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-rw-r--r--tex/context/base/util-tab.lua986
1 files changed, 493 insertions, 493 deletions
diff --git a/tex/context/base/util-tab.lua b/tex/context/base/util-tab.lua
index ecf36b137..30554015b 100644
--- a/tex/context/base/util-tab.lua
+++ b/tex/context/base/util-tab.lua
@@ -1,493 +1,493 @@
-if not modules then modules = { } end modules ['util-tab'] = {
- version = 1.001,
- comment = "companion to luat-lib.mkiv",
- author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
- copyright = "PRAGMA ADE / ConTeXt Development Team",
- license = "see context related readme files"
-}
-
-utilities = utilities or {}
-utilities.tables = utilities.tables or { }
-local tables = utilities.tables
-
-local format, gmatch, gsub = string.format, string.gmatch, string.gsub
-local concat, insert, remove = table.concat, table.insert, table.remove
-local setmetatable, getmetatable, tonumber, tostring = setmetatable, getmetatable, tonumber, tostring
-local type, next, rawset, tonumber, tostring, load, select = type, next, rawset, tonumber, tostring, load, select
-local lpegmatch, P, Cs, Cc = lpeg.match, lpeg.P, lpeg.Cs, lpeg.Cc
-local serialize, sortedkeys, sortedpairs = table.serialize, table.sortedkeys, table.sortedpairs
-local formatters = string.formatters
-
-local splitter = lpeg.tsplitat(".")
-
-function tables.definetable(target,nofirst,nolast) -- defines undefined tables
- local composed, shortcut, t = nil, nil, { }
- local snippets = lpegmatch(splitter,target)
- for i=1,#snippets - (nolast and 1 or 0) do
- local name = snippets[i]
- if composed then
- composed = shortcut .. "." .. name
- shortcut = shortcut .. "_" .. name
- t[#t+1] = formatters["local %s = %s if not %s then %s = { } %s = %s end"](shortcut,composed,shortcut,shortcut,composed,shortcut)
- else
- composed = name
- shortcut = name
- if not nofirst then
- t[#t+1] = formatters["%s = %s or { }"](composed,composed)
- end
- end
- end
- if nolast then
- composed = shortcut .. "." .. snippets[#snippets]
- end
- return concat(t,"\n"), composed
-end
-
--- local t = tables.definedtable("a","b","c","d")
-
-function tables.definedtable(...)
- local t = _G
- for i=1,select("#",...) do
- local li = select(i,...)
- local tl = t[li]
- if not tl then
- tl = { }
- t[li] = tl
- end
- t = tl
- end
- return t
-end
-
-function tables.accesstable(target,root)
- local t = root or _G
- for name in gmatch(target,"([^%.]+)") do
- t = t[name]
- if not t then
- return
- end
- end
- return t
-end
-
-function tables.migratetable(target,v,root)
- local t = root or _G
- local names = string.split(target,".")
- for i=1,#names-1 do
- local name = names[i]
- t[name] = t[name] or { }
- t = t[name]
- if not t then
- return
- end
- end
- t[names[#names]] = v
-end
-
-function tables.removevalue(t,value) -- todo: n
- if value then
- for i=1,#t do
- if t[i] == value then
- remove(t,i)
- -- remove all, so no: return
- end
- end
- end
-end
-
-function tables.insertbeforevalue(t,value,extra)
- for i=1,#t do
- if t[i] == extra then
- remove(t,i)
- end
- end
- for i=1,#t do
- if t[i] == value then
- insert(t,i,extra)
- return
- end
- end
- insert(t,1,extra)
-end
-
-function tables.insertaftervalue(t,value,extra)
- for i=1,#t do
- if t[i] == extra then
- remove(t,i)
- end
- end
- for i=1,#t do
- if t[i] == value then
- insert(t,i+1,extra)
- return
- end
- end
- insert(t,#t+1,extra)
-end
-
--- experimental
-
-local escape = Cs(Cc('"') * ((P('"')/'""' + P(1))^0) * Cc('"'))
-
-function table.tocsv(t,specification)
- if t and #t > 0 then
- local result = { }
- local r = { }
- specification = specification or { }
- local fields = specification.fields
