exportlegends.lua

-- Export everything from legends mode
--[====[

exportlegends
=============
Controls legends mode to export data - especially useful to set-and-forget large
worlds, or when you want a map of every site when there are several hundred.

The 'info' option exports more data than is possible in vanilla, to a
:file:`region-date-legends_plus.xml` file developed to extend
:forums:`World Viewer <128932>` and other legends utilities.

Options:

:info:   Exports the world/gen info, the legends XML, and a custom XML with more information
:custom: Exports a custom XML with more information
:sites:  Exports all available site maps
:maps:   Exports all seventeen detailed maps
:all:    Equivalent to calling all of the above, in that order

]====]

--luacheck-flags: strictsubtype

local gui = require 'gui'
local script = require 'gui.script'
local args = {...}
local vs = dfhack.gui.getCurViewscreen()

local MAPS = {
    "Standard biome+site map",
    "Elevations including lake and ocean floors",
    "Elevations respecting water level",
    "Biome",
    "Hydrosphere",
    "Temperature",
    "Rainfall",
    "Drainage",
    "Savagery",
    "Volcanism",
    "Current vegetation",
    "Evil",
    "Salinity",
    "Structures/fields/roads/etc.",
    "Trade",
    "Nobility and Holdings",
    "Diplomacy",
}

function getItemSubTypeName(itemType, subType)
    if (dfhack.items.getSubtypeCount(itemType)) <= 0 then
        return tostring(-1)
    end
    local subtypename = dfhack.items.getSubtypeDef(itemType, subType)
    if (subtypename == nil) then
        return tostring(-1)
    else
        return escape_xml(tostring(subtypename.name):lower())
    end
end

function table_contains(self, element)
    for _, value in pairs(self) do
        if value == element then
            return true
        end
    end
    return false
end

function table_containskey(self, key)
    for value, _ in pairs(self) do
        if value == key then
            return true
        end
    end
    return false
end

function escape_xml(str)
    return str:gsub('&', '&amp;'):gsub('<', '&lt;'):gsub('>', '&gt;')
end

--luacheck: skip
function progress_ipairs(vector, desc, interval)
    desc = desc or 'item'
    interval = interval or 10000
    local cb = ipairs(vector)
    return function(vector, k, ...)
        if k and #vector >= interval and (k % interval == 0 or k == #vector - 1) then
            print(('        %s %i/%i (%0.f%%)'):format(desc, k, #vector, k * 100 / #vector))
        end
        return cb(vector, k)
    end, vector, nil
end

-- wrapper that returns "unknown N" for df.enum_type[BAD_VALUE],
-- instead of returning nil or causing an error
local df_enums = {} --as:df
setmetatable(df_enums, {
    __index = function(self, enum)
        if not df[enum] or df[enum]._kind ~= 'enum-type' then
            error('invalid enum: ' .. enum)
        end
        local t = {}
        setmetatable(t, {
            __index = function(self, k)
                return df[enum][k] or 'unknown ' .. k
            end
        })
        return t
    end,
    __newindex = function() error('read-only') end
})

--create an extra legends xml with extra data, by Mason11987 for World Viewer
function export_more_legends_xml()
    local month = dfhack.world.ReadCurrentMonth() + 1 --days and months are 1-indexed
    local day = dfhack.world.ReadCurrentDay()
    local year_str = string.format('%0'..math.max(5, string.len(''..df.global.cur_year))..'d', df.global.cur_year)
    local date_str = year_str..string.format('-%02d-%02d', month, day)
    local problem_elements = {}

    local filename = df.global.world.cur_savegame.save_dir.."-"..date_str.."-legends_plus.xml"
    local file = io.open(filename, 'w')
    if not file then qerror("could not open file: " .. filename) end

    file:write("<?xml version=\"1.0\" encoding='UTF-8'?>\n")
    file:write("<df_world>\n")
    file:write("<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(df.global.world.world_data.name))).."</name>\n")
    file:write("<altname>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(df.global.world.world_data.name,1))).."</altname>\n")

    file:write("<landmasses>\n")
    for landmassK, landmassV in progress_ipairs(df.global.world.world_data.landmasses, 'landmass') do
        file:write("\t<landmass>\n")
        file:write("\t\t<id>"..landmassV.index.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(landmassV.name,1))).."</name>\n")
        file:write("\t\t<coord_1>"..landmassV.min_x..","..landmassV.min_y.."</coord_1>\n")
        file:write("\t\t<coord_2>"..landmassV.max_x..","..landmassV.max_y.."</coord_2>\n")
        file:write("\t</landmass>\n")
    end
    file:write("</landmasses>\n")

    file:write("<mountain_peaks>\n")
    for mountainK, mountainV in progress_ipairs(df.global.world.world_data.mountain_peaks, 'mountain') do
        file:write("\t<mountain_peak>\n")
        file:write("\t\t<id>"..mountainK.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(mountainV.name,1))).."</name>\n")
        file:write("\t\t<coords>"..mountainV.pos.x..","..mountainV.pos.y.."</coords>\n")
        file:write("\t\t<height>"..mountainV.height.."</height>\n")
        file:write("\t\t<is_volcano>"..tostring(mountainV.flags.is_volcano).."</is_volcano>\n")
        file:write("\t</mountain_peak>\n")
    end
    file:write("</mountain_peaks>\n")

    file:write("<regions>\n")
    for regionK, regionV in progress_ipairs(df.global.world.world_data.regions, 'region') do
        file:write("\t<region>\n")
        file:write("\t\t<id>"..regionV.index.."</id>\n")
        file:write("\t\t<coords>")
        for xK, xVal in ipairs(regionV.region_coords.x) do
           file:write(xVal..","..regionV.region_coords.y[xK].."|")
        end
        file:write("</coords>\n")
        local evilness = "neutral"
        if regionV.evil then
           evilness = "evil"
        elseif regionV.good then
           evilness = "good"
        end
        file:write("\t\t<evilness>"..evilness.."</evilness>\n")
        for forceK, forceVal in ipairs(regionV.forces) do
           file:write("\t\t<force_id>"..forceVal.."</force_id>\n")
        end
        file:write("\t</region>\n")
    end
    file:write("</regions>\n")

    file:write("<underground_regions>\n")
    for regionK, regionV in progress_ipairs(df.global.world.world_data.underground_regions, 'underground region') do
        file:write("\t<underground_region>\n")
        file:write("\t\t<id>"..regionV.index.."</id>\n")
        file:write("\t\t<coords>")
            for xK, xVal in ipairs(regionV.region_coords.x) do
                file:write(xVal..","..regionV.region_coords.y[xK].."|")
            end
        file:write("</coords>\n")
        file:write("\t</underground_region>\n")
    end
    file:write("</underground_regions>\n")

