Difference between revisions of "ReNamer:Scripts:EAN-13"
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(note about codes of any length) |
m (Text replacement - "</source>" to "</syntaxhighlight>") |
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| Line 66: | Line 66: | ||
FileName := BaseName + IntToStr(Checksum) + Ext; | FileName := BaseName + IntToStr(Checksum) + Ext; | ||
end. | end. | ||
| − | </ | + | </syntaxhighlight> |
Revision as of 15:00, 8 February 2017
This script will calculate the checksum digit for the EAN-13 barcode. The checksum digit will be appended to the end of the base name.
Although EAN-13 codes are 13 digits long (12 + check digit) the script will work for codes of any length.
| Input | Output |
|---|---|
| 002010000000.png | 0020100000007.png |
| 002010000001.png | 0020100000014.png |
| 002010000002.png | 0020100000021.png |
| 002010000003.png | 0020100000038.png |
| 007567816412.png | 0075678164125.png |
Tested
- ReNamer 5.50+ Beta
Code
Author: Denis Kozlov. Date: 9 June 2010.
<source> function EAN13Checksum(const EAN13: String): Integer; var
I, Digit: Integer; Odd: Boolean; Sum: Integer;
begin
Sum := 0;
Odd := True;
for I := Length(EAN13) downto 1 do
begin
Digit := StrToIntDef(EAN13[I], 0);
if Odd then
Sum := Sum + Digit * 3
else
Sum := Sum + Digit;
Odd := not Odd;
end;
Result := Sum mod 10;
if Result <> 0 then
Result := 10 - Result;
end;
var
BaseName, Ext: WideString; Checksum: Integer;
begin
BaseName := WideExtractBaseName(FileName); Ext := WideExtractFileExt(FileName); Checksum := EAN13Checksum(BaseName); FileName := BaseName + IntToStr(Checksum) + Ext;
end. </syntaxhighlight>