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Copy pathutils.lua
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543 lines (496 loc) · 12.9 KB
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local _ENV = mkmodule('utils')
local df = df
-- Comparator function
function compare(a,b)
if a < b then
return -1
elseif a > b then
return 1
else
return 0
end
end
-- Sort strings; compare empty last
function compare_name(a,b)
if a == '' then
if b == '' then
return 0
else
return 1
end
elseif b == '' then
return -1
else
return compare(a,b)
end
end
-- Make a field comparator
function compare_field(field,cmp)
cmp = cmp or compare
if field then
return function (a,b)
return cmp(a[field],b[field])
end
else
return cmp
end
end
-- Make a comparator of field vs key
function compare_field_key(field,cmp)
cmp = cmp or compare
if field then
return function (a,b)
return cmp(a[field],b)
end
else
return cmp
end
end
function is_container(obj)
return df.isvalid(obj) == 'ref' and obj._kind == 'container'
end
-- Make a sequence of numbers in 1..size
function make_index_sequence(istart,iend)
local index = {}
for i=istart,iend do
index[i-istart+1] = i
end
return index
end
--[[
Sort items in data according to ordering.
Each ordering spec is a table with possible fields:
* key = function(value)
Computes comparison key from a data value. Not called on nil.
* key_table = function(data)
Computes a key table from the data table in one go.
* compare = function(a,b)
Comparison function. Defaults to compare above.
Called on non-nil keys; nil sorts last.
* nil_first
If true, nil keys are sorted first instead of last.
* reverse
If true, sort non-nil keys in descending order.
Returns a table of integer indices into data.
--]]
function make_sort_order(data,ordering)
-- Compute sort keys and comparators
local keys = {}
local cmps = {}
local size = data.n or #data
for i=1,#ordering do
local order = ordering[i]
if order.key_table then
keys[i] = order.key_table(data)
elseif order.key then
local kt = {}
local kf = order.key
for j=1,size do
if data[j] == nil then
kt[j] = nil
else
kt[j] = kf(data[j])
end
end
keys[i] = kt
else
keys[i] = data
end
cmps[i] = order.compare or compare
end
-- Make an order table
local index = make_index_sequence(1,size)
-- Sort the ordering table
table.sort(index, function(ia,ib)
for i=1,#keys do
local ka = keys[i][ia]
local kb = keys[i][ib]
-- Sort nil keys to the end
if ka == nil then
if kb ~= nil then
return ordering[i].nil_first
end
elseif kb == nil then
return not ordering[i].nil_first
else
local cmpv = cmps[i](ka,kb)
if ordering[i].reverse then
cmpv = -cmpv
end
if cmpv < 0 then
return true
elseif cmpv > 0 then
return false
end
end
end
return ia < ib -- this should ensure stable sort
end)
return index
end
--[[
Iterate a 'list' structure, e.g. df.global.world.job_list
--]]
local function next_df_list(s,link)
link = link.next
if link then
return link, link.item
end
end
function listpairs(list)
return next_df_list, nil, list
end
--[[
Recursively assign data into a table.
--]]
function assign(tgt,src)
if df.isvalid(tgt) == 'ref' then
df.assign(tgt, src)
elseif type(tgt) == 'table' then
for k,v in pairs(src) do
if type(v) == 'table' then
local cv = tgt[k]
if cv == nil then
cv = {}
tgt[k] = cv
end
assign(cv, v)
else
tgt[k] = v
end
end
else
error('Invalid assign target type: '..tostring(tgt))
end
return tgt
end
local function copy_field(obj,k,v,deep)
if v == nil then
return NULL
end
if deep then
local field = obj:_field(k)
if field == v then
return clone(v,deep)
end
end
return v
end
-- Copy the object as lua data structures.
function clone(obj,deep)
if type(obj) == 'table' then
if deep then
return assign({},obj)
else
return copyall(obj)
end
elseif df.isvalid(obj) == 'ref' then
local kind = obj._kind
if kind == 'primitive' then
return obj.value
elseif kind == 'bitfield' then
local rv = {}
for k,v in pairs(obj) do
rv[k] = v
end
return rv
elseif kind == 'container' then
local rv = {}
for k,v in ipairs(obj) do
rv[k+1] = copy_field(obj,k,v,deep)
end
return rv
else -- struct
local rv = {}
for k,v in pairs(obj) do
rv[k] = copy_field(obj,k,v,deep)
end
return rv
end
else
return obj
end
end
local function get_default(default,key,base)
if type(default) == 'table' then
local dv = default[key]
if dv == nil then
dv = default._default
end
if dv == nil then
dv = base
end
return dv
else
return default
end
end
-- Copy the object as lua data structures, skipping values matching defaults.
