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|
--
-- Copyright (c) 2021-2023 Zeping Lee
-- Released under the MIT license.
-- Repository: https://github.com/zepinglee/citeproc-lua
--
local engine = {}
local dom
local context
local element
local nodes
local node_locale
local node_style
local output
local util
if kpse then
dom = require("luaxml-domobject")
context = require("citeproc-context")
element = require("citeproc-element")
nodes = require("citeproc-nodes")
node_locale = require("citeproc-node-locale")
node_style = require("citeproc-node-style")
output = require("citeproc-output")
util = require("citeproc-util")
else
dom = require("citeproc.luaxml.domobject")
context = require("citeproc.context")
element = require("citeproc.element")
nodes = require("citeproc.nodes")
node_locale = require("citeproc.node-locale")
node_style = require("citeproc.node-style")
output = require("citeproc.output")
util = require("citeproc.util")
end
local Element = element.Element
local Style = node_style.Style
local Locale = node_locale.Locale
local Context = context.Context
local IrState = context.IrState
local InlineElement = output.InlineElement
-- local OutputFormat = output.OutputFormat
local LatexWriter = output.LatexWriter
local HtmlWriter = output.HtmlWriter
local SortStringFormat = output.SortStringFormat
---@class CiteProc
---@field style any
---@field lang string
local CiteProc = {}
---comment
---@param sys table
---@param style string
---@param lang string?
---@param force_lang boolean?
---@return CiteProc
function CiteProc.new(sys, style, lang, force_lang)
if not sys then
error("\"citeprocSys\" required")
end
if sys.retrieveLocale == nil then
error("\"citeprocSys.retrieveLocale\" required")
end
if sys.retrieveItem == nil then
error("\"citeprocSys.retrieveItem\" required")
end
local o = {}
o.style = Style:parse(style)
o.sys = sys
o.locales = {}
o.system_locales = {}
o.lang = o.style.default_locale
if not o.lang or force_lang then
o.lang = lang or "en-US"
end
o.output_format = LatexWriter:new()
o.opt = {
-- Similar to citeproc-js's development_extensions.wrap_url_and_doi
wrap_url_and_doi = false,
citation_link = false,
title_link = false,
}
o.registry = {
citations_by_id = {}, -- A map
citation_list = {}, -- A list
citations_by_item_id = {}, -- A map from item id to a map of citations
registry = {}, -- A map of bibliographic meta data
reflist = {}, -- list of cited ids
uncited_list = {},
previous_citation = nil,
requires_sorting = false,
widest_label = "",
maxoffset = 0,
}
o.cite_first_note_numbers = {}
o.cite_last_note_numbers = {}
o.note_citations_map = {}
o.tainted_item_ids = {}
o.disam_irs = {}
-- { <ir1>, <ir2>, ... }
o.cite_irs_by_output = {}
-- {
-- ["Roe, J"] = {<ir1>},
-- ["Doe, J"] = {<ir2>, <ir3>},
-- ["Doe, John"] = {<ir2>},
-- ["Doe, Jack"] = {<ir2>},
-- }
o.person_names = {}
o.person_names_by_output = {}
setmetatable(o, { __index = CiteProc })
return o
end
function CiteProc:updateItems(ids)
self.registry.reflist = {}
self.registry.registry = {}
self.person_names = {}
self.person_names_by_output = {}
self.disam_irs = {}
self.cite_irs_by_output = {}
local cite_items = {}
local loaded_ids = {}
for _, id in ipairs(ids) do
table.insert(cite_items, {id = id})
loaded_ids[id] = true
end
for _, id in ipairs(self.registry.uncited_list) do
if not loaded_ids[id] then
table.insert(cite_items, {id = id})
loaded_ids[id] = true
end
end
-- TODO: optimize this
self:makeCitationCluster(cite_items)
self.registry.previous_citation = nil
self.cite_first_note_numbers = {}
self.cite_last_note_numbers = {}
self.note_citations_map = {}
for _, item in ipairs(self.registry.registry) do
item.year_suffix_number = nil
item["year-suffix"] = nil
end
end
function CiteProc:updateUncitedItems(uncited_ids)
-- self.registry.reflist = {}
self.registry.registry = {}
self.registry.uncited_list = {}
self.person_names = {}
self.person_names_by_output = {}
self.disam_irs = {}
self.cite_irs_by_output = {}
local cite_items = {}
local loaded_ids = {}
for _, id in ipairs(self.registry.reflist) do
if not loaded_ids[id] then
table.insert(cite_items, {id = id})
loaded_ids[id] = true
end
end
self.registry.reflist = {}
