+	        _XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+	    if (last_charset == NULL) {

+		src += consumed;

+		unconv_num++;

+		continue;

+	    }

+	} else {

+	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name

+	          && (last_charset->side == XlcGLGR

+	              || last_charset->side == chosen_side)))

+		break;

+	}

+	src += consumed;

+	dst += count;

+    }

+

+    if (last_charset == NULL)

+	return -1;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = last_charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec iconv_mbstocs_methods = {

+    close_tocs_converter,

+    iconv_mbstocs,

+    NULL

+};

+

+static XlcConv

+open_iconv_mbstocs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    return create_tocs_conv(from_lcd, &iconv_mbstocs_methods);

+}

+

+/* from XlcNMultiByte to XlcNChar */

+

+static int

+iconv_mbtocs(XlcConv conv, XPointer *from, int *from_left,

+	     XPointer *to, int *to_left, XPointer *args, int num_args)

+{

+    Utf8Conv *preferred_charsets;

+    XlcCharSet last_charset = NULL;

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    preferred_charsets = (Utf8Conv *) conv->state;

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend && dst < dstend) {

+	Utf8Conv chosen_charset = NULL;

+	XlcSide chosen_side = XlcNONE;

+	wchar_t wc;

+	int consumed;

+	int count;

+

+    /* Uses stdc iconv to convert multibyte -> widechar */

+

+	consumed = mbtowc(&wc, (const char *)src, srcend-src);

+	if (consumed == 0)

+	    break;

+	if (consumed == -1) {

+	    src++;

+	    unconv_num++;

+	    continue;

+	}

+

+	count = charset_wctocs(preferred_charsets, &chosen_charset, &chosen_side, conv, dst, wc, dstend-dst);

+	if (count == RET_TOOSMALL)

+	    break;

+	if (count == RET_ILSEQ) {

+	    src += consumed;

+	    unconv_num++;

+	    continue;

+	}

+

+	if (last_charset == NULL) {

+	    last_charset =

+		_XlcGetCharSetWithSide(chosen_charset->name, chosen_side);

+	    if (last_charset == NULL) {

+		src += consumed;

+		unconv_num++;

+		continue;

+	    }

+	} else {

+	    if (!(last_charset->xrm_encoding_name == chosen_charset->xrm_name

+		  && (last_charset->side == XlcGLGR

+		      || last_charset->side == chosen_side)))

+		break;

+	}

+	src += consumed;

+	dst += count;

+    }

+

+    if (last_charset == NULL)

+	return -1;

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    if (num_args >= 1)

+	*((XlcCharSet *)args[0]) = last_charset;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec iconv_mbtocs_methods = {

+    close_tocs_converter,

+    iconv_mbtocs,

+    NULL

+};

+

+static XlcConv

+open_iconv_mbtocs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    return create_tocs_conv(from_lcd, &iconv_mbtocs_methods );

+}

+

+/* from XlcNMultiByte to XlcNString */

+

+static int

+iconv_mbstostr(XlcConv conv, XPointer *from, int *from_left,

+	       XPointer *to, int *to_left, XPointer *args, int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+    int unconv_num;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+    unconv_num = 0;

+

+    while (src < srcend) {

+	unsigned char c;

+	wchar_t wc;

+	int consumed;

+

+    /* Uses stdc iconv to convert multibyte -> widechar */

+

+	consumed = mbtowc(&wc, (const char *)src, srcend-src);

+	if (consumed == 0)

+	    break;

+	if (dst == dstend)

+	    break;

+	if (consumed == -1) {

+	    consumed = 1;

+	    c = BAD_CHAR;

+	    unconv_num++;

+	} else {

+	    if ((wc & ~(wchar_t)0xff) != 0) {

+		c = BAD_CHAR;

+		unconv_num++;

+	    } else

+		c = (unsigned char) wc;

+	}

+	*dst++ = c;

+	src += consumed;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec iconv_mbstostr_methods = {

+    close_converter,

+    iconv_mbstostr,

+    NULL

+};

+

+static XlcConv

+open_iconv_mbstostr(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    return create_conv(from_lcd, &iconv_mbstostr_methods);

+}

+

+/* from XlcNString to XlcNMultiByte */

+static int

+iconv_strtombs(XlcConv conv, XPointer *from, int *from_left,

+	       XPointer *to, int *to_left, XPointer *args, int num_args)

+{

+    unsigned char const *src;

+    unsigned char const *srcend;

+    unsigned char *dst;

+    unsigned char *dstend;

+

+    if (from == NULL || *from == NULL)

+	return 0;

+

+    src = (unsigned char const *) *from;

+    srcend = src + *from_left;

+    dst = (unsigned char *) *to;

+    dstend = dst + *to_left;

+

+    while (src < srcend) {

+	int count = wctomb((char *)dst, *src);

+	if (count < 0)

+	    break;

+	dst += count;

+	src++;

+    }

+

+    *from = (XPointer) src;

+    *from_left = srcend - src;

+    *to = (XPointer) dst;

+    *to_left = dstend - dst;

+

+    return 0;

+}

+

+static XlcConvMethodsRec iconv_strtombs_methods= {

+    close_converter,

+    iconv_strtombs,

+    NULL

+};

+

+static XlcConv

+open_iconv_strtombs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    return create_conv(from_lcd, &iconv_strtombs_methods);

+}

+

+/***************************************************************************/

+/* Part II: An iconv locale loader.

+ *

+ *Here we can assume that "multi-byte" is iconv and that `wchar_t' is Unicode.

