Chiitus

Regex date

16 posts in this topic

#1 ·  Posted (edited)

Hello guys, i have a problem in this regex because its not groupping right.

Look:

(\d{1,2}\s?[\055|\056|\057|\134]\s?\d{1,2}(\s?[\055|\056|\057|\134]\s?\d{2,4})?)

It checks for day or dayday, month or monthmonth, yearyear or yearyearyear+year.

separated with or without space and the characters "\/.-"

But, a problem! I tried to regex the date with or without the "separator + year" Eg: 05/05 or 05/05/05, but when i have 05/05/05, regex are separating 05/05 and /05

Iam using group "()" wrong?

Need help here :D

Thx adv!

~~EDIT:

Script used: (from autoitscript.com/forum/topic/129697-split-string-by-regular-expression/#comment-901335)

#include <Array.au3>

Local $sString = ClipGet()

; Extract the delimiters
$aDelim = StringRegExp($sString, '(\d{1,2}\s?[\055|\056|\057|\134]\s?\d{1,2}(\s?[\055|\056|\057|\134]\s?\d{2,4})?)', 3)

; Split the string on the delimiters
$aParts = StringSplit(StringRegExpReplace($sString, '(\d{1,2}\s?[\055|\056|\057|\134]\s?\d{1,2}(\s?[\055|\056|\057|\134]\s?\d{2,4})?)', "$<SEPARATOR>$"), "$<SEPARATOR>$", 3)

; Add the delimter to the start of the part
For $i = 0 To UBound($aParts) - 1
   ;$aParts[$i + 1] = $aDelim[$i] & $aParts[$i + 1]
Next

; Set the count
$aParts[0] = UBound($aParts)

; Display the result
_ArrayDisplay($aParts)
_ArrayDisplay($aDelim)

Results in array: (the array parts in all string is ok; but the string delimitator himself is getting separated in every string that have year together)

temp.png

String used as test:

Quote

02 / 9 \ 16 – test

07 - 9 . 16 – test

09/9/16 – test

14\9\16 – test

16-9-16 – test


21.9.16 – test


23/9 – test


28\9 – test

Cheers.

Edited by Chiitus

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It helps when you post a small script that demonstrates the issue, so we can have a play with it.

Jos


Visit the SciTE4AutoIt3 Download page for the latest versions        Beta files                                                          Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)

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2 hours ago, Jos said:

It helps when you post a small script that demonstrates the issue, so we can have a play with it.

Jos

Topic edited!

Thanks for the info :D

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#4 ·  Posted (edited)

3 hours ago, Chiitus said:

Local $sString = ClipGet()

What about the string to test with?

Ok copied your test data into a file to make life easy.

Jos

Edited by Jos

Visit the SciTE4AutoIt3 Download page for the latest versions        Beta files                                                          Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)

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#6 ·  Posted (edited)

12 minutes ago, jguinch said:

are you sure that the pattern [\055|\056|\057|\134] matches what you expect ? https://regex101.com/r/zQ5xY4/1

 

It match "\/.-" one of these chars. But in this link you posted, regex are founding char "|", isnt this char a "OR" operator in regex?

EDIT: From AutoIt regex tutorial link: codeproject.com/Articles/9099/The-Minute-Regex-Tutorial;

\xxx ~> Character ASCII octal code.

Edited by Chiitus

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I find it rare that people use octal nowadays, in regexp patterns or elsewhere.

1 person likes this

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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Inside a character class, the bar | doesn't mean alternation, it stands for itself (redondantly here).


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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But one question remains: what format do you want the final result to be?


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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#10 ·  Posted

If you do not want the delimliter and year only to be specifically matched then make that part of the RE pattern a non-capturing group.
See example.