    file:write("<rivers>\n")
    for riverK, riverV in progress_ipairs(df.global.world.world_data.rivers, 'river') do
        file:write("\t<river>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(riverV.name, 1))).."</name>\n")
        file:write("\t\t<path>")
        for pathK, pathV in progress_ipairs(riverV.path.x, 'river section') do
            file:write(pathV..","..riverV.path.y[pathK]..",")
            file:write(riverV.flow[pathK]..",")
            file:write(riverV.exit_tile[pathK]..",")
            file:write(riverV.elevation[pathK].."|")
        end
        file:write("</path>\n")
        file:write("\t\t<end_pos>"..riverV.end_pos.x..","..riverV.end_pos.y.."</end_pos>\n")
        file:write("\t</river>\n")
    end
    file:write("</rivers>\n")

    file:write("<creature_raw>\n")
    for creatureK, creatureV in ipairs (df.global.world.raws.creatures.all) do
        file:write("\t<creature>\n")
        file:write("\t\t<creature_id>"..creatureV.creature_id.."</creature_id>\n")
        file:write("\t\t<name_singular>"..escape_xml(dfhack.df2utf(creatureV.name[0])).."</name_singular>\n")
        file:write("\t\t<name_plural>"..escape_xml(dfhack.df2utf(creatureV.name[1])).."</name_plural>\n")
        for flagK, flagV in ipairs (df.creature_raw_flags) do
            file:write("\t\t<"..flagV:lower()..">"..tostring(creatureV.flags[flagV]).."</"..flagV:lower()..">\n")
        end
        file:write("\t</creature>\n")
    end
    file:write("</creature_raw>\n")

    file:write("<sites>\n")
    for siteK, siteV in progress_ipairs(df.global.world.world_data.sites, 'site') do
        file:write("\t<site>\n")
        for k,v in pairs(siteV) do
            if (k == "id" or k == "civ_id" or k == "cur_owner_id") then
                file:write("\t\t<"..k..">"..tostring(v).."</"..k..">\n")
            elseif (k == "buildings") then
                if (#siteV.buildings > 0) then
                    file:write("\t\t<structures>\n")
                    for buildingK, buildingV in ipairs(siteV.buildings) do
                        file:write("\t\t\t<structure>\n")
                        file:write("\t\t\t\t<id>"..buildingV.id.."</id>\n")
                        file:write("\t\t\t\t<type>"..df_enums.abstract_building_type[buildingV:getType()]:lower().."</type>\n")
                        if table_containskey(buildingV,"name") then
                            file:write("\t\t\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(buildingV.name, 1))).."</name>\n")
                            file:write("\t\t\t\t<name2>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(buildingV.name))).."</name2>\n")
                        end
                        if df.abstract_building_templest:is_instance(buildingV) then
                            file:write("\t\t\t\t<deity_type>"..buildingV.deity_type.."</deity_type>\n")
                            if buildingV.deity_type == df.temple_deity_type.Deity then
                                file:write("\t\t\t\t<deity>"..buildingV.deity_data.Deity.."</deity>\n")
                            elseif buildingV.deity_type == df.temple_deity_type.Religion then
                                file:write("\t\t\t\t<religion>"..buildingV.deity_data.Religion.."</religion>\n")
                            end
                        end
                        if df.abstract_building_dungeonst:is_instance(buildingV) then
                            file:write("\t\t\t\t<dungeon_type>"..buildingV.dungeon_type.."</dungeon_type>\n")
                        end
                        for inhabitabntK,inhabitabntV in pairs(buildingV.inhabitants) do
                            file:write("\t\t\t\t<inhabitant>"..inhabitabntV.histfig_id.."</inhabitant>\n")
                        end
                        file:write("\t\t\t</structure>\n")
                    end
                    file:write("\t\t</structures>\n")
                end
            end
        end
        file:write("\t</site>\n")
    end
    file:write("</sites>\n")

    file:write("<world_constructions>\n")
    for wcK, wcV in progress_ipairs(df.global.world.world_data.constructions.list, 'construction') do
        file:write("\t<world_construction>\n")
        file:write("\t\t<id>"..wcV.id.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(wcV.name,1))).."</name>\n")
        file:write("\t\t<type>"..(df_enums.world_construction_type[wcV:getType()]):lower().."</type>\n")
        file:write("\t\t<coords>")
        for xK, xVal in ipairs(wcV.square_pos.x) do
            file:write(xVal..","..wcV.square_pos.y[xK].."|")
        end
        file:write("</coords>\n")
        file:write("\t</world_construction>\n")
    end
    file:write("</world_constructions>\n")

    file:write("<artifacts>\n")
    for artifactK, artifactV in progress_ipairs(df.global.world.artifacts.all, 'artifact') do
        file:write("\t<artifact>\n")
        file:write("\t\t<id>"..artifactV.id.."</id>\n")
        local item = artifactV.item
        if df.item_constructed:is_instance(item) then
            file:write("\t\t<item_type>"..tostring(df_enums.item_type[item:getType()]):lower().."</item_type>\n")
            if (item:getSubtype() ~= -1) then --luacheck: skip
                file:write("\t\t<item_subtype>"..escape_xml(dfhack.df2utf(item.subtype.name)).."</item_subtype>\n")
            end
            for improvementK,impovementV in pairs(item.improvements) do
                if df.itemimprovement_writingst:is_instance(impovementV) then
                    for writingk,writingV in pairs(impovementV.contents) do
                        file:write("\t\t<writing>"..writingV.."</writing>\n")
                    end
                elseif df.itemimprovement_pagesst:is_instance(impovementV) then
                    file:write("\t\t<page_count>"..impovementV.count.."</page_count>\n")
                    for writingk,writingV in pairs(impovementV.contents) do
                        file:write("\t\t<writing>"..writingV.."</writing>\n")
                    end
                end
            end
        end
        if (table_containskey(item,"description")) then
            file:write("\t\t<item_description>"..dfhack.df2utf(item.description:lower()).."</item_description>\n")
        end
        if item:getMaterial() ~= -1 then
            file:write("\t\t<mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(item:getMaterial(), item:getMaterialIndex()))).."</mat>\n")
        end
        file:write("\t</artifact>\n")
    end
    file:write("</artifacts>\n")

    file:write("<historical_figures>\n")
    for hfK, hfV in progress_ipairs(df.global.world.history.figures, 'historical figure') do
        file:write("\t<historical_figure>\n")
        file:write("\t\t<id>"..hfV.id.."</id>\n")
        file:write("\t\t<sex>"..hfV.sex.."</sex>\n")
        if hfV.race >= 0 then file:write("\t\t<race>"..escape_xml(dfhack.df2utf(df.creature_raw.find(hfV.race).name[0])).."</race>\n") end
        file:write("\t</historical_figure>\n")
    end
    file:write("</historical_figures>\n")

    file:write("<identities>\n")
    for idK, idV in progress_ipairs(df.global.world.identities.all, 'identity') do
        file:write("\t<identity>\n")
        file:write("\t\t<id>"..idV.id.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(idV.name,1))).."</name>\n")
        file:write("\t\t<histfig_id>"..idV.histfig_id.."</histfig_id>\n")
        if idV.race >= 0 then file:write("\t\t<race>"..(df.global.world.raws.creatures.all[idV.race].creature_id):lower().."</race>\n") end
        if idV.race >= 0  and idV.caste >= 0 then file:write("\t\t<caste>"..(df.global.world.raws.creatures.all[idV.race].caste[idV.caste].caste_id):lower().."</caste>\n") end
        file:write("\t\t<birth_year>"..idV.birth_year.."</birth_year>\n")
        file:write("\t\t<birth_second>"..idV.birth_year.."</birth_second>\n")
        if idV.profession >= 0 then file:write("\t\t<profession>"..(df_enums.profession[idV.profession]):lower().."</profession>\n") end
        file:write("\t\t<entity_id>"..idV.civ.."</entity_id>\n")
        file:write("\t</identity>\n")
    end
    file:write("</identities>\n")

