tclCmdMZ.c Go to the documentation of this file. /* * tclCmdMZ.c -- * * This file contains the top-level command routines for most of the Tcl * built-in commands whose names begin with the letters M to Z. It * contains only commands in the generic core (i.e. those that don't * depend much upon UNIX facilities). * * Copyright (c) 1987-1993 The Regents of the University of California. * Copyright (c) 1994-1997 Sun Microsystems, Inc. * Copyright (c) 1998-2000 Scriptics Corporation. * Copyright (c) 2002 ActiveState Corporation. * Copyright (c) 2003 Donal K. Fellows. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tclCmdMZ.c,v 1.163 2007/12/13 15:23:15 dgp Exp $ */ #include "tclInt.h" #include "tclRegexp.h" static int UniCharIsAscii(int character);  /* *---------------------------------------------------------------------- * * Tcl_PwdObjCmd -- * * 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. * *---------------------------------------------------------------------- */ int Tcl_PwdObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { Tcl_Obj *retVal; if (objc != 1) { Tcl_WrongNumArgs(interp, 1, objv, NULL); return TCL_ERROR; } retVal = Tcl_FSGetCwd(interp); if (retVal == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, retVal); Tcl_DecrRefCount(retVal); return TCL_OK; }  /* *---------------------------------------------------------------------- * * Tcl_RegexpObjCmd -- * * This procedure is invoked to process the "regexp" Tcl command. See * the user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_RegexpObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { int i, indices, match, about, offset, all, doinline, numMatchesSaved; int cflags, eflags, stringLength; Tcl_RegExp regExpr; Tcl_Obj *objPtr, *startIndex = NULL, *resultPtr = NULL; Tcl_RegExpInfo info; static CONST char *options[] = { "-all", "-about", "-indices", "-inline", "-expanded", "-line", "-linestop", "-lineanchor", "-nocase", "-start", "--", NULL }; enum options { REGEXP_ALL, REGEXP_ABOUT, REGEXP_INDICES, REGEXP_INLINE, REGEXP_EXPANDED,REGEXP_LINE, REGEXP_LINESTOP,REGEXP_LINEANCHOR, REGEXP_NOCASE, REGEXP_START, REGEXP_LAST }; indices = 0; about = 0; cflags = TCL_REG_ADVANCED; eflags = 0; offset = 0; all = 0; doinline = 0; for (i = 1; i < objc; i++) { char *name; int index; name = TclGetString(objv[i]); if (name[0] != '-') { break; } if (Tcl_GetIndexFromObj(interp, objv[i], options, "switch", TCL_EXACT, &index) != TCL_OK) { goto optionError; } switch ((enum options) index) { case REGEXP_ALL: all = 1; break; case REGEXP_INDICES: indices = 1; break; case REGEXP_INLINE: doinline = 1; break; case REGEXP_NOCASE: cflags |= TCL_REG_NOCASE; break; case REGEXP_ABOUT: about = 1; break; case REGEXP_EXPANDED: cflags |= TCL_REG_EXPANDED; break; case REGEXP_LINE: cflags |= TCL_REG_NEWLINE; break; case REGEXP_LINESTOP: cflags |= TCL_REG_NLSTOP; break; case REGEXP_LINEANCHOR: cflags |= TCL_REG_NLANCH; break; case REGEXP_START: { int temp; if (++i >= objc) { goto endOfForLoop; } if (TclGetIntForIndexM(interp, objv[i], 0, &temp) != TCL_OK) { goto optionError; } if (startIndex) { Tcl_DecrRefCount(startIndex); } startIndex = objv[i]; Tcl_IncrRefCount(startIndex); break; } case REGEXP_LAST: i++; goto endOfForLoop; } } endOfForLoop: if ((objc - i) < (2 - about)) { Tcl_WrongNumArgs(interp, 1, objv, "?switches? exp string ?matchVar? ?subMatchVar subMatchVar ...?"); goto optionError; } objc -= i; objv += i; /* * Check if the user requested -inline, but specified match variables; a * no-no. */ if (doinline && ((objc - 2) != 0)) { Tcl_AppendResult(interp, "regexp match variables not allowed" " when using -inline", NULL); goto optionError; } /* * Handle the odd about case separately. */ if (about) { regExpr = Tcl_GetRegExpFromObj(interp, objv[0], cflags); if ((regExpr == NULL) || (TclRegAbout(interp, regExpr) < 0)) { optionError: if (startIndex) { Tcl_DecrRefCount(startIndex); } return TCL_ERROR; } return TCL_OK; } /* * Get the length of the string that we are matching against so we can do * the termination test for -all matches. Do this before getting the * regexp to avoid shimmering problems. */ objPtr = objv[1]; stringLength = Tcl_GetCharLength(objPtr); if (startIndex) { TclGetIntForIndexM(NULL, startIndex, stringLength, &offset); Tcl_DecrRefCount(startIndex); if (offset < 0) { offset = 0; } } regExpr = Tcl_GetRegExpFromObj(interp, objv[0], cflags); if (regExpr == NULL) { return TCL_ERROR; } if (offset > 0) { /* * Add flag if using offset (string is part of a larger string), so * that "^" won't match. */ eflags |= TCL_REG_NOTBOL; } objc -= 2; objv += 2; if (doinline) { /* * Save all the subexpressions, as we will return them as a list */ numMatchesSaved = -1; } else { /* * Save only enough subexpressions for matches we want to keep, expect * in the case of -all, where we need to keep at least one to know * where to move the offset. */ numMatchesSaved = (objc == 0) ? all : objc; } /* * The following loop is to handle multiple matches within the same source * string; each iteration handles one match. If "-all" hasn't been * specified then the loop body only gets executed once. We terminate the * loop when the starting offset is past the end of the string. */ while (1) { match = Tcl_RegExpExecObj(interp, regExpr, objPtr, offset /* offset */, numMatchesSaved, eflags | ((offset > 0 && (Tcl_GetUniChar(objPtr,offset-1) != (Tcl_UniChar)'\n')) ? TCL_REG_NOTBOL : 0)); if (match < 0) { return TCL_ERROR; } if (match == 0) { /* * We want to set the value of the intepreter result only when * this is the first time through the loop. */ if (all <= 1) { /* * If inlining, the interpreter's object result remains an * empty list, otherwise set it to an integer object w/ value * 0. */ if (!doinline) { Tcl_SetObjResult(interp, Tcl_NewIntObj(0)); } return TCL_OK; } break; } /* * If additional variable names have been specified, return index * information in those variables. */ Tcl_RegExpGetInfo(regExpr, &info); if (doinline) { /* * It's the number of substitutions, plus one for the matchVar at * index 0 */ objc = info.nsubs + 1; if (all <= 1) { resultPtr = Tcl_NewObj(); } } for (i = 0; i < objc; i++) { Tcl_Obj *newPtr; if (indices) { int start, end; Tcl_Obj *objs[2]; /* * Only adjust the match area if there was a match for that * area. (Scriptics Bug 4391/SF Bug #219232) */ if (i <= info.nsubs && info.matches[i].start >= 0) { start = offset + info.matches[i].start; end = offset + info.matches[i].end; /* * Adjust index so it refers to the last character in the * match instead of the first character after the match. */ if (end >= offset) { end--; } } else { start = -1; end = -1; } objs[0] = Tcl_NewLongObj(start); objs[1] = Tcl_NewLongObj(end); newPtr = Tcl_NewListObj(2, objs); } else { if (i <= info.nsubs) { newPtr = Tcl_GetRange(objPtr, offset + info.matches[i].start, offset + info.matches[i].end - 1); } else { newPtr = Tcl_NewObj(); } } if (doinline) { if (Tcl_ListObjAppendElement(interp, resultPtr, newPtr) != TCL_OK) { Tcl_DecrRefCount(newPtr); Tcl_DecrRefCount(resultPtr); return TCL_ERROR; } } else { Tcl_Obj *valuePtr; valuePtr = Tcl_ObjSetVar2(interp, objv[i], NULL, newPtr, 0); if (valuePtr == NULL) { Tcl_AppendResult(interp, "couldn't set variable \"", TclGetString(objv[i]), "\"", NULL); return TCL_ERROR; } } } if (all == 0) { break; } /* * Adjust the offset to the character just after the last one in the * matchVar and increment all to count how many times we are making a * match. We always increment the offset by at least one to prevent * endless looping (as in the case: regexp -all {a*} a). Otherwise, * when we match the NULL string at the end of the input string, we * will loop indefinately (because the length of the match is 0, so * offset never changes). */ if (info.matches[0].end == 0) { offset++; } offset += info.matches[0].end; all++; eflags |= TCL_REG_NOTBOL; if (offset >= stringLength) { break; } } /* * Set the interpreter's object result to an integer object with value 1 * if -all wasn't specified, otherwise it's all-1 (the number of times * through the while - 1). */ if (doinline) { Tcl_SetObjResult(interp, resultPtr); } else { Tcl_SetObjResult(interp, Tcl_NewIntObj(all ? all-1 : 1)); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * Tcl_RegsubObjCmd -- * * This procedure is invoked to process the "regsub" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_RegsubObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { int idx, result, cflags, all, wlen, wsublen, numMatches, offset; int start, end, subStart, subEnd, match; Tcl_RegExp regExpr; Tcl_RegExpInfo info; Tcl_Obj *resultPtr, *subPtr, *objPtr, *startIndex = NULL; Tcl_UniChar ch, *wsrc, *wfirstChar, *wstring, *wsubspec, *wend; static CONST char *options[] = { "-all", "-nocase", "-expanded", "-line", "-linestop", "-lineanchor", "-start", "--", NULL }; enum options { REGSUB_ALL, REGSUB_NOCASE, REGSUB_EXPANDED, REGSUB_LINE, REGSUB_LINESTOP, REGSUB_LINEANCHOR, REGSUB_START, REGSUB_LAST }; cflags = TCL_REG_ADVANCED; all = 0; offset = 0; resultPtr = NULL; for (idx = 1; idx < objc; idx++) { char *name; int index; name = TclGetString(objv[idx]); if (name[0] != '-') { break; } if (Tcl_GetIndexFromObj(interp, objv[idx], options, "switch", TCL_EXACT, &index) != TCL_OK) { goto optionError; } switch ((enum options) index) { case REGSUB_ALL: all = 1; break; case REGSUB_NOCASE: cflags |= TCL_REG_NOCASE; break; case REGSUB_EXPANDED: cflags |= TCL_REG_EXPANDED; break; case REGSUB_LINE: cflags |= TCL_REG_NEWLINE; break; case REGSUB_LINESTOP: cflags |= TCL_REG_NLSTOP; break; case REGSUB_LINEANCHOR: cflags |= TCL_REG_NLANCH; break; case REGSUB_START: { int temp; if (++idx >= objc) { goto endOfForLoop; } if (TclGetIntForIndexM(interp, objv[idx], 0, &temp) != TCL_OK) { goto optionError; } if (startIndex) { Tcl_DecrRefCount(startIndex); } startIndex = objv[idx]; Tcl_IncrRefCount(startIndex); break; } case REGSUB_LAST: idx++; goto endOfForLoop; } } endOfForLoop: if (objc-idx < 3 || objc-idx > 4) { Tcl_WrongNumArgs(interp, 1, objv, "?switches? exp string subSpec ?varName?"); optionError: if (startIndex) { Tcl_DecrRefCount(startIndex); } return TCL_ERROR; } objc -= idx; objv += idx; if (startIndex) { int stringLength = Tcl_GetCharLength(objv[1]); TclGetIntForIndexM(NULL, startIndex, stringLength, &offset); Tcl_DecrRefCount(startIndex); if (offset < 0) { offset = 0; } } if (all && (offset == 0) && (strpbrk(TclGetString(objv[2]), "&\\") == NULL) && (strpbrk(TclGetString(objv[0]), "*+?