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-- This file: http://anggtwu.net/LUA/lua50init.lua.html
-- http://anggtwu.net/LATEX/dednat6/edrxlib.lua.html
-- http://anggtwu.net/dednat6/dednat6/edrxlib.lua.html
-- http://anggtwu.net/blogme3/edrxlib.lua.html
-- http://anggtwu.net/emlua/edrxlib.lua.html
--
-- This is my "init file" for Lua. As I have LUA_INIT set
-- to "@$HOME/LUA/lua50init.lua", the Lua interpreter loads
-- this on start-up.
-- See: (find-angg ".zshrc" "lua" "LUA_INIT")
-- (find-lua51manual "#6" "LUA_INIT" "@filename")
-- (find-es "lua5" "LUA_INIT")
-- (find-es "lua5" "lua-init-from-emacs")
--
-- This is _also_ the module "edrxlib.lua" in dednat6, blogme3, and emlua!
-- I use these sexps to keep them in sync:
-- (find-tkdiff "~/LUA/lua50init.lua" "~/LATEX/dednat6/edrxlib.lua")
-- (find-tkdiff "~/LUA/lua50init.lua" "~/dednat6/dednat6/edrxlib.lua")
-- (find-sh0 "cp -v ~/LUA/lua50init.lua ~/LUA/edrxlib.lua")
-- (find-sh0 "cp -v ~/LUA/lua50init.lua ~/LATEX/dednat6/edrxlib.lua")
-- (find-sh0 "cp -v ~/LUA/lua50init.lua ~/LATEX/dednat7/edrxlib.lua")
-- (find-sh0 "cp -v ~/LUA/lua50init.lua ~/dednat6/dednat6/edrxlib.lua")
-- (find-sh0 "cp -v ~/LUA/lua50init.lua ~/blogme3/edrxlib.lua")
-- (find-sh0 "cp -v ~/LUA/lua50init.lua ~/emlua/edrxlib.lua")
-- Old way (fragile): (find-es "emacs" "hard-links")
--
-- Author: Eduardo Ochs <eduardoochs@gmail.com>
-- Version: 2024jan24 <- don't trust this date
-- Public domain.
--
-- Note: "dednat4.lua" and "dednat6.lua" try to load this at startup,
-- with 'require "edrxlib"', just after setting the path; if this has
-- already been loaded by LUA_INIT, then the 'require "edrxlib"' will
-- be a no-op, because of this trick:
-- (to "package.require")
-- (to "edrxlib")
-- otherwise it is loaded, usually from "~/dednat4/" or
-- "~/LATEX/dednat6/". See also:
-- (find-dn4 "dednat4.lua" "edrxlib")
-- (find-dn6 "dednat6.lua" "requires")
-- (find-blogme3 "blogme3.lua" "edrxlib")
--
-- This init file used to work both on lua-5.0 and lua-5.1...
-- I have stopped using lua-5.0, but I kept the name of this file.
-- This file works on Lua 5.1, 5.2, 5.3, and 5.4.
--
-- This file still has _A LOT_ of cruft!
-- «.compat» (to "compat")
-- «.pack-and-unpack» (to "pack-and-unpack")
-- «.printf» (to "printf")
-- «.loadstring» (to "loadstring")
-- «.table.empty» (to "table.empty")
-- «.ee_expand» (to "ee_expand")
-- «.ee_dofile» (to "ee_dofile")
-- «.readfile» (to "readfile")
-- «.writefile» (to "writefile")
-- «.fileexists» (to "fileexists")
-- «.trim» (to "trim")
-- «.split» (to "split")
-- «.splitlines» (to "splitlines")
-- «.splitlines-5.3» (to "splitlines-5.3")
-- «.getoutput» (to "getoutput")
-- «.map» (to "map")
-- «.sorted» (to "sorted")
-- «.fold» (to "fold")
-- «.min-and-max» (to "min-and-max")
-- «.table.reverse» (to "table.reverse")
-- «.table.addentries» (to "table.addentries")
-- «.package.require» (to "package.require")
-- «.edrxlib» (to "edrxlib")
-- «.cow-and-coy» (to "cow-and-coy")
-- «.eval-and-L» (to "eval-and-L")
-- «.eoo» (to "eoo")
-- «.Class» (to "Class")
-- «.over0» (to "over0")
-- «.over» (to "over")
-- «.methodsover» (to "methodsover")
-- «.rawtostring» (to "rawtostring")
-- «.rawtostring_comp» (to "rawtostring_comp")
-- «.Code» (to "Code")
-- «.Tos» (to "Tos")
-- «.mytostring» (to "mytostring")
-- «.mytostringm» (to "mytostringm")
-- «.PP» (to "PP")
-- «.VerticalTable» (to "VerticalTable")
-- «.HTable-and-VTable» (to "HTable-and-VTable")
-- «.VList» (to "VList")
-- «.Set» (to "Set")
-- «.SetL» (to "SetL")
-- «.Path» (to "Path")
-- «.DednatRequire» (to "DednatRequire")
-- «.PrintFunction» (to "PrintFunction")
--
-- Deleted:
-- «.DGetInfo-TODO» (to "DGetInfo-TODO")
-- «.DGetInfo» (to "DGetInfo")
-- «.DGetInfos» (to "DGetInfos")
-- Replaced by:
-- «.DGetPairs» (to "DGetPairs")
-- «.DGetFrame» (to "DGetFrame")
-- «.PreTraceback» (to "PreTraceback")
--
-- «.Rect» (to "Rect")
-- «.SynTree» (to "SynTree")
-- «.DedTree» (to "DedTree")
-- «.syntree» (to "syntree")
-- «.re_expand_INFIX» (to "re_expand_INFIX")
-- «.math-grammar» (to "math-grammar")
-- «.Re» (to "Re")
--
-- «.strlen8» (to "strlen8")
-- «.untabify» (to "untabify")
-- «.untabify8» (to "untabify8")
-- «.utf8tohtml» (to "utf8tohtml")
-- «.u8c_to_l1» (to "u8c_to_l1")
-- «.u8_to_l1» (to "u8_to_l1")
-- «.toslashhex» (to "toslashhex")
-- «.divmod» (to "divmod")
-- «.userocks» (to "userocks")
-- «.loadblogme3» (to "loadblogme3")
-- «.savevars» (to "savevars")
-- «.variants-of-format» (to "variants-of-format")
-- «.minus-0» (to "minus-0")
-- «.trailing-zeroes» (to "trailing-zeroes")
-- «.pformat» (to "pformat")
-- «.dformat» (to "dformat")
-- «.gformat» (to "gformat")
--
-- «.loaddednat6» (to "loaddednat6")
-- «.loadelpeg1» (to "loadelpeg1")
-- «.loaddednatrequire» (to "loaddednatrequire")
-- «.loadshow2» (to "loadshow2")
-- «.loadtikz2» (to "loadtikz2")
-- «.loadluarocks» (to "loadluarocks")
-- «.loadfbcache2» (to "loadfbcache2")
-- «.capitalize» (to "capitalize")
-- «.getinscritos» (to "getinscritos")
--
-- «.string-methods» (to "string-methods")
-- «.otherfunctions» (to "otherfunctions")
-- «.0-based» (to "0-based")
-- «.P-old» (to "P-old")
-- «.P-old-tests» (to "P-old-tests")
-- «.PP-old» (to "PP-old")
-- «.PPP-old» (to "PPP-old")
-- «.follow» (to "follow")
-- «.NamedFunction» (to "NamedFunction")
-- «.envsubst» (to "envsubst")
-- «.mytostring-old» (to "mytostring-old")
-- «.ee_loadlib» (to "ee_loadlib")
-- «.ee_ls» (to "ee_ls")
-- «.load_dednat4» (to "load_dednat4")
-- «.load_posix» (to "load_posix")
-- «.load_PP» (to "load_PP")
-- «.PPeval» (to "PPeval")
-- «.loadlpeg» (to "loadlpeg")
-- «.loadlpegrex» (to "loadlpegrex")
-- «.loadpegdebug» (to "loadpegdebug")
-- «.loadbitlib» (to "loadbitlib")
-- «.autoload» (to "autoload")
-- «.loadtcl» (to "loadtcl")
-- «.loadldb» (to "loadldb")
-- «.loadpeek» (to "loadpeek")
-- «.loadalarm» (to "loadalarm")
-- «.loadposix» (to "loadposix")
-- «.curl» (to "curl")
-- «.preparef2n» (to "preparef2n")
-- «.each2» (to "each2")
-- «.translatechars» (to "translatechars")
-- «.lpeg» (to "lpeg")
-- «.sbeconcat» (to "sbeconcat")
-- «.concatbestrings» (to "concatbestrings")
-- «.lpeg_togsub» (to "lpeg_togsub")
-- «.lpeg_gsub» (to "lpeg_gsub")
-- «.lpeg_gsub_» (to "lpeg_gsub_")
-- «.lpeg_balanced» (to "lpeg_balanced")
-- «.ee_into» (to "ee_into")
-- «.chdir» (to "chdir")
-- «.hms_to_s» (to "hms_to_s")
-- «.s_to_hms» (to "s_to_hms")
-- «.icollect» (to "icollect")
-- «.Repl1.lua» (to "Repl1.lua")
-- «.Repl2.lua» (to "Repl2.lua")
-- «.Repl3.lua» (to "Repl3.lua")
--
-- «.mytraceback» (to "mytraceback")
-- «.errorfb_line» (to "errorfb_line")
-- «.ee_template» (to "ee_template")
-- «.interactor» (to "interactor")
-- «.MyXpcall» (to "MyXpcall")
-- «.Repl» (to "Repl")
-- «.loadluarepl» (to "loadluarepl")
-- «.replaceranges» (to "replaceranges")
-- «.string.replace» (to "string.replace")
-- «.anggurl-and-angg_url» (to "anggurl-and-angg_url")
--
-- Moved to:
-- (find-blogme3 "cruft-jan2024.lua")
-- «.EevIntro» (to "EevIntro")
-- «.youtube_make_url» (to "youtube_make_url")
-- «.youtube_split» (to "youtube_split")
-- «.getsexp» (to "getsexp")
-- «.ELispHF» (to "ELispHF")
-- «.SexpSkel» (to "SexpSkel")
-- «.ELispH» (to "ELispH")
-- «.Sexp» (to "Sexp")
-- «.to_youtube_hash» (to "to_youtube_hash")
-- «.url_split» (to "url_split")
-- «.Blogme» (to "Blogme")
-- «.code_video» (to "code_video")
-- «.ELispInfo» (to "ELispInfo")
-- «.getsexpskel» (to "getsexpskel")
-- «.SexpLine» (to "SexpLine")
--
-- «.fsize» (to "fsize")
--
-- «.findxxxpdf_parse» (to "findxxxpdf_parse")
--
-- «.repltexthis» (to "repltexthis")
-- «.load_sqlite» (to "load_sqlite")
-- «.Path.addLUAtopath» (to "Path.addLUAtopath")
-- «compat» (to ".compat")
-- On Lua 4.x these functions had the short names on the left;
-- on Lua-5.0.x a file etc/compat.lua could be used to make the short
-- names work, but on Lua-5.1.x this compat.lua has been dropped...