    file:write("<entity_populations>\n")
    for entityPopK, entityPopV in progress_ipairs(df.global.world.entity_populations, 'entity population') do
        file:write("\t<entity_population>\n")
        file:write("\t\t<id>"..entityPopV.id.."</id>\n")
        for raceK, raceV in ipairs(entityPopV.races) do
            local raceName = (df.global.world.raws.creatures.all[raceV].creature_id):lower()
            file:write("\t\t<race>"..raceName..":"..entityPopV.counts[raceK].."</race>\n")
        end
        file:write("\t\t<civ_id>"..entityPopV.civ_id.."</civ_id>\n")
        file:write("\t</entity_population>\n")
    end
    file:write("</entity_populations>\n")

    file:write("<entities>\n")
    for entityK, entityV in progress_ipairs(df.global.world.entities.all, 'entity') do
        file:write("\t<entity>\n")
        file:write("\t\t<id>"..entityV.id.."</id>\n")
        if entityV.race >= 0 then
            file:write("\t\t<race>"..(df.global.world.raws.creatures.all[entityV.race].creature_id):lower().."</race>\n")
        end
        file:write("\t\t<type>"..(df_enums.historical_entity_type[entityV.type]):lower().."</type>\n")
        if entityV.type == df.historical_entity_type.Religion or entityV.type == df.historical_entity_type.MilitaryUnit then -- Get worshipped figures
            if (entityV.relations ~= nil and entityV.relations.deities ~= nil) then
                for k,v in pairs(entityV.relations.deities) do
                    file:write("\t\t<worship_id>"..v.."</worship_id>\n")
                end
            end
        end
        if entityV.type == df.historical_entity_type.MilitaryUnit then -- Get favorite weapons
            if (entityV.resources ~= nil and entityV.resources.weapon_type ~= nil) then
                for weaponK,weaponID in pairs(entityV.resources.weapon_type) do
                    file:write("\t\t<weapon>"..getItemSubTypeName(df.item_type.WEAPON, weaponID).."</weapon>\n")
                end
            end
        end
        if entityV.type == df.historical_entity_type.Guild then -- Get profession
           for professionK,professionV in pairs(entityV.guild_professions) do
              file:write("\t\t<profession>"..df_enums.profession[professionV.profession]:lower().."</profession>\n")
           end
        end
        for id, link in pairs(entityV.entity_links) do
            file:write("\t\t<entity_link>\n")
                for k, v in pairs(link) do
                    if (k == "type") then
                        file:write("\t\t\t<"..k..">"..tostring(df_enums.entity_entity_link_type[v]).."</"..k..">\n")
                    else
                        file:write("\t\t\t<"..k..">"..v.."</"..k..">\n")
                    end
                end
            file:write("\t\t</entity_link>\n")
        end
        for positionK,positionV in pairs(entityV.positions.own) do
            file:write("\t\t<entity_position>\n")
            file:write("\t\t\t<id>"..positionV.id.."</id>\n")
            if positionV.name[0]          ~= "" then file:write("\t\t\t<name>"..escape_xml(positionV.name[0]).."</name>\n") end
            if positionV.name_male[0]     ~= "" then file:write("\t\t\t<name_male>"..escape_xml(positionV.name_male[0]).."</name_male>\n") end
            if positionV.name_female[0]   ~= "" then file:write("\t\t\t<name_female>"..escape_xml(positionV.name_female[0]).."</name_female>\n") end
            if positionV.spouse[0]        ~= "" then file:write("\t\t\t<spouse>"..positionV.spouse[0].."</spouse>\n") end
            if positionV.spouse_male[0]   ~= "" then file:write("\t\t\t<spouse_male>"..positionV.spouse_male[0].."</spouse_male>\n") end
            if positionV.spouse_female[0] ~= "" then file:write("\t\t\t<spouse_female>"..positionV.spouse_female[0].."</spouse_female>\n") end
            file:write("\t\t</entity_position>\n")
        end
        for assignmentK,assignmentV in pairs(entityV.positions.assignments) do
            file:write("\t\t<entity_position_assignment>\n")
            for k, v in pairs(assignmentV) do
                if (k == "id" or k == "histfig" or k == "position_id" or k == "squad_id") then
                    file:write("\t\t\t<"..k..">"..v.."</"..k..">\n")
                end
            end
            file:write("\t\t</entity_position_assignment>\n")
        end
        for idx,id in pairs(entityV.histfig_ids) do
            file:write("\t\t<histfig_id>"..id.."</histfig_id>\n")
        end
        for id, link in ipairs(entityV.children) do
            file:write("\t\t<child>"..link.."</child>\n")
        end

        file:write("\t\t<claims>")
        for xK, xVal in ipairs(entityV.claims.border.x) do
            file:write(xVal..","..entityV.claims.border.y[xK].."|")
        end
        file:write("\t\t</claims>\n")

        if (table_containskey(entityV,"occasion_info") and entityV.occasion_info ~= nil) then
            for occasionK, occasionV in pairs(entityV.occasion_info.occasions) do
                file:write("\t\t<occasion>\n")
                file:write("\t\t\t<id>"..occasionV.id.."</id>\n")
                file:write("\t\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(occasionV.name,1))).."</name>\n")
                file:write("\t\t\t<event>"..occasionV.event.."</event>\n")
                for scheduleK, scheduleV in pairs(occasionV.schedule) do
                    file:write("\t\t\t<schedule>\n")
                    file:write("\t\t\t\t<id>"..scheduleK.."</id>\n")
                    file:write("\t\t\t\t<type>"..df_enums.occasion_schedule_type[scheduleV.type]:lower().."</type>\n")
                    if(scheduleV.type == df.occasion_schedule_type.THROWING_COMPETITION) then
                        file:write("\t\t\t\t<item_type>"..df_enums.item_type[scheduleV.reference]:lower().."</item_type>\n")
                        file:write("\t\t\t\t<item_subtype>"..getItemSubTypeName(scheduleV.reference,scheduleV.reference2).."</item_subtype>\n")
                    else
                        file:write("\t\t\t\t<reference>"..scheduleV.reference.."</reference>\n")
                        file:write("\t\t\t\t<reference2>"..scheduleV.reference2.."</reference2>\n")
                    end
                    for featureK, featureV in pairs(scheduleV.features) do
                        file:write("\t\t\t\t<feature>\n")
                        if(df_enums.occasion_schedule_feature[featureV.feature] ~= nil) then
                            file:write("\t\t\t\t\t<type>"..df_enums.occasion_schedule_feature[featureV.feature]:lower().."</type>\n")
                        else
                            file:write("\t\t\t\t\t<type>"..featureV.feature.."</type>\n")
                        end
                        file:write("\t\t\t\t\t<reference>"..featureV.reference.."</reference>\n")
                        file:write("\t\t\t\t</feature>\n")
                    end
                    file:write("\t\t\t</schedule>\n")
                end
                file:write("\t\t</occasion>\n")
            end
        end
        file:write("\t</entity>\n")
    end
    file:write("</entities>\n")