{}()[].\\|^$") == NULL)) { /* * This is a simple one pair string map situation. We make use of a * slightly modified version of the one pair STR_MAP code. */ int slen, nocase; int (*strCmpFn)(CONST Tcl_UniChar*,CONST Tcl_UniChar*,unsigned long); Tcl_UniChar *p, wsrclc; numMatches = 0; nocase = (cflags & TCL_REG_NOCASE); strCmpFn = nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp; wsrc = Tcl_GetUnicodeFromObj(objv[0], &slen); wstring = Tcl_GetUnicodeFromObj(objv[1], &wlen); wsubspec = Tcl_GetUnicodeFromObj(objv[2], &wsublen); wend = wstring + wlen - (slen ? slen - 1 : 0); result = TCL_OK; if (slen == 0) { /* * regsub behavior for "" matches between each character. 'string * map' skips the "" case. */ if (wstring < wend) { resultPtr = Tcl_NewUnicodeObj(wstring, 0); Tcl_IncrRefCount(resultPtr); for (; wstring < wend; wstring++) { Tcl_AppendUnicodeToObj(resultPtr, wsubspec, wsublen); Tcl_AppendUnicodeToObj(resultPtr, wstring, 1); numMatches++; } wlen = 0; } } else { wsrclc = Tcl_UniCharToLower(*wsrc); for (p = wfirstChar = wstring; wstring < wend; wstring++) { if ((*wstring == *wsrc || (nocase && Tcl_UniCharToLower(*wstring)==wsrclc)) && (slen==1 || (strCmpFn(wstring, wsrc, (unsigned long) slen) == 0))) { if (numMatches == 0) { resultPtr = Tcl_NewUnicodeObj(wstring, 0); Tcl_IncrRefCount(resultPtr); } if (p != wstring) { Tcl_AppendUnicodeToObj(resultPtr, p, wstring - p); p = wstring + slen; } else { p += slen; } wstring = p - 1; Tcl_AppendUnicodeToObj(resultPtr, wsubspec, wsublen); numMatches++; } } if (numMatches) { wlen = wfirstChar + wlen - p; wstring = p; } } objPtr = NULL; subPtr = NULL; goto regsubDone; } regExpr = Tcl_GetRegExpFromObj(interp, objv[0], cflags); if (regExpr == NULL) { return TCL_ERROR; } /* * Make sure to avoid problems where the objects are shared. This can * cause RegExpObj <> UnicodeObj shimmering that causes data corruption. * [Bug #461322] */ if (objv[1] == objv[0]) { objPtr = Tcl_DuplicateObj(objv[1]); } else { objPtr = objv[1]; } wstring = Tcl_GetUnicodeFromObj(objPtr, &wlen); if (objv[2] == objv[0]) { subPtr = Tcl_DuplicateObj(objv[2]); } else { subPtr = objv[2]; } wsubspec = Tcl_GetUnicodeFromObj(subPtr, &wsublen); result = TCL_OK; /* * The following loop is to handle multiple matches within the same source * string; each iteration handles one match and its corresponding * substitution. If "-all" hasn't been specified then the loop body only * gets executed once. We must use 'offset <= wlen' in particular for the * case where the regexp pattern can match the empty string - this is * useful when doing, say, 'regsub -- ^ $str ...' when $str might be * empty. */ numMatches = 0; for ( ; offset <= wlen; ) { /* * The flags argument is set if string is part of a larger string, so * that "^" won't match. */ match = Tcl_RegExpExecObj(interp, regExpr, objPtr, offset, 10 /* matches */, ((offset > 0 && (wstring[offset-1] != (Tcl_UniChar)'\n')) ? TCL_REG_NOTBOL : 0)); if (match < 0) { result = TCL_ERROR; goto done; } if (match == 0) { break; } if (numMatches == 0) { resultPtr = Tcl_NewUnicodeObj(wstring, 0); Tcl_IncrRefCount(resultPtr); if (offset > 0) { /* * Copy the initial portion of the string in if an offset was * specified. */ Tcl_AppendUnicodeToObj(resultPtr, wstring, offset); } } numMatches++; /* * Copy the portion of the source string before the match to the * result variable. */ Tcl_RegExpGetInfo(regExpr, &info); start = info.matches[0].start; end = info.matches[0].end; Tcl_AppendUnicodeToObj(resultPtr, wstring + offset, start); /* * Append the subSpec argument to the variable, making appropriate * substitutions. This code is a bit hairy because of the backslash * conventions and because the code saves up ranges of characters in * subSpec to reduce the number of calls to Tcl_SetVar. */ wsrc = wfirstChar = wsubspec; wend = wsubspec + wsublen; for (ch = *wsrc; wsrc != wend; wsrc++, ch = *wsrc) { if (ch == '&') { idx = 0; } else if (ch == '\\') { ch = wsrc[1]; if ((ch >= '0') && (ch <= '9')) { idx = ch - '0'; } else if ((ch == '\\') || (ch == '&')) { *wsrc = ch; Tcl_AppendUnicodeToObj(resultPtr, wfirstChar, wsrc - wfirstChar + 1); *wsrc = '\\'; wfirstChar = wsrc + 2; wsrc++; continue; } else { continue; } } else { continue; } if (wfirstChar != wsrc) { Tcl_AppendUnicodeToObj(resultPtr, wfirstChar, wsrc - wfirstChar); } if (idx <= info.nsubs) { subStart = info.matches[idx].start; subEnd = info.matches[idx].end; if ((subStart >= 0) && (subEnd >= 0)) { Tcl_AppendUnicodeToObj(resultPtr, wstring + offset + subStart, subEnd - subStart); } } if (*wsrc == '\\') { wsrc++; } wfirstChar = wsrc + 1; } if (wfirstChar != wsrc) { Tcl_AppendUnicodeToObj(resultPtr, wfirstChar, wsrc - wfirstChar); } if (end == 0) { /* * Always consume at least one character of the input string in * order to prevent infinite loops. */ if (offset < wlen) { Tcl_AppendUnicodeToObj(resultPtr, wstring + offset, 1); } offset++; } else { offset += end; if (start == end) { /* * We matched an empty string, which means we must go forward * one more step so we don't match again at the same spot. */ if (offset < wlen) { Tcl_AppendUnicodeToObj(resultPtr, wstring + offset, 1); } offset++; } } if (!all) { break; } } /* * Copy the portion of the source string after the last match to the * result variable. */ regsubDone: if (numMatches == 0) { /* * On zero matches, just ignore the offset, since it shouldn't matter * to us in this case, and the user may have skewed it. */ resultPtr = objv[1]; Tcl_IncrRefCount(resultPtr); } else if (offset < wlen) { Tcl_AppendUnicodeToObj(resultPtr, wstring + offset, wlen - offset); } if (objc == 4) { if (Tcl_ObjSetVar2(interp, objv[3], NULL, resultPtr, 0) == NULL) { Tcl_AppendResult(interp, "couldn't set variable \"", TclGetString(objv[3]), "\"", NULL); result = TCL_ERROR; } else { /* * Set the interpreter's object result to an integer object * holding the number of matches. */ Tcl_SetObjResult(interp, Tcl_NewIntObj(numMatches)); } } else { /* * No varname supplied, so just return the modified string. */ Tcl_SetObjResult(interp, resultPtr); } done: if (objPtr && (objv[1] == objv[0])) { Tcl_DecrRefCount(objPtr); } if (subPtr && (objv[2] == objv[0])) { Tcl_DecrRefCount(subPtr); } if (resultPtr) { Tcl_DecrRefCount(resultPtr); } return result; }  /* *---------------------------------------------------------------------- * * Tcl_RenameObjCmd -- * * This procedure is invoked to process the "rename" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_RenameObjCmd( ClientData dummy, /* Arbitrary value passed to the command. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { char *oldName, *newName; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "oldName newName"); return TCL_ERROR; } oldName = TclGetString(objv[1]); newName = TclGetString(objv[2]); return TclRenameCommand(interp, oldName, newName); }  /* *---------------------------------------------------------------------- * * Tcl_ReturnObjCmd -- * * This object-based procedure is invoked to process the "return" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_ReturnObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { int code, level; Tcl_Obj *returnOpts; /* * General syntax: [return ?-option value ...? ?result?] * An even number of words means an explicit result argument is present. */ int explicitResult = (0 == (objc % 2)); int numOptionWords = objc - 1 - explicitResult; if (TCL_ERROR == TclMergeReturnOptions(interp, numOptionWords, objv+1, &returnOpts, &code, &level)) { return TCL_ERROR; } code = TclProcessReturn(interp, code, level, returnOpts); if (explicitResult) { Tcl_SetObjResult(interp, objv[objc-1]); } return code; }  /* *---------------------------------------------------------------------- * * Tcl_SourceObjCmd -- * * This procedure is invoked to process the "source" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_SourceObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { CONST char *encodingName = NULL; Tcl_Obj *fileName; if (objc != 2 && objc !=4) { Tcl_WrongNumArgs(interp, 1, objv, "?-encoding name? fileName"); return TCL_ERROR; } fileName = objv[objc-1]; if (objc == 4) { static CONST char *options[] = { "-encoding", NULL }; int index; if (TCL_ERROR == Tcl_GetIndexFromObj(interp, objv[1], options, "option", TCL_EXACT, &index)) { return TCL_ERROR; } encodingName = TclGetString(objv[2]); } return Tcl_FSEvalFileEx(interp, fileName, encodingName); }  /* *---------------------------------------------------------------------- * * Tcl_SplitObjCmd -- * * This procedure is invoked to process the "split" Tcl command. See the * user documentation for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_SplitObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { Tcl_UniChar ch; int len; char *splitChars, *stringPtr, *end; int splitCharLen, stringLen; Tcl_Obj *listPtr, *objPtr; if (objc == 2) { splitChars = " \n\t\r"; splitCharLen = 4; } else if (objc == 3) { splitChars = TclGetStringFromObj(objv[2], &splitCharLen); } else { Tcl_WrongNumArgs(interp, 1, objv, "string ?splitChars?"); return TCL_ERROR; } stringPtr = TclGetStringFromObj(objv[1], &stringLen); end = stringPtr + stringLen; listPtr = Tcl_NewObj(); if (stringLen == 0) { /* * Do nothing. */ } else if (splitCharLen == 0) { Tcl_HashTable charReuseTable; Tcl_HashEntry *hPtr; int isNew; /* * Handle the special case of splitting on every character. * * Uses a hash table to ensure that each kind of character has only * one Tcl_Obj instance (multiply-referenced) in the final list. This * is a *major* win when splitting on a long string (especially in the * megabyte range!) - DKF */ Tcl_InitHashTable(&charReuseTable, TCL_ONE_WORD_KEYS); for ( ; stringPtr < end; stringPtr += len) { len = TclUtfToUniChar(stringPtr, &ch); /* * Assume Tcl_UniChar is an integral type... */ hPtr = Tcl_CreateHashEntry(&charReuseTable, (char*)0+ch, &isNew); if (isNew) { TclNewStringObj(objPtr, stringPtr, len); /* * Don't need to fiddle with refcount... */ Tcl_SetHashValue(hPtr, (ClientData) objPtr); } else { objPtr = (Tcl_Obj *) Tcl_GetHashValue(hPtr); } Tcl_ListObjAppendElement(NULL, listPtr, objPtr); } Tcl_DeleteHashTable(&charReuseTable); } else if (splitCharLen == 1) { char *p; /* * Handle the special case of splitting on a single character. This is * only true for the one-char ASCII case, as one unicode char is > 1 * byte in length. */ while (*stringPtr && (p=strchr(stringPtr,(int)*splitChars)) != NULL) { objPtr = Tcl_NewStringObj(stringPtr, p - stringPtr); Tcl_ListObjAppendElement(NULL, listPtr, objPtr); stringPtr = p + 1; } TclNewStringObj(objPtr, stringPtr, end - stringPtr); Tcl_ListObjAppendElement(NULL, listPtr, objPtr); } else { char *element, *p, *splitEnd; int splitLen; Tcl_UniChar splitChar; /* * Normal case: split on any of a given set of characters. Discard * instances of the split characters. */ splitEnd = splitChars + splitCharLen; for (element = stringPtr; stringPtr < end; stringPtr += len) { len = TclUtfToUniChar(stringPtr, &ch); for (p = splitChars; p < splitEnd; p += splitLen) { splitLen = TclUtfToUniChar(p, &splitChar); if (ch == splitChar) { TclNewStringObj(objPtr, element, stringPtr - element); Tcl_ListObjAppendElement(NULL, listPtr, objPtr); element = stringPtr + len; break; } } } TclNewStringObj(objPtr, element, stringPtr - element); Tcl_ListObjAppendElement(NULL, listPtr, objPtr); } Tcl_SetObjResult(interp, listPtr); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringFirstCmd -- * * This procedure is invoked to process the "string first" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringFirstCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar *ustring1, *ustring2; int match, start, length1, length2; if (objc < 3 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "needleString haystackString ?startIndex?"); return TCL_ERROR; } /* * We are searching string2 for the sequence string1. */ match = -1; start = 0; length2 = -1; ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1); ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2); if (objc == 4) { /* * If a startIndex is specified, we will need to fast forward to that * point in the string before we think about a match. */ if (TclGetIntForIndexM(interp, objv[3], length2-1, &start) != TCL_OK){ return TCL_ERROR; } /* * Reread to prevent shimmering problems. */ ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1); ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2); if (start >= length2) { goto str_first_done; } else if (start > 0) { ustring2 += start; length2 -= start; } else if (start < 0) { /* * Invalid start index mapped to string start; Bug #423581 */ start = 0; } } if (length1 > 0) { register Tcl_UniChar *p, *end; end = ustring2 + length2 - length1 + 1; for (p = ustring2; p < end; p++) { /* * Scan forward to find the first character. */ if ((*p == *ustring1) && (TclUniCharNcmp(ustring1, p, (unsigned long) length1) == 0)) { match = p - ustring2; break; } } } /* * Compute the character index of the matching string by counting the * number of characters before the match. */ if ((match != -1) && (objc == 4)) { match += start; } str_first_done: Tcl_SetObjResult(interp, Tcl_NewIntObj(match)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringLastCmd -- * * This procedure is invoked to process the "string last" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringLastCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar *ustring1, *ustring2, *p; int match, start, length1, length2; if (objc < 3 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "needleString haystackString ?startIndex?"); return TCL_ERROR; } /* * We are searching string2 for the sequence string1. */ match = -1; start = 0; length2 = -1; ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1); ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2); if (objc == 4) { /* * If a startIndex is specified, we will need to restrict the string * range to that char index in the string */ if (TclGetIntForIndexM(interp, objv[3], length2-1, &start) != TCL_OK){ return TCL_ERROR; } /* * Reread to prevent shimmering problems. */ ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1); ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2); if (start < 0) { goto str_last_done; } else if (start < length2) { p = ustring2 + start + 1 - length1; } else { p = ustring2 + length2 - length1; } } else { p = ustring2 + length2 - length1; } if (length1 > 0) { for (; p >= ustring2; p--) { /* * Scan backwards to find the first character. */ if ((*p == *ustring1) && !memcmp(ustring1, p, sizeof(Tcl_UniChar) * (size_t)length1)) { match = p - ustring2; break; } } } str_last_done: Tcl_SetObjResult(interp, Tcl_NewIntObj(match)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringIndexCmd -- * * This procedure is invoked to process the "string index" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringIndexCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length, index; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "string charIndex"); return TCL_ERROR; } /* * If we have a ByteArray object, avoid indexing in the Utf string since * the byte array contains one byte per character. Otherwise, use the * Unicode string rep to get the index'th char. */ if (objv[1]->typePtr == &tclByteArrayType) { const unsigned char *string = Tcl_GetByteArrayFromObj(objv[1], &length); if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK){ return TCL_ERROR; } string = Tcl_GetByteArrayFromObj(objv[1], &length); if ((index >= 0) && (index < length)) { Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(string + index, 1)); } } else { /* * Get Unicode char length to calulate what 'end' means. */ length = Tcl_GetCharLength(objv[1]); if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK){ return TCL_ERROR; } if ((index >= 0) && (index < length)) { char buf[TCL_UTF_MAX]; Tcl_UniChar ch; ch = Tcl_GetUniChar(objv[1], index); length = Tcl_UniCharToUtf(ch, buf); Tcl_SetObjResult(interp, Tcl_NewStringObj(buf, length)); } } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringIsCmd -- * * This procedure is invoked to process the "string is" Tcl command. See * the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringIsCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { const char *string1, *string2, *end, *stop; Tcl_UniChar ch; int (*chcomp)(int) = NULL; /* The UniChar comparison function. */ int i, failat = 0, result = 1, strict = 0, index, length1, length2; Tcl_Obj *objPtr, *failVarObj = NULL; Tcl_WideInt w; static const char *isOptions[] = { "alnum", "alpha", "ascii", "control", "boolean", "digit", "double", "false", "graph", "integer", "list", "lower", "print", "punct", "space", "true", "upper", "wideinteger", "wordchar", "xdigit", NULL }; enum isOptions { STR_IS_ALNUM, STR_IS_ALPHA, STR_IS_ASCII, STR_IS_CONTROL, STR_IS_BOOL, STR_IS_DIGIT, STR_IS_DOUBLE, STR_IS_FALSE, STR_IS_GRAPH, STR_IS_INT, STR_IS_LIST, STR_IS_LOWER, STR_IS_PRINT, STR_IS_PUNCT, STR_IS_SPACE, STR_IS_TRUE, STR_IS_UPPER, STR_IS_WIDE, STR_IS_WORD, STR_IS_XDIGIT }; if (objc < 3 || objc > 6) { Tcl_WrongNumArgs(interp, 1, objv, "class ?-strict? ?-failindex var? str"); return TCL_ERROR; } if (Tcl_GetIndexFromObj(interp, objv[1], isOptions, "class", 0, &index) != TCL_OK) { return TCL_ERROR; } if (objc != 3) { for (i = 2; i < objc-1; i++) { string2 = TclGetStringFromObj(objv[i], &length2); if ((length2 > 1) && strncmp(string2, "-strict", (size_t) length2) == 0) { strict = 1; } else if ((length2 > 1) && strncmp(string2, "-failindex", (size_t)length2) == 0){ if (i+1 >= objc-1) { Tcl_WrongNumArgs(interp, 2, objv, "?-strict? ?-failindex var? str"); return TCL_ERROR; } failVarObj = objv[++i]; } else { Tcl_AppendResult(interp, "bad option \"", string2, "\": must be -strict or -failindex", NULL); return TCL_ERROR; } } } /* * We get the objPtr so that we can short-cut for some classes by checking * the object type (int and double), but we need the string otherwise, * because we don't want any conversion of type occuring (as, for example, * Tcl_Get*FromObj would do). */ objPtr = objv[objc-1]; string1 = TclGetStringFromObj(objPtr, &length1); if (length1 == 0 && index != STR_IS_LIST) { if (strict) { result = 0; } goto str_is_done; } end = string1 + length1; /* * When entering here, result == 1 and failat == 0. */ switch ((enum isOptions) index) { case STR_IS_ALNUM: chcomp = Tcl_UniCharIsAlnum; break; case STR_IS_ALPHA: chcomp = Tcl_UniCharIsAlpha; break; case STR_IS_ASCII: chcomp = UniCharIsAscii; break; case STR_IS_BOOL: case STR_IS_TRUE: case STR_IS_FALSE: if (TCL_OK != Tcl_ConvertToType(NULL, objPtr, &tclBooleanType)) { result = 0; } else if (((index == STR_IS_TRUE) && objPtr->internalRep.longValue == 0) || ((index == STR_IS_FALSE) && objPtr->internalRep.longValue != 0)) { result = 0; } break; case STR_IS_CONTROL: chcomp = Tcl_UniCharIsControl; break; case STR_IS_DIGIT: chcomp = Tcl_UniCharIsDigit; break; case STR_IS_DOUBLE: { /* TODO */ if ((objPtr->typePtr == &tclDoubleType) || (objPtr->typePtr == &tclIntType) || #ifndef NO_WIDE_TYPE (objPtr->typePtr == &tclWideIntType) || #endif (objPtr->typePtr == &tclBignumType)) { break; } if (TclParseNumber(NULL, objPtr, NULL, NULL, -1, (const char **) &stop, 0) != TCL_OK) { result = 0; failat = 0; } else { failat = stop - string1; if (stop < end) { result = 0; TclFreeIntRep(objPtr); objPtr->typePtr = NULL; } } break; } case STR_IS_GRAPH: chcomp = Tcl_UniCharIsGraph; break; case STR_IS_INT: if (TCL_OK == TclGetIntFromObj(NULL, objPtr, &i)) { break; } goto failedIntParse; case STR_IS_WIDE: if (TCL_OK == Tcl_GetWideIntFromObj(NULL, objPtr, &w)) { break; } failedIntParse: result = 0; if (failVarObj == NULL) { /* * Don't bother computing the failure point if we're not going to * return it. */ break; } if (TclParseNumber(NULL, objPtr, NULL, NULL, -1, (const char **) &stop, TCL_PARSE_INTEGER_ONLY) == TCL_OK) { if (stop == end) { /* * Entire string parses as an integer, but rejected by * Tcl_Get(Wide)IntFromObj() so we must have overflowed the * target type, and our convention is to return failure at * index -1 in that situation. */ failat = -1; } else { /* * Some prefix parsed as an integer, but not the whole string, * so return failure index as the point where parsing stopped. * Clear out the internal rep, since keeping it would leave * *objPtr in an inconsistent