Bashgetopt

A command line option parser for Bash scripts.

See the sample.

Essentially, the definition would look like this:

eval "$(bashgetopt -d "Poor grep" '
i|ignroe-case    ignorecase=1    # ignore case distinctions
C|conext=i       context=%       # print NUM lines of context
e|regexp=s       pattern=%       # use PATTERN for matching
q                quiet=1         # don'\''t print matching lines. (<- this is how to put single quotes)
' "$@")"

• The first column defines flags and types (=s for flags with string arguments and =i for integer arguments).
• Everything after # is used for help.
• The middle part will is what'll be executed when each flag is detected. An argument will be replaced with %.

bashgetopt automatically will generate help if -h or --help is given.

$ ./sample/pg -h

  pg: Poor grep

  Usage:
     --bash-completion
                    Print bash completion script
 -C, --conext=value
                    print NUM lines of context
 -e, --regexp=value
                    use PATTERN for matching
 -h, --help         Show help
 -i, --ignroe-case  ignore case distinctions
 -q                 don't print matching lines. (<- this is how to put single
                    quotes)

bashgetopt supports shell completion with compromise for Bash and Zsh. Add the following line to your .bashrc or .zshrc.

. <(pg --bash-completion)

go get -u github.com/omakoto/bashgetopt