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[DCSV-5] No option for parsing into maps Created: 21/May/13  Updated: 21/May/13

Status: Open
Project: data.csv
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Enhancement Priority: Major
Reporter: Gary Fredericks Assignee: Jonas Enlund
Resolution: Unresolved Votes: 0
Labels: None


 Description   

I imagine a very common use case for parsing CSVs is to get the output as a sequence of maps. I'm happy to provide a patch for this but wanted to make sure I had the right design.

My initial idea is to add another option to read-csv with the name :headers which can be a sequence of values, or a flag such as :first-row. Presumably though we ought to also support using the first row as keywords rather than strings, so I'm not sure whether that ought to be another option or a different flag (e.g., :first-row-keywords).



 Comments   
Comment by Jonas Enlund [ 21/May/13 1:28 PM ]

I've seen this feature request before so I think that something like this should be added. One approach would be to provide a helper function:

(defn csv-data->maps [vecs]
  (map zipmap (repeat (first vecs)) (rest vecs)))

(csv-data->maps (read-csv reader))




[DCSV-4] \return as record separator with unquoted fields is read as part of the field Created: 24/Oct/12  Updated: 24/Oct/12

Status: Open
Project: data.csv
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Defect Priority: Major
Reporter: John Hume Assignee: Jonas Enlund
Resolution: Unresolved Votes: 0
Labels: None


 Description   

This regards the gray area of being "more forgiving." If I understand RFC 4180 correctly, I want to suggest substituting one bit of forgiveness for another: rather than supporting unquoted, multi-line cell values, I suggest supporting CSVs with just \return as the record-separator. Would you accept a patch for that?

A file with \return as record-separator is interpreted by read-csv as a single row like (["Header1" "Header2\rval1" "val2"]). I believe the RFC only allows fields to contain CR and LF when they're escaped (i.e., surrounded in double quotes). See the ABNF at the end of section 2.

As far as implementation, I believe this would require wrapping any Reader w/o markSupported in one that does, so that the LF following a CR can be consumed when present.

[I've classified this as a major defect because I ran into a \return-delimited file as soon as I passed a CSV from a Linux machine to a Windows machine, so I'm guessing these files are common. Feel free to reclassify.]



 Comments   
Comment by Jonas Enlund [ 24/Oct/12 3:00 PM ]

> rather than supporting unquoted, multi-line cell values, I suggest supporting CSVs with just \return as the record-separator. Would you accept a patch for that?

Sounds good to me.

> As far as implementation, I believe this would require wrapping any Reader w/o markSupported in one that does

I think that's ok, since BufferedReader supports it.





[DCSV-3] Some minor documentation typos Created: 14/Jun/12  Updated: 15/Jun/12  Resolved: 15/Jun/12

Status: Resolved
Project: data.csv
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Defect Priority: Trivial
Reporter: Trent Ogren Assignee: Jonas Enlund
Resolution: Completed Votes: 0
Labels: docs, documentation, typo

Attachments: Text File 0001-Documentation-typo-fixes.patch    
Patch: Code

 Description   

I found a couple minor typos: one in the README, one in a docstring. I've included a patch.






[DCSV-2] \return characters do not trigger value quoting Created: 10/Feb/12  Updated: 14/Feb/12  Resolved: 13/Feb/12

Status: Resolved
Project: data.csv
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Defect Priority: Major
Reporter: Giorgio Valoti Assignee: Jonas Enlund
Resolution: Completed Votes: 0
Labels: None
Environment:

Apache Maven 3.0.3 (r1075438; 2011-02-28 18:31:09+0100)
Maven home: /usr/share/maven
Java version: 1.6.0_29, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: it_IT, platform encoding: MacRoman
OS name: "mac os x", version: "10.7.2", arch: "x86_64", family: "mac"


Attachments: File csv.clj     File csv_test.clj    
Patch: Code and Test

 Description   

If the csv file contains \return characters the values are not quoted. A possible patch is attached.



 Comments   
Comment by Jonas Enlund [ 13/Feb/12 11:16 PM ]

This is fixed in version 0.1.1. I couldn't accept your patch though, as I didn't find you on the contributor list at http://clojure.org/contributing

Comment by Giorgio Valoti [ 14/Feb/12 12:36 AM ]

oh, sorry about that. I’ve completely forgot it because of the problems with jira. Glad to hear it was useful, anyway.

BTW
Why didn’t I receive notifications from Jira when the tickets were closed? Should I “watch” it





[DCSV-1] pom.xml directives Created: 10/Feb/12  Updated: 10/Feb/12

Status: Open
Project: data.csv
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Enhancement Priority: Minor
Reporter: Giorgio Valoti Assignee: Jonas Enlund
Resolution: Unresolved Votes: 0
Labels: None
Environment:

Apache Maven 3.0.3 (r1075438; 2011-02-28 18:31:09+0100)
Maven home: /usr/share/maven
Java version: 1.6.0_29, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: it_IT, platform encoding: MacRoman
OS name: "mac os x", version: "10.7.2", arch: "x86_64", family: "mac"


Attachments: XML File pom.xml    
Patch: Fixed

 Description   

If you build data.csv alone with the current pom.xml you get a couple of warnings and test are not executed. With the recent versions of Maven, these warnings can break the build.

A fixed (I hope!) version is attached.






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