-- I still like the short names, so:
write = io.write -- (find-lua51manual "#pdf-io.write")
format = string.format -- (find-lua51manual "#pdf-string.format")
gsub = string.gsub -- (find-lua51manual "#pdf-string.gsub")
strfind = string.find -- (find-lua51manual "#pdf-string.find")
strlen = string.len -- (find-lua51manual "#pdf-string.len")
strsub = string.sub -- (find-lua51manual "#pdf-string.sub")
concat = table.concat -- (find-lua51manual "#pdf-table.concat")
tinsert = table.insert -- (find-lua51manual "#pdf-table.insert")
tremove = table.remove -- (find-lua51manual "#pdf-table.remove")
-- foreachi = table.foreachi -- (find-lua51manual "#7.2" "table.foreachi")
-- getn = table.getn -- (find-lua51manual "#7.2" "table.getn")
table.getn = function (tbl) return tbl.n or #tbl end
getn = function (tbl) return tbl.n or #tbl end
-- «pack-and-unpack» (to ".pack-and-unpack")
-- (find-es "lua5" "pack-and-unpack")
-- pack = table.pack or function (...) return arg end -- 5.1 and 5.2
pack = table.pack or function (...) return {n=select("#", ...), ...} end
unpack = unpack or table.unpack
myunpack = function (arg) return unpack(arg, 1, arg.n) end
-- Examples:
-- PP(pack(nil, 22, nil, 44, nil)) --> {2=22, 4=44, "n"=5}
-- PP(unpack({nil, 22, nil, 44, nil, n=5})) --> <nil> 22
-- PP(myunpack({nil, 22, nil, 44, nil, n=5})) --> <nil> 22 <nil> 44 <nil>
-- «printf» (to ".printf")
printf = function (...) write(format(...)) end
-- «loadstring» (to ".loadstring")
-- (find-es "lua5" "loadstring")
loadstring = loadstring or load
-- «table.empty» (to ".table.empty")
table.empty = function (T) return next(T) == nil end
-- «ee_expand» (to ".ee_expand")
-- (find-eev "eev.el" "ee-expand")
ee_expand = function (path)
path = string.gsub(path, "^~$", "$HOME/", 1)
path = string.gsub(path, "^~/", "$HOME/", 1)
path = string.gsub(path, "^%$(%w+)", os.getenv, 1)
return path
end
-- «ee_dofile» (to ".ee_dofile")
-- For example,
-- ee_dofile("~/LUA/tikz1.lua")
-- works as expected; with the standard dofile we would need this:
-- dofile(os.getenv("HOME").."/LUA/tikz1.lua")
ee_dofile = function (path) return dofile(ee_expand(path)) end
-- «readfile» (to ".readfile")
-- «writefile» (to ".writefile")
-- (find-es "lua5" "readfile")
-- (find-lua51manual "#pdf-io.open")
-- (find-lua51manual "#pdf-file:read")
-- (find-lua51manual "#pdf-file:write")
readfile = function (fname)
local f = assert(io.open(fname, "r"))
local bigstr = f:read("*a")
f:close()
return bigstr
end
writefile = function (fname, bigstr)
local f = assert(io.open(fname, "w+"))
f:write(bigstr)
f:close()
end
-- «fileexists» (to ".fileexists")
fileexists = function (fname)
local f, err = (io.open(fname, "r"))
if f then io.close(f); return true end
return false
end
-- (find-blogme3file "youtube.lua" "ee_readfile =")
ee_readfile = function (fname) return readfile(ee_expand(fname)) end
ee_writefile = function (fname, str) return writefile(ee_expand(fname), str) end
filecontents0 = function (fname)
local ok,contents = pcall(function () return ee_readfile(fname) end)
if ok then return contents end
end
-- (find-dn4 "dednat4.lua" "dednat4dir")
-- (find-dn6 "dednat6.lua" "package.path")
fnamedirectory = function (fname) return fname:match"^(.*/)[^/]*$" end
fnamenondirectory = function (fname) return fname:match "([^/]*)$" end
fnamesansextension = function (fname)
return fname:reverse():gsub("^[^/]*%.", ""):reverse()
end
fnamebase = function (fname)
return fnamenondirectory(fnamesansextension(fname))
end
ee_shorten = function (fname)
fname = fname:gsub("^/home/edrx/", "~/")
fname = fname:gsub("^~/snarf/", "$S/")
return fname
end
-- «trim» (to ".trim")
-- (to "string-methods")
-- (find-lua51manual "#5.4.1" "Patterns")
ltrim = function (str) return str:match"^%s*(.*)$" end
rtrim = function (str) return str:reverse():ltrim():reverse() end
bitrim = function (str) return str:ltrim():rtrim() end
string.ltrim = ltrim
string.rtrim = rtrim
string.bitrim = bitrim
-- «split» (to ".split")
-- (find-es "lua5" "split")
split = function (str, pat)
local arr = {}
string.gsub(str, pat or "([^%s]+)", function (word)
table.insert(arr, word)
end)
return arr
end
-- «splitlines» (to ".splitlines")
splitlines = function (bigstr)
local arr = split(bigstr, "([^\n]*)\n?")
table.remove(arr)
return arr
end
isplitlines = function (bigstr)
return ipairs(splitlines(bigstr))
end
-- «splitlines-5.3» (to ".splitlines-5.3")
-- (find-es "lua5" "splitlines-5.3")
splitlines = function (bigstr)
local arr = split(bigstr, "([^\n]*)\n?")
