bugGNU Octave - Bugs: bug #36356, textscan: error using...


bug #36356: textscan: error using CollectOutput with uneven-length data columns

Submitted by:  Philip Nienhuis <philipnienhuis>
Submitted on:  Mon 30 Apr 2012 07:53:43 PM UTC  
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Fixed Assigned to:  Philip Nienhuis <philipnienhuis>
Originator Name:  Philip Nienhuis Open/Closed:  Closed
Release:  dev Operating System:  Any

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Fri 22 Jun 2012 05:22:18 PM UTC, comment #5: 
Philip Nienhuis <philipnienhuis>
Project MemberIn charge of this item.
Sun 13 May 2012 06:31:47 PM UTC, comment #4: 

patch rebased to tip

(file #25854)

Philip Nienhuis <philipnienhuis>
Project MemberIn charge of this item.
Fri 04 May 2012 03:58:51 PM UTC, comment #3: 

> Could a dev please push the changeset?

Isn't that you? Or are you facing problems pushing csets?

Jordi GutiƩrrez Hermoso <jordigh>
Project Administrator
Fri 04 May 2012 03:31:16 PM UTC, comment #2: 

Alexander confirms that the fixes work OK.

Could a dev please push the changeset?

Philip Nienhuis <philipnienhuis>
Project MemberIn charge of this item.
Thu 03 May 2012 10:44:33 PM UTC, comment #1: 

Fix/changeset (also including fix for bug #36392) attached.

(file #25777)

Philip Nienhuis <philipnienhuis>
Project MemberIn charge of this item.
Mon 30 Apr 2012 07:53:43 PM UTC, original submission:  

While investigating a bug report by Alexander Graf


(under "another small problem"), I found that textscan.m always removes a trailing "\n" before handing the data text string to strread().
If the last char of the data stream is a "\n", strread.m pads data columns with 0x0[] or NaN so that all columns have the same size.
If strread.m gets data w/o trailing "\n", it leaves uneven-length data column sizes as-is.
This of course is potentially the wrong thing for later CollectOutput processing by textscan.m - combining columns of the same class requires all columns to be of the same length.

I already have a fix + new test ready; I'm awaiting feedback from Alexander.

Philip Nienhuis <philipnienhuis>
Project MemberIn charge of this item.


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #25854:  textscan_strread_36356_36392.patch added by philipnienhuis (7KiB - application/x-download)


Depends on the following items: None found

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2012-06-22 philipnienhuis StatusPatch Submitted => Fixed
    2012-06-22 philipnienhuis Open/ClosedOpen => Closed
    2012-05-13 philipnienhuis Attached File- => Added textscan_strread_36356_36392.patch, #25854
    2012-05-03 philipnienhuis StatusIn Progress => Patch Submitted
    2012-05-03 philipnienhuis Attached File- => Added textscan_textread_36356_36392.patch, #25777

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