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Contents
# == PlatformManager::Struct
#
# A simple PlatformManager driver that queries a hash for results. Although
# not useful on its own, it's inherited by other drivers that provide
# platform-specific methods to query the system.
class AutomateIt::PlatformManager::Struct < AutomateIt::PlatformManager::BaseDriver
depends_on :nothing
# Hash mapping of keys that have many common names, e.g., "release" and "version"
attr_accessor :key_aliases
def suitability(method, *args) # :nodoc:
return 1
end
# Options:
# * :struct -- The hash to use for queries.
def setup(opts={})
super(opts)
@@struct_cache ||= {}
if opts[:struct]
@struct = opts[:struct]
else
@struct ||= {}
end
# Generate bi-directional map
@key_aliases ||= @@key_aliases ||= {
:version => :release,
}.inject({}){|s,v| s[v[0]] = v[1]; s[v[1]] = v[0]; s}
end
# See PlatformManager#query
def query(search)
result = ""
for key in search.to_s.split(/#/)
result << "_" unless result.empty?
result << _query_key(key)
end
result
end
def _query_key(key)
key = key.to_sym
unless @struct.has_key?(key)
key_alias = key_aliases[key]
if @struct.has_key?(key_alias)
key = key_alias
else
raise IndexError.new("platform doesn't provide key: #{key}")
end
end
return @struct[key]
end
private :_query_key
# See PlatformManager#single_vendor?
def single_vendor?
return false
end
# See PlatformManager#tags
def tags
results = []
for key in %w(os arch distro os#arch)
results << query(key) rescue IndexError
end
release_query = \
if single_vendor?
"os#release" # E.g. windows_xp
else
"distro#release" # E.g. ubuntu_6.06
end
results << query(release_query) rescue IndexError
return results
end
end
Version data entries
29 entries across 29 versions & 2 rubygems