state. */ failat = stop - string1; TclFreeIntRep(objPtr); objPtr->typePtr = NULL; } } else { /* * No prefix is a valid integer. Fail at beginning. */ failat = 0; } break; case STR_IS_LIST: /* * We ignore the strictness here, since empty strings are always * well-formed lists. */ if (TCL_OK == TclListObjLength(NULL, objPtr, &length2)) { break; } if (failVarObj != NULL) { /* * Need to figure out where the list parsing failed, which is * fairly expensive. This is adapted from the core of * SetListFromAny(). */ const char *elemStart, *nextElem, *limit; int lenRemain, elemSize, hasBrace; register const char *p; limit = string1 + length1; failat = -1; for (p=string1, lenRemain=length1; lenRemain > 0; p=nextElem, lenRemain=limit-nextElem) { if (TCL_ERROR == TclFindElement(NULL, p, lenRemain, &elemStart, &nextElem, &elemSize, &hasBrace)) { Tcl_Obj *tmpStr; /* * This is the simplest way of getting the number of * characters parsed. Note that this is not the same as * the number of bytes when parsing strings with non-ASCII * characters in them. * * Skip leading spaces first. This is only really an issue * if it is the first "element" that has the failure. */ while (isspace(UCHAR(*p))) { /* INTL: ? */ p++; } TclNewStringObj(tmpStr, string1, p-string1); failat = Tcl_GetCharLength(tmpStr); TclDecrRefCount(tmpStr); break; } } } result = 0; break; case STR_IS_LOWER: chcomp = Tcl_UniCharIsLower; break; case STR_IS_PRINT: chcomp = Tcl_UniCharIsPrint; break; case STR_IS_PUNCT: chcomp = Tcl_UniCharIsPunct; break; case STR_IS_SPACE: chcomp = Tcl_UniCharIsSpace; break; case STR_IS_UPPER: chcomp = Tcl_UniCharIsUpper; break; case STR_IS_WORD: chcomp = Tcl_UniCharIsWordChar; break; case STR_IS_XDIGIT: for (; string1 < end; string1++, failat++) { /* INTL: We assume unicode is bad for this class. */ if ((*((unsigned char *)string1) >= 0xC0) || !isxdigit(*(unsigned char *)string1)) { result = 0; break; } } break; } if (chcomp != NULL) { for (; string1 < end; string1 += length2, failat++) { length2 = TclUtfToUniChar(string1, &ch); if (!chcomp(ch)) { result = 0; break; } } } /* * Only set the failVarObj when we will return 0 and we have indicated a * valid fail index (>= 0). */ str_is_done: if ((result == 0) && (failVarObj != NULL) && Tcl_ObjSetVar2(interp, failVarObj, NULL, Tcl_NewIntObj(failat), TCL_LEAVE_ERR_MSG) == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(result)); return TCL_OK; } static int UniCharIsAscii( int character) { return (character >= 0) && (character < 0x80); }  /* *---------------------------------------------------------------------- * * StringMapCmd -- * * This procedure is invoked to process the "string map" Tcl command. See * the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringMapCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length1, length2, mapElemc, index; int nocase = 0, mapWithDict = 0, copySource = 0; Tcl_Obj **mapElemv, *sourceObj, *resultPtr; Tcl_UniChar *ustring1, *ustring2, *p, *end; int (*strCmpFn)(const Tcl_UniChar*, const Tcl_UniChar*, unsigned long); if (objc < 3 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "?-nocase? charMap string"); return TCL_ERROR; } if (objc == 4) { const char *string = TclGetStringFromObj(objv[1], &length2); if ((length2 > 1) && strncmp(string, "-nocase", (size_t) length2) == 0) { nocase = 1; } else { Tcl_AppendResult(interp, "bad option \"", string, "\": must be -nocase", NULL); return TCL_ERROR; } } /* * This test is tricky, but has to be that way or you get other strange * inconsistencies (see test string-10.20 for illustration why!) */ if (objv[objc-2]->typePtr == &tclDictType && objv[objc-2]->bytes == NULL){ int i, done; Tcl_DictSearch search; /* * We know the type exactly, so all dict operations will succeed for * sure. This shortens this code quite a bit. */ Tcl_DictObjSize(interp, objv[objc-2], &mapElemc); if (mapElemc == 0) { /* * Empty charMap, just return whatever string was given. */ Tcl_SetObjResult(interp, objv[objc-1]); return TCL_OK; } mapElemc *= 2; mapWithDict = 1; /* * Copy the dictionary out into an array; that's the easiest way to * adapt this code... */ mapElemv = (Tcl_Obj **) TclStackAlloc(interp, sizeof(Tcl_Obj *) * mapElemc); Tcl_DictObjFirst(interp, objv[objc-2], &search, mapElemv+0, mapElemv+1, &done); for (i=2 ; i<mapElemc ; i+=2) { Tcl_DictObjNext(&search, mapElemv+i, mapElemv+i+1, &done); } Tcl_DictObjDone(&search); } else { if (TclListObjGetElements(interp, objv[objc-2], &mapElemc, &mapElemv) != TCL_OK) { return TCL_ERROR; } if (mapElemc == 0) { /* * empty charMap, just return whatever string was given. */ Tcl_SetObjResult(interp, objv[objc-1]); return TCL_OK; } else if (mapElemc & 1) { /* * The charMap must be an even number of key/value items. */ Tcl_SetObjResult(interp, Tcl_NewStringObj("char map list unbalanced", -1)); return TCL_ERROR; } } /* * Take a copy of the source string object if it is the same as the map * string to cut out nasty sharing crashes. [Bug 1018562] */ if (objv[objc-2] == objv[objc-1]) { sourceObj = Tcl_DuplicateObj(objv[objc-1]); copySource = 1; } else { sourceObj = objv[objc-1]; } ustring1 = Tcl_GetUnicodeFromObj(sourceObj, &length1); if (length1 == 0) { /* * Empty input string, just stop now. */ goto done; } end = ustring1 + length1; strCmpFn = (nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp); /* * Force result to be Unicode */ resultPtr = Tcl_NewUnicodeObj(ustring1, 0); if (mapElemc == 2) { /* * Special case for one map pair which avoids the extra for loop and * extra calls to get Unicode data. The algorithm is otherwise * identical to the multi-pair case. This will be >30% faster on * larger strings. */ int mapLen; Tcl_UniChar *mapString, u2lc; ustring2 = Tcl_GetUnicodeFromObj(mapElemv[0], &length2); p = ustring1; if ((length2 > length1) || (length2 == 0)) { /* * Match string is either longer than input or empty. */ ustring1 = end; } else { mapString = Tcl_GetUnicodeFromObj(mapElemv[1], &mapLen); u2lc = (nocase ? Tcl_UniCharToLower(*ustring2) : 0); for (; ustring1 < end; ustring1++) { if (((*ustring1 == *ustring2) || (nocase&&Tcl_UniCharToLower(*ustring1)==u2lc)) && (length2==1 || strCmpFn(ustring1, ustring2, (unsigned long) length2) == 0)) { if (p != ustring1) { Tcl_AppendUnicodeToObj(resultPtr, p, ustring1-p); p = ustring1 + length2; } else { p += length2; } ustring1 = p - 1; Tcl_AppendUnicodeToObj(resultPtr, mapString, mapLen); } } } } else { Tcl_UniChar **mapStrings, *u2lc = NULL; int *mapLens; /* * Precompute pointers to the unicode string and length. This saves us * repeated function calls later, significantly speeding up the * algorithm. We only need the lowercase first char in the nocase * case. */ mapStrings = (Tcl_UniChar **) TclStackAlloc(interp, mapElemc * 2 * sizeof(Tcl_UniChar *)); mapLens = (int *) TclStackAlloc(interp, mapElemc * 2 * sizeof(int)); if (nocase) { u2lc = (Tcl_UniChar *) TclStackAlloc(interp, mapElemc * sizeof(Tcl_UniChar)); } for (index = 0; index < mapElemc; index++) { mapStrings[index] = Tcl_GetUnicodeFromObj(mapElemv[index], mapLens+index); if (nocase && ((index % 2) == 0)) { u2lc[index/2] = Tcl_UniCharToLower(*mapStrings[index]); } } for (p = ustring1; ustring1 < end; ustring1++) { for (index = 0; index < mapElemc; index += 2) { /* * Get the key string to match on. */ ustring2 = mapStrings[index]; length2 = mapLens[index]; if ((length2 > 0) && ((*ustring1 == *ustring2) || (nocase && (Tcl_UniCharToLower(*ustring1) == u2lc[index/2]))) && /* Restrict max compare length. */ (end-ustring1 >= length2) && ((length2 == 1) || !strCmpFn(ustring2, ustring1, (unsigned) length2))) { if (p != ustring1) { /* * Put the skipped chars onto the result first. */ Tcl_AppendUnicodeToObj(resultPtr, p, ustring1-p); p = ustring1 + length2; } else { p += length2; } /* * Adjust len to be full length of matched string. */ ustring1 = p - 1; /* * Append the map value to the unicode string. */ Tcl_AppendUnicodeToObj(resultPtr, mapStrings[index+1], mapLens[index+1]); break; } } } if (nocase) { TclStackFree(interp, u2lc); } TclStackFree(interp, mapLens); TclStackFree(interp, mapStrings); } if (p != ustring1) { /* * Put the rest of the unmapped chars onto result. */ Tcl_AppendUnicodeToObj(resultPtr, p, ustring1 - p); } Tcl_SetObjResult(interp, resultPtr); done: if (mapWithDict) { TclStackFree(interp, mapElemv); } if (copySource) { Tcl_DecrRefCount(sourceObj); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringMatchCmd -- * * This procedure is invoked to process the "string match" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringMatchCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int nocase = 0; if (objc < 3 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "?-nocase? pattern string"); return TCL_ERROR; } if (objc == 4) { int length; const char *string = TclGetStringFromObj(objv[1], &length); if ((length > 1) && strncmp(string, "-nocase", (size_t) length) == 0) { nocase = TCL_MATCH_NOCASE; } else { Tcl_AppendResult(interp, "bad option \"", string, "\": must be -nocase", NULL); return TCL_ERROR; } } Tcl_SetObjResult(interp, Tcl_NewBooleanObj( TclStringMatchObj(objv[objc-1], objv[objc-2], nocase))); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringRangeCmd -- * * This procedure is invoked to process the "string range" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringRangeCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { const unsigned char *string; int length, first, last; if (objc != 4) { Tcl_WrongNumArgs(interp, 1, objv, "string first last"); return TCL_ERROR; } /* * If we have a ByteArray object, avoid indexing in the Utf string since * the byte array contains one byte per character. Otherwise, use the * Unicode string rep to get the range. */ if (objv[1]->typePtr == &tclByteArrayType) { string = Tcl_GetByteArrayFromObj(objv[1], &length); length--; } else { /* * Get the length in actual characters. */ string = NULL; length = Tcl_GetCharLength(objv[1]) - 1; } if (TclGetIntForIndexM(interp, objv[2], length, &first) != TCL_OK || TclGetIntForIndexM(interp, objv[3], length, &last) != TCL_OK) { return TCL_ERROR; } if (first < 0) { first = 0; } if (last >= length) { last = length; } if (last >= first) { if (string != NULL) { /* * Reread the string to prevent shimmering nasties. */ string = Tcl_GetByteArrayFromObj(objv[1], &length); Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(string+first, last - first + 1)); } else { Tcl_SetObjResult(interp, Tcl_GetRange(objv[1], first, last)); } } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringReptCmd -- * * This procedure is invoked to process the "string repeat" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringReptCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { const char *string1; char *string2; int count, index, length1, length2; Tcl_Obj *resultPtr; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "string count"); return TCL_ERROR; } if (TclGetIntFromObj(interp, objv[2], &count) != TCL_OK) { return TCL_ERROR; } /* * Check for cases that allow us to skip copying stuff. */ if (count == 1) { Tcl_SetObjResult(interp, objv[1]); goto done; } else if (count < 1) { goto done; } string1 = TclGetStringFromObj(objv[1], &length1); if (length1 <= 0) { goto done; } /* * Only build up a string that has data. Instead of building it up with * repeated appends, we just allocate the necessary space once and copy * the string value in. Check for overflow with back-division. [Bug * #714106] */ length2 = length1 * count + 1; if ((length2-1) / count != length1) { Tcl_SetObjResult(interp, Tcl_ObjPrintf( "string size overflow, must be less than %d", INT_MAX)); return TCL_ERROR; } /* * Include space for the NUL. */ string2 = attemptckalloc((size_t) length2); if (string2 == NULL) { /* * Alloc failed. Note that in this case we try to do an error message * since this is a case that's most likely when the alloc is large and * that's easy to do with this API. Note that if we fail allocating a * short string, this will likely keel over too (and fatally). */ Tcl_SetObjResult(interp, Tcl_ObjPrintf( "string size overflow, out of memory allocating %d bytes", length2)); return TCL_ERROR; } for (index = 0; index < count; index++) { memcpy(string2 + (length1 * index), string1, (size_t) length1); } string2[length2-1] = '\0'; /* * We have to directly assign this instead of using Tcl_SetStringObj (and * indirectly TclInitStringRep) because that makes another copy of the * data. */ TclNewObj(resultPtr); resultPtr->bytes = string2; resultPtr->length = length2-1; Tcl_SetObjResult(interp, resultPtr); done: return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringRplcCmd -- * * This procedure is invoked to process the "string replace" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringRplcCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar *ustring; int first, last, length; if (objc < 4 || objc > 5) { Tcl_WrongNumArgs(interp, 1, objv, "string first last ?string?"); return TCL_ERROR; } ustring = Tcl_GetUnicodeFromObj(objv[1], &length); length--; if (TclGetIntForIndexM(interp, objv[2], length, &first) != TCL_OK || TclGetIntForIndexM(interp, objv[3], length, &last) != TCL_OK){ return TCL_ERROR; } if ((last < first) || (last < 0) || (first > length)) { Tcl_SetObjResult(interp, objv[1]); } else { Tcl_Obj *resultPtr; ustring = Tcl_GetUnicodeFromObj(objv[1], &length); length--; if (first < 0) { first = 0; } resultPtr = Tcl_NewUnicodeObj(ustring, first); if (objc == 5) { Tcl_AppendObjToObj(resultPtr, objv[4]); } if (last < length) { Tcl_AppendUnicodeToObj(resultPtr, ustring + last + 1, length - last); } Tcl_SetObjResult(interp, resultPtr); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringRevCmd -- * * This procedure is invoked to process the "string reverse" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringRevCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "string"); return TCL_ERROR; } Tcl_SetObjResult(interp, TclStringObjReverse(objv[1])); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringStartCmd -- * * This procedure is invoked to process the "string wordstart" Tcl * command. See the user documentation for details on what it does. Note * that this command only functions correctly on properly formed Tcl UTF * strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringStartCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar ch; const char *p, *string; int cur, index, length, numChars; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "string index"); return TCL_ERROR; } string = TclGetStringFromObj(objv[1], &length); numChars = Tcl_NumUtfChars(string, length); if (TclGetIntForIndexM(interp, objv[2], numChars-1, &index) != TCL_OK) { return TCL_ERROR; } string = TclGetStringFromObj(objv[1], &length); if (index >= numChars) { index = numChars - 1; } cur = 0; if (index > 0) { p = Tcl_UtfAtIndex(string, index); for (cur = index; cur >= 0; cur--) { TclUtfToUniChar(p, &ch); if (!Tcl_UniCharIsWordChar(ch)) { break; } p = Tcl_UtfPrev(p, string); } if (cur != index) { cur += 1; } } Tcl_SetObjResult(interp, Tcl_NewIntObj(cur)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringEndCmd -- * * This procedure is invoked to process the "string wordend" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringEndCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar ch; const char *p, *end, *string; int cur, index, length, numChars; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "string index"); return TCL_ERROR; } string = TclGetStringFromObj(objv[1], &length); numChars = Tcl_NumUtfChars(string, length); if (TclGetIntForIndexM(interp, objv[2], numChars-1, &index) != TCL_OK) { return TCL_ERROR; } string = TclGetStringFromObj(objv[1], &length); if (index < 0) { index = 0; } if (index < numChars) { p = Tcl_UtfAtIndex(string, index); end = string+length; for (cur = index; p < end; cur++) { p += TclUtfToUniChar(p, &ch); if (!Tcl_UniCharIsWordChar(ch)) { break; } } if (cur == index) { cur++; } } else { cur = numChars; } Tcl_SetObjResult(interp, Tcl_NewIntObj(cur)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringEqualCmd -- * * This procedure is invoked to process the "string equal" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringEqualCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { /* * Remember to keep code here in some sync with the byte-compiled versions * in tclExecute.c (INST_STR_EQ, INST_STR_NEQ and INST_STR_CMP as well as * the expr string comparison in INST_EQ/INST_NEQ/INST_LT/...). */ char *string1, *string2; int length1, length2, i, match, length, nocase = 0, reqlength = -1; typedef int (*strCmpFn_t)(const char *, const char *, unsigned int); strCmpFn_t strCmpFn; if (objc < 3 || objc > 6) { str_cmp_args: Tcl_WrongNumArgs(interp, 1, objv, "?-nocase? ?-length int? string1 string2"); return TCL_ERROR; } for (i = 1; i < objc-2; i++) { string2 = TclGetStringFromObj(objv[i], &length2); if ((length2 > 1) && !strncmp(string2, "-nocase", (size_t)length2)) { nocase = 1; } else if ((length2 > 1) && !strncmp(string2, "-length", (size_t)length2)) { if (i+1 >= objc-2) { goto str_cmp_args; } ++i; if (TclGetIntFromObj(interp, objv[i], &reqlength) != TCL_OK) { return TCL_ERROR; } } else { Tcl_AppendResult(interp, "bad option \"", string2, "\": must be -nocase or -length", NULL); return TCL_ERROR; } } /* * From now on, we only access the two objects at the end of the argument * array. */ objv += objc-2; if ((reqlength == 0) || (objv[0] == objv[1])) { /* * Always match at 0 chars of if it is the same obj. */ Tcl_SetObjResult(interp, Tcl_NewBooleanObj(1)); return TCL_OK; } if (!nocase && objv[0]->typePtr == &tclByteArrayType && objv[1]->typePtr == &tclByteArrayType) { /* * Use binary versions of comparisons since that won't cause undue * type conversions and it is much faster. Only do this if we're * case-sensitive (which is all that really makes sense with byte * arrays anyway, and we have no memcasecmp() for some reason... :^) */ string1 = (char *) Tcl_GetByteArrayFromObj(objv[0], &length1); string2 = (char *) Tcl_GetByteArrayFromObj(objv[1], &length2); strCmpFn = (strCmpFn_t) memcmp; } else if ((objv[0]->typePtr == &tclStringType) && (objv[1]->typePtr == &tclStringType)) { /* * Do a unicode-specific comparison if both of the args are of String * type. In benchmark testing this proved the most efficient check * between the unicode and string comparison operations. */ string1 = (char *) Tcl_GetUnicodeFromObj(objv[0], &length1); string2 = (char *) Tcl_GetUnicodeFromObj(objv[1], &length2); strCmpFn = (strCmpFn_t) (nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp); } else { /* * As a catch-all we will work with UTF-8. We cannot use memcmp() as * that is unsafe with any string containing NUL (\xC0\x80 in Tcl's * utf rep). We can use the more efficient TclpUtfNcmp2 if we are * case-sensitive and no specific length was requested. */ string1 = (char *) TclGetStringFromObj(objv[0], &length1); string2 = (char *) TclGetStringFromObj(objv[1], &length2); if ((reqlength < 0) && !nocase) { strCmpFn = (strCmpFn_t) TclpUtfNcmp2; } else { length1 = Tcl_NumUtfChars(string1, length1); length2 = Tcl_NumUtfChars(string2, length2); strCmpFn = (strCmpFn_t) (nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp); } } if ((reqlength < 0) && (length1 != length2)) { match = 1; /* This will be reversed below. */ } else { length = (length1 < length2) ? length1 : length2; if (reqlength > 0 && reqlength < length) { length = reqlength; } else if (reqlength < 0) { /* * The requested length is negative, so we ignore it by setting it * to length + 1 so we correct the match var. */ reqlength = length + 1; } match = strCmpFn(string1, string2, (unsigned) length); if ((match == 0) && (reqlength > length)) { match = length1 - length2; } } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(match ? 0 : 1)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringCmpCmd -- * * This procedure is invoked to process the "string compare" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringCmpCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { /* * Remember to keep code here in some sync with the byte-compiled versions * in tclExecute.c (INST_STR_EQ, INST_STR_NEQ and INST_STR_CMP as well as * the expr string comparison in INST_EQ/INST_NEQ/INST_LT/...). */ char *string1, *string2; int length1, length2, i, match, length, nocase = 0, reqlength = -1; typedef int (*strCmpFn_t)(const char *, const char *, unsigned int); strCmpFn_t strCmpFn; if (objc < 3 || objc > 6) { str_cmp_args: Tcl_WrongNumArgs(interp, 1, objv, "?