prwin16.h
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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (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.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the Netscape Portable Runtime (NSPR).
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef prwin16_h___
- #define prwin16_h___
- /*
- ** Condition use of this header on platform.
- */
- #if (defined(XP_PC) && !defined(_WIN32) && !defined(XP_OS2) && defined(MOZILLA_CLIENT)) || defined(WIN16)
- #include <stdio.h>
- PR_BEGIN_EXTERN_C
- /*
- ** Win16 stdio special case.
- ** To get stdio to work for Win16, all calls to printf() and related
- ** things must be called from the environment of the .EXE; calls to
- ** printf() from the .DLL send output to the bit-bucket.
- **
- ** To make sure that PR_fprintf(), and related functions, work correctly,
- ** the actual stream I/O to stdout, stderr, stdin must be done in the
- ** .EXE. To do this, a hack is placed in _MD_Write() such that the
- ** fd for stdio handles results in a call to the .EXE.
- **
- ** file w16stdio.c contains the functions that get called from NSPR
- ** to do the actual I/O. w16stdio.o must be statically linked with
- ** any application needing stdio for Win16.
- **
- ** The address of these functions must be made available to the .DLL
- ** so he can call back to the .EXE. To do this, function
- ** PR_MD_RegisterW16StdioCallbacks() is called from the .EXE.
- ** The arguments are the functions defined in w16stdio.c
- ** At runtime, MD_Write() calls the registered functions, if any
- ** were registered.
- **
- ** prinit.h contains a macro PR_STDIO_INIT() that calls the registration
- ** function for Win16; For other platforms, the macro is a No-Op.
- **
- ** Note that stdio is not operational at all on Win16 GUI applications.
- ** This special case exists to provide stdio capability from the NSPR
- ** .DLL for command line applications only. NSPR's test cases are
- ** almost exclusively command line applications.
- **
- ** See also: w16io.c, w16stdio.c
- */
- typedef PRInt32 (PR_CALLBACK *PRStdinRead)( void *buf, PRInt32 amount);
- typedef PRInt32 (PR_CALLBACK *PRStdoutWrite)( void *buf, PRInt32 amount);
- typedef PRInt32 (PR_CALLBACK *PRStderrWrite)( void *buf, PRInt32 amount);
- NSPR_API(PRStatus)
- PR_MD_RegisterW16StdioCallbacks(
- PRStdinRead inReadf, /* i: function pointer for stdin read */
- PRStdoutWrite outWritef, /* i: function pointer for stdout write */
- PRStderrWrite errWritef /* i: function pointer for stderr write */
- );
- NSPR_API(PRInt32)
- _PL_W16StdioWrite( void *buf, PRInt32 amount );
- NSPR_API(PRInt32)
- _PL_W16StdioRead( void *buf, PRInt32 amount );
- #define PR_STDIO_INIT() PR_MD_RegisterW16StdioCallbacks(
- _PL_W16StdioRead, _PL_W16StdioWrite, _PL_W16StdioWrite );
- PR_INIT_CALLBACKS();
- /*
- ** Win16 hackery.
- **
- */
- struct PRMethodCallbackStr {
- int (PR_CALLBACK *auxOutput)(const char *outputString);
- size_t (PR_CALLBACK *strftime)(char *s, size_t len, const char *fmt, const struct tm *p);
- void * (PR_CALLBACK *malloc)( size_t size );
- void * (PR_CALLBACK *calloc)(size_t n, size_t size );
- void * (PR_CALLBACK *realloc)( void* old_blk, size_t size );
- void (PR_CALLBACK *free)( void *ptr );
- void * (PR_CALLBACK *getenv)( const char *name);
- int (PR_CALLBACK *putenv)( const char *assoc);
- /* void * (PR_CALLBACK *perror)( const char *prefix ); */
- };
- NSPR_API(void) PR_MDRegisterCallbacks(struct PRMethodCallbackStr *);
- int PR_CALLBACK _PL_W16CallBackPuts( const char *outputString );
- size_t PR_CALLBACK _PL_W16CallBackStrftime(
- char *s,
- size_t len,
- const char *fmt,
- const struct tm *p );
- void * PR_CALLBACK _PL_W16CallBackMalloc( size_t size );
- void * PR_CALLBACK _PL_W16CallBackCalloc( size_t n, size_t size );
- void * PR_CALLBACK _PL_W16CallBackRealloc(
- void *old_blk,
- size_t size );
- void PR_CALLBACK _PL_W16CallBackFree( void *ptr );
- void * PR_CALLBACK _PL_W16CallBackGetenv( const char *name );
- int PR_CALLBACK _PL_W16CallBackPutenv( const char *assoc );
- /*
- ** Hackery!
- **
- ** These functions are provided as static link points.
- ** This is to satisfy the quick port of Gromit to NSPR 2.0
- ** ... Don't do this! ... alas, It may never go away.
- **
- */
- NSPR_API(int) PR_MD_printf(const char *, ...);
- NSPR_API(void) PR_MD_exit(int);
- NSPR_API(size_t) PR_MD_strftime(char *, size_t, const char *, const struct tm *);
- NSPR_API(int) PR_MD_sscanf(const char *, const char *, ...);
- NSPR_API(void*) PR_MD_malloc( size_t size );
- NSPR_API(void*) PR_MD_calloc( size_t n, size_t size );
- NSPR_API(void*) PR_MD_realloc( void* old_blk, size_t size );
- NSPR_API(void) PR_MD_free( void *ptr );
- NSPR_API(char*) PR_MD_getenv( const char *name );
- NSPR_API(int) PR_MD_putenv( const char *assoc );
- NSPR_API(int) PR_MD_fprintf(FILE *fPtr, const char *fmt, ...);
- #define PR_INIT_CALLBACKS()
- {
- static struct PRMethodCallbackStr cbf = {
- _PL_W16CallBackPuts,
- _PL_W16CallBackStrftime,
- _PL_W16CallBackMalloc,
- _PL_W16CallBackCalloc,
- _PL_W16CallBackRealloc,
- _PL_W16CallBackFree,
- _PL_W16CallBackGetenv,
- _PL_W16CallBackPutenv,
- };
- PR_MDRegisterCallbacks( &cbf );
- }
- /*
- ** Get the exception context for Win16 MFC applications threads
- */
- NSPR_API(void *) PR_W16GetExceptionContext(void);
- /*
- ** Set the exception context for Win16 MFC applications threads
- */
- NSPR_API(void) PR_W16SetExceptionContext(void *context);
- PR_END_EXTERN_C
- #else
- /*
- ** For platforms other than Win16, define
- ** PR_STDIO_INIT() as a No-Op.
- */
- #define PR_STDIO_INIT()
- #endif /* WIN16 || MOZILLA_CLIENT */
- #endif /* prwin16_h___ */