[
https://issues.apache.org/jira/browse/CSV-288?focusedWorklogId=727617&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-727617
]
ASF GitHub Bot logged work on CSV-288:
--------------------------------------
Author: ASF GitHub Bot
Created on: 15/Feb/22 19:05
Start Date: 15/Feb/22 19:05
Worklog Time Spent: 10m
Work Description: angusdev opened a new pull request #216:
URL: https://github.com/apache/commons-csv/pull/216
Jira Issue: https://issues.apache.org/jira/browse/CSV-288
When checking if last token is delimiter in below line of code
```java
// did we reach eof during the last iteration already ? EOF
if (isEndOfFile(lastChar) || !isDelimiter(lastChar) && isEndOfFile(c)) {
```
`isDelimiter(lastChar)` unintentionally advance the buffer pointer and
consume the first `"|"` when it comes to the `"b"` in `"a||b||c"` (lastChar is
`"|"`, nextChar is also `"|"`, make it `"||"`). Subsequent read will see `"|c"`
instead of `"||c"` so the second token is `"b|c"`
To fix it, create a new indicator `isLastTokenDelimiter` instead of using
`isDelimiter(lastChar)`, the indicator is set/reset in `isDelimiter()`
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Issue Time Tracking
-------------------
Worklog Id: (was: 727617)
Time Spent: 20m (was: 10m)
> String delimiter (||) is not working as expected.
> -------------------------------------------------
>
> Key: CSV-288
> URL: https://issues.apache.org/jira/browse/CSV-288
> Project: Commons CSV
> Issue Type: Bug
> Reporter: Santhsoh
> Priority: Major
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Steps to reproduce :
> 1. Parse CSV file with || as delimiter and having empty columns
> 2. Print the CSVRecord resulting from CSVParser
>
> //Expected : a,b,c,d,,f,g
> // Actual : a,b|c,d,|f,g
> public static void main(String[] args) throws Exception\{
> String row = "a||b||c||d||||f||g";
> StringBuilder stringBuilder = new StringBuilder();
> try (CSVPrinter csvPrinter = new CSVPrinter(stringBuilder,
> CSVFormat.EXCEL);
> CSVParser csvParser = CSVParser.parse(new StringInputStream(row),
> StandardCharsets.UTF_8,
> CSVFormat.Builder.create().setDelimiter("||").build())) {
> for (CSVRecord csvRecord : csvParser) {
> for (int i = 0; i < csvRecord.size(); i++) {
> csvPrinter.print(csvRecord.get(i));
> }
> System.out.println(stringBuilder.toString());
> //Expected : a,b,c,d,,f,g
> // Actual : a,b|c,d,|f,g
> }
> }
> }
> With the snippet provided above, actual value is not same as expected value
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