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Add an option dont_prefill_defaults to ArgParseSettings #47

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Add an option dont_prefill_defaults to ArgParseSettings #47

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13 changes: 10 additions & 3 deletions src/ArgParse.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -232,6 +232,8 @@ This is the list of general settings currently available:
```

The module also provides a function `ArgParse.debug_handler` (not exported) which will just rethrow the error.
* `dont_prefill_defaults` (default = `false`): if `true`, the dictionary returned by [`parse_args`](@ref)
will only contain the entries corresponding to the options present in the given argument list.

Here is a usage example:

Expand Down Expand Up @@ -284,6 +286,7 @@ type ArgParseSettings
exc_handler::Function
preformatted_description::Bool
preformatted_epilog::Bool
dont_prefill_defaults::Bool

function ArgParseSettings(;prog::AbstractString = Base.source_path() != nothing ? basename(Base.source_path()) : "",
description::AbstractString = "",
Expand All @@ -301,6 +304,7 @@ type ArgParseSettings
exc_handler::Function = default_handler,
preformatted_description::Bool=false,
preformatted_epilog::Bool=false,
dont_prefill_defaults::Bool=false,
)
fromfile_prefix_chars = check_prefix_chars(fromfile_prefix_chars)
return new(
Expand All @@ -309,6 +313,7 @@ type ArgParseSettings
suppress_warnings, allow_ambiguous_opts, commands_are_required,
copy(std_groups), "", ArgParseTable(), exc_handler,
preformatted_description, preformatted_epilog,
dont_prefill_defaults
)
end
end
Expand Down Expand Up @@ -1886,9 +1891,11 @@ type ParserState
out_dict::Dict{String,Any}
function ParserState(args_list::Vector, settings::ArgParseSettings, truncated_shopts::Bool)
out_dict = Dict{String,Any}()
for f in settings.args_table.fields
(f.action == :show_help || f.action == :show_version) && continue
out_dict[f.dest_name] = deepcopy(f.default)
if !settings.dont_prefill_defaults
for f in settings.args_table.fields
(f.action == :show_help || f.action == :show_version) && continue
out_dict[f.dest_name] = deepcopy(f.default)
end
end
new(deepcopy(args_list), false, nothing, nothing, false, 0, Set{AbstractString}(), nothing, truncated_shopts, out_dict)
end
Expand Down