/* * tclCmdAH.c -- * * This file contains the top-level command routines for most of the Tcl * built-in commands whose names begin with the letters A to H. * * Copyright (c) 1987-1993 The Regents of the University of California. * Copyright (c) 1994-1997 Sun Microsystems, Inc. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #include "tclInt.h" #include /* * The state structure used by [foreach]. Note that the actual structure has * all its working arrays appended afterwards so they can be allocated and * freed in a single step. */ struct ForeachState { Tcl_Obj *bodyPtr; /* The script body of the command. */ int bodyIdx; /* The argument index of the body. */ int j, maxj; /* Number of loop iterations. */ int numLists; /* Count of value lists. */ int *index; /* Array of value list indices. */ int *varcList; /* # loop variables per list. */ Tcl_Obj ***varvList; /* Array of var name lists. */ Tcl_Obj **vCopyList; /* Copies of var name list arguments. */ int *argcList; /* Array of value list sizes. */ Tcl_Obj ***argvList; /* Array of value lists. */ Tcl_Obj **aCopyList; /* Copies of value list arguments. */ }; /* * Prototypes for local procedures defined in this file: */ static int CheckAccess(Tcl_Interp *interp, Tcl_Obj *pathPtr, int mode); static int EncodingDirsObjCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static inline int ForeachAssignments(Tcl_Interp *interp, struct ForeachState *statePtr); static inline void ForeachCleanup(Tcl_Interp *interp, struct ForeachState *statePtr); static int GetStatBuf(Tcl_Interp *interp, Tcl_Obj *pathPtr, Tcl_FSStatProc *statProc, Tcl_StatBuf *statPtr); static const char * GetTypeFromMode(int mode); static int StoreStatData(Tcl_Interp *interp, Tcl_Obj *varName, Tcl_StatBuf *statPtr); static Tcl_NRPostProc CatchObjCmdCallback; static Tcl_NRPostProc ExprCallback; static Tcl_NRPostProc ForSetupCallback; static Tcl_NRPostProc ForCondCallback; static Tcl_NRPostProc ForNextCallback; static Tcl_NRPostProc ForPostNextCallback; static Tcl_NRPostProc ForeachLoopStep; static Tcl_NRPostProc EvalCmdErrMsg; static Tcl_ObjCmdProc FileAttrAccessTimeCmd; static Tcl_ObjCmdProc FileAttrIsDirectoryCmd; static Tcl_ObjCmdProc FileAttrIsExecutableCmd; static Tcl_ObjCmdProc FileAttrIsExistingCmd; static Tcl_ObjCmdProc FileAttrIsFileCmd; static Tcl_ObjCmdProc FileAttrIsOwnedCmd; static Tcl_ObjCmdProc FileAttrIsReadableCmd; static Tcl_ObjCmdProc FileAttrIsWritableCmd; static Tcl_ObjCmdProc FileAttrLinkStatCmd; static Tcl_ObjCmdProc FileAttrModifyTimeCmd; static Tcl_ObjCmdProc FileAttrSizeCmd; static Tcl_ObjCmdProc FileAttrStatCmd; static Tcl_ObjCmdProc FileAttrTypeCmd; static Tcl_ObjCmdProc FilesystemSeparatorCmd; static Tcl_ObjCmdProc FilesystemVolumesCmd; static Tcl_ObjCmdProc PathDirNameCmd; static Tcl_ObjCmdProc PathExtensionCmd; static Tcl_ObjCmdProc PathFilesystemCmd; static Tcl_ObjCmdProc PathJoinCmd; static Tcl_ObjCmdProc PathNativeNameCmd; static Tcl_ObjCmdProc PathNormalizeCmd; static Tcl_ObjCmdProc PathRootNameCmd; static Tcl_ObjCmdProc PathSplitCmd; static Tcl_ObjCmdProc PathTailCmd; static Tcl_ObjCmdProc PathTypeCmd; /* *---------------------------------------------------------------------- * * Tcl_BreakObjCmd -- * * This procedure is invoked to process the "break" Tcl command. See the * user documentation for details on what it does. * * With the bytecode compiler, this procedure is only called when a * command name is computed at runtime, and is "break" or the name to * which "break" was renamed: e.g., "set z break; $z" * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_BreakObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { if (objc != 1) { Tcl_WrongNumArgs(interp, 1, objv, NULL); return TCL_ERROR; } return TCL_BREAK; } /* *---------------------------------------------------------------------- * * Tcl_CaseObjCmd -- * * This procedure is invoked to process the "case" Tcl command. See the * user documentation for details on what it does. THIS COMMAND IS * OBSOLETE AND DEPRECATED. SLATED FOR REMOVAL IN TCL 9.0. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_CaseObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { register int i; int body, result, caseObjc; const char *stringPtr, *arg; Tcl_Obj *const *caseObjv; Tcl_Obj *armPtr; if (objc < 3) { Tcl_WrongNumArgs(interp, 1, objv, "string ?in? ?pattern body ...? ?default body?"); return TCL_ERROR; } stringPtr = TclGetString(objv[1]); body = -1; arg = TclGetString(objv[2]); if (strcmp(arg, "in") == 0) { i = 3; } else { i = 2; } caseObjc = objc - i; caseObjv = objv + i; /* * If all of the pattern/command pairs are lumped into a single argument, * split them out again. */ if (caseObjc == 1) { Tcl_Obj **newObjv; TclListObjGetElements(interp, caseObjv[0], &caseObjc, &newObjv); caseObjv = newObjv; } for (i = 0; i < caseObjc; i += 2) { int patObjc, j; const char **patObjv; const char *pat; unsigned char *p; if (i == caseObjc-1) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "extra case pattern with no body", NULL); return TCL_ERROR; } /* * Check for special case of single pattern (no list) with no * backslash sequences. */ pat = TclGetString(caseObjv[i]); for (p = (unsigned char *) pat; *p != '\0'; p++) { if (isspace(*p) || (*p == '\\')) { /* INTL: ISO space, UCHAR */ break; } } if (*p == '\0') { if ((*pat == 'd') && (strcmp(pat, "default") == 0)) { body = i + 1; } if (Tcl_StringMatch(stringPtr, pat)) { body = i + 1; goto match; } continue; } /* * Break up pattern lists, then check each of the patterns in the * list. */ result = Tcl_SplitList(interp, pat, &patObjc, &patObjv); if (result != TCL_OK) { return result; } for (j = 0; j < patObjc; j++) { if (Tcl_StringMatch(stringPtr, patObjv[j])) { body = i + 1; break; } } ckfree(patObjv); if (j < patObjc) { break; } } match: if (body != -1) { armPtr = caseObjv[body - 1]; result = Tcl_EvalObjEx(interp, caseObjv[body], 0); if (result == TCL_ERROR) { Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (\"%.50s\" arm line %d)", TclGetString(armPtr), Tcl_GetErrorLine(interp))); } return result; } /* * Nothing matched: return nothing. */ return TCL_OK; } /* *---------------------------------------------------------------------- * * Tcl_CatchObjCmd -- * * This object-based procedure is invoked to process the "catch" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_CatchObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { return Tcl_NRCallObjProc(interp, TclNRCatchObjCmd, dummy, objc, objv); } int TclNRCatchObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Obj *varNamePtr = NULL; Tcl_Obj *optionVarNamePtr = NULL; Interp *iPtr = (Interp *) interp; if ((objc < 2) || (objc > 4)) { Tcl_WrongNumArgs(interp, 1, objv, "script ?resultVarName? ?optionVarName?"); return TCL_ERROR; } if (objc >= 3) { varNamePtr = objv[2]; } if (objc == 4) { optionVarNamePtr = objv[3]; } TclNRAddCallback(interp, CatchObjCmdCallback, INT2PTR(objc), varNamePtr, optionVarNamePtr, NULL); /* * TIP #280. Make invoking context available to caught script. */ return TclNREvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1); } static int CatchObjCmdCallback( ClientData data[], Tcl_Interp *interp, int result) { Interp *iPtr = (Interp *) interp; int objc = PTR2INT(data[0]); Tcl_Obj *varNamePtr = data[1]; Tcl_Obj *optionVarNamePtr = data[2]; int rewind = iPtr->execEnvPtr->rewind; /* * We disable catch in interpreters where the limit has been exceeded. */ if (rewind || Tcl_LimitExceeded(interp)) { Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (\"catch\" body line %d)", Tcl_GetErrorLine(interp))); return TCL_ERROR; } if (objc >= 3) { if (NULL == Tcl_ObjSetVar2(interp, varNamePtr, NULL, Tcl_GetObjResult(interp), 0)) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "couldn't save command result in variable", NULL); return TCL_ERROR; } } if (objc == 4) { Tcl_Obj *options = Tcl_GetReturnOptions(interp, result); if (NULL == Tcl_ObjSetVar2(interp, optionVarNamePtr, NULL, options, 0)) { Tcl_DecrRefCount(options); Tcl_ResetResult(interp); Tcl_AppendResult(interp, "couldn't save return options in variable", NULL); return TCL_ERROR; } } Tcl_ResetResult(interp); Tcl_SetObjResult(interp, Tcl_NewIntObj(result)); return TCL_OK; } /* *---------------------------------------------------------------------- * * Tcl_CdObjCmd -- * * This procedure is invoked to process the "cd" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_CdObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Obj *dir; int result; if (objc > 2) { Tcl_WrongNumArgs(interp, 1, objv, "?dirName?"); return TCL_ERROR; } if (objc == 2) { dir = objv[1]; } else { TclNewLiteralStringObj(dir, "~"); Tcl_IncrRefCount(dir); } if (Tcl_FSConvertToPathType(interp, dir) != TCL_OK) { result = TCL_ERROR; } else { result = Tcl_FSChdir(dir); if (result != TCL_OK) { Tcl_AppendResult(interp, "couldn't change working directory to \"", TclGetString(dir), "\": ", Tcl_PosixError(interp), NULL); result = TCL_ERROR; } } if (objc != 2) { Tcl_DecrRefCount(dir); } return result; } /* *---------------------------------------------------------------------- * * Tcl_ConcatObjCmd -- * * This object-based procedure is invoked to process the "concat" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ConcatObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { if (objc >= 2) { Tcl_SetObjResult(interp, Tcl_ConcatObj(objc-1, objv+1)); } return TCL_OK; } /* *---------------------------------------------------------------------- * * Tcl_ContinueObjCmd -- * * This procedure is invoked to process the "continue" Tcl command. See * the user documentation for details on what it does. * * With the bytecode compiler, this procedure is only called when a * command name is computed at runtime, and is "continue" or the name to * which "continue" was renamed: e.g., "set z continue; $z" * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ContinueObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { if (objc != 1) { Tcl_WrongNumArgs(interp, 1, objv, NULL); return TCL_ERROR; } return TCL_CONTINUE; } /* *---------------------------------------------------------------------- * * Tcl_EncodingObjCmd -- * * This command manipulates encodings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_EncodingObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int index; static const char *const optionStrings[] = { "convertfrom", "convertto", "dirs", "names", "system", NULL }; enum options { ENC_CONVERTFROM, ENC_CONVERTTO, ENC_DIRS, ENC_NAMES, ENC_SYSTEM }; if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?"); return TCL_ERROR; } if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0, &index) != TCL_OK) { return TCL_ERROR; } switch ((enum options) index) { case ENC_CONVERTTO: case ENC_CONVERTFROM: { Tcl_Obj *data; Tcl_DString ds; Tcl_Encoding encoding; int length; const char *stringPtr; if (objc == 3) { encoding = Tcl_GetEncoding(interp, NULL); data = objv[2]; } else if (objc == 4) { if (Tcl_GetEncodingFromObj(interp, objv[2], &encoding) != TCL_OK) { return TCL_ERROR; } data = objv[3]; } else { Tcl_WrongNumArgs(interp, 2, objv, "?encoding? data"); return TCL_ERROR; } if ((enum options) index == ENC_CONVERTFROM) { /* * Treat the string as binary data. */ stringPtr = (char *) Tcl_GetByteArrayFromObj(data, &length); Tcl_ExternalToUtfDString(encoding, stringPtr, length, &ds); /* * Note that we cannot use Tcl_DStringResult here because it will * truncate the string at the first null byte. */ Tcl_SetObjResult(interp, Tcl_NewStringObj( Tcl_DStringValue(&ds), Tcl_DStringLength(&ds))); Tcl_DStringFree(&ds); } else { /* * Store the result as binary data. */ stringPtr = TclGetStringFromObj(data, &length); Tcl_UtfToExternalDString(encoding, stringPtr, length, &ds); Tcl_SetObjResult(interp, Tcl_NewByteArrayObj( (unsigned char *) Tcl_DStringValue(&ds), Tcl_DStringLength(&ds))); Tcl_DStringFree(&ds); } Tcl_FreeEncoding(encoding); break; } case ENC_DIRS: return EncodingDirsObjCmd(dummy, interp, objc-1, objv+1); case ENC_NAMES: if (objc > 2) { Tcl_WrongNumArgs(interp, 2, objv, NULL); return TCL_ERROR; } Tcl_GetEncodingNames(interp); break; case ENC_SYSTEM: if (objc > 3) { Tcl_WrongNumArgs(interp, 2, objv, "?encoding?"); return TCL_ERROR; } if (objc == 2) { Tcl_SetObjResult(interp, Tcl_NewStringObj( Tcl_GetEncodingName(NULL), -1)); } else { return Tcl_SetSystemEncoding(interp, TclGetString(objv[2])); } break; } return TCL_OK; } /* *---------------------------------------------------------------------- * * EncodingDirsObjCmd -- * * This command manipulates the encoding search path. * * Results: * A standard Tcl result. * * Side effects: * Can set the encoding search path. * *---------------------------------------------------------------------- */ int EncodingDirsObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { if (objc > 2) { Tcl_WrongNumArgs(interp, 1, objv, "?dirList?"); return TCL_ERROR; } if (objc == 1) { Tcl_SetObjResult(interp, Tcl_GetEncodingSearchPath()); return TCL_OK; } if (Tcl_SetEncodingSearchPath(objv[1]) == TCL_ERROR) { Tcl_AppendResult(interp, "expected