#include "tclInt.h"
typedef struct LoadedPackage {
char *fileName;
char *packageName;
Tcl_LoadHandle loadHandle;
Tcl_PackageInitProc *initProc;
Tcl_PackageInitProc *safeInitProc;
Tcl_FSUnloadFileProc *unLoadProcPtr;
struct LoadedPackage *nextPtr;
} LoadedPackage;
static LoadedPackage *firstPackagePtr = NULL;
TCL_DECLARE_MUTEX(packageMutex)
typedef struct InterpPackage {
LoadedPackage *pkgPtr;
struct InterpPackage *nextPtr;
} InterpPackage;
static void LoadCleanupProc _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp));
int
Tcl_LoadObjCmd(dummy, interp, objc, objv)
ClientData dummy;
Tcl_Interp *interp;
int objc;
Tcl_Obj *CONST objv[];
{
Tcl_Interp *target;
LoadedPackage *pkgPtr, *defaultPtr;
Tcl_DString pkgName, tmp, initName, safeInitName;
Tcl_PackageInitProc *initProc, *safeInitProc;
InterpPackage *ipFirstPtr, *ipPtr;
int code, namesMatch, filesMatch;
char *p, *fullFileName, *packageName;
Tcl_LoadHandle loadHandle;
Tcl_FSUnloadFileProc *unLoadProcPtr = NULL;
Tcl_UniChar ch;
int offset;
if ((objc < 2) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 1, objv, "fileName ?packageName? ?interp?");
return TCL_ERROR;
}
if (Tcl_FSConvertToPathType(interp, objv[1]) != TCL_OK) {
return TCL_ERROR;
}
fullFileName = Tcl_GetString(objv[1]);
Tcl_DStringInit(&pkgName);
Tcl_DStringInit(&initName);
Tcl_DStringInit(&safeInitName);
Tcl_DStringInit(&tmp);
packageName = NULL;
if (objc >= 3) {
packageName = Tcl_GetString(objv[2]);
if (packageName[0] == '\0') {
packageName = NULL;
}
}
if ((fullFileName[0] == 0) && (packageName == NULL)) {
Tcl_SetResult(interp,
"must specify either file name or package name",
TCL_STATIC);
code = TCL_ERROR;
goto done;
}
target = interp;
if (objc == 4) {
char *slaveIntName;
slaveIntName = Tcl_GetString(objv[3]);
target = Tcl_GetSlave(interp, slaveIntName);
if (target == NULL) {
return TCL_ERROR;
}
}
Tcl_MutexLock(&packageMutex);
defaultPtr = NULL;
for (pkgPtr = firstPackagePtr; pkgPtr != NULL; pkgPtr = pkgPtr->nextPtr) {
if (packageName == NULL) {
namesMatch = 0;
} else {
Tcl_DStringSetLength(&pkgName, 0);
Tcl_DStringAppend(&pkgName, packageName, -1);
Tcl_DStringSetLength(&tmp, 0);
Tcl_DStringAppend(&tmp, pkgPtr->packageName, -1);
Tcl_UtfToLower(Tcl_DStringValue(&pkgName));
Tcl_UtfToLower(Tcl_DStringValue(&tmp));
if (strcmp(Tcl_DStringValue(&tmp),
Tcl_DStringValue(&pkgName)) == 0) {
namesMatch = 1;
} else {
namesMatch = 0;
}
}
Tcl_DStringSetLength(&pkgName, 0);
filesMatch = (strcmp(pkgPtr->fileName, fullFileName) == 0);
if (filesMatch && (namesMatch || (packageName == NULL))) {
break;
}
if (namesMatch && (fullFileName[0] == 0)) {
defaultPtr = pkgPtr;
}
if (filesMatch && !namesMatch && (fullFileName[0] != 0)) {
Tcl_AppendResult(interp, "file \"", fullFileName,
"\" is already loaded for package \"",
pkgPtr->packageName, "\"", (char *) NULL);
code = TCL_ERROR;
Tcl_MutexUnlock(&packageMutex);
goto done;
}
}
Tcl_MutexUnlock(&packageMutex);
if (pkgPtr == NULL) {
pkgPtr = defaultPtr;
}
if (pkgPtr != NULL) {
ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
(Tcl_InterpDeleteProc **) NULL);
for (ipPtr = ipFirstPtr; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
if (ipPtr->pkgPtr == pkgPtr) {
