1999 lines
50 KiB
C
1999 lines
50 KiB
C
/*
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* tclUnixAZ.c --
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*
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* This file contains the top-level command procedures for
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* commands in the Tcl core that require UNIX facilities
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* such as files and process execution. Much of the code
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* in this file is based on earlier versions contributed
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* by Karl Lehenbauer, Mark Diekhans and Peter da Silva.
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*
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* Copyright (c) 1991-1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef lint
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static char rcsid[] = "$Header: /user6/ouster/tcl/RCS/tclUnixAZ.c,v 1.70 93/09/24 16:47:39 ouster Exp $ SPRITE (Berkeley)";
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#endif /* not lint */
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#include "tclInt.h"
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#include "tclUnix.h"
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/*
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* The variable below caches the name of the current working directory
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* in order to avoid repeated calls to getcwd. The string is malloc-ed.
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* NULL means the cache needs to be refreshed.
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*/
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static char *currentDir = NULL;
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/*
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* If the system doesn't define the EWOULDBLOCK errno, just #define it
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* to a bogus value that will never occur.
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*/
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#ifndef EWOULDBLOCK
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#define EWOULDBLOCK -1901
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#endif
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/*
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* Prototypes for local procedures defined in this file:
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*/
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static int CleanupChildren _ANSI_ARGS_((Tcl_Interp *interp,
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int numPids, int *pidPtr, int errorId,
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int keepNewline));
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static char * GetFileType _ANSI_ARGS_((int mode));
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static char * GetOpenMode _ANSI_ARGS_((Tcl_Interp *interp,
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char *string, int *modePtr));
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static int StoreStatData _ANSI_ARGS_((Tcl_Interp *interp,
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char *varName, struct stat *statPtr));
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_CdCmd --
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*
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* This procedure is invoked to process the "cd" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_CdCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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char *dirName;
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Tcl_DString buffer;
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int result;
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if (argc > 2) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" dirName\"", (char *) NULL);
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return TCL_ERROR;
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}
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if (argc == 2) {
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dirName = argv[1];
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} else {
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dirName = "~";
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}
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dirName = Tcl_TildeSubst(interp, dirName, &buffer);
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if (dirName == NULL) {
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return TCL_ERROR;
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}
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if (currentDir != NULL) {
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ckfree(currentDir);
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currentDir = NULL;
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}
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result = TCL_OK;
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if (chdir(dirName) != 0) {
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Tcl_AppendResult(interp, "couldn't change working directory to \"",
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dirName, "\": ", Tcl_PosixError(interp), (char *) NULL);
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result = TCL_ERROR;
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}
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Tcl_DStringFree(&buffer);
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return result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_CloseCmd --
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*
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* This procedure is invoked to process the "close" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_CloseCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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OpenFile *oFilePtr;
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int result = TCL_OK;
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FILE *f;
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if (argc != 2) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" fileId\"", (char *) NULL);
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return TCL_ERROR;
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}
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if (Tcl_GetOpenFile(interp, argv[1], 0, 0, &f) != TCL_OK) {
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return TCL_ERROR;
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}
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oFilePtr = tclOpenFiles[fileno(f)];
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tclOpenFiles[fileno(f)] = NULL;
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/*
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* First close the file (in the case of a process pipeline, there may
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* be two files, one for the pipe at each end of the pipeline).
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*/
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if (oFilePtr->f2 != NULL) {
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clearerr(oFilePtr->f2);
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if (fclose(oFilePtr->f2) == EOF) {
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Tcl_AppendResult(interp, "error closing \"", argv[1],
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"\": ", Tcl_PosixError(interp), "\n", (char *) NULL);
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result = TCL_ERROR;
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}
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}
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clearerr(oFilePtr->f);
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if (fclose(oFilePtr->f) == EOF) {
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Tcl_AppendResult(interp, "error closing \"", argv[1],
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"\": ", Tcl_PosixError(interp), "\n", (char *) NULL);
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result = TCL_ERROR;
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}
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/*
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* If the file was a connection to a pipeline, clean up everything
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* associated with the child processes.
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*/
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if (oFilePtr->numPids > 0) {
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if (CleanupChildren(interp, oFilePtr->numPids, oFilePtr->pidPtr,
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oFilePtr->errorId, 0) != TCL_OK) {
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result = TCL_ERROR;
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}
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}
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ckfree((char *) oFilePtr);
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return result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_EofCmd --
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*
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* This procedure is invoked to process the "eof" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_EofCmd(notUsed, interp, argc, argv)
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ClientData notUsed; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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FILE *f;
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if (argc != 2) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" fileId\"", (char *) NULL);
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return TCL_ERROR;
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}
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if (Tcl_GetOpenFile(interp, argv[1], 0, 0, &f) != TCL_OK) {
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return TCL_ERROR;
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}
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if (feof(f)) {
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interp->result = "1";
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} else {
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interp->result = "0";
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}
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return TCL_OK;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ExecCmd --
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*
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* This procedure is invoked to process the "exec" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ExecCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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int outputId; /* File id for output pipe. -1
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* means command overrode. */
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int errorId; /* File id for temporary file
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* containing error output. */
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int *pidPtr;
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int numPids, result, keepNewline;
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int firstWord;
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/*
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* Check for a leading "-keepnewline" argument.
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*/
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keepNewline = 0;
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for (firstWord = 1; (firstWord < argc) && (argv[firstWord][0] == '-');
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firstWord++) {
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if (strcmp(argv[firstWord], "-keepnewline") == 0) {
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keepNewline = 1;
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} else if (strcmp(argv[firstWord], "--") == 0) {
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firstWord++;
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break;
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} else {
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Tcl_AppendResult(interp, "bad switch \"", argv[firstWord],
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"\": must be -keepnewline or --", (char *) NULL);
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return TCL_ERROR;
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}
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}
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if (argc <= firstWord) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" ?switches? arg ?arg ...?\"", (char *) NULL);
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return TCL_ERROR;
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}
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/*
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* See if the command is to be run in background; if so, create
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* the command, detach it, and return a list of pids.