directory list but got \"", TclGetString(objv[1]), "\"", NULL); return TCL_ERROR; } Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } /* *---------------------------------------------------------------------- * * Tcl_ErrorObjCmd -- * * This procedure is invoked to process the "error" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ErrorObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Obj *options, *optName; if ((objc < 2) || (objc > 4)) { Tcl_WrongNumArgs(interp, 1, objv, "message ?errorInfo? ?errorCode?"); return TCL_ERROR; } TclNewLiteralStringObj(options, "-code error -level 0"); if (objc >= 3) { /* Process the optional info argument */ TclNewLiteralStringObj(optName, "-errorinfo"); Tcl_ListObjAppendElement(NULL, options, optName); Tcl_ListObjAppendElement(NULL, options, objv[2]); } if (objc >= 4) { /* Process the optional code argument */ TclNewLiteralStringObj(optName, "-errorcode"); Tcl_ListObjAppendElement(NULL, options, optName); Tcl_ListObjAppendElement(NULL, options, objv[3]); } Tcl_SetObjResult(interp, objv[1]); return Tcl_SetReturnOptions(interp, options); } /* *---------------------------------------------------------------------- * * Tcl_EvalObjCmd -- * * This object-based procedure is invoked to process the "eval" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ static int EvalCmdErrMsg( ClientData data[], Tcl_Interp *interp, int result) { if (result == TCL_ERROR) { Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (\"eval\" body line %d)", Tcl_GetErrorLine(interp))); } return result; } int Tcl_EvalObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { register Tcl_Obj *objPtr; Interp *iPtr = (Interp *) interp; CmdFrame *invoker = NULL; int word = 0; if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?"); return TCL_ERROR; } if (objc == 2) { /* * TIP #280. Make argument location available to eval'd script. */ invoker = iPtr->cmdFramePtr; word = 1; objPtr = objv[1]; TclArgumentGet(interp, objPtr, &invoker, &word); } else { /* * More than one argument: concatenate them together with spaces * between, then evaluate the result. Tcl_EvalObjEx will delete the * object when it decrements its refcount after eval'ing it. * * TIP #280. Make invoking context available to eval'd script, done * with the default values. */ objPtr = Tcl_ConcatObj(objc-1, objv+1); } TclNRAddCallback(interp, EvalCmdErrMsg, NULL, NULL, NULL, NULL); return TclNREvalObjEx(interp, objPtr, 0, invoker, word); } /* *---------------------------------------------------------------------- * * Tcl_ExitObjCmd -- * * This procedure is invoked to process the "exit" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ExitObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int value; if ((objc != 1) && (objc != 2)) { Tcl_WrongNumArgs(interp, 1, objv, "?returnCode?"); return TCL_ERROR; } if (objc == 1) { value = 0; } else if (Tcl_GetIntFromObj(interp, objv[1], &value) != TCL_OK) { return TCL_ERROR; } Tcl_Exit(value); /*NOTREACHED*/ return TCL_OK; /* Better not ever reach this! */ } /* *---------------------------------------------------------------------- * * Tcl_ExprObjCmd -- * * This object-based procedure is invoked to process the "expr" Tcl * command. See the user documentation for details on what it does. * * With the bytecode compiler, this procedure is called in two * circumstances: 1) to execute expr commands that are too complicated or * too unsafe to try compiling directly into an inline sequence of * instructions, and 2) to execute commands where the command name is * computed at runtime and is "expr" or the name to which "expr" was * renamed (e.g., "set z expr; $z 2+3") * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ExprObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { return Tcl_NRCallObjProc(interp, TclNRExprObjCmd, dummy, objc, objv); } int TclNRExprObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Obj *resultPtr, *objPtr; if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?"); return TCL_ERROR; } TclNewObj(resultPtr); Tcl_IncrRefCount(resultPtr); if (objc == 2) { objPtr = objv[1]; TclNRAddCallback(interp, ExprCallback, resultPtr, NULL, NULL, NULL); } else { objPtr = Tcl_ConcatObj(objc-1, objv+1); TclNRAddCallback(interp, ExprCallback, resultPtr, objPtr, NULL, NULL); } return Tcl_NRExprObj(interp, objPtr, resultPtr); } static int ExprCallback( ClientData data[], Tcl_Interp *interp, int result) { Tcl_Obj *resultPtr = data[0]; Tcl_Obj *objPtr = data[1]; if (objPtr != NULL) { Tcl_DecrRefCount(objPtr); } if (result == TCL_OK) { Tcl_SetObjResult(interp, resultPtr); } Tcl_DecrRefCount(resultPtr); return result; } /* *---------------------------------------------------------------------- * * TclInitFileCmd -- * * This function builds the "file" Tcl command ensemble. See the user * documentation for details on what that ensemble does. * * PLEASE NOTE THAT THIS FAILS WITH FILENAMES AND PATHS WITH EMBEDDED * NULLS. With the object-based Tcl_FS APIs, the above NOTE may no longer * be true. In any case this assertion should be tested. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ Tcl_Command TclInitFileCmd( Tcl_Interp *interp) { /* * Note that most subcommands are unsafe because either they manipulate * the native filesystem or because they reveal information about the * native filesystem. */ static const EnsembleImplMap initMap[] = { {"atime", FileAttrAccessTimeCmd, NULL, NULL, NULL, 0}, {"attributes", TclFileAttrsCmd, NULL, NULL, NULL, 0}, {"channels", TclChannelNamesCmd, NULL, NULL, NULL, 0}, {"copy", TclFileCopyCmd, NULL, NULL, NULL, 0}, {"delete", TclFileDeleteCmd, NULL, NULL, NULL, 0}, {"dirname", PathDirNameCmd, NULL, NULL, NULL, 0}, {"executable", FileAttrIsExecutableCmd, NULL, NULL, NULL, 0}, {"exists", FileAttrIsExistingCmd, NULL, NULL, NULL, 0}, {"extension", PathExtensionCmd, NULL, NULL, NULL, 0}, {"isdirectory", FileAttrIsDirectoryCmd, NULL, NULL, NULL, 0}, {"isfile", FileAttrIsFileCmd, NULL, NULL, NULL, 0}, {"join", PathJoinCmd, NULL, NULL, NULL, 0}, {"link", TclFileLinkCmd, NULL, NULL, NULL, 0}, {"lstat", FileAttrLinkStatCmd, NULL, NULL, NULL, 0}, {"mtime", FileAttrModifyTimeCmd, NULL, NULL, NULL, 0}, {"mkdir", TclFileMakeDirsCmd, NULL, NULL, NULL, 0}, {"nativename", PathNativeNameCmd, NULL, NULL, NULL, 0}, {"normalize", PathNormalizeCmd, NULL, NULL, NULL, 0}, {"owned", FileAttrIsOwnedCmd, NULL, NULL, NULL, 0}, {"pathtype", PathTypeCmd, NULL, NULL, NULL, 0}, {"readable", FileAttrIsReadableCmd, NULL, NULL, NULL, 0}, {"readlink", TclFileReadLinkCmd, NULL, NULL, NULL, 