diff options
Diffstat (limited to 'contrib/tcl/generic/tclCmdAH.c')
-rw-r--r-- | contrib/tcl/generic/tclCmdAH.c | 1678 |
1 files changed, 1678 insertions, 0 deletions
diff --git a/contrib/tcl/generic/tclCmdAH.c b/contrib/tcl/generic/tclCmdAH.c new file mode 100644 index 000000000000..526a11181ac7 --- /dev/null +++ b/contrib/tcl/generic/tclCmdAH.c @@ -0,0 +1,1678 @@ +/* + * 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) 1994-1996 Sun Microsystems, Inc. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * SCCS: @(#) tclCmdAH.c 1.107 96/04/09 17:14:39 + */ + +#include "tclInt.h" +#include "tclPort.h" + +/* + * Prototypes for local procedures defined in this file: + */ + +static char * GetTypeFromMode _ANSI_ARGS_((int mode)); +static int StoreStatData _ANSI_ARGS_((Tcl_Interp *interp, + char *varName, struct stat *statPtr)); + +/* + *---------------------------------------------------------------------- + * + * Tcl_BreakCmd -- + * + * This procedure is invoked to process the "break" 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_BreakCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + if (argc != 1) { + Tcl_AppendResult(interp, "wrong # args: should be \"", + argv[0], "\"", (char *) NULL); + return TCL_ERROR; + } + return TCL_BREAK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_CaseCmd -- + * + * This procedure is invoked to process the "case" 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_CaseCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + int i, result; + int body; + char *string; + int caseArgc, splitArgs; + char **caseArgv; + + if (argc < 3) { + Tcl_AppendResult(interp, "wrong # args: should be \"", + argv[0], " string ?in? patList body ... ?default body?\"", + (char *) NULL); + return TCL_ERROR; + } + string = argv[1]; + body = -1; + if (strcmp(argv[2], "in") == 0) { + i = 3; + } else { + i = 2; + } + caseArgc = argc - i; + caseArgv = argv + i; + + /* + * If all of the pattern/command pairs are lumped into a single + * argument, split them out again. + */ + + splitArgs = 0; + if (caseArgc == 1) { + result = Tcl_SplitList(interp, caseArgv[0], &caseArgc, &caseArgv); + if (result != TCL_OK) { + return result; + } + splitArgs = 1; + } + + for (i = 0; i < caseArgc; i += 2) { + int patArgc, j; + char **patArgv; + register char *p; + + if (i == (caseArgc-1)) { + interp->result = "extra case pattern with no body"; + result = TCL_ERROR; + goto cleanup; + } + + /* + * Check for special case of single pattern (no list) with + * no backslash sequences. + */ + + for (p = caseArgv[i]; *p != 0; p++) { + if (isspace(UCHAR(*p)) || (*p == '\\')) { + break; + } + } + if (*p == 0) { + if ((*caseArgv[i] == 'd') + && (strcmp(caseArgv[i], "default") == 0)) { + body = i+1; + } + if (Tcl_StringMatch(string, caseArgv[i])) { + body = i+1; + goto match; + } + continue; + } + + /* + * Break up pattern lists, then check each of the patterns + * in the list. + */ + + result = Tcl_SplitList(interp, caseArgv[i], &patArgc, &patArgv); + if (result != TCL_OK) { + goto cleanup; + } + for (j = 0; j < patArgc; j++) { + if (Tcl_StringMatch(string, patArgv[j])) { + body = i+1; + break; + } + } + ckfree((char *) patArgv); + if (j < patArgc) { + break; + } + } + + match: + if (body != -1) { + result = Tcl_Eval(interp, caseArgv[body]); + if (result == TCL_ERROR) { + char msg[100]; + sprintf(msg, "\n (\"%.50s\" arm line %d)", caseArgv[body-1], + interp->errorLine); + Tcl_AddErrorInfo(interp, msg); + } + goto cleanup; + } + + /* + * Nothing matched: return nothing. + */ + + result = TCL_OK; + + cleanup: + if (splitArgs) { + ckfree((char *) caseArgv); + } + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_CatchCmd -- + * + * This procedure is invoked to process the "catch" 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_CatchCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + int result; + + if ((argc != 2) && (argc != 3)) { + Tcl_AppendResult(interp, "wrong # args: should be \"", + argv[0], " command ?varName?