    file:write("<historical_events>\n")
    for ID, event in progress_ipairs(df.global.world.history.events, 'event') do
        if df.history_event_add_hf_entity_linkst:is_instance(event)
              or df.history_event_add_hf_site_linkst:is_instance(event)
              or df.history_event_add_hf_hf_linkst:is_instance(event)
              or df.history_event_add_hf_entity_linkst:is_instance(event)
              or df.history_event_topicagreement_concludedst:is_instance(event)
              or df.history_event_topicagreement_rejectedst:is_instance(event)
              or df.history_event_topicagreement_madest:is_instance(event)
              or df.history_event_body_abusedst:is_instance(event)
              or df.history_event_change_creature_typest:is_instance(event)
              or df.history_event_change_hf_jobst:is_instance(event)
              or df.history_event_change_hf_statest:is_instance(event)
              or df.history_event_created_buildingst:is_instance(event)
              or df.history_event_creature_devouredst:is_instance(event)
              or df.history_event_hf_does_interactionst:is_instance(event)
              or df.history_event_hf_learns_secretst:is_instance(event)
              or df.history_event_hist_figure_new_petst:is_instance(event)
              or df.history_event_hist_figure_reach_summitst:is_instance(event)
              or df.history_event_item_stolenst:is_instance(event)
              or df.history_event_remove_hf_entity_linkst:is_instance(event)
              or df.history_event_remove_hf_site_linkst:is_instance(event)
              or df.history_event_replaced_buildingst:is_instance(event)
              or df.history_event_masterpiece_created_arch_designst:is_instance(event)
              or df.history_event_masterpiece_created_dye_itemst:is_instance(event)
              or df.history_event_masterpiece_created_arch_constructst:is_instance(event)
              or df.history_event_masterpiece_created_itemst:is_instance(event)
              or df.history_event_masterpiece_created_item_improvementst:is_instance(event)
              or df.history_event_masterpiece_created_foodst:is_instance(event)
              or df.history_event_masterpiece_created_engravingst:is_instance(event)
              or df.history_event_masterpiece_lostst:is_instance(event)
              or df.history_event_entity_actionst:is_instance(event)
              or df.history_event_hf_act_on_buildingst:is_instance(event)
              or df.history_event_artifact_createdst:is_instance(event)
              or df.history_event_assume_identityst:is_instance(event)
              or df.history_event_create_entity_positionst:is_instance(event)
              or df.history_event_diplomat_lostst:is_instance(event)
              or df.history_event_merchantst:is_instance(event)
              or df.history_event_war_peace_acceptedst:is_instance(event)
              or df.history_event_war_peace_rejectedst:is_instance(event)
              or df.history_event_hist_figure_woundedst:is_instance(event)
              or df.history_event_hist_figure_diedst:is_instance(event)
                then
            file:write("\t<historical_event>\n")
            file:write("\t\t<id>"..event.id.."</id>\n")
            file:write("\t\t<type>"..tostring(df_enums.history_event_type[event:getType()]):lower().."</type>\n")
            for k,v in pairs(event) do
                if k == "year" or k == "seconds" or k == "flags" or k == "id"
                    or (k == "region" and not df.history_event_hf_does_interactionst:is_instance(event))
                    or k == "region_pos" or k == "layer" or k == "feature_layer" or k == "subregion"
                    or k == "anon_1" or k == "anon_2" or k == "flags2" or k == "unk1" then

