nested-command-args

Embedded CLI Processing with nested 'Commands'

Original example archived in directory oldhandler

Goals

An updated example -- this example attempts to prototype the following:

• Input is a single string with space separated commands, sub-commands, and arguments as part of each "command stage".
• Argument flags are prefixed with '+' instead of '--' and the '+' is translated into '--', or '-' for simple flags so that the Golang flag or pflag packages can be utilized internally
• "Handler" functions can register with a central command registry. (This registry is then used to dispatch the execution of the handler when a CLI string arrives.)
• Nested commands register as "parent-cmd:child-cmd" using ':' as the separator. This allows sub-command command names to be reused across multiple parent commands.
• The entire framework is encapsulated as a golang package.
• Built-in Help and support for Help when coding with this package.
• Handle the corner case of a CLI with "cmd-a cmd-b cmd-c flag-1 ..." with out requiring intermediate command handlers for 'cmd-a' and 'cmd-b'.

Note: heavy inspiration was taken from the spf13/cobra package. Initially Cobra was considered as a solution.

Usage and Examples

see: example_test.go