archie/tcl7.6/mac/tclMacInit.c
2024-05-27 16:40:40 +02:00

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/*
* tclMacInit.c --
*
* Contains the Mac-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: @(#) tclMacInit.c 1.29 96/10/04 14:47:28
*/
#include <Files.h>
#include <Gestalt.h>
#include <TextUtils.h>
#include <Resources.h>
#include <Strings.h>
#include "tclInt.h"
#include "tclMacInt.h"
/*
*----------------------------------------------------------------------
*
* TclPlatformInit --
*
* Performs Mac-specific interpreter initialization related to the
* tcl_platform and tcl_library variables.
*
* Results:
* None.
*
* Side effects:
* Sets "tcl_library" & "tcl_platfrom" Tcl variable
*
*----------------------------------------------------------------------
*/
void
TclPlatformInit(interp)
Tcl_Interp *interp;
{
char *libDir;
Tcl_DString path, libPath;
long int gestaltResult;
int minor, major;
char versStr[10];
/*
* Set runtime C variable that tells cross platform C functions
* what platform they are running on. This can change at
* runtime for testing purposes.
*/
tclPlatform = TCL_PLATFORM_MAC;
/*
* Define the tcl_platfrom variable.
*/
Tcl_SetVar2(interp, "tcl_platform", "platform", "macintosh",
TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, "tcl_platform", "os", "MacOS", TCL_GLOBAL_ONLY);
Gestalt(gestaltSystemVersion, &gestaltResult);
major = (gestaltResult & 0x0000FF00) >> 8;
minor = (gestaltResult & 0x000000F0) >> 4;
sprintf(versStr, "%d.%d", major, minor);
Tcl_SetVar2(interp, "tcl_platform", "osVersion", versStr, TCL_GLOBAL_ONLY);
#if GENERATINGPOWERPC
Tcl_SetVar2(interp, "tcl_platform", "machine", "ppc", TCL_GLOBAL_ONLY);
#else
Tcl_SetVar2(interp, "tcl_platform", "machine", "68k", TCL_GLOBAL_ONLY);
#endif
/*
* The tcl_library path can be found in one of two places. As an element
* in the env array. Or the default which is to a folder in side the
* Extensions folder of your system.
*/
Tcl_DStringInit(&path);
libDir = Tcl_GetVar2(interp, "env", "TCL_LIBRARY", TCL_GLOBAL_ONLY);
if (libDir != NULL) {
Tcl_SetVar(interp, "tcl_library", libDir, TCL_GLOBAL_ONLY);
} else {
libDir = Tcl_GetVar2(interp, "env", "EXT_FOLDER", TCL_GLOBAL_ONLY);
if (libDir != NULL) {
Tcl_JoinPath(1, &libDir, &path);
Tcl_DStringInit(&libPath);
Tcl_DStringAppend(&libPath, ":Tool Command Language:tcl", -1);
Tcl_DStringAppend(&libPath, TCL_VERSION, -1);
Tcl_JoinPath(1, &libPath.string, &path);
Tcl_DStringFree(&libPath);
Tcl_SetVar(interp, "tcl_library", path.string, TCL_GLOBAL_ONLY);
} else {
Tcl_SetVar(interp, "tcl_library", "no library", TCL_GLOBAL_ONLY);
}
}
/*
* Now create the tcl_pkgPath variable.
*/
Tcl_DStringSetLength(&path, 0);
libDir = Tcl_GetVar2(interp, "env", "EXT_FOLDER", TCL_GLOBAL_ONLY);
if (libDir != NULL) {
Tcl_JoinPath(1, &libDir, &path);
libDir = ":Tool Command Language:";
Tcl_JoinPath(1, &libDir, &path);
Tcl_SetVar(interp, "tcl_pkgPath", path.string,
TCL_GLOBAL_ONLY|TCL_LIST_ELEMENT);
} else {
Tcl_SetVar(interp, "tcl_pkgPath", "no extension folder",
TCL_GLOBAL_ONLY);
}
Tcl_DStringFree(&path);
}
/*
*----------------------------------------------------------------------
*
* 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. */
{
static char initCmd[] =
"if {[catch {source -rsrc Init}] != 0} {\n\
if [file exists [info library]:init.tcl] {\n\
source [info library]:init.tcl\n\
} else {\n\
set msg \"can't find Init resource or [info library]:init.tcl;\"\n\
append msg \" perhaps you need to\\ninstall Tcl or set your \"\n\
append msg \"TCL_LIBRARY environment variable?\"\n\
error $msg\n\
}\n}";
/*
* For Macintosh applications the Init function may be contained in
* the application resources. If it exists we use it - otherwise we
* look in the tcl_library directory.
*/
return Tcl_Eval(interp, initCmd);
}
/*
*----------------------------------------------------------------------
*
* Tcl_SourceRCFile --
*
* This procedure is typically invoked by Tcl_Main or Tk_Main
* procedure to source an application specific rc file into the
* interpreter at startup time. This will either source a file
* in the "tcl_rcFileName" variable or a TEXT resource in the
* "tcl_rcRsrcName" variable.
*
* 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;
Handle h;
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) {
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (errChannel) {
Tcl_Write(errChannel, interp->result, -1);
Tcl_Write(errChannel, "\n", 1);
}
} 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);
}
fileName = Tcl_GetVar(interp, "tcl_rcRsrcName", TCL_GLOBAL_ONLY);
if (fileName != NULL) {
c2pstr(fileName);
h = GetNamedResource('TEXT', (StringPtr) fileName);
p2cstr((StringPtr) fileName);
if (h != NULL) {
if (TclMacEvalResource(interp, fileName, 0, NULL) != TCL_OK) {
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (errChannel) {
Tcl_Write(errChannel, interp->result, -1);
Tcl_Write(errChannel, "\n", 1);
}
}
Tcl_ResetResult(interp);
ReleaseResource(h);
}
}
}