if _VERSION:sub(5) < "5.3" then
table.remove(arr)
end
return arr
end
-- «getoutput» (to ".getoutput")
-- (find-es "lua5" "getoutput")
getoutput = function (command)
local pipe = assert(io.popen(command))
local output = pipe:read("*a")
pipe:close()
return output
end
-- «map» (to ".map")
--------[ keys, map, seq, nop, each2, splitlines, chartranslator ]--------
keys = function (tbl)
local ks = {}
for k,_ in pairs(tbl) do table.insert(ks,k) end
return ks
end
map = function (f, arr, n)
local brr = {}
for i=1,(n or #arr) do table.insert(brr, (f(arr[i]))) end
return brr
end
seq = function (a, b, c)
local arr = {}
for i=a,b,(c or 1) do table.insert(arr, i) end
return arr
end
seqn = function (a, b, n)
local f = function (k) return a + (b-a)*(k/n) end
return map(f, seq(0, n))
end
nop = function () end
id = function (...) return ... end
copy = function (A)
local B = {}
for k,v in pairs(A) do B[k] = v end
setmetatable(B, getmetatable(A))
return B
end
shallowcopy = function (A, B)
B = B or {}
for k,v in pairs(A) do B[k] = v end
setmetatable(B, getmetatable(A))
return B
end
deepcopy = function (A)
if type(A) ~= "table" then return A end
local B = {}
for k,v in pairs(A) do B[k] = deepcopy(v) end
setmetatable(B, getmetatable(A))
return B
end
deepcopymt = function (A, mt)
if type(A) ~= "table" then return A end
local B = {}
for k,v in pairs(A) do B[k] = deepcopymt(v, mt) end
setmetatable(B, mt) -- use mt
return B
end
uniq = function (A)
local B = {}
for i=1,#A do if A[i] ~= A[i-1] then table.insert(B, A[i]) end end
return B
end
-- (find-efunctiondescr 'mapconcat)
-- (find-elnode "Index" "* mapconcat:")
-- (find-es "lua5" "table.concat")
mapconcat = function (f, tbl, sep, n)
return table.concat(map(f, tbl, n), sep)
end
maplines = function (f, bigstr)
return mapconcat(f, splitlines(bigstr), "\n")
end
transpose = function (A)
local TA = {}
for k,v in pairs(A) do TA[v] = k end
return TA
end
-- «sorted» (to ".sorted")
-- (find-es "lua5" "sorted")
-- (find-lua51manual "#pdf-table.sort")
-- http://lua-users.org/lists/lua-l/2011-04/msg00406.html
sorted = function (tbl, lt) table.sort(tbl, lt); return tbl end
-- «fold» (to ".fold")
-- (find-es "lua5" "fold")
-- (find-es "haskell" "foldr")
-- (find-hugsbasefile "Prelude.hs" "\nfoldl ")
-- foldl :: (a -> b -> a) -> a -> [b] -> a
foldl = function (f, a, B, i, j)
for k=(i or 1),(j or #B) do a = f(a, B[k]) end
return a
end
foldl1 = function (f, A)
local o = A[1]
for i=2,#A do o = f(o, A[i]) end
return o
end
foldr1 = function (f, A)
local o = A[#A]
for i=#A-1,1,-1 do o = f(A[i], o) end
return o
end
-- «min-and-max» (to ".min-and-max")
-- (find-lua51manual "#pdf-math.min")
-- (find-lua51manual "#pdf-math.max")
-- PP(math.min("22", "200")) --> 22
-- PP(min("22", "200")) --> "200"
min = function (a, b)
if a < b then return a else return b end
end
max = function (a, b)
if a < b then return b else return a end
end
Min = function (a, b) return (a and b and min(a, b)) or a or b end
Max = function (a, b) return (a and b and max(a, b)) or a or b end
minmax = function (a, b, c) return Min(a, b), Max(b, c) end
-- «table.reverse» (to ".table.reverse")
-- «table.addentries» (to ".table.addentries")
table.reverse = function (A)
local B = {}
setmetatable(B, getmetatable(A))
for i=1,#A do B[#A-i+1] = A[i] end
return B
end
table.addentries = function (A, B)
for k,v in pairs(B) do A[k] = v end
return A
end
-- «package.require» (to ".package.require")
-- «edrxlib» (to ".edrxlib")
-- Make package.require consider that this file has been loaded when
-- it was loaded by LUA_INIT=@.../LUA/lua50init.lua (see the comments
-- at the top of this file) so that we can do 'require "lua50init"' or
-- 'require "edrxlib"'...
-- (find-lua51manual "#pdf-require")
-- (find-lua51file "")
-- (find-lua51file "src/loadlib.c" "static int ll_require ")
package.loaded.lua50init =
package.loaded.lua50init or "(loaded by LUA_INIT=@...)"
package.loaded.edrxlib =
package.loaded.edrxlib or "(loaded by LUA_INIT=@...)"
-- «cow-and-coy» (to ".cow-and-coy")
-- (find-es "lua5" "cow-and-coy")
coy = coroutine.yield
cow = coroutine.wrap
-- «eval-and-L» (to ".eval-and-L")
-- (find-es "lua5" "lambda-with-L")
-- (find-es "lua5" "lambda-with-Code")
-- (find-LATEX "2014-1-GA-P2-gab.lua")
eval = function (str) return assert(loadstring(str))() end
expr = function (str) return eval("return "..str) end
L00 = function (args, body)
return string.format("function (%s) return %s end", args, body)
end
L0 = function (str)
str = str:gsub("^%s*(%S+)%s+->", "%1 ")
local args, body = str:match("^%s*(%S+)%s+(.*)$")
return L00(args, body)
end
L = function (str) return expr(L0(str)) end
--
-- An alternative definition - better, but uses a class:
-- L = Code.L
-- See: (to "Code")
-- «eoo» (to ".eoo")
-- «Class» (to ".Class")
-- For a documented version, see:
-- (find-angg "LUA/eoo.lua")
--
Class = {
type = "Class",
__call = function (class, o) return setmetatable(o, class) end,
}
setmetatable(Class, Class)
otype_metatables = {}
otype = function (o) -- works like type, except on my "objects"
local mt = getmetatable(o)
return mt and (otype_metatables[mt] or mt.type) or type(o)
end
-- «over0» (to ".over0")
-- Example:
-- A = {a=22}
-- B = over(A, {b=33})
-- PP(B, A, B.b, B.a)
-- --> {"b"=33} {"a"=22} 33 22
--[[
over = function (bottomtable, toptable)
return setmetatable(toptable or {}, {__index = bottomtable})
end
--]]
-- «over» (to ".over")
-- (find-es "lua5" "over")
-- over(B)(A) creates this: A --> mt --> B
over = function (B)
return function (A)
return setmetatable(A, {__index=B})
end
end
Over = function (class)
return over(class.__index)
end
-- «methodsover» (to ".methodsover")
-- (find-es "lua5" "methodsover")
methodsover = function (class1index)
return function (class2index)
local class2indexmetatable = { __index = class1index }
setmetatable(class2index, class2indexmetatable)
return class2index
end
end
-- «rawtostring» (to ".rawtostring")
-- (find-es "lua5" "rawtostring")
rawtostring = function (o)
if type(o) == "table" then
local mt = getmetatable(o); setmetatable(o, nil)
local rawtos = tostring(o); setmetatable(o, mt)
return rawtos
end
return tostring(o)
end
-- «rawtostring_comp» (to ".rawtostring_comp")
-- Based on: (to "Tos" "comparekvs =")
rawtostring_comp = function (o1, o2)
local t1, t2 = type(o1), type(o2)
if t1 == t2 then
if t1 == "number" then return o1 < o2 end
if t1 == "string" then return o1 < o2 end
return rawtostring(o1) < rawtostring(o2) -- fast
else
return t1 < t2 -- numbers before strings before tables, etc
end
end
sortedkeys = function (A)
return sorted(keys(A), rawtostring_comp)
end
-- «Code» (to ".Code")
-- The class Code "converts strings to executable code" in nice ways.
-- Commented version: (find-angg "LUA/Code2.lua")
-- See: (to "eval-and-L")
--
Code = Class {
type = "Code",
from = function (src) return Code{src=src}:parse() end,
expr = function (src) return Code{src=src}:mkbody("_expr") end,
eval = function (src) return Code{src=src}:mkbody("_eval") end,
ve = function (src) return Code.from(src):mkbody("_ve") end,
vc = function (src) return Code.from(src):mkbody("_vc") end,
L = function (src) return Code.ve(src):f() end,
__tostring = function (c) return c:tostring() end,
__call = function (c,...) return c:f()(...) end,
__index = {
tostring = function (c)
local f = function (k) return format("%8s: %s", k, c[k]) end
return mapconcat(f, sortedkeys(c), "\n")
end,
--
srcpat = "^%s*([%w_,]+)%s*[%-=]>%s*(.*)$",
parse = function (c)
local srcvars,srcbody = c.src:match(c.srcpat)
if not srcvars then error("Code.parse can't parse: "..c.src) end
c.srcvars,c.srcbody = srcvars,srcbody
return c
end,
--
_ve = "local <srcvars> = ...; return <srcbody>",
_vc = "local <srcvars> = ...; <srcbody>",
_expr = "return <src>",
_eval = "<src>",
mkbody = function (c,k) return c:mkbody0(c[k]) end,
mkbody0 = function (c,fmt)
local f = function (s) return c[s] end
c.body = fmt:gsub("<(.-)>", f)
return c
end,
f = function (c) return assert(loadstring(c.body)) end,
},
}
-- «Tos» (to ".Tos")
-- Commented version:
-- (find-angg "LUA/Tos.lua")
--
Tos = Class {
type = "Tos",
__index = {
--
-- Basic methods:
-- o: object (of any type) to string
-- ov: like o, but vertical in a simplistic way
-- t: table to string
-- t0: table to string, low level
-- kvs: listofkeyvaluepairs to string
-- kv: keyvaluepair to string
-- k: key to string
--
o = function (tos, o, a,sep,b,emp)
local ty = type(o)
if ty=="number" then return tostring(o) end
if ty=="string" then return format("%q", o) end
if ty=="table" then return tos:t(o, a,sep,b,emp) end
return "<"..tostring(o)..">"
end,
ov = function (tos, o, a,sep,b,emp)
return tos:o(o, "{ ", ",\n ", "\n}", "{}")
end,
t = function (tos, T, a,sep,b,emp)
return tos:t0(T, a,sep,b,emp)
end,
t0 = function (tos, T, a,sep,b,emp)
local tableisempty = (next(T) == nil)
if tableisempty and emp then return emp end
local body = tos:kvs(tos:getsortedkvs(T), sep)
return (a or "{")..body..(b or "}")
end,
--
kvs = function (tos, ps, sep)
local tos_p = function (p) return tos:kv(p) end
return mapconcat(tos_p, ps, sep or ", ")
end,
kv = function (tos, p) return tos:k(p.key).."="..tos:o(p.val) end,
k = function (tos, k) return tos:o(k) end,
--
-- t0 uses this to sort the key-value pairs of a table.
getsortedkvs = function (tos, T)
return sorted(tos:getkvs(T), tos.comparekvs)
end,
getkvs = function (tos, T)
local kvs = {}
for k,v in pairs(T) do table.insert(kvs, {key=k, val=v}) end
return kvs
end,
comparekvs = function (kv1, kv2) -- not a method!
local k1, k2 = kv1.key, kv2.key
return rawtostring_comp(k1, k2)
end,
--
-- return a tostring-like function
f = function (tos, a,sep,b,emp)
return function (o) return tos:o(o, a,sep,b,emp) end
end,
--
-- An alternative to t. See the object "tosp" below.
tp = function (tos, T, a,sep,b,emp) -- experimental
local mt = getmetatable(T)
local typename = mt and mt.type
local prefix = typename and (typename..":") or ""
return prefix..tos:t0(T, a,sep,b,emp)
end,
},
}
-- Two global objects of the class Tos.
