Crashes On Files That Use Carriage Returns.

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Introduction

Postgres Tools is a powerful tool for managing PostgreSQL databases. However, it has been reported to crash when given a file that uses Windows's carriage returns. This article will delve into the details of this bug, provide a step-by-step guide to reproduce the issue, and discuss the expected behavior.

Describe the bug

The bug occurs when Postgres Tools is given a file that uses Windows's carriage returns. The tool crashes and spits out an error message indicating that it encountered an unexpected error. The error message is as follows:

Encountered an unexpected error

This is a bug in Postgres Tools, not an error in your code, and we would appreciate it if you could report it along with the following information to help us fixing the issue:

Source Location: crates/pgt_lexer/src/lib.rs:181:9
Thread Name: pgt::worker_0
Message: No token found at position 20: 'Some("\r")'

bad.sql internalError/panic  INTERNAL  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ processing panicked: No token found at position 20: 'Some("\r")'
  
  ⚠ This diagnostic was derived from an internal error. Potential bug, please report it if necessary.
  

Checked 0 files in 1588µs. No fixes applied.
internalError/io ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ No files were processed in the specified paths.

To Reproduce

To reproduce the behavior, follow these steps:

  1. Download the attached file: Download the attached bad.txt file from the provided link.
  2. Rename to bad.sql: Rename the downloaded file to bad.sql.
  3. Run postgrestools check bad.sql: Run the command postgrestools check bad.sql in your terminal.

Expected behavior

The expected behavior is that Postgres Tools should work similar to files written on a UNIX system. In other words, it should be able to handle files with carriage returns without crashing.

Screenshots

Unfortunately, there are no screenshots available to demonstrate the issue.

System information

The system information is as follows:

  • OS: Arch Linux

Additional context

The file was received from a friend who uses Windows. When the command was run, it failed. However, when the code was written in a new file, it worked fine.

Possible causes

There are several possible causes for this bug:

  • Incompatible file format: The file format used by Windows may not be compatible with Postgres Tools.
  • Incorrect handling of carriage returns: Postgres Tools may not be handling carriage returns correctly, leading to the crash.
  • Bug in Postgres Tools: There may be a bug in Postgres Tools that is causing the crash.

Conclusion

In conclusion, Postgres Tools crashes when given a file that uses Windows's carriage returns. The bug can be reproduced by following the steps outlined above. The expected behavior is that Postgres Tools should work similar to files written on a UNIX system. Further investigation is needed to determine the root cause of the bug and to fix it.

Recommendations

Based on the information available, the following recommendations can be made:

  • Use a file format compatible with Postgres Tools: When working with files, use a file format that is compatible with Postgres Tools.
  • Check for carriage returns: When working with files, check for carriage returns and handle them correctly.
  • Report the bug: Report the bug to the Postgres Tools team to help them fix the issue.

Future work

Future work may include:

  • Investigating the root cause of the bug: Further investigation is needed to determine the root cause of the bug.
  • Fixing the bug: Once the root cause of the bug is determined, it can be fixed.
  • Testing the fix: The fix can be tested to ensure that it works as expected.

References

Appendix

The following is the contents of the bad.txt file:

SELECT * FROM table_name
WHERE column_name = 'value'

Introduction

In our previous article, we discussed the issue of Postgres Tools crashing when given a file that uses Windows's carriage returns. In this article, we will provide a Q&A section to help answer some of the most frequently asked questions about this issue.

Q: What is the cause of the crash?

A: The cause of the crash is due to the way Postgres Tools handles carriage returns in files. When a file uses Windows's carriage returns, Postgres Tools is unable to parse the file correctly, leading to a crash.

Q: Why does Postgres Tools crash on Windows's carriage returns?

A: Postgres Tools is designed to work with files that use UNIX-style line endings (LF). When a file uses Windows's carriage returns (CR), Postgres Tools is unable to handle it correctly, leading to a crash.

Q: Can I fix the issue by changing the file format?

A: Yes, you can fix the issue by changing the file format to use UNIX-style line endings (LF). This can be done using a text editor or a command-line tool.

Q: How do I change the file format to use UNIX-style line endings?

A: To change the file format to use UNIX-style line endings, you can use a text editor or a command-line tool. Here are the steps:

  • Using a text editor: Open the file in a text editor and save it with the UNIX-style line endings (LF).
  • Using a command-line tool: Use the dos2unix command to convert the file to use UNIX-style line endings (LF).

Q: Can I report the bug to the Postgres Tools team?

A: Yes, you can report the bug to the Postgres Tools team. They will appreciate your feedback and will work to fix the issue.

Q: How do I report the bug to the Postgres Tools team?

A: To report the bug to the Postgres Tools team, follow these steps:

  • Create a new issue: Create a new issue on the Postgres Tools GitHub page.
  • Provide a detailed description: Provide a detailed description of the issue, including the steps to reproduce it.
  • Attach a sample file: Attach a sample file that demonstrates the issue.

Q: What is the expected behavior of Postgres Tools?

A: The expected behavior of Postgres Tools is to work correctly with files that use Windows's carriage returns. However, due to the bug, Postgres Tools crashes when given a file that uses Windows's carriage returns.

Q: Can I use Postgres Tools with files that use Windows's carriage returns?

A: No, you cannot use Postgres Tools with files that use Windows's carriage returns until the bug is fixed.

Q: When will the bug be fixed?

A: The bug will be fixed as soon as possible. The Postgres Tools team is working to fix the issue and will provide an update once it is resolved.

Q: How can I stay up-to-date with the latest developments on the bug?

A: You can stay up-to-date with the latest developments on the bug by following the Postgres Tools GitHub page and subscribing to the issue.

Conclusion

In conclusion, the issue of Postgres Tools crashing when given a file that uses Windows's carriage returns is a known bug. We have provided a Q&A section to help answer some of the most frequently asked questions about this issue. We hope that this article has been helpful in understanding the issue and how to report it to the Postgres Tools team.