for _, id in ipairs(uncited_ids) do
if not loaded_ids[id] then
table.insert(cite_items, {id = id})
loaded_ids[id] = true
end
end
loaded_ids = {}
for _, id in ipairs(uncited_ids) do
if not loaded_ids[id] then
table.insert(self.registry.uncited_list, id)
loaded_ids[id] = true
end
end
-- TODO: optimize this
self:makeCitationCluster(cite_items)
self.registry.previous_citation = nil
self.cite_first_note_numbers = {}
self.cite_last_note_numbers = {}
self.note_citations_map = {}
end
function CiteProc:processCitationCluster(citation, citationsPre, citationsPost)
-- util.debug(citation.citationID)
citation = self:normalize_citation_input(citation)
-- Registor citation
self.registry.citations_by_id[citation.citationID] = citation
local citation_note_pairs = {}
util.extend(citation_note_pairs, citationsPre)
table.insert(citation_note_pairs, {citation.citationID, citation.properties.noteIndex})
util.extend(citation_note_pairs, citationsPost)
-- util.debug(citation_note_pairs)
local citations_by_id = {}
local citation_list = {}
for _, pair in ipairs(citation_note_pairs) do
local citation_id, note_number = table.unpack(pair)
local citation_ = self.registry.citations_by_id[citation_id]
if not citation_ then
util.error("Citation not in registry.")
end
citations_by_id[citation_.citationID] = citation_
table.insert(citation_list, citation_)
end
self.registry.citations_by_id = citations_by_id
self.registry.citation_list = citation_list
-- update self.registry.citations_by_item_id
local item_ids = {}
self.registry.citations_by_item_id = {}
for _, citation_ in ipairs(citation_list) do
for _, cite_item in ipairs(citation_.citationItems) do
if not self.registry.citations_by_item_id[cite_item.id] then
self.registry.citations_by_item_id[cite_item.id] = {}
table.insert(item_ids, cite_item.id)
end
self.registry.citations_by_item_id[cite_item.id][citation_.citationID] = true
end
end
self:updateItems(item_ids)
local params = {
bibchange = false,
citation_errors = {},
}
local output = {}
local tainted_citation_ids = self:get_tainted_citaion_ids(citation_note_pairs)
tainted_citation_ids[citation.citationID] = true
-- util.debug(tainted_citation_ids)
-- params.bibchange = #tainted_citation_ids > 0
for citation_id, _ in pairs(tainted_citation_ids) do
local citation_ = self.registry.citations_by_id[citation_id]
local citation_index = citation_.citation_index
local mode = citation_.properties.mode
if mode == "suppress-author" and self.style.class == "note" then
mode = nil
end
local citation_elemement = self.style.citation
if mode == "author-only" and self.style.intext then
citation_elemement = self.style.intext
end
local citation_str = citation_elemement:build_citation_str(citation_, self)
table.insert(output, {citation_index, citation_str, citation_id})
end
return {params, output}
end
function CiteProc:normalize_citation_input(citation)
citation = util.deep_copy(citation)
if not citation.citationID then
citation.citationID = "CITATION-" .. tostring(#self.registry.citation_list)
end
if not citation.citationItems then
citation.citationItems = {}
end
for i, cite_item in ipairs(citation.citationItems) do
citation.citationItems[i] = self:normalize_cite_item(cite_item)
end
-- Fix missing noteIndex: sort_CitationNumberPrimaryAscendingViaMacroCitation.txt
if not citation.properties then
citation.properties = {}
end
if not citation.properties.noteIndex then
citation.properties.noteIndex = 0
end
return citation
end
function CiteProc:normalize_cite_item(cite_item)
-- Shallow copy
cite_item = util.clone(cite_item)
cite_item.id = tostring(cite_item.id)
-- Use "page" as locator label if missing
-- label_PluralWithAmpersand.txt
if cite_item.locator and not cite_item.label then
cite_item.label = "page"
end
if cite_item.prefix then
-- Assert CSL rich-text or HTML-like tagged string
if cite_item.prefix == "" then
cite_item.prefix = nil
else
cite_item.prefix = InlineElement:parse(cite_item.prefix)
end
end
if cite_item.suffix then
if cite_item.suffix == "" then
cite_item.suffix = nil
else
cite_item.suffix = InlineElement:parse(cite_item.suffix)
end
end
return cite_item
end
-- A variant of processCitationCluster() for easy use with LaTeX.
