https://bz.apache.org/bugzilla/show_bug.cgi?id=62412
Bug ID: 62412
Summary: XWPFParagraph.searchText returns null although the
paragraph contains the searched value
Product: POI
Version: 3.17-FINAL
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: XWPF
Assignee: dev@poi.apache.org
Reporter: sommer.flor...@gmx.de
Target Milestone: ---
The current Implementation of XWPFParagraph.searchText(...) is basically a
buggy version of the KMP Algorithm to search text
(https://en.wikipedia.org/wiki/Knuth%E2%80%93Morris%E2%80%93Pratt_algorithm)
Example:
Searched = "yoyoPlayer"
Text = "yoyoyoPlayer"
Result = null, expected = found at beginChar=2
The testcase, a lengthy explanation of the bug's cause and the fix are provided
in this repo:
https://github.com/fsomme2s/apache-poi-bug57727
Go to test class 'YoyoPlayerTest' (test folder).
The fix is provided in class 'FixedParagraphSearchText' (main folder)
Note: In a second test case I also demonstrate the bug 57727, which is also
fixed in the FixedParagraphSearchText class. Sorry for the mess
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