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-- filename : sort-ini.lua
-- comment : companion to sort-ini.tex
-- author : Hans Hagen, PRAGMA-ADE, Hasselt NL
-- copyright: PRAGMA ADE / ConTeXt Development Team
-- license : see context related readme files
-- todo:
--
-- out of range
-- uppercase
-- texutil compatible
-- always expand to utf
if not versions then versions = { } end versions['sort-ini'] = 1.001
sorters = { }
sorters.comparers = { }
sorters.splitters = { }
sorters.entries = { }
sorters.mappings = { }
sorters.replacements = { }
sorters.language = 'en'
function sorters.comparers.basic(a,b,i) -- [2] has entry, key, cmp
local sort_a, sort_b = a[2][i][3], b[2][i][3]
if #sort_a > #sort_b then
if #sort_b == 0 then
return 1
else
for i=1,#sort_b do
local ai, bi = sort_a[i], sort_b[i]
if ai > bi then
return 1
elseif ai < bi then
return -1
end
end
return 1
end
elseif #sort_a < #sort_b then
if #sort_a == 0 then
return -1
else
for i=1,#sort_a do
local ai, bi = sort_a[i], sort_b[i]
if ai > bi then
return 1
elseif ai < bi then
return -1
end
end
return -1
end
elseif #sort_a == 0 then
return 0
else
for i=1,#sort_a do
local ai, bi = sort_a[i], sort_b[i]
if ai > bi then
return 1
elseif ai < bi then
return -1
end
end
sort_a, sort_b = a[2][i][2], b[2][i][2]
if sort_a == "" then sort_a = a[2][i][1] end
if sort_b == "" then sort_b = b[2][i][1] end
if sort_a < sort_b then
return -1
elseif sort_a > sort_b then
return 1
else
return 0
end
end
end
function sorters.prepare(data,split,n)
local strip = sorters.strip
for k,v in ipairs(data) do
for i=1,n do
local vv = v[2][i]
if vv then
if vv[2] then
if vv[2] ~= "" then
vv[3] = split(strip(vv[2]))
else
vv[3] = split(strip(vv[1]))
end
else
vv[2] = { }
vv[3] = split(strip(vv[1]))
end
else
v[2][i] = { {}, {}, {} }
end
end
end
end
function sorters.strip(str) -- todo: only letters and such utf.gsub("([^%w%d])","")
str = str:gsub("\\%S*","")
str = str:gsub("[%s%[%](){}%$\"\']*","")
str = str:gsub("(%d+)",function(s) return (" "):rep(10-#s) .. s end) -- sort numbers properly
return str
end
sorters.defaultlanguage = 'en'
function sorters.splitters.utf(str)
local r = sorters.replacements[sorters.language] or sorters.replacements[sorters.defaultlanguage] or { }
local m = sorters.mappings [sorters.language] or sorters.mappings [sorters.defaultlanguage] or { }
local u = characters.uncompose
local b = utf.byte
local t = { }
for _,v in pairs(r) do
str = str:gsub(v[1],v[2])
end
for c in str:utfcharacters() do
if m[c] then
t[#t+1] = m[c]
elseif #c == 1 then
t[#t+1] = b(c)
else
for cc in string.characters(u(c)) do
t[#t+1] = m[cc] or b(cc)
end
end
end
return t
end
function sorters.sort(data,cmp)
table.sort(data,function(a,b) return cmp(a,b) == -1 end)
end
function sorters.cleanup(data)
for k,v in ipairs(data) do
for kk,vv in ipairs(v[2]) do
if vv and #vv[1] == 0 then
v[1][kk] = nil
else
vv[3] = nil
end
end
for kk,vv in pairs(v) do
if vv == "" then
v[kk] = nil
end
end
end
end
function sorters.unique(data)
local prev, last = nil, 0
for _,v in ipairs(data) do
if not prev or not table.are_equal(prev,v,2,3) then -- check range
last = last + 1
data[last] = v
prev = v
end
end
for i=last+1,#data do
data[i] = nil
end
end
function sorters.process(kind,data)
if data.entries then
if not data.sorted then
sorters.language = data.language or sorters.language
sorters[kind].prepare(data.entries)
sorters[kind].sort(data.entries)
sorters[kind].unique(data.entries)
data.sorted = true
end
return sorters[kind].flush(sorters[kind].finalize(data.entries),data.class,data.flush)
else
return { }
end
end
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