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Diffstat (limited to '')
| -rw-r--r-- | nsprpub/pr/include/prwin16.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/nsprpub/pr/include/prwin16.h b/nsprpub/pr/include/prwin16.h new file mode 100644 index 0000000000..b545f04af0 --- /dev/null +++ b/nsprpub/pr/include/prwin16.h @@ -0,0 +1,164 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#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___ */ + + + + + + + + |