Escape backslashes when building tab-separated row

[cvvergara]

(cherry picked from commit 798d8ec)

The pr #317 was made with the old code, and all tests were failing

@pgRouting/admins

Summary by CodeRabbit

• Bug Fixes
  • Fixed handling of backslashes in tab-separated data exports to ensure proper escaping and preserve data integrity.

[coderabbitai]

Walkthrough

Modified the tab_separated function in utilities to escape backslashes within non-empty columns using boost::replace_all, adding a new header inclusion for the string replacement algorithm from Boost.

Changes

Cohort / File(s)	Summary
Backslash escaping in tab-separated output src/utilities/utilities.cpp	Added boost/algorithm/string/replace.hpp header. Introduced backslash escaping logic in tab_separated function to replace single backslashes with double backslashes in non-empty columns before appending to result.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

• Focus on verifying the escaping logic correctly handles edge cases (consecutive backslashes, empty columns, etc.)
• Confirm the Boost library usage is consistent with existing codebase patterns

Poem

A rabbit hops through strings so long,
Escaping slashes, making them strong!
Backslashes doubled, safe and sound,
In tabs they're tangled, tightly wound. 🐰✨

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The PR title "Escape backslashes when building tab-separated row" directly corresponds to the main change in the changeset. The raw summary confirms that backslash escaping was introduced in the tab_separated function using boost::replace_all(column, "\\", "\\\\"), which is precisely what the title describes. The title is concise, specific, and clearly communicates the primary purpose of the change without vague terminology or unnecessary details. A teammate reviewing the commit history would immediately understand that this PR addresses backslash escaping in tab-separated row construction.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 8a97793 and 6364305.

📒 Files selected for processing (1)

• src/utilities/utilities.cpp (2 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (20)

• GitHub Check: Codacy Static Code Analysis
• GitHub Check: Ubuntu psql (17, 3, Release, ubuntu-22.04, clang)
• GitHub Check: Ubuntu psql (18, 3, Release, ubuntu-latest, g++-11)
• GitHub Check: Ubuntu psql (18, 3, Debug, ubuntu-22.04, clang)
• GitHub Check: Ubuntu psql (16, 3, Release, ubuntu-latest, gcc-latest)
• GitHub Check: Ubuntu psql (18, 3, Release, ubuntu-latest, clang)
• GitHub Check: Ubuntu psql (17, 3, Release, ubuntu-latest, g++-11)
• GitHub Check: Ubuntu psql (17, 3, Debug, ubuntu-22.04, clang)
• GitHub Check: Ubuntu psql (15, 3, Debug, ubuntu-latest, g++-11)
• GitHub Check: Ubuntu psql (15, 3, Debug, ubuntu-22.04, gcc-latest)
• GitHub Check: Ubuntu psql (16, 3, Debug, ubuntu-22.04, gcc-latest)
• GitHub Check: Ubuntu psql (15, 3, Release, ubuntu-latest, g++-11)
• GitHub Check: Ubuntu psql (15, 3, Release, ubuntu-22.04, gcc-latest)
• GitHub Check: Ubuntu psql (15, 3, Debug, ubuntu-22.04, clang)
• GitHub Check: Ubuntu psql (16, 3, Debug, ubuntu-latest, g++-11)
• GitHub Check: Ubuntu psql (14, 3, Debug, ubuntu-22.04, clang)
• GitHub Check: Ubuntu psql (14, 3, Debug, ubuntu-22.04, g++-11)
• GitHub Check: Ubuntu psql (14, 3, Debug, ubuntu-latest, g++-11)
• GitHub Check: Ubuntu psql (14, 3, Debug, ubuntu-latest, gcc-latest)
• GitHub Check: Ubuntu psql (14, 3, Release, ubuntu-latest, clang)

🔇 Additional comments (1)

src/utilities/utilities.cpp (1)

23-23: LGTM!

The include is necessary for boost::replace_all and is correctly added.

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