+ */

+

+/* from XlcNMultiByte to XlcNWideChar */

+static int

+iconv_mbstowcs(XlcConv conv, XPointer *from, int *from_left,

+	       XPointer *to, int *to_left, XPointer *args,  int num_args)

+{

+    char *src = *((char **) from);

+    wchar_t *dst = *((wchar_t **) to);

+    int src_left = *from_left;

+    int dst_left = *to_left;

+    int length, unconv_num = 0;

+

+    while (src_left > 0 && dst_left > 0) {

+	length = mbtowc(dst, src, src_left);

+

+	if (length > 0) {

+	    src += length;

+	    src_left -= length;

+	    if (dst)

+	        dst++;

+	    dst_left--;

+	} else if (length < 0) {

+	    src++;

+	    src_left--;

+	    unconv_num++;

+        } else {

+            /* null ? */

+            src++;

+            src_left--;

+            if (dst) 

+                *dst++ = L'\0';

+            dst_left--;

+        }

+    }

+

+    *from = (XPointer) src;

+    if (dst)

+	*to = (XPointer) dst;

+    *from_left = src_left;

+    *to_left = dst_left;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec iconv_mbstowcs_methods = {

+    close_converter,

+    iconv_mbstowcs,

+    NULL

+} ;

+

+static XlcConv

+open_iconv_mbstowcs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    return create_conv(from_lcd, &iconv_mbstowcs_methods);

+}

+

+static int

+iconv_wcstombs(XlcConv conv, XPointer *from, int *from_left,

+	       XPointer *to, int *to_left, XPointer *args, int num_args)

+{

+    wchar_t *src = *((wchar_t **) from);

+    char *dst = *((char **) to);

+    int src_left = *from_left;

+    int dst_left = *to_left;

+    int length, unconv_num = 0;

+

+    while (src_left > 0 && dst_left >= MB_CUR_MAX) { 

+	length = wctomb(dst, *src);		/* XXX */

+

+        if (length > 0) {

+	    src++;

+	    src_left--;

+	    if (dst) 

+		dst += length;

+	    dst_left -= length;

+	} else if (length < 0) {

+	    src++;

+	    src_left--;

+	    unconv_num++;

+	} 

+    }

+

+    *from = (XPointer) src;

+    if (dst)

+      *to = (XPointer) dst;

+    *from_left = src_left;

+    *to_left = dst_left;

+

+    return unconv_num;

+}

+

+static XlcConvMethodsRec iconv_wcstombs_methods = {

+    close_converter,

+    iconv_wcstombs,

+    NULL

+} ;

+

+static XlcConv

+open_iconv_wcstombs(XLCd from_lcd, const char *from_type, XLCd to_lcd, const char *to_type)

+{

+    return create_conv(from_lcd, &iconv_wcstombs_methods);

+}

+

+static XlcConv

+open_iconv_mbstofcs(

+    XLCd from_lcd,

+    const char *from_type,

+    XLCd to_lcd,

+    const char *to_type)

+{

+    return create_tofontcs_conv(from_lcd, &iconv_mbstocs_methods);

+}

+

+/* Registers UTF-8 converters for a UTF-8 locale. */

+

+void

+_XlcAddUtf8LocaleConverters(

+    XLCd lcd)

+{

+    /* Register elementary converters. */

+

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar, open_utf8towcs);

+

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNMultiByte, open_wcstoutf8);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNString, open_wcstostr);

+

+    _XlcSetConverter(lcd, XlcNString, lcd, XlcNWideChar, open_strtowcs);

+

+    /* Register converters for XlcNCharSet. This implicitly provides

+     * converters from and to XlcNCompoundText. */

+

+    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNMultiByte, open_cstoutf8);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNCharSet, open_utf8tocs);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNChar, open_utf8tocs1);

+

+    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNWideChar, open_cstowcs);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCharSet, open_wcstocs);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNChar, open_wcstocs1);

+

+    _XlcSetConverter(lcd, XlcNString, lcd, XlcNMultiByte, open_strtoutf8);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNString, open_utf8tostr);

+    _XlcSetConverter(lcd, XlcNUtf8String, lcd, XlcNMultiByte, open_identity);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNUtf8String, open_identity);

+

+    /* Register converters for XlcNFontCharSet */

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNFontCharSet, open_utf8tofcs);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNFontCharSet, open_wcstofcs);

+}

+

+void

+_XlcAddGB18030LocaleConverters(

+    XLCd lcd)

+{

+

+    /* Register elementary converters. */

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar, open_iconv_mbstowcs);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNMultiByte, open_iconv_wcstombs);

+

+    /* Register converters for XlcNCharSet. This implicitly provides

+     * converters from and to XlcNCompoundText. */

+

+    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNMultiByte, open_iconv_cstombs);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNCharSet, open_iconv_mbstocs);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNChar, open_iconv_mbtocs);

+    _XlcSetConverter(lcd, XlcNString, lcd, XlcNMultiByte, open_iconv_strtombs);

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNString, open_iconv_mbstostr);

+

+    /* Register converters for XlcNFontCharSet */

+    _XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNFontCharSet, open_iconv_mbstofcs);

+

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNString, open_wcstostr);

+    _XlcSetConverter(lcd, XlcNString, lcd, XlcNWideChar, open_strtowcs);

+    _XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNWideChar, open_cstowcs);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCharSet, open_wcstocs);

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNChar, open_wcstocs1);

+

+    /* Register converters for XlcNFontCharSet */

+    _XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNFontCharSet, open_wcstofcs);

+}