1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* tkStubLib.c --
*
* Stub object that will be statically linked into extensions that wish
* to access Tk.
*
* Copyright (c) 1998 Paul Duffin.
* Copyright (c) 1998-1999 by Scriptics Corporation.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkStubLib.c,v 1.20.2.1 2008/04/02 04:05:13 dgp Exp $
*/
/*
* We need to ensure that we use the stub macros so that this file contains no
* references to any of the stub functions. This will make it possible to
* build an extension that references Tk_InitStubs but doesn't end up
* including the rest of the stub functions.
*/
#ifndef USE_TCL_STUBS
#define USE_TCL_STUBS
#endif
#undef USE_TCL_STUB_PROCS
#ifndef USE_TK_STUBS
#define USE_TK_STUBS
#endif
#undef USE_TK_STUB_PROCS
#include "tkInt.h"
#ifdef __WIN32__
#include "tkWinInt.h"
#endif
#ifdef MAC_OSX_TK
#include "tkMacOSXInt.h"
#endif
#if !(defined(__WIN32__) || defined(MAC_OSX_TK))
#include "tkUnixInt.h"
#endif
/* TODO: These ought to come in some other way */
#include "tkPlatDecls.h"
#include "tkIntXlibDecls.h"
TkStubs *tkStubsPtr = NULL;
TkPlatStubs *tkPlatStubsPtr = NULL;
TkIntStubs *tkIntStubsPtr = NULL;
TkIntPlatStubs *tkIntPlatStubsPtr = NULL;
TkIntXlibStubs *tkIntXlibStubsPtr = NULL;
/*
* Use our own isdigit to avoid linking to libc on windows
*/
static int isDigit(const int c)
{
return (c >= '0' && c <= '9');
}
/*
*----------------------------------------------------------------------
*
* Tk_InitStubs --
*
* Checks that the correct version of Tk is loaded and that it supports
* stubs. It then initialises the stub table pointers.
*
* Results:
* The actual version of Tk that satisfies the request, or NULL to
* indicate that an error occurred.
*
* Side effects:
* Sets the stub table pointers.
*
*----------------------------------------------------------------------
*/
#ifdef Tk_InitStubs
#undef Tk_InitStubs
#endif
CONST char *
Tk_InitStubs(
Tcl_Interp *interp,
CONST char *version,
int exact)
{
CONST char *actualVersion;
TkStubs **stubsPtrPtr = &tkStubsPtr; /* squelch warning */
actualVersion = Tcl_PkgRequireEx(interp, "Tk", version, 0,
(ClientData *) stubsPtrPtr);
if (!actualVersion) {
return NULL;
}
if (exact) {
CONST char *p = version;
int count = 0;
while (*p) {
count += !isDigit(*p++);
}
if (count == 1) {
CONST char *q = actualVersion;
p = version;
while (*p && (*p == *q)) {
p++; q++;
}
if (*p) {
/* Construct error message */
Tcl_PkgRequireEx(interp, "Tk", version, 1, NULL);
return NULL;
}
} else {
actualVersion = Tcl_PkgRequireEx(interp, "Tk", version, 1, NULL);
if (actualVersion == NULL) {
return NULL;
}
}
}
if (!tkStubsPtr) {
Tcl_SetResult(interp,
"This implementation of Tk does not support stubs",
TCL_STATIC);
return NULL;
}
tkPlatStubsPtr = tkStubsPtr->hooks->tkPlatStubs;
tkIntStubsPtr = tkStubsPtr->hooks->tkIntStubs;
tkIntPlatStubsPtr = tkStubsPtr->hooks->tkIntPlatStubs;
tkIntXlibStubsPtr = tkStubsPtr->hooks->tkIntXlibStubs;
return actualVersion;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
|
