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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/*
* tclUnixInit.c --
*
* Contains the Unix-specific interpreter initialization functions.
*
* Copyright (c) 1995-1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* SCCS: @(#) tclUnixInit.c 1.26 97/08/05 20:09:25
*/
#include "tclInt.h"
#include "tclPort.h"
#if defined(__FreeBSD__)
# include <floatingpoint.h>
#endif
#if defined(__bsdi__)
# include <sys/param.h>
# if _BSDI_VERSION > 199501
# include <dlfcn.h>
# endif
#endif
/*
* Default directory in which to look for Tcl library scripts. The
* symbol is defined by Makefile.
*/
static char defaultLibraryDir[sizeof(TCL_LIBRARY)+200] = TCL_LIBRARY;
/*
* Directory in which to look for packages (each package is typically
* installed as a subdirectory of this directory). The symbol is
* defined by Makefile.
*/
static char pkgPath[sizeof(TCL_PACKAGE_PATH)+200] = TCL_PACKAGE_PATH;
/*
* Is this module initialized?
*/
static int initialized = 0;
/*
* The Init script (common to Windows and Unix platforms) is
* defined in tclInitScript.h
*/
#include "tclInitScript.h"
/*
* Static routines in this file:
*/
static void PlatformInitExitHandler _ANSI_ARGS_((ClientData clientData));
/*
*----------------------------------------------------------------------
*
* PlatformInitExitHandler --
*
* Uninitializes all values on unload, so that this module can
* be later reinitialized.
*
* Results:
* None.
*
* Side effects:
* Returns the module to uninitialized state.
*
*----------------------------------------------------------------------
*/
static void
PlatformInitExitHandler(clientData)
ClientData clientData; /* Unused. */
{
strcpy(defaultLibraryDir, TCL_LIBRARY);
strcpy(pkgPath, TCL_PACKAGE_PATH);
initialized = 0;
}
/*
*----------------------------------------------------------------------
*
* TclPlatformInit --
*
* Performs Unix-specific interpreter initialization related to the
* tcl_library and tcl_platform variables, and other platform-
* specific things.
*
* Results:
* None.
*
* Side effects:
* Sets "tcl_library" and "tcl_platform" Tcl variables.
*
*----------------------------------------------------------------------
*/
void
TclPlatformInit(interp)
Tcl_Interp *interp;
{
#ifndef NO_UNAME
struct utsname name;
#endif
int unameOK;
tclPlatform = TCL_PLATFORM_UNIX;
Tcl_SetVar(interp, "tcl_library", defaultLibraryDir, TCL_GLOBAL_ONLY);
Tcl_SetVar(interp, "tcl_pkgPath", pkgPath, TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, "tcl_platform", "platform", "unix", TCL_GLOBAL_ONLY);
unameOK = 0;
#ifndef NO_UNAME
if (uname(&name) >= 0) {
unameOK = 1;
Tcl_SetVar2(interp, "tcl_platform", "os", name.sysname,
TCL_GLOBAL_ONLY);
/*
* The following code is a special hack to handle differences in
* the way version information is returned by uname. On most
* systems the full version number is available in name.release.
* However, under AIX the major version number is in
* name.version and the minor version number is in name.release.
*/
if ((strchr(name.release, '.') != NULL)
|| !isdigit(UCHAR(name.version[0]))) {
Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.release,
TCL_GLOBAL_ONLY);
} else {
Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.version,
TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, "tcl_platform", "osVersion", ".",
TCL_GLOBAL_ONLY|TCL_APPEND_VALUE);
Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.release,
TCL_GLOBAL_ONLY|TCL_APPEND_VALUE);
}
Tcl_SetVar2(interp, "tcl_platform", "machine", name.machine,
TCL_GLOBAL_ONLY);
}
#endif
if (!unameOK) {
Tcl_SetVar2(interp, "tcl_platform", "os", "", TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, "tcl_platform", "osVersion", "", TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, "tcl_platform", "machine", "", TCL_GLOBAL_ONLY);
}
if (!initialized) {
/*
* Create an exit handler so that uninitialization will be done
* on unload.
*/
Tcl_CreateExitHandler(PlatformInitExitHandler, NULL);
/*
* The code below causes SIGPIPE (broken pipe) errors to
* be ignored. This is needed so that Tcl processes don't
* die if they create child processes (e.g. using "exec" or
* "open") that terminate prematurely. The signal handler
* is only set up when the first interpreter is created;
* after this the application can override the handler with
* a different one of its own, if it wants.
*/
#ifdef SIGPIPE
(void) signal(SIGPIPE, SIG_IGN);
#endif /* SIGPIPE */
#ifdef __FreeBSD__
fpsetround(FP_RN);
fpsetmask(0L);
#endif
#if defined(__bsdi__) && (_BSDI_VERSION > 199501)
/*
* Find local symbols. Don't report an error if we fail.
*/
(void) dlopen (NULL, RTLD_NOW);
#endif
initialized = 1;
}
}
/*
*----------------------------------------------------------------------
*
* Tcl_Init --
*
* This procedure is typically invoked by Tcl_AppInit procedures
* to perform additional initialization for a Tcl interpreter,
* such as sourcing the "init.tcl" script.
*
* Results:
* Returns a standard Tcl completion code and sets interp->result
* if there is an error.
*
* Side effects:
* Depends on what's in the init.tcl script.
*
*----------------------------------------------------------------------
*/
int
Tcl_Init(interp)
Tcl_Interp *interp; /* Interpreter to initialize. */
{
return Tcl_Eval(interp, initScript);
}
/*
*----------------------------------------------------------------------
*
* Tcl_SourceRCFile --
*
* This procedure is typically invoked by Tcl_Main of Tk_Main
* procedure to source an application specific rc file into the
* interpreter at startup time.
*
* Results:
* None.
*
* Side effects:
* Depends on what's in the rc script.
*
*----------------------------------------------------------------------
*/
void
Tcl_SourceRCFile(interp)
Tcl_Interp *interp; /* Interpreter to source rc file into. */
{
Tcl_DString temp;
char *fileName;
Tcl_Channel errChannel;
fileName = Tcl_GetVar(interp, "tcl_rcFileName", TCL_GLOBAL_ONLY);
if (fileName != NULL) {
Tcl_Channel c;
char *fullName;
Tcl_DStringInit(&temp);
fullName = Tcl_TranslateFileName(interp, fileName, &temp);
if (fullName == NULL) {
/*
* Couldn't translate the file name (e.g. it referred to a
* bogus user or there was no HOME environment variable).
* Just do nothing.
*/
} else {
/*
* Test for the existence of the rc file before trying to read it.
*/
c = Tcl_OpenFileChannel(NULL, fullName, "r", 0);
if (c != (Tcl_Channel) NULL) {
Tcl_Close(NULL, c);
if (Tcl_EvalFile(interp, fullName) != TCL_OK) {
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (errChannel) {
Tcl_Write(errChannel, interp->result, -1);
Tcl_Write(errChannel, "\n", 1);
}
}
}
}
Tcl_DStringFree(&temp);
}
}
|