                elseif df.history_event_add_hf_entity_linkst:is_instance(event) and k == "link_type" then
                    file:write("\t\t<"..k..">"..df_enums.histfig_entity_link_type[v]:lower().."</"..k..">\n")
                elseif df.history_event_add_hf_entity_linkst:is_instance(event) and k == "position_id" then
                    local entity = df.historical_entity.find(event.civ)
                    if (entity ~= nil and event.civ > -1 and v > -1) then
                        for entitypositionsK, entityPositionsV in ipairs(entity.positions.own) do
                            if entityPositionsV.id == v then
                                file:write("\t\t<position>"..escape_xml(tostring(entityPositionsV.name[0]):lower()).."</position>\n")
                                break
                            end
                        end
                    else
                        file:write("\t\t<position>-1</position>\n")
                    end
                elseif df.history_event_create_entity_positionst:is_instance(event) and k == "position" then
                    local entity = df.historical_entity.find(event.site_civ)
                    if (entity ~= nil and v > -1) then
                        for entitypositionsK, entityPositionsV in ipairs(entity.positions.own) do
                            if entityPositionsV.id == v then
                                file:write("\t\t<position>"..escape_xml(tostring(entityPositionsV.name[0]):lower()).."</position>\n")
                                break
                            end
                        end
                    else
                        file:write("\t\t<position>-1</position>\n")
                    end
                elseif df.history_event_remove_hf_entity_linkst:is_instance(event) and k == "link_type" then
                    file:write("\t\t<"..k..">"..df_enums.histfig_entity_link_type[v]:lower().."</"..k..">\n")
                elseif df.history_event_remove_hf_entity_linkst:is_instance(event) and k == "position_id" then
                    local entity = df.historical_entity.find(event.civ)
                    if (entity ~= nil and event.civ > -1 and v > -1) then
                        for entitypositionsK, entityPositionsV in ipairs(entity.positions.own) do
                            if entityPositionsV.id == v then
                                file:write("\t\t<position>"..escape_xml(tostring(entityPositionsV.name[0]):lower()).."</position>\n")
                                break
                            end
                        end
                    else
                        file:write("\t\t<position>-1</position>\n")
                    end
                elseif df.history_event_add_hf_hf_linkst:is_instance(event) and k == "type" then
                    file:write("\t\t<link_type>"..df_enums.histfig_hf_link_type[v]:lower().."</link_type>\n")
                elseif df.history_event_add_hf_site_linkst:is_instance(event) and k == "type" then
                    file:write("\t\t<link_type>"..df_enums.histfig_site_link_type[v]:lower().."</link_type>\n")
                elseif df.history_event_remove_hf_site_linkst:is_instance(event) and k == "type" then
                    file:write("\t\t<link_type>"..df_enums.histfig_site_link_type[v]:lower().."</link_type>\n")
                elseif (df.history_event_item_stolenst:is_instance(event) or
                        df.history_event_masterpiece_created_itemst:is_instance(event) or
                        df.history_event_masterpiece_created_item_improvementst:is_instance(event) or
                        df.history_event_masterpiece_created_dye_itemst:is_instance(event)
                        ) and k == "item_type" then
                    file:write("\t\t<item_type>"..df_enums.item_type[v]:lower().."</item_type>\n")
                elseif (df.history_event_item_stolenst:is_instance(event) or
                        df.history_event_masterpiece_created_itemst:is_instance(event) or
                        df.history_event_masterpiece_created_item_improvementst:is_instance(event) or
                        df.history_event_masterpiece_created_dye_itemst:is_instance(event)
                        ) and k == "item_subtype" then
                    --if event.item_type > -1 and v > -1 then
                        file:write("\t\t<"..k..">"..getItemSubTypeName(event.item_type,v).."</"..k..">\n")
                    --end
                    elseif df.history_event_masterpiece_created_foodst:is_instance(event) and k == "item_subtype" then
                        --if event.item_type > -1 and v > -1 then
                            file:write("\t\t<item_type>food</item_type>\n")
                            file:write("\t\t<"..k..">"..getItemSubTypeName(df.item_type.FOOD,v).."</"..k..">\n")
                        --end
                elseif df.history_event_item_stolenst:is_instance(event) and k == "mattype" then
                    if (v > -1) then
                        if (dfhack.matinfo.decode(event.mattype, event.matindex) == nil) then
                            file:write("\t\t<mattype>"..event.mattype.."</mattype>\n")
                            file:write("\t\t<matindex>"..event.matindex.."</matindex>\n")
                        else
                            file:write("\t\t<mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.mattype, event.matindex))).."</mat>\n")
                        end
                    end
                elseif (df.history_event_artifact_possessedst:is_instance(event) or
                        df.history_event_poetic_form_createdst:is_instance(event) or
                        df.history_event_musical_form_createdst:is_instance(event) or
                        df.history_event_dance_form_createdst:is_instance(event) or
                        df.history_event_written_content_composedst:is_instance(event) or
                        df.history_event_artifact_claim_formedst:is_instance(event) or
                        df.history_event_artifact_givenst:is_instance(event) or
                        df.history_event_entity_dissolvedst:is_instance(event) or
                        df.history_event_item_stolenst:is_instance(event) or
                        df.history_event_artifact_createdst:is_instance(event)) and k == "circumstance" then
                    file:write("\t\t<circumstance>\n")
                    file:write("\t\t\t<type>"..event.circumstance.type.."</type>\n")
                    if event.circumstance.type == df.unit_thought_type.Death then
                        file:write("\t\t\t<Death>"..event.circumstance.data.Death.."</Death>\n")
                    elseif event.circumstance.type == df.unit_thought_type.Prayer then
                        file:write("\t\t\t<Prayer>"..event.circumstance.data.Prayer.."</Prayer>\n")
                    elseif event.circumstance.type == df.unit_thought_type.DreamAbout then
                        file:write("\t\t\t<DreamAbout>"..event.circumstance.data.DreamAbout.."</DreamAbout>\n")
                    elseif event.circumstance.type == df.unit_thought_type.Defeated then
                        file:write("\t\t\t<Defeated>"..event.circumstance.data.Defeated.."</Defeated>\n")
                    elseif event.circumstance.type == df.unit_thought_type.Murdered then
                        file:write("\t\t\t<Murdered>"..event.circumstance.data.Murdered.."</Murdered>\n")
                    elseif event.circumstance.type == df.unit_thought_type.HistEventCollection then
                        file:write("\t\t\t<HistEventCollection>"..event.circumstance.data.HistEventCollection.."</HistEventCollection>\n")
                    end
                    file:write("\t\t</circumstance>\n")
                elseif (df.history_event_artifact_possessedst:is_instance(event) or
                        df.history_event_poetic_form_createdst:is_instance(event) or
                        df.history_event_musical_form_createdst:is_instance(event) or
                        df.history_event_dance_form_createdst:is_instance(event) or
                        df.history_event_written_content_composedst:is_instance(event) or
                        df.history_event_artifact_claim_formedst:is_instance(event) or
                        df.history_event_artifact_givenst:is_instance(event) or
                        df.history_event_entity_dissolvedst:is_instance(event) or
                        df.history_event_item_stolenst:is_instance(event) or
                        df.history_event_artifact_createdst:is_instance(event)) and k == "reason" then
                    file:write("\t\t<reason>\n")
                    file:write("\t\t\t<type>"..df.history_event_reason[event.reason.type].."</type>\n")
                    if event.reason.type == df.history_event_reason.glorify_hf then
                        file:write("\t\t\t<glorify_hf>"..event.reason.data.glorify_hf.."</glorify_hf>\n")
                    elseif event.reason.type == df.history_event_reason.artifact_is_heirloom_of_family_hfid then
                        file:write("\t\t\t<artifact_is_heirloom_of_family_hfid>"..event.reason.data.artifact_is_heirloom_of_family_hfid.."</artifact_is_heirloom_of_family_hfid>\n")
                    elseif event.reason.type == df.history_event_reason.artifact_is_symbol_of_entity_position then
                        file:write("\t\t\t<artifact_is_symbol_of_entity_position>"..event.reason.data.artifact_is_symbol_of_entity_position.."</artifact_is_symbol_of_entity_position>\n")
                    end
                    file:write("\t\t</reason>\n")
                elseif (df.history_event_masterpiece_created_itemst:is_instance(event) or
                        df.history_event_masterpiece_created_item_improvementst:is_instance(event) or
                        df.history_event_masterpiece_created_foodst:is_instance(event) or
                        df.history_event_masterpiece_created_dye_itemst:is_instance(event)
                        ) and k == "mat_type" then
                    if (v > -1) then
                        if (dfhack.matinfo.decode(event.mat_type, event.mat_index) == nil) then
                            file:write("\t\t<mat_type>"..event.mat_type.."</mat_type>\n")
                            file:write("\t\t<mat_index>"..event.mat_index.."</mat_index>\n")
                        else
                            file:write("\t\t<mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.mat_type, event.mat_index))).."</mat>\n")
                        end
                    end
                elseif df.history_event_masterpiece_created_item_improvementst:is_instance(event) and k == "imp_mat_type" then
                    if (v > -1) then
                        if (dfhack.matinfo.decode(event.imp_mat_type, event.imp_mat_index) == nil) then
                            file:write("\t\t<imp_mat_type>"..event.imp_mat_type.."</imp_mat_type>\n")
                            file:write("\t\t<imp_mat_index>"..event.imp_mat_index.."</imp_mat_index>\n")
                        else
                            file:write("\t\t<imp_mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.imp_mat_type, event.imp_mat_index))).."</imp_mat>\n")
                        end
                    end
                elseif df.history_event_masterpiece_created_dye_itemst:is_instance(event) and k == "dye_mat_type" then
                    if (v > -1) then
                        if (dfhack.matinfo.decode(event.dye_mat_type, event.dye_mat_index) == nil) then
                            file:write("\t\t<dye_mat_type>"..event.dye_mat_type.."</dye_mat_type>\n")
                            file:write("\t\t<dye_mat_index>"..event.dye_mat_index.."</dye_mat_index>\n")
                        else
                            file:write("\t\t<dye_mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.dye_mat_type, event.dye_mat_index))).."</dye_mat>\n")
                        end
                    end