-- To change how mytostring and PP work, replace them.
tos0 = Tos({})
tosp = Tos({t = Tos.__index.tp})
-- «mytostring» (to ".mytostring")
-- Basic tostring-ish functions.
-- To override them, redefine these functions.
mytostring = function (o) return tos0:o(o) end
mytostringv = function (o) return tos0:ov(o) end
mytabletostring = function (o) return tos0:ov(o) end -- old name
--
mytostringp = function (o) return tosp:o(o) end
mytostringvp = function (o) return tosp:ov(o) end
mytostringpv = function (o) return tosp:ov(o) end
-- «mytostringm» (to ".mytostringm")
mytostringm = function (o)
local mt = getmetatable(o)
if mt and mt.__tostring then return tostring(o) end
return mytostring(o)
end
-- «PP» (to ".PP")
-- Basic pretty-printing functions.
-- PPV = function (o) print(mytabletostring(o)); return o end
PPPV = function (o) print(mytostringpv(o)); return o end
PPP = function (o) print(mytostringp (o)); return o end
PPV = function (o) print(mytostringv (o)); return o end
PP = function (...) return PP_(mytostring, ...) end
PP_ = function (tos, ...)
local args = pack(...)
for i=1,args.n do printf(" %s", tos(args[i])) end
print()
return ...
end
-- «VerticalTable» (to ".VerticalTable")
-- Tests: (find-es "lua5" "VerticalTable")
-- Note: this is an obsolete name, use VTable instead
VerticalTable = Class {
type = "VerticalTable",
__tostring = function (vt) return mytabletostring(vt) end,
__index = {
},
}
-- «HTable-and-VTable» (to ".HTable-and-VTable")
-- (find-es "lua5" "Tos-2021")
-- tos_HTable = Tos({}):f()
-- tos_VTable = Tos({}):f("{ ", ",\n ", "\n}", "{}")
HTable = Class {
type = "HTable",
__tostring = mytostring,
__index = {
},
}
HTableP = Class {
type = "HTableP",
__tostring = mytostringp,
__index = {
},
}
VTable = Class {
type = "VTable",
__tostring = mytostringv,
__index = {
},
}
VTableP = Class {
type = "VTableP",
__tostring = mytostringvp,
__index = {
},
}
-- «VList» (to ".VList")
-- Commented version: (find-angg "LUA/LsQuadros1.lua" "VList")
VList = Class {
type = "VList",
__tostring = function (vl) return vl:tostring() end,
__index = {
tostring0 = function (vl) return mapconcat(mytostringm, vl, ',\n ') end,
tostring = function (vl) return "VList{\n "..vl:tostring0().."\n}" end,
},
}
-- «Set» (to ".Set")
-- Commented version:
-- (find-angg "LUA/Set.lua" "Set")
--
Set = Class {
type = "Set",
new = function () return Set {_={}} end,
from = function (L) return Set.fromarray(L) end,
fromarray = function (L)
local C = Set.new()
for i,v in ipairs(L) do C._[v]=v end
return C
end,
__add = function (A, B) -- union
local C = Set.new()
for k,v in pairs(A._) do C._[k]=v end
for k,v in pairs(B._) do C._[k]=v end
return C
end,
__sub = function (A, B) -- difference
local C = Set.new()
for k,v in pairs(A._) do C._[k]=v end
for k,v in pairs(B._) do C._[k]=nil end
return C
end,
__mul = function (A, B) -- intersection
local C = Set.new()
for k,v in pairs(A._) do if B._[k] then C._[k]=v end end
return C
end,
__len = function (A) print"!" return #(keys(A._)) end, -- number of elements
__tostring = function (A)
return "(Set with "..A:n().." elements)"
end,
--
-- Methods
__index = {
get = function (A, k) return A._[k] end,
has = function (A, k) return A._[k] end,
n = function (A) return #keys(A._) end,
k = function (A) return keys(A._) end,
ks = function (A) return sorted(keys(A._)) end,
ksc = function (A, sep) return table.concat(A:ks(), sep or "\n") end,
gen = function (A)
return cow(function ()
for i,v in ipairs(A:ks()) do coy(v, A:get(v)) end
end)
end,
add = function (A, key, val)
A._[key] = val or key
return A
end,
del = function (A, key)
A._[key] = nil
return A
end,
},
}
-- «SetL» (to ".SetL")
-- Commented version:
-- (find-angg "LUA/SetL.lua")
-- (find-angg "LUA/SetL.lua" "SetL")
--
SetL = Class {
type = "SetL",
new = function () return SetL {keys={}, list={}} end,
from = function (L) return Set.fromarray(L) end,
fromarray = function (L)
local C = Set.new()
for i,k in ipairs(L) do C:add(k) end
return C
end,
__len = function (setl) return setl:n() end,
__tostring = function (setl)
return format("(SetL with %d elements)", setl:n())
end,
__add = function (A, B) -- union
local C = SetL:new()
for k,v in A:gen() do C:add(k, v) end
for k,v in B:gen() do C:add(k, v) end
return C
end,
__mul = function (A, B) -- intersection
local C = SetL:new()
for k,v in A:gen() do if B:has(k) then C:add(k, v) end end
return C
end,
__sub = function (A, B) -- difference
local C = SetL.new()
for k,v in A:gen() do if not B:has(k) then C:add(k, v) end end
return C
end,
--
-- Methods
__index = {
get = function (setl, key) return setl.keys[key] end,
val = function (setl, key) return setl.keys[key] end,
has = function (setl, key) return setl.keys[key] end,
n = function (setl) return #setl.list end,
k = function (setl) return setl.list end,
ks = function (setl) return sorted(keys(setl.keys)) end,
ksc = function (setl, sep) return table.concat(setl:ks(), sep or "\n") end,
gen = function (setl) return cow(function ()
for i,k in ipairs(setl.list) do coy(k, setl:val(k)) end
end) end,
add = function (setl, key, val)
if not setl:has(key) then
setl.keys[key] = val or key
table.insert(setl.list, key)
end
return setl
end,
},
}
-- «Path» (to ".Path")
-- Commented version: (find-angg "LUA/Path.lua")
-- Typical usage: Path.prepend("path", "~/LUA/?.lua")
-- or: Path.prependtopath "~/LUA/?.lua"
--
Path = Class {
type = "Path",
from = function (field) return Path {field = field} end,
prepend = function (field, fname) return Path.from(field):prepend(fname) end,
prependtopath = function (fname) return Path.prepend("path", fname) end,
prependtocpath = function (fname) return Path.prepend("cpath", fname) end,
addLUAtopath = function () return Path.prepend("path", "~/LUA/?.lua") end,
find = function (field, modulename)
local modulepath = modulename:gsub("%.", "/")
for pathentry in package[field]:gmatch("([^;]+)") do
local filename = pathentry:gsub("%?", modulepath)
local file = io.open(filename, "rb")
if file then
file:close()
return filename
end
end
end,
__tostring = function (p) return p:tostring() end,
__index = {
get = function (p) return package[p.field] end,
set = function (p, newvalue) package[p.field] = newvalue end,
tostring = function (p, sep)
return format("package.%s = %s", p.field, p:tostring0(sep))
end,
tostring0 = function (p, sep)
return (p:get():gsub(";", sep or "\n ;"))
end,
toset = function (p)
return Set.from(split(p:get(), "([^;]+)"))
end,
has = function (p, fname)
return p:toset():has(fname)
end,
prepend0 = function (p, fname)
p:set(ee_expand(fname)..";"..p:get())
end,
prepend = function (p, fname)
if not p:has(ee_expand(fname)) then
p:prepend0(fname)
end
return p
end
},
}
-- «DednatRequire» (to ".DednatRequire")
-- Commented version: (find-angg "LUA/DednatRequire1.lua")
-- Used by: (to "loaddednatrequire")
-- Usage: require = DednatRequire.newrequire
-- or: require = DednatRequire_oldrequire
--
DednatRequire = {
alreadyloaded = function (modulename)
if package.loaded[modulename] then
return package.loaded[modulename]
end
end,
findandload = function (modulename)
local filename = DednatRequire.find(modulename)
if not filename then return nil end
return DednatRequire.loadfile(modulename, filename)
end,
find = function (modulename)
local modulepath = string.gsub(modulename, "%.", "/")
for path in string.gmatch(package.path, "([^;]+)") do
local filename = string.gsub(path, "%?", modulepath)
local file = io.open(filename, "rb")
if file then
file:close()
return filename
end
end
end,
loadfile = function (modulename, filename)
printf("%% DednatRequire.loadfile(%q, %q)\n", modulename, filename)