function clone_with_default(obj,default,force)
local rv = nil
local function setrv(k,v)
if v ~= nil then
if rv == nil then
rv = {}
end
rv[k] = v
end
end
if default == nil then
return nil
elseif type(obj) == 'table' then
for k,v in pairs(obj) do
setrv(k, clone_with_default(v, get_default(default,k)))
end
elseif df.isvalid(obj) == 'ref' then
local kind = obj._kind
if kind == 'primitive' then
return clone_with_default(obj.value,default,force)
elseif kind == 'bitfield' then
for k,v in pairs(obj) do
setrv(k, clone_with_default(v, get_default(default,k,false)))
end
elseif kind == 'container' then
for k,v in ipairs(obj) do
setrv(k+1, clone_with_default(v, default, true))
end
else -- struct
for k,v in pairs(obj) do
setrv(k, clone_with_default(v, get_default(default,k)))
end
end
elseif obj == default and not force then
return nil
elseif obj == nil then
return NULL
else
return obj
end
if force and rv == nil then
rv = {}
end
return rv
end
-- Parse an integer value into a bitfield table
function parse_bitfield_int(value, type_ref)
if value == 0 then
return nil
end
local res = {}
for i,v in ipairs(type_ref) do
if bit32.extract(value, i) ~= 0 then
res[v] = true
end
end
return res
end
-- List the enabled flag names in the bitfield table
function list_bitfield_flags(bitfield, list)
list = list or {}
if bitfield then
for name,val in pairs(bitfield) do
if val then
table.insert(list, name)
end
end
end
return list
end
-- Sort a vector or lua table
function sort_vector(vector,field,cmp)
local fcmp = compare_field(field,cmp)
local scmp = function(a,b)
return fcmp(a,b) < 0
end
if df.isvalid(vector) then
if vector._kind ~= 'container' then
error('Container expected: '..tostring(vector))
end
local items = clone(vector, true)
table.sort(items, scmp)
vector:assign(items)
else
table.sort(vector, scmp)
end
return vector
end
-- Linear search
function linear_index(vector,key,field)
local min,max
if df.isvalid(vector) then
min,max = 0,#vector-1
else
min,max = 1,#vector
end
if field then
for i=min,max do
local obj = vector[i]
if obj[field] == key then
return i, obj
end
end
else
for i=min,max do
local obj = vector[i]
if obj == key then
return i, obj
end
end
end
return nil
end
-- Binary search in a vector or lua table
function binsearch(vector,key,field,cmp,min,max)
if not(min and max) then
if df.isvalid(vector) then
min = -1
max = #vector
else
min = 0
max = #vector+1
end
end
local mf = math.floor
local fcmp = compare_field_key(field,cmp)
while true do
local mid = mf((min+max)/2)
if mid <= min then
return nil, false, max
end
local item = vector[mid]
local cv = fcmp(item, key)
if cv == 0 then
return item, true, mid
elseif cv < 0 then
min = mid
else
max = mid
end
end
end
-- Binary search and insert
function insert_sorted(vector,item,field,cmp)
local key = item
if field and item then
key = item[field]
end
local cur,found,pos = binsearch(vector,key,field,cmp)
if found then
return false,cur,pos
else
if df.isvalid(vector) then
vector:insert(pos, item)
else
table.insert(vector, pos, item)
end
return true,vector[pos],pos
end
end
-- Binary search, then insert or overwrite
function insert_or_update(vector,item,field,cmp)
local added,cur,pos = insert_sorted(vector,item,field,cmp)
if not added then
vector[pos] = item
cur = vector[pos]
end
return added,cur,pos
end
-- Binary search and erase
function erase_sorted_key(vector,key,field,cmp)
local cur,found,pos = binsearch(vector,key,field,cmp)
if found then
if df.isvalid(vector) then
vector:erase(pos)
else
table.remove(vector, pos)
end
end
return found,cur,pos
end
function erase_sorted(vector,item,field,cmp)
local key = item
if field and item then
key = item[field]
end
return erase_sorted_key(vector,key,field,cmp)
end
-- Calls a method with a string temporary
function call_with_string(obj,methodname,...)
return dfhack.with_temp_object(
df.new "string",
function(str,obj,methodname,...)
obj[methodname](obj,str,...)
return str.value
end,
obj,methodname,...
)
end
function getBuildingName(building)
return call_with_string(building, 'getName')
end
function getBuildingCenter(building)
return xyz2pos(building.centerx, building.centery, building.z)
end
function getItemDescription(item,mode)
return call_with_string(item, 'getItemDescription', mode or 0)
end
function getItemDescriptionPrefix(item,mode)
return call_with_string(item, 'getItemDescriptionPrefix', mode or 0)
end
-- Split the string by the given delimiter
function split_string(self, delimiter)
local result = { }
local from = 1
local delim_from, delim_to = string.find( self, delimiter, from )
while delim_from do
table.insert( result, string.sub( self, from , delim_from-1 ) )
from = delim_to + 1
delim_from, delim_to = string.find( self, delimiter, from )
end
table.insert( result, string.sub( self, from ) )
return result
end
-- Ask a yes-no question
function prompt_yes_no(msg,default)
local prompt = msg
if default == nil then
prompt = prompt..' (y/n): '
elseif default then
prompt = prompt..' (y/n)[y]: '
else
prompt = prompt..' (y/n)[n]: '
end
while true do
local rv = dfhack.lineedit(prompt)
if rv then
if string.match(rv,'^[Yy]') then
return true
elseif string.match(rv,'^[Nn]') then
return false
elseif rv == 'abort' then
qerror('User abort')
elseif rv == '' and default ~= nil then
return default
end
end
end
end
-- Ask for input with check function
function prompt_input(prompt,check,quit_str)
quit_str = quit_str or '~~~'
while true do
local rv = dfhack.lineedit(prompt)
if rv == quit_str then
qerror('User abort')
end
local rtbl = table.pack(check(rv))
if rtbl[1] then
return table.unpack(rtbl,2,rtbl.n)
end
end
end
function check_number(text)
local nv = tonumber(text)
return nv ~= nil, nv
end
return _ENV
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