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*/
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if ((argv[argc-1][0] == '&') && (argv[argc-1][1] == 0)) {
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int i;
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char id[50];
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argc--;
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argv[argc] = NULL;
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numPids = Tcl_CreatePipeline(interp, argc-firstWord, argv+firstWord,
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&pidPtr, (int *) NULL, (int *) NULL, (int *) NULL);
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if (numPids < 0) {
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return TCL_ERROR;
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}
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Tcl_DetachPids(numPids, pidPtr);
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for (i = 0; i < numPids; i++) {
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sprintf(id, "%d", pidPtr[i]);
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Tcl_AppendElement(interp, id);
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}
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ckfree((char *) pidPtr);
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return TCL_OK;
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}
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/*
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* Create the command's pipeline.
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*/
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numPids = Tcl_CreatePipeline(interp, argc-firstWord, argv+firstWord,
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&pidPtr, (int *) NULL, &outputId, &errorId);
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if (numPids < 0) {
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return TCL_ERROR;
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}
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/*
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* Read the child's output (if any) and put it into the result.
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*/
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result = TCL_OK;
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if (outputId != -1) {
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while (1) {
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# define BUFFER_SIZE 1000
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char buffer[BUFFER_SIZE+1];
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int count;
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count = read(outputId, buffer, (size_t) BUFFER_SIZE);
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if (count == 0) {
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break;
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}
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if (count < 0) {
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Tcl_ResetResult(interp);
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Tcl_AppendResult(interp,
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"error reading from output pipe: ",
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Tcl_PosixError(interp), (char *) NULL);
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result = TCL_ERROR;
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break;
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}
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buffer[count] = 0;
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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}
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close(outputId);
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}
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if (CleanupChildren(interp, numPids, pidPtr, errorId, keepNewline)
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!= TCL_OK) {
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result = TCL_ERROR;
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}
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return result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ExitCmd --
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*
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* This procedure is invoked to process the "exit" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ExitCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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int value;
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if ((argc != 1) && (argc != 2)) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" ?returnCode?\"", (char *) NULL);
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return TCL_ERROR;
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}
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if (argc == 1) {
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exit(0);
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}
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if (Tcl_GetInt(interp, argv[1], &value) != TCL_OK) {
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return TCL_ERROR;
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}
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exit(value);
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/*NOTREACHED*/
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return TCL_OK; /* Better not ever reach this! */
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_FileCmd --
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*
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* This procedure is invoked to process the "file" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_FileCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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char *p;
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int length, statOp, result;
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int mode = 0; /* Initialized only to prevent
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* compiler warning message. */
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struct stat statBuf;
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char *fileName, c;
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Tcl_DString buffer;
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if (argc < 3) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" option name ?arg ...?\"", (char *) NULL);
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return TCL_ERROR;
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}
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c = argv[1][0];
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length = strlen(argv[1]);
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result = TCL_OK;
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/*
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* First handle operations on the file name.
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*/
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fileName = Tcl_TildeSubst(interp, argv[2], &buffer);
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if (fileName == NULL) {
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result = TCL_ERROR;
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goto done;
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}
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if ((c == 'd') && (strncmp(argv[1], "dirname", length) == 0)) {
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if (argc != 3) {
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argv[1] = "dirname";
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not3Args:
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" ", argv[1], " name\"", (char *) NULL);
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result = TCL_ERROR;
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goto done;
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}
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p = strrchr(fileName, '/');
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if (p == NULL) {
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interp->result = ".";
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} else if (p == fileName) {
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interp->result = "/";
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} else {
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*p = 0;
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Tcl_SetResult(interp, fileName, TCL_VOLATILE);
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*p = '/';
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}
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goto done;
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} else if ((c == 'r') && (strncmp(argv[1], "rootname", length) == 0)
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&& (length >= 2)) {
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char *lastSlash;
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if (argc != 3) {
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argv[1] = "rootname";
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goto not3Args;
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}
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p = strrchr(fileName, '.');
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lastSlash = strrchr(fileName, '/');
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if ((p == NULL) || ((lastSlash != NULL) && (lastSlash > p))) {
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Tcl_SetResult(interp, fileName, TCL_VOLATILE);
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} else {
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*p = 0;
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Tcl_SetResult(interp, fileName, TCL_VOLATILE);
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*p = '.';
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}
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goto done;
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} else if ((c == 'e') && (strncmp(argv[1], "extension", length) == 0)
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&& (length >= 3)) {
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char *lastSlash;
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if (argc != 3) {
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argv[1] = "extension";
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goto not3Args;
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}
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p = strrchr(fileName, '.');
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lastSlash = strrchr(fileName, '/');
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if ((p != NULL) && ((lastSlash == NULL) || (lastSlash < p))) {
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Tcl_SetResult(interp, p, TCL_VOLATILE);
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}
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goto done;
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} else if ((c == 't') && (strncmp(argv[1], "tail", length) == 0)
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&& (length >= 2)) {
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if (argc != 3) {
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argv[1] = "tail";
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goto not3Args;
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}
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p = strrchr(fileName, '/');
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if (p != NULL) {
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Tcl_SetResult(interp, p+1, TCL_VOLATILE);
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} else {
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Tcl_SetResult(interp, fileName, TCL_VOLATILE);
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}
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goto done;
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}
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/*
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* Next, handle operations that can be satisfied with the "access"
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* kernel call.