-- It should be run after refreshing the registry (updateItems()) with all items
function CiteProc:process_citation(citation)
-- util.debug(citation)
-- util.debug(citationsPre)
-- Fix missing noteIndex: sort_CitationNumberPrimaryAscendingViaMacroCitation.txt
citation = self:normalize_citation_input(citation)
-- Registor citation
self.registry.citations_by_id[citation.citationID] = citation
table.insert(self.registry.citation_list, citation)
local citation_note_pairs = {}
for _, citation_ in ipairs(self.registry.citation_list) do
table.insert(citation_note_pairs, {citation_.citationID, citation_.properties.noteIndex})
end
-- update self.registry.citations_by_item_id
for _, cite_item in ipairs(citation.citationItems) do
if not self.registry.citations_by_item_id[cite_item.id] then
self.registry.citations_by_item_id[cite_item.id] = {}
end
self.registry.citations_by_item_id[cite_item.id][citation.citationID] = true
end
-- self:updateItems(item_ids)
for i, cite_item in ipairs(citation.citationItems) do
self:get_item(cite_item.id)
end
local tainted_citation_ids = self:get_tainted_citaion_ids(citation_note_pairs)
local mode = citation.properties.mode
if mode == "suppress-author" and self.style.class == "note" then
mode = nil
end
local citation_elemement = self.style.citation
if mode == "author-only" and self.style.intext then
citation_elemement = self.style.intext
end
local citation_str = citation_elemement:build_citation_str(citation, self)
return citation_str
end
function CiteProc:get_tainted_citaion_ids(citation_note_pairs)
local tainted_citation_ids = {}
self.cite_first_note_numbers = {}
self.cite_last_note_numbers = {}
self.note_citations_map = {}
-- {
-- 1 = {"citation-1", "citation-2"},
-- 2 = {"citation-2"},
-- }
local previous_citation
for citation_index, pair in ipairs(citation_note_pairs) do
local citation_id, note_number = table.unpack(pair)
-- util.debug(citation_id)
local citation = self.registry.citations_by_id[citation_id]
citation.properties.noteIndex = note_number
citation.citation_index = citation_index
local tainted = false
local previous_cite
for _, cite_item in ipairs(citation.citationItems) do
tainted = self:set_cite_item_position(cite_item, note_number, previous_cite, previous_citation, citation)
-- https://citeproc-js.readthedocs.io/en/latest/csl-json/markup.html#citations
-- Citations within the main text of the document have a noteIndex of zero.
if (self.style.class == "note" and note_number > 0) or citation.properties.mode ~= "author-only" then
self.cite_last_note_numbers[cite_item.id] = note_number
previous_cite = cite_item
end
end
if tainted then
tainted_citation_ids[citation.citationID] = true
end
if not self.note_citations_map[note_number] then
self.note_citations_map[note_number] = {}
end
table.insert(self.note_citations_map[note_number], citation.citationID)
if citation.properties.mode ~= "author-only" then
previous_citation = citation
end
end
-- Update tainted citation ids because of citation-number's change
-- The self.tainted_item_ids were added in the sort_bibliography() procedure.