-nocase? ?-length int? string1 string2"); return TCL_ERROR; } for (i = 1; i < objc-2; i++) { string2 = TclGetStringFromObj(objv[i], &length2); if ((length2 > 1) && !strncmp(string2, "-nocase", (size_t)length2)) { nocase = 1; } else if ((length2 > 1) && !strncmp(string2, "-length", (size_t)length2)) { if (i+1 >= objc-2) { goto str_cmp_args; } ++i; if (TclGetIntFromObj(interp, objv[i], &reqlength) != TCL_OK) { return TCL_ERROR; } } else { Tcl_AppendResult(interp, "bad option \"", string2, "\": must be -nocase or -length", NULL); return TCL_ERROR; } } /* * From now on, we only access the two objects at the end of the argument * array. */ objv += objc-2; if ((reqlength == 0) || (objv[0] == objv[1])) { /* * Always match at 0 chars of if it is the same obj. */ Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0)); return TCL_OK; } if (!nocase && objv[0]->typePtr == &tclByteArrayType && objv[1]->typePtr == &tclByteArrayType) { /* * Use binary versions of comparisons since that won't cause undue * type conversions and it is much faster. Only do this if we're * case-sensitive (which is all that really makes sense with byte * arrays anyway, and we have no memcasecmp() for some reason... :^) */ string1 = (char *) Tcl_GetByteArrayFromObj(objv[0], &length1); string2 = (char *) Tcl_GetByteArrayFromObj(objv[1], &length2); strCmpFn = (strCmpFn_t) memcmp; } else if ((objv[0]->typePtr == &tclStringType) && (objv[1]->typePtr == &tclStringType)) { /* * Do a unicode-specific comparison if both of the args are of String * type. In benchmark testing this proved the most efficient check * between the unicode and string comparison operations. */ string1 = (char *) Tcl_GetUnicodeFromObj(objv[0], &length1); string2 = (char *) Tcl_GetUnicodeFromObj(objv[1], &length2); strCmpFn = (strCmpFn_t) (nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp); } else { /* * As a catch-all we will work with UTF-8. We cannot use memcmp() as * that is unsafe with any string containing NUL (\xC0\x80 in Tcl's * utf rep). We can use the more efficient TclpUtfNcmp2 if we are * case-sensitive and no specific length was requested. */ string1 = (char *) TclGetStringFromObj(objv[0], &length1); string2 = (char *) TclGetStringFromObj(objv[1], &length2); if ((reqlength < 0) && !nocase) { strCmpFn = (strCmpFn_t) TclpUtfNcmp2; } else { length1 = Tcl_NumUtfChars(string1, length1); length2 = Tcl_NumUtfChars(string2, length2); strCmpFn = (strCmpFn_t) (nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp); } } length = (length1 < length2) ? length1 : length2; if (reqlength > 0 && reqlength < length) { length = reqlength; } else if (reqlength < 0) { /* * The requested length is negative, so we ignore it by setting it to * length + 1 so we correct the match var. */ reqlength = length + 1; } match = strCmpFn(string1, string2, (unsigned) length); if ((match == 0) && (reqlength > length)) { match = length1 - length2; } Tcl_SetObjResult(interp, Tcl_NewIntObj((match > 0) ? 1 : (match < 0) ? -1 : 0)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringBytesCmd -- * * This procedure is invoked to process the "string bytelength" Tcl * command. See the user documentation for details on what it does. Note * that this command only functions correctly on properly formed Tcl UTF * strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringBytesCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "string"); return TCL_ERROR; } (void) TclGetStringFromObj(objv[1], &length); Tcl_SetObjResult(interp, Tcl_NewIntObj(length)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringLenCmd -- * * This procedure is invoked to process the "string length" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringLenCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "string"); return TCL_ERROR; } /* * If we have a ByteArray object, avoid recomputing the string since the * byte array contains one byte per character. Otherwise, use the Unicode * string rep to calculate the length. */ if (objv[1]->typePtr == &tclByteArrayType) { (void) Tcl_GetByteArrayFromObj(objv[1], &length); } else { length = Tcl_GetCharLength(objv[1]); } Tcl_SetObjResult(interp, Tcl_NewIntObj(length)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringLowerCmd -- * * This procedure is invoked to process the "string tolower" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringLowerCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length1, length2; char *string1, *string2; if (objc < 2 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "string ?first? ?last?"); return TCL_ERROR; } string1 = TclGetStringFromObj(objv[1], &length1); if (objc == 2) { Tcl_Obj *resultPtr = Tcl_NewStringObj(string1, length1); length1 = Tcl_UtfToLower(TclGetString(resultPtr)); Tcl_SetObjLength(resultPtr, length1); Tcl_SetObjResult(interp, resultPtr); } else { int first, last; const char *start, *end; Tcl_Obj *resultPtr; length1 = Tcl_NumUtfChars(string1, length1) - 1; if (TclGetIntForIndexM(interp,objv[2],length1, &first) != TCL_OK) { return TCL_ERROR; } if (first < 0) { first = 0; } last = first; if ((objc == 4) && (TclGetIntForIndexM(interp, objv[3], length1, &last) != TCL_OK)) { return TCL_ERROR; } if (last >= length1) { last = length1; } if (last < first) { Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } string1 = TclGetStringFromObj(objv[1], &length1); start = Tcl_UtfAtIndex(string1, first); end = Tcl_UtfAtIndex(start, last - first + 1); resultPtr = Tcl_NewStringObj(string1, end - string1); string2 = TclGetString(resultPtr) + (start - string1); length2 = Tcl_UtfToLower(string2); Tcl_SetObjLength(resultPtr, length2 + (start - string1)); Tcl_AppendToObj(resultPtr, end, -1); Tcl_SetObjResult(interp, resultPtr); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringUpperCmd -- * * This procedure is invoked to process the "string toupper" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringUpperCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length1, length2; char *string1, *string2; if (objc < 2 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "string ?first? ?last?"); return TCL_ERROR; } string1 = TclGetStringFromObj(objv[1], &length1); if (objc == 2) { Tcl_Obj *resultPtr = Tcl_NewStringObj(string1, length1); length1 = Tcl_UtfToUpper(TclGetString(resultPtr)); Tcl_SetObjLength(resultPtr, length1); Tcl_SetObjResult(interp, resultPtr); } else { int first, last; const char *start, *end; Tcl_Obj *resultPtr; length1 = Tcl_NumUtfChars(string1, length1) - 1; if (TclGetIntForIndexM(interp,objv[2],length1, &first) != TCL_OK) { return TCL_ERROR; } if (first < 0) { first = 0; } last = first; if ((objc == 4) && (TclGetIntForIndexM(interp, objv[3], length1, &last) != TCL_OK)) { return TCL_ERROR; } if (last >= length1) { last = length1; } if (last < first) { Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } string1 = TclGetStringFromObj(objv[1], &length1); start = Tcl_UtfAtIndex(string1, first); end = Tcl_UtfAtIndex(start, last - first + 1); resultPtr = Tcl_NewStringObj(string1, end - string1); string2 = TclGetString(resultPtr) + (start - string1); length2 = Tcl_UtfToUpper(string2); Tcl_SetObjLength(resultPtr, length2 + (start - string1)); Tcl_AppendToObj(resultPtr, end, -1); Tcl_SetObjResult(interp, resultPtr); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringTitleCmd -- * * This procedure is invoked to process the "string totitle" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringTitleCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { int length1, length2; char *string1, *string2; if (objc < 2 || objc > 4) { Tcl_WrongNumArgs(interp, 1, objv, "string ?first? ?last?"); return TCL_ERROR; } string1 = TclGetStringFromObj(objv[1], &length1); if (objc == 2) { Tcl_Obj *resultPtr = Tcl_NewStringObj(string1, length1); length1 = Tcl_UtfToTitle(TclGetString(resultPtr)); Tcl_SetObjLength(resultPtr, length1); Tcl_SetObjResult(interp, resultPtr); } else { int first, last; const char *start, *end; Tcl_Obj *resultPtr; length1 = Tcl_NumUtfChars(string1, length1) - 1; if (TclGetIntForIndexM(interp,objv[2],length1, &first) != TCL_OK) { return TCL_ERROR; } if (first < 0) { first = 0; } last = first; if ((objc == 4) && (TclGetIntForIndexM(interp, objv[3], length1, &last) != TCL_OK)) { return TCL_ERROR; } if (last >= length1) { last = length1; } if (last < first) { Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } string1 = TclGetStringFromObj(objv[1], &length1); start = Tcl_UtfAtIndex(string1, first); end = Tcl_UtfAtIndex(start, last - first + 1); resultPtr = Tcl_NewStringObj(string1, end - string1); string2 = TclGetString(resultPtr) + (start - string1); length2 = Tcl_UtfToTitle(string2); Tcl_SetObjLength(resultPtr, length2 + (start - string1)); Tcl_AppendToObj(resultPtr, end, -1); Tcl_SetObjResult(interp, resultPtr); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringTrimCmd -- * * This procedure is invoked to process the "string trim" Tcl command. * See the user documentation for details on what it does. Note that this * command only functions correctly on properly formed Tcl UTF strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringTrimCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar ch, trim; register const char *p, *end; const char *check, *checkEnd, *string1, *string2; int offset, length1, length2; if (objc == 3) { string2 = TclGetStringFromObj(objv[2], &length2); } else if (objc == 2) { string2 = " \t\n\r"; length2 = strlen(string2); } else { Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?"); return TCL_ERROR; } string1 = TclGetStringFromObj(objv[1], &length1); checkEnd = string2 + length2; /* * The outer loop iterates over the string. The inner loop iterates over * the trim characters. The loops terminate as soon as a non-trim * character is discovered and string1 is left pointing at the first * non-trim character. */ end = string1 + length1; for (p = string1; p < end; p += offset) { offset = TclUtfToUniChar(p, &ch); for (check = string2; ; ) { if (check >= checkEnd) { p = end; break; } check += TclUtfToUniChar(check, &trim); if (ch == trim) { length1 -= offset; string1 += offset; break; } } } /* * The outer loop iterates over the string. The inner loop iterates over * the trim characters. The loops terminate as soon