Rodger Posted August 4, 2014 Share Posted August 4, 2014 Hello, I have the following code: #include <StringConstants.au3> #include <Array.au3> $String = "öZaanïdam" $SearchPattern = "?Zaan?dam" ; String $String = StringStripWS($String,$STR_STRIPLEADING + $STR_STRIPTRAILING) $String = StringReplace($String,".",".",0,1) $String = StringReplace($String,"","",0,1) ;$SearchPattern $SearchPattern = StringReplace($SearchPattern,"?",".",0,1) If StringMid($SearchPattern,1,1) = "*" Then $SearchPattern = StringReplace($SearchPattern,"*","<*.+",1,1) EndIf If StringMid($SearchPattern,StringLen($SearchPattern),1) = "*" Then $SearchPattern = StringReplace($SearchPattern,"*",">*.+",-1,1) EndIf If StringRegExp($String,"b" & $SearchPattern & "b",0) Then ;Matched $MatchedArray = StringRegExp($String,"b" & $SearchPattern & "b",1) _ArrayDisplay($MatchedArray) EndIf Exit Can somebody explained to me why there isn't a match when using an extended ASCII character as the first character and how I can solve this ? Below matches without a problem $String = "xZaanïdam" $SearchPattern = "?Zaan?dam" Link to comment Share on other sites More sharing options...
jchd Posted August 4, 2014 Share Posted August 4, 2014 Please use AutoIt code tags to enclose code, it makes it easier to read. The issue is with your use of the b assertion in default (non UCP) mode. b internally translates into a test whether "the current point is between characters not both w or W. See w for the meaning of "word". Refer to the documentation for what w actually means to see the root cause of the behavior you observe. If you want to see your last test to even match (contrary to the commentary found there), you must use the UCP mode with b, like this: If StringRegExp($String,"(*UCP)\b" & $SearchPattern & "\b",0) Then ;Matched $MatchedArray = StringRegExp($String,"(*UCP)\b" & $SearchPattern & "\b",1) _ArrayDisplay($MatchedArray) EndIf . This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe hereRegExp tutorial: enough to get startedPCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta. SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt) Link to comment Share on other sites More sharing options...
Rodger Posted August 4, 2014 Author Share Posted August 4, 2014 (edited) Thank you jchd, it's working. Sorry about the code, I will use the autoIt code tag next time. Another small question: How about things like this: $String = "#Zaanïdam" Or $String = "-Zaanïdam" So using some of the "reserved" characters of RE itself ? #include <StringConstants.au3> #include <Array.au3> $String = "#Zaanïdam" $SearchPattern = "?Zaan?dam" ; String $String = StringStripWS($String,$STR_STRIPLEADING + $STR_STRIPTRAILING) $String = StringReplace($String,".","\.",0,1) $String = StringReplace($String,"\","\\",0,1) ;$SearchPattern $SearchPattern = StringReplace($SearchPattern,"?",".",0,1) If StringMid($SearchPattern,1,1) = "*" Then $SearchPattern = StringReplace($SearchPattern,"*","<*.+",1,1) EndIf If StringMid($SearchPattern,StringLen($SearchPattern),1) = "*" Then $SearchPattern = StringReplace($SearchPattern,"*",">*.+",-1,1) EndIf If StringRegExp($String,"(*UCP)\b" & $SearchPattern & "\b",0) Then ;Matched $MatchedArray = StringRegExp($String,"(*UCP)\b" & $SearchPattern & "\b",1) _ArrayDisplay($MatchedArray) EndIf Exit Edited August 4, 2014 by Rodger Link to comment Share on other sites More sharing options...
jchd Posted August 4, 2014 Share Posted August 4, 2014 (edited) The pattern used in your regexp is now "(*UCP)b.Zaan.damb" after the initial transformation of your search pattern. Applied to the subject string "#Zaanïdam" it doesn't match. To see that, remember the definition of b assertion: it means "non-word character followed by word character", word character being taken in the Unicode sense. Because neither # (first subject) or - (second subject) are not word character and are at the beginning of both subjects, the actual condition is W (preceeding char is not present so it is "non-word") followed by non-word (# or -). So the first char in subject doesn't match b. The engine now tries at the next char in subject: Z is actually satisfying the b assertion. The engine proceeds now with the first dot in the pattern and matches it with the next char in subject, a. But next, the following char of the pattern Z doesn't match the second a in the subject. so the match fails. In fact and because PCRE applies pattern optimizations, the engine returns a failure right after seeing that b doesn't match, as it knows that the pattern can't match because the length of the pattern is the same as the length of the subject, so failure is definitive after the first non-match which implies bumping the matching point in the subject. You can see the effect of the sorter pattern "b." on those subject strings: $MatchedArray = StringRegExp("#Zaanïdam", "(*UCP)\b.", 1) _ArrayDisplay($MatchedArray) I warmly recommend trying patterns with the excellent Online regex tester and debugger which features a regexp debugger showing you how the engine behaves step by step, should you need it. Don't forget to select the PCRE flavor to obtain results applicable to AutoIt. Study the lengthy presentation in the StingRegExp() help and, if you need more complete specifications, dig into the official PCRE documentation (link below). I tried hard to make our help both concise and extensive but these are antagonistic goals and simply pasting the full PCRE pattern doc would repel beginners. Anyway, regexps are not always as sipmple as they may look, at least until you try them on real-world data! Edited August 4, 2014 by jchd This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe hereRegExp tutorial: enough to get startedPCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta. SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt) Link to comment Share on other sites More sharing options...