for item_id, _ in pairs(self.tainted_item_ids) do
if self.registry.citations_by_item_id[item_id] then
for citation_id, _ in pairs(self.registry.citations_by_item_id[item_id]) do
tainted_citation_ids[citation_id] = true
end
end
end
return tainted_citation_ids
end
function CiteProc:set_cite_item_position(cite_item, note_number, previous_cite, previous_citation, citation)
local position = util.position_map["first"]
-- https://citeproc-js.readthedocs.io/en/latest/csl-json/markup.html#citations
-- Citations within the main text of the document have a noteIndex of zero.
if self.style.class == "note" and note_number == 0 then
cite_item.position_level = position
return false
elseif citation.properties.mode == "author-only" then
-- discretionary_IbidInAuthorDateStyleWithoutIntext.txt
cite_item.position_level = position
return false
end
local first_reference_note_number = self.cite_first_note_numbers[cite_item.id]
if first_reference_note_number then
position = util.position_map["subsequent"]
else
self.cite_first_note_numbers[cite_item.id] = note_number
end
local preceding_cite_item = self:get_preceding_cite_item(cite_item, previous_cite, previous_citation, note_number)
if preceding_cite_item then
position = self:_get_cite_position(cite_item, preceding_cite_item)
end
local near_note = false
local last_note_number = self.cite_last_note_numbers[cite_item.id]
if last_note_number then
local note_distance = note_number - last_note_number
if note_distance <= self.style.citation.near_note_distance then
near_note = true
end
end
local tainted = false
if cite_item.position_level ~= position then
tainted = true
cite_item.position_level = position
end
if cite_item["first-reference-note-number"] ~= first_reference_note_number then
tainted = true
cite_item["first-reference-note-number"] = first_reference_note_number
end
if cite_item.near_note ~= near_note then
tainted = true
cite_item.near_note = near_note
end
return tainted
end
-- Find the preceding cite referencing the same item
function CiteProc:get_preceding_cite_item(cite_item, previous_cite, previous_citation, note_number)
if previous_cite then
-- a. the current cite immediately follows on another cite, within the same
-- citation, that references the same item
if cite_item.id == previous_cite.id then
return previous_cite
end
elseif previous_citation then
-- (hidden) The previous citation is the only one in the previous note.
-- See also
-- https://github.com/citation-style-language/documentation/issues/121
-- position_IbidWithMultipleSoloCitesInBackref.txt
-- b. the current cite is the first cite in the citation, and the previous
-- citation consists of a single cite referencing the same item
local previous_note_number = previous_citation.properties.noteIndex
local num_previous_note_citations = #self.note_citations_map[previous_note_number]
if (previous_note_number == note_number - 1 and num_previous_note_citations == 1)
or previous_note_number == note_number then
if #previous_citation.citationItems == 1 then
previous_cite = previous_citation.citationItems[1]
if previous_cite.id == cite_item.id then
return previous_cite
end
end
end
end
return nil
end
function CiteProc:_get_cite_position(item, preceding_cite)
if preceding_cite.locator then
if item.locator then
if item.locator == preceding_cite.locator and item.label == preceding_cite.label then
return util.position_map["ibid"]
else
return util.position_map["ibid-with-locator"]
end
else
return util.position_map["subsequent"]
end
else
if item.locator then
return util.position_map["ibid-with-locator"]
else
return util.position_map["ibid"]
end
end
end
function CiteProc:makeCitationCluster(citation_items)
local special_form = nil
local items = {}
for i, cite_item in ipairs(citation_items) do
cite_item = self:normalize_cite_item(cite_item)
local item_data = self:get_item(cite_item.id)
-- Create a wrapper of the orignal item from registry so that
-- it may hold different `locator` or `position` values for cites.
