[docs] [Bug 407127] New: po2xml produces broken XML in case: <para> text <itemizedlist/> text <xref/> </para>

[Eric Bischoff]

https://bugs.kde.org/show_bug.cgi?id=407127

            Bug ID: 407127
           Summary: po2xml produces broken XML in case: <para> text
                    <itemizedlist/> text <xref/> </para>
           Product: docs
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: ksgmltools
          Assignee: kde-doc-english at kde.org
          Reporter: bischoff at kde.org
  Target Milestone: ---

Created attachment 119767
  --> https://bugs.kde.org/attachment.cgi?id=119767&action=edit
Partially working patch

SUMMARY


STEPS TO REPRODUCE

1. Add the following text to some Docbook file

   <para>
     This is an nice list:<itemizedlist>
      <listitem><para>One</para></listitem>
      <listitem><para>Two</para></listitem>
      <listitem><para>Three</para></listitem>
    </itemizedlist>that ends up here: <xref linkend="somewhere"/></para>

2. Extract the messages with xml2pot
3. Translate English into your language, result is in some po file
4. Regenerate the XML file with po2xml

OBSERVED RESULT

Invalid XML file, with the end remaining in English.

EXPECTED RESULT

Properly translated XML file.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 19.04 disco dingo
Qt: 5.12.2
KDE Frameworks: 5.56.0
kf5-config: 1.0


ADDITIONAL INFORMATION

The problem lies in poxml's parser.cpp lines 507 and 598. With that XML text,
start_line and end_line are identical for variables msg1 and msg2. The blocks: 

   "This is a nice list:"

and

   "<listitem><para>One</para></listitem>
      <listitem><para>Two</para></listitem>
      <listitem><para>Three</para></listitem>
    </itemizedlist>that ends up here: <xref linkend="somewhere"/>"

(variables msg1 and msg2) are at the same level inside the containing <para>,
it seems that this case has been overlooked.

I have a solution, but it only works if the limit between msg1 and msg2 is on
the first line (see attachement). The problem I am unable to resolve is how to
compute the column and line of the limit between msg1 and msg2 (i.e. strindex
characters after the beginning of msg1).

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