- if type(fields) ~= "string" then
- fields = sortedkeys(t[1])
- end
- local separator = specification.separator or ","
- if specification.preamble == true then
- for f=1,#fields do
- r[f] = lpegmatch(escape,tostring(fields[f]))
- end
- result[1] = concat(r,separator)
- end
- for i=1,#t do
- local ti = t[i]
- for f=1,#fields do
- local field = ti[fields[f]]
- if type(field) == "string" then
- r[f] = lpegmatch(escape,field)
- else
- r[f] = tostring(field)
- end
- end
- result[#result+1] = concat(r,separator)
- end
- return concat(result,"\n")
- else
- return ""
- end
-end
-
--- local nspaces = utilities.strings.newrepeater(" ")
--- local escape = Cs((P("<")/"&lt;" + P(">")/"&gt;" + P("&")/"&amp;" + P(1))^0)
---
--- local function toxml(t,d,result,step)
--- for k, v in sortedpairs(t) do
--- local s = nspaces[d]
--- local tk = type(k)
--- local tv = type(v)
--- if tv == "table" then
--- if tk == "number" then
--- result[#result+1] = format("%s<entry n='%s'>",s,k)
--- toxml(v,d+step,result,step)
--- result[#result+1] = format("%s</entry>",s,k)
--- else
--- result[#result+1] = format("%s<%s>",s,k)
--- toxml(v,d+step,result,step)
--- result[#result+1] = format("%s</%s>",s,k)
--- end
--- elseif tv == "string" then
--- if tk == "number" then
--- result[#result+1] = format("%s<entry n='%s'>%s</entry>",s,k,lpegmatch(escape,v),k)
--- else
--- result[#result+1] = format("%s<%s>%s</%s>",s,k,lpegmatch(escape,v),k)
--- end
--- elseif tk == "number" then
--- result[#result+1] = format("%s<entry n='%s'>%s</entry>",s,k,tostring(v),k)
--- else
--- result[#result+1] = format("%s<%s>%s</%s>",s,k,tostring(v),k)
--- end
--- end
--- end
---
--- much faster
-
-local nspaces = utilities.strings.newrepeater(" ")
-
-local function toxml(t,d,result,step)
- for k, v in sortedpairs(t) do
- local s = nspaces[d] -- inlining this is somewhat faster but gives more formatters
- local tk = type(k)
- local tv = type(v)
- if tv == "table" then
- if tk == "number" then
- result[#result+1] = formatters["%s<entry n='%s'>"](s,k)
- toxml(v,d+step,result,step)
- result[#result+1] = formatters["%s</entry>"](s,k)
- else
- result[#result+1] = formatters["%s<%s>"](s,k)
- toxml(v,d+step,result,step)
- result[#result+1] = formatters["%s</%s>"](s,k)
- end
- elseif tv == "string" then
- if tk == "number" then
- result[#result+1] = formatters["%s<entry n='%s'>%!xml!</entry>"](s,k,v,k)
- else
- result[#result+1] = formatters["%s<%s>%!xml!</%s>"](s,k,v,k)
- end
- elseif tk == "number" then
- result[#result+1] = formatters["%s<entry n='%s'>%S</entry>"](s,k,v,k)
- else
- result[#result+1] = formatters["%s<%s>%S</%s>"](s,k,v,k)
- end
- end
-end
-
--- function table.toxml(t,name,nobanner,indent,spaces)
--- local noroot = name == false
--- local result = (nobanner or noroot) and { } or { "<?xml version='1.0' standalone='yes' ?>" }
--- local indent = rep(" ",indent or 0)
--- local spaces = rep(" ",spaces or 1)
--- if noroot then
--- toxml( t, inndent, result, spaces)
--- else
--- toxml( { [name or "root"] = t }, indent, result, spaces)
--- end
--- return concat(result,"\n")
--- end
-
-function table.toxml(t,specification)
- specification = specification or { }
- local name = specification.name
- local noroot = name == false
- local result = (specification.nobanner or noroot) and { } or { "<?xml version='1.0' standalone='yes' ?>" }
- local indent = specification.indent or 0
- local spaces = specification.spaces or 1
- if noroot then
- toxml( t, indent, result, spaces)
- else
- toxml( { [name or "data"] = t }, indent, result, spaces)
- end
- return concat(result,"\n")
-end
-
--- also experimental
-
--- encapsulate(table,utilities.tables)
