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OS/2 Shareware BBS: 10 Tools
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evbl0627.zip
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everblue_20010627.zip
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x11
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Xlc_Conv.c
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1999-11-02
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/* $XConsortium: lcConv.c /main/8 1996/09/28 16:37:28 rws $ */
/*
* 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
*/
#include "Xlib_private.h"
#include "XlcPubI.h"
#include <stdio.h>
typedef XlcConv (*XlcConverter)();
typedef struct _XlcConverterListRec {
XLCd from_lcd;
char *from;
XrmQuark from_type;
XLCd to_lcd;
char *to;
XrmQuark to_type;
XlcConverter converter;
struct _XlcConverterListRec *next;
} XlcConverterListRec, *XlcConverterList;
static XlcConverterList conv_list = NULL;
static void
close_converter(conv)
XlcConv conv;
{
DBUG_ENTER("close_converter")
(*conv->methods->close)(conv);
DBUG_VOID_RETURN;
}
static XlcConv
get_converter(from_lcd, from_type, to_lcd, to_type)
XLCd from_lcd;
XrmQuark from_type;
XLCd to_lcd;
XrmQuark to_type;
{
DBUG_ENTER("get_converter")
register 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) {
XlcConv result;
if (prev && prev != conv_list) { /* XXX */
prev->next = list->next;
list->next = conv_list;
conv_list = list;
}
result = (*list->converter)(from_lcd, list->from, to_lcd, list->to);
DBUG_RETURN(result);
}
prev = list;
}
DBUG_RETURN((XlcConv) NULL);
}
Bool
_XlcSetConverter(from_lcd, from, to_lcd, to, converter)
XLCd from_lcd;
char *from;
XLCd to_lcd;
char *to;
XlcOpenConverterProc converter;
{
DBUG_ENTER("_XlcSetConverter")
register XlcConverterList list;
register 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;
DBUG_RETURN(True);
}
}
list = (XlcConverterList) Xmalloc(sizeof(XlcConverterListRec));
if (list == NULL)
DBUG_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;
DBUG_RETURN(True);
}
typedef struct _ConvRec {
XlcConv from_conv;
XlcConv to_conv;
} ConvRec, *Conv;
static int
indirect_convert(lc_conv, from, from_left, to, to_left, args, num_args)
XlcConv lc_conv;
XPointer *from;
int *from_left;
XPointer *to;
int *to_left;
XPointer *args;
int num_args;
{
DBUG_ENTER("indirect_convert")
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);
DBUG_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;
length = cs_left = cs - buf;
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;
continue;
}
if (*to_left < 1)
break;
}
DBUG_RETURN(unconv_num);
}
static void
close_indirect_converter(lc_conv)
XlcConv lc_conv;
{
DBUG_ENTER("close_indirect_converter")
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);
DBUG_VOID_RETURN;
}
static void
reset_indirect_converter(lc_conv)
XlcConv lc_conv;
{
DBUG_ENTER("reset_indirect_converter")
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);
}
DBUG_VOID_RETURN;
}
static XlcConvMethodsRec conv_methods = {
close_indirect_converter,
indirect_convert,
reset_indirect_converter
} ;
static XlcConv
open_indirect_converter(from_lcd, from, to_lcd, to)
XLCd from_lcd;
char *from;
XLCd to_lcd;
char *to;
{
DBUG_ENTER("open_indirect_converter")
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)
DBUG_RETURN((XlcConv) NULL);
lc_conv = (XlcConv) Xmalloc(sizeof(XlcConvRec));
if (lc_conv == NULL)
DBUG_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;
DBUG_RETURN(lc_conv);
err:
close_indirect_converter(lc_conv);
DBUG_RETURN((XlcConv) NULL);
}
XlcConv
_XlcOpenConverter(from_lcd, from, to_lcd, to)
XLCd from_lcd;
char *from;
XLCd to_lcd;
char *to;
{
DBUG_ENTER("_XlcOpenConverter")
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)))
conv = open_indirect_converter(from_lcd, from, to_lcd, to);
DBUG_RETURN(conv);
}
void
_XlcCloseConverter(conv)
XlcConv conv;
{
DBUG_ENTER("_XlcCloseConverter")
close_converter(conv);
DBUG_VOID_RETURN;
}
int
_XlcConvert(conv, from, from_left, to, to_left, args, num_args)
XlcConv conv;
XPointer *from;
int *from_left;
XPointer *to;
int *to_left;
XPointer *args;
int num_args;
{
DBUG_ENTER("_XlcConvert")
int result = (*conv->methods->convert)(conv, from, from_left, to, to_left, args,
num_args);
DBUG_RETURN(result);
}
void
_XlcResetConverter(conv)
XlcConv conv;
{
DBUG_ENTER("_XlcResetConverter")
if (conv->methods->reset)
(*conv->methods->reset)(conv);
DBUG_VOID_RETURN;
}