local item = setmetatable(cite_item, {__index = item_data})
if not special_form then
for _, form in ipairs({"author-only", "suppress-author", "coposite"}) do
if cite_item[form] then
special_form = form
end
end
end
item.position_level = util.position_map["first"]
if self.cite_first_note_numbers[cite_item.id] then
item.position_level = util.position_map["subsequent"]
else
self.cite_first_note_numbers[cite_item.id] = 0
end
local preceding_cite
if i == 1 then
local previous_citation = self.registry.previous_citation
if previous_citation then
if #previous_citation.citationItems == 1 and previous_citation.citationItems[1].id == item.id then
preceding_cite = previous_citation.citationItems[1]
end
end
elseif citation_items[i - 1].id == item.id then
preceding_cite = citation_items[i - 1]
end
if preceding_cite then
item.position_level = self:_get_cite_position(item, preceding_cite)
end
table.insert(items, item)
end
if self.registry.requires_sorting then
self:sort_bibliography()
end
local citation_element = self.style.citation
if special_form == "author-only" and self.style.intext then
citation_element = self.style.intext
end
local res = citation_element:build_cluster(items, self)
-- local context = {
-- build = {},
-- engine=self,
-- }
-- local res = self.style:render_citation(items, context)
self.registry.previous_citation = {
citationID = "pseudo-citation",
citationItems = items,
properties = {
noteIndex = 0,
}
}
return res
end
function CiteProc:makeBibliography(bibsection)
-- The bibsection works as a filter described in
-- <https://citeproc-js.readthedocs.io/en/latest/running.html#selective-output-with-makebibliography>.
if not self.style.bibliography then
return {{}, {}}
end
local res = {}
self.registry.widest_label = ""
self.registry.maxoffset = 0
local ids = self:get_sorted_refs()
if bibsection then
ids = self:filter_with_bibsection(ids, bibsection)
end
for _, id in ipairs(ids) do
local str = self.style.bibliography:build_bibliography_str(id, self)
table.insert(res, str)
end
local bib_start = self.output_format.markups["bibstart"]
local bib_end = self.output_format.markups["bibend"]
if type(bib_start) == "function" then
bib_start = bib_start(self)
end
if type(bib_end) == "function" then
bib_end = bib_end(self)
end
local params = {
hangingindent = self.style.bibliography.hanging_indent,
["second-field-align"] = self.style.bibliography.second_field_align ~= nil,
linespacing = self.style.bibliography.line_spacing,
entryspacing = self.style.bibliography.entry_spacing,
maxoffset = self.registry.maxoffset,
widest_label = self.registry.widest_label,
bibstart = bib_start,
bibend = bib_end,
entry_ids = util.clone(self.registry.reflist),
}
return {params, res}
end
function CiteProc:get_sorted_refs()
if self.registry.requires_sorting then
self:sort_bibliography()
end
return self.registry.reflist
end
function CiteProc:filter_with_bibsection(ids, bibsection)
if bibsection.quash then
return self:filter_quash(ids, bibsection)
elseif bibsection.select then
return self:filter_select(ids, bibsection)
elseif bibsection.include then
return self:filter_include(ids, bibsection)
elseif bibsection.exclude then
return self:filter_exclude(ids, bibsection)
else
return ids
end
end
function CiteProc:match_bibsection_object(item, bibsection_object)
local field = bibsection_object.field
local value = bibsection_object.value
-- util.debug(item.id)
-- util.debug(field)
-- util.debug(value)
-- util.debug(item[field])
local match = false
if value == "" then
if not item[field] or item[field] == "" then
match = true
end
else
if type(item[field]) == "table" then
if util.in_list(value, item[field]) then
match = true
end
elseif field == "keyword" then
if item.keyword and util.in_list(value, util.split(item.keyword, "%s*[;,]%s*")) then
match = true
end
elseif item[field] == value then
match = true
end
end
if bibsection_object.negative then
match = not match
end
-- util.debug(match)
return match
end
function CiteProc:filter_select(ids, bibsection)
-- Include the item if, and only if, all of the objects match.
