/[dtapublic]/projs/trunk/shared_source/c_tcl_base_7_5_w_mods/tclinitscript.h
ViewVC logotype

Contents of /projs/trunk/shared_source/c_tcl_base_7_5_w_mods/tclinitscript.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 71 - (show annotations) (download)
Sat Nov 5 11:07:06 2016 UTC (7 years, 3 months ago) by dashley
File MIME type: text/plain
File size: 3312 byte(s)
Set EOL properties appropriately to facilitate simultaneous Linux and Windows development.
1 /* $Header$ */
2 /*
3 * tclInitScript.h --
4 *
5 * This file contains Unix & Windows common init script
6 * It is not used on the Mac. (the mac init script is in tclMacInit.c)
7 *
8 * Copyright (c) 1998 Sun Microsystems, Inc.
9 * Copyright (c) 1999 by Scriptics Corporation.
10 * All rights reserved.
11 *
12 * RCS: @(#) $Id: tclinitscript.h,v 1.1.1.1 2001/06/13 04:39:33 dtashley Exp $
13 */
14
15 /*
16 * In order to find init.tcl during initialization, the following script
17 * is invoked by Tcl_Init(). It looks in several different directories:
18 *
19 * $tcl_library - can specify a primary location, if set
20 * no other locations will be checked
21 *
22 * $env(TCL_LIBRARY) - highest priority so user can always override
23 * the search path unless the application has
24 * specified an exact directory above
25 *
26 * $tclDefaultLibrary - this value is initialized by TclPlatformInit
27 * from a static C variable that was set at
28 * compile time
29 *
30 * $tcl_libPath - this value is initialized by a call to
31 * TclGetLibraryPath called from Tcl_Init.
32 *
33 * The first directory on this path that contains a valid init.tcl script
34 * will be set as the value of tcl_library.
35 *
36 * Note that this entire search mechanism can be bypassed by defining an
37 * alternate tclInit procedure before calling Tcl_Init().
38 */
39
40 static char initScript[] = "if {[info proc tclInit]==\"\"} {\n\
41 proc tclInit {} {\n\
42 global tcl_libPath tcl_library errorInfo\n\
43 global env tclDefaultLibrary\n\
44 rename tclInit {}\n\
45 set errors {}\n\
46 set dirs {}\n\
47 if {[info exists tcl_library]} {\n\
48 lappend dirs $tcl_library\n\
49 } else {\n\
50 if {[info exists env(TCL_LIBRARY)]} {\n\
51 lappend dirs $env(TCL_LIBRARY)\n\
52 }\n\
53 lappend dirs $tclDefaultLibrary\n\
54 unset tclDefaultLibrary\n\
55 set dirs [concat $dirs $tcl_libPath]\n\
56 }\n\
57 foreach i $dirs {\n\
58 set tcl_library $i\n\
59 set tclfile [file join $i init.tcl]\n\
60 if {[file exists $tclfile]} {\n\
61 if {![catch {uplevel #0 [list source $tclfile]} msg]} {\n\
62 return\n\
63 } else {\n\
64 append errors \"$tclfile: $msg\n$errorInfo\n\"\n\
65 }\n\
66 }\n\
67 }\n\
68 set msg \"Can't find a usable init.tcl in the following directories: \n\"\n\
69 append msg \" $dirs\n\n\"\n\
70 append msg \"$errors\n\n\"\n\
71 append msg \"This probably means that Tcl wasn't installed properly.\n\"\n\
72 error $msg\n\
73 }\n\
74 }\n\
75 tclInit";
76
77
78 /*
79 * A pointer to a string that holds an initialization script that if non-NULL
80 * is evaluated in Tcl_Init() prior to the the built-in initialization script
81 * above. This variable can be modified by the procedure below.
82 */
83
84 static char * tclPreInitScript = NULL;
85
86
87 /*
88 *----------------------------------------------------------------------
89 *
90 * TclSetPreInitScript --
91 *
92 * This routine is used to change the value of the internal
93 * variable, tclPreInitScript.
94 *
95 * Results:
96 * Returns the current value of tclPreInitScript.
97 *
98 * Side effects:
99 * Changes the way Tcl_Init() routine behaves.
100 *
101 *----------------------------------------------------------------------
102 */
103
104 char *
105 TclSetPreInitScript (string)
106 char *string; /* Pointer to a script. */
107 {
108 char *prevString = tclPreInitScript;
109 tclPreInitScript = string;
110 return(prevString);
111 }
112
113 /* End of tclinitscript.h */

Properties

Name Value
svn:eol-style native
svn:keywords Header

dashley@gmail.com
ViewVC Help
Powered by ViewVC 1.1.25