#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) {
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);
}