local runcode = assert(loadfile(filename)) -- the file must exist
local retval = runcode() -- and this must succeed
package.loaded[modulename] = retval or _G -- mark as loaded
return package.loaded[modulename]
end,
oldrequire = function (modulename)
printf("%% DednatRequire.oldrequire(%q)\n", modulename)
DednatRequire_oldrequire(modulename)
end,
--
newrequire = function (modulename)
return DednatRequire.alreadyloaded(modulename) -- try the method 0
or DednatRequire.findandload(modulename) -- try the method 1
or DednatRequire_oldrequire(modulename) -- try the oldrequire
end,
}
DednatRequire_oldrequire = DednatRequire_oldrequire or require -- backup
-- «PrintFunction» (to ".PrintFunction")
-- Commented version: (find-angg "LUA/PrintFunction1.lua")
--
PrintFunction = Class {
type = "PrintFunction",
from = function (f) return PrintFunction(debug.getinfo(f, "nSluf")) end,
fromts = function (o) return PrintFunction.from(getmetatable(o).__tostring) end,
tostring = function (f) return tostring(PrintFunction.from(f)) end,
__tostring = function (pf) return pf:tostring() end,
__index = {
v = function (pf) return VTable(copy(pf)) end,
tostring = function (pf) return pf:_any() end,
_shortsrc0 = function (pf) return ee_shorten(pf.short_src) end,
_shortsrc0 = function (pf) return ee_shorten(pf.source:sub(2)) end,
_shortsrc = function (pf) return pf.short_src and pf:_shortsrc0() end,
_name0 = function (pf) return pf.name and format("%q", pf.name) end,
_name = function (pf) return pf:_name0() or "(unknown name)" end,
_linedef = function (pf) return pf.linedefined end,
_linelast = function (pf) return pf.lastlinedefined end,
_linecurr0 = function (pf) return pf.currentline end,
_linecurr = function (pf) return pf:_linecurr0()~=-1 and pf:_linecurr0() end,
_line1 = function (pf) return pf:_linedef() end,
_line2 = function (pf) return pf:_linecurr() or pf:_linelast() end,
_tailcall0 = function (pf) return "[Lua] tail call" end,
_main0 = function (pf) return "[Lua] "..pf:_shortsrc()
.." line "..pf:_linecurr() end,
_C0 = function (pf) return "[ C ] "..pf.namewhat
.." C function "..pf:_name() end,
_tbbody0 = function (pf) return (pf:_shortsrc() or "")
.." "..(pf:_line1() or "")
.." "..(pf:_line2() or "")
.." "..(pf.namewhat or "")
.." "..(pf.name or "") end,
_tbbody = function (pf) return rtrim(pf:_tbbody0()) end,
_findluatb = function (pf) return format('(find-luatb \"%s\")', pf:_tbbody()) end,
_any = function (pf)
if pf.short_src == "[C]" then return pf:_C0() end
if pf.what == "main" then return pf:_main0() end
if pf.short_src == "(tail call)" then return pf:_tailcall0() end
return pf:_findluatb()
end,
},
}
-- «DGetInfo-TODO» (to ".DGetInfo-TODO")
-- NOTE: the classes DGetInfo and DGetInfos were superseded by the
-- classes DGetPairs, DGetFrame and PreTraceback, defined below.
--
-- «DGetInfo» (to ".DGetInfo")
-- Commented version: (find-angg "LUA/DGetInfo1.lua")
--
-- «DGetInfos» (to ".DGetInfos")
-- Commented version:
-- (find-angg "LUA/DGetInfo1.lua" "DGetInfos")
-- (find-angg "LUA/DGetInfo1.lua" "DGetInfos-tests")
-- «DGetPairs» (to ".DGetPairs")
-- See: (to "DGetFrame")
-- Commented version:
-- (find-angg "LUA/PreTraceback1.lua" "DGetPairs")
--
DGetPairs = Class {
type = "DGetPairs",
new = function (storevalues)
return DGetPairs {names={}, values=(storevalues and {})}
end,
__tostring = function (dg) return dg:tostring() end,
__index = {
n = function (dgp) return #dgp.names end,
seq = function (dgp) return HTable(seq(1,dgp:n())) end,
set = function (dgp,i,name,value)
if not name then return end
dgp.names[i] = name
if dgp.values then dgp.values[i] = value end
return dgp
end,
iname = function (dgp,i)
return pformat("%d:%s", i, dgp.names[i])
end,
inamevalue = function (dgp,i)
return pformat("%d:%s:%s", i, dgp.names[i], dgp.values[i])
end,
inames = function (dgp, sep)
local f = function (i) return dgp:iname(i) end
return mapconcat(f, dgp:seq(), sep or " ")
end,
inamesvalues = function (dgp, sep)
if not dgp.values then return dgp:inames(sep) end
local f = function (i) return dgp:inamevalue(i) end
return mapconcat(f, dgp:seq(), sep or "\n")
end,
ins = function (dgp, sep) return dgp:inames(sep) end,
invs = function (dgp, sep) return dgp:inamesvalues(sep) end,
tostring = function (dgp, sep) return dgp:ins(sep) end,
},
}
-- «DGetFrame» (to ".DGetFrame")
-- Commented version:
-- (find-angg "LUA/PreTraceback1.lua" "DGetFrame")
-- Idea: running something like
--
-- dgf = DGetFrame.atlevel(99, true, true)
--
-- calls debug.getinfo, debug.getlocal and debug.getupvalue to get a
-- lot of information about the stack frame at level 99, and puts that
-- information in a static object that is easy to inspect. This class
-- is used by the class PreTraceback, defined below, and it stores the
-- locals and upvalues in objects of the class DGetPairs, defined
-- above.
--
DGetFrame = Class {
type = "DGetFrame",
atlevel = function (lvl, storevalues, storeupvalues)
local dg = debug.getinfo(lvl, "nSluf")
if not dg then return end
dg.locals = DGetPairs.new(storevalues)
dg.upvalues = DGetPairs.new(storeupvalues)
for i=1,1000 do
local name,value = debug.getlocal(lvl, i)
if not dg.locals:set(i,name,value) then break end
end
return DGetFrame(dg):getupvalues()
end,
fromfunction = function (f, storevalues, storeupvalues)
local dg = debug.getinfo(f, "nSluf")
dg.locals = DGetPairs.new(storevalues) -- dummy
dg.upvalues = DGetPairs.new(storeupvalues)
return DGetFrame(dg):getupvalues()
end,
getframes = function (storevalues, storeupvalues)
local A = {}
for i=0,1000 do
A[i] = DGetFrame.atlevel(i, storevalues, storeupvalues)
if not A[i] then return A end
end
end,
__tostring = function (dgf) return dgf:tostring() end,
__index = {
getupvalues = function (dgf,n)
for i=1,(n or dgf.nups) do
local name,value = debug.getupvalue(dgf.func, i)
if not dgf.upvalues:set(i,name,value) then break end
end
return dgf
end,
delpairs = function (dgf)
dgf = copy(dgf)
dgf.locals = nil
dgf.upvalues = nil
return dgf
end,
toprintfunction = function (dgf) return PrintFunction(dgf:delpairs()) end,
tostring = function (dgf) return tostring(dgf:toprintfunction()) end,
pf = function (dgf) return dgf:toprintfunction() end,
v = function (dgf) return dgf:toprintfunction():v() end,
},
}
-- «PreTraceback» (to ".PreTraceback")
-- A pretraceback is like a debug.traceback() before it is converted
-- to a string. Commented version:
-- (find-angg "LUA/PreTraceback1.lua" "PreTraceback")
--
PreTraceback = Class {
type = "PreTraceback",
new = function (getvalues, getupvalues)
local frames = DGetFrame.getframes(getvalues, getupvalues)
return PreTraceback(frames)
end,
__tostring = function (pt) return pt:tostring() end,
__index = {
seq = function (pt, a, b, dir)
a,b = (a or #pt),(b or 0)
dir = dir or (a <= b and 1 or -1)
return seq(a, b, dir)
end,
tostring = function (pt, a, b, dir)
local f = function (i) return pformat("%s -> %s", i, pt[i]) end
return mapconcat(f, pt:seq(a, b, dir), "\n")
end,
},
}
-- «Rect» (to ".Rect")
-- Commented version: (find-angg "LUA/Rect.lua")
-- Old notes: (find-es "lua5" "Rect")
-- An old version: (find-es "lua5" "Rect-2019")
--
torect = function (o)
if otype(o) == "Rect" then return o end
if type(o) == "string" then return Rect.new(o) end
error()
end
--
Rect = Class {
type = "Rect",
new = function (str) return Rect(splitlines(str)) end,
rep = function (str, n) local r=Rect{}; for i=1,n do r[i]=str end; return r end,
from = function (o)
if type(o) == "string" then return Rect.new(o) end
if type(o) == "number" then return Rect.new(tostring(o)) end
return o -- missing: test otypeness
end,
--
-- A hack to let us build syntax trees very quickly:
syntree = function (op, a1, ...)