as a non-trim * character is discovered and length1 marks the last non-trim character. */ end = string1; for (p = string1 + length1; p > end; ) { p = Tcl_UtfPrev(p, string1); offset = TclUtfToUniChar(p, &ch); check = string2; while (1) { if (check >= checkEnd) { p = end; break; } check += TclUtfToUniChar(check, &trim); if (ch == trim) { length1 -= offset; break; } } } Tcl_SetObjResult(interp, Tcl_NewStringObj(string1, length1)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringTrimLCmd -- * * This procedure is invoked to process the "string trimleft" Tcl * command. See the user documentation for details on what it does. Note * that this command only functions correctly on properly formed Tcl UTF * strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringTrimLCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar ch, trim; register const char *p, *end; const char *check, *checkEnd, *string1, *string2; int offset, length1, length2; if (objc == 3) { string2 = TclGetStringFromObj(objv[2], &length2); } else if (objc == 2) { string2 = " \t\n\r"; length2 = strlen(string2); } else { Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?"); return TCL_ERROR; } string1 = TclGetStringFromObj(objv[1], &length1); checkEnd = string2 + length2; /* * The outer loop iterates over the string. The inner loop iterates over * the trim characters. The loops terminate as soon as a non-trim * character is discovered and string1 is left pointing at the first * non-trim character. */ end = string1 + length1; for (p = string1; p < end; p += offset) { offset = TclUtfToUniChar(p, &ch); for (check = string2; ; ) { if (check >= checkEnd) { p = end; break; } check += TclUtfToUniChar(check, &trim); if (ch == trim) { length1 -= offset; string1 += offset; break; } } } Tcl_SetObjResult(interp, Tcl_NewStringObj(string1, length1)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * StringTrimRCmd -- * * This procedure is invoked to process the "string trimright" Tcl * command. See the user documentation for details on what it does. Note * that this command only functions correctly on properly formed Tcl UTF * strings. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ static int StringTrimRCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_UniChar ch, trim; register const char *p, *end; const char *check, *checkEnd, *string1, *string2; int offset, length1, length2; if (objc == 3) { string2 = TclGetStringFromObj(objv[2], &length2); } else if (objc == 2) { string2 = " \t\n\r"; length2 = strlen(string2); } else { Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?"); return TCL_ERROR; } string1 = TclGetStringFromObj(objv[1], &length1); checkEnd = string2 + length2; /* * The outer loop iterates over the string. The inner loop iterates over * the trim characters. The loops terminate as soon as a non-trim * character is discovered and length1 marks the last non-trim character. */ end = string1; for (p = string1 + length1; p > end; ) { p = Tcl_UtfPrev(p, string1); offset = TclUtfToUniChar(p, &ch); check = string2; while (1) { if (check >= checkEnd) { p = end; break; } check += TclUtfToUniChar(check, &trim); if (ch == trim) { length1 -= offset; break; } } } Tcl_SetObjResult(interp, Tcl_NewStringObj(string1, length1)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * TclInitStringCmd -- * * This procedure creates the "string" Tcl command. See the user * documentation for details on what it does. Note that this command only * functions correctly on properly formed Tcl UTF strings. * * Also note that the primary methods here (equal, compare, match, ...) * have bytecode equivalents. You will find the code for those in * tclExecute.c. The code here will only be used in the non-bc case (like * in an 'eval'). * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ Tcl_Command TclInitStringCmd( Tcl_Interp *interp) /* Current interpreter. */ { static const EnsembleImplMap stringImplMap[] = { {"bytelength", StringBytesCmd, NULL}, {"compare", StringCmpCmd, TclCompileStringCmpCmd}, {"equal", StringEqualCmd, TclCompileStringEqualCmd}, {"first", StringFirstCmd, NULL}, {"index", StringIndexCmd, TclCompileStringIndexCmd}, {"is", StringIsCmd, NULL}, {"last", StringLastCmd, NULL}, {"length", StringLenCmd, TclCompileStringLenCmd}, {"map", StringMapCmd, NULL}, {"match", StringMatchCmd, TclCompileStringMatchCmd}, {"range", StringRangeCmd, NULL}, {"repeat", StringReptCmd, NULL}, {"replace", StringRplcCmd, NULL}, {"reverse", StringRevCmd, NULL}, {"tolower", StringLowerCmd, NULL}, {"toupper", StringUpperCmd, NULL}, {"totitle", StringTitleCmd, NULL}, {"trim", StringTrimCmd, NULL}, {"trimleft", StringTrimLCmd, NULL}, {"trimright", StringTrimRCmd, NULL}, {"wordend", StringEndCmd, NULL}, {"wordstart", StringStartCmd, NULL}, {NULL} }; return TclMakeEnsemble(interp, "string", stringImplMap); }  /* *---------------------------------------------------------------------- * * Tcl_SubstObjCmd -- * * This procedure is invoked to process the "subst" Tcl command. See the * user documentation for details on what it does. This command relies on * Tcl_SubstObj() for its implementation. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_SubstObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { static CONST char *substOptions[] = { "-nobackslashes", "-nocommands", "-novariables", NULL }; enum substOptions { SUBST_NOBACKSLASHES, SUBST_NOCOMMANDS, SUBST_NOVARS }; Tcl_Obj *resultPtr; int flags, i; /* * Parse command-line options. */ flags = TCL_SUBST_ALL; for (i = 1; i < (objc-1); i++) { int optionIndex; if (Tcl_GetIndexFromObj(interp, objv[i], substOptions, "switch", 0, &optionIndex) != TCL_OK) { return TCL_ERROR; } switch (optionIndex) { case SUBST_NOBACKSLASHES: flags &= ~TCL_SUBST_BACKSLASHES; break; case SUBST_NOCOMMANDS: flags &= ~TCL_SUBST_COMMANDS; break; case SUBST_NOVARS: flags &= ~TCL_SUBST_VARIABLES; break; default: Tcl_Panic("Tcl_SubstObjCmd: bad option index to SubstOptions"); } } if (i != objc-1) { Tcl_WrongNumArgs(interp, 1, objv, "?-nobackslashes? ?-nocommands? ?-novariables? string"); return TCL_ERROR; } /* * Perform the substitution. */ resultPtr = Tcl_SubstObj(interp, objv[i], flags); if (resultPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, resultPtr); return TCL_OK; }  /* *---------------------------------------------------------------------- * * Tcl_SwitchObjCmd -- * * This object-based procedure is invoked to process the "switch" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_SwitchObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { int i,j, index, mode, foundmode, result, splitObjs, numMatchesSaved; int noCase, patternLength; char *pattern; Tcl_Obj *stringObj, *indexVarObj, *matchVarObj; Tcl_Obj *CONST *savedObjv = objv; Tcl_RegExp regExpr = NULL; Interp *iPtr = (Interp *) interp; int pc = 0; int bidx = 0; /* Index of body argument. */ Tcl_Obj *blist = NULL; /* List obj which is the body */ CmdFrame *ctxPtr; /* Copy of the topmost cmdframe, to allow us * to mess with the line information */ /* * If you add options that make -e and -g not unique prefixes of -exact or * -glob, you *must* fix TclCompileSwitchCmd's option parser as well. */ static CONST char *options[] = { "-exact", "-glob", "-indexvar", "-matchvar", "-nocase", "-regexp", "--", NULL }; enum options { OPT_EXACT, OPT_GLOB, OPT_INDEXV, OPT_MATCHV, OPT_NOCASE, OPT_REGEXP, OPT_LAST }; typedef int (*strCmpFn_t)(const char *, const char *); strCmpFn_t strCmpFn = strcmp; mode = OPT_EXACT; foundmode = 0; indexVarObj = NULL; matchVarObj = NULL; numMatchesSaved = 0; noCase = 0; for (i = 1; i < objc-2; i++) { if (TclGetString(objv[i])[0] != '-') { break; } if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, &index) != TCL_OK) { return TCL_ERROR; } switch ((enum options) index) { /* * General options. */ case OPT_LAST: i++; goto finishedOptions; case OPT_NOCASE: strCmpFn = strcasecmp; noCase = 1; break; /* * Handle the different switch mode options. */ default: if (foundmode) { /* * Mode already set via -exact, -glob, or -regexp. */ Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[i]), "\": ", options[mode], " option already found", NULL); return TCL_ERROR; } else { foundmode = 1; mode = index; break; } /* * Check for TIP#75 options specifying the variables to write * regexp information into. */ case OPT_INDEXV: i++; if (i >= objc-2) { Tcl_AppendResult(interp, "missing variable name argument to ", "-indexvar", " option", NULL); return TCL_ERROR; } indexVarObj = objv[i]; numMatchesSaved = -1; break; case OPT_MATCHV: i++; if (i >= objc-2) { Tcl_AppendResult(interp, "missing variable name argument to ", "-matchvar", " option", NULL); return TCL_ERROR; } matchVarObj = objv[i]; numMatchesSaved = -1; break; } } finishedOptions: if (objc - i < 2) { Tcl_WrongNumArgs(interp, 1, objv, "?switches? string pattern body ... ?default body?"); return TCL_ERROR; } if (indexVarObj != NULL && mode != OPT_REGEXP) { Tcl_AppendResult(interp, "-indexvar option requires -regexp option", NULL); return TCL_ERROR; } if (matchVarObj != NULL && mode != OPT_REGEXP) { Tcl_AppendResult(interp, "-matchvar option requires -regexp option", NULL); return TCL_ERROR; } stringObj = objv[i]; objc -= i + 1; objv += i + 1; bidx = i + 1; /* First after the match string. */ /* * If all of the pattern/command pairs are lumped into a single argument, * split them out again. * * TIP #280: Determine the lines the words in the list start at, based on * the same data for the list word itself. The cmdFramePtr line * information is manipulated directly. */ splitObjs = 0; if (objc == 1) { Tcl_Obj **listv; blist = objv[0]; if (TclListObjGetElements(interp, objv[0], &objc, &listv) != TCL_OK){ return TCL_ERROR; } /* * Ensure that the list is non-empty. */ if (objc < 1) { Tcl_WrongNumArgs(interp, 1, savedObjv, "?switches? string {pattern body ... ?default body?