0}, {"rename", TclFileRenameCmd, NULL, NULL, NULL, 0}, {"rootname", PathRootNameCmd, NULL, NULL, NULL, 0}, {"separator", FilesystemSeparatorCmd, NULL, NULL, NULL, 0}, {"size", FileAttrSizeCmd, NULL, NULL, NULL, 0}, {"split", PathSplitCmd, NULL, NULL, NULL, 0}, {"stat", FileAttrStatCmd, NULL, NULL, NULL, 0}, {"system", PathFilesystemCmd, NULL, NULL, NULL, 0}, {"tail", PathTailCmd, NULL, NULL, NULL, 0}, {"tempfile", TclFileTemporaryCmd, NULL, NULL, NULL, 0}, {"type", FileAttrTypeCmd, NULL, NULL, NULL, 0}, {"volumes", FilesystemVolumesCmd, NULL, NULL, NULL, 0}, {"writable", FileAttrIsWritableCmd, NULL, NULL, NULL, 0}, {NULL, NULL, NULL, NULL, NULL, 0} }; return TclMakeEnsemble(interp, "file", initMap); } /* *---------------------------------------------------------------------- * * TclMakeFileCommandSafe -- * * This function hides the unsafe subcommands of the "file" Tcl command * ensemble. It must only be called from TclHideUnsafeCommands. * * Results: * A standard Tcl result. * * Side effects: * Adds commands to the table of hidden commands. * *---------------------------------------------------------------------- */ int TclMakeFileCommandSafe( Tcl_Interp *interp) { static const struct { const char *cmdName; int unsafe; } unsafeInfo[] = { {"atime", 1}, {"attributes", 1}, {"channels", 0}, {"copy", 1}, {"delete", 1}, {"dirname", 1}, {"executable", 1}, {"exists", 1}, {"extension", 1}, {"isdirectory", 1}, {"isfile", 1}, {"join", 0}, {"link", 1}, {"lstat", 1}, {"mtime", 1}, {"mkdir", 1}, {"nativename", 1}, {"normalize", 1}, {"owned", 1}, {"pathtype", 0}, {"readable", 1}, {"readlink", 1}, {"rename", 1}, {"rootname", 1}, {"separator", 0}, {"size", 1}, {"split", 0}, {"stat", 1}, {"system", 0}, {"tail", 1}, {"tempfile", 1}, {"type", 1}, {"volumes", 1}, {"writable", 1}, {NULL, 0} }; int i; Tcl_DString oldBuf, newBuf; Tcl_DStringInit(&oldBuf); Tcl_DStringAppend(&oldBuf, "::tcl::file::", -1); Tcl_DStringInit(&newBuf); Tcl_DStringAppend(&newBuf, "tcl:file:", -1); for (i=0 ; unsafeInfo[i].cmdName != NULL ; i++) { if (unsafeInfo[i].unsafe) { const char *oldName, *newName; Tcl_DStringSetLength(&oldBuf, 13); oldName = Tcl_DStringAppend(&oldBuf, unsafeInfo[i].cmdName, -1); Tcl_DStringSetLength(&newBuf, 9); newName = Tcl_DStringAppend(&newBuf, unsafeInfo[i].cmdName, -1); if (TclRenameCommand(interp, oldName, "___tmp") != TCL_OK || Tcl_HideCommand(interp, "___tmp", newName) != TCL_OK) { Tcl_Panic("problem making 'file %s' safe: %s", unsafeInfo[i].cmdName, Tcl_GetString(Tcl_GetObjResult(interp))); } } } Tcl_DStringFree(&oldBuf); Tcl_DStringFree(&newBuf); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrAccessTimeCmd -- * * This function is invoked to process the "file atime" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * May update the access time on the file, if requested by the user. * *---------------------------------------------------------------------- */ static int FileAttrAccessTimeCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; struct utimbuf tval; if (objc < 2 || objc > 3) { Tcl_WrongNumArgs(interp, 1, objv, "name ?time?"); return TCL_ERROR; } if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) { return TCL_ERROR; } if (objc == 3) { /* * Need separate variable for reading longs from an object on 64-bit * platforms. [Bug 698146] */ long newTime; if (TclGetLongFromObj(interp, objv[2], &newTime) != TCL_OK) { return TCL_ERROR; } tval.actime = newTime; tval.modtime = buf.st_mtime; if (Tcl_FSUtime(objv[1], &tval) != 0) { Tcl_AppendResult(interp, "could not set access time for file \"", TclGetString(objv[1]), "\": ", Tcl_PosixError(interp), NULL); return TCL_ERROR; } /* * Do another stat to ensure that the we return the new recognized * atime - hopefully the same as the one we sent in. However, fs's * like FAT don't even know what atime is. */ if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) { return TCL_ERROR; } } Tcl_SetObjResult(interp, Tcl_NewLongObj((long) buf.st_atime)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrModifyTimeCmd -- * * This function is invoked to process the "file mtime" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * May update the modification time on the file, if requested by the * user. * *---------------------------------------------------------------------- */ static int FileAttrModifyTimeCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; struct utimbuf tval; if (objc < 2 || objc > 3) { Tcl_WrongNumArgs(interp, 1, objv, "name ?time?"); return TCL_ERROR; } if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) { return TCL_ERROR; } if (objc == 3) { /* * Need separate variable for reading longs from an object on 64-bit * platforms. [Bug 698146] */ long newTime; if (TclGetLongFromObj(interp, objv[2], &newTime) != TCL_OK) { return TCL_ERROR; } tval.actime = buf.st_atime; tval.modtime = newTime; if (Tcl_FSUtime(objv[1], &tval) != 0) { Tcl_AppendResult(interp, "could not set modification time for " "file \"", TclGetString(objv[1]), "\": ", Tcl_PosixError(interp), NULL); return TCL_ERROR; } /* * Do another stat to ensure that the we return the new recognized * mtime - hopefully the same as the one we sent in. */ if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) { return TCL_ERROR; } } Tcl_SetObjResult(interp, Tcl_NewLongObj((long) buf.st_mtime)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrLinkStatCmd -- * * This function is invoked to process the "file lstat" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * Writes to an array named by the user. * *---------------------------------------------------------------------- */ static int FileAttrLinkStatCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "name varName"); return TCL_ERROR; } if (GetStatBuf(interp, objv[1], Tcl_FSLstat, &buf) != TCL_OK) { return TCL_ERROR; } return StoreStatData(interp, objv[2], &buf); } /* *---------------------------------------------------------------------- * * FileAttrStatCmd -- * * This function is invoked to process the "file stat" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * Writes to an array named by the user. * *---------------------------------------------------------------------- */ static int FileAttrStatCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "name varName"); return TCL_ERROR; } if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) { return TCL_ERROR; } return StoreStatData(interp, objv[2], &buf); } /* *---------------------------------------------------------------------- * * FileAttrTypeCmd -- * * This function is invoked to process the "file type" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrTypeCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } if (GetStatBuf(interp, objv[1], Tcl_FSLstat, &buf) != TCL_OK) { return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewStringObj( GetTypeFromMode((unsigned short) buf.st_mode), -1)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrSizeCmd -- * * This function is invoked to process the "file size" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrSizeCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) { return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewWideIntObj((Tcl_WideInt) buf.st_size)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrIsDirectoryCmd -- * * This function is invoked to process the "file isdirectory" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsDirectoryCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; int value = 0; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } if (GetStatBuf(NULL, objv[1], Tcl_FSStat, &buf) == TCL_OK) { value = S_ISDIR(buf.st_mode); } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrIsExecutableCmd -- * * This function is invoked to process the "file executable" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsExecutableCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } return CheckAccess(interp, objv[1], X_OK); } /* *---------------------------------------------------------------------- * * FileAttrIsExistingCmd -- * * This function is invoked to process the "file exists" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsExistingCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } return CheckAccess(interp, objv[1], F_OK); } /* *---------------------------------------------------------------------- * * FileAttrIsFileCmd -- * * This function is invoked to process the "file isfile" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsFileCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; int value = 0; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } if (GetStatBuf(NULL, objv[1], Tcl_FSStat, &buf) == TCL_OK) { value = S_ISREG(buf.st_mode); } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrIsOwnedCmd -- * * This function is invoked to process the "file owned" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsOwnedCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_StatBuf buf; int value = 0; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } if (GetStatBuf(NULL, objv[1], Tcl_FSStat, &buf) == TCL_OK) { /* * For Windows, there are no user ids associated with a file, so we * always return 1. * * TODO: use GetSecurityInfo to get the real owner of the file and * test for equivalence to the current user. */ #ifdef __WIN32__ value = 1; #else value = (geteuid() == buf.st_uid); #endif } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value)); return TCL_OK; } /* *---------------------------------------------------------------------- * * FileAttrIsReadableCmd -- * * This function is invoked to process the "file readable" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsReadableCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } return CheckAccess(interp, objv[1], R_OK); } /* *---------------------------------------------------------------------- * * FileAttrIsWritableCmd -- * * This function is invoked to process the "file writable" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FileAttrIsWritableCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } return CheckAccess(interp, objv[1], W_OK); } /* *---------------------------------------------------------------------- * * PathDirNameCmd -- * * This function is invoked to process the "file dirname" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathDirNameCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *dirPtr; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } dirPtr = TclPathPart(interp, objv[1], TCL_PATH_DIRNAME); if (dirPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, dirPtr); Tcl_DecrRefCount(dirPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathExtensionCmd -- * * This function is invoked to process the "file extension" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathExtensionCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *dirPtr; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } dirPtr = TclPathPart(interp, objv[1], TCL_PATH_EXTENSION); if (dirPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, dirPtr); Tcl_DecrRefCount(dirPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathRootNameCmd -- * * This function is invoked to process the "file root" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathRootNameCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *dirPtr; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } dirPtr = TclPathPart(interp, objv[1], TCL_PATH_ROOT); if (dirPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, dirPtr); Tcl_DecrRefCount(dirPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathTailCmd -- * * This function is invoked to process the "file tail" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathTailCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *dirPtr; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } dirPtr = TclPathPart(interp, objv[1], TCL_PATH_TAIL); if (dirPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, dirPtr); Tcl_DecrRefCount(dirPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathFilesystemCmd -- * * This function is invoked to process the "file system" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathFilesystemCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *fsInfo; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } fsInfo = Tcl_FSFileSystemInfo(objv[1]); if (fsInfo == NULL) { Tcl_SetResult(interp, "unrecognised path", TCL_STATIC); return TCL_ERROR; } Tcl_SetObjResult(interp, fsInfo); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathJoinCmd -- * * This function is invoked to process the "file join" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathJoinCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "name ?name ...?"); return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_FSJoinToPath(NULL, objc - 1, objv + 1)); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathNativeNameCmd -- * * This function is invoked to process the "file nativename" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathNativeNameCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { const char *fileName; Tcl_DString ds; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } fileName = Tcl_TranslateFileName(interp, TclGetString(objv[1]), &ds); if (fileName == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewStringObj(fileName, Tcl_DStringLength(&ds))); Tcl_DStringFree(&ds); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathNormalizeCmd -- * * This function is invoked to process the "file normalize" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathNormalizeCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *fileName; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } fileName = Tcl_FSGetNormalizedPath(interp, objv[1]); if (fileName == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, fileName); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathSplitCmd -- * * This function is invoked to process the "file split" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathSplitCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *res; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } res = Tcl_FSSplitPath(objv[1], NULL); if (res == NULL) { Tcl_AppendResult(interp, "could not read \"", TclGetString(objv[1]), "\": no such file or directory", NULL); return TCL_ERROR; } Tcl_SetObjResult(interp, res); return TCL_OK; } /* *---------------------------------------------------------------------- * * PathTypeCmd -- * * This function is invoked to process the "file pathtype" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int PathTypeCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { Tcl_Obj *typeName; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } switch (Tcl_FSGetPathType(objv[1])) { case TCL_PATH_ABSOLUTE: TclNewLiteralStringObj(typeName, "absolute"); break; case TCL_PATH_RELATIVE: TclNewLiteralStringObj(typeName, "relative"); break; case TCL_PATH_VOLUME_RELATIVE: TclNewLiteralStringObj(typeName, "volumerelative"); break; default: /* Should be unreachable */ return TCL_OK; } Tcl_SetObjResult(interp, typeName); return TCL_OK; } /* *---------------------------------------------------------------------- * * FilesystemSeparatorCmd -- * * This function is invoked to process the "file separator" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FilesystemSeparatorCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc < 1 || objc > 2) { Tcl_WrongNumArgs(interp, 1, objv, "?name?"); return TCL_ERROR; } if (objc == 1) { const char *separator = NULL; /* lint */ switch (tclPlatform) { case TCL_PLATFORM_UNIX: separator = "/"; break; case TCL_PLATFORM_WINDOWS: separator = "\\"; break; } Tcl_SetObjResult(interp, Tcl_NewStringObj(separator, 1)); } else { Tcl_Obj *separatorObj = Tcl_FSPathSeparator(objv[1]); if (separatorObj == NULL) { Tcl_SetResult(interp, "unrecognised path", TCL_STATIC); return TCL_ERROR; } Tcl_SetObjResult(interp, separatorObj); } return TCL_OK; } /* *---------------------------------------------------------------------- * * FilesystemVolumesCmd -- * * This function is invoked to process the "file volumes" Tcl command. * See the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int FilesystemVolumesCmd( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { if (objc != 1) { Tcl_WrongNumArgs(interp, 1, objv, NULL); return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_FSListVolumes()); return TCL_OK; } /* *--------------------------------------------------------------------------- * * CheckAccess -- * * Utility procedure used by Tcl_FileObjCmd() to query file attributes * available through the access() system call. * * Results: * Always returns TCL_OK. Sets interp's result to boolean true or false * depending on whether the file has the specified attribute. * * Side effects: * None. * *--------------------------------------------------------------------------- */ static int CheckAccess( Tcl_Interp *interp, /* Interp for status return. Must not be * NULL. */ Tcl_Obj *pathPtr, /* Name of file to check. */ int mode) /* Attribute to check; passed as argument to * access(). */ { int value; if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) { value = 0; } else { value = (Tcl_FSAccess(pathPtr, mode) == 0); } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value)); return TCL_OK; } /* *--------------------------------------------------------------------------- * * GetStatBuf -- * * Utility procedure used by Tcl_FileObjCmd() to query file attributes * available through the stat() or lstat() system call. * * Results: * The return value is TCL_OK if the specified file exists and can be * stat'ed, TCL_ERROR otherwise. If TCL_ERROR is returned, an error * message is left in interp's result. If TCL_OK is returned, *statPtr is * filled with information about the specified file. * * Side effects: * None. * *--------------------------------------------------------------------------- */ static int GetStatBuf( Tcl_Interp *interp, /* Interp for error return. May be NULL. */ Tcl_Obj *pathPtr, /* Path name to examine. */ Tcl_FSStatProc *statProc, /* Either stat() or lstat() depending on * desired behavior. */ Tcl_StatBuf *statPtr) /* Filled with info about file obtained by * calling (*statProc)(). */ { int status; if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) { return TCL_ERROR; } status = statProc(pathPtr, statPtr); if (status < 0) { if (interp != NULL) { Tcl_AppendResult(interp, "could not read \"", TclGetString(pathPtr), "\": ", Tcl_PosixError(interp), NULL); } return TCL_ERROR; } return TCL_OK; } /* *---------------------------------------------------------------------- * * StoreStatData -- * * This is a utility procedure that breaks out the fields of a "stat" * structure and stores them in textual form into the elements of an * associative array. * * Results: * Returns a standard Tcl return value. If an error occurs then a message * is left in interp's result. * * Side effects: * Elements of the associative array given by "varName" are modified. * *---------------------------------------------------------------------- */ static int StoreStatData( Tcl_Interp *interp, /* Interpreter for error reports. */ Tcl_Obj *varName, /* Name of associative array variable in which * to store stat results. */ Tcl_StatBuf *statPtr) /* Pointer to buffer containing stat data to * store in varName. */ { Tcl_Obj *field, *value; register unsigned short mode; /* * Assume Tcl_ObjSetVar2() does not keep a copy of the field name! * * Might be a better idea to call Tcl_SetVar2Ex() instead, except we want * to have an object (i.e. possibly