1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2/* 3 * The contents of this file are subject to the Mozilla Public 4 * License Version 1.1 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of 6 * the License at http://www.mozilla.org/MPL/ 7 * 8 * Software distributed under the License is distributed on an "AS 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 10 * implied. See the License for the specific language governing 11 * rights and limitations under the License. 12 * 13 * The Original Code is the Netscape Portable Runtime (NSPR). 14 * 15 * The Initial Developer of the Original Code is Netscape 16 * Communications Corporation. Portions created by Netscape are 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All 18 * Rights Reserved. 19 * 20 * Contributor(s): 21 * 22 * Alternatively, the contents of this file may be used under the 23 * terms of the GNU General Public License Version 2 or later (the 24 * "GPL"), in which case the provisions of the GPL are applicable 25 * instead of those above. If you wish to allow use of your 26 * version of this file only under the terms of the GPL and not to 27 * allow others to use your version of this file under the MPL, 28 * indicate your decision by deleting the provisions above and 29 * replace them with the notice and other provisions required by 30 * the GPL. If you do not delete the provisions above, a recipient 31 * may use your version of this file under either the MPL or the 32 * GPL. 33 */ 34 35#ifndef prwin16_h___ 36#define prwin16_h___ 37 38/* 39** Condition use of this header on platform. 40*/ 41#if (defined(XP_PC) && !defined(_WIN32) && !defined(XP_OS2) && defined(MOZILLA_CLIENT)) || defined(WIN16) 42#include <stdio.h> 43 44PR_BEGIN_EXTERN_C 45/* 46** Win16 stdio special case. 47** To get stdio to work for Win16, all calls to printf() and related 48** things must be called from the environment of the .EXE; calls to 49** printf() from the .DLL send output to the bit-bucket. 50** 51** To make sure that PR_fprintf(), and related functions, work correctly, 52** the actual stream I/O to stdout, stderr, stdin must be done in the 53** .EXE. To do this, a hack is placed in _MD_Write() such that the 54** fd for stdio handles results in a call to the .EXE. 55** 56** file w16stdio.c contains the functions that get called from NSPR 57** to do the actual I/O. w16stdio.o must be statically linked with 58** any application needing stdio for Win16. 59** 60** The address of these functions must be made available to the .DLL 61** so he can call back to the .EXE. To do this, function 62** PR_MD_RegisterW16StdioCallbacks() is called from the .EXE. 63** The arguments are the functions defined in w16stdio.c 64** At runtime, MD_Write() calls the registered functions, if any 65** were registered. 66** 67** prinit.h contains a macro PR_STDIO_INIT() that calls the registration 68** function for Win16; For other platforms, the macro is a No-Op. 69** 70** Note that stdio is not operational at all on Win16 GUI applications. 71** This special case exists to provide stdio capability from the NSPR 72** .DLL for command line applications only. NSPR's test cases are 73** almost exclusively command line applications. 