AOO410/main/vcl/unx/generic/app/i18n_wrp.cxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_vcl.hxx"

struct XIMArg 
{
    char *name;
    char *value;
};

#if defined(SOLARIS) && !defined(__GNUC__)
#include <varargs.h>
#else
#include <stdarg.h>
#endif
#include <sal/alloca.h>

#include <string.h>
#include <dlfcn.h>

#include <X11/Xlib.h>
#include <X11/Xlibint.h>
#include "unx/XIM.h"

#define XIIIMP_LIB		 "xiiimp.so.2"

#ifdef SOLARIS
#define XIIIMP_PATH     "/usr/openwin/lib/locale/common/" XIIIMP_LIB
#else /* Linux */
#define XIIIMP_PATH     "/usr/lib/im/" XIIIMP_LIB
#endif

extern "C" {
typedef XIM (*OpenFunction)(Display*, XrmDatabase, char*, char*, XIMArg*);
}

/* global variables */
static void *g_dlmodule = 0;
static OpenFunction g_open_im = (OpenFunction)NULL;

/* utility function to transform vararg list into an array of XIMArg */

int
XvaCountArgs( XIMArg *pInArgs )
{
	int nArgs = 0;
	char *pName, *pValue;

	while ( (pName = pInArgs->name) != NULL )
	{
		pValue = pInArgs->value;

		if ( strcmp(pName, XNVaNestedList) == 0 )
		{
			nArgs += XvaCountArgs( (XIMArg*)pValue );
		}
		else
		{
			nArgs += 1;
		}
		pInArgs++;
	}

	return nArgs;
}

int
XvaCountArgs( va_list pInArgs )
{
	int nArgs = 0;
	char *pName, *pValue;

	while ( (pName = va_arg(pInArgs, char*)) != NULL)
    {
		pValue = va_arg(pInArgs, char*);

		if ( strcmp(pName, XNVaNestedList) == 0 )
		{
			nArgs += XvaCountArgs( (XIMArg*)pValue );
		}
		else
		{
			nArgs += 1;
		}
	}

	return nArgs;
}

XIMArg*
XvaGetArgs( XIMArg *pInArgs, XIMArg *pOutArgs )
{
	char *pName, *pValue;

	while ( (pName = pInArgs->name) != NULL )
	{
		pValue = pInArgs->value;

		if ( strcmp(pName, XNVaNestedList) == 0 )
		{
			pOutArgs = XvaGetArgs( (XIMArg*)pValue, pOutArgs );
		}
		else
		{
			pOutArgs->name  = pName;
			pOutArgs->value = pValue;
			pOutArgs++;
		}
		pInArgs++;
	}

	return pOutArgs;
}

void
XvaGetArgs( va_list pInArgs, XIMArg *pOutArgs )
{
	char *pName, *pValue;

	while ((pName = va_arg(pInArgs, char*)) != NULL)
    {
		pValue = va_arg(pInArgs, char*);

		if ( strcmp(pName, XNVaNestedList) == 0 )
		{
			pOutArgs = XvaGetArgs( (XIMArg*)pValue, pOutArgs );
		}
		else
		{
			pOutArgs->name  = pName;
			pOutArgs->value = pValue;
			pOutArgs++;
		}
	}

	pOutArgs->name  = NULL;
	pOutArgs->value = NULL;
}


/* Puplic functions */

#ifdef __cplusplus
extern "C"
#endif
XIM 
XvaOpenIM(Display *display, XrmDatabase rdb, 
		char *res_name, char *res_class, ...)
{
  	XIM xim = (XIM)0;
  	va_list variable;
  	int total_count = 0;

  	/*
   	 * so count the stuff dangling here
     */
  
#if defined(SOLARIS) && !defined(__GNUC__)
  	va_start(variable);
#else
	va_start(variable, res_class);
#endif
  	total_count = XvaCountArgs(variable);
  	va_end(variable);

  	if (total_count > 0) 
	{ 
		/* call a new open IM method */

    	XIMArg* args = (XIMArg*)alloca( (total_count + 1) * sizeof(XIMArg) );

    	/*
     	 * now package it up so we can set it along
     	 */
#if defined(SOLARIS) && !defined(__GNUC__)
    	va_start(variable);
#else
    	va_start(variable, res_class);
#endif
		XvaGetArgs( variable, args );
    	va_end(variable);

    	if (!g_dlmodule) 
		{
            g_dlmodule = dlopen(XIIIMP_LIB, RTLD_LAZY);
            if(!g_dlmodule)
            {
                g_dlmodule = dlopen(XIIIMP_PATH, RTLD_LAZY);
                if (!g_dlmodule) 
                    goto legacy_XIM;
            }
      		g_open_im = (OpenFunction)(long)dlsym(g_dlmodule, "__XOpenIM");
      		if (!g_open_im) 
				goto legacy_XIM;

      		xim = (*g_open_im)(display, (XrmDatabase)rdb,
				  (char*)res_name, (char *)res_class, (XIMArg*)args);
    	} 
		else 
		{
      		goto legacy_XIM;
    	}
  	}

// in #if to prevent warning "warning: label 'legacy_XIM' defined but not used"
 	legacy_XIM:
    
	if (!xim)
    	xim = XOpenIM(display, rdb, res_name, res_class);
  
	return xim;
}

/*
 * Close the connection to the input manager, and free the XIM structure
 */

Status XvaCloseIM(XIM)
{
  	Status s = False;

	if (!g_dlmodule) 
	{		
		/* assuming one XvaOpenIM call */
    	dlclose(g_dlmodule);
   	 	g_dlmodule = (void*)0;
    	g_open_im = (OpenFunction)NULL;
        s = True;
  	}
	return (s);
}