\"", (char *) NULL); + return TCL_ERROR; + } + result = Tcl_Eval(interp, argv[1]); + if (argc == 3) { + if (Tcl_SetVar(interp, argv[2], interp->result, 0) == NULL) { + Tcl_SetResult(interp, "couldn't save command result in variable", + TCL_STATIC); + return TCL_ERROR; + } + } + Tcl_ResetResult(interp); + sprintf(interp->result, "%d", result); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_CdCmd -- + * + * 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_CdCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + char *dirName; + Tcl_DString buffer; + int result; + + if (argc > 2) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " dirName\"", (char *) NULL); + return TCL_ERROR; + } + + if (argc == 2) { + dirName = argv[1]; + } else { + dirName = "~"; + } + dirName = Tcl_TranslateFileName(interp, dirName, &buffer); + if (dirName == NULL) { + return TCL_ERROR; + } + result = TclChdir(interp, dirName); + Tcl_DStringFree(&buffer); + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ConcatCmd -- + * + * This procedure is invoked to process the "concat" 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_ConcatCmd(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) { + interp->result = Tcl_Concat(argc-1, argv+1); + interp->freeProc = TCL_DYNAMIC; + } + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ContinueCmd -- + * + * This procedure is invoked to process the "continue" 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_ContinueCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + if (argc != 1) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + "\"", (char *) NULL); + return TCL_ERROR; + } + return TCL_CONTINUE; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ErrorCmd -- + * + * This procedure is invoked to process the "error" 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_ErrorCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + Interp *iPtr = (Interp *) interp; + + if ((argc < 2) || (argc > 4)) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " message ?errorInfo? ?errorCode?\"", (char *) NULL); + return TCL_ERROR; + } + if ((argc >= 3) && (argv[2][0] != 0)) { + Tcl_AddErrorInfo(interp, argv[2]); + iPtr->flags |= ERR_ALREADY_LOGGED; + } + if (argc == 4) { + Tcl_SetVar2(interp, "errorCode", (char *) NULL, argv[3], + TCL_GLOBAL_ONLY); + iPtr->flags |= ERROR_CODE_SET; + } + Tcl_SetResult(interp, argv[1], TCL_VOLATILE); + return TCL_ERROR; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_EvalCmd -- + * + * This procedure is invoked to process the "eval" 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_EvalCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + int result; + char *cmd; + + if (argc < 2) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " arg ?arg ...?\"", (char *) NULL); + return TCL_ERROR; + } + if (argc == 2) { + result = Tcl_Eval(interp, argv[1]); + } else { + + /* + * More than one argument: concatenate them together with spaces + * between, then evaluate the result. + */ + + cmd = Tcl_Concat(argc-1, argv+1); + result = Tcl_Eval(interp, cmd); + ckfree(cmd); + } + if (result == TCL_ERROR) { + char msg[60]; + sprintf(msg, "\n (\"eval\" body line %d)", interp->errorLine); + Tcl_AddErrorInfo(interp, msg); + } + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ExitCmd -- + * + * This procedure is invoked to process the "exit" 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_ExitCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + int value; + + if ((argc != 1) && (argc != 2)) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " ?returnCode?\"", (char *) NULL); + return TCL_ERROR; + } + if (argc == 1) { + value = 0; + } else if (Tcl_GetInt(interp, argv[1], &value) != TCL_OK) { + return TCL_ERROR; + } + Tcl_Exit(value); + /*NOTREACHED*/ + return TCL_OK; /* Better not ever reach this! */ +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ExprCmd -- + * + * This procedure is invoked to process the "expr" 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_ExprCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + Tcl_DString buffer; + int i, result; + + if (argc < 2) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " arg ?arg ...?