--- encapsulate(table,utilities.tables,true)
--- encapsulate(table,true)
-
-function tables.encapsulate(core,capsule,protect)
- if type(capsule) ~= "table" then
- protect = true
- capsule = { }
- end
- for key, value in next, core do
- if capsule[key] then
- print(formatters["\ninvalid %s %a in %a"]("inheritance",key,core))
- os.exit()
- else
- capsule[key] = value
- end
- end
- if protect then
- for key, value in next, core do
- core[key] = nil
- end
- setmetatable(core, {
- __index = capsule,
- __newindex = function(t,key,value)
- if capsule[key] then
- print(formatters["\ninvalid %s %a' in %a"]("overload",key,core))
- os.exit()
- else
- rawset(t,key,value)
- end
- end
- } )
- end
-end
-
-local function fastserialize(t,r,outer) -- no mixes
- r[#r+1] = "{"
- local n = #t
- if n > 0 then
- for i=1,n do
- local v = t[i]
- local tv = type(v)
- if tv == "string" then
- r[#r+1] = formatters["%q,"](v)
- elseif tv == "number" then
- r[#r+1] = formatters["%s,"](v)
- elseif tv == "table" then
- fastserialize(v,r)
- elseif tv == "boolean" then
- r[#r+1] = formatters["%S,"](v)
- end
- end
- else
- for k, v in next, t do
- local tv = type(v)
- if tv == "string" then
- r[#r+1] = formatters["[%q]=%q,"](k,v)
- elseif tv == "number" then
- r[#r+1] = formatters["[%q]=%s,"](k,v)
- elseif tv == "table" then
- r[#r+1] = formatters["[%q]="](k)
- fastserialize(v,r)
- elseif tv == "boolean" then
- r[#r+1] = formatters["[%q]=%S,"](k,v)
- end
- end
- end
- if outer then
- r[#r+1] = "}"
- else
- r[#r+1] = "},"
- end
- return r
-end
-
--- local f_hashed_string = formatters["[%q]=%q,"]
--- local f_hashed_number = formatters["[%q]=%s,"]
--- local f_hashed_table = formatters["[%q]="]
--- local f_hashed_true = formatters["[%q]=true,"]
--- local f_hashed_false = formatters["[%q]=false,"]
---
--- local f_indexed_string = formatters["%q,"]
--- local f_indexed_number = formatters["%s,"]
--- ----- f_indexed_true = formatters["true,"]
--- ----- f_indexed_false = formatters["false,"]
---
--- local function fastserialize(t,r,outer) -- no mixes
--- r[#r+1] = "{"
--- local n = #t
--- if n > 0 then
--- for i=1,n do
--- local v = t[i]
--- local tv = type(v)
--- if tv == "string" then
--- r[#r+1] = f_indexed_string(v)
--- elseif tv == "number" then
--- r[#r+1] = f_indexed_number(v)
--- elseif tv == "table" then
--- fastserialize(v,r)
--- elseif tv == "boolean" then
--- -- r[#r+1] = v and f_indexed_true(k) or f_indexed_false(k)
--- r[#r+1] = v and "true," or "false,"
--- end
--- end
--- else
--- for k, v in next, t do
--- local tv = type(v)
--- if tv == "string" then
--- r[#r+1] = f_hashed_string(k,v)
--- elseif tv == "number" then
--- r[#r+1] = f_hashed_number(k,v)
--- elseif tv == "table" then
--- r[#r+1] = f_hashed_table(k)
--- fastserialize(v,r)
--- elseif tv == "boolean" then
--- r[#r+1] = v and f_hashed_true(k) or f_hashed_false(k)
--- end
--- end
--- end
--- if outer then
--- r[#r+1] = "}"
--- else
--- r[#r+1] = "},"
--- end
--- return r
--- end
-
-function table.fastserialize(t,prefix) -- so prefix should contain the =
- return concat(fastserialize(t,{ prefix or "return" },true))
-end
-
-function table.deserialize(str)
- if not str or str == "" then
- return
- end
- local code = load(str)
- if not code then
- return
- end
- code = code()
- if not code then
- return
- end
- return code
-end
-
--- inspect(table.fastserialize { a = 1, b = { 4, { 5, 6 } }, c = { d = 7, e = 'f"g\nh' } })
-
-function table.load(filename)
- if filename then
- local t = io.loaddata(filename)
- if t and t ~= "" then
- t = load(t)
- if type(t) == "function" then
- t = t()
- if type(t) == "table" then
- return t
- end
- end
- end
- end
-end
-
-function table.save(filename,t,n,...)