cached) array variable name but a * string element name, so no API exists. Messy. */ #define STORE_ARY(fieldName, object) \ TclNewLiteralStringObj(field, fieldName); \ Tcl_IncrRefCount(field); \ value = (object); \ if (Tcl_ObjSetVar2(interp,varName,field,value,TCL_LEAVE_ERR_MSG)==NULL) { \ TclDecrRefCount(field); \ return TCL_ERROR; \ } \ TclDecrRefCount(field); /* * Watch out porters; the inode is meant to be an *unsigned* value, so the * cast might fail when there isn't a real arithmetic 'long long' type... */ STORE_ARY("dev", Tcl_NewLongObj((long)statPtr->st_dev)); STORE_ARY("ino", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_ino)); STORE_ARY("nlink", Tcl_NewLongObj((long)statPtr->st_nlink)); STORE_ARY("uid", Tcl_NewLongObj((long)statPtr->st_uid)); STORE_ARY("gid", Tcl_NewLongObj((long)statPtr->st_gid)); STORE_ARY("size", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_size)); #ifdef HAVE_STRUCT_STAT_ST_BLOCKS STORE_ARY("blocks", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_blocks)); #endif #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE STORE_ARY("blksize", Tcl_NewLongObj((long)statPtr->st_blksize)); #endif STORE_ARY("atime", Tcl_NewLongObj((long)statPtr->st_atime)); STORE_ARY("mtime", Tcl_NewLongObj((long)statPtr->st_mtime)); STORE_ARY("ctime", Tcl_NewLongObj((long)statPtr->st_ctime)); mode = (unsigned short) statPtr->st_mode; STORE_ARY("mode", Tcl_NewIntObj(mode)); STORE_ARY("type", Tcl_NewStringObj(GetTypeFromMode(mode), -1)); #undef STORE_ARY return TCL_OK; } /* *---------------------------------------------------------------------- * * GetTypeFromMode -- * * Given a mode word, returns a string identifying the type of a file. * * Results: * A static text string giving the file type from mode. * * Side effects: * None. * *---------------------------------------------------------------------- */ static const char * GetTypeFromMode( int mode) { if (S_ISREG(mode)) { return "file"; } else if (S_ISDIR(mode)) { return "directory"; } else if (S_ISCHR(mode)) { return "characterSpecial"; } else if (S_ISBLK(mode)) { return "blockSpecial"; } else if (S_ISFIFO(mode)) { return "fifo"; #ifdef S_ISLNK } else if (S_ISLNK(mode)) { return "link"; #endif #ifdef S_ISSOCK } else if (S_ISSOCK(mode)) { return "socket"; #endif } return "unknown"; } /* *---------------------------------------------------------------------- * * Tcl_ForObjCmd -- * * This procedure is invoked to process the "for" Tcl command. See the * user documentation for details on what it does. * * With the bytecode compiler, this procedure is only called when a * command name is computed at runtime, and is "for" or the name to which * "for" was renamed: e.g., * "set z for; $z {set i 0} {$i<100} {incr i} {puts $i}" * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * * Notes: * This command is split into a lot of pieces so that it can avoid doing * reentrant TEBC calls. This makes things rather hard to follow, but * here's the plan: * * NR: ---------------_\ * Direct: Tcl_ForObjCmd -> TclNRForObjCmd * | * ForSetupCallback * | * [while] ------------> TclNRForIterCallback <---------. * | | * ForCondCallback | * | | * ForNextCallback ------------| * | | * ForPostNextCallback | * |____________________| * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ForObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { return Tcl_NRCallObjProc(interp, TclNRForObjCmd, dummy, objc, objv); } int TclNRForObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Interp *iPtr = (Interp *) interp; ForIterData *iterPtr; if (objc != 5) { Tcl_WrongNumArgs(interp, 1, objv, "start test next command"); return TCL_ERROR; } TclCkSmallAlloc(sizeof(ForIterData), iterPtr); iterPtr->cond = objv[2]; iterPtr->body = objv[4]; iterPtr->next = objv[3]; iterPtr->msg = "\n (\"for\" body line %d)"; iterPtr->word = 4; TclNRAddCallback(interp, ForSetupCallback, iterPtr, NULL, NULL, NULL); /* * TIP #280. Make invoking context available to initial script. */ return TclNREvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1); } static int ForSetupCallback( ClientData data[], Tcl_Interp *interp, int result) { ForIterData *iterPtr = data[0]; if (result != TCL_OK) { if (result == TCL_ERROR) { Tcl_AddErrorInfo(interp, "\n (\"for\" initial command)"); } TclSmallFree(iterPtr); return result; } TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL); return TCL_OK; } int TclNRForIterCallback( ClientData data[], Tcl_Interp *interp, int result) { ForIterData *iterPtr = data[0]; Tcl_Obj *boolObj; switch (result) { case TCL_OK: case TCL_CONTINUE: /* * We need to reset the result before evaluating the expression. * Otherwise, any error message will be appended to the result of the * last evaluation. */ Tcl_ResetResult(interp); TclNewObj(boolObj); TclNRAddCallback(interp, ForCondCallback, iterPtr, boolObj, NULL, NULL); return Tcl_NRExprObj(interp, iterPtr->cond, boolObj); case TCL_BREAK: result = TCL_OK; Tcl_ResetResult(interp); break; case TCL_ERROR: Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(iterPtr->msg, Tcl_GetErrorLine(interp))); } TclSmallFree(iterPtr); return result; } static int ForCondCallback( ClientData data[], Tcl_Interp *interp, int result) { Interp *iPtr = (Interp *) interp; ForIterData *iterPtr = data[0]; Tcl_Obj *boolObj = data[1]; int value; if (result != TCL_OK) { Tcl_DecrRefCount(boolObj); TclSmallFree(iterPtr); return result; } else if (Tcl_GetBooleanFromObj(interp, boolObj, &value) != TCL_OK) { Tcl_DecrRefCount(boolObj); TclSmallFree(iterPtr); return TCL_ERROR; } Tcl_DecrRefCount(boolObj); if (value) { /* TIP #280. */ if (iterPtr->next) { TclNRAddCallback(interp, ForNextCallback, iterPtr, NULL, NULL, NULL); } else { TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL); } return TclNREvalObjEx(interp, iterPtr->body, 0, iPtr->cmdFramePtr, iterPtr->word); } TclSmallFree(iterPtr); return result; } static int ForNextCallback( ClientData data[], Tcl_Interp *interp, int result) { Interp *iPtr = (Interp *) interp; ForIterData *iterPtr = data[0]; Tcl_Obj *next = iterPtr->next; if ((result == TCL_OK) || (result == TCL_CONTINUE)) { TclNRAddCallback(interp, ForPostNextCallback, iterPtr, NULL, NULL, NULL); /* * TIP #280. Make invoking context available to next script. */ return TclNREvalObjEx(interp, next, 0, iPtr->cmdFramePtr, 3); } TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL); return result; } static int ForPostNextCallback( ClientData data[], Tcl_Interp *interp, int result) { ForIterData *iterPtr = data[0]; if ((result != TCL_BREAK) && (result != TCL_OK)) { if (result == TCL_ERROR) { Tcl_AddErrorInfo(interp, "\n (\"for\" loop-end command)"); TclSmallFree(iterPtr); } return result; } TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL); return result; } /* *---------------------------------------------------------------------- * * Tcl_ForeachObjCmd, TclNRForeachCmd -- * * This object-based procedure is invoked to process the "foreach" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_ForeachObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { return Tcl_NRCallObjProc(interp, TclNRForeachCmd, dummy, objc, objv); } int TclNRForeachCmd( ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) { int numLists = (objc-2) / 2; register struct ForeachState *statePtr; int i, j, result; if (objc < 4 || (objc%2 != 0)) { Tcl_WrongNumArgs(interp, 1, objv, "varList list ?varList list ...? command"); return TCL_ERROR; } /* * Manage numList parallel value lists. * statePtr->argvList[i] is a value list counted by statePtr->argcList[i]; * statePtr->varvList[i] is the list of variables associated with the * value list; * statePtr->varcList[i] is the number of variables associated with the * value list; * statePtr->index[i] is the current pointer into the value list * statePtr->argvList[i]. * * The setting up of all of these pointers is moderately messy, but allows * the rest of this code to be simple and for us to use a single memory * allocation for better performance. */ statePtr = ckalloc( sizeof(struct ForeachState) + 3 * numLists * sizeof(int) + 2 * numLists * (sizeof(Tcl_Obj **) + sizeof(Tcl_Obj *))); memset(statePtr, 0, sizeof(struct ForeachState) + 3 * numLists * sizeof(int) + 2 * numLists * (sizeof(Tcl_Obj **) + sizeof(Tcl_Obj *))); statePtr->varvList = (Tcl_Obj ***) (statePtr + 1); statePtr->argvList = statePtr->varvList + numLists; statePtr->vCopyList = (Tcl_Obj **) (statePtr->argvList + numLists); statePtr->aCopyList = statePtr->vCopyList + numLists; statePtr->index = (int *) (statePtr->aCopyList + numLists); statePtr->varcList = statePtr->index + numLists; statePtr->argcList = statePtr->varcList + numLists; statePtr->numLists = numLists; statePtr->bodyPtr = objv[objc - 1]; statePtr->bodyIdx = objc - 1; /* * Break up the value lists and variable lists into elements. */ for (i=0 ; ivCopyList[i] = TclListObjCopy(interp, objv[1+i*2]); if (statePtr->vCopyList[i] == NULL) { result = TCL_ERROR; goto done; } TclListObjGetElements(NULL, statePtr->vCopyList[i], &statePtr->varcList[i], &statePtr->varvList[i]); if (statePtr->varcList[i] < 1) { Tcl_AppendResult(interp, "foreach varlist is empty", NULL); result = TCL_ERROR; goto done; } statePtr->aCopyList[i] = TclListObjCopy(interp, objv[2+i*2]); if (statePtr->aCopyList[i] == NULL) { result = TCL_ERROR; goto done; } TclListObjGetElements(NULL, statePtr->aCopyList[i], &statePtr->argcList[i], &statePtr->argvList[i]); j = statePtr->argcList[i] / statePtr->varcList[i]; if ((statePtr->argcList[i] % statePtr->varcList[i]) != 0) { j++; } if (j > statePtr->maxj) { statePtr->maxj = j; } } /* * If there is any work to do, assign the variables and set things going * non-recursively. */ if (statePtr->maxj > 0) { result = ForeachAssignments(interp, statePtr); if (result == TCL_ERROR) { goto done; } TclNRAddCallback(interp, ForeachLoopStep, statePtr, NULL, NULL, NULL); return TclNREvalObjEx(interp, objv[objc-1], 0, ((Interp *) interp)->cmdFramePtr, objc-1); } /* * This cleanup stage is only used when an error occurs during setup or if * there is no work to do. */ result = TCL_OK; done: ForeachCleanup(interp, statePtr); return result; } /* * Post-body processing handler. */ static int ForeachLoopStep( ClientData data[], Tcl_Interp *interp, int result) { register struct ForeachState *statePtr = data[0]; /* * Process the result code from this run of the [foreach] body. Note that * this switch uses fallthroughs in several places. Maintainer aware! */ switch (result) { case TCL_CONTINUE: result = TCL_OK; case TCL_OK: break; case TCL_BREAK: result = TCL_OK; goto done; case TCL_ERROR: Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (\"foreach\" body line %d)", Tcl_GetErrorLine(interp))); default: goto done; } /* * Test if there is work still to be done. If so, do the next round of * variable assignments, reschedule ourselves and run the body again. */ if (statePtr->maxj > ++statePtr->j) { result = ForeachAssignments(interp, statePtr); if (result == TCL_ERROR) { goto done; } TclNRAddCallback(interp, ForeachLoopStep, statePtr, NULL, NULL, NULL); return TclNREvalObjEx(interp, statePtr->bodyPtr, 0, ((Interp *) interp)->cmdFramePtr, statePtr->bodyIdx); } /* * We're done. Tidy up our work space and finish off. */ Tcl_ResetResult(interp); done: ForeachCleanup(interp, statePtr); return result; } /* * Factored out code to do the assignments in [foreach]. */ static inline int ForeachAssignments( Tcl_Interp *interp, struct ForeachState *statePtr) { int i, v, k; Tcl_Obj *valuePtr, *varValuePtr; for (i=0 ; inumLists ; i++) { for (v=0 ; vvarcList[i] ; v++) { k = statePtr->index[i]++; if (k < statePtr->argcList[i]) { valuePtr = statePtr->argvList[i][k]; } else { TclNewObj(valuePtr); /* Empty string */ } varValuePtr = Tcl_ObjSetVar2(interp, statePtr->varvList[i][v], NULL, valuePtr, TCL_LEAVE_ERR_MSG); if (varValuePtr == NULL) { Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (setting foreach loop variable \"%s\")", TclGetString(statePtr->varvList[i][v]))); return TCL_ERROR; } } } return TCL_OK; } /* * Factored out code for cleaning up the state of the foreach. */ static inline void ForeachCleanup( Tcl_Interp *interp, struct ForeachState *statePtr) { int i; for (i=0 ; inumLists ; i++) { if (statePtr->vCopyList[i]) { TclDecrRefCount(statePtr->vCopyList[i]); } if (statePtr->aCopyList[i]) { TclDecrRefCount(statePtr->aCopyList[i]); } } ckfree(statePtr); } /* *---------------------------------------------------------------------- * * Tcl_FormatObjCmd -- * * This procedure is invoked to process the "format" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ /* ARGSUSED */ int Tcl_FormatObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Obj *resultPtr; /* Where result is stored finally. */ if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "formatString ?arg ...?"); return TCL_ERROR; } resultPtr = Tcl_Format(interp, TclGetString(objv[1]), objc-2, objv+2); if (resultPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, resultPtr); return TCL_OK; } /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */