CLI helper to convert asdf tool versions file to mise.toml

[Nezteb]

I think it'd be cool if there was a helper command (something like rtx convert maybe) that checks the current working directory and if there is a .tool-versions file, it attempts to generate a .rtx.toml file from it. If a .rtx.toml file already exists in the current directory, the command could just print the generated .rtx.toml to the console so the user can manually copy-paste if they would prefer.

I made a bash alias for this:

function asdfToRtx() {
  input=".tool-versions"
  output=".rtx.toml"

  declare -A language_map=(
    ["nodejs"]="node"
  )

  if [[ -e $output ]]; then
    echo "[tools]"
  else
    echo "[tools]" > $output
  fi

  # Read the input file line by line
  while IFS= read -r line
  do
    # Split the line into name and version
    name=$(echo $line | awk '{print $1}')
    version=$(echo $line | awk '{print $2}')

    # Rename languages if needed
    if [[ -n "${language_map[$name]}" ]]; then
      name="${language_map[$name]}"
    fi

    line="$name = \"$version\""

    if [[ -e $output ]]; then
      echo $line
    else
      echo $line >> $output
    fi

  done < $input
}

[jdx]

we have mise cfg generate as a common that could probably use a --tool-versions option. This is an easy change if someone wants to contribute. We already have code that can be used to parse .tool-versions:

mise/src/config/config_file/mod.rs

Lines 208 to 221 in c2f0a5a

	pub fn parse(path: &Path) -> eyre::Result<Box<dyn ConfigFile>> {
	if let Ok(settings) = Settings::try_get() {
	if settings.paranoid {
	trust_check(path)?;
	}
	}
	match detect_config_file_type(path) {
	Some(ConfigFileType::MiseToml) => Ok(Box::new(MiseToml::from_file(path)?)),
	Some(ConfigFileType::ToolVersions) => Ok(Box::new(ToolVersions::from_file(path)?)),
	Some(ConfigFileType::LegacyVersion) => Ok(Box::new(LegacyVersionFile::from_file(path)?)),
	#[allow(clippy::box_default)]
	_ => Ok(Box::new(MiseToml::default())),
	}
	}

[jdx]

I think the above script could be done more simply: .tool-versions | tr ' ' '@' | xargs -n2 mise use

[pdecat]

Slight variation of previous comment to handle renaming of the original file and squeeze multiple spaces: mv .tool-versions{,.bak} ; cat .tool-versions.bak | tr -s ' ' '@' | xargs -n2 mise use