- io.savedata(filename,serialize(t,n == nil and true or n,...))
-end
-
-local function slowdrop(t)
- local r = { }
- local l = { }
- for i=1,#t do
- local ti = t[i]
- local j = 0
- for k, v in next, ti do
- j = j + 1
- l[j] = formatters["%s=%q"](k,v)
- end
- r[i] = formatters[" {%t},\n"](l)
- end
- return formatters["return {\n%st}"](r)
-end
-
-local function fastdrop(t)
- local r = { "return {\n" }
- for i=1,#t do
- local ti = t[i]
- r[#r+1] = " {"
- for k, v in next, ti do
- r[#r+1] = formatters["%s=%q"](k,v)
- end
- r[#r+1] = "},\n"
- end
- r[#r+1] = "}"
- return concat(r)
-end
-
-function table.drop(t,slow) -- only { { a=2 }, {a=3} }
- if #t == 0 then
- return "return { }"
- elseif slow == true then
- return slowdrop(t) -- less memory
- else
- return fastdrop(t) -- some 15% faster
- end
-end
-
-function table.autokey(t,k)
- local v = { }
- t[k] = v
- return v
-end
-
-local selfmapper = { __index = function(t,k) t[k] = k return k end }
-
-function table.twowaymapper(t)
- if not t then
- t = { }
- else
- for i=0,#t do
- local ti = t[i] -- t[1] = "one"
- if ti then
- local i = tostring(i)
- t[i] = ti -- t["1"] = "one"
- t[ti] = i -- t["one"] = "1"
- end
- end
- t[""] = t[0] or ""
- end
- -- setmetatableindex(t,"key")
- setmetatable(t,selfmapper)
- return t
-end
-
+if not modules then modules = { } end modules ['util-tab'] = {
+ version = 1.001,
+ comment = "companion to luat-lib.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+utilities = utilities or {}
+utilities.tables = utilities.tables or { }
+local tables = utilities.tables
+
+local format, gmatch, gsub = string.format, string.gmatch, string.gsub
+local concat, insert, remove = table.concat, table.insert, table.remove
+local setmetatable, getmetatable, tonumber, tostring = setmetatable, getmetatable, tonumber, tostring
+local type, next, rawset, tonumber, tostring, load, select = type, next, rawset, tonumber, tostring, load, select
+local lpegmatch, P, Cs, Cc = lpeg.match, lpeg.P, lpeg.Cs, lpeg.Cc
+local serialize, sortedkeys, sortedpairs = table.serialize, table.sortedkeys, table.sortedpairs
+local formatters = string.formatters
+
+local splitter = lpeg.tsplitat(".")
+
+function tables.definetable(target,nofirst,nolast) -- defines undefined tables
+ local composed, shortcut, t = nil, nil, { }
+ local snippets = lpegmatch(splitter,target)
+ for i=1,#snippets - (nolast and 1 or 0) do
+ local name = snippets[i]
+ if composed then
+ composed = shortcut .. "." .. name
+ shortcut = shortcut .. "_" .. name
+ t[#t+1] = formatters["local %s = %s if not %s then %s = { } %s = %s end"](shortcut,composed,shortcut,shortcut,composed,shortcut)
+ else
+ composed = name
+ shortcut = name
+ if not nofirst then
+ t[#t+1] = formatters["%s = %s or { }"](composed,composed)
+ end
+ end
+ end
+ if nolast then
+ composed = shortcut .. "." .. snippets[#snippets]
+ end
+ return concat(t,"\n"), composed
+end
+
+-- local t = tables.definedtable("a","b","c","d")
+
+function tables.definedtable(...)
+ local t = _G
+ for i=1,select("#",...) do
+ local li = select(i,...)
+ local tl = t[li]
+ if not tl then
+ tl = { }
+ t[li] = tl
+ end
+ t = tl
+ end
+ return t
+end
+
+function tables.accesstable(target,root)
+ local t = root or _G
+ for name in gmatch(target,"([^%.]+)") do
+ t = t[name]
+ if not t then
+ return
+ end
+ end
+ return t
+end
+
+function tables.migratetable(target,v,root)
+ local t = root or _G
+ local names = string.split(target,".")