local res = {}
for _, id in ipairs(ids) do
local item = self.registry.registry[id]
local match = true
for _, bibsection_object in ipairs(bibsection.select) do
if not self:match_bibsection_object(item, bibsection_object) then
match = false
break
end
end
if match then
table.insert(res, id)
end
end
return res
end
function CiteProc:filter_include(ids, bibsection)
-- Include the item if any of the objects match.
local res = {}
for _, id in ipairs(ids) do
local item = self.registry.registry[id]
local match = false
for _, bibsection_object in ipairs(bibsection.include) do
if self:match_bibsection_object(item, bibsection_object) then
match = true
break
end
end
if match then
table.insert(res, id)
end
end
return res
end
function CiteProc:filter_exclude(ids, bibsection)
-- Include the item if none of the objects match.
local res = {}
for _, id in ipairs(ids) do
local item = self.registry.registry[id]
local match = false
for _, bibsection_object in ipairs(bibsection.exclude) do
if self:match_bibsection_object(item, bibsection_object) then
match = true
break
end
end
if not match then
table.insert(res, id)
end
end
return res
end
function CiteProc:filter_quash(ids, bibsection)
-- Skip the item if all of the objects match.
local res = {}
for _, id in ipairs(ids) do
local item = self.registry.registry[id]
local match = true
for _, bibsection_object in ipairs(bibsection.quash) do
if not self:match_bibsection_object(item, bibsection_object) then
match = false
break
end
end
if not match then
table.insert(res, id)
end
end
return res
end
function CiteProc:set_output_format(format)
if format == "latex" then
self.output_format = LatexWriter:new()
elseif format == "html" then
self.output_format = HtmlWriter:new()
end
end
function CiteProc:enable_linking()
self.opt.wrap_url_and_doi = true
self.opt.citation_link = true
end
function CiteProc:disable_linking()
self.opt.wrap_url_and_doi = false
self.opt.citation_link = false
end
function CiteProc.create_element_tree(node)
local element_name = node:get_element_name()
local element_class = nodes[element_name]
local el = nil
if element_class then
el = element_class:from_node(node)
end
if el then
for i, child in ipairs(node:get_children()) do
if child:is_element() then
local child_element = CiteProc.create_element_tree(child)
if child_element then
if not el.children then
el.children = {}
end
table.insert(el.children, child_element)
end
end
end
end
return el
end
function CiteProc:get_item(id)
local item = self.registry.registry[id]
if not item then
item = self:_retrieve_item(id)
if not item then
return nil
end
item = self:process_extra_note(item)
table.insert(self.registry.reflist, id)
item["citation-number"] = #self.registry.reflist
self.registry.registry[id] = item
self.registry.requires_sorting = true
end
-- local res = {}
-- setmetatable(res, {__index = item})
-- return res
return item
end
function CiteProc:_retrieve_item(id)
-- Retrieve, copy, and normalize
local res = {}
local item = self.sys.retrieveItem(id)
if not item then
util.warning(string.format('Database entry "%s" not found', id))
return nil
end
-- TODO: normalize data input
item.id = tostring(item.id)
for key, value in pairs(item) do
res[key] = value
end
-- if res["page"] and not res["page-first"] then
-- local page_first = util.split(res["page"], "%s*[&,-]%s*")[1]
-- page_first = util.split(page_first, util.unicode["en dash"])[1]
-- res["page-first"] = page_first
-- end
return res
end
-- TODO: Nomalize all inputs
function CiteProc:process_extra_note(item)
if item.note then
local note_fields = {}
for _, line in ipairs(util.split(item.note, "%s*\r?\n%s*")) do
-- util.debug(line)
local splits = util.split(line, ":%s+", 1)
-- util.debug(splits)
if #splits == 2 then
local field, value = table.unpack(splits)
-- util.debug(field)
local variable_type = util.variable_types[field]
if not item[field] or field == "type" or variable_type == "date" then
if variable_type == "number" then
item[field] = value
elseif variable_type == "date" then
item[field] = util.parse_iso_date(value)
elseif variable_type == "name" then
if not note_fields[field] then
note_fields[field] = {}
end
table.insert(note_fields[field], util.parse_extra_name(value))
else
item[field] = value
end
end
end
end
for field, value in pairs(note_fields) do
item[field] = value
end
end
return item
end
function CiteProc:sort_bibliography()
-- Sort the items in registry according to the `sort` in `bibliography.`
-- This will update the `citation-number` of each item.