74** 75** See also: w16io.c, w16stdio.c 76*/ 77typedef PRInt32 (PR_CALLBACK *PRStdinRead)( void *buf, PRInt32 amount); 78typedef PRInt32 (PR_CALLBACK *PRStdoutWrite)( void *buf, PRInt32 amount); 79typedef PRInt32 (PR_CALLBACK *PRStderrWrite)( void *buf, PRInt32 amount); 80 81NSPR_API(PRStatus) 82PR_MD_RegisterW16StdioCallbacks( 83 PRStdinRead inReadf, /* i: function pointer for stdin read */ 84 PRStdoutWrite outWritef, /* i: function pointer for stdout write */ 85 PRStderrWrite errWritef /* i: function pointer for stderr write */ 86 ); 87 88NSPR_API(PRInt32) 89_PL_W16StdioWrite( void *buf, PRInt32 amount ); 90 91NSPR_API(PRInt32) 92_PL_W16StdioRead( void *buf, PRInt32 amount ); 93 94#define PR_STDIO_INIT() PR_MD_RegisterW16StdioCallbacks( \ 95 _PL_W16StdioRead, _PL_W16StdioWrite, _PL_W16StdioWrite ); \ 96 PR_INIT_CALLBACKS(); 97 98/* 99** Win16 hackery. 100** 101*/ 102struct PRMethodCallbackStr { 103 int (PR_CALLBACK *auxOutput)(const char *outputString); 104 size_t (PR_CALLBACK *strftime)(char *s, size_t len, const char *fmt, const struct tm *p); 105 void * (PR_CALLBACK *malloc)( size_t size ); 106 void * (PR_CALLBACK *calloc)(size_t n, size_t size ); 107 void * (PR_CALLBACK *realloc)( void* old_blk, size_t size ); 108 void (PR_CALLBACK *free)( void *ptr ); 109 void * (PR_CALLBACK *getenv)( const char *name); 110 int (PR_CALLBACK *putenv)( const char *assoc); 111/* void * (PR_CALLBACK *perror)( const char *prefix ); */ 112}; 113 114NSPR_API(void) PR_MDRegisterCallbacks(struct PRMethodCallbackStr *); 115 116int PR_CALLBACK _PL_W16CallBackPuts( const char *outputString ); 117size_t PR_CALLBACK _PL_W16CallBackStrftime( 118 char *s, 119 size_t len, 120 const char *fmt, 121 const struct tm *p ); 122void * PR_CALLBACK _PL_W16CallBackMalloc( size_t size ); 123void * PR_CALLBACK _PL_W16CallBackCalloc( size_t n, size_t size ); 124void * PR_CALLBACK _PL_W16CallBackRealloc( 125 void *old_blk, 126 size_t size ); 127void PR_CALLBACK _PL_W16CallBackFree( void *ptr ); 128void * PR_CALLBACK _PL_W16CallBackGetenv( const char *name ); 129int PR_CALLBACK _PL_W16CallBackPutenv( const char *assoc ); 130 131/* 132** Hackery! 133** 134** These functions are provided as static link points. 135** This is to satisfy the quick port of Gromit to NSPR 2.0 136** ... Don't do this! ... alas, It may never go away. 137** 138*/ 139NSPR_API(int) PR_MD_printf(const char *, ...); 140NSPR_API(void) PR_MD_exit(int); 141NSPR_API(size_t) PR_MD_strftime(char *, size_t, const char *, const struct tm *); 142NSPR_API(int) PR_MD_sscanf(const char *, const char *, ...); 143NSPR_API(void*) PR_MD_malloc( size_t size ); 144NSPR_API(void*) PR_MD_calloc( size_t n, size_t size ); 145NSPR_API(void*) PR_MD_realloc( void* old_blk, size_t size ); 146NSPR_API(void) PR_MD_free( void *ptr ); 147NSPR_API(char*) PR_MD_getenv( const char *name ); 148NSPR_API(int) PR_MD_putenv( const char *assoc ); 149NSPR_API(int) PR_MD_fprintf(FILE *fPtr, const char *fmt, ...); 150 151#define PR_INIT_CALLBACKS() \ 152 { \ 153 static struct PRMethodCallbackStr cbf = { \ 154 _PL_W16CallBackPuts, \ 155 _PL_W16CallBackStrftime, \ 156 _PL_W16CallBackMalloc, \ 157 _PL_W16CallBackCalloc, \ 158 _PL_W16CallBackRealloc, \ 159 _PL_W16CallBackFree, \ 160 _PL_W16CallBackGetenv, \ 161 _PL_W16CallBackPutenv, \ 162 }; \ 163 PR_MDRegisterCallbacks( &cbf ); \ 164 } 165 166 167/* 168** Get the exception context for Win16 MFC applications threads 169*/ 170NSPR_API(void *) PR_W16GetExceptionContext(void); 171/* 172** Set the exception context for Win16 MFC applications threads 173*/ 174NSPR_API(void) PR_W16SetExceptionContext(void *context); 175 176PR_END_EXTERN_C 177#else 178/* 179** For platforms other than Win16, define 180** PR_STDIO_INIT() as a No-Op. 181*/ 182#define PR_STDIO_INIT() 183#endif /* WIN16 || MOZILLA_CLIENT */ 184 185#endif /* prwin16_h___ */ 186 187 188 189 190 191 192 193 194