+ for i=1,#names-1 do
+ local name = names[i]
+ t[name] = t[name] or { }
+ t = t[name]
+ if not t then
+ return
+ end
+ end
+ t[names[#names]] = v
+end
+
+function tables.removevalue(t,value) -- todo: n
+ if value then
+ for i=1,#t do
+ if t[i] == value then
+ remove(t,i)
+ -- remove all, so no: return
+ end
+ end
+ end
+end
+
+function tables.insertbeforevalue(t,value,extra)
+ for i=1,#t do
+ if t[i] == extra then
+ remove(t,i)
+ end
+ end
+ for i=1,#t do
+ if t[i] == value then
+ insert(t,i,extra)
+ return
+ end
+ end
+ insert(t,1,extra)
+end
+
+function tables.insertaftervalue(t,value,extra)
+ for i=1,#t do
+ if t[i] == extra then
+ remove(t,i)
+ end
+ end
+ for i=1,#t do
+ if t[i] == value then
+ insert(t,i+1,extra)
+ return
+ end
+ end
+ insert(t,#t+1,extra)
+end
+
+-- experimental
+
+local escape = Cs(Cc('"') * ((P('"')/'""' + P(1))^0) * Cc('"'))
+
+function table.tocsv(t,specification)
+ if t and #t > 0 then
+ local result = { }
+ local r = { }
+ specification = specification or { }
+ local fields = specification.fields
+ if type(fields) ~= "string" then
+ fields = sortedkeys(t[1])
+ end
+ local separator = specification.separator or ","
+ if specification.preamble == true then
+ for f=1,#fields do
+ r[f] = lpegmatch(escape,tostring(fields[f]))
+ end
+ result[1] = concat(r,separator)
+ end
+ for i=1,#t do
+ local ti = t[i]
+ for f=1,#fields do
+ local field = ti[fields[f]]
+ if type(field) == "string" then
+ r[f] = lpegmatch(escape,field)
+ else
+ r[f] = tostring(field)
+ end
+ end
+ result[#result+1] = concat(r,separator)
+ end
+ return concat(result,"\n")
+ else
+ return ""
+ end
+end
+
+-- local nspaces = utilities.strings.newrepeater(" ")
+-- local escape = Cs((P("<")/"&lt;" + P(">")/"&gt;" + P("&")/"&amp;" + P(1))^0)
+--
+-- local function toxml(t,d,result,step)
+-- for k, v in sortedpairs(t) do
+-- local s = nspaces[d]
+-- local tk = type(k)
+-- local tv = type(v)
+-- if tv == "table" then
+-- if tk == "number" then
+-- result[#result+1] = format("%s<entry n='%s'>",s,k)
+-- toxml(v,d+step,result,step)
+-- result[#result+1] = format("%s</entry>",s,k)
+-- else
+-- result[#result+1] = format("%s<%s>",s,k)
+-- toxml(v,d+step,result,step)
+-- result[#result+1] = format("%s</%s>",s,k)
+-- end
+-- elseif tv == "string" then
+-- if tk == "number" then
+-- result[#result+1] = format("%s<entry n='%s'>%s</entry>",s,k,lpegmatch(escape,v),k)
+-- else
+-- result[#result+1] = format("%s<%s>%s</%s>",s,k,lpegmatch(escape,v),k)
+-- end
+-- elseif tk == "number" then
+-- result[#result+1] = format("%s<entry n='%s'>%s</entry>",s,k,tostring(v),k)
+-- else
+-- result[#result+1] = format("%s<%s>%s</%s>",s,k,tostring(v),k)
+-- end
+-- end
+-- end
+--
+-- much faster
+
+local nspaces = utilities.strings.newrepeater(" ")
+
+local function toxml(t,d,result,step)
+ for k, v in sortedpairs(t) do
+ local s = nspaces[d] -- inlining this is somewhat faster but gives more formatters
+ local tk = type(k)
+ local tv = type(v)
+ if tv == "table" then
+ if tk == "number" then
+ result[#result+1] = formatters["%s<entry n='%s'>"](s,k)
+ toxml(v,d+step,result,step)
+ result[#result+1] = formatters["%s</entry>"](s,k)
+ else
+ result[#result+1] = formatters["%s<%s>"](s,k)
+ toxml(v,d+step,result,step)
