diff options
Diffstat (limited to 'tcl/generic/tclCmdAH.c')
| -rw-r--r-- | tcl/generic/tclCmdAH.c | 1977 |
1 files changed, 1977 insertions, 0 deletions
diff --git a/tcl/generic/tclCmdAH.c b/tcl/generic/tclCmdAH.c new file mode 100644 index 00000000000..4382b508220 --- /dev/null +++ b/tcl/generic/tclCmdAH.c @@ -0,0 +1,1977 @@ +/* + * tclCmdAH.c -- + * + * This file contains the top-level command routines for most of + * the Tcl built-in commands whose names begin with the letters + * A to H. + * + * Copyright (c) 1987-1993 The Regents of the University of California. + * Copyright (c) 1994-1997 Sun Microsystems, Inc. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * RCS: @(#) $Id$ + */ + +#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. + * + * With the bytecode compiler, this procedure is only called when + * a command name is computed at runtime, and is "break" or the name + * to which "break" was renamed: e.g., "set z break; $z" + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_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_CaseObjCmd -- + * + * This procedure is invoked to process the "case" Tcl command. + * See the user documentation for details on what it does. + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_CaseObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + register int i; + int body, result; + char *string, *arg; + int argLen, caseObjc; + Tcl_Obj *CONST *caseObjv; + Tcl_Obj *armPtr; + + if (objc < 3) { + Tcl_WrongNumArgs(interp, 1, objv, + "string ?in? patList body ... ?default body?"); + return TCL_ERROR; + } + + /* + * THIS FAILS IF AN OBJECT'S STRING REP HAS A NULL BYTE. + */ + + string = Tcl_GetStringFromObj(objv[1], &argLen); + body = -1; + + arg = Tcl_GetStringFromObj(objv[2], &argLen); + if (strcmp(arg, "in") == 0) { + i = 3; + } else { + i = 2; + } + caseObjc = objc - i; + caseObjv = objv + i; + + /* + * If all of the pattern/command pairs are lumped into a single + * argument, split them out again. + * THIS FAILS IF THE ARG'S STRING REP CONTAINS A NULL + */ + + if (caseObjc == 1) { + Tcl_Obj **newObjv; + + Tcl_ListObjGetElements(interp, caseObjv[0], &caseObjc, &newObjv); + caseObjv = newObjv; + } + + for (i = 0; i < caseObjc; i += 2) { + int patObjc, j; + char **patObjv; + char *pat; + register char *p; + + if (i == (caseObjc-1)) { + Tcl_ResetResult(interp); + Tcl_AppendToObj(Tcl_GetObjResult(interp), + "extra case pattern with no body", -1); + return TCL_ERROR; + } + + /* + * Check for special case of single pattern (no list) with + * no backslash sequences. + */ + + pat = Tcl_GetStringFromObj(caseObjv[i], &argLen); + for (p = pat; *p != 0; p++) { /* FAILS IF NULL BYTE */ + if (isspace(UCHAR(*p)) || (*p == '\\')) { + break; + } + } + if (*p == 0) { + if ((*pat == 'd') && (strcmp(pat, "default") == 0)) { + body = i+1; + } + if (Tcl_StringMatch(string, pat)) { + body = i+1; + goto match; + } + continue; + } + + + /* + * Break up pattern lists, then check each of the patterns + * in the list. + */ + + result = Tcl_SplitList(interp, pat, &patObjc, &patObjv); + if (result != TCL_OK) { + return result; + } + for (j = 0; j < patObjc; j++) { + if (Tcl_StringMatch(string, patObjv[j])) { + body = i+1; + break; + } + } + ckfree((char *) patObjv); + if (j < patObjc) { + break; + } + } + + match: + if (body != -1) { + armPtr = caseObjv[body-1]; + result = Tcl_EvalObj(interp, caseObjv[body]); + if (result == TCL_ERROR) { + char msg[100]; + + arg = Tcl_GetStringFromObj(armPtr, &argLen); + sprintf(msg, "\n (\"%.*s\" arm line %d)", argLen, arg, + interp->errorLine); + Tcl_AddObjErrorInfo(interp, msg, -1); + } + return result; + } + + /* + * Nothing matched: return nothing. + */ + + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_CatchObjCmd -- + * + * This object-based procedure is invoked to process the "catch" Tcl + * command. See the user documentation for details on what it does. + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_CatchObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + Tcl_Obj *varNamePtr = NULL; + int result; + + if ((objc != 2) && (objc != 3)) { + Tcl_WrongNumArgs(interp, 1, objv, "command ?varName?"); + return TCL_ERROR; + } + + /* + * Save