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class StateTransition
attr_accessor :to_state
def initialize(to_state)
@to_state = to_state
end
end
def transition_to(state)
StateTransition.new(state)
end
$states = {}
$states[:ANYWHERE] = {
0x18 => [:execute, transition_to(:GROUND)],
0x1a => [:execute, transition_to(:GROUND)],
0x80..0x8f => [:execute, transition_to(:GROUND)],
0x91..0x97 => [:execute, transition_to(:GROUND)],
0x99 => [:execute, transition_to(:GROUND)],
0x9a => [:execute, transition_to(:GROUND)],
0x9c => [:execute, transition_to(:GROUND)],
0x1b => transition_to(:ESCAPE),
0x98 => transition_to(:SOS_PM_APC_STRING),
0x9e => transition_to(:SOS_PM_APC_STRING),
0x9f => transition_to(:SOS_PM_APC_STRING),
0x90 => transition_to(:DCS_ENTRY),
0x9d => transition_to(:OSC_STRING),
0x9b => transition_to(:CSI_ENTRY),
0xc0..0xdf => [:print, transition_to(:UTF8)], # UTF-8 2 bytes sequence start
0xe0..0xef => [:print, transition_to(:UTF8)], # UTF-8 3 bytes sequence start
0xf0..0xf7 => [:print, transition_to(:UTF8)], # UTF-8 4 bytes sequence start
0xf8..0xfb => [:print, transition_to(:UTF8)], # UTF-8 5 bytes sequence start
0xfc..0xfd => [:print, transition_to(:UTF8)] # UTF-8 6 bytes sequence start
}
$states[:GROUND] = {
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x20..0x7f => :print,
0x80..0x8f => :execute,
0x91..0x9a => :execute,
0x9c => :execute,
0xc0..0xdf => [:print, transition_to(:UTF8)], # UTF-8 2 bytes sequence start
0xe0..0xef => [:print, transition_to(:UTF8)], # UTF-8 3 bytes sequence start
0xf0..0xf7 => [:print, transition_to(:UTF8)], # UTF-8 4 bytes sequence start
0xf8..0xfb => [:print, transition_to(:UTF8)], # UTF-8 5 bytes sequence start
0xfc..0xfd => [:print, transition_to(:UTF8)] # UTF-8 6 bytes sequence start
}
$states[:UTF8] = {
0x00..0x17 => [:execute, transition_to(:GROUND)],
0x19 => [:execute, transition_to(:GROUND)],
0x1c..0x1f => [:execute, transition_to(:GROUND)],
0x20..0x7f => [:print, transition_to(:GROUND)],
0x80..0xbf => :print, # UTF-8 sequence
0xc0..0xdf => :print, # UTF-8 2 bytes sequence start
0xe0..0xef => :print, # UTF-8 3 bytes sequence start
0xf0..0xf7 => :print, # UTF-8 4 bytes sequence start
0xf8..0xfb => :print, # UTF-8 5 bytes sequence start
0xfc..0xfd => :print, # UTF-8 6 bytes sequence start
0xfe..0xff => transition_to(:GROUND)
}
$states[:ESCAPE] = {
:on_entry => :clear,
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x7f => :ignore,
0x20..0x2f => [:collect, transition_to(:ESCAPE_INTERMEDIATE)],
0x30..0x4f => [:esc_dispatch, transition_to(:GROUND)],
0x51..0x57 => [:esc_dispatch, transition_to(:GROUND)],
0x59 => [:esc_dispatch, transition_to(:GROUND)],
0x5a => [:esc_dispatch, transition_to(:GROUND)],
0x5c => [:esc_dispatch, transition_to(:GROUND)],
0x60..0x7e => [:esc_dispatch, transition_to(:GROUND)],
0x5b => transition_to(:CSI_ENTRY),
0x5d => transition_to(:OSC_STRING),
0x50 => transition_to(:DCS_ENTRY),
0x58 => transition_to(:SOS_PM_APC_STRING),
0x5e => transition_to(:SOS_PM_APC_STRING),
0x5f => transition_to(:SOS_PM_APC_STRING),
}
$states[:ESCAPE_INTERMEDIATE] = {
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x20..0x2f => :collect,
0x7f => :ignore,
0x30..0x7e => [:esc_dispatch, transition_to(:GROUND)]
}
$states[:CSI_ENTRY] = {
:on_entry => :clear,
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x7f => :ignore,
0x20..0x2f => [:collect, transition_to(:CSI_INTERMEDIATE)],
0x3a => transition_to(:CSI_IGNORE),
0x30..0x39 => [:param, transition_to(:CSI_PARAM)],
0x3b => [:param, transition_to(:CSI_PARAM)],