                elseif df.history_event_item_stolenst:is_instance(event) and k == "matindex" then
                    --skip
                elseif df.history_event_item_stolenst:is_instance(event) and k == "item" and v == -1 then
                    --skip
                elseif (df.history_event_masterpiece_created_itemst:is_instance(event) or
                        df.history_event_masterpiece_created_item_improvementst:is_instance(event)
                        ) and k == "mat_index" then
                    --skip
                elseif df.history_event_masterpiece_created_item_improvementst:is_instance(event) and k == "imp_mat_index" then
                    --skip
                elseif (df.history_event_war_peace_acceptedst:is_instance(event) or
                        df.history_event_war_peace_rejectedst:is_instance(event) or
                        df.history_event_topicagreement_concludedst:is_instance(event) or
                        df.history_event_topicagreement_rejectedst:is_instance(event) or
                        df.history_event_topicagreement_madest:is_instance(event)
                        ) and k == "topic" then
                    file:write("\t\t<topic>"..tostring(df_enums.meeting_topic[v]):lower().."</topic>\n")
                elseif df.history_event_masterpiece_created_item_improvementst:is_instance(event) and k == "improvement_type" then
                    file:write("\t\t<improvement_type>"..df_enums.improvement_type[v]:lower().."</improvement_type>\n")
                elseif ((df.history_event_hist_figure_reach_summitst:is_instance(event) and k == "group")
                     or (df.history_event_hist_figure_new_petst:is_instance(event) and k == "group")
                     or (df.history_event_body_abusedst:is_instance(event) and k == "bodies")) then
                    for detailK,detailV in pairs(v) do
                        file:write("\t\t<"..k..">"..detailV.."</"..k..">\n")
                    end
                elseif  df.history_event_hist_figure_new_petst:is_instance(event) and k == "pets" then
                    for detailK,detailV in pairs(v) do
                        file:write("\t\t<"..k..">"..escape_xml(dfhack.df2utf(df.creature_raw.find(detailV).name[0])).."</"..k..">\n")
                    end
                elseif df.history_event_body_abusedst:is_instance(event) and (k == "abuse_data") then
                    if event.abuse_type == df.history_event_body_abusedst.T_abuse_type.Impaled then
                        file:write("\t\t<item_type>"..tostring(df_enums.item_type[event.abuse_data.Impaled.item_type]):lower().."</item_type>\n")
                        file:write("\t\t<item_subtype>"..getItemSubTypeName(event.abuse_data.Impaled.item_type,event.abuse_data.Impaled.item_subtype).."</item_subtype>\n")
                        if (event.abuse_data.Impaled.mat_type > -1) then
                            if (dfhack.matinfo.decode(event.abuse_data.Impaled.mat_type, event.abuse_data.Impaled.mat_index) == nil) then
                                file:write("\t\t<mat_type>"..event.abuse_data.Impaled.mat_type.."</mat_type>\n")
                                file:write("\t\t<mat_index>"..event.abuse_data.Impaled.mat_index.."</mat_index>\n")
                            else
                                file:write("\t\t<item_mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.abuse_data.Impaled.mat_type, event.abuse_data.Impaled.mat_index))).."</item_mat>\n")
                            end
                        end
                    elseif event.abuse_type == df.history_event_body_abusedst.T_abuse_type.Piled then
                        file:write("\t\t<pile_type>"..df.history_event_body_abusedst.T_abuse_data.T_Piled.T_pile_type [event.abuse_data.Piled.pile_type].."</pile_type>\n")
                    elseif event.abuse_type == df.history_event_body_abusedst.T_abuse_type.Flayed then
                        file:write("\t\t<structure>"..tostring(event.abuse_data.Flayed.structure).."</structure>\n")
                    elseif event.abuse_type == df.history_event_body_abusedst.T_abuse_type.Hung then
                        file:write("\t\t<tree>"..tostring(event.abuse_data.Hung.tree).."</tree>\n")
                        file:write("\t\t<mat_type>"..event.abuse_data.Hung.mat_type.."</mat_type>\n")
                        file:write("\t\t<mat_index>"..event.abuse_data.Hung.mat_index.."</mat_index>\n")
                    elseif event.abuse_type == df.history_event_body_abusedst.T_abuse_type.Mutilated then  --  For completeness. No fields
                    elseif event.abuse_type == df.history_event_body_abusedst.T_abuse_type.Animated then
                        file:write("\t\t<interaction>"..tostring(event.abuse_data.Animated.interaction).."</interaction>\n")
                    end
                elseif df.history_event_assume_identityst:is_instance(event) and k == "identity" then
                    local identity = df.identity.find(v)
                    if identity then
                        if identity.histfig_id ~= -1 then
                            file:write("\t\t<identity_hf>"..identity.histfig_id.."</identity_hf>\n")
                        end
                        file:write("\t\t<identity_name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(identity.name))).."</identity_name>\n")
                        local craw = df.creature_raw.find(identity.race)
                        if craw then
                            file:write("\t\t<identity_race>"..(craw.creature_id):lower().."</identity_race>\n")
                            file:write("\t\t<identity_caste>"..(craw.caste[identity.caste].caste_id):lower().."</identity_caste>\n")
                        end
                    end
                elseif df.history_event_masterpiece_created_arch_constructst:is_instance(event) and k == "building_type" then
                    file:write("\t\t<building_type>"..df_enums.building_type[v]:lower().."</building_type>\n")
                elseif df.history_event_masterpiece_created_arch_constructst:is_instance(event) and k == "building_subtype" then
                    if (df_enums.building_type[event.building_type]:lower() == "furnace") then
                        file:write("\t\t<building_subtype>"..df_enums.furnace_type[v]:lower().."</building_subtype>\n")
                    elseif v > -1 then
                        file:write("\t\t<building_subtype>"..tostring(v).."</building_subtype>\n")
                    end
                elseif k == "race" then
                    if v > -1 then
                        file:write("\t\t<race>"..escape_xml(dfhack.df2utf(df.global.world.raws.creatures.all[v].name[0])).."</race>\n")
                    end
                elseif k == "caste" then
                    if v > -1 then
                        file:write("\t\t<caste>"..(df.global.world.raws.creatures.all[event.race].caste[v].caste_id):lower().."</caste>\n")
                    end
                elseif k == "interaction" and df.history_event_hf_does_interactionst:is_instance(event) then
                    file:write("\t\t<interaction_action>"..df.global.world.raws.interactions[v].str[3].value.."</interaction_action>\n")
                    file:write("\t\t<interaction_string>"..df.global.world.raws.interactions[v].str[4].value.."</interaction_string>\n")
                elseif k == "interaction" and df.history_event_hf_learns_secretst:is_instance(event) then
                    file:write("\t\t<secret_text>"..df.global.world.raws.interactions[v].str[2].value.."</secret_text>\n")
                elseif df.history_event_hist_figure_diedst:is_instance(event) and k == "weapon" then
                    for detailK,detailV in pairs(v) do
                        if (detailK == "item") then
                            if detailV > -1 then
                                file:write("\t\t<"..detailK..">"..detailV.."</"..detailK..">\n")
                                local thisItem = df.item.find(detailV)
                                if (thisItem ~= nil) then
                                    if (thisItem.flags.artifact == true) then
                                        for refk,refv in pairs(thisItem.general_refs) do
                                            if (df.general_ref_is_artifactst:is_instance(refv)) then
                                                file:write("\t\t<artifact_id>"..refv.artifact_id.."</artifact_id>\n")
                                                break
                                            end
                                        end
                                    end
                                end