a pointer to the variable name object, if any, in case the + * Tcl_EvalObj reallocates the bytecode interpreter's evaluation + * stack rendering objv invalid. + */ + + if (objc == 3) { + varNamePtr = objv[2]; + } + + result = Tcl_EvalObj(interp, objv[1]); + + if (objc == 3) { + if (Tcl_ObjSetVar2(interp, varNamePtr, NULL, + Tcl_GetObjResult(interp), TCL_PARSE_PART1) == NULL) { + Tcl_ResetResult(interp); + Tcl_AppendToObj(Tcl_GetObjResult(interp), + "couldn't save command result in variable", -1); + return TCL_ERROR; + } + } + + /* + * Set the interpreter's object result to an integer object holding the + * integer Tcl_EvalObj result. Note that we don't bother generating a + * string representation. We reset the interpreter's object result + * to an unshared empty object and then set it to be an integer object. + */ + + Tcl_ResetResult(interp); + Tcl_SetIntObj(Tcl_GetObjResult(interp), result); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_CdObjCmd -- + * + * This procedure is invoked to process the "cd" Tcl command. + * See the user documentation for details on what it does. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_CdObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + char *dirName; + int dirLength; + Tcl_DString buffer; + int result; + + if (objc > 2) { + Tcl_WrongNumArgs(interp, 1, objv, "dirName"); + return TCL_ERROR; + } + + if (objc == 2) { + dirName = Tcl_GetStringFromObj(objv[1], &dirLength); + } else { + dirName = "~"; + } + dirName = Tcl_TranslateFileName(interp, dirName, &buffer); + if (dirName == NULL) { + return TCL_ERROR; + } + result = TclChdir(interp, dirName); + Tcl_DStringFree(&buffer); + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ConcatObjCmd -- + * + * This object-based procedure is invoked to process the "concat" Tcl + * command. See the user documentation for details on what it does/ + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_ConcatObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + if (objc >= 2) { + Tcl_SetObjResult(interp, Tcl_ConcatObj(objc-1, objv+1)); + } + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ContinueCmd - + * + * This procedure is invoked to process the "continue" Tcl command. + * See the user documentation for details on what it does. + * + * With the bytecode compiler, this procedure is only called when + * a command name is computed at runtime, and is "continue" or the name + * to which "continue" was renamed: e.g., "set z continue; $z" + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_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_ErrorObjCmd -- + * + * This procedure is invoked to process the "error" Tcl command. + * See the user documentation for details on what it does. + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_ErrorObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + Interp *iPtr = (Interp *) interp; + register Tcl_Obj *namePtr; + char *info; + int infoLen; + + if ((objc < 2) || (objc > 4)) { + Tcl_WrongNumArgs(interp, 1, objv, "message ?errorInfo? ?errorCode?"); + return TCL_ERROR; + } + + if (objc >= 3) { /* process the optional info argument */ + info = Tcl_GetStringFromObj(objv[2], &infoLen); + if (*info != 0) { + Tcl_AddObjErrorInfo(interp, info, infoLen); + iPtr->flags |= ERR_ALREADY_LOGGED; + } + } + + if (objc == 4) { + namePtr = Tcl_NewStringObj("errorCode", -1); + Tcl_ObjSetVar2(interp, namePtr, (Tcl_Obj *) NULL, objv[3], + TCL_GLOBAL_ONLY); + iPtr->flags |= ERROR_CODE_SET; + Tcl_DecrRefCount(namePtr); /* we're done with name object */ + } + + Tcl_SetObjResult(interp, objv[1]); + return TCL_ERROR; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_EvalObjCmd -- + * + * This object-based procedure is invoked to process the "eval" Tcl + * command. See the user documentation for details on what it does. + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_EvalObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + int result; + register Tcl_Obj *objPtr; + + if (objc < 2) { + Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?"); + return TCL_ERROR; + } + + if (objc == 2) { + result = Tcl_EvalObj(interp, objv[1]); + } else { + /* + * More than one argument: concatenate them together with spaces + * between, then evaluate the result. + */ + + objPtr = Tcl_ConcatObj(objc-1, objv+1); + result = Tcl_EvalObj(interp, objPtr); + Tcl_DecrRefCount(objPtr); /* we're done with the object */ + } + if (result == TCL_ERROR) { + char msg[60]; + sprintf(msg, "\n (\"eval\" body line %d)", interp->errorLine); + Tcl_AddObjErrorInfo(interp, msg, -1); + } + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ExitObjCmd -- + * + * This procedure is invoked to process the "exit" Tcl command. + * See the user documentation for details on what it does. + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_ExitObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + int value; + + if ((objc != 1) && (objc != 2)) { + Tcl_WrongNumArgs(interp, 1, objv, "?returnCode?"); + return TCL_ERROR; + } + + if (objc == 1) { + value = 0; + } else if (Tcl_GetIntFromObj(interp, objv[1], &value) != TCL_OK) { + return TCL_ERROR; + } + Tcl_Exit(value); + /*NOTREACHED*/ + return TCL_OK; /* Better not ever reach this! */ +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ExprObjCmd -- + * + * This object-based procedure is invoked to process the "expr" Tcl + * command. See the user documentation for details on what it does. + * + * With the bytecode compiler, this procedure is called in two + * circumstances: 1) to execute expr commands that are too complicated + * or too unsafe to try compiling directly into an inline sequence of + * instructions, and 2) to execute commands where the command name is + * computed at runtime and is "expr" or the name to which "expr" was + * renamed (e.g., "set z expr; $z 2+3") + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_ExprObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + register Tcl_Obj *objPtr; + Tcl_Obj *resultPtr; + register char *bytes; + int length, i, result; + + if (objc < 2) { + Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?"); + return TCL_ERROR; + } + + if (objc == 2) { + result = Tcl_ExprObj(interp, objv[1], &resultPtr); + if (result == TCL_OK) { + Tcl_SetObjResult(interp, resultPtr); + Tcl_DecrRefCount(resultPtr); /* done with the result object */ + } + return result; + } + + /* + * Create a new object holding the concatenated argument strings. + * THIS FAILS IF AN OBJECT'S STRING REP HAS A NULL BYTE. + */ + + bytes = Tcl_GetStringFromObj(objv[1], &length); + objPtr = Tcl_NewStringObj(bytes, length); + Tcl_IncrRefCount(objPtr); + for (i = 2; i < objc; i++) { + Tcl_AppendToObj(objPtr, " ", 1); + bytes = Tcl_GetStringFromObj(objv[i], &length); + Tcl_AppendToObj(objPtr, bytes, length); + } + + /* + * Evaluate the concatenated string object. + */ + + result = Tcl_ExprObj(interp, objPtr, &resultPtr); + if (result == TCL_OK) { + Tcl_SetObjResult(interp, resultPtr); + Tcl_DecrRefCount(resultPtr); /* done with the result object */ + } + + /* + * Free allocated resources. + */ + + Tcl_DecrRefCount(objPtr); + return result; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_FileObjCmd -- + * + * This procedure is invoked to process the "file" Tcl command. + * See the user documentation for details on what it does. + * PLEASE NOTE THAT THIS FAILS WITH FILENAMES AND PATHS WITH + * EMBEDDED NULLS, WHICH COULD THEORETICALLY HAPPEN ON A MAC. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_FileObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + char *fileName, *extension, *errorString; + int statOp = 0; /* Init. to avoid compiler warning. */ + int length; + int mode = 0; /* Initialized only to prevent + * compiler warning message. */ + struct stat statBuf; + Tcl_DString buffer; + Tcl_Obj *resultPtr; + int index, result; + +/* + * This list of constants should match the fileOption string array below. + */ + +enum {FILE_ATIME, FILE_ATTRIBUTES, FILE_COPY, FILE_DELETE, FILE_DIRNAME, + FILE_EXECUTABLE, FILE_EXISTS, FILE_EXTENSION, FILE_ISDIRECTORY, + FILE_ISFILE, FILE_JOIN, FILE_LSTAT, FILE_MTIME, FILE_MKDIR, + FILE_NATIVENAME, FILE_OWNED, FILE_PATHTYPE, FILE_READABLE, + FILE_READLINK, FILE_RENAME, FILE_ROOTNAME, FILE_SIZE, FILE_SPLIT, + FILE_STAT, FILE_TAIL, FILE_TYPE, FILE_VOLUMES, FILE_WRITABLE}; + + + static char *fileOptions[] = {"atime", "attributes", "copy", "delete", + "dirname", "executable", "exists", "extension", "isdirectory", + "isfile", "join", "lstat", "mtime", "mkdir", "nativename", + "owned", "pathtype", "readable", "readlink", "rename", + "rootname", "size", "split", "stat", "tail", "type", "volumes", + "writable", (char *) NULL}; + + if (objc < 2) { + Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?"); + return TCL_ERROR; + } + + if (Tcl_GetIndexFromObj(interp, objv[1], fileOptions, "option", 0, &index) + != TCL_OK) { + return TCL_ERROR; + } + + result = TCL_OK; + /* + * First, do the volumes command, since it is the only one that + * has objc == 2. + */ + + if ( index == FILE_VOLUMES) { + if ( objc != 2 ) { + Tcl_WrongNumArgs(interp, 1, objv, "volumes"); + return TCL_ERROR; + } + result = TclpListVolumes(interp); + return result; + } + + if (objc < 3) { + Tcl_WrongNumArgs(interp, 2, objv, "name ?arg ...?"); + return TCL_ERROR; + } + + Tcl_DStringInit(&buffer); + resultPtr = Tcl_GetObjResult(interp); + + + /* + * Handle operations on the file name. + */ + + switch (index) { + case FILE_ATTRIBUTES: + result = TclFileAttrsCmd(interp, objc - 2, objv + 2); + goto done; + case FILE_DIRNAME: { + int pargc; + char **pargv; + + if (objc != 3) { + errorString = "dirname name"; + goto not3Args; + } + + fileName = Tcl_GetStringFromObj(objv[2], &length); + + /* + * 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_SetStringObj(resultPtr, Tcl_DStringValue(&buffer), + buffer.length); + } else if ((pargc == 0) + || (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) { + Tcl_SetStringObj(resultPtr, (tclPlatform == TCL_PLATFORM_MAC) + ? ":" : ".", 1); + } else { + Tcl_SetStringObj(resultPtr, pargv[0], -1); } + ckfree((char *)pargv); + goto done; + } + case FILE_TAIL: { + int pargc; + char **pargv; + + if (objc != 3) { + errorString = "tail name"; + goto not3Args; + } + + fileName = Tcl_GetStringFromObj(objv[2], &length); + + /* + * 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 the last component, unless it is the only component, + * and it is the root of an absolute path. + */ + + if (pargc > 0) { + if ((pargc > 1) + || (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) { + Tcl_SetStringObj(resultPtr, pargv[pargc - 1], -1); + } + } + ckfree((char *)pargv); + goto done; + } + case FILE_ROOTNAME: { + char *fileName; + + if (objc != 3) { + errorString = "rootname name"; + goto not3Args; + } + + fileName = Tcl_GetStringFromObj(objv[2], &length); + extension = TclGetExtension(fileName); + if (extension == NULL) { + Tcl_SetObjResult(interp, objv[2]); + } else { + Tcl_SetStringObj(resultPtr, fileName, + (int) (length - strlen(extension))); + } + goto done; + } + case FILE_EXTENSION: + if (objc != 3) { + errorString = "extension name"; + goto not3Args; + } + extension = TclGetExtension(Tcl_GetStringFromObj(objv[2],&length)); + + if (extension != NULL) { + Tcl_SetStringObj(resultPtr, extension, (int)strlen(extension)); + } + goto done; + case FILE_PATHTYPE: + if (objc != 3) { + errorString = "pathtype name"; + goto not3Args; + } + switch (Tcl_GetPathType(Tcl_GetStringFromObj(objv[2], &length))) { + case TCL_PATH_ABSOLUTE: + Tcl_SetStringObj(resultPtr, "absolute", -1); + break; + case TCL_PATH_RELATIVE: + Tcl_SetStringObj(resultPtr, "relative", -1); + break; + case TCL_PATH_VOLUME_RELATIVE: + Tcl_SetStringObj(resultPtr, "volumerelative", -1); + break; + } + goto done; + case FILE_SPLIT: { + int pargc, i; + char **pargvList; + Tcl_Obj *listObjPtr; + + if (objc != 3) { + errorString = "split name"; + goto not3Args; + } + + Tcl_SplitPath(Tcl_GetStringFromObj(objv[2], &length), &pargc, + &pargvList); + listObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); + for (i = 0; i < pargc; i++) { + Tcl_ListObjAppendElement(interp, listObjPtr, + Tcl_NewStringObj(pargvList[i], -1)); + } + ckfree((char *) pargvList); + Tcl_SetObjResult(interp, listObjPtr); + goto done; + } + case FILE_JOIN: { + char **pargv = (char **) ckalloc((objc - 2) * sizeof(char *)); + int i; + + for (i = 2; i < objc; i++) { + pargv[i - 2] = Tcl_GetStringFromObj(objv[i], &length); + } + Tcl_JoinPath(objc - 2, pargv, &buffer); + Tcl_SetStringObj(resultPtr, Tcl_DStringValue(&buffer), + buffer.length); + ckfree((char *) pargv); + Tcl_DStringFree(&buffer); + goto done; + } + case FILE_RENAME: { + char **pargv = (char **) ckalloc(objc * sizeof(char *)); + int i; + + for (i = 0; i < objc; i++) { + pargv[i] = Tcl_GetStringFromObj(objv[i], &length); + } + result = TclFileRenameCmd(interp, objc, pargv); + ckfree((char *) pargv); + goto done; + } + case FILE_MKDIR: { + char **pargv = (char **) ckalloc(objc * sizeof(char *)); + int i; + + for (i = 0; i < objc; i++) { + pargv[i] = Tcl_GetStringFromObj(objv[i], &length); + } + result = TclFileMakeDirsCmd(interp, objc, pargv); + ckfree((char *) pargv); + goto done; + } + case FILE_DELETE: { + char **pargv = (char **) ckalloc(objc * sizeof(char *)); + int i; + + for (i = 0; i < objc; i++) { + pargv[i] = Tcl_GetStringFromObj(objv[i], &length); + } + result = TclFileDeleteCmd(interp, objc, pargv); + ckfree((char *) pargv); + goto done; + } + case FILE_COPY: { + char **pargv = (char **) ckalloc(objc * sizeof(char *)); + int i; + + for (i = 0; i < objc; i++) { + pargv[i] = Tcl_GetStringFromObj(objv[i], &length); + } + result = TclFileCopyCmd(interp, objc, pargv); + ckfree((char *) pargv); + goto done; + } + case FILE_NATIVENAME: + fileName = Tcl_TranslateFileName(interp, + Tcl_GetStringFromObj(objv[2], &length), &buffer); + if (fileName == NULL) { + result = TCL_ERROR ; + } else { + Tcl_SetStringObj(resultPtr, fileName, -1); + } + goto done; + } + + /* + * Next, handle operations that can be satisfied with the "access" + * kernel call. + */ + + fileName = Tcl_TranslateFileName(interp, + Tcl_GetStringFromObj(objv[2], &length), &buffer); + + switch (index) { + case FILE_READABLE: + if (objc != 3) { + errorString = "readable name"; + goto not3Args; + } + mode = R_OK; +checkAccess: + /* + * The result might have been set within Tcl_TranslateFileName + * (like no such user "blah" for file exists ~blah) + * but we don't want to flag an error in that case. + */ + if (fileName == NULL) { + Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0)); + } else { + Tcl_SetBooleanObj(resultPtr, (TclAccess(fileName, mode) != -1)); + } + goto done; + case FILE_WRITABLE: + if (objc != 3) { + errorString = "writable name"; + goto not3Args; + } + mode = W_OK; + goto checkAccess; + case FILE_EXECUTABLE: + if (objc != 3) { + errorString = "executable name"; + goto not3Args; + } + mode = X_OK; + goto checkAccess; + case FILE_EXISTS: + if (objc != 3) { + errorString = "exists name"; + goto not3Args; + } + mode = F_OK; + goto checkAccess; + } + + + /* + * Lastly, check stuff that requires the file to be stat-ed. + */ + + if (fileName == NULL) { + result = TCL_ERROR; + goto done; + } + + switch (index) { + case FILE_ATIME: + if (objc != 3) { + errorString = "atime name"; + goto not3Args; + } + + if (TclStat(fileName, &statBuf) == -1) { + goto badStat; + } + Tcl_SetLongObj(resultPtr, (long) statBuf.st_atime); + goto done; + case FILE_ISDIRECTORY: + if (objc != 3) { + errorString = "isdirectory name"; + goto not3Args; + } + statOp = 2; + break; + case FILE_ISFILE: + if (objc != 3) { + errorString = "isfile name"; + goto not3Args; + } + statOp = 1; + break; + case FILE_LSTAT: + if (objc != 4) { + Tcl_WrongNumArgs(interp, 1, objv, "lstat name varName"); + result = TCL_ERROR; + goto done; + } + + if (lstat(fileName, &statBuf) == -1) { + Tcl_AppendStringsToObj(resultPtr, "couldn't lstat \"", + Tcl_GetStringFromObj(objv[2], &length), "\": ", + Tcl_PosixError(interp), (char *) NULL); + result = TCL_ERROR; + goto done; + } + result = StoreStatData(interp, Tcl_GetStringFromObj(objv[3], + &length), &statBuf); + goto done; + case FILE_MTIME: + if (objc != 3) { + errorString = "mtime name"; + goto not3Args; + } + if (TclStat(fileName, &statBuf) == -1) { + goto badStat; + } + Tcl_SetLongObj(resultPtr, (long) statBuf.st_mtime); + goto done; + case FILE_OWNED: + if (objc != 3) { + errorString = "owned name"; + goto not3Args; + } + statOp = 0; + break; + case FILE_READLINK: { + char linkValue[MAXPATHLEN + 1]; + int linkLength; + + if (objc != 3) { + errorString = "readlink name"; + 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_AppendStringsToObj(resultPtr, "couldn't