/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* * 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 Netscape are * Copyright (C) 1998-2000 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the * terms of the GNU General Public License Version 2 or later (the * "GPL"), in which case the provisions of the GPL are applicable * instead of those above. If you wish to allow use of your * version of this file only under the terms of the GPL and not to * allow others to use your version of this file under the MPL, * indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by * the GPL. If you do not delete the provisions above, a recipient * may use your version of this file under either the MPL or the * GPL. */ #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___ */