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*/
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if (fileName == NULL) {
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result = TCL_ERROR;
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goto done;
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}
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if ((c == 'r') && (strncmp(argv[1], "readable", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (argc != 3) {
|
||
argv[1] = "readable";
|
||
goto not3Args;
|
||
}
|
||
mode = R_OK;
|
||
checkAccess:
|
||
if (access(fileName, mode) == -1) {
|
||
interp->result = "0";
|
||
} else {
|
||
interp->result = "1";
|
||
}
|
||
goto done;
|
||
} else if ((c == 'w') && (strncmp(argv[1], "writable", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "writable";
|
||
goto not3Args;
|
||
}
|
||
mode = W_OK;
|
||
goto checkAccess;
|
||
} else if ((c == 'e') && (strncmp(argv[1], "executable", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "executable";
|
||
goto not3Args;
|
||
}
|
||
mode = X_OK;
|
||
goto checkAccess;
|
||
} else if ((c == 'e') && (strncmp(argv[1], "exists", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "exists";
|
||
goto not3Args;
|
||
}
|
||
mode = F_OK;
|
||
goto checkAccess;
|
||
}
|
||
|
||
/*
|
||
* Lastly, check stuff that requires the file to be stat-ed.
|
||
*/
|
||
|
||
if ((c == 'a') && (strncmp(argv[1], "atime", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "atime";
|
||
goto not3Args;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
sprintf(interp->result, "%ld", statBuf.st_atime);
|
||
goto done;
|
||
} else if ((c == 'i') && (strncmp(argv[1], "isdirectory", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "isdirectory";
|
||
goto not3Args;
|
||
}
|
||
statOp = 2;
|
||
} else if ((c == 'i') && (strncmp(argv[1], "isfile", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "isfile";
|
||
goto not3Args;
|
||
}
|
||
statOp = 1;
|
||
} else if ((c == 'l') && (strncmp(argv[1], "lstat", length) == 0)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" lstat name varName\"", (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
|
||
if (lstat(fileName, &statBuf) == -1) {
|
||
Tcl_AppendResult(interp, "couldn't lstat \"", argv[2],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
result = StoreStatData(interp, argv[3], &statBuf);
|
||
goto done;
|
||
} else if ((c == 'm') && (strncmp(argv[1], "mtime", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "mtime";
|
||
goto not3Args;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
sprintf(interp->result, "%ld", statBuf.st_mtime);
|
||
goto done;
|
||
} else if ((c == 'o') && (strncmp(argv[1], "owned", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "owned";
|
||
goto not3Args;
|
||
}
|
||
statOp = 0;
|
||
} else if ((c == 'r') && (strncmp(argv[1], "readlink", length) == 0)
|
||
&& (length >= 5)) {
|
||
char linkValue[MAXPATHLEN+1];
|
||
int linkLength;
|
||
|
||
if (argc != 3) {
|
||
argv[1] = "readlink";
|
||
goto not3Args;
|
||
}
|
||
|
||
/*
|
||
* If S_IFLNK isn't defined it means that the machine doesn't
|
||
* support symbolic links, so the file can't possibly be a
|
||
* symbolic link. Generate an EINVAL error, which is what
|
||
* happens on machines that do support symbolic links when
|
||
* you invoke readlink on a file that isn't a symbolic link.
|
||
*/
|
||
|
||
#ifndef S_IFLNK
|
||
linkLength = -1;
|
||
errno = EINVAL;
|
||
#else
|
||
linkLength = readlink(fileName, linkValue, sizeof(linkValue) - 1);
|
||
#endif /* S_IFLNK */
|
||
if (linkLength == -1) {
|
||
Tcl_AppendResult(interp, "couldn't readlink \"", argv[2],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
linkValue[linkLength] = 0;
|
||
Tcl_SetResult(interp, linkValue, TCL_VOLATILE);
|
||
goto done;
|
||
} else if ((c == 's') && (strncmp(argv[1], "size", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 3) {
|
||
argv[1] = "size";
|
||
goto not3Args;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
sprintf(interp->result, "%ld", statBuf.st_size);
|
||
goto done;
|
||
} else if ((c == 's') && (strncmp(argv[1], "stat", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" stat name varName\"", (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
badStat:
|
||
Tcl_AppendResult(interp, "couldn't stat \"", argv[2],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
result = StoreStatData(interp, argv[3], &statBuf);
|
||
goto done;
|
||
} else if ((c == 't') && (strncmp(argv[1], "type", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 3) {
|
||
argv[1] = "type";
|
||
goto not3Args;
|
||
}
|
||
if (lstat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
interp->result = GetFileType((int) statBuf.st_mode);
|
||
goto done;
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad option \"", argv[1],
|
||
"\": should be atime, dirname, executable, exists, ",
|
||
"extension, isdirectory, isfile, lstat, mtime, owned, ",
|
||
"readable, readlink, ",
|
||
"root, size, stat, tail, type, ",
|
||
"or writable",
|
||
(char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
interp->result = "0";
|
||
goto done;
|
||
}
|
||
switch (statOp) {
|
||
case 0:
|
||
mode = (geteuid() == statBuf.st_uid);
|
||
break;
|
||
case 1:
|
||
mode = S_ISREG(statBuf.st_mode);
|
||
break;
|
||
case 2:
|
||
mode = S_ISDIR(statBuf.st_mode);
|
||
break;
|
||
}
|
||
if (mode) {
|
||
interp->result = "1";
|
||
} else {
|
||
interp->result = "0";
|
||
}
|
||
|
||
done:
|
||
Tcl_DStringFree(&buffer);
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* 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->result.
