Regex and parenthesis problem

[danny88]

hi
I have this text :

Code: Select all

<input type="text" name="tiersForm.cin" value="C314769" id="tiersForm.cin" class="text_field" onclick="javascript:initActionTiers();" onchange="javascript:doPublish(\'ihmTiers\'); return false;">

The following regex should return C314769 but it returns <input type="text" name="tiersForm.cin" value="C314769"

Code: Select all

REGEX : <input[^>]*name="tiersForm\.cin"[^>]*value="([A-Z]\d+)"

What is wrong ? Thanks

Here is my code :

Code: Select all

regex.s = ~"<input[^>]*name=\"tiersForm\\.cin\"[^>]*value=\"([A-Z]\\d+)\""
ReadFile(0, "test.htm")
text.s = ReadString(0, #PB_File_IgnoreEOL)
CloseFile(0)

If CreateRegularExpression(0, regex)
  Dim Result$(0)  
  NbResults = ExtractRegularExpression(0, text, result$())
  Debug "Nb matchs found: " + NbResults
  For i = 0 To NbResults - 1
    Debug Result$(i)
  Next
Else
  MessageRequester("Error", RegularExpressionError())
EndIf

[spikey]

You need a non-capturing group and a capturing group, by default you get a capturing expression. The non-capturing group to match the pre- and post- amble and the capturing group to get the text you want. You can define a non-capturing group by prefixing ?: (question mark, colon).
Try:

Code: Select all

(?:<input[^>]*name="tiersForm\.cin"[^>]*value=")([A-Z]\d+)(?:")

[danny88]

same result

[danny88]

You need a non-capturing group and a capturing group, by default you get a capturing expression. The non-capturing group to match the pre- and post- amble and the capturing group to get the text you want. You can define a non-capturing group by prefixing ?: (question mark, colon).
Try:

Code: Select all

(?:<input[^>]*name="tiersForm\.cin"[^>]*value=")([A-Z]\d+)(?:")

same result

[DarkDragon]

RegularExpressionGroup(#RegularExpression, 1)

0 is always everything
1 is first parenthesis
...
https://www.purebasic.com/documentation ... group.html

[spikey]

same result

Weird, that should work (but I have to admit, I didn't test it - it was dinner time!) Try this:

Code: Select all

regex.s = "(<input[^>]*name=" + #DQUOTE$ + "tiersForm\.cin" + #DQUOTE$ + "[^>]*value=" + #DQUOTE$ + ")([A-Z]\d+)(" + #DQUOTE$ + ")"
Debug regex

text.s = "<input type=" + #DQUOTE$ + "text" + #DQUOTE$ + "name=" + #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "value=" + #DQUOTE$ + "C314769" + #DQUOTE$ + 
         "id="+ #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "class="+ #DQUOTE$ + "text_field" + #DQUOTE$ + "onclick="+ #DQUOTE$ + "javascript:initActionTiers();" + #DQUOTE$ + 
         "onchange="+ #DQUOTE$ + "javascript:doPublish(\'ihmTiers\'); return false;"+ #DQUOTE$ + ">"

If CreateRegularExpression(0, regex)
  If ExamineRegularExpression(0, text)
    Debug CountRegularExpressionGroups(0)
    NextRegularExpressionMatch(0)
    Debug RegularExpressionGroup(0, 2)
  EndIf
Else
  Debug RegularExpressionError()
EndIf

[danny88]

RegularExpressionGroup(#RegularExpression, 1)

0 is always everything
1 is first parenthesis
...
https://www.purebasic.com/documentation ... group.html

works. thanks

[danny88]

same result

Weird, that should work (but I have to admit, I didn't test it - it was dinner time!) Try this:

Code: Select all

regex.s = "(<input[^>]*name=" + #DQUOTE$ + "tiersForm\.cin" + #DQUOTE$ + "[^>]*value=" + #DQUOTE$ + ")([A-Z]\d+)(" + #DQUOTE$ + ")"
Debug regex

text.s = "<input type=" + #DQUOTE$ + "text" + #DQUOTE$ + "name=" + #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "value=" + #DQUOTE$ + "C314769" + #DQUOTE$ + 
         "id="+ #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "class="+ #DQUOTE$ + "text_field" + #DQUOTE$ + "onclick="+ #DQUOTE$ + "javascript:initActionTiers();" + #DQUOTE$ + 
         "onchange="+ #DQUOTE$ + "javascript:doPublish(\'ihmTiers\'); return false;"+ #DQUOTE$ + ">"

If CreateRegularExpression(0, regex)
  If ExamineRegularExpression(0, text)
    Debug CountRegularExpressionGroups(0)
    NextRegularExpressionMatch(0)
    Debug RegularExpressionGroup(0, 2)
  EndIf
Else
  Debug RegularExpressionError()
EndIf

works. thanks

[AZJIO]

Code: Select all

regex.s = "<input[^>]*name=" + #DQUOTE$ + "tiersForm\.cin" + #DQUOTE$ + "[^>]*value=" + #DQUOTE$ + "([A-Z]\d+)" + #DQUOTE$ + ""
Debug regex

text.s = "<input type=" + #DQUOTE$ + "text" + #DQUOTE$ + "name=" + #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "value=" + #DQUOTE$ + "C314769" + #DQUOTE$ + 
         "id="+ #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "class="+ #DQUOTE$ + "text_field" + #DQUOTE$ + "onclick="+ #DQUOTE$ + "javascript:initActionTiers();" + #DQUOTE$ + 
         "onchange="+ #DQUOTE$ + "javascript:doPublish(\'ihmTiers\'); return false;"+ #DQUOTE$ + ">"

If CreateRegularExpression(0, regex)
  If ExamineRegularExpression(0, text)
    Debug CountRegularExpressionGroups(0)
    NextRegularExpressionMatch(0)
    Debug RegularExpressionGroup(0, 1)
  EndIf
Else
  Debug RegularExpressionError()
EndIf

.

Code: Select all

regex.s = ~"<input[^>]*name=\"tiersForm\\.cin\"[^>]*value=\"\\K([A-Z]\\d+)(?=\")"

text.s = "<input type=" + #DQUOTE$ + "text" + #DQUOTE$ + "name=" + #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "value=" + #DQUOTE$ + "C314769" + #DQUOTE$ + 
         "id="+ #DQUOTE$ + "tiersForm.cin" + #DQUOTE$ + "class="+ #DQUOTE$ + "text_field" + #DQUOTE$ + "onclick="+ #DQUOTE$ + "javascript:initActionTiers();" + #DQUOTE$ + 
         "onchange="+ #DQUOTE$ + "javascript:doPublish(\'ihmTiers\'); return false;"+ #DQUOTE$ + ">"

If CreateRegularExpression(0, regex)
  Dim Result$(0)  
  NbResults = ExtractRegularExpression(0, text, result$())
  Debug "Nb matchs found: " + NbResults
  For i = 0 To NbResults - 1
    Debug Result$(i)
  Next
Else
  MessageRequester("Error", RegularExpressionError())
EndIf