+ result[#result+1] = formatters["%s</%s>"](s,k)
+ end
+ elseif tv == "string" then
+ if tk == "number" then
+ result[#result+1] = formatters["%s<entry n='%s'>%!xml!</entry>"](s,k,v,k)
+ else
+ result[#result+1] = formatters["%s<%s>%!xml!</%s>"](s,k,v,k)
+ end
+ elseif tk == "number" then
+ result[#result+1] = formatters["%s<entry n='%s'>%S</entry>"](s,k,v,k)
+ else
+ result[#result+1] = formatters["%s<%s>%S</%s>"](s,k,v,k)
+ end
+ end
+end
+
+-- function table.toxml(t,name,nobanner,indent,spaces)
+-- local noroot = name == false
+-- local result = (nobanner or noroot) and { } or { "<?xml version='1.0' standalone='yes' ?>" }
+-- local indent = rep(" ",indent or 0)
+-- local spaces = rep(" ",spaces or 1)
+-- if noroot then
+-- toxml( t, inndent, result, spaces)
+-- else
+-- toxml( { [name or "root"] = t }, indent, result, spaces)
+-- end
+-- return concat(result,"\n")
+-- end
+
+function table.toxml(t,specification)
+ specification = specification or { }
+ local name = specification.name
+ local noroot = name == false
+ local result = (specification.nobanner or noroot) and { } or { "<?xml version='1.0' standalone='yes' ?>" }
+ local indent = specification.indent or 0
+ local spaces = specification.spaces or 1
+ if noroot then
+ toxml( t, indent, result, spaces)
+ else
+ toxml( { [name or "data"] = t }, indent, result, spaces)
+ end
+ return concat(result,"\n")
+end
+
+-- also experimental
+
+-- encapsulate(table,utilities.tables)
+-- encapsulate(table,utilities.tables,true)
+-- encapsulate(table,true)
+
+function tables.encapsulate(core,capsule,protect)
+ if type(capsule) ~= "table" then
+ protect = true
+ capsule = { }
+ end
+ for key, value in next, core do
+ if capsule[key] then
+ print(formatters["\ninvalid %s %a in %a"]("inheritance",key,core))
+ os.exit()
+ else
+ capsule[key] = value
+ end
+ end
+ if protect then
+ for key, value in next, core do
+ core[key] = nil
+ end
+ setmetatable(core, {
+ __index = capsule,
+ __newindex = function(t,key,value)
+ if capsule[key] then
+ print(formatters["\ninvalid %s %a' in %a"]("overload",key,core))
+ os.exit()
+ else
+ rawset(t,key,value)
+ end
+ end
+ } )
+ end
+end
+
+local function fastserialize(t,r,outer) -- no mixes
+ r[#r+1] = "{"
+ local n = #t
+ if n > 0 then
+ for i=1,n do
+ local v = t[i]
+ local tv = type(v)
+ if tv == "string" then
+ r[#r+1] = formatters["%q,"](v)
+ elseif tv == "number" then
+ r[#r+1] = formatters["%s,"](v)
+ elseif tv == "table" then
+ fastserialize(v,r)
+ elseif tv == "boolean" then
+ r[#r+1] = formatters["%S,"](v)
+ end
+ end
+ else
+ for k, v in next, t do
+ local tv = type(v)
+ if tv == "string" then
+ r[#r+1] = formatters["[%q]=%q,"](k,v)
+ elseif tv == "number" then
+ r[#r+1] = formatters["[%q]=%s,"](k,v)
+ elseif tv == "table" then
+ r[#r+1] = formatters["[%q]="](k)
+ fastserialize(v,r)
+ elseif tv == "boolean" then
+ r[#r+1] = formatters["[%q]=%S,"](k,v)
+ end
+ end
+ end
+ if outer then
+ r[#r+1] = "}"
+ else
+ r[#r+1] = "},"
+ end
+ return r
+end
+
+-- local f_hashed_string = formatters["[%q]=%q,"]
+-- local f_hashed_number = formatters["[%q]=%s,"]
+-- local f_hashed_table = formatters["[%q]="]
+-- local f_hashed_true = formatters["[%q]=true,"]
+-- local f_hashed_false = formatters["[%q]=false,"]
+--