|
||
*
|
||
* Side effects:
|
||
* Elements of the associative array given by "varName" are modified.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
StoreStatData(interp, varName, statPtr)
|
||
Tcl_Interp *interp; /* Interpreter for error reports. */
|
||
char *varName; /* Name of associative array variable
|
||
* in which to store stat results. */
|
||
struct stat *statPtr; /* Pointer to buffer containing
|
||
* stat data to store in varName. */
|
||
{
|
||
char string[30];
|
||
|
||
sprintf(string, "%d", statPtr->st_dev);
|
||
if (Tcl_SetVar2(interp, varName, "dev", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%d", statPtr->st_ino);
|
||
if (Tcl_SetVar2(interp, varName, "ino", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%d", statPtr->st_mode);
|
||
if (Tcl_SetVar2(interp, varName, "mode", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%d", statPtr->st_nlink);
|
||
if (Tcl_SetVar2(interp, varName, "nlink", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%d", statPtr->st_uid);
|
||
if (Tcl_SetVar2(interp, varName, "uid", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%d", statPtr->st_gid);
|
||
if (Tcl_SetVar2(interp, varName, "gid", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%ld", statPtr->st_size);
|
||
if (Tcl_SetVar2(interp, varName, "size", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%ld", statPtr->st_atime);
|
||
if (Tcl_SetVar2(interp, varName, "atime", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%ld", statPtr->st_mtime);
|
||
if (Tcl_SetVar2(interp, varName, "mtime", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(string, "%ld", statPtr->st_ctime);
|
||
if (Tcl_SetVar2(interp, varName, "ctime", string, TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (Tcl_SetVar2(interp, varName, "type",
|
||
GetFileType((int) statPtr->st_mode), TCL_LEAVE_ERR_MSG) == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* GetFileType --
|
||
*
|
||
* 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 char *
|
||
GetFileType(mode)
|
||
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";
|
||
} else if (S_ISLNK(mode)) {
|
||
return "link";
|
||
} else if (S_ISSOCK(mode)) {
|
||
return "socket";
|
||
}
|
||
return "unknown";
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_FlushCmd --
|
||
*
|
||
* This procedure is invoked to process the "flush" 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_FlushCmd(notUsed, interp, argc, argv)
|
||
ClientData notUsed; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
FILE *f;
|
||
|
||
if (argc != 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" fileId\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (Tcl_GetOpenFile(interp, argv[1], 1, 1, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
clearerr(f);
|
||
if (fflush(f) == EOF) {
|
||
Tcl_AppendResult(interp, "error flushing \"", argv[1],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_GetsCmd --
|
||
*
|
||
* This procedure is invoked to process the "gets" 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_GetsCmd(notUsed, interp, argc, argv)
|
||
ClientData notUsed; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
# define BUF_SIZE 200
|
||
char buffer[BUF_SIZE+1];
|
||
int totalCount, done, flags;
|
||
FILE *f;
|
||
|
||
if ((argc != 2) && (argc != 3)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" fileId ?varName?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (Tcl_GetOpenFile(interp, argv[1], 0, 1, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* We can't predict how large a line will be, so read it in
|
||
* pieces, appending to the current result or to a variable.
|
||
*/
|
||
|
||
totalCount = 0;
|
||
done = 0;
|
||
flags = 0;
|
||
clearerr(f);
|
||
while (!done) {
|
||
register int c, count;
|
||
register char *p;
|
||
|
||
for (p = buffer, count = 0; count < BUF_SIZE-1; count++, p++) {
|
||
c = getc(f);
|
||
if (c == EOF) {
|
||
if (ferror(f)) {
|
||
/*
|
||
* If the file is in non-blocking mode, return any
|
||
* bytes that were read before a block would occur.
|
||
*/
|
||
|
||
if ((errno == EWOULDBLOCK)
|
||
&& ((count > 0 || totalCount > 0))) {
|
||
done = 1;
|
||
break;
|
||
}
|
||
Tcl_ResetResult(interp);
|
||
Tcl_AppendResult(interp, "error reading \"", argv[1],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
return TCL_ERROR;
|
||
} else if (feof(f)) {
|
||
if ((totalCount == 0) && (count == 0)) {
|
||
totalCount = -1;
|
||
}
|
||
done = 1;
|
||
break;
|
||
}
|
||
}
|
||
if (c == '\n') {
|
||
done = 1;
|
||
break;
|
||
}
|
||
*p = c;
|
||
}
|
||
*p = 0;
|
||
if (argc == 2) {
|
||
Tcl_AppendResult(interp, buffer, (char *) NULL);
|
||
} else {
|
||
if (Tcl_SetVar(interp, argv[2], buffer, flags|TCL_LEAVE_ERR_MSG)
|
||
== NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
flags = TCL_APPEND_VALUE;
|
||
}
|
||
totalCount += count;
|
||
}
|
||
|
||
if (argc == 3) {
|
||
sprintf(interp->result, "%d", totalCount);
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_OpenCmd --
|
||
*
|
||
* This procedure is invoked to process the "open" 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_OpenCmd(notUsed, interp, argc, argv)
|
||
ClientData notUsed; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int pipeline, fd, mode, prot, readWrite, permissions;
|
||
char *access;
|
||
FILE *f, *f2;
|
||
|
||
if ((argc < 2) || (argc > 4)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" filename ?access? ?permissions?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
prot = 0666;
|
||
if (argc == 2) {
|
||
mode = O_RDONLY;
|
||
access = "r";
|
||
} else {
|
||
access = GetOpenMode(interp, argv[2], &mode);
|
||
if (access == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (argc == 4) {
|
||
if (Tcl_GetInt(interp, argv[3], &prot) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
}
|
||
|
||
f = f2 = NULL;
|
||
readWrite = mode & (O_RDWR|O_RDONLY|O_WRONLY);
|
||
if (readWrite == O_RDONLY) {
|
||
permissions = TCL_FILE_READABLE;
|
||
} else if (readWrite == O_WRONLY) {
|
||
permissions = TCL_FILE_WRITABLE;
|
||
} else {
|
||
permissions = TCL_FILE_READABLE|TCL_FILE_WRITABLE;
|
||
}
|
||
|
||
pipeline = 0;
|
||
if (argv[1][0] == '|') {
|
||
pipeline = 1;
|
||
}
|
||
|
||
/*
|
||
* Open the file or create a process pipeline.