code = TCL_OK;
goto done;
}
}
}
if (pkgPtr == NULL) {
if (fullFileName[0] == 0) {
Tcl_AppendResult(interp, "package \"", packageName,
"\" isn't loaded statically", (char *) NULL);
code = TCL_ERROR;
goto done;
}
if (packageName != NULL) {
Tcl_DStringAppend(&pkgName, packageName, -1);
} else {
int retc;
retc = TclGuessPackageName(fullFileName, &pkgName);
if (!retc) {
Tcl_Obj *splitPtr;
Tcl_Obj *pkgGuessPtr;
int pElements;
char *pkgGuess;
splitPtr = Tcl_FSSplitPath(objv[1], &pElements);
Tcl_ListObjIndex(NULL, splitPtr, pElements -1, &pkgGuessPtr);
pkgGuess = Tcl_GetString(pkgGuessPtr);
if ((pkgGuess[0] == 'l') && (pkgGuess[1] == 'i')
&& (pkgGuess[2] == 'b')) {
pkgGuess += 3;
}
for (p = pkgGuess; *p != 0; p += offset) {
offset = Tcl_UtfToUniChar(p, &ch);
if ((ch > 0x100)
|| !(isalpha(UCHAR(ch))
|| (UCHAR(ch) == '_'))) {
break;
}
}
if (p == pkgGuess) {
Tcl_DecrRefCount(splitPtr);
Tcl_AppendResult(interp,
"couldn't figure out package name for ",
fullFileName, (char *) NULL);
code = TCL_ERROR;
goto done;
}
Tcl_DStringAppend(&pkgName, pkgGuess, (p - pkgGuess));
Tcl_DecrRefCount(splitPtr);
}
}
Tcl_DStringSetLength(&pkgName,
Tcl_UtfToTitle(Tcl_DStringValue(&pkgName)));
Tcl_DStringAppend(&initName, Tcl_DStringValue(&pkgName), -1);
Tcl_DStringAppend(&initName, "_Init", 5);
Tcl_DStringAppend(&safeInitName, Tcl_DStringValue(&pkgName), -1);
Tcl_DStringAppend(&safeInitName, "_SafeInit", 9);
Tcl_MutexLock(&packageMutex);
code = Tcl_FSLoadFile(interp, objv[1], Tcl_DStringValue(&initName),
Tcl_DStringValue(&safeInitName), &initProc, &safeInitProc,
&loadHandle,&unLoadProcPtr);
Tcl_MutexUnlock(&packageMutex);
if (code != TCL_OK) {
goto done;
}
if (initProc == NULL) {
Tcl_AppendResult(interp, "couldn't find procedure ",
Tcl_DStringValue(&initName), (char *) NULL);
if (unLoadProcPtr != NULL) {
(*unLoadProcPtr)(loadHandle);
}
code = TCL_ERROR;
goto done;
}
pkgPtr = (LoadedPackage *) ckalloc(sizeof(LoadedPackage));
pkgPtr->fileName = (char *) ckalloc((unsigned)
(strlen(fullFileName) + 1));
strcpy(pkgPtr->fileName, fullFileName);
pkgPtr->packageName = (char *) ckalloc((unsigned)
(Tcl_DStringLength(&pkgName) + 1));
strcpy(pkgPtr->packageName, Tcl_DStringValue(&pkgName));
pkgPtr->loadHandle = loadHandle;
pkgPtr->unLoadProcPtr = unLoadProcPtr;
pkgPtr->initProc = initProc;
pkgPtr->safeInitProc = safeInitProc;
Tcl_MutexLock(&packageMutex);
pkgPtr->nextPtr = firstPackagePtr;
firstPackagePtr = pkgPtr;
Tcl_MutexUnlock(&packageMutex);
}
if (Tcl_IsSafe(target)) {
if (pkgPtr->safeInitProc != NULL) {
code = (*pkgPtr->safeInitProc)(target);
} else {
Tcl_AppendResult(interp,
"can't use package in a safe interpreter: ",
"no ", pkgPtr->packageName, "_SafeInit procedure",
(char *) NULL);
code = TCL_ERROR;
goto done;
}
} else {
code = (*pkgPtr->initProc)(target);
}
if (code == TCL_OK) {
ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
(Tcl_InterpDeleteProc **) NULL);
ipPtr = (InterpPackage *) ckalloc(sizeof(InterpPackage));
ipPtr->pkgPtr = pkgPtr;
ipPtr->nextPtr = ipFirstPtr;
Tcl_SetAssocData(target, "tclLoad", LoadCleanupProc,
(ClientData) ipPtr);
} else {
TclTransferResult(target, code, interp);
}
done:
Tcl_DStringFree(&pkgName);
