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+/* $Xorg: lcRM.c,v 1.3 2000/08/17 19:45:19 cpqbld Exp $ */
+/*
+ * Copyright 1992, 1993 by TOSHIBA Corp.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of TOSHIBA not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission. TOSHIBA make no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * TOSHIBA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ * TOSHIBA 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.
+ *
+ * Author: Katsuhisa Yano TOSHIBA Corp.
+ * mopi@osa.ilab.toshiba.co.jp
+ * Bug fixes: Bruno Haible XFree86 Inc.
+ */
+/* $XFree86: xc/lib/X11/lcRM.c,v 1.4 2000/11/28 18:49:48 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "XlcPubI.h"
+#include <stdio.h>
+
+/*
+ * Default implementation of methods for Xrm parsing.
+ */
+
+/* ======================= Unibyte implementation ======================= */
+
+/* Only for efficiency, to speed up things. */
+
+/* This implementation must keep the locale, for lcname. */
+typedef struct _UbStateRec {
+ XLCd lcd;
+} UbStateRec, *UbState;
+
+/* Sets the state to the initial state.
+ Initiates a sequence of calls to mbchar. */
+static void
+ub_mbinit(
+ XPointer state)
+{
+}
+
+/* Transforms one multibyte character, and return a 'char' in the same
+ parsing class. Returns the number of consumed bytes in *lenp. */
+static char
+ub_mbchar(
+ XPointer state,
+ const char *str,
+ int *lenp)
+{
+ *lenp = 1;
+ return *str;
+}
+
+/* Terminates a sequence of calls to mbchar. */
+static void
+ub_mbfinish(
+ XPointer state)
+{
+}
+
+/* Returns the name of the state's locale, as a static string. */
+static const char *
+ub_lcname(
+ XPointer state)
+{
+ return ((UbState) state)->lcd->core->name;
+}
+
+/* Frees the state, which was allocated by _XrmDefaultInitParseInfo. */
+static void
+ub_destroy(
+ XPointer state)
+{
+ _XCloseLC(((UbState) state)->lcd);
+ Xfree((char *) state);
+}
+
+static const XrmMethodsRec ub_methods = {
+ ub_mbinit,
+ ub_mbchar,
+ ub_mbfinish,
+ ub_lcname,
+ ub_destroy
+};
+
+/* ======================= Multibyte implementation ======================= */
+
+/* This implementation uses an XlcConv from XlcNMultiByte to XlcNWideChar. */
+typedef struct _MbStateRec {
+ XLCd lcd;
+ XlcConv conv;
+} MbStateRec, *MbState;
+
+/* Sets the state to the initial state.
+ Initiates a sequence of calls to mbchar. */
+static void
+mb_mbinit(
+ XPointer state)
+{
+ _XlcResetConverter(((MbState) state)->conv);
+}
+
+/* Transforms one multibyte character, and return a 'char' in the same
+ parsing class. Returns the number of consumed bytes in *lenp. */
+static char
+mb_mbchar(
+ XPointer state,
+ const char *str,
+ int *lenp)
+{
+ XlcConv conv = ((MbState) state)->conv;
+ const char *from;
+ wchar_t *to, wc;
+ int cur_max, i, from_left, to_left, ret;
+
+ cur_max = XLC_PUBLIC(((MbState) state)->lcd, mb_cur_max);
+
+ from = str;
+ /* Determine from_left. Avoid overrun error which could occur if
+ from_left > strlen(str). */
+ from_left = cur_max;
+ for (i = 0; i < cur_max; i++)
+ if (str[i] == '\0') {
+ from_left = i;
+ break;
+ }
+ *lenp = from_left;
+
+ to = &wc;
+ to_left = 1;
+
+ ret = _XlcConvert(conv, (XPointer *) &from, &from_left,
+ (XPointer *) &to, &to_left, NULL, 0);
+ *lenp -= from_left;
+
+ if (ret < 0 || to_left > 0) {
+ /* Invalid or incomplete multibyte character seen. */
+ *lenp = 1;
+ return 0x7f;
+ }
+ /* Return a 'char' equivalent to wc. */
+ return (wc >= 0 && wc <= 0x7f ? wc : 0x7f);
+}
+
+/* Terminates a sequence of calls to mbchar. */
+static void
+mb_mbfinish(
+ XPointer state)
+{
+}
+
+/* Returns the name of the state's locale, as a static string. */
+static const char *
+mb_lcname(
+ XPointer state)
+{
+ return ((MbState) state)->lcd->core->name;
+}
+
+/* Frees the state, which was allocated by _XrmDefaultInitParseInfo. */
+static void
+mb_destroy(
+ XPointer state)
+{
+ _XlcCloseConverter(((MbState) state)->conv);
+ _XCloseLC(((MbState) state)->lcd);
+ Xfree((char *) state);
+}
+
+static const XrmMethodsRec mb_methods = {
+ mb_mbinit,
+ mb_mbchar,
+ mb_mbfinish,
+ mb_lcname,
+ mb_destroy
+};
+
+/* ======================= Exported function ======================= */
+
+XrmMethods
+_XrmDefaultInitParseInfo(
+ XLCd lcd,
+ XPointer *rm_state)
+{
+ if (XLC_PUBLIC(lcd, mb_cur_max) == 1) {
+ /* Unibyte case. */
+ UbState state = (UbState) Xmalloc(sizeof(UbStateRec));
+ if (state == NULL)
+ return (XrmMethods) NULL;
+
+ state->lcd = lcd;
+
+ *rm_state = (XPointer) state;
+ return &ub_methods;
+ } else {
+ /* Multibyte case. */
+ MbState state = (MbState) Xmalloc(sizeof(MbStateRec));
+ if (state == NULL)
+ return (XrmMethods) NULL;
+
+ state->lcd = lcd;
+ state->conv = _XlcOpenConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar);
+ if (state->conv == NULL) {
+ Xfree((char *) state);
+ return (XrmMethods) NULL;
+ }
+
+ *rm_state = (XPointer) state;
+ return &mb_methods;
+ }
+}