|
||
*/
|
||
|
||
if (!pipeline) {
|
||
char *fileName;
|
||
Tcl_DString buffer;
|
||
|
||
fileName = Tcl_TildeSubst(interp, argv[1], &buffer);
|
||
if (fileName == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
fd = open(fileName, mode, prot);
|
||
Tcl_DStringFree(&buffer);
|
||
if (fd < 0) {
|
||
Tcl_AppendResult(interp, "couldn't open \"", argv[1],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
f = fdopen(fd, access);
|
||
if (f == NULL) {
|
||
close(fd);
|
||
return TCL_ERROR;
|
||
}
|
||
Tcl_EnterFile(interp, f, permissions);
|
||
} else {
|
||
int *inPipePtr, *outPipePtr;
|
||
int cmdArgc, inPipe, outPipe, numPids, *pidPtr, errorId;
|
||
char **cmdArgv;
|
||
OpenFile *oFilePtr;
|
||
|
||
if (Tcl_SplitList(interp, argv[1]+1, &cmdArgc, &cmdArgv) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
inPipePtr = (permissions & TCL_FILE_WRITABLE) ? &inPipe : NULL;
|
||
outPipePtr = (permissions & TCL_FILE_READABLE) ? &outPipe : NULL;
|
||
inPipe = outPipe = errorId = -1;
|
||
numPids = Tcl_CreatePipeline(interp, cmdArgc, cmdArgv,
|
||
&pidPtr, inPipePtr, outPipePtr, &errorId);
|
||
ckfree((char *) cmdArgv);
|
||
if (numPids < 0) {
|
||
pipelineError:
|
||
if (f != NULL) {
|
||
fclose(f);
|
||
}
|
||
if (f2 != NULL) {
|
||
fclose(f2);
|
||
}
|
||
if (numPids > 0) {
|
||
Tcl_DetachPids(numPids, pidPtr);
|
||
ckfree((char *) pidPtr);
|
||
}
|
||
if (errorId != -1) {
|
||
close(errorId);
|
||
}
|
||
return TCL_ERROR;
|
||
}
|
||
if (permissions & TCL_FILE_READABLE) {
|
||
if (outPipe == -1) {
|
||
if (inPipe != -1) {
|
||
close(inPipe);
|
||
}
|
||
Tcl_AppendResult(interp, "can't read output from command:",
|
||
" standard output was redirected", (char *) NULL);
|
||
goto pipelineError;
|
||
}
|
||
f = fdopen(outPipe, "r");
|
||
}
|
||
if (permissions & TCL_FILE_WRITABLE) {
|
||
if (inPipe == -1) {
|
||
Tcl_AppendResult(interp, "can't write input to command:",
|
||
" standard input was redirected", (char *) NULL);
|
||
goto pipelineError;
|
||
}
|
||
if (f != NULL) {
|
||
f2 = fdopen(inPipe, "w");
|
||
} else {
|
||
f = fdopen(inPipe, "w");
|
||
}
|
||
}
|
||
Tcl_EnterFile(interp, f, permissions);
|
||
oFilePtr = tclOpenFiles[fileno(f)];
|
||
oFilePtr->f2 = f2;
|
||
oFilePtr->numPids = numPids;
|
||
oFilePtr->pidPtr = pidPtr;
|
||
oFilePtr->errorId = errorId;
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* GetOpenMode --
|
||
*
|
||
* description.
|
||
*
|
||
* Results:
|
||
* Normally, sets *modePtr to an access mode for passing to "open",
|
||
* and returns a string that can be used as the access mode in a
|
||
* subsequent call to "fdopen". If an error occurs, then returns
|
||
* NULL and sets interp->result to an error message.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
* Special note:
|
||
* This code is based on a prototype implementation contributed
|
||
* by Mark Diekhans.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static char *
|
||
GetOpenMode(interp, string, modePtr)
|
||
Tcl_Interp *interp; /* Interpreter to use for error
|
||
* reporting. */
|
||
char *string; /* Mode string, e.g. "r+" or
|
||
* "RDONLY CREAT". */
|
||
int *modePtr; /* Where to store mode corresponding
|
||
* to string. */
|
||
{
|
||
int mode, modeArgc, c, i, gotRW;
|
||
char **modeArgv, *flag;
|
||
#define RW_MODES (O_RDONLY|O_WRONLY|O_RDWR)
|
||
|
||
/*
|
||
* Check for the simpler fopen-like access modes (e.g. "r"). They
|
||
* are distinguished from the POSIX access modes by the presence
|
||
* of a lower-case first letter.
|
||
*/
|
||
|
||
mode = 0;
|
||
if (islower(UCHAR(string[0]))) {
|
||
switch (string[0]) {
|
||
case 'r':
|
||
mode = O_RDONLY;
|
||
break;
|
||
case 'w':
|
||
mode = O_WRONLY|O_CREAT|O_TRUNC;
|
||
break;
|
||
case 'a':
|
||
mode = O_WRONLY|O_CREAT|O_APPEND;
|
||
break;
|
||
default:
|
||
error:
|
||
Tcl_AppendResult(interp,
|
||
"illegal access mode \"", string, "\"", (char *) NULL);
|
||
return NULL;
|
||
}
|
||
if (string[1] == '+') {
|
||
mode &= ~(O_RDONLY|O_WRONLY);
|
||
mode |= O_RDWR;
|
||
if (string[2] != 0) {
|
||
goto error;
|
||
}
|
||
} else if (string[1] != 0) {
|
||
goto error;
|
||
}
|
||
*modePtr = mode;
|
||
return string;
|
||
}
|
||
|
||
/*
|
||
* The access modes are specified using a list of POSIX modes
|
||
* such as O_CREAT.
