branch-2.1: [fix](function) fix error result when input utf8 in url_encode, strright, append_trailing_char_if_absent #49127

[Mryange]

…ght, append_trailing_char_if_absent (#49127)

The url_encode function previously performed a modulus operation on a signed number. Converting it to an unsigned number will fix the issue.

before
mysql> select url_encode('编码');
+----------------------+
| url_encode('编码')   |
+----------------------+
| %5.%23%0-%5.%10%/(   |
+----------------------+
now
mysql> select url_encode('编码');
+----------------------+
| url_encode('编码')   |
+----------------------+
| %E7%BC%96%E7%A0%81   |
+----------------------+

The strright function did not calculate the length according to the number of UTF-8 characters.

before
mysql> select strright("你好世界",5);
+----------------------------+
| strright("你好世界",5)     |
+----------------------------+
|                            |
+----------------------------+
now

mysql> select strright("你好世界",5);
+----------------------------+
| strright("你好世界",5)     |
+----------------------------+
| 你好世界                   |
+----------------------------+

he case of inputting a UTF-8 character was not considered.

mysql> select append_trailing_char_if_absent('中文', '文');
+-------------------------------------------------+
| append_trailing_char_if_absent('中文', '文')    |
+-------------------------------------------------+
| NULL                                            |
+-------------------------------------------------+
now
mysql> select append_trailing_char_if_absent('中文', '文');
+-------------------------------------------------+
| append_trailing_char_if_absent('中文', '文')    |
+-------------------------------------------------+
| 中文                                            |
+-------------------------------------------------+

Problem Summary:

None

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:

• This is a refactor/code format and no logic has been changed.
  - [ ] Previous test can cover this change. - [ ] No code files have been changed. - [ ] Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.

• Yes.

• Confirm the release note

• Confirm test cases

• Confirm document

• Add branch pick label

What problem does this PR solve?

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

Release note

None

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[Thearas]

Thank you for your contribution to Apache Doris.
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Please clearly describe your PR:

1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?

[Mryange]

run buildall

[hello-stephen]

BE UT Coverage Report

Increment line coverage 53.85% (21/39) 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	38.91% (10288/26443)
Line Coverage	29.93% (85417/285379)
Region Coverage	28.61% (44070/154040)
Branch Coverage	25.33% (22541/88978)

[github-actions]

PR approved by at least one committer and no changes requested.

[github-actions]

PR approved by anyone and no changes requested.