Template processor - improve regex in replace block method

[tarnawski]

Description

This pull request improve REGEX used in template processing (TemplateProcessor class) in replaceBlock method.
The below example shows a case where a regular expression matches an incorrect piece of document content and after replacing causes an error during opening the file.

Current REGEX:

(<\?xml.*)(<w:p.*>\${blockname}<\/w:.*?p>)(.*)(<w:p.*\${\/blockname}<\/w:.*?p>)

Proposed REGEX:

(<\?xml.*)(<w:p\b.*>\${blockname}<\/w:.*?p>)(.*)(<w:p\b.*\${\/blockname}<\/w:.*?p>)

Example document content:

/word/document.xml
...
<w:p>
    <w:pPr>
        <w:pStyle w:val="Normal"/>
        <w:widowControl w:val="false"/>
        <w:rPr></w:rPr>
    </w:pPr>
    <w:r>
        <w:rPr></w:rPr>
        <w:t>${keyQualifications}</w:t>
    </w:r>
</w:p>
<w:p>
    <w:pPr>
        <w:pStyle w:val="Normal"/>
        <w:widowControl w:val="false"/>
        <w:rPr></w:rPr>
    </w:pPr>
    <w:r>
        <w:rPr></w:rPr>
        <w:t>${item}</w:t>
    </w:r>
</w:p>
<w:p>
    <w:pPr>
        <w:pStyle w:val="Normal"/>
        <w:widowControl w:val="false"/>
        <w:rPr></w:rPr>
    </w:pPr>
    <w:r>
        <w:rPr></w:rPr>
        <w:t>${/keyQualifications}</w:t>
    </w:r>
</w:p>
...

Current REGEX will result in below matches with is incorrect and lead to the wrong replacement:

<w:pStyle w:val="Normal"> ... </w:p>

REGEX proposed in this pull request correctly matches piece of code that should be replaced:

<w:p><w:pPr><w:pStyle w:val="Normal"/> ... </w:p>

Checklist:

• I have run composer run-script check --timeout=0 and no errors were reported
• The new code is covered by unit tests (check build/coverage for coverage report)
• I have updated the documentation to describe the changes

[tarnawski]

Guys, can I ask you for CR? @troosan @PowerKiKi

[tarnawski]

Hello, is there anyone here?