|
||
*/
|
||
|
||
if (Tcl_SplitList(interp, string, &modeArgc, &modeArgv) != TCL_OK) {
|
||
Tcl_AddErrorInfo(interp, "\n while processing open access modes \"");
|
||
Tcl_AddErrorInfo(interp, string);
|
||
Tcl_AddErrorInfo(interp, "\"");
|
||
return NULL;
|
||
}
|
||
gotRW = 0;
|
||
for (i = 0; i < modeArgc; i++) {
|
||
flag = modeArgv[i];
|
||
c = flag[0];
|
||
if ((c == 'R') && (strcmp(flag, "RDONLY") == 0)) {
|
||
mode = (mode & ~RW_MODES) | O_RDONLY;
|
||
gotRW = 1;
|
||
} else if ((c == 'W') && (strcmp(flag, "WRONLY") == 0)) {
|
||
mode = (mode & ~RW_MODES) | O_WRONLY;
|
||
gotRW = 1;
|
||
} else if ((c == 'R') && (strcmp(flag, "RDWR") == 0)) {
|
||
mode = (mode & ~RW_MODES) | O_RDWR;
|
||
gotRW = 1;
|
||
} else if ((c == 'A') && (strcmp(flag, "APPEND") == 0)) {
|
||
mode |= O_APPEND;
|
||
} else if ((c == 'C') && (strcmp(flag, "CREAT") == 0)) {
|
||
mode |= O_CREAT;
|
||
} else if ((c == 'E') && (strcmp(flag, "EXCL") == 0)) {
|
||
mode |= O_EXCL;
|
||
} else if ((c == 'N') && (strcmp(flag, "NOCTTY") == 0)) {
|
||
#ifdef O_NOCTTY
|
||
mode |= O_NOCTTY;
|
||
#else
|
||
Tcl_AppendResult(interp, "access mode \"", flag,
|
||
"\" not supported by this system", (char *) NULL);
|
||
ckfree((char *) modeArgv);
|
||
return NULL;
|
||
#endif
|
||
} else if ((c == 'N') && (strcmp(flag, "NONBLOCK") == 0)) {
|
||
#ifdef O_NONBLOCK
|
||
mode |= O_NONBLOCK;
|
||
#else
|
||
mode |= O_NDELAY;
|
||
#endif
|
||
} else if ((c == 'T') && (strcmp(flag, "TRUNC") == 0)) {
|
||
mode |= O_TRUNC;
|
||
} else {
|
||
Tcl_AppendResult(interp, "invalid access mode \"", flag,
|
||
"\": must be RDONLY, WRONLY, RDWR, APPEND, CREAT",
|
||
" EXCL, NOCTTY, NONBLOCK, or TRUNC", (char *) NULL);
|
||
ckfree((char *) modeArgv);
|
||
return NULL;
|
||
}
|
||
}
|
||
ckfree((char *) modeArgv);
|
||
if (!gotRW) {
|
||
Tcl_AppendResult(interp, "access mode must include either",
|
||
" RDONLY, WRONLY, or RDWR", (char *) NULL);
|
||
return NULL;
|
||
}
|
||
*modePtr = mode;
|
||
|
||
/*
|
||
* The calculation of fdopen access mode below isn't really correct,
|
||
* but it doesn't have to be. All it has to do is to disinguish
|
||
* read and write permissions, plus indicate append mode.
|
||
*/
|
||
|
||
i = mode & RW_MODES;
|
||
if (i == O_RDONLY) {
|
||
return "r";
|
||
}
|
||
if (mode & O_APPEND) {
|
||
if (i == O_WRONLY) {
|
||
return "a";
|
||
} else {
|
||
return "a+";
|
||
}
|
||
}
|
||
if (i == O_WRONLY) {
|
||
return "w";
|
||
}
|
||
return "r+";
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_PidCmd --
|
||
*
|
||
* This procedure is invoked to process the "pid" 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_PidCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
FILE *f;
|
||
OpenFile *oFilePtr;
|
||
int i;
|
||
char string[50];
|
||
|
||
if (argc > 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " ?fileId?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (argc == 1) {
|
||
sprintf(interp->result, "%d", getpid());
|
||
} else {
|
||
if (Tcl_GetOpenFile(interp, argv[1], 0, 0, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
oFilePtr = tclOpenFiles[fileno(f)];
|
||
for (i = 0; i < oFilePtr->numPids; i++) {
|
||
sprintf(string, "%d", oFilePtr->pidPtr[i]);
|
||
Tcl_AppendElement(interp, string);
|
||
}
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_PutsCmd --
|
||
*
|
||
* This procedure is invoked to process the "puts" 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_PutsCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
FILE *f;
|
||
int i, newline;
|
||
char *fileId;
|
||
|
||
i = 1;
|
||
newline = 1;
|
||
if ((argc >= 2) && (strcmp(argv[1], "-nonewline") == 0)) {
|
||
newline = 0;
|
||
i++;
|
||
}
|
||
if ((i < (argc-3)) || (i >= argc)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
"\" ?-nonewline? ?fileId? string", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* The code below provides backwards compatibility with an old
|
||
* form of the command that is no longer recommended or documented.
|
||
*/
|
||
|
||
if (i == (argc-3)) {
|
||
if (strncmp(argv[i+2], "nonewline", strlen(argv[i+2])) != 0) {
|
||
Tcl_AppendResult(interp, "bad argument \"", argv[i+2],
|
||
"\": should be \"nonewline\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
newline = 0;
|
||
}
|
||
if (i == (argc-1)) {
|
||
fileId = "stdout";
|
||
} else {
|
||
fileId = argv[i];
|
||
i++;
|
||
}
|
||
|
||
if (Tcl_GetOpenFile(interp, fileId, 1, 1, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
clearerr(f);
|
||
fputs(argv[i], f);
|
||
if (newline) {
|
||
fputc('\n', f);
|
||
}
|
||
if (ferror(f)) {
|
||
Tcl_AppendResult(interp, "error writing \"", fileId,
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_PwdCmd --
|
||
*
|
||
* This procedure is invoked to process the "pwd" 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_PwdCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
char buffer[MAXPATHLEN+1];
|
||
|
||
if (argc != 1) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], "\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (currentDir == NULL) {
|
||
if (getcwd(buffer, MAXPATHLEN+1) == NULL) {
|
||
if (errno == ERANGE) {
|
||
interp->result = "working directory name is too long";
|
||
} else {
|
||
Tcl_AppendResult(interp,
|
||
"error getting working directory name: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
}
|
||
return TCL_ERROR;
|
||
}
|
||
currentDir = (char *) ckalloc((unsigned) (strlen(buffer) + 1));
|
||
strcpy(currentDir, buffer);
|
||
}
|
||
interp->result = currentDir;
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_ReadCmd --
|
||
*
|
||
* This procedure is invoked to process the "read" 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_ReadCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int bytesLeft, bytesRead, count;
|
||
#define READ_BUF_SIZE 4096
|
||
char buffer[READ_BUF_SIZE+1];
|
||
int newline, i;
|
||
FILE *f;
|
||
|
||
if ((argc != 2) && (argc != 3)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" fileId ?numBytes?\" or \"", argv[0],
|
||
" ?-nonewline? fileId\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
i = 1;
|
||
newline = 1;
|
||
if ((argc == 3) && (strcmp(argv[1], "-nonewline") == 0)) {
|
||
newline = 0;
|
||
i++;
|
||
}
|
||
if (Tcl_GetOpenFile(interp, argv[i], 0, 1, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Compute how many bytes to read, and see whether the final
|
||
* newline should be dropped.
