PureNewb

A little bit help for advanced search with StringinStr?

13 posts in this topic

Hello,as you can see its my first post and really there is reason for that.

The fact:

I have a very big file with ~2.050.000 lines and seems like that:

Line_1)aaa,1

Line_2)aaa,2

.....

Line_1000)bbb,1 #cs every 1000 lines the first part of starting chars changed #ce

Line_1001)bbb,2

Line_1002)bbb,1

.....

Line_2000)ccc,1

The problem is that search with StringinStr line by line is very slow(~8 millisec).

i need to search for the first part(aaa/ bbb/ccc)  and when i find it,then search from that position for the sec part of search(1,2...999).
i was thinking to make a search every 1000lines and when reached my search then continue from that line for sec search but StringinStr doesnt return the line num
and any other way its counting the @CRLF to count the lines for return value so its not suits in my case.

i hope to be clear.
 

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Looks like a regexp could do, but without specifics it's hard to advise.

 


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 here
RegExp tutorial: enough to get started
PCRE 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)

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#3 ·  Posted (edited)

38 minutes ago, jchd said:

Looks like a regexp could do, but without specifics it's hard to advise.

 

ok lets say that file seems

September,1
September,2
September,3
September,4
September,5
September,6
September,7
September,8
September,9
September,10
September,11
September,12
September,13
September,14
September,15
September,16
September,17
September,18
September,19
September,20
September,21
September,22
September,23
September,24
September,25
September,26
September,27
September,28
September,29
September,30
October,1
October,2
October,3
October,4
October,5
October,6
October,7
October,8
October,9
October,10
October,11
October,12
October,13
October,14
October,15
October,16
October,17
October,18
October,19
October,20
October,21
October,22
October,23
October,24
October,25
October,26
October,27
October,28
October,29
October,30
November,1
November,2
November,3
November,4
November,5
November,6
November,7
November,8
November,9
November,10
November,11
November,12
November,13
November,14
November,15
November,16
November,17
November,18
November,19
November,20
November,21
November,22
November,23
November,24
November,25
November,26
November,27
November,28
November,29
November,30

how can you search efficient with StringRegExp?
 

Edited by Melba23
Added tags

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lets say that i need to find "October,5",i think that instead of search line by line for "October,5" i could search every 30 line for "October" and after that ,search inside the lines of "October" for ",5".But how can i do that?

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"Search" is a little vague.

Do you want to know whether the search string can be found? Or the offset it can be found? Or from there on lookup something else 7 lines after it?


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 here
RegExp tutorial: enough to get started
PCRE 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)

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14 hours ago, jchd said:

"Search" is a little vague.

Do you want to know whether the search string can be found? Or the offset it can be found? Or from there on lookup something else 7 lines after it?

Global $SRHC1, $SRHC2, $file, $hFile, $sLine
    $SRHC1 = "October,"
    $SRHC2 = "5"
    $file = "C:\Months.txt"
    $hFile = FileOpen($file)
search1()
Func search1()

    ;lookup 30 lines after if not found in first line,but i dont know how to do that yet maybe for $a=0 to 30?
    While 1
        $sLine = FileReadLine($hFile)
        If @error = -1 Then ExitLoop
        If StringRegExp($sLine, $SRHC1) Then
            ;Return the number of $SRHC1 line in order to searh from that line down for $SRHC2
            ConsoleWrite( $sLine)
            Search2()
            ExitLoop
        EndIf
    WEnd
EndFunc   ;==>search1

Func Search2()
    While 1
        If @error = -1 Then ExitLoop
        ;Go on the return line number to start find the $SRHC2
        If StringRegExp($sLine, $SRHC2) Then
            ConsoleWrite( $sLine)
            ExitLoop
        EndIf
    WEnd
    FileClose($hFile)
EndFunc   ;==>Search2

 

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If there are only 2,000,000 lines, read the entire file into an array with FileReadToArray and search the array (much much faster) instead of the file.

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#9 ·  Posted (edited)

2 hours ago, LarsJ said:

If there are only 2,000,000 lines, read the entire file into an array with FileReadToArray and search the array (much much faster) instead of the file.

thanks for your reply,im trying to do that but it tooks  much more time (27.4 sec),is that possible or im doing something wrong?

basicaly it write in console 13 times what i need and i need just 1

 

#include <File.au3>

Global $aFile[0], $SRHC1, $SRHC2, $Remark2, $set11, $set12
$SRHC1 = "October,"
$SRHC2 = "5"
_FileReadToArray("C:\Months.txt", $aFile)


For $i = 0 To $aFile[0]

    If StringInStr($aFile[$i], $SRHC1 & $SRHC2) Then

        $Remark2 = StringSplit($aFile[$i], ",")
        For $a = 0 To $Remark2[0]

            $set11 = Round($Remark2[11], 1)
            $set12 = Round($Remark2[12], 1)

            ConsoleWrite($set11 & @CRLF)
            ConsoleWrite($set12 & @CRLF)
        Next
    EndIf
Next
FileClose($aFile)

 

Months.txt

Edited by PureNewb

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#11 ·  Posted (edited)

1 hour ago, LarsJ said:

I'm talking about FileReadToArray (without an underscore). Not _FileReadToArray (with an underscore).

aha ok,Thanks!

 

 

 

Edited by PureNewb

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PureNewb,

Based strictly on the detail (or lack thereof) of your request...

Local $sSrchArg = 'October,5'
Local $sInfile = @ScriptDir & '\months.txt'

If StringInStr(FileRead($sInfile), $sSrchArg) Then ConsoleWrite('Search argument found' & @CRLF)

kylomas


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#13 ·  Posted

Hello,

 

that looks like some log file processing?

Maybe you could alter the way the "timestamp" is modified when that file is created to something like

 

2017-10-01 (instead of October,1)

 

or

 

20171001

 

That would make it much easier to dig into the file's content, as you want to do.

 

Regards, Rudi.

 

 


Earth is flat, pigs can fly, and Nuclear Power is SAFE!

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