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module Gitlab
module Markdown
# Common methods for ReferenceFilters that support an optional cross-project
# reference.
module CrossProjectReference
NAMING_PATTERN = Gitlab::Regex::NAMESPACE_PATH_REGEX_STR
PROJECT_PATTERN = "(?<project>#{NAMING_PATTERN}/#{NAMING_PATTERN})"
# Given a cross-project reference string, get the Project record
#
# Defaults to value of `context[:project]` if:
# * No reference is given OR
# * Reference given doesn't exist
#
# ref - String reference.
#
# Returns a Project, or nil if the reference can't be accessed
def project_from_ref(ref)
return context[:project] unless ref
other = Project.find_with_namespace(ref)
return nil unless other && user_can_reference_project?(other)
other
end
def user_can_reference_project?(project, user = context[:current_user])
Ability.abilities.allowed?(user, :read_project, project)
end
end
end
end
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