readlink \"", + Tcl_GetStringFromObj(objv[2], &length), "\": ", + Tcl_PosixError(interp), (char *) NULL); + result = TCL_ERROR; + goto done; + } + linkValue[linkLength] = 0; + Tcl_SetStringObj(resultPtr, linkValue, linkLength); + goto done; + } + case FILE_SIZE: + if (objc != 3) { + errorString = "size name"; + goto not3Args; + } + if (TclStat(fileName, &statBuf) == -1) { + goto badStat; + } + Tcl_SetLongObj(resultPtr, (long) statBuf.st_size); + goto done; + case FILE_STAT: + if (objc != 4) { + Tcl_WrongNumArgs(interp, 1, objv, "stat name varName"); + result = TCL_ERROR; + goto done; + } + + if (TclStat(fileName, &statBuf) == -1) { +badStat: + Tcl_AppendStringsToObj(resultPtr, "couldn't stat \"", + Tcl_GetStringFromObj(objv[2], &length), + "\": ", Tcl_PosixError(interp), (char *) NULL); + result = TCL_ERROR; + goto done; + } + result = StoreStatData(interp, Tcl_GetStringFromObj(objv[3], + &length), &statBuf); + goto done; + case FILE_TYPE: + if (objc != 3) { + errorString = "type name"; + goto not3Args; + } + if (lstat(fileName, &statBuf) == -1) { + goto badStat; + } + errorString = GetTypeFromMode((int) statBuf.st_mode); + Tcl_SetStringObj(resultPtr, errorString, -1); + goto done; + } + + if (TclStat(fileName, &statBuf) == -1) { + Tcl_SetBooleanObj(resultPtr, 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; + } + Tcl_SetBooleanObj(resultPtr, mode); + +done: + Tcl_DStringFree(&buffer); + return result; + +not3Args: + Tcl_WrongNumArgs(interp, 1, objv, errorString); + 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"; +#ifdef S_ISLNK + } else if (S_ISLNK(mode)) { + return "link"; +#endif +#ifdef S_ISSOCK + } else if (S_ISSOCK(mode)) { + return "socket"; +#endif + } + return "unknown"; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_ForCmd -- + * + * This procedure is invoked to process the "for" Tcl command. + * See the user documentation for details on what it does. + * + * With the bytecode compiler, this procedure is only called when + * a command name is computed at runtime, and is "for" or the name + * to which "for" was renamed: e.g., + * "set z for; $z {set i 0} {$i<100} {incr i} {puts $i}" + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* 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_ForeachObjCmd -- + * + * This object-based procedure is invoked to process the "foreach" Tcl + * command. See the user documentation for details on what it does. + * + * Results: + * A standard Tcl object result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_ForeachObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + 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 */ + Tcl_Obj *bodyPtr; + + /* + * We copy the argument object pointers into a local array to avoid + * the problem that "objv" might become invalid. It is a pointer into + * the evaluation stack and that stack might be grown and reallocated + * if the loop body requires a large amount of stack space. + */ + +#define NUM_ARGS 9 + Tcl_Obj *(argObjStorage[NUM_ARGS]); + Tcl_Obj **argObjv = argObjStorage; + +#define STATIC_LIST_SIZE 4 + int indexArray[STATIC_LIST_SIZE]; /* Array of value list indices */ + int varcListArray[STATIC_LIST_SIZE]; /* # loop variables per list */ + Tcl_Obj **varvListArray[STATIC_LIST_SIZE]; /* Array of var name lists */ + int argcListArray[STATIC_LIST_SIZE]; /* Array of value list sizes */ + Tcl_Obj **argvListArray[STATIC_LIST_SIZE]; /* Array of value lists */ + + int *index = indexArray; + int *varcList = varcListArray; + Tcl_Obj ***varvList = varvListArray; + int *argcList = argcListArray; + Tcl_Obj ***argvList = argvListArray; + + if (objc < 4 || (objc%2 != 0)) { + Tcl_WrongNumArgs(interp, 1, objv, + "varList list ?varList list ...? command"); + return TCL_ERROR; + } + + /* + * Create the object argument array "argObjv". Make sure argObjv is + * large enough to hold the objc arguments. + */ + + if (objc > NUM_ARGS) { + argObjv = (Tcl_Obj **) ckalloc(objc * sizeof(Tcl_Obj *)); + } + for (i = 0; i < objc; i++) { + argObjv[i] = objv[i]; + } + + /* + * 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 = (objc-2)/2; + if (numLists > STATIC_LIST_SIZE) { + index = (int *) ckalloc(numLists * sizeof(int)); + varcList = (int *) ckalloc(numLists * sizeof(int)); + varvList = (Tcl_Obj ***) ckalloc(numLists * sizeof(Tcl_Obj **)); + argcList = (int *) ckalloc(numLists * sizeof(int)); + argvList = (Tcl_Obj ***) ckalloc(numLists * sizeof(Tcl_Obj **)); + } + for (i = 0; i < numLists; i++) { + index[i] = 0; + varcList[i] = 0; + varvList[i] = (Tcl_Obj **) NULL; + argcList[i] = 0; + argvList[i] = (Tcl_Obj **) NULL; + } + + /* + * Break up the value lists and variable lists into elements + * THIS FAILS IF THE OBJECT'S STRING REP HAS A NULL BYTE. + */ + + maxj = 0; + for (i = 0; i < numLists; i++) { + result = Tcl_ListObjGetElements(interp, argObjv[1+i*2], + &varcList[i], &varvList[i]); + if (result != TCL_OK) { + goto done; + } + if (varcList[i] < 1) { + Tcl_AppendToObj(Tcl_GetObjResult(interp), + "foreach varlist is empty", -1); + result = TCL_ERROR; + goto done; + } + + result = Tcl_ListObjGetElements(interp, argObjv[2+i*2], + &argcList[i], &argvList[i]); + if (result != TCL_OK) { + goto done; + } + + 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 "" + */ + + bodyPtr = argObjv[objc-1]; + for (j = 0; j < maxj; j++) { + for (i = 0; i < numLists; i++) { + /* + * If a variable or value list object has been converted to + * another kind of Tcl object, convert it back to a list object + * and refetch the pointer to its element array. + */ + + if (argObjv[1+i*2]->typePtr != &tclListType) { + result = Tcl_ListObjGetElements(interp, argObjv[1+i*2], + &varcList[i], &varvList[i]); + if (result != TCL_OK) { + panic("Tcl_ForeachObjCmd: could not reconvert variable list %d to a list object\n", i); + } + } + if (argObjv[2+i*2]->typePtr != &tclListType) { + result = Tcl_ListObjGetElements(interp, argObjv[2+i*2], + &argcList[i], &argvList[i]); + if (result != TCL_OK) { + panic("Tcl_ForeachObjCmd: could not reconvert value list %d to a list object\n", i); + } + } + + for (v = 0; v < varcList[i]; v++) { + int k = index[i]++; + Tcl_Obj *valuePtr, *varValuePtr; + int isEmptyObj = 0; + + if (k < argcList[i]) { + valuePtr = argvList[i][k]; + } else { + valuePtr = Tcl_NewObj(); /* empty string */ + isEmptyObj = 1; + } + varValuePtr = Tcl_ObjSetVar2(interp, varvList[i][v], NULL, + valuePtr, TCL_PARSE_PART1); + if (varValuePtr == NULL) { + if (isEmptyObj) { + Tcl_DecrRefCount(valuePtr); + } + Tcl_ResetResult(interp); + Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), + "couldn't set loop variable: \"", + Tcl_GetStringFromObj(varvList[i][v], (int *) NULL), + "\"", (char *) NULL); + result = TCL_ERROR; + goto done; + } + + } + } + + result = Tcl_EvalObj(interp, bodyPtr); + 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_AddObjErrorInfo(interp, msg, -1); + break; + } else { + break; + } + } + } + if (result == TCL_OK) { + Tcl_ResetResult(interp); + } + + done: + if (numLists > STATIC_LIST_SIZE) { + ckfree((char *) index); + ckfree((char *) varcList); + ckfree((char *) argcList); + ckfree((char *) varvList); + ckfree((char *) argvList); + } + if (argObjv != argObjStorage) { + ckfree((char *) argObjv); + } + return result; +#undef STATIC_LIST_SIZE +#undef NUM_ARGS +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_FormatObjCmd -- + * + * This procedure is invoked to process the "format" Tcl command. + * See the user documentation for details on what it does. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +int +Tcl_FormatObjCmd(dummy, interp, objc, objv) + ClientData dummy; /* Not used. */ + Tcl_Interp *interp; /* Current interpreter. */ + int objc; /* Number of arguments. */ + Tcl_Obj *CONST objv[]; /* Argument objects. */ +{ + register char *format; /* Used to read characters from the format + * string. */ + int formatLen; /* The length of the format string */ + char *endPtr; /* Points to the last char in format array */ + 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 +# define MAX_FLOAT_SIZE 320 + + Tcl_Obj *resultPtr; /* Where result is stored finally. */ + char staticBuf[MAX_FLOAT_SIZE + 1]; + /* A static buffer to copy the format results + * into */ + char *dst = staticBuf; /* The buffer that sprintf writes into each + * time the format processes a specifier */ + int dstSize = MAX_FLOAT_SIZE; + /* The size of the dst buffer */ + int noPercent; /* Special case for speed: indicates there's + * no field specifier, just a string to copy.