}"); return TCL_ERROR; } objv = listv; splitObjs = 1; } /* * Complain if there is an odd number of words in the list of patterns and * bodies. */ if (objc % 2) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "extra switch pattern with no body", NULL); /* * Check if this can be due to a badly placed comment in the switch * block. * * The following is an heuristic to detect the infamous "comment in * switch" error: just check if a pattern begins with '#'. */ if (splitObjs) { for (i=0 ; i<objc ; i+=2) { if (TclGetString(objv[i])[0] == '#') { Tcl_AppendResult(interp, ", this may be due to a " "comment incorrectly placed outside of a " "switch body - see the \"switch\" " "documentation", NULL); break; } } } return TCL_ERROR; } /* * Complain if the last body is a continuation. Note that this check * assumes that the list is non-empty! */ if (strcmp(TclGetString(objv[objc-1]), "-") == 0) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "no body specified for pattern \"", TclGetString(objv[objc-2]), "\"", NULL); return TCL_ERROR; } for (i = 0; i < objc; i += 2) { /* * See if the pattern matches the string. */ pattern = TclGetStringFromObj(objv[i], &patternLength); if ((i == objc - 2) && (*pattern == 'd') && (strcmp(pattern, "default") == 0)) { Tcl_Obj *emptyObj = NULL; /* * If either indexVarObj or matchVarObj are non-NULL, we're in * REGEXP mode but have reached the default clause anyway. TIP#75 * specifies that we set the variables to empty lists (== empty * objects) in that case. */ if (indexVarObj != NULL) { TclNewObj(emptyObj); if (Tcl_ObjSetVar2(interp, indexVarObj, NULL, emptyObj, TCL_LEAVE_ERR_MSG) == NULL) { return TCL_ERROR; } } if (matchVarObj != NULL) { if (emptyObj == NULL) { TclNewObj(emptyObj); } if (Tcl_ObjSetVar2(interp, matchVarObj, NULL, emptyObj, TCL_LEAVE_ERR_MSG) == NULL) { return TCL_ERROR; } } goto matchFound; } else { switch (mode) { case OPT_EXACT: if (strCmpFn(TclGetString(stringObj), pattern) == 0) { goto matchFound; } break; case OPT_GLOB: if (Tcl_StringCaseMatch(TclGetString(stringObj), pattern, noCase)) { goto matchFound; } break; case OPT_REGEXP: regExpr = Tcl_GetRegExpFromObj(interp, objv[i], TCL_REG_ADVANCED | (noCase ? TCL_REG_NOCASE : 0)); if (regExpr == NULL) { return TCL_ERROR; } else { int matched = Tcl_RegExpExecObj(interp, regExpr, stringObj, 0, numMatchesSaved, 0); if (matched < 0) { return TCL_ERROR; } else if (matched) { goto matchFoundRegexp; } } break; } } } return TCL_OK; matchFoundRegexp: /* * We are operating in REGEXP mode and we need to store information about * what we matched in some user-nominated arrays. So build the lists of * values and indices to write here. [TIP#75] */ if (numMatchesSaved) { Tcl_RegExpInfo info; Tcl_Obj *matchesObj, *indicesObj = NULL; Tcl_RegExpGetInfo(regExpr, &info); if (matchVarObj != NULL) { TclNewObj(matchesObj); } else { matchesObj = NULL; } if (indexVarObj != NULL) { TclNewObj(indicesObj); } for (j=0 ; j<=info.nsubs ; j++) { if (indexVarObj != NULL) { Tcl_Obj *rangeObjAry[2]; rangeObjAry[0] = Tcl_NewLongObj(info.matches[j].start); rangeObjAry[1] = Tcl_NewLongObj(info.matches[j].end); /* * Never fails; the object is always clean at this point. */ Tcl_ListObjAppendElement(NULL, indicesObj, Tcl_NewListObj(2, rangeObjAry)); } if (matchVarObj != NULL) { Tcl_Obj *substringObj; substringObj = Tcl_GetRange(stringObj, info.matches[j].start, info.matches[j].end-1); /* * Never fails; the object is always clean at this point. */ Tcl_ListObjAppendElement(NULL, matchesObj, substringObj); } } if (indexVarObj != NULL) { if (Tcl_ObjSetVar2(interp, indexVarObj, NULL, indicesObj, TCL_LEAVE_ERR_MSG) == NULL) { /* * Careful! Check to see if we have allocated the list of * matched strings; if so (but there was an error assigning * the indices list) we have a potential memory leak because * the match list has not been written to a variable. Except * that we'll clean that up right now. */ if (matchesObj != NULL) { Tcl_DecrRefCount(matchesObj); } return TCL_ERROR; } } if (matchVarObj != NULL) { if (Tcl_ObjSetVar2(interp, matchVarObj, NULL, matchesObj, TCL_LEAVE_ERR_MSG) == NULL) { /* * Unlike above, if indicesObj is non-NULL at this point, it * will have been written to a variable already and will hence * not be leaked. */ return TCL_ERROR; } } } /* * We've got a match. Find a body to execute, skipping bodies that are * "-". */ matchFound: ctxPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame)); *ctxPtr = *iPtr->cmdFramePtr; if (splitObjs) { /* * We have to perform the GetSrc and other type dependent handling of * the frame here because we are munging with the line numbers, * something the other commands like if, etc. are not doing. Them are * fine with simply passing the CmdFrame through and having the * special handling done in 'info frame', or the bc compiler */ if (ctxPtr->type == TCL_LOCATION_BC) { /* * Type BC => ctxPtr->data.eval.path is not used. * ctxPtr->data.tebc.codePtr is used instead. */ TclGetSrcInfoForPc(ctxPtr); pc = 1; /* * The line information in the cmdFrame is now a copy we do not * own. */ } if (ctxPtr->type == TCL_LOCATION_SOURCE && ctxPtr->line[bidx] >= 0) { int bline = ctxPtr->line[bidx]; ctxPtr->line = (int *) ckalloc(objc * sizeof(int)); ctxPtr->nline = objc; TclListLines(TclGetString(blist), bline, objc, ctxPtr->line); } else { /* * This is either a dynamic code word, when all elements are * relative to themselves, or something else less expected and * where we have no information. The result is the same in both * cases; tell the code to come that it doesn't know where it is, * which triggers reversion to the old behavior. */ int k; ctxPtr->line = (int *) ckalloc(objc * sizeof(int)); ctxPtr->nline = objc; for (k=0; k < objc; k++) { ctxPtr->line[k] = -1; } } } for (j = i + 1; ; j += 2) { if (j >= objc) { /* * This shouldn't happen since we've checked that the last body is * not a continuation... */ Tcl_Panic("fall-out when searching for body to match pattern"); } if (strcmp(TclGetString(objv[j]), "-") != 0) { break; } } /* * TIP #280: Make invoking context available to switch branch. */ result = TclEvalObjEx(interp, objv[j], 0, ctxPtr, j); if (splitObjs) { ckfree((char *) ctxPtr->line); if (pc && (ctxPtr->type == TCL_LOCATION_SOURCE)) { /* * Death of SrcInfo reference. */ Tcl_DecrRefCount(ctxPtr->data.eval.path); } } /* * Generate an error message if necessary. */ if (result == TCL_ERROR) { int limit = 50; int overflow = (patternLength > limit); Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (\"%.*s%s\" arm line %d)", (overflow ? limit : patternLength), pattern, (overflow ? "..." : ""), interp->errorLine)); } TclStackFree(interp, ctxPtr); return result; }  /* *---------------------------------------------------------------------- * * Tcl_TimeObjCmd -- * * This object-based procedure is invoked to process the "time" Tcl * command. See the user documentation for details on what it does. * * Results: * A standard Tcl object result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_TimeObjCmd( 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 *objs[4]; register int i, result; int count; double totalMicroSec; #ifndef TCL_WIDE_CLICKS Tcl_Time start, stop; #else Tcl_WideInt start, stop; #endif if (objc == 2) { count = 1; } else if (objc == 3) { result = TclGetIntFromObj(interp, objv[2], &count); if (result != TCL_OK) { return result; } } else { Tcl_WrongNumArgs(interp, 1, objv, "command ?count?"); return TCL_ERROR; } objPtr = objv[1]; i = count; #ifndef TCL_WIDE_CLICKS Tcl_GetTime(&start); #else start = TclpGetWideClicks(); #endif while (i-- > 0) { result = Tcl_EvalObjEx(interp, objPtr, 0); if (result != TCL_OK) { return result; } } #ifndef TCL_WIDE_CLICKS Tcl_GetTime(&stop); totalMicroSec = ((double) (stop.sec - start.sec)) * 1.0e6 + (stop.usec - start.usec); #else stop = TclpGetWideClicks(); totalMicroSec = ((double) TclpWideClicksToNanoseconds(stop - start))/1.0e3; #endif if (count <= 1) { /* * Use int obj since we know time is not fractional. [Bug 1202178] */ objs[0] = Tcl_NewIntObj((count <= 0) ? 0 : (int) totalMicroSec); } else { objs[0] = Tcl_NewDoubleObj(totalMicroSec/count); } /* * Construct the result as a list because many programs have always parsed * as such (extracting the first element, typically). */ TclNewLiteralStringObj(objs[1], "microseconds"); TclNewLiteralStringObj(objs[2], "per"); TclNewLiteralStringObj(objs[3], "iteration"); Tcl_SetObjResult(interp, Tcl_NewListObj(4, objs)); return TCL_OK; }  /* *---------------------------------------------------------------------- * * Tcl_WhileObjCmd -- * * This procedure is invoked to process the "while" 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 "while" or the name to * which "while" was renamed: e.g., "set z while; $z {$i<100} {}" * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *---------------------------------------------------------------------- */ int Tcl_WhileObjCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { int result, value; Interp *iPtr = (Interp *) interp; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "test command"); return TCL_ERROR; } while (1) { result = Tcl_ExprBooleanObj(interp, objv[1], &value); if (result != TCL_OK) { return result; } if (!value) { break; } /* TIP #280. */ result = TclEvalObjEx(interp, objv[2], 0, iPtr->cmdFramePtr, 2); if ((result != TCL_OK) && (result != TCL_CONTINUE)) { if (result == TCL_ERROR) { Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (\"while\" body line %d)", interp->errorLine)); } break; } } if (result == TCL_BREAK) { result = TCL_OK; } if (result == TCL_OK) { Tcl_ResetResult(interp); } return result; }  /* *---------------------------------------------------------------------- * * TclListLines -- * * ??? * * Results: * Filled in array of line numbers? * * Side effects: * None. * *---------------------------------------------------------------------- */ void TclListLines( CONST char *listStr, /* Pointer to string with list structure. * Assumed to be valid. Assumed to contain n * elements. */ int line, /* Line the list as a whole starts on. */ int n, /* #elements in lines */ int *lines) /* Array of line numbers, to fill. */ { int i, length = strlen(listStr); CONST char *element = NULL, *next = NULL; for (i = 0; i < n; i++) { TclFindElement(NULL, listStr, length, &element, &next, NULL, NULL); TclAdvanceLines(&line, listStr, element); /* Leading whitespace */ lines[i] = line; length -= (next - listStr); TclAdvanceLines(&line, element, next); /* Element */ listStr = next; if (*element == 0) { /* ASSERT i == n */ break; } } }  /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */

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