https://bugs.documentfoundation.org/show_bug.cgi?id=162716
Bug ID: 162716
Summary: TextInputStream.ReadLine() will not always strip
line-ending characters (i.e. \r or \n)
Product: LibreOffice
Version: 24.8.0.3 release
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: UNCONFIRMED
Severity: minor
Priority: medium
Component: BASIC
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: nr95...@mailbox.org
Description:
Assume a ReadLine(input as string) routine that creates an Uno Pipe, a
TextOutputStream that writes $input to the pipe, and a TextInputStream that
uses its ReadLine() method to read the frist line from that pipe.
According to
https://api.libreoffice.org/docs/idl/ref/interfacecom_1_1sun_1_1star_1_1io_1_1XTextInputStream.html#a723d8ab1b4f3966a0e95043c20d8fa71,
the ReadLine() function should always right-trim all line-ending charactes (\r
and/or \n) from the string it returns. However, that is not always the case:
input = "abc" & chr(13) 'ends in \r
ret = ReadLine(input) 'ret has length 4 - ERROR
input = "abc" & chr(10) 'ends in \n
ret = ReadLine(input) 'ret has length 4 - ERROR
In both cases (i.e. a single line-ending character at the very end) the
line-ending character will be returned as the last character of the result.
input = "abc" & chr(13) & "def" 'no issue - ok
input = "abc" & chr(10) & "def" 'no issue - ok
input = "abc" & chr(13) & chr(10) 'no issue - ok
input = "abc" & chr(13) & chr(10) & "def" 'no issue - ok
In all other cases I have tried, there doesn't seem to be an issue.
The workaround is obvious: Don't forget to right-trim the returned result.
Steps to Reproduce:
As described above and by the sample code in the attachment.
Actual Results:
The returned string of TextInputStream.ReadLine() may include line ending
characters.
Expected Results:
Line ending characters should always be stripped from the returned string, as
is suggested by the api documentation.
Reproducible: Always
User Profile Reset: No
Additional Info:
Tested the pre-installed version of LibreOffice:
Version: 7.3.7.2 / LibreOffice Community
Build ID: 30(Build:2)
CPU threads: 4; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: de-DE (en_US.UTF-8); UI: en-US
Ubuntu package version: 1:7.3.7-0ubuntu0.22.04.6
Calc: threaded
Tested on the current "fresh" version of LibreOffice as an AppImage,
just to confirm that this is still an issue:
Version: 24.8.0.3 (X86_64) / LibreOffice Community
Build ID: 0bdf1299c94fe897b119f97f3c613e9dca6be583
CPU threads: 4; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: de-DE (en_US.UTF-8); UI: en-US
Calc: threaded
Same on Windows in a virtual machine:
Version: 24.2.5.2 (X86_64) / LibreOffice Community
Build ID: bffef4ea93e59bebbeaf7f431bb02b1a39ee8a59
CPU threads: 2; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win
Locale: de-DE (de_DE); UI: de-DE
Calc: threaded
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