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path: root/libX11/src/xlibi18n/lcConv.c
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Diffstat (limited to 'libX11/src/xlibi18n/lcConv.c')
-rw-r--r--libX11/src/xlibi18n/lcConv.c341
1 files changed, 341 insertions, 0 deletions
diff --git a/libX11/src/xlibi18n/lcConv.c b/libX11/src/xlibi18n/lcConv.c
new file mode 100644
index 000000000..2f65ac7bd
--- /dev/null
+++ b/libX11/src/xlibi18n/lcConv.c
@@ -0,0 +1,341 @@
+/* $Xorg: lcConv.c,v 1.4 2000/08/17 19:45:17 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
+ */
+/* $XFree86: xc/lib/X11/lcConv.c,v 1.5 2000/12/04 18:49:26 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "XlcPubI.h"
+#include <stdio.h>
+
+typedef struct _XlcConverterListRec {
+ XLCd from_lcd;
+ const char *from;
+ XrmQuark from_type;
+ XLCd to_lcd;
+ const char *to;
+ XrmQuark to_type;
+ XlcOpenConverterProc converter;
+ struct _XlcConverterListRec *next;
+} XlcConverterListRec, *XlcConverterList;
+
+static XlcConverterList conv_list = NULL;
+
+static void
+close_converter(
+ XlcConv conv)
+{
+ (*conv->methods->close)(conv);
+}
+
+static XlcConv
+get_converter(
+ XLCd from_lcd,
+ XrmQuark from_type,
+ XLCd to_lcd,
+ XrmQuark to_type)
+{
+ XlcConverterList list, prev = NULL;
+
+ for (list = conv_list; list; list = list->next) {
+ if (list->from_lcd == from_lcd && list->to_lcd == to_lcd
+ && list->from_type == from_type && list->to_type == to_type) {
+
+ if (prev && prev != conv_list) { /* XXX */
+ prev->next = list->next;
+ list->next = conv_list;
+ conv_list = list;
+ }
+
+ return (*list->converter)(from_lcd, list->from, to_lcd, list->to);
+ }
+
+ prev = list;
+ }
+
+ return (XlcConv) NULL;
+}
+
+Bool
+_XlcSetConverter(
+ XLCd from_lcd,
+ const char *from,
+ XLCd to_lcd,
+ const char *to,
+ XlcOpenConverterProc converter)
+{
+ XlcConverterList list;
+ XrmQuark from_type, to_type;
+
+ from_type = XrmStringToQuark(from);
+ to_type = XrmStringToQuark(to);
+
+ for (list = conv_list; list; list = list->next) {
+ if (list->from_lcd == from_lcd && list->to_lcd == to_lcd
+ && list->from_type == from_type && list->to_type == to_type) {
+
+ list->converter = converter;
+ return True;
+ }
+ }
+
+ list = (XlcConverterList) Xmalloc(sizeof(XlcConverterListRec));
+ if (list == NULL)
+ return False;
+
+ list->from_lcd = from_lcd;
+ list->from = from;
+ list->from_type = from_type;
+ list->to_lcd = to_lcd;
+ list->to = to;
+ list->to_type = to_type;
+ list->converter = converter;
+ list->next = conv_list;
+ conv_list = list;
+
+ return True;
+}
+
+typedef struct _ConvRec {
+ XlcConv from_conv;
+ XlcConv to_conv;
+} ConvRec, *Conv;
+
+static int
+indirect_convert(
+ XlcConv lc_conv,
+ XPointer *from,
+ int *from_left,
+ XPointer *to,
+ int *to_left,
+ XPointer *args,
+ int num_args)
+{
+ Conv conv = (Conv) lc_conv->state;
+ XlcConv from_conv = conv->from_conv;
+ XlcConv to_conv = conv->to_conv;
+ XlcCharSet charset;
+ char buf[BUFSIZ], *cs;
+ XPointer tmp_args[1];
+ int cs_left, ret, length, unconv_num = 0;
+
+ if (from == NULL || *from == NULL) {
+ if (from_conv->methods->reset)
+ (*from_conv->methods->reset)(from_conv);
+
+ if (to_conv->methods->reset)
+ (*to_conv->methods->reset)(to_conv);
+
+ return 0;
+ }
+
+ while (*from_left > 0) {
+ cs = buf;
+ cs_left = BUFSIZ;
+ tmp_args[0] = (XPointer) &charset;
+
+ ret = (*from_conv->methods->convert)(from_conv, from, from_left, &cs,
+ &cs_left, tmp_args, 1);
+ if (ret < 0)
+ break;
+
+ unconv_num += ret;
+
+ length = cs - buf;
+ if (length > 0) {
+ cs_left = length;
+ cs = buf;
+
+ tmp_args[0] = (XPointer) charset;
+
