amiga-clib2/library/stdlib_showerror.c

/*
 * $Id: stdlib_showerror.c,v 1.14 2006-09-25 15:12:47 obarthel Exp $
 *
 * :ts=4
 *
 * Portable ISO 'C' (1994) runtime library for the Amiga computer
 * Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Neither the name of Olaf Barthel nor the names of contributors
 *     may be used to endorse or promote products derived from this
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef EXEC_LIBRARIES_H
#include <exec/libraries.h>
#endif /* EXEC_LIBRARIES_H */

#ifndef INTUITION_INTUITION_H
#include <intuition/intuition.h>
#endif /* INTUITION_INTUITION_H */

#ifndef DOS_DOS_H
#include <dos/dos.h>
#endif /* DOS_DOS_H */

#ifndef WORKBENCH_STARTUP_H
#include <workbench/startup.h>
#endif /* WORKBENCH_STARTUP_H */

/****************************************************************************/

#ifndef PROTO_EXEC_H
#include <proto/exec.h>
#endif /* PROTO_EXEC_H */

#define __NOLIBBASE__
#define __NOGLOBALIFACE__

#ifndef PROTO_INTUITION_H
#include <proto/intuition.h>
#endif /* PROTO_INTUITION_H */

#ifndef PROTO_DOS_H
#include <proto/dos.h>
#endif /* PROTO_DOS_H */

/****************************************************************************/

#include <string.h>

/****************************************************************************/

#ifndef _STDLIB_HEADERS_H
#include "stdlib_headers.h"
#endif /* _STDLIB_HEADERS_H */

#ifndef _STDIO_HEADERS_H
#include "stdio_headers.h"
#endif /* _STDIO_HEADERS_H */

/****************************************************************************/

#if NOT defined(__amigaos4__)

/****************************************************************************/

/* We use these short local versions of strlen() and bzero() so that this
   module does not need to depend upon other library code which, so it happens,
   might be built for the "wrong" CPU type. This is not a problem for the
   PowerPC build, but it is for the 68k build. */

/****************************************************************************/

INLINE STATIC size_t
local_strlen(const char *s)
{
	const char * start = s;
	size_t result = 0;

	while((*s) != '\0')
		s++;

	result = (size_t)(s - start);

	return(result);
}

/****************************************************************************/

INLINE STATIC void
local_bzero(void *ptr, size_t len)
{
	unsigned char * m = ptr;

	while(len-- > 0)
		(*m++) = 0;
}

/****************************************************************************/

#define strlen(s)			local_strlen(s)
#define memset(ptr,val,len)	local_bzero((ptr),(len))

/****************************************************************************/

#endif /* __amigaos4__ */

/****************************************************************************/

void
__show_error(const char * message)
{
	#if defined(__amigaos4__)
	struct IntuitionIFace *	IIntuition	= NULL;
	struct DOSIFace *		IDOS		= NULL;
	#endif /* __amigaos4__ */

	struct Library * IntuitionBase = NULL;
	struct Library * DOSBase = NULL;

	PROFILE_OFF();

	/* Don't show anything if this is the thread-safe library and
	   we were invoked indirectly by shared library startup code. */
	#if defined(__THREAD_SAFE)
	{
		if(__lib_startup)
			goto out;
	}
	#endif /* __THREAD_SAFE */

	DOSBase			= OpenLibrary("dos.library",0);
	IntuitionBase	= OpenLibrary("intuition.library",0);

	if(DOSBase == NULL || IntuitionBase == NULL)
		goto out;

	#if defined(__amigaos4__)
	{
		IDOS = (struct DOSIFace *)GetInterface(DOSBase, "main", 1, 0);
		if (IDOS == NULL)
			goto out;

		IIntuition = (struct IntuitionIFace *)GetInterface(IntuitionBase, "main", 1, 0);
		if (IIntuition == NULL)
			goto out;
	}
	#endif /* __amigaos4__ */

	/* If we can't hope to print the error message, show a requester instead. */
	if(__no_standard_io || __WBenchMsg != NULL)
	{
		UBYTE program_name[256];
		struct EasyStruct es;
		STRPTR title_string;

		/* The following does not make great sense on OS4. */
		#if NOT defined(__amigaos4__)
		{
			if(IntuitionBase->lib_Version < 37)
			{
				static struct TextAttr default_font	= { (STRPTR)"topaz.font",8,FS_NORMAL,FPF_ROMFONT|FPF_DESIGNED };
				static struct IntuiText sorry_text	= {0,1,JAM1,6,3,(struct TextAttr *)NULL,(STRPTR)"Sorry",(struct IntuiText *)NULL};
				static struct IntuiText body_text	= {0,1,JAM1,5,3,(struct TextAttr *)NULL,(STRPTR)NULL,(struct IntuiText *)NULL};

				sorry_text.ITextFont	= &default_font;
				body_text.ITextFont		= &default_font;

				body_text.IText = (STRPTR)message;

				AutoRequest(NULL,&body_text,NULL,&sorry_text,0,0,37 + 8 * strlen(message),46);

				goto out;
			}
		}
		#endif /* __amigaos4__ */

		if(__WBenchMsg != NULL)
		{
			title_string = (STRPTR)FilePart(__WBenchMsg->sm_ArgList[0].wa_Name);
		}
		else
		{
			if(GetProgramName((STRPTR)program_name,sizeof(program_name)))
				title_string = FilePart((STRPTR)program_name);
			else
				title_string = (STRPTR)"Error";
		}

		memset(&es,0,sizeof(es));

		es.es_StructSize	= sizeof(es);
		es.es_Title			= title_string;
		es.es_TextFormat	= (STRPTR)message;
		es.es_GadgetFormat	= (STRPTR)"Sorry";

		EasyRequestArgs(NULL,&es,NULL,NULL);
	}
	else
	{
		BPTR output;

		#if defined(__amigaos4__)
		{
			/* Try to print the error message on the default error output stream. */
			output = ErrorOutput();
		}
		#else
		{
			struct Process * this_process = (struct Process *)FindTask(NULL);

			output = this_process->pr_CES;
		}
		#endif /* __amigaos4__ */

		if(output == ZERO)
			output = Output();

		if(output != ZERO)
		{
			Write(output,(STRPTR)message,(LONG)strlen(message));
			Write(output,"\n",1);
		}
	}

 out:

	#if defined(__amigaos4__)
	{
		if(IIntuition != NULL)
			DropInterface((struct Interface *)IIntuition);

		if(IDOS != NULL)
			DropInterface((struct Interface *)IDOS);
	}
	#endif /* __amigaos4__ */

	if (IntuitionBase != NULL)
		CloseLibrary(IntuitionBase);

	if (DOSBase != NULL)
		CloseLibrary(DOSBase);

	PROFILE_ON();
}