guinness Posted August 4, 2014 Share Posted August 4, 2014 Study the lengthy presentation in the StingRegExp() helpCome on, don't be modest, you wrote it. -_0 UDF List: _AdapterConnections() • _AlwaysRun() • _AppMon() • _AppMonEx() • _ArrayFilter/_ArrayReduce • _BinaryBin() • _CheckMsgBox() • _CmdLineRaw() • _ContextMenu() • _ConvertLHWebColor()/_ConvertSHWebColor() • _DesktopDimensions() • _DisplayPassword() • _DotNet_Load()/_DotNet_Unload() • _Fibonacci() • _FileCompare() • _FileCompareContents() • _FileNameByHandle() • _FilePrefix/SRE() • _FindInFile() • _GetBackgroundColor()/_SetBackgroundColor() • _GetConrolID() • _GetCtrlClass() • _GetDirectoryFormat() • _GetDriveMediaType() • _GetFilename()/_GetFilenameExt() • _GetHardwareID() • _GetIP() • _GetIP_Country() • _GetOSLanguage() • _GetSavedSource() • _GetStringSize() • _GetSystemPaths() • _GetURLImage() • _GIFImage() • _GoogleWeather() • _GUICtrlCreateGroup() • _GUICtrlListBox_CreateArray() • _GUICtrlListView_CreateArray() • _GUICtrlListView_SaveCSV() • _GUICtrlListView_SaveHTML() • _GUICtrlListView_SaveTxt() • _GUICtrlListView_SaveXML() • _GUICtrlMenu_Recent() • _GUICtrlMenu_SetItemImage() • _GUICtrlTreeView_CreateArray() • _GUIDisable() • _GUIImageList_SetIconFromHandle() • _GUIRegisterMsg() • _GUISetIcon() • _Icon_Clear()/_Icon_Set() • _IdleTime() • _InetGet() • _InetGetGUI() • _InetGetProgress() • _IPDetails() • _IsFileOlder() • _IsGUID() • _IsHex() • _IsPalindrome() • _IsRegKey() • _IsStringRegExp() • _IsSystemDrive() • _IsUPX() • _IsValidType() • _IsWebColor() • _Language() • _Log() • _MicrosoftInternetConnectivity() • _MSDNDataType() • _PathFull/GetRelative/Split() • _PathSplitEx() • _PrintFromArray() • _ProgressSetMarquee() • _ReDim() • _RockPaperScissors()/_RockPaperScissorsLizardSpock() • _ScrollingCredits • _SelfDelete() • _SelfRename() • _SelfUpdate() • _SendTo() • _ShellAll() • _ShellFile() • _ShellFolder() • _SingletonHWID() • _SingletonPID() • _Startup() • _StringCompact() • _StringIsValid() • _StringRegExpMetaCharacters() • _StringReplaceWholeWord() • _StringStripChars() • _Temperature() • _TrialPeriod() • _UKToUSDate()/_USToUKDate() • _WinAPI_Create_CTL_CODE() • _WinAPI_CreateGUID() • _WMIDateStringToDate()/_DateToWMIDateString() • Au3 script parsing • AutoIt Search • AutoIt3 Portable • AutoIt3WrapperToPragma • AutoItWinGetTitle()/AutoItWinSetTitle() • Coding • DirToHTML5 • FileInstallr • FileReadLastChars() • GeoIP database • GUI - Only Close Button • GUI Examples • GUICtrlDeleteImage() • GUICtrlGetBkColor() • GUICtrlGetStyle() • GUIEvents • GUIGetBkColor() • Int_Parse() & Int_TryParse() • IsISBN() • LockFile() • Mapping CtrlIDs • OOP in AutoIt • ParseHeadersToSciTE() • PasswordValid • PasteBin • Posts Per Day • PreExpand • Protect Globals • Queue() • Resource Update • ResourcesEx • SciTE Jump • Settings INI • SHELLHOOK • Shunting-Yard • Signature Creator • Stack() • Stopwatch() • StringAddLF()/StringStripLF() • StringEOLToCRLF() • VSCROLL • WM_COPYDATA • More Examples... Updated: 22/04/2018 Link to comment Share on other sites More sharing options...
jchd Posted August 4, 2014 Share Posted August 4, 2014 That's why I said that being something between a quick-ref and the full doc, it forcibly leaves some aspects unclear. That's the price to pay for such tradeoff. It's nonetheless always enlightnening to observe what newcommers have issues understanding. I'm open to amending phrasing or adding some required details. This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe hereRegExp tutorial: enough to get startedPCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta. SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt) Link to comment Share on other sites More sharing options...
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