+-- local f_indexed_string = formatters["%q,"]
+-- local f_indexed_number = formatters["%s,"]
+-- ----- f_indexed_true = formatters["true,"]
+-- ----- f_indexed_false = formatters["false,"]
+--
+-- local function fastserialize(t,r,outer) -- no mixes
+-- r[#r+1] = "{"
+-- local n = #t
+-- if n > 0 then
+-- for i=1,n do
+-- local v = t[i]
+-- local tv = type(v)
+-- if tv == "string" then
+-- r[#r+1] = f_indexed_string(v)
+-- elseif tv == "number" then
+-- r[#r+1] = f_indexed_number(v)
+-- elseif tv == "table" then
+-- fastserialize(v,r)
+-- elseif tv == "boolean" then
+-- -- r[#r+1] = v and f_indexed_true(k) or f_indexed_false(k)
+-- r[#r+1] = v and "true," or "false,"
+-- end
+-- end
+-- else
+-- for k, v in next, t do
+-- local tv = type(v)
+-- if tv == "string" then
+-- r[#r+1] = f_hashed_string(k,v)
+-- elseif tv == "number" then
+-- r[#r+1] = f_hashed_number(k,v)
+-- elseif tv == "table" then
+-- r[#r+1] = f_hashed_table(k)
+-- fastserialize(v,r)
+-- elseif tv == "boolean" then
+-- r[#r+1] = v and f_hashed_true(k) or f_hashed_false(k)
+-- end
+-- end
+-- end
+-- if outer then
+-- r[#r+1] = "}"
+-- else
+-- r[#r+1] = "},"
+-- end
+-- return r
+-- end
+
+function table.fastserialize(t,prefix) -- so prefix should contain the =
+ return concat(fastserialize(t,{ prefix or "return" },true))
+end
+
+function table.deserialize(str)
+ if not str or str == "" then
+ return
+ end
+ local code = load(str)
+ if not code then
+ return
+ end
+ code = code()
+ if not code then
+ return
+ end
+ return code
+end
+
+-- inspect(table.fastserialize { a = 1, b = { 4, { 5, 6 } }, c = { d = 7, e = 'f"g\nh' } })
+
+function table.load(filename)
+ if filename then
+ local t = io.loaddata(filename)
+ if t and t ~= "" then
+ t = load(t)
+ if type(t) == "function" then
+ t = t()
+ if type(t) == "table" then
+ return t
+ end
+ end
+ end
+ end
+end
+
+function table.save(filename,t,n,...)
+ io.savedata(filename,serialize(t,n == nil and true or n,...))
+end
+
+local function slowdrop(t)
+ local r = { }
+ local l = { }
+ for i=1,#t do
+ local ti = t[i]
+ local j = 0
+ for k, v in next, ti do
+ j = j + 1
+ l[j] = formatters["%s=%q"](k,v)
+ end
+ r[i] = formatters[" {%t},\n"](l)
+ end
+ return formatters["return {\n%st}"](r)
+end
+
+local function fastdrop(t)
+ local r = { "return {\n" }
+ for i=1,#t do
+ local ti = t[i]
+ r[#r+1] = " {"
+ for k, v in next, ti do
+ r[#r+1] = formatters["%s=%q"](k,v)
+ end
+ r[#r+1] = "},\n"
+ end
+ r[#r+1] = "}"
+ return concat(r)
+end
+
+function table.drop(t,slow) -- only { { a=2 }, {a=3} }
+ if #t == 0 then
+ return "return { }"
+ elseif slow == true then
+ return slowdrop(t) -- less memory
+ else
+ return fastdrop(t) -- some 15% faster
+ end
+end
+
+function table.autokey(t,k)
+ local v = { }
+ t[k] = v
+ return v
+end
+
+local selfmapper = { __index = function(t,k) t[k] = k return k end }
+
+function table.twowaymapper(t)
+ if not t then
+ t = { }
+ else
+ for i=0,#t do
+ local ti = t[i] -- t[1] = "one"
+ if ti then
+ local i = tostring(i)
+ t[i] = ti -- t["1"] = "one"
+ t[ti] = i -- t["one"] = "1"
+ end
+ end
+ t[""] = t[0] or ""
+ end
+ -- setmetatableindex(t,"key")
+ setmetatable(t,selfmapper)
+ return t
+end
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 23:19:52 +0000