if not a1 then return Rect.from(op) end
local r = Rect.from(a1):syn1(op)
for _,an in ipairs({...}) do r = r:synconcat(Rect.from(an)) end
return r
end,
--
__tostring = function (rect) return rect:tostring() end,
__concat = function (r1, r2) return torect(r1):concat(torect(r2)) end,
__index = {
tostring = function (rect) return table.concat(rect, "\n") end,
copy = function (rect) return copy(rect) end,
width = function (rect)
return rect.w or foldl(max, 0, map(string.len, rect))
end,
push1 = function (rect, str) table.insert(rect, 1, str); return rect end,
push2 = function (rect, str1, str2) return rect:push1(str2):push1(str1) end,
pad0 = function (rect, y, w, c, rstr)
rect[y] = ((rect[y] or "")..(c or " "):rep(w)):sub(1, w)..(rstr or "")
return rect
end,
lower = function (rect, n, str)
for i=1,n do rect:push1(str or "") end
return rect
end,
concat = function (r1, r2, w, dy)
r1 = r1:copy()
w = w or r1:width()
dy = dy or 0
for y=#r1+1,#r2+dy do r1[y] = "" end
for y=1,#r2 do r1:pad0(y+dy, w, nil, r2[y]) end
return r1
end,
prepend = function (rect, str) return Rect.rep(str, #rect)..rect end,
--
-- Low-level methods for building syntax trees:
-- syn1 draws a "|" above a rect and draws the opname above it,
-- synconcat draws two syntax trees side by side and joins them with "_"s.
syn1 = function (r1, opname) return r1:copy():push2(opname or ".", "|") end,
synconcat = function (r1, r2)
return r1:copy():pad0(1, r1:width()+2, "_")..r2:copy():push2(".", "|")
end,
--
-- Low-level methods for building deduction trees:
-- dedconcat draws two deduction trees side by side,
-- dedsetbar draws or redraws the bar above the conclusion,
-- dedaddroot adds a bar and a conclusion below some trees drawn
-- side by side.
dedconcat = function (r1, r2)
local w = r1:width() + 2
if #r1 < #r2 then return r1:copy():lower(#r2-#r1):concat(r2, w) end
if #r1 == #r2 then return r1:copy():concat(r2, w) end
if #r1 > #r2 then return r1:copy():concat(r2, w, #r1-#r2) end
end,
dedsetbar = function (r, barchar, barname)
if #r == 1 then table.insert(r, 1, "") end
local trim = function (str) return (str:match("^(.-) *$")) end
local strover = trim(r[#r-2] or "") -- the hypotheses above the bar
local strunder = trim(r[#r]) -- the conclusion below the bar
local len = max(#strover, #strunder)
local bar = (barchar or "-"):rep(len)
r[#r-1] = bar..(barname or "")
return r
end,
dedaddroot = function (r, rootstr, barchar, barname)
table.insert(r, "") -- The bar will be here.
table.insert(r, rootstr) -- Draw the conclusion,
return r:dedsetbar(barchar, barname) -- and then set the bar.
end,
},
}
-- «SynTree» (to ".SynTree")
-- Commented version:
-- (find-angg "LUA/Rect.lua")
-- (find-angg "LUA/Rect.lua" "SynTree")
--
SynTree = Class {
type = "SynTree",
from = function (A) return deepcopymt(A, SynTree) end,
torect = function (o)
if type(o) == "number" then return Rect.new(tostring(o)) end
if type(o) == "string" then return Rect.new(o) end
if type(o) == "table" then
local op = o[0]
if type(op) == "number" then op = tostring(op) end
if #o == 0 then return Rect.new(op or ".") end
local r = SynTree.torect(o[1]):syn1(op)
for i=2,#o do r = r:synconcat(SynTree.torect(o[i])) end
return r
end
end,
__tostring = function (o) return o:torect():tostring() end,
__index = {
torect = function (o)
return SynTree.torect(o)
end,
},
}
-- «DedTree» (to ".DedTree")
-- Commented version:
-- (find-angg "LUA/Rect.lua")
-- (find-angg "LUA/Rect.lua" "DedTree")
--
DedTree = Class {
type = "DedTree",
from = function (A) return deepcopymt(A, DedTree) end,
torect = function (o)
if type(o) == "number" then return Rect.new(tostring(o)) end
if type(o) == "string" then return Rect.new(o) end
if type(o) == "table" then
if #o == 0 then
local r = DedTree.torect(o[0] or "?")
r:dedsetbar(o.bar, o.label)
return r
else
r = DedTree.torect(o[1])
for i=2,#o do r = r:dedconcat(dedtorect(o[i])) end
return r:dedaddroot(o[0] or "?", o.bar, o.label)
end
end
error()
end,
__tostring = function (o) return o:torect():tostring() end,
__index = {
torect = function (o)
return DedTree.torect(o)
end,
},
}
-- «re_expand_INFIX» (to ".re_expand_INFIX")
-- (find-es "lua-intro" "lpeg-re-infix-2")
-- (find-angg "LUA/Re-infix.lua" "preproc_infix")
re_expand_INFIX_0 = function (parenstr)
local components = split(parenstr:sub(2, -2))
local e = table.remove(components, 1)
local sep = table.remove(components, 1)
local ops = components
local quote = function (str) return '"'..str..'"' end
local oneop = function (ops) return mapconcat(quote, ops, " / ") end
local tbl = {E=e, SEP=sep, OP=oneop(ops)}
local re = string.gsub("(E s ({OP} SEP E)*)", "[A-Z]+", tbl)
return re
end
re_expand_INFIX = function (gram)
return (string.gsub(gram, "INFIX(%b())", re_expand_INFIX_0))
end
-- «math-grammar» (to ".math-grammar")
-- (find-gab "gab.lua" "lpeg-parser")
-- (find-gabfile "gab.lua" "Expr.__index.infix =")
-- Missing: _, __, (), {|,,}, {,,}, Fa/Ex/Lambda, :, not, unary-
math_grammar_0 = [[
e75 <- INFIX( e70 s | ) -> f_nonassoc
e70 <- INFIX( e65 s , ) -> f_nary
e65 <- INFIX( e60 s <- ) -> f_nonassoc
e60 <- INFIX( e55 s -> ) -> f_nonassoc
e55 <- INFIX( e50 s or ) -> f_left
e50 <- INFIX( e45 s & ) -> f_left
e45 <- INFIX( e40 s not ) -> f_OOOOOOOOOOOOPS
e40 <- INFIX( e35 s in ) -> f_nonassoc
e35 <- INFIX( e30 s <= < == != >= > ) -> f_nary
e30 <- INFIX( e25 s + - ) -> f_left
e25 <- INFIX( e20 s // / * ) -> f_left
e20 <- INFIX( e15 s ^ ) -> f_right
]]
-- «Re» (to ".Re")
-- Commented version:
-- (find-angg "LUA/Re.lua")
-- (find-angg "LUA/Re.lua" "Re-tests")
--
Re = Class {
type = "Re",
__tostring = function (r) return mytostringv(r) end,
__call = function (r, subj, init) return r:test(subj, init) end,
--
__index = {
grammar = "",
defs = {},
preproc = function (res0) return res0 end,
--
-- Every call to r:compile(str) overwrites
-- the fields r.res0, r.res, and r.rec of r.
compile = function (r, res0)
local res = r.preproc(res0) .. r.grammar
r.res0 = res0
r.res = res
if res == res0 then r.res0 = nil end
r.rec = re.compile(r.res, r.defs)
return r
end,
match = function (r, subj, init)
return r.rec:match(subj, init)
end,
test = function (r, subj, init)
if r.print
then (r.print)(r:match(subj, init))
else return r:match(subj, init)
end
end,
--
p = function (r, ...) print(r.res) end,
c = function (r, ...) return r:compile(...) end,
cc = function (r, ...) return copy(r):compile(...) end,
},
}
-- «strlen8» (to ".strlen8")
-- (find-es "lua5" "utf8")
-- (find-angg "LUA/Und2D1.lua" "u8split")
string.len8 = function (str) return str:gsub("[\128-\191]+", ""):len() end
strlen8 = string.len8
-- «untabify» (to ".untabify")
-- Note: to untabify strings in encodings where chars can be more than
-- 1-byte long, change the "strlen" below... (I never had to do that,
-- though).
untabify_table =
{" ", " ", " ", " ", " ", " ", " ", " "}
--{"--------", "-------", "------", "-----", "----", "---", "--", "-"}
untabify_strtab = function (strbeforetab)
return strbeforetab ..
untabify_table[math.fmod(strlen(strbeforetab), 8) + 1]
end
untabify = function (str)
return (gsub(str, "([^\t\r\n]*)\t", untabify_strtab))
end
-- «untabify8» (to ".untabify8")
untabify8_strtab = function (strbeforetab)
return strbeforetab ..