                            end
                        elseif (detailK == "item_type") then
                            if event.weapon.item > -1 then
                                file:write("\t\t<"..detailK..">"..tostring(df_enums.item_type[detailV]):lower().."</"..detailK..">\n")
                            end
                        elseif (detailK == "item_subtype") then
                            if event.weapon.item > -1 and detailV > -1 then
                                file:write("\t\t<"..detailK..">"..getItemSubTypeName(event.weapon.item_type,detailV).."</"..detailK..">\n")
                            end
                        elseif (detailK == "mattype") then
                            if (detailV > -1) then
                                file:write("\t\t<mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.weapon.mattype, event.weapon.matindex))).."</mat>\n")
                            end
                        elseif (detailK == "matindex") then

                        elseif (detailK == "shooter_item") then
                            if detailV > -1 then
                                file:write("\t\t<"..detailK..">"..detailV.."</"..detailK..">\n")
                                local thisItem = df.item.find(detailV)
                                if  thisItem ~= nil then
                                    if (thisItem.flags.artifact == true) then
                                        for refk,refv in pairs(thisItem.general_refs) do
                                            if (df.general_ref_is_artifactst:is_instance(refv)) then
                                                file:write("\t\t<shooter_artifact_id>"..refv.artifact_id.."</shooter_artifact_id>\n")
                                                break
                                            end
                                        end
                                    end
                                end
                            end
                        elseif (detailK == "shooter_item_type") then
                            if event.weapon.shooter_item > -1 then
                                file:write("\t\t<"..detailK..">"..tostring(df_enums.item_type[detailV]):lower().."</"..detailK..">\n")
                            end
                        elseif (detailK == "shooter_item_subtype") then
                            if event.weapon.shooter_item > -1 and detailV > -1 then
                                file:write("\t\t<"..detailK..">"..getItemSubTypeName(event.weapon.shooter_item_type,detailV).."</"..detailK..">\n")
                            end
                        elseif (detailK == "shooter_mattype") then
                            if (detailV > -1) then
                                file:write("\t\t<shooter_mat>"..dfhack.df2utf(dfhack.matinfo.toString(dfhack.matinfo.decode(event.weapon.shooter_mattype, event.weapon.shooter_matindex))).."</shooter_mat>\n")
                            end
                        elseif (detailK == "shooter_matindex") then
                            --skip
                        elseif detailK == "slayer_race" or detailK == "slayer_caste" then
                            --skip
                        else
                            file:write("\t\t<"..detailK..">"..detailV.."</"..detailK..">\n")
                        end
                    end
                elseif df.history_event_hist_figure_diedst:is_instance(event) and k == "death_cause" then
                    file:write("\t\t<"..k..">"..df_enums.death_type[v]:lower().."</"..k..">\n")
                elseif df.history_event_change_hf_jobst:is_instance(event) and (k == "new_job" or k == "old_job") then
                    file:write("\t\t<"..k..">"..df_enums.profession[v]:lower().."</"..k..">\n")
                elseif df.history_event_change_creature_typest:is_instance(event) and (k == "old_race" or k == "new_race")  and v >= 0 then
                    file:write("\t\t<"..k..">"..escape_xml(dfhack.df2utf(df.global.world.raws.creatures.all[v].name[0])).."</"..k..">\n")
                elseif tostring(v):find ("<") then
                    if not problem_elements[tostring(event._type)] then
                        problem_elements[tostring(event._type)] = {}
                    end
                    if not problem_elements[tostring(event._type)][k] then
                        problem_elements [tostring(event._type)][k] = true
                    end
                    file:write("\t\t<"..k..">please report compound element for correction</"..k..">\n")
                else
                    file:write("\t\t<"..k..">"..tostring(v).."</"..k..">\n")
                end
            end
            file:write("\t</historical_event>\n")
        end
    end
    file:write("</historical_events>\n")
    file:write("<historical_event_relationships>\n")
    for ID, set in progress_ipairs(df.global.world.history.relationship_events, 'relationship_event') do
        for k = 0, set.next_element - 1 do
            file:write("\t<historical_event_relationship>\n")
            file:write("\t\t<event>"..set.event[k].."</event>\n")
            file:write("\t\t<relationship>"..set.relationship[k].."</relationship>\n")
            file:write("\t\t<source_hf>"..set.source_hf[k].."</source_hf>\n")
            file:write("\t\t<target_hf>"..set.target_hf[k].."</target_hf>\n")
            file:write("\t\t<year>"..set.year[k].."</year>\n")
            file:write("\t</historical_event_relationship>\n")
        end
    end
    file:write("</historical_event_relationships>\n")
    file:write("<historical_event_relationship_supplements>\n")
    for ID, event in progress_ipairs(df.global.world.history.relationship_event_supplements, 'relationship_event_supplement') do
        file:write("\t<historical_event_relationship_supplement>\n")
        file:write("\t\t<event>"..event.event.."</event>\n")
        file:write("\t\t<occasion_type>"..event.occasion_type.."</occasion_type>\n")
        file:write("\t\t<site>"..event.site.."</site>\n")
        file:write("\t\t<unk_1>"..event.unk_1.."</unk_1>\n")
        file:write("\t</historical_event_relationship_supplement>\n")
    end
    file:write("</historical_event_relationship_supplements>\n")
    file:write("<historical_event_collections>\n")
    file:write("</historical_event_collections>\n")
    file:write("<historical_eras>\n")
    file:write("</historical_eras>\n")

