1 files changed, 110 insertions, 0 deletions
diff --git a/generic/tclInitScript.h b/generic/tclInitScript.h
new file mode 100644
index 0000000..a3a1d6a
--- /dev/null
+++ b/generic/tclInitScript.h
@@ -0,0 +1,110 @@
+/* 
+ * tclInitScript.h --
+ *
+ *	This file contains Unix & Windows common init script
+ *      It is not used on the Mac. (the mac init script is in tclMacInit.c)
+ *
+ * Copyright (c) 1998 Sun Microsystems, Inc.
+ * Copyright (c) 1999 by Scriptics Corporation.
+ * All rights reserved.
+ */
+
+/*
+ * In order to find init.tcl during initialization, the following script
+ * is invoked by Tcl_Init().  It looks in several different directories:
+ *
+ *	$tcl_library		- can specify a primary location, if set
+ *				  no other locations will be checked
+ *
+ *	$env(TCL_LIBRARY)	- highest priority so user can always override
+ *				  the search path unless the application has
+ *				  specified an exact directory above
+ *
+ *	$tclDefaultLibrary	- this value is initialized by TclPlatformInit
+ *				  from a static C variable that was set at
+ *				  compile time
+ *
+ *	$tcl_libPath		- this value is initialized by a call to
+ *				  TclGetLibraryPath called from Tcl_Init.
+ *
+ * The first directory on this path that contains a valid init.tcl script
+ * will be set as the value of tcl_library.
+ *
+ * Note that this entire search mechanism can be bypassed by defining an
+ * alternate tclInit procedure before calling Tcl_Init().
+ */
+
+static char initScript[] = "if {[info proc tclInit]==\"\"} {\n\
+  proc tclInit {} {\n\
+    global tcl_libPath tcl_library errorInfo\n\
+    global env tclDefaultLibrary\n\
+    rename tclInit {}\n\
+    set errors {}\n\
+    set dirs {}\n\
+    if {[info exists tcl_library]} {\n\
+	lappend dirs $tcl_library\n\
+    } else {\n\
+	if {[info exists env(TCL_LIBRARY)]} {\n\
+	    lappend dirs $env(TCL_LIBRARY)\n\
+	}\n\
+	catch {\n\
+	    lappend dirs $tclDefaultLibrary\n\
+	    unset tclDefaultLibrary\n\
+	}\n\
+        set dirs [concat $dirs $tcl_libPath]\n\
+    }\n\
+    foreach i $dirs {\n\
+	set tcl_library $i\n\
+	set tclfile [file join $i init.tcl]\n\
+	if {[file exists $tclfile]} {\n\
+	    if {![catch {uplevel #0 [list source $tclfile]} msg]} {\n\
+		return\n\
+	    } else {\n\
+		append errors \"$tclfile: $msg\n$errorInfo\n\"\n\
+	    }\n\
+	}\n\
+    }\n\
+    set msg \"Can't find a usable init.tcl in the following directories: \n\"\n\
+    append msg \"    $dirs\n\n\"\n\
+    append msg \"$errors\n\n\"\n\
+    append msg \"This probably means that Tcl wasn't installed properly.\n\"\n\
+    error $msg\n\
+  }\n\
+}\n\
+tclInit";
+
+
+/*
+ * A pointer to a string that holds an initialization script that if non-NULL
+ * is evaluated in Tcl_Init() prior to the the built-in initialization script
+ * above.  This variable can be modified by the procedure below.
+ */
+ 
+static char *          tclPreInitScript = NULL;
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetPreInitScript --
+ *
+ *	This routine is used to change the value of the internal
+ *	variable, tclPreInitScript.
+ *
+ * Results:
+ *	Returns the current value of tclPreInitScript.
+ *
+ * Side effects:
+ *	Changes the way Tcl_Init() routine behaves.
+ *
+ *----------------------------------------------------------------------
+ */
+
+char *
+TclSetPreInitScript (string)
+    char *string;		/* Pointer to a script. */
+{
+    char *prevString = tclPreInitScript;
+    tclPreInitScript = string;
+    return(prevString);
+}