#138598 - 2005-04-25 05:12 AM
Segment a string into variable length segments
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Radimus
Moderator
Registered: 2000-01-06
Posts: 5187
Loc: Tampa, FL
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I am trying to take a string that may be 200-500 characters long and break it into segments that are no more that 80 characters long.
however, the point of segmenting must be on a comma, so it will have to be smart enough to find the closest comma <80 characters in the string.
I will also be concatenating the string with '\'+@crlf+' '
basically, I am reading the reg of a REG_EXPAND_SZ type value and converting it into a format identical to regedit export.
Code:
%USERPROFILE%\Local Settings\Temp
into
"TMP"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,00,\
45,00,25,00,5c,00,4c,00,6f,00,63,00,61,00,6c,00,20,00,53,00,65,00,74,00,74,\
00,69,00,6e,00,67,00,73,00,5c,00,54,00,65,00,6d,00,70,00,00,00
I already have bryce's Function RegASCIItoHEX() to convert the readvalue() into the hex string, I need to break it to add the '/' + @crlf
TIA
Edited by Radimus (2005-04-25 05:15 AM)
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#138599 - 2005-04-25 10:20 AM
Re: Segment a string into variable length segments
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Richard H.
Administrator
Registered: 2000-01-24
Posts: 4946
Loc: Leatherhead, Surrey, UK
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It's not as tricky as it sounds, thanks to InStrRev().
This UDF will return a array of the string broken at the delimiter before the required length.
Both delimiter and length are option and default to "," and 80 respectively.
If you pass a blank string you will get an array back with a single blank element.
If there is not a delimiter within the specified length then the string is split at the first available delimiter.
Code:
Function ChopString($s,Optional $l, Optional $d)
Dim $i
; Handle optional parameters
$l=CInt($l)
If Not $l $l=80 EndIf
If $d="" $d="," EndIf
; Deal with null strings
If $s="" Redim Preserve $ChopString[0] Exit 0 EndIf
; Break out long string lengths
While Len($s)>$l
$i=InStrRev(Left($s,$l),$d)
If $i<0 $i=InStr($s,$d) EndIf
Redim Preserve $ChopString[UBound($ChopString)+1]
$ChopString[UBound($ChopString)]=Left($s,$i)
$s=SubStr($s,$i+1)
Loop
; Grab what's left of the string
If $s<>""
Redim Preserve $ChopString[UBound($ChopString)+1]
$ChopString[UBound($ChopString)]=Left($s,$i)
EndIf
Exit 0
EndFunction
Parameters:
- $s = String to split
- $l = Maximum length of parts (Optional, default=80)
- $d = Delimiter to break on (Optional, default=",")
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#138600 - 2005-04-25 12:48 PM
Re: Segment a string into variable length segments
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Radimus
Moderator
Registered: 2000-01-06
Posts: 5187
Loc: Tampa, FL
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#138601 - 2005-04-25 02:27 PM
Re: Segment a string into variable length segments
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Richard H.
Administrator
Registered: 2000-01-24
Posts: 4946
Loc: Leatherhead, Surrey, UK
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Oops!
Cut'n'paste typo in the bit of code handling the remaining string.
Code should be:
Code:
Function ChopString($s,Optional $l, Optional $d)
Dim $i
; Handle optional parameters
$l=CInt($l)
If Not $l $l=80 EndIf
If $d="" $d="," EndIf
; Deal with null strings
If $s="" Redim Preserve $ChopString[0] Exit 0 EndIf
; Break out long string lengths
While Len($s)>$l
$i=InStrRev(Left($s,$l),$d)
If $i<0 $i=InStr($s,$d) EndIf
Redim Preserve $ChopString[UBound($ChopString)+1]
$ChopString[UBound($ChopString)]=Left($s,$i)
$s=SubStr($s,$i+1)
Loop
; Grab what's left of the string
If $s<>""
Redim Preserve $ChopString[UBound($ChopString)+1]
$ChopString[UBound($ChopString)]=$s
EndIf
Exit 0
EndFunction
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