local bibliography_sort = nil
if self.style.bibliography and self.style.bibliography.sort then
bibliography_sort = self.style.bibliography.sort
end
if not bibliography_sort then
return
end
local items = {}
for _, id in ipairs(self.registry.reflist) do
table.insert(items, self.registry.registry[id])
end
local state = IrState:new()
local context = Context:new()
context.engine = self
context.style = self.style
context.area = self.style.bibliography
context.in_bibliography = true
context.locale = self:get_locale(self.lang)
context.name_inheritance = self.style.bibliography.name_inheritance
context.format = SortStringFormat:new()
-- context.id = id
context.cite = nil
-- context.reference = self:get_item(id)
bibliography_sort:sort(items, state, context)
self.registry.reflist = {}
self.tainted_item_ids = {}
for i, item in ipairs(items) do
if item["citation-number"] ~= i then
self.tainted_item_ids[item.id] = true
end
item["citation-number"] = i
self.registry.reflist[i] = item.id
end
self.registry.requires_sorting = false
end
function CiteProc:get_locale(lang)
lang = util.primary_dialects[lang] or lang
local locale = self.locales[lang] or self:get_merged_locales(lang)
return locale
end
function CiteProc:get_merged_locales(lang)
local fall_back_locales = {}
local language = string.sub(lang, 1, 2)
local primary_dialect = util.primary_dialects[language]
-- 1. In-style cs:locale elements
-- i. `xml:lang` set to chosen dialect, “de-AT”
table.insert(fall_back_locales, self.style.locales[lang])
-- ii. `xml:lang` set to matching language, “de” (German)
if language and language ~= lang then
table.insert(fall_back_locales, self.style.locales[language])
end
-- iii. `xml:lang` not set
table.insert(fall_back_locales, self.style.locales["@generic"])
-- 2. Locale files
-- iv. `xml:lang` set to chosen dialect, “de-AT”
if lang then
table.insert(fall_back_locales, self:get_system_locale(lang))
end
-- v. `xml:lang` set to matching primary dialect, “de-DE” (Standard German)
-- (only applicable when the chosen locale is a secondary dialect)
if primary_dialect and primary_dialect ~= lang then
table.insert(fall_back_locales, self:get_system_locale(primary_dialect))
end
-- vi. `xml:lang` set to “en-US” (American English)
if lang ~= "en-US" and primary_dialect ~= "en-US" then
table.insert(fall_back_locales, self:get_system_locale("en-US"))
end
-- Merge locales
local locale = Locale:new()
for i = #fall_back_locales, 1, -1 do
local fall_back_locale = fall_back_locales[i]
locale:merge(fall_back_locale)
end
self.locales[lang] = locale
return locale
end
function CiteProc:get_system_locale(lang)
local locale = self.system_locales[lang]
if locale then
return locale
end
local locale_str = self.sys.retrieveLocale(lang)
if not locale_str then
util.warning(string.format("Failed to retrieve locale \"%s\"", lang))
return nil
end
local locale_xml = dom.parse(locale_str)
local root_element = locale_xml:get_path("locale")[1]
locale = Locale:from_node(root_element)
self.system_locales[lang] = locale
return locale
end
function CiteProc:get_style_class()
if self.style and self.style.class then
return self.style.class
else
return nil
end
end
local Macro = Element:derive("macro")
function Macro:from_node(node)
local o = Macro:new()
o.children = {}
o:set_attribute(node, "name")
o:process_children_nodes(node)
return o
end
function Macro:build_ir(engine, state, context)
local ir = self:build_group_ir(engine, state, context)
return ir
end
engine.CiteProc = CiteProc
return engine
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