0x3c..0x3f => [:collect, transition_to(:CSI_PARAM)],
0x40..0x7e => [:csi_dispatch, transition_to(:GROUND)]
}
$states[:CSI_IGNORE] = {
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x20..0x3f => :ignore,
0x7f => :ignore,
0x40..0x7e => transition_to(:GROUND),
}
$states[:CSI_PARAM] = {
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x30..0x39 => :param,
0x3b => :param,
0x7f => :ignore,
0x3a => transition_to(:CSI_IGNORE),
0x3c..0x3f => transition_to(:CSI_IGNORE),
0x20..0x2f => [:collect, transition_to(:CSI_INTERMEDIATE)],
0x40..0x7e => [:csi_dispatch, transition_to(:GROUND)]
}
$states[:CSI_INTERMEDIATE] = {
0x00..0x17 => :execute,
0x19 => :execute,
0x1c..0x1f => :execute,
0x20..0x2f => :collect,
0x7f => :ignore,
0x30..0x3f => transition_to(:CSI_IGNORE),
0x40..0x7e => [:csi_dispatch, transition_to(:GROUND)],
}
$states[:DCS_ENTRY] = {
:on_entry => :clear,
0x00..0x17 => :ignore,
0x19 => :ignore,
0x1c..0x1f => :ignore,
0x7f => :ignore,
0x3a => transition_to(:DCS_IGNORE),
0x20..0x2f => [:collect, transition_to(:DCS_INTERMEDIATE)],
0x30..0x39 => [:param, transition_to(:DCS_PARAM)],
0x3b => [:param, transition_to(:DCS_PARAM)],
0x3c..0x3f => [:collect, transition_to(:DCS_PARAM)],
0x40..0x7e => [transition_to(:DCS_PASSTHROUGH)]
}
$states[:DCS_INTERMEDIATE] = {
0x00..0x17 => :ignore,
0x19 => :ignore,
0x1c..0x1f => :ignore,
0x20..0x2f => :collect,
0x7f => :ignore,
0x30..0x3f => transition_to(:DCS_IGNORE),
0x40..0x7e => transition_to(:DCS_PASSTHROUGH)
}
$states[:DCS_IGNORE] = {
0x00..0x17 => :ignore,
0x19 => :ignore,
0x1c..0x1f => :ignore,
0x20..0x7f => :ignore,
0x9c => transition_to(:GROUND)
}
$states[:DCS_PARAM] = {
0x00..0x17 => :ignore,
0x19 => :ignore,
0x1c..0x1f => :ignore,
0x30..0x39 => :param,
0x3b => :param,
0x7f => :ignore,
0x3a => transition_to(:DCS_IGNORE),
0x3c..0x3f => transition_to(:DCS_IGNORE),
0x20..0x2f => [:collect, transition_to(:DCS_INTERMEDIATE)],
0x40..0x7e => transition_to(:DCS_PASSTHROUGH)
}
$states[:DCS_PASSTHROUGH] = {
:on_entry => :hook,
0x00..0x17 => :put,
0x19 => :put,
0x1c..0x1f => :put,
0x20..0x7e => :put,
0x7f => :ignore,
0x9c => transition_to(:GROUND),
:on_exit => :unhook
}
$states[:SOS_PM_APC_STRING] = {
0x00..0x17 => :ignore,
0x19 => :ignore,
0x1c..0x1f => :ignore,
0x20..0x7f => :ignore,
0x9c => transition_to(:GROUND)
}
$states[:OSC_STRING] = {
:on_entry => :osc_start,
0x00..0x17 => :ignore,
0x19 => :ignore,
0x1c..0x1f => :ignore,
0x20..0x7f => :osc_put,
0x9c => transition_to(:GROUND),
:on_exit => :osc_end
}
$states.each { |state, transitions|
transitions.each { |keys, actions|
if not actions.kind_of?(Array)
$states[state][keys] = [actions]
end
}
}
# get the list of actions implicit in the tables
action_names = {}
$states.each { |state, transitions|
transitions.each { |keys, actions|
actions.each { |action|
if action.kind_of?(Symbol)
action_names[action] = 1
end
}
}
}
# establish an ordering to the states and actions
$actions_in_order = action_names.keys.sort { |a1, a2| a1.to_s <=> a2.to_s }
$states_in_order = $states.keys.sort { |s1, s2| s1.to_s <=> s2.to_s }
#
# Expand the above range-based data structures (which are convenient
# to write) into fully expanded tables (which are easier to use).
#
$state_tables = {}
def expand_ranges(hash_with_ranges_as_keys)
array = []
hash_with_ranges_as_keys.each { |range, val|
if range.kind_of?(Range)
range.each { |i|
array[i] = val
}
elsif range.kind_of?(Fixnum)
array[range] = val
end
}
array
end
$states.each { |state, transitions|
$state_tables[state] = expand_ranges(transitions)
}
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