Tcl_DStringFree(&initName);
Tcl_DStringFree(&safeInitName);
Tcl_DStringFree(&tmp);
return code;
}
void
Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
Tcl_Interp *interp;
CONST char *pkgName;
Tcl_PackageInitProc *initProc;
Tcl_PackageInitProc *safeInitProc;
{
LoadedPackage *pkgPtr;
InterpPackage *ipPtr, *ipFirstPtr;
Tcl_MutexLock(&packageMutex);
for (pkgPtr = firstPackagePtr; pkgPtr != NULL; pkgPtr = pkgPtr->nextPtr) {
if ((pkgPtr->initProc == initProc)
&& (pkgPtr->safeInitProc == safeInitProc)
&& (strcmp(pkgPtr->packageName, pkgName) == 0)) {
Tcl_MutexUnlock(&packageMutex);
return;
}
}
Tcl_MutexUnlock(&packageMutex);
pkgPtr = (LoadedPackage *) ckalloc(sizeof(LoadedPackage));
pkgPtr->fileName = (char *) ckalloc((unsigned) 1);
pkgPtr->fileName[0] = 0;
pkgPtr->packageName = (char *) ckalloc((unsigned)
(strlen(pkgName) + 1));
strcpy(pkgPtr->packageName, pkgName);
pkgPtr->loadHandle = NULL;
pkgPtr->initProc = initProc;
pkgPtr->safeInitProc = safeInitProc;
Tcl_MutexLock(&packageMutex);
pkgPtr->nextPtr = firstPackagePtr;
firstPackagePtr = pkgPtr;
Tcl_MutexUnlock(&packageMutex);
if (interp != NULL) {
ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(interp, "tclLoad",
(Tcl_InterpDeleteProc **) NULL);
ipPtr = (InterpPackage *) ckalloc(sizeof(InterpPackage));
ipPtr->pkgPtr = pkgPtr;
ipPtr->nextPtr = ipFirstPtr;
Tcl_SetAssocData(interp, "tclLoad", LoadCleanupProc,
(ClientData) ipPtr);
}
}
int
TclGetLoadedPackages(interp, targetName)
Tcl_Interp *interp;
char *targetName;
{
Tcl_Interp *target;
LoadedPackage *pkgPtr;
InterpPackage *ipPtr;
char *prefix;
if (targetName == NULL) {
prefix = "{";
Tcl_MutexLock(&packageMutex);
for (pkgPtr = firstPackagePtr; pkgPtr != NULL;
pkgPtr = pkgPtr->nextPtr) {
Tcl_AppendResult(interp, prefix, (char *) NULL);
Tcl_AppendElement(interp, pkgPtr->fileName);
Tcl_AppendElement(interp, pkgPtr->packageName);
Tcl_AppendResult(interp, "}", (char *) NULL);
prefix = " {";
}
Tcl_MutexUnlock(&packageMutex);
return TCL_OK;
}
target = Tcl_GetSlave(interp, targetName);
if (target == NULL) {
return TCL_ERROR;
}
ipPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
(Tcl_InterpDeleteProc **) NULL);
prefix = "{";
for ( ; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
pkgPtr = ipPtr->pkgPtr;
Tcl_AppendResult(interp, prefix, (char *) NULL);
Tcl_AppendElement(interp, pkgPtr->fileName);
Tcl_AppendElement(interp, pkgPtr->packageName);
Tcl_AppendResult(interp, "}", (char *) NULL);
prefix = " {";
}
return TCL_OK;
}
static void
LoadCleanupProc(clientData, interp)
ClientData clientData;
Tcl_Interp *interp;
{
InterpPackage *ipPtr, *nextPtr;
ipPtr = (InterpPackage *) clientData;
while (ipPtr != NULL) {
nextPtr = ipPtr->nextPtr;
ckfree((char *) ipPtr);
ipPtr = nextPtr;
}
}
void
TclFinalizeLoad()
{
LoadedPackage *pkgPtr;
while (firstPackagePtr != NULL) {
pkgPtr = firstPackagePtr;
firstPackagePtr = pkgPtr->nextPtr;
#if defined(TCL_UNLOAD_DLLS) || defined(__WIN32__)
if (pkgPtr->fileName[0] != '\0') {
Tcl_FSUnloadFileProc *unLoadProcPtr = pkgPtr->unLoadProcPtr;
if (unLoadProcPtr != NULL) {
(*unLoadProcPtr)(pkgPtr->loadHandle);
}
}
#endif
ckfree(pkgPtr->fileName);
ckfree(pkgPtr->packageName);
ckfree((char *) pkgPtr);
}
}