Matt Sun created CSV-196:
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Summary: Store the info of whether a field is enclosed by quotes
Key: CSV-196
URL: https://issues.apache.org/jira/browse/CSV-196
Project: Commons CSV
Issue Type: Improvement
Components: Parser
Affects Versions: 1.4
Reporter: Matt Sun
Priority: Minor
It will be good to have CSVParser class to store the info of whether a field
was enclosed by quotes in the original source file.
For example, for this data sample:
A, B, C
a1, "b1", c1
CSVParser gives us record a1, b1, c1, which is helpful because it parsed double
quotes, but we also lost the information of original data at the same time. We
can tell from the CSVRecord returned whether the original data is enclosed by
double quotes or not.
In our use case, we are integrating Apache Hadoop APIs with Commons CSV. CSV
is one kind of input of Hadoop, which should splitting input data. To
accurately split a CSV file into pieces, the program needs to count the bytes
of data CSVParser actually read. CSVParser doesn't have accurate information
of whether a field was enclosed by quotes, neither does it store raw data of
the original source. Downstream users of commons CSVParser is not able to get
those info.
To suggest a fix: Extend the token/CSVRecord to have a field indicating whether
the column was enclosed by quotes. While Lexer is doing getNextToken, set the
flag if a field is encapsulated and successfully parsed.
I find another issue reported, but it was marked as resolved: [CSV91]
https://issues.apache.org/jira/browse/CSV-91?jql=project%20%3D%20CSV%20AND%20text%20~%20%22with%20quotes%22
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