|
||
*/
|
||
|
||
if ((argc >= (i + 2)) && isdigit(UCHAR(argv[i+1][0]))) {
|
||
if (Tcl_GetInt(interp, argv[i+1], &bytesLeft) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
} else {
|
||
bytesLeft = 1<<30;
|
||
|
||
/*
|
||
* The code below provides backward compatibility for an
|
||
* archaic earlier version of this command.
|
||
*/
|
||
|
||
if (argc >= (i + 2)) {
|
||
if (strncmp(argv[i+1], "nonewline", strlen(argv[i+1])) == 0) {
|
||
newline = 0;
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad argument \"", argv[i+1],
|
||
"\": should be \"nonewline\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Read the file in one or more chunks.
|
||
*/
|
||
|
||
bytesRead = 0;
|
||
clearerr(f);
|
||
while (bytesLeft > 0) {
|
||
count = READ_BUF_SIZE;
|
||
if (bytesLeft < READ_BUF_SIZE) {
|
||
count = bytesLeft;
|
||
}
|
||
count = fread(buffer, 1, count, f);
|
||
if (ferror(f)) {
|
||
/*
|
||
* If the file is in non-blocking mode, break out of the
|
||
* loop and return any bytes that were read.
|
||
*/
|
||
|
||
if ((errno == EWOULDBLOCK) && ((count > 0) || (bytesRead > 0))) {
|
||
clearerr(f);
|
||
bytesLeft = count;
|
||
} else {
|
||
Tcl_ResetResult(interp);
|
||
Tcl_AppendResult(interp, "error reading \"", argv[i],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (count == 0) {
|
||
break;
|
||
}
|
||
buffer[count] = 0;
|
||
Tcl_AppendResult(interp, buffer, (char *) NULL);
|
||
bytesLeft -= count;
|
||
bytesRead += count;
|
||
}
|
||
if ((newline == 0) && (bytesRead > 0)
|
||
&& (interp->result[bytesRead-1] == '\n')) {
|
||
interp->result[bytesRead-1] = 0;
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_SeekCmd --
|
||
*
|
||
* This procedure is invoked to process the "seek" 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_SeekCmd(notUsed, interp, argc, argv)
|
||
ClientData notUsed; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
FILE *f;
|
||
int offset, mode;
|
||
|
||
if ((argc != 3) && (argc != 4)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" fileId offset ?origin?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (Tcl_GetOpenFile(interp, argv[1], 0, 0, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (Tcl_GetInt(interp, argv[2], &offset) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
mode = SEEK_SET;
|
||
if (argc == 4) {
|
||
int length;
|
||
char c;
|
||
|
||
length = strlen(argv[3]);
|
||
c = argv[3][0];
|
||
if ((c == 's') && (strncmp(argv[3], "start", length) == 0)) {
|
||
mode = SEEK_SET;
|
||
} else if ((c == 'c') && (strncmp(argv[3], "current", length) == 0)) {
|
||
mode = SEEK_CUR;
|
||
} else if ((c == 'e') && (strncmp(argv[3], "end", length) == 0)) {
|
||
mode = SEEK_END;
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad origin \"", argv[3],
|
||
"\": should be start, current, or end", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
clearerr(f);
|
||
if (fseek(f, (long) offset, mode) == -1) {
|
||
Tcl_AppendResult(interp, "error during seek: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_SourceCmd --
|
||
*
|
||
* This procedure is invoked to process the "source" 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_SourceCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
if (argc != 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" fileName\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
return Tcl_EvalFile(interp, argv[1]);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_TellCmd --
|
||
*
|
||
* This procedure is invoked to process the "tell" 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_TellCmd(notUsed, interp, argc, argv)
|
||
ClientData notUsed; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
FILE *f;
|
||
|
||
if (argc != 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" fileId\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (Tcl_GetOpenFile(interp, argv[1], 0, 0, &f) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
sprintf(interp->result, "%d", ftell(f));
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_TimeCmd --
|
||
*
|
||
* This procedure is invoked to process the "time" 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_TimeCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int count, i, result;
|
||
double timePer;
|
||
#if NO_GETTOD
|
||
struct tms dummy2;
|
||
long start, stop;
|
||
#else
|
||
struct timeval start, stop;
|
||
struct timezone tz;
|
||
int micros;
|
||
#endif
|
||
|
||
if (argc == 2) {
|
||
count = 1;
|
||
} else if (argc == 3) {
|
||
if (Tcl_GetInt(interp, argv[2], &count) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
} else {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" command ?count?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
#if NO_GETTOD
|
||
start = times(&dummy2);
|
||
#else
|
||
gettimeofday(&start, &tz);
|
||
#endif
|
||
for (i = count ; i > 0; i--) {
|
||
result = Tcl_Eval(interp, argv[1]);
|
||
if (result != TCL_OK) {
|
||
if (result == TCL_ERROR) {
|
||
char msg[60];
|
||
sprintf(msg, "\n (\"time\" body line %d)",
|
||
interp->errorLine);
|
||
Tcl_AddErrorInfo(interp, msg);
|
||
}
|
||
return result;
|
||
}
|
||
}
|
||
#if NO_GETTOD
|
||
stop = times(&dummy2);
|
||
timePer = (((double) (stop - start))*1000000.0)/CLK_TCK;
|
||
#else
|
||
gettimeofday(&stop, &tz);
|
||
micros = (stop.tv_sec - start.tv_sec)*1000000
|
||
+ (stop.tv_usec - start.tv_usec);
|
||
timePer = micros;
|
||
#endif
|
||
Tcl_ResetResult(interp);
|
||
sprintf(interp->result, "%.0f microseconds per iteration", timePer/count);
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* CleanupChildren --
|
||
*
|
||
* This is a utility procedure used to wait for child processes
|
||
* to exit, record information about abnormal exits, and then
|
||
* collect any stderr output generated by them.
