gofixit

You work on a new task, encounter a difficult problem or something you don't want to implement yet, you drop a TODO and move on, then some time later production break because you forgot about it... has this ever happened to you?

gofixit is a language-agnostic linter which enforces that your TODOs and FIXMEs are dealt with in time, very similar to this eslint plugin.

Example

File (examples/example1.c):

#include <stdio.h>

void doSomething() {
  // TODO[2022-06-15]: implement later
  assert(("unimplemented", 0));
}


int main() {
  doSomething()
}

Result (with gofixit --files examples/example1.c --strict as of 2022-06-19):

examples/example1.c:4 TODO now overdue for 4 days 13 hours
examples/example1.c:12 FIXME missing expiry date

Installation

go install github.com/LouisBrunner/gofixit@latest

Usage

gofixit

The program will log all issues to stdout and return status code:

• 1 if it failed because there was one or more issue
• 2 when it failed for an internal reason (including when using -h or --help)

Configuration

gofixit supports getting settings through:

• Environment variables: all env vars must be prefixed with GOFIXIT_ and be in all caps
• Configuration file: any file named .gofixit.config.toml in the current directory or any parent will be used, it must be a TOML formatted file
• Command-line arguments: flag names use kebab-case instead of PascalCase as for the configuration file

All settings can be set through any of those sources, they are ordered by ascending priority (environment variables < configuration file < command line arguments).

Settings:

• CommentPrefixes: strings which define what a comment definition looks like (default [//,#,/*])
• Prefixes: strings which define what a TODO looks like (default [TODO,FIXME])
• CaseSensitive: should prefixes be matched as case sensitive or not (default true)
• ExpiryPattern: Go template used to generate a regex to match the prefix and expiry date together, careful of escaping any regex character in here (default "{{.Prefix}}(?:\\[{{.Date}}\\])?"), see here for details about Go templating and here for details about Go regex
• DateLayout: date layout format, as specified by Golang's date parsing (default "2006-01-02"), see here for more details about format
• Strict: will force all matched comments to have an expiry date
• NoRecursive: disable processing directories recursively (default false)
• Files: list of files to parse (default [.])
• FilesExcludePatterns: list of patterns used to exclude files or directories
• LoggingLevel: logrus log level for internal debugging (default "fatal")

Example:

# CommentPrefixes can be set through all these mechanisms

# Environment variable
GOFIXIT_COMMENTPREFIXES='//,/*' gofixit

# Configuration file
cat > .gofixit.config.toml <<HEREDOC
CommentPrefixes = ['//', '/*']
HEREDOC
gofixit

# Command-line argument
gofixit --comment-prefixes='//,/*'

Issues

• Using date layout with variable amount of digits (e.g. 6 instead of 06) or with letters (e.g. Jun instead of 06) is currently broken
• No way to configure the utility