    file:write("<written_contents>\n")
    for wcK, wcV in progress_ipairs(df.global.world.written_contents.all) do
        file:write("\t<written_content>\n")
        file:write("\t\t<id>"..wcV.id.."</id>\n")
        file:write("\t\t<title>"..escape_xml(dfhack.df2utf(wcV.title)).."</title>\n")
        file:write("\t\t<page_start>"..wcV.page_start.."</page_start>\n")
        file:write("\t\t<page_end>"..wcV.page_end.."</page_end>\n")
        for refK, refV in pairs(wcV.refs) do
            file:write("\t\t<reference>\n")
            file:write("\t\t\t<type>"..df_enums.general_ref_type[refV:getType()].."</type>\n")
            if df.general_ref_artifact:is_instance(refV) then file:write("\t\t\t<id>"..refV.artifact_id.."</id>\n") -- artifact
            elseif df.general_ref_entity:is_instance(refV) then file:write("\t\t\t<id>"..refV.entity_id.."</id>\n") -- entity
            elseif df.general_ref_historical_eventst:is_instance(refV) then file:write("\t\t\t<id>"..refV.event_id.."</id>\n") -- event
            elseif df.general_ref_sitest:is_instance(refV) then file:write("\t\t\t<id>"..refV.site_id.."</id>\n") -- site
            elseif df.general_ref_subregionst:is_instance(refV) then file:write("\t\t\t<id>"..refV.region_id.."</id>\n") -- region
            elseif df.general_ref_historical_figurest:is_instance(refV) then file:write("\t\t\t<id>"..refV.hist_figure_id.."</id>\n") -- hist figure
            elseif df.general_ref_written_contentst:is_instance(refV) then file:write("\t\t\t<id>"..refV.written_content_id.."</id>\n")
            elseif df.general_ref_poetic_formst:is_instance(refV) then file:write("\t\t\t<id>"..refV.poetic_form_id.."</id>\n") -- poetic form
            elseif df.general_ref_musical_formst:is_instance(refV) then file:write("\t\t\t<id>"..refV.musical_form_id.."</id>\n") -- musical form
            elseif df.general_ref_dance_formst:is_instance(refV) then file:write("\t\t\t<id>"..refV.dance_form_id.."</id>\n") -- dance form
            elseif df.general_ref_interactionst:is_instance(refV) then -- TODO INTERACTION
            elseif df.general_ref_knowledge_scholar_flagst:is_instance(refV) then -- TODO KNOWLEDGE_SCHOLAR_FLAG
            elseif df.general_ref_value_levelst:is_instance(refV) then -- TODO VALUE_LEVEL
            elseif df.general_ref_languagest:is_instance(refV) then -- TODO LANGUAGE
            elseif df.general_ref_abstract_buildingst:is_instance(refV) then -- TODO ABSTRACT_BUILDING
            else
                print("unknown reference",refV:getType(),df_enums.general_ref_type[refV:getType()])
                --for k,v in pairs(refV) do print(k,v) end
            end
            file:write("\t\t</reference>\n")
        end
        file:write("\t\t<type>"..(df_enums.written_content_type[wcV.type] or wcV.type).."</type>\n")
        for styleK, styleV in pairs(wcV.styles) do
            file:write("\t\t<style>"..(df_enums.written_content_style[styleV] or styleV).."</style>\n")
        end
        file:write("\t\t<author>"..wcV.author.."</author>\n")
        file:write("\t</written_content>\n")
    end
    file:write("</written_contents>\n")

    file:write("<poetic_forms>\n")
    for formK, formV in progress_ipairs(df.global.world.poetic_forms.all, 'poetic form') do
        file:write("\t<poetic_form>\n")
        file:write("\t\t<id>"..formV.id.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(formV.name,1))).."</name>\n")
        file:write("\t</poetic_form>\n")
    end
    file:write("</poetic_forms>\n")

    file:write("<musical_forms>\n")
    for formK, formV in progress_ipairs(df.global.world.musical_forms.all, 'musical form') do
        file:write("\t<musical_form>\n")
        file:write("\t\t<id>"..formV.id.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(formV.name,1))).."</name>\n")
        file:write("\t</musical_form>\n")
    end
    file:write("</musical_forms>\n")

    file:write("<dance_forms>\n")
    for formK, formV in progress_ipairs(df.global.world.dance_forms.all, 'dance form') do
        file:write("\t<dance_form>\n")
        file:write("\t\t<id>"..formV.id.."</id>\n")
        file:write("\t\t<name>"..escape_xml(dfhack.df2utf(dfhack.TranslateName(formV.name,1))).."</name>\n")
        file:write("\t</dance_form>\n")
    end
    file:write("</dance_forms>\n")

    file:write("</df_world>\n")
    file:close()

    local problem_elements_exist = false
    for i, element in pairs (problem_elements) do
        for k, field in pairs (element) do
          dfhack.printerr (i.." element '"..k.."' attempted to be processed as simple type.")
        end
        problem_elements_exist = true
    end
    if problem_elements_exist then
        dfhack.printerr ("Some elements could not be interpreted correctly because they were not simple elements.")
        dfhack.printerr ("These elements are reported above. Please notify the DFHack community of these value pairs.")
        dfhack.printerr ("Note that these issues have not invalidated the XML file: it ought to still be usable.")
    end
end

-- export information and XML ('p, x')
function export_legends_info()
    print('    Exporting:  World map/gen info')
    gui.simulateInput(vs, 'LEGENDS_EXPORT_MAP')
    print('    Exporting:  Legends xml')
    gui.simulateInput(vs, 'LEGENDS_EXPORT_XML')
    print("    Exporting:  Extra legends_plus xml")
    export_more_legends_xml()
end

function export_detailed_maps()
    script.start(function()
        for i = 1, #MAPS do
            local vs = dfhack.gui.getViewscreenByType(df.viewscreen_export_graphical_mapst, 0)
            if not vs then
                local legends_vs = dfhack.gui.getViewscreenByType(df.viewscreen_legendsst, 0)
                    or qerror("Could not find legends screen")
                gui.simulateInput(legends_vs, 'LEGENDS_EXPORT_DETAILED_MAP')
            end

            vs = dfhack.gui.getViewscreenByType(df.viewscreen_export_graphical_mapst, 0)
                or qerror("Could not find map export screen")
            vs.sel_type = i - 1
            print('    Exporting map: ' .. MAPS[i])
            gui.simulateInput(vs, 'SELECT')
            while dfhack.gui.getCurViewscreen() == vs do
                script.sleep(10, 'frames')
            end
        end
    end)
end

-- export site maps
function export_site_maps()
    local vs = dfhack.gui.getCurViewscreen()
    if ((dfhack.gui.getCurFocus() ~= "legends" ) and (not table_contains(vs, "main_cursor"))) then -- Using open-legends
        vs = vs.parent --luacheck: retype
    end
    if df.viewscreen_legendsst:is_instance(vs) then
        print('    Exporting:  All possible site maps')
        vs.main_cursor = 1
        gui.simulateInput(vs, 'SELECT')
        for i=1, #vs.sites do
            gui.simulateInput(vs, 'LEGENDS_EXPORT_MAP')
            gui.simulateInput(vs, 'STANDARDSCROLL_DOWN')
        end
        gui.simulateInput(vs, 'LEAVESCREEN')
    else
        qerror('this command can only be used in Legends mode')
    end
end

-- main()
if dfhack.gui.getCurFocus() == "legends" or dfhack.gui.getCurFocus() == "dfhack/lua/legends" then
    -- either native legends mode, or using the open-legends.lua script
    if args[1] == "all" then
        export_legends_info()
        export_site_maps()
        export_detailed_maps()
    elseif args[1] == "info" then
        export_legends_info()
    elseif args[1] == "custom" then
        export_more_legends_xml()
    elseif args[1] == "maps" then
        export_detailed_maps()
    elseif args[1] == "sites" then
        export_site_maps()
    else
        qerror('Valid arguments are "all", "info", "custom", "maps" or "sites"')
    end
elseif args[1] == "maps" and dfhack.gui.getCurFocus() == "export_graphical_map" then
    export_detailed_maps()
else
    qerror('exportlegends must be run from the main legends view')
end