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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_C
LIENT)) || defined(WIN16) | |
42 #include <stdio.h> | |
43 | |
44 PR_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 */ | |
77 typedef PRInt32 (PR_CALLBACK *PRStdinRead)( void *buf, PRInt32 amount); | |
78 typedef PRInt32 (PR_CALLBACK *PRStdoutWrite)( void *buf, PRInt32 amount); | |
79 typedef PRInt32 (PR_CALLBACK *PRStderrWrite)( void *buf, PRInt32 amount); | |
80 | |
81 NSPR_API(PRStatus) | |
82 PR_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 | |
88 NSPR_API(PRInt32) | |
89 _PL_W16StdioWrite( void *buf, PRInt32 amount ); | |
90 | |
91 NSPR_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 */ | |
102 struct 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 | |
114 NSPR_API(void) PR_MDRegisterCallbacks(struct PRMethodCallbackStr *); | |
115 | |
116 int PR_CALLBACK _PL_W16CallBackPuts( const char *outputString ); | |
117 size_t PR_CALLBACK _PL_W16CallBackStrftime( | |
118 char *s, | |
119 size_t len, | |
120 const char *fmt, | |
121 const struct tm *p ); | |
122 void * PR_CALLBACK _PL_W16CallBackMalloc( size_t size ); | |
123 void * PR_CALLBACK _PL_W16CallBackCalloc( size_t n, size_t size ); | |
124 void * PR_CALLBACK _PL_W16CallBackRealloc( | |
125 void *old_blk, | |
126 size_t size ); | |
127 void PR_CALLBACK _PL_W16CallBackFree( void *ptr ); | |
128 void * PR_CALLBACK _PL_W16CallBackGetenv( const char *name ); | |
129 int 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 */ | |
139 NSPR_API(int) PR_MD_printf(const char *, ...); | |
140 NSPR_API(void) PR_MD_exit(int); | |
141 NSPR_API(size_t) PR_MD_strftime(char *, size_t, const char *, const struct tm *
); | |
142 NSPR_API(int) PR_MD_sscanf(const char *, const char *, ...); | |
143 NSPR_API(void*) PR_MD_malloc( size_t size ); | |
144 NSPR_API(void*) PR_MD_calloc( size_t n, size_t size ); | |
145 NSPR_API(void*) PR_MD_realloc( void* old_blk, size_t size ); | |
146 NSPR_API(void) PR_MD_free( void *ptr ); | |
147 NSPR_API(char*) PR_MD_getenv( const char *name ); | |
148 NSPR_API(int) PR_MD_putenv( const char *assoc ); | |
149 NSPR_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 */ | |
170 NSPR_API(void *) PR_W16GetExceptionContext(void); | |
171 /* | |
172 ** Set the exception context for Win16 MFC applications threads | |
173 */ | |
174 NSPR_API(void) PR_W16SetExceptionContext(void *context); | |
175 | |
176 PR_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 | |
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