\"", (char *) NULL); + return TCL_ERROR; + } + + if (argc == 2) { + return Tcl_ExprString(interp, argv[1]); + } + Tcl_DStringInit(&buffer); + Tcl_DStringAppend(&buffer, argv[1], -1); + for (i = 2; i < argc; i++) { + Tcl_DStringAppend(&buffer, " ", 1); + Tcl_DStringAppend(&buffer, argv[i], -1); + } + result = Tcl_ExprString(interp, buffer.string); + Tcl_DStringFree(&buffer); + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_FileCmd -- + * + * This procedure is invoked to process the "file" 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_FileCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + char *fileName, *extension; + int c, statOp, result; + size_t length; + int mode = 0; /* Initialized only to prevent + * compiler warning message. */ + struct stat statBuf; + Tcl_DString buffer; + + if (argc < 3) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " option name ?arg ...?\"", (char *) NULL); + return TCL_ERROR; + } + c = argv[1][0]; + length = strlen(argv[1]); + result = TCL_OK; + Tcl_DStringInit(&buffer); + + /* + * First handle operations on the file name. + */ + + if ((c == 'd') && (strncmp(argv[1], "dirname", length) == 0)) { + int pargc; + char **pargv; + + if (argc != 3) { + argv[1] = "dirname"; + goto not3Args; + } + + fileName = argv[2]; + + /* + * If there is only one element, and it starts with a tilde, + * perform tilde substitution and resplit the path. + */ + + Tcl_SplitPath(fileName, &pargc, &pargv); + if ((pargc == 1) && (*fileName == '~')) { + ckfree((char*) pargv); + fileName = Tcl_TranslateFileName(interp, fileName, &buffer); + if (fileName == NULL) { + result = TCL_ERROR; + goto done; + } + Tcl_SplitPath(fileName, &pargc, &pargv); + Tcl_DStringSetLength(&buffer, 0); + } + + /* + * Return all but the last component. If there is only one + * component, return it if the path was non-relative, otherwise + * return the current directory. + */ + + if (pargc > 1) { + Tcl_JoinPath(pargc-1, pargv, &buffer); + Tcl_DStringResult(interp, &buffer); + } else if ((pargc == 0) + || (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) { + Tcl_SetResult(interp, + (tclPlatform == TCL_PLATFORM_MAC) ? ":" : ".", TCL_STATIC); + } else { + Tcl_SetResult(interp, pargv[0], TCL_VOLATILE); + } + ckfree((char *)pargv); + goto done; + + } else if ((c == 't') && (strncmp(argv[1], "tail", length) == 0) + && (length >= 2)) { + int pargc; + char **pargv; + + if (argc != 3) { + argv[1] = "tail"; + goto not3Args; + } + + Tcl_SplitPath(argv[2], &pargc, &pargv); + if (pargc > 0) { + if ((pargc > 1) + || (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) { + Tcl_SetResult(interp, pargv[pargc-1], TCL_VOLATILE); + } + } + ckfree((char *)pargv); + goto done; + + } else if ((c == 'r') && (strncmp(argv[1], "rootname", length) == 0) + && (length >= 2)) { + char tmp; + if (argc != 3) { + argv[1] = "rootname"; + goto not3Args; + } + extension = TclGetExtension(argv[2]); + if (extension == NULL) { + Tcl_SetResult(interp, argv[2], TCL_VOLATILE); + } else { + tmp = *extension; + *extension = 0; + Tcl_SetResult(interp, argv[2], TCL_VOLATILE); + *extension = tmp; + } + goto done; + } else if ((c == 'e') && (strncmp(argv[1], "extension", length) == 0) + && (length >= 3)) { + if (argc != 3) { + argv[1] = "extension"; + goto not3Args; + } + extension = TclGetExtension(argv[2]); + + if (extension != NULL) { + Tcl_SetResult(interp, extension, TCL_VOLATILE); + } + goto done; + } else if ((c == 'p') && (strncmp(argv[1], "pathtype", length) == 0)) { + if (argc != 3) { + argv[1] = "pathtype"; + goto not3Args; + } + switch (Tcl_GetPathType(argv[2])) { + case TCL_PATH_ABSOLUTE: + Tcl_SetResult(interp, "absolute", TCL_STATIC); + break; + case TCL_PATH_RELATIVE: + Tcl_SetResult(interp, "relative", TCL_STATIC); + break; + case TCL_PATH_VOLUME_RELATIVE: + Tcl_SetResult(interp, "volumerelative", TCL_STATIC); + break; + } + goto done; + } else if ((c == 's') && (strncmp(argv[1], "split", length) == 0) + && (length >= 2)) { + int pargc, i; + char **pargvList; + + if (argc != 3) { + argv[1] = "split"; + goto not3Args; + } + + Tcl_SplitPath(argv[2], &pargc, &pargvList); + for (i = 0; i < pargc; i++) { + Tcl_AppendElement(interp, pargvList[i]); + } + ckfree((char *) pargvList); + goto done; + } else if ((c == 'j') && (strncmp(argv[1], "join", length) == 0)) { + Tcl_JoinPath(argc-2, argv+2, &buffer); + Tcl_DStringResult(interp, &buffer); + goto done; + } + + /* + * Next, handle operations that can be satisfied with the "access" + * kernel call. + */ + + fileName = Tcl_TranslateFileName(interp, argv[2], &buffer); + if (fileName == NULL) { + result = TCL_ERROR; + goto done; + } + 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", (long) 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", (long) 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, "%lu", (unsigned long) 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 = GetTypeFromMode((int) statBuf.st_mode); + goto done; + } else { + Tcl_AppendResult(interp, "bad option \"", argv[1], + "\": should be atime, dirname, executable, exists, ", + "extension, isdirectory, isfile, join, ", + "lstat, mtime, owned, pathtype, readable, readlink, ", + "root, size, split, 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: + /* + * For Windows and Macintosh, there are no user ids + * associated with a file, so we always return 1. + */ + +#if (defined(__WIN32__) || defined(MAC_TCL)) + mode = 1; +#else + mode = (geteuid() == statBuf.st_uid); +#endif + 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; + + not3Args: + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " ", argv[1], " name\"", (char *) NULL); + result = TCL_ERROR; + goto done; +} + +/* + *---------------------------------------------------------------------- + * + * 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, "%ld", (long) statPtr->st_dev); + if (Tcl_SetVar2(interp, varName, "dev", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_ino); + if (Tcl_SetVar2(interp, varName, "ino", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_mode); + if (Tcl_SetVar2(interp, varName, "mode", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_nlink); + if (Tcl_SetVar2(interp, varName, "nlink", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_uid); + if (Tcl_SetVar2(interp, varName, "uid", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_gid); + if (Tcl_SetVar2(interp, varName, "gid", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%lu", (unsigned long) statPtr->st_size); + if (Tcl_SetVar2(interp, varName, "size", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_atime); + if (Tcl_SetVar2(interp, varName, "atime", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_mtime); + if (Tcl_SetVar2(interp, varName, "mtime", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + sprintf(string, "%ld", (long) statPtr->st_ctime); + if (Tcl_SetVar2(interp, varName, "ctime", string, TCL_LEAVE_ERR_MSG) + == NULL) { + return TCL_ERROR; + } + if (Tcl_SetVar2(interp, varName, "type", + GetTypeFromMode((int) statPtr->st_mode), TCL_LEAVE_ERR_MSG) == NULL) { + return TCL_ERROR; + } + 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 char * +GetTypeFromMode(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_ForCmd -- + * + * This procedure is invoked to process the "for" 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_ForCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + int result, value; + + if (argc != 5) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " start test next command\"", (char *) NULL); + return TCL_ERROR; + } + + result = Tcl_Eval(interp, argv[1]); + if (result != TCL_OK) { + if (result == TCL_ERROR) { + Tcl_AddErrorInfo(interp, "\n (\"for\" initial command)"); + } + return result; + } + while (1) { + result = Tcl_ExprBoolean(interp, argv[2], &value); + if (result != TCL_OK) { + return result; + } + if (!value) { + break; + } + result = Tcl_Eval(interp, argv[4]); + if ((result != TCL_OK) && (result != TCL_CONTINUE)) { + if (result == TCL_ERROR) { + char msg[60]; + sprintf(msg, "\n (\"for\" body line %d)", interp->errorLine); + Tcl_AddErrorInfo(interp, msg); + } + break; + } + result = Tcl_Eval(interp, argv[3]); + if (result == TCL_BREAK) { + break; + } else if (result != TCL_OK) { + if (result == TCL_ERROR) { + Tcl_AddErrorInfo(interp, "\n (\"for\" loop-end command)"); + } + return result; + } + } + if (result == TCL_BREAK) { + result = TCL_OK; + } + if (result == TCL_OK) { + Tcl_ResetResult(interp); + } + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ForeachCmd -- + * + * This procedure is invoked to process the "foreach" 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_ForeachCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + int result = TCL_OK; + int i; /* i selects a value list */ + int j, maxj; /* Number of loop iterations */ + int v; /* v selects a loop variable */ + int numLists; /* Count of value lists */ +#define STATIC_SIZE 4 + int indexArray[STATIC_SIZE]; /* Array of value list indices */ + int varcListArray[STATIC_SIZE]; /* Number of loop variables per list */ + char **varvListArray[STATIC_SIZE]; /* Array of variable name lists */ + int argcListArray[STATIC_SIZE]; /* Array of value list sizes */ + char **argvListArray[STATIC_SIZE]; /* Array of value lists */ + + int *index = indexArray; + int *varcList = varcListArray; + char ***varvList = varvListArray; + int *argcList = argcListArray; + char ***argvList = argvListArray; + + if (argc < 4 || (argc%2 != 0)) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " varList list ?varList list ...? command\"", (char *) NULL); + return TCL_ERROR; + } + + /* + * Manage numList parallel value lists. + * argvList[i] is a value list counted by argcList[i] + * varvList[i] is the list of variables associated with the value list + * varcList[i] is the number of variables associated with the value list + * index[i] is the current pointer into the value list argvList[i] + */ + + numLists = (argc-2)/2; + if (numLists > STATIC_SIZE) { + index = (int *) ckalloc(numLists * sizeof(int)); + varcList = (int *) ckalloc(numLists * sizeof(int)); + varvList = (char ***) ckalloc(numLists * sizeof(char **)); + argcList = (int *) ckalloc(numLists * sizeof(int)); + argvList = (char ***) ckalloc(numLists * sizeof(char **)); + } + for (i=0 ; i<numLists ; i++) { + index[i] = 0; + varcList[i] = 0; + varvList[i] = (char **)NULL; + argcList[i] = 0; + argvList[i] = (char **)NULL; + } + + /* + * Break up the value lists and variable lists into elements + */ + + maxj = 0; + for (i=0 ; i<numLists ; i++) { + result = Tcl_SplitList(interp, argv[1+i*2], &varcList[i], &varvList[i]); + if (result != TCL_OK) { + goto errorReturn; + } + result = Tcl_SplitList(interp, argv[2+i*2], &argcList[i], &argvList[i]); + if (result != TCL_OK) { + goto errorReturn; + } + j = argcList[i] / varcList[i]; + if ((argcList[i] % varcList[i]) != 0) { + j++; + } + if (j > maxj) { + maxj = j; + } + } + + /* + * Iterate maxj times through the lists in parallel + * If some value lists run out of values, set loop vars to "" + */ + for (j = 0; j < maxj; j++) { + for (i=0 ; i<numLists ; i++) { + for (v=0 ; v<varcList[i] ; v++) { + int k = index[i]++; + char *value = ""; + if (k < argcList[i]) { + value = argvList[i][k]; + } + if (Tcl_SetVar(interp, varvList[i][v], value, 0) == NULL) { + Tcl_AppendResult(interp, "couldn't set loop variable: \"", + varvList[i][v], "\"", (char *)NULL); + result = TCL_ERROR; + goto errorReturn; + } + } + } + + result = Tcl_Eval(interp, argv[argc-1]); + if (result != TCL_OK) { + if (result == TCL_CONTINUE) { + result = TCL_OK; + } else if (result == TCL_BREAK) { + result = TCL_OK; + break; + } else if (result == TCL_ERROR) { + char msg[100]; + sprintf(msg, "\n (\"foreach\" body line %d)", + interp->errorLine); + Tcl_AddErrorInfo(interp, msg); + break; + } else { + break; + } + } + } + if (result == TCL_OK) { + Tcl_ResetResult(interp); + } +errorReturn: + for (i=0 ; i<numLists ; i++) { + if (argvList[i] != (char **)NULL) { + ckfree((char *) argvList[i]); + } + if (varvList[i] != (char **)NULL) { + ckfree((char *) varvList[i]); + } + } + if (numLists > STATIC_SIZE) { + ckfree((char *) index); + ckfree((char *) varcList); + ckfree((char *) argcList); + ckfree((char *) varvList); + ckfree((char *) argvList); + } +#undef STATIC_SIZE + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_FormatCmd -- + * + * 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_FormatCmd(dummy, interp, argc, argv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int argc; /* Number of arguments. */ + char **argv; /* Argument strings. */ +{ + register char *format; /* Used to read characters from the format + * string. */ + char newFormat[40]; /* A new format specifier is generated here. */ + int width; /* Field width from field specifier, or 0 if + * no width given. */ + int precision; /* Field precision from field specifier, or 0 + * if no precision given. */ + int size; /* Number of bytes needed for result of + * conversion, based on type of conversion + * ("e", "s", etc.), width, and precision. */ + int intValue; /* Used to hold value to pass to sprintf, if + * it's a one-word integer or char value */ + char *ptrValue = NULL; /* Used to hold value to pass to sprintf, if + * it's a one-word value. */ + double doubleValue; /* Used to hold value to pass to sprintf if + * it's a double value. */ + int whichValue; /* Indicates which of intValue, ptrValue, + * or doubleValue has the value to pass to + * sprintf, according to the following + * definitions: */ +# define INT_VALUE 0 +# define PTR_VALUE 1 +# define DOUBLE_VALUE 2 + char *dst = interp->result; /* Where result is stored. Starts off at + * interp->resultSpace, but may get dynamically + * re-allocated if this isn't enough. */ + int dstSize = 0; /* Number of non-null characters currently + * stored at dst. */ + int dstSpace = TCL_RESULT_SIZE; + /* Total amount of storage space available + * in dst (not including null terminator. */ + int noPercent; /* Special case for speed: indicates there's + * no field specifier, just a string to copy. */ + int argIndex; /* Index of argument to substitute next. */ + int gotXpg = 0; /* Non-zero means that an XPG3 %n$-style + * specifier has been seen. */ + int gotSequential = 0; /* Non-zero means that a regular sequential + * (non-XPG3) conversion specifier has been + * seen. */ + int useShort; /* Value to be printed is short (half word). */ + char *end; /* Used to locate end of numerical fields. */ + + /* + * This procedure is a bit nasty. The goal is to use sprintf to + * do most of the dirty work. There are several problems: + * 1. this procedure can't trust its arguments. + * 2. we must be able to provide a large enough result area to hold + * whatever's generated. This is hard to estimate. + * 2. there's no way to move the arguments from argv to the call + * to sprintf in a reasonable way. This is particularly nasty + * because some of the arguments may be two-word values (doubles). + * So, what happens here is to scan the format string one % group + * at a time, making many individual calls to sprintf. + */ + + if (argc < 2) { + Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], + " formatString ?arg arg ...?\"", (char *) NULL); + return TCL_ERROR; + } + argIndex = 2; + for (format = argv[1]; *format != 0; ) { + register char *newPtr = newFormat; + + width = precision = noPercent = useShort = 0; + whichValue = PTR_VALUE; + + /* + * Get rid of any characters before the next field specifier. + */ + + if (*format != '%') { + register char *p; + + ptrValue = p = format; + while ((*format != '%') && (*format != 0)) { + *p = *format; + p++; + format++; + } + size = p - ptrValue; + noPercent = 1; + goto doField; + } + + if (format[1] == '%') { + ptrValue = format; + size = 1; + noPercent = 1; + format += 2; + goto doField; + } + + /* + * Parse off a field specifier, compute how many characters + * will be needed to store the result, and substitute for + * "*" size specifiers. + */ + + *newPtr = '%'; + newPtr++; + format++; + if (isdigit(UCHAR(*format))) { + int tmp; + + /* + * Check for an XPG3-style %n$ specification. Note: there + * must not be a mixture of XPG3 specs and non-XPG3 specs + * in the same format string. + */ + + tmp = strtoul(format, &end, 10); + if (*end != '$') { + goto notXpg; + } + format = end+1; + gotXpg = 1; + if (gotSequential) { + goto mixedXPG; + } + argIndex = tmp+1; + if ((argIndex < 2) || (argIndex >= argc)) { + goto badIndex; + } + goto xpgCheckDone; + } + + notXpg: + gotSequential = 1; + if (gotXpg) { + goto mixedXPG; + } + + xpgCheckDone: + while ((*format == '-') || (*format == '#') || (*format == '0') + || (*format == ' ') || (*format == '+')) { + *newPtr = *format; + newPtr++; + format++; + } + if (isdigit(UCHAR(*format))) { + width = strtoul(format, &end, 10); + format = end; + } else if (*format == '*') { + if (argIndex >= argc) { + goto badIndex; + } + if (Tcl_GetInt(interp, argv[argIndex], &width) != TCL_OK) { + goto fmtError; + } + argIndex++; + format++; + } + if (width > 1000) { + /* + * Don't allow arbitrarily large widths: could cause core + * dump when we try to allocate a zillion bytes of memory + * below. + */ + + width = 1000; + } else if (width < 0) { + width = 0; + } + if (width != 0) { + sprintf(newPtr, "%d", width); + while (*newPtr != 0) { + newPtr++; + } + } + if (*format == '.') { + *newPtr = '.'; + newPtr++; + format++; + } + if (isdigit(UCHAR(*format))) { + precision = strtoul(format, &end, 10); + format = end; + } else if (*format == '*') { + if (argIndex >= argc) { + goto badIndex; + } + if (Tcl_GetInt(interp, argv[argIndex], &precision) != TCL_OK) { + goto fmtError; + } + argIndex++; + format++; + } + if (precision != 0) { + sprintf(newPtr, "%d", precision); + while (*newPtr != 0) { + newPtr++; + } + } + if (*format == 'l') { + format++; + } else if (*format == 'h') { + useShort = 1; + *newPtr = 'h'; + newPtr++; + format++; + } + *newPtr = *format; + newPtr++; + *newPtr = 0; + if (argIndex >= argc) { + goto badIndex; + } + switch (*format) { + case 'i': + newPtr[-1] = 'd'; + case 'd': + case 'o': + case 'u': + case 'x': + case 'X': + if (Tcl_GetInt(interp, argv[argIndex], (int *) &intValue) + != TCL_OK) { + goto fmtError; + } + whichValue = INT_VALUE; + size = 40 + precision; + break; + case 's': + ptrValue = argv[argIndex]; + size = strlen(argv[argIndex]); + break; + case 'c': + if (Tcl_GetInt(interp, argv[argIndex], (int *) &intValue) + != TCL_OK) { + goto fmtError; + } + whichValue = INT_VALUE; + size = 1; + break; + case 'e': + case 'E': + case 'f': + case 'g': + case 'G': + if (Tcl_GetDouble(interp, argv[argIndex], &doubleValue) + != TCL_OK) { + goto fmtError; + } + whichValue = DOUBLE_VALUE; + size = 320; + if (precision > 10) { + size += precision; + } + break; + case 0: + interp->result = + "format string ended in middle of field specifier"; + goto fmtError; + default: + sprintf(interp->result, "bad field specifier \"%c\"", *format); + goto fmtError; + } + argIndex++; + format++; + + /* + * Make sure that there's enough space to hold the formatted + * result, then format it. + */ + + doField: + if (width > size) { + size = width; + } + if ((dstSize + size) > dstSpace) { + char *newDst; + int newSpace; + + newSpace = 2*(dstSize + size); + newDst = (char *) ckalloc((unsigned) newSpace+1); + if (dstSize != 0) { + memcpy((VOID *) newDst, (VOID *) dst, (size_t) dstSize); + } + if (dstSpace != TCL_RESULT_SIZE) { + ckfree(dst); + } + dst = newDst; + dstSpace = newSpace; + } + if (noPercent) { + memcpy((VOID *) (dst+dstSize), (VOID *) ptrValue, (size_t) size); + dstSize += size; + dst[dstSize] = 0; + } else { + if (whichValue == DOUBLE_VALUE) { + sprintf(dst+dstSize, newFormat, doubleValue); + } else if (whichValue == INT_VALUE) { + if (useShort) { + sprintf(dst+dstSize, newFormat, (short) intValue); + } else { + sprintf(dst+dstSize, newFormat, intValue); + } + } else { + sprintf(dst+dstSize, newFormat, ptrValue); + } + dstSize += strlen(dst+dstSize); + } + } + + interp->result = dst; + if (dstSpace != TCL_RESULT_SIZE) { + interp->freeProc = TCL_DYNAMIC; + } else { + interp->freeProc = 0; + } + return TCL_OK; + + mixedXPG: + interp->result = "cannot mix \"%\" and \"%n$\" conversion specifiers"; + goto fmtError; + + badIndex: + if (gotXpg) { + interp->result = "\"%n$\" argument index out of range"; + } else { + interp->result = "not enough arguments for all format specifiers"; + } + + fmtError: + if (dstSpace != TCL_RESULT_SIZE) { + ckfree(dst); + } + return TCL_ERROR; +} |