+ ret = (*to_conv->methods->convert)(to_conv, &cs, &cs_left, to, to_left,
+ tmp_args, 1);
+ if (ret < 0) {
+ unconv_num += length / (charset->char_size > 0 ? charset->char_size : 1);
+ continue;
+ }
+
+ unconv_num += ret;
+
+ if (*to_left < 1)
+ break;
+ }
+ }
+
+ return unconv_num;
+}
+
+static void
+close_indirect_converter(
+ XlcConv lc_conv)
+{
+ Conv conv = (Conv) lc_conv->state;
+
+ if (conv) {
+ if (conv->from_conv)
+ close_converter(conv->from_conv);
+ if (conv->to_conv)
+ close_converter(conv->to_conv);
+
+ Xfree((char *) conv);
+ }
+
+ Xfree((char *) lc_conv);
+}
+
+static void
+reset_indirect_converter(
+ XlcConv lc_conv)
+{
+ Conv conv = (Conv) lc_conv->state;
+
+ if (conv) {
+ if (conv->from_conv && conv->from_conv->methods->reset)
+ (*conv->from_conv->methods->reset)(conv->from_conv);
+ if (conv->to_conv && conv->to_conv->methods->reset)
+ (*conv->to_conv->methods->reset)(conv->to_conv);
+ }
+}
+
+static XlcConvMethodsRec conv_methods = {
+ close_indirect_converter,
+ indirect_convert,
+ reset_indirect_converter
+} ;
+
+static XlcConv
+open_indirect_converter(
+ XLCd from_lcd,
+ const char *from,
+ XLCd to_lcd,
+ const char *to)
+{
+ XlcConv lc_conv, from_conv, to_conv;
+ Conv conv;
+ XrmQuark from_type, to_type;
+ static XrmQuark QChar, QCharSet, QCTCharSet = (XrmQuark) 0;
+
+ if (QCTCharSet == (XrmQuark) 0) {
+ QCTCharSet = XrmStringToQuark(XlcNCTCharSet);
+ QCharSet = XrmStringToQuark(XlcNCharSet);
+ QChar = XrmStringToQuark(XlcNChar);
+ }
+
+ from_type = XrmStringToQuark(from);
+ to_type = XrmStringToQuark(to);
+
+ if (from_type == QCharSet || from_type == QChar || to_type == QCharSet ||
+ to_type == QChar)
+ return (XlcConv) NULL;
+
+ lc_conv = (XlcConv) Xmalloc(sizeof(XlcConvRec));
+ if (lc_conv == NULL)
+ return (XlcConv) NULL;
+
+ lc_conv->methods = &conv_methods;
+
+ lc_conv->state = (XPointer) Xcalloc(1, sizeof(ConvRec));
+ if (lc_conv->state == NULL)
+ goto err;
+
+ conv = (Conv) lc_conv->state;
+
+ from_conv = get_converter(from_lcd, from_type, from_lcd, QCTCharSet);
+ if (from_conv == NULL)
+ from_conv = get_converter(from_lcd, from_type, from_lcd, QCharSet);
+ if (from_conv == NULL)
+ from_conv = get_converter((XLCd)NULL, from_type, (XLCd)NULL, QCharSet);
+ if (from_conv == NULL)
+ from_conv = get_converter(from_lcd, from_type, from_lcd, QChar);
+ if (from_conv == NULL)
+ goto err;
+ conv->from_conv = from_conv;
+
+ to_conv = get_converter(to_lcd, QCTCharSet, to_lcd, to_type);
+ if (to_conv == NULL)
+ to_conv = get_converter(to_lcd, QCharSet, to_lcd, to_type);
+ if (to_conv == NULL)
+ to_conv = get_converter((XLCd) NULL, QCharSet, (XLCd) NULL, to_type);
+ if (to_conv == NULL)
+ goto err;
+ conv->to_conv = to_conv;
+
+ return lc_conv;
+
+err:
+ close_indirect_converter(lc_conv);
+
+ return (XlcConv) NULL;
+}
+
+XlcConv
+_XlcOpenConverter(
+ XLCd from_lcd,
+ const char *from,
+ XLCd to_lcd,
+ const char *to)
+{
+ XlcConv conv;
+ XrmQuark from_type, to_type;
+
+ from_type = XrmStringToQuark(from);
+ to_type = XrmStringToQuark(to);
+
+ if ((conv = get_converter(from_lcd, from_type, to_lcd, to_type)))
+ return conv;
+
+ return open_indirect_converter(from_lcd, from, to_lcd, to);
+}
+
+void
+_XlcCloseConverter(
+ XlcConv conv)
+{
+ close_converter(conv);
+}
+
+int
+_XlcConvert(
+ XlcConv conv,
+ XPointer *from,
+ int *from_left,
+ XPointer *to,
+ int *to_left,
+ XPointer *args,
+ int num_args)
+{
+ return (*conv->methods->convert)(conv, from, from_left, to, to_left, args,
+ num_args);
+}
+
+void
+_XlcResetConverter(
+ XlcConv conv)
+{
+ if (conv->methods->reset)
+ (*conv->methods->reset)(conv);
+}
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