untabify_table[math.fmod(strlen(strbeforetab), 8) + 1]
end
untabify8 = function (str)
return (gsub(str, "([^\t\r\n]*)\t", untabify_strtab))
end
-- «utf8tohtml» (to ".utf8tohtml")
-- (find-es "lua5" "utf8-to-html")
utf8pat = "[\192-\253][\128-\191]+"
utf8ctohtml = function (u)
local a, b = u:byte(1, 2)
local code = (a-192)*64+(b-128)
return format("&#x%X;", code)
end
utf8tohtml0 = function (str)
return (str:gsub(utf8pat, utf8ctohtml))
end
utf8tohtml = function (str)
local str2 = str:gsub("[&<>]", {["&"]="&", ["<"]="<", [">"]=">"})
return utf8tohtml0(str2)
end
-- «u8c_to_l1» (to ".u8c_to_l1")
-- (find-es "charsets" "l1_to_u8")
u8c_l1_pat = "[\194-\195][\128-\191]"
u8c_to_code = function (u)
local a, b = u:byte(1, 2)
return (a-192)*64+(b-128)
end
u8c_to_l1 = function (u)
return string.char(u8c_to_code(u))
end
measure_utf8_ness = function (bigstr)
local bigstr_, n_u8_l1_pairs = bigstr:gsub(u8c_l1_pat, "")
local bigstr__, n_other_l1s = bigstr_:gsub("[\128-\255]", "")
return n_u8_l1_pairs, n_other_l1s
end
-- «u8_to_l1» (to ".u8_to_l1")
-- (find-es "charsets" "u8_to_l1")
-- (ee-insert '(128 255))
-- (find-einsert '((128 255)))
-- (find-einsert '((128 191)))
-- (find-einsert '((196 255)))
-- u8_to_l1 = function (str)
-- local f = function (cc) return string.char(cc:byte(2)+64) end
-- return (str:gsub("\195[\128-\191]", f))
-- end
u8_to_l1 = function (bigstr)
return (bigstr:gsub(u8c_l1_pat, u8c_to_l1))
end
u8_to_l1_maybe = function (bigstr)
local ngoodpairs, nbadchars = measure_utf8_ness(bigstr)
if ngoodpairs > 0 and nbadchars == 0 then return u8_to_l1(bigstr) end
return bigstr
end
-- «toslashhex» (to ".toslashhex")
toslashhex1 = function (c) return format("\\%d", string.byte(c)) end
toslashhex = function (str) return (str:gsub("[\128-\255]", toslashhex1)) end
-- «divmod» (to ".divmod")
-- http://lars.nocrew.org/forth2012/core/DivMOD.html
-- (find-es "lua5" "math.fmod")
divmod = function (a, b) return (a-(a%b))/b, a%b end
-- «loadblogme3» (to ".loadblogme3")
-- (find-es "blogme" "interactive")
-- (find-angg ".emacs" "blogme3")
loadblogme3 = function (msg)
blogmedir = ee_expand "~/blogme3/"
ee_dofile "~/blogme3/blogme3.lua" -- not a "require"! Fix this?
b = doblogme
if msg then print 'See: (find-es "blogme" "interactive")' end
end
loadblogme3rest = function ()
pathtoroot = getpathtoroot("")
eevarticle = pathto("eev-article.html")
eepitchreadme = pathto("eev-current/eepitch.readme.html")
eepitch_el = pathto("eev-current/eepitch.el.html")
eevintrosdir = pathto("eev-intros/")
require "angglisp"
end
loadblogme3all = function (msg)
loadblogme3(msg)
loadblogme3rest()
end
-- «savevars» (to ".savevars")
-- (find-es "lua5" "savevars")
savevars = function (restorefromargs, ...)
local values = pack(...)
local restorevars = function () restorefromargs(unpack(values)) end
return restorevars
end
-- __ _
-- / _| ___ _ __ _ __ ___ __ _| |_
-- | |_ / _ \| '__| '_ ` _ \ / _` | __|
-- | _| (_) | | | | | | | | (_| | |_
-- |_| \___/|_| |_| |_| |_|\__,_|\__|
--
-- «variants-of-format» (to ".variants-of-format")
-- See also: (find-es "lua5" "formatt-and-printt")
-- (find-dn6 "output.lua" "formatt")
-- «minus-0» (to ".minus-0")
-- (find-es "lua5" "minus-0-email")
-- http://lua-users.org/lists/lua-l/2022-05/msg00082.html
-- truncn = function (n) return trunc0(string.format("%.3f", n)) end
-- truncn = function (n) return trunc0(string.format("%.3f", fix0(n))) end
fix0 = function (x) if (x == 0) then return 0 else return x end end
-- «trailing-zeroes» (to ".trailing-zeroes")
-- «pformat» (to ".pformat")
-- (find-es "lua5" "string.format")
-- (find-es "lua5" "pformat")
trunc0 = function (str) return str:reverse():gsub("^0*%.?", ""):reverse() end
truncn = function (n) return trunc0(string.format("%.3f", n)) end
myntos = function (n) return trunc0(string.format("%.3f", n)) end
pformat1 = function (o)
if type(o) == "number" then return truncn(o) end
return tostring(o)
end
pformatargs = function (...)
local n = select("#", ...)
return myunpack(map(pformat1, {...}, n), 1, n)
end
pformat = function (fmt, ...)
return format(fmt, pformatargs(...))
end
pformatexpr = function (exprstr)
return table.concat(map(pformat1, {expr(exprstr)}))
end
-- «dformat» (to ".dformat")
-- (find-es "lua5" "dformat")
-- In Lua5.3 this yields an error instead of truncating the 2.3 to an integer:
-- string.format("foo %d bar", 2.3)
-- This quick hack lets my use
-- string.dformat("foo %d bar", 2.3) -- or:
-- dformat("foo %d bar", 2.3)
-- to get the old behavior in any (?) version of Lua.
--
if _VERSION:sub(5) < "5.3" then
dformat_fmt = function (fmt) return fmt end
string.dformat = string.format
dformat = string.format
else
dformat_fmt = function (fmt) return (fmt:gsub("%%d", "%%.0f")) end
string.dformat = function (fmt, ...)
return string.format(dformat_fmt(fmt), ...)
end
dformat = string.dformat
end
-- (find-lua53manual "#8" "integer subtype")
toint = math.floor -- for 5.3
-- «string-methods» (to ".string-methods")
-- A note about "string methods": if s is a string, then a piece of
-- code like "s:rep(2)" works like "string.rep(s, 2)"; this is a
-- Lua-5.1-ism that is not described in the first edition of PiL - the
-- one that is online, that covers only Lua 5.0. When we do
--
-- s = "foo"
-- print(s:rep(2))
--
-- then the "s:rep(2)" is syntax sugar for 's["rep"](s,2)'. At first
-- sight, the table access s["rep"] should fail, but in 5.1 strings
-- have a metatable like this:
--
-- setmetatable("str", {__index = string})
--
-- and so instead of failing Lua does something else... the s["rep"]
-- becomes getmetatable(s).__index["rep"], and that is just
-- string["rep"], i.e., string.rep; so, s:rep(2) works like
-- string.rep(s, 2).
--
-- See:
-- (find-lua51manual "#2.2" "a.name as syntactic sugar")
-- (find-lua51manual "#2.5.8" "v:name(args)" "v.name(v,args)")
-- (find-lua51manual "#2.8" "Tables and userdata have individual metatables")
-- (find-lua51manual "#2.8" "table[key]" "h = metatable(table).__index")
-- (find-lua51manual "#5.4" "object-oriented style" "s:byte(i)")
-- (find-lua51manual "#pdf-string.rep")
-- (find-pilw3m "13.4.1.html" "The __index Metamethod")
-- «otherfunctions» (to ".otherfunctions")
-- «0-based» (to ".0-based")
-- (find-es "lua5" "0-based")
-- 0-based string functions.
-- (To do: remove this! I think I only use 0-based string functions at
-- dednat4 - and now I'm almost getting used to the 1-based
-- conventions...)
-- (find-sh "lua -e \"print(substr0('abcdef', 2, 3)) --> cde\"")
substr0 = function (str, start0, len)
return string.sub(str, start0 + 1, len and start0 + len)
end
-- «P-old» (to ".P-old")
-- Like "print", but distinguishing strings from numbers, and using "<>"s.
-- See: (find-lua51manual "#pdf-type")
-- Examples:
-- print(nil, 22, "33", {}, false, print)
--> nil 22 33 table: 0x806da60 false function: 0x806b388
-- P(nil, 22, "33", {}, false, print)
--> <nil> 22 "33" <table> <boolean> <function>
--
P = function (...)
local arg = arg or pack(...) -- for Lua 5.2
for i=1,arg.n do
local v = arg[i]
if type(v)=="number" then printf(" %d", v)
elseif type(v)=="string" then printf(" %q", v)
else printf(" <%s>", type(v))
end
end
print()
end
-- «P-old-tests» (to ".P-old-tests")
-- P(string.find("0123456789", "3(45)(67)", 4)) --> 4 8 "45" "67"
-- P(string.find("0123456789", "3(45)(67)", 5)) --> <nil>
-- Note: in Lua5.0 "table.foreach(t, print)" could be used to inspect tables.
-- Ref: http://lua-users.org/lists/lua-l/2008-02/msg00932.html
-- http://lua-users.org/lists/lua-l/2008-02/msg00944.html
-- «PP-old» (to ".PP-old")
-- 2015aug20: oveeriden by: (to "Tos")
-- (to "mytostring")
-- My favourite function for inspecting data!
-- This is like "print" too, but it uses "mytostring" to print the
-- contents of tables recursively. The output format is compact,
-- human-friendly, and simple to understand and to implement. Note: on
-- cyclic structures "mytostring" will loop and break; and metatables
-- are ignored (I use them very rarely, btw).
-- Examples:
-- PP(nil, true, false, 22, "22", "a\nb", print, nil)
--> <nil> <true> <false> 22 "22" "a\
-- b" <function: 0x806b388> <nil>
--
-- PP({44, 55, nil, 77, [{a=11}]={[22]="b"}, [{}]={}, [{}]={}})
--> {1=44, 2=55, 4=77, {"a"=11}={22="b"}, {}={}, {}={}}
--
-- PP = function (...)
-- -- local arg = arg or pack(...) -- for Lua 5.2
-- local arg = pack(...)