#include <Array.au3>

Local $sString = StringRegExpReplace(FileRead(@ScriptFullPath), "(?is)^.*#cs\R|\R?#ce.*$", "") ; ClipGet()
ConsoleWrite($sString & @CRLF)

$a = StringRegExp($sString, "((?:[0-9]{1,2}[\h\-\\/.]{0,3}){2,3})", 3)
_ArrayDisplay($a)

; Modified $aDelim from Post#1
$aDelim = StringRegExp($sString, '(\d{1,2}\s?[\055|\056|\057|\134]\s?\d{1,2}(?:\s?[\055|\056|\057|\134]\s?\d{2,4})?)', 3)
; Note addition of "?:" in the RegExp pattern in the line above here~~~~~~~~~^
_ArrayDisplay($aDelim, "$aDelim")

; Data for variable $sString - Copied from Post#1
#cs

02 / 9 \ 16 – test

07 - 9 . 16 – test

09/9/16 – test

14\9\16 – test

16-9-16 – test


21.9.16 – test


23/9 – test


28\9 – test

#ce

 

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#12 ·  Posted

This works also. Sort of.

#include <array.au3>
Local $date = "01.12\1967"  ; test data

Local $a = StringRegExp ( $date, "\d{1,2}\s?[-/\.\\]\s?\d{1,2}\s?[-/\.\\]\s?\d{2,4}", 3)
_ArrayDisplay($a)

 

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#13 ·  Posted

23 hours ago, jchd said:

But one question remains: what format do you want the final result to be?

Ya, octal was stupid move, i changed to char himself. Thx!

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#14 ·  Posted

15 hours ago, Malkey said:

If you do not want the delimliter and year only to be specifically matched then make that part of the RE pattern a non-capturing group.
See example.

#include <Array.au3>

Local $sString = StringRegExpReplace(FileRead(@ScriptFullPath), "(?is)^.*#cs\R|\R?#ce.*$", "") ; ClipGet()
ConsoleWrite($sString & @CRLF)

$a = StringRegExp($sString, "((?:[0-9]{1,2}[\h\-\\/.]{0,3}){2,3})", 3)
_ArrayDisplay($a)

; Modified $aDelim from Post#1
$aDelim = StringRegExp($sString, '(\d{1,2}\s?[\055|\056|\057|\134]\s?\d{1,2}(?:\s?[\055|\056|\057|\134]\s?\d{2,4})?)', 3)
; Note addition of "?:" in the RegExp pattern in the line above here~~~~~~~~~^
_ArrayDisplay($aDelim, "$aDelim")

; Data for variable $sString - Copied from Post#1
#cs

02 / 9 \ 16 – test

07 - 9 . 16 – test

09/9/16 – test

14\9\16 – test

16-9-16 – test


21.9.16 – test


23/9 – test


28\9 – test

#ce

 

Worked like a charm!!

Thank you!!!

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#15 ·  Posted

9 hours ago, pluto41 said:

This works also. Sort of.

#include <array.au3>
Local $date = "01.12\1967"  ; test data

Local $a = StringRegExp ( $date, "\d{1,2}\s?[-/\.\\]\s?\d{1,2}\s?[-/\.\\]\s?\d{2,4}", 3)
_ArrayDisplay($a)

 

Not testes, but thanks anyway!!

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#16 ·  Posted (edited)

How can i mark as solved this topic?

Amazing forum guys, thanks for the help!!!

 

~~EDIT:

I did a improve in the regex code.

Now check for a valid day (0-31; dont check by month) and check a valid month (1-12).

Including leading zero.

Check it out:

$aDelim = StringRegExp($texto, '((?:\n0[1-9]\s?[|\\/.-]\s?\b(?:0[1-9]|[1-9]|1[1-2])\b|\n[1-9]\s?[|\\/.-]\s?\b(?:0[1-9]|[1-9]|1[1-2])\b|\n[1-2][0-9]\s?[|\\/.-]\s?\b(?:0[1-9]|[1-9]|1[1-2])\b|\n3[0-1]\s?[|\\/.-]\s?\b(?:0[1-9]|[1-9]|1[1-2])\b)(?:\s?[|\\/.-]\s?\d{2,4})?)', 3)

 

Edited by Chiitus

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