|
||
*
|
||
* Results:
|
||
* The return value is a standard Tcl result. If anything at
|
||
* weird happened with the child processes, TCL_ERROR is returned
|
||
* and a message is left in interp->result.
|
||
*
|
||
* Side effects:
|
||
* If the last character of interp->result is a newline, then it
|
||
* is removed unless keepNewline is non-zero. File errorId gets
|
||
* closed, and pidPtr is freed back to the storage allocator.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
CleanupChildren(interp, numPids, pidPtr, errorId, keepNewline)
|
||
Tcl_Interp *interp; /* Used for error messages. */
|
||
int numPids; /* Number of entries in pidPtr array. */
|
||
int *pidPtr; /* Array of process ids of children. */
|
||
int errorId; /* File descriptor index for file containing
|
||
* stderr output from pipeline. -1 means
|
||
* there isn't any stderr output. */
|
||
int keepNewline; /* Non-zero means don't discard trailing
|
||
* newline. */
|
||
{
|
||
int result = TCL_OK;
|
||
int i, pid, length, abnormalExit;
|
||
WAIT_STATUS_TYPE waitStatus;
|
||
|
||
abnormalExit = 0;
|
||
for (i = 0; i < numPids; i++) {
|
||
pid = waitpid(pidPtr[i], (int *) &waitStatus, 0);
|
||
if (pid == -1) {
|
||
Tcl_AppendResult(interp, "error waiting for process to exit: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
continue;
|
||
}
|
||
|
||
/*
|
||
* Create error messages for unusual process exits. An
|
||
* extra newline gets appended to each error message, but
|
||
* it gets removed below (in the same fashion that an
|
||
* extra newline in the command's output is removed).
|
||
*/
|
||
|
||
if (!WIFEXITED(waitStatus) || (WEXITSTATUS(waitStatus) != 0)) {
|
||
char msg1[20], msg2[20];
|
||
|
||
result = TCL_ERROR;
|
||
sprintf(msg1, "%d", pid);
|
||
if (WIFEXITED(waitStatus)) {
|
||
sprintf(msg2, "%d", WEXITSTATUS(waitStatus));
|
||
Tcl_SetErrorCode(interp, "CHILDSTATUS", msg1, msg2,
|
||
(char *) NULL);
|
||
abnormalExit = 1;
|
||
} else if (WIFSIGNALED(waitStatus)) {
|
||
char *p;
|
||
|
||
p = Tcl_SignalMsg((int) (WTERMSIG(waitStatus)));
|
||
Tcl_SetErrorCode(interp, "CHILDKILLED", msg1,
|
||
Tcl_SignalId((int) (WTERMSIG(waitStatus))), p,
|
||
(char *) NULL);
|
||
Tcl_AppendResult(interp, "child killed: ", p, "\n",
|
||
(char *) NULL);
|
||
} else if (WIFSTOPPED(waitStatus)) {
|
||
char *p;
|
||
|
||
p = Tcl_SignalMsg((int) (WSTOPSIG(waitStatus)));
|
||
Tcl_SetErrorCode(interp, "CHILDSUSP", msg1,
|
||
Tcl_SignalId((int) (WSTOPSIG(waitStatus))), p, (char *) NULL);
|
||
Tcl_AppendResult(interp, "child suspended: ", p, "\n",
|
||
(char *) NULL);
|
||
} else {
|
||
Tcl_AppendResult(interp,
|
||
"child wait status didn't make sense\n",
|
||
(char *) NULL);
|
||
}
|
||
}
|
||
}
|
||
ckfree((char *) pidPtr);
|
||
|
||
/*
|
||
* Read the standard error file. If there's anything there,
|
||
* then return an error and add the file's contents to the result
|
||
* string.
|
||
*/
|
||
|
||
if (errorId >= 0) {
|
||
while (1) {
|
||
# define BUFFER_SIZE 1000
|
||
char buffer[BUFFER_SIZE+1];
|
||
int count;
|
||
|
||
count = read(errorId, buffer, (size_t) BUFFER_SIZE);
|
||
|
||
if (count == 0) {
|
||
break;
|
||
}
|
||
result = TCL_ERROR;
|
||
if (count < 0) {
|
||
Tcl_AppendResult(interp,
|
||
"error reading stderr output file: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
break;
|
||
}
|
||
buffer[count] = 0;
|
||
Tcl_AppendResult(interp, buffer, (char *) NULL);
|
||
}
|
||
close(errorId);
|
||
}
|
||
|
||
/*
|
||
* If a child exited abnormally but didn't output any error information
|
||
* at all, generate an error message here.
|
||
*/
|
||
|
||
if (abnormalExit && (*interp->result == 0)) {
|
||
Tcl_AppendResult(interp, "child process exited abnormally",
|
||
(char *) NULL);
|
||
}
|
||
|
||
/*
|
||
* If the last character of interp->result is a newline, then remove
|
||
* the newline character (the newline would just confuse things).
|
||
* Special hack: must replace the old terminating null character
|
||
* as a signal to Tcl_AppendResult et al. that we've mucked with
|
||
* the string.
|
||
*/
|
||
|
||
length = strlen(interp->result);
|
||
if (!keepNewline && (length > 0) && (interp->result[length-1] == '\n')) {
|
||
interp->result[length-1] = '\0';
|
||
interp->result[length] = 'x';
|
||
}
|
||
|
||
return result;
|
||
}
|