-- for i=1,arg.n do printf(" %s", mytostring(arg[i])) end
-- printf("\n")
-- return myunpack(arg) -- todo: change to "..." (a 5.1-ism)
-- end
-- «PPP-old» (to ".PPP-old")
-- Useful for debugging sometimes.
-- I haven't used this in ages.
-- I reused the name for something else.
-- PP(string.rep("ab", 4))
--> "abababab"
-- PP(string.rep(PPP("rep:")("ab", 4)))
--> (rep: "ab" 4)"abababab"
--
-- PPP = function (idstr)
-- return function (...)
-- printf("(%s", idstr)
-- for i=1,arg.n do printf(" %s", mytostring(arg[i])) end
-- printf(")")
-- return unpack(arg)
-- end
-- end
-- «follow» (to ".follow")
follow = function (o, str)
local w, rest = str:match("(%S+)%s*(.*)")
if not w then return o end
if w == "()" then return follow(o(), rest) end
if w == "{}" then return follow(o{}, rest) end
if w == "mt" then return follow(getmetatable(o), rest) end
return follow(o[w], rest)
end
-- «NamedFunction» (to ".NamedFunction")
-- (find-es "lua5" "NamedFunction")
-- Obsolete, superseded by: (to "Code")
-- (find-angg "LUA/Code.lua")
-- (find-angg "LUA/Code.lua" "Code-tests")
--
NamedFunction = Class {
type = "NamedFunction",
__tostring = function (o) return o.name end,
__call = function (o, ...) return o.f(...) end,
__index = {
},
}
lambda = function (str)
local vars,rest = str:match "^ *([%w_,]*)[ .:]*(.-) *$"
local body = rest:gsub("=>", " return ")
local code = "return function ("..vars..")\n"..body.."\nend"
local name = "("..vars..": "..rest..")"
local f = assert(loadstring(code))()
-- return NamedFunction {name=name, f=f}
return NamedFunction {name=name, code=code, f=f}
end
-- «envsubst» (to ".envsubst")
-- (find-es "lua5" "envsubst")
-- Obsolete?
setenv_ = {}
setenv = function (varname, value) setenv_[varname] = value end
getenv = function (varname) return setenv_[varname] or os.getenv(varname) end
envsubst = function (str)
return string.gsub(str, "%$([%a_][%w_]*)", function (e)
return getenv(e) or ""
end)
end
-- «mytostring-old» (to ".mytostring-old")
-- My old versions of "mystotring", that didn't use metatables, are here:
-- (find-angg "LUA/tos.lua")
-- (find-angg "LUA/tos2.lua")
-- The current version of mystotring is implemented using the class Tos.
-- These functions are used by: (to "PP")
-- Possible replacements:
-- (find-dn5 "tos.lua")
-- «ee_loadlib» (to ".ee_loadlib")
ee_loadlib = function (libname, funcname)
return assert(package.loadlib(ee_expand(libname), funcname))()
end
-- «ee_ls» (to ".ee_ls")
-- (find-es "lua5" "posix-ls")
ee_ls = function (dir)
userocks()
require "posix"
return (posix.dir(ee_expand(dir)))
end
-- «load_dednat4» (to ".load_dednat4")
-- See: (to "loaddednat6")
-- (find-angg ".emacs" "eepitch-dednat4")
-- (find-es "xypic" "eepitch-dednat4")
-- (find-dn4 "dednat4.lua" "diag-head")
-- (find-dn4 "dednat4.lua" "abbrev-head")
-- (find-dn4 "dednat4.lua" "tree-head" "treeheadcode1")
-- (find-dn4 "dednat4.lua" "processfile")
-- (defun eepitch-dednat4 () (interactive) (eepitch-comint "dednat4" "lua51 -e load_dednat4() -i"))
-- (eepitch-kill)
-- (eepitch-dednat4)
load_dednat4 = function ()
dednat4dir = dednat4dir or ee_expand("~/dednat4/")
print("Loading: " .. dednat4dir .. "dednat4.lua")
dofile(dednat4dir .. "dednat4.lua")
A = function (abbrev, expansion) addabbrev(abbrev, expansion) end
D = function (linestr) dofs(untabify(linestr)) end
DX = function (linestr) dxy2Dx(untabify(linestr)) end
D2 = function (linestr) dxy2D(untabify(linestr)) end
end
-- «load_posix» (to ".load_posix")
-- This is for lua-5.0, for 5.1 see: (to "loadposix")
-- (find-es "lua5" "load_posix")
-- (find-es "lua5" "posix-install")
load_posix = function ()
userocks(); require "posix"
-- assert(loadlib(getenv("HOME").."/.lua50/lposix.so", "luaopen_posix"))()
end
-- «load_PP» (to ".load_PP")
-- Load PP.so, that defines a C function called PP for inspecting the stack.
-- Old version, for lua-5.0:
-- -- (find-angg ".lua50/PP.c")
-- load_PP = function ()
-- assert(loadlib(getenv("HOME").."/.lua50/PP.so", "PP_init"))()
-- end
-- New version, for lua-5.1:
load_PP = function ()
assert(package.loadlib(getenv("HOME").."/.lua51/PP.so", "PP_init"))()
end
-- 2008dec01: load_PP is not needed for debugging anymore!...
-- The user-defined GDB command `PP' used to call the C function `PP',
-- that was defined in PP.c/PP.so - but I changed the GDB `PP' to make
-- it run directly all the calls to Lua that the C `PP' used to make.
-- See: (find-angg ".lua51/PP.c")
-- (find-angg ".lua51/PP.gdb")
-- «PPeval» (to ".PPeval")
-- (find-angg ".lua51/PP.gdb" "PPeval")
-- (find-lua51file "src/lua.c" "first line starts with `=' ?")
PPeval = function (str)
local e, code = string.match(str, "^(=?=?)(.*)$")
local eval = function (str) return assert(loadstring(str))() end
if e == "==" then PP(eval("return "..code))
elseif e == "=" then print(eval("return "..code))
else return eval(code)
end
end
-- «loadlpeg» (to ".loadlpeg")
-- (find-es "lua5" "lpeg-0.7")
-- (find-es "lua5" "lpeg-0.8.1")
-- (find-es "lua5" "lpeg-0.9")
-- (find-es "lua5" "lpeg")
loadlpeg = function ()
local oldcpath = package.cpath
package.cpath = ee_expand("~/usrc/lpeg-0.9/?.so")..";"..oldcpath
require "lpeg"
package.cpath = oldcpath
lpeg.test = function (pat, str) PP(pat:C():match(str)) end
lpeg.testt = function (pat, str) PP(pat:Ct():match(str)) end
lpeg.togsub = lpeg_togsub -- (to "lpeg_togsub")
lpeg.gsub = lpeg_gsub -- (to "lpeg_gsub")
lpeg.gsub_ = lpeg_gsub_ -- (to "lpeg_gsub_")
lpeg.Balanced = lpeg_balanced -- (to "lpeg_balanced")
end
-- «loadlpegrex» (to ".loadlpegrex")
-- (find-es "lpeg" "lpegrex")
loadlpegrex = function (dir)
dir = dir or "~/usrc"
Path.prepend("path", dir.."/lpeglabel/?.lua")
Path.prepend("cpath", dir.."/lpeglabel/?.so")
Path.prepend("path", dir.."/lpegrex/?.lua")
lpegrex = require 'lpegrex'
end
-- «loadpegdebug» (to ".loadpegdebug")
-- (find-es "lpeg" "pegdebug")
loadpegdebug = function ()
Path.prepend("path", "~/usrc/PegDebug/src/?.lua")
lpeg = require "lpeg"
pegdebug = require "pegdebug"
end
-- «loadbitlib» (to ".loadbitlib")
-- Obsolete. See: (find-es "lua5" "bitlib-51")
-- «autoload» (to ".autoload")
-- Obsolete.
-- «loadtcl» (to ".loadtcl")
-- Obsolete.
-- -- (find-es "lua5" "luatclbridge")
-- -- (find-angg "LUA/luatclbridge.c")
-- -- loadtcl = function ()
-- -- local filename = ee_expand("~/LUA/tlbridge.so")
-- -- local initname = "luaopen_tlbridge"
-- -- tcl = tcl or assert(package.loadlib(filename, initname))()
-- -- end
-- loadtcl = function ()
-- -- local filename = ee_expand("~/LUA/luatclbridge.so")
-- local filename = ee_expand("~/.lua51/luatclbridge.so")
-- local initname = "luaopen_luatclbridge"
-- if not tcl then
-- tcl, tclfindexecutable = assert(package.loadlib(filename, initname))()
-- tclfindexecutable("/home/edrx/usrc/tk8.4/tk8.4-8.4.12/unix/wish") -- test
-- end
-- end
-- loadtk = function () loadtcl(); return tcl("package require Tk") end
-- loadexpect = function () loadtcl(); return tcl("package require Expect") end
-- loadsnack = function () loadtcl(); return tcl("package require sound") end
-- -- (find-es "tcl" "snack")
-- -- (find-anggfile "TCL/piano.tcl")
-- «loadldb» (to ".loadldb")
-- Obsolete.
-- -- (find-es "lua5" "ldb-from-tgz")
-- -- (find-es "lua5" "ldb")
-- loadldb = function ()
-- local oldpath = package.path
-- -- package.path = ee_expand("$S/http/primero.ricilake.net/lua/?.lua")
-- -- package.path = ee_expand("~/LUA/?.lua")
-- package.path = ee_expand("~/