*/ + int objIndex; /* 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 objv 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 (objc < 2) { + Tcl_WrongNumArgs(interp, 1, objv, + "formatString ?arg arg ...?"); + return TCL_ERROR; + } + + format = Tcl_GetStringFromObj(objv[1], &formatLen); + endPtr = format + formatLen; + resultPtr = Tcl_NewObj(); + objIndex = 2; + + while (format < endPtr) { + register char *newPtr = newFormat; + + width = precision = noPercent = useShort = 0; + whichValue = PTR_VALUE; + + /* + * Get rid of any characters before the next field specifier. + */ + if (*format != '%') { + ptrValue = format; + while ((*format != '%') && (format < endPtr)) { + format++; + } + size = format - 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; + } + objIndex = tmp+1; + if ((objIndex < 2) || (objIndex >= objc)) { + 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 (objIndex >= objc) { + goto badIndex; + } + if (Tcl_GetIntFromObj(interp, objv[objIndex], + &width) != TCL_OK) { + goto fmtError; + } + objIndex++; + format++; + } + if (width > 100000) { + /* + * Don't allow arbitrarily large widths: could cause core + * dump when we try to allocate a zillion bytes of memory + * below. + */ + + width = 100000; + } else if (width < 0) { + width = 0; + } + if (width != 0) { + TclFormatInt(newPtr, 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 (objIndex >= objc) { + goto badIndex; + } + if (Tcl_GetIntFromObj(interp, objv[objIndex], + &precision) != TCL_OK) { + goto fmtError; + } + objIndex++; + format++; + } + if (precision != 0) { + TclFormatInt(newPtr, 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 (objIndex >= objc) { + goto badIndex; + } + switch (*format) { + case 'i': + newPtr[-1] = 'd'; + case 'd': + case 'o': + case 'u': + case 'x': + case 'X': + if (Tcl_GetIntFromObj(interp, objv[objIndex], + (int *) &intValue) != TCL_OK) { + goto fmtError; + } + whichValue = INT_VALUE; + size = 40 + precision; + break; + case 's': + ptrValue = Tcl_GetStringFromObj(objv[objIndex], &size); + break; + case 'c': + if (Tcl_GetIntFromObj(interp, objv[objIndex], + (int *) &intValue) != TCL_OK) { + goto fmtError; + } + whichValue = INT_VALUE; + size = 1; + break; + case 'e': + case 'E': + case 'f': + case 'g': + case 'G': + if (Tcl_GetDoubleFromObj(interp, objv[objIndex], + &doubleValue) != TCL_OK) { + goto fmtError; + } + whichValue = DOUBLE_VALUE; + size = MAX_FLOAT_SIZE; + if (precision > 10) { + size += precision; + } + break; + case 0: + Tcl_SetResult(interp, + "format string ended in middle of field specifier", + TCL_STATIC); + goto fmtError; + default: + { + char buf[40]; + sprintf(buf, "bad field specifier \"%c\"", *format); + Tcl_SetResult(interp, buf, TCL_VOLATILE); + goto fmtError; + } + } + objIndex++; + format++; + + /* + * Make sure that there's enough space to hold the formatted + * result, then format it. + */ + + doField: + if (width > size) { + size = width; + } + if (noPercent) { + Tcl_AppendToObj(resultPtr, ptrValue, size); + } else { + if (size > dstSize) { + if (dst != staticBuf) { + ckfree(dst); + } + dst = (char *) ckalloc((unsigned) (size + 1)); + dstSize = size; + } + + if (whichValue == DOUBLE_VALUE) { + sprintf(dst, newFormat, doubleValue); + } else if (whichValue == INT_VALUE) { + if (useShort) { + sprintf(dst, newFormat, (short) intValue); + } else { + sprintf(dst, newFormat, intValue); + } + } else { + sprintf(dst, newFormat, ptrValue); + } + Tcl_AppendToObj(resultPtr, dst, -1); + } + } + + Tcl_SetObjResult(interp, resultPtr); + if(dst != staticBuf) { + ckfree(dst); + } + return TCL_OK; + + mixedXPG: + Tcl_SetResult(interp, + "cannot mix \"%\" and \"%n$\" conversion specifiers", TCL_STATIC); + goto fmtError; + + badIndex: + if (gotXpg) { + Tcl_SetResult(interp, + "\"%n$\" argument index out of range", TCL_STATIC); + } else { + Tcl_SetResult(interp, + "not enough arguments for all format specifiers", TCL_STATIC); + } + + fmtError: + if(dst != staticBuf) { + ckfree(dst); + } + Tcl_DecrRefCount(resultPtr); + return TCL_ERROR; +} |