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# frozen_string_literal: true
# Gitaly note: JV: no RPC's here.
module Gitlab
module Git
class GitmodulesParser
def initialize(content)
@content = content
end
# Parses the contents of a .gitmodules file and returns a hash of
# submodule information, indexed by path.
def parse
reindex_by_path(get_submodules_by_name)
end
private
class State
def initialize
@result = {}
@current_submodule = nil
end
def start_section(section)
# In some .gitmodules files (e.g. nodegit's), a header
# with the same name appears multiple times; we want to
# accumulate the configs across these
@current_submodule = @result[section] || { 'name' => section }
@result[section] = @current_submodule
end
def set_attribute(attr, value)
@current_submodule[attr] = value
end
def section_started?
!@current_submodule.nil?
end
def submodules_by_name
@result
end
end
def get_submodules_by_name
iterator = State.new
@content.split("\n").each_with_object(iterator) do |text, iterator|
text.chomp!
next if text =~ /^\s*#/
if text =~ /\A\[submodule "(?<name>[^"]+)"\]\z/
iterator.start_section($~[:name])
else
next unless iterator.section_started?
next unless text =~ /\A\s*(?<key>\w+)\s*=\s*(?<value>.*)\z/
value = $~[:value]
iterator.set_attribute($~[:key], value)
end
end
iterator.submodules_by_name
end
def reindex_by_path(submodules_by_name)
# Convert from an indexed by name to an array indexed by path
# If a submodule doesn't have a path, it is considered bogus
# and is ignored
submodules_by_name.each_with_object({}) do |(_name, data), results|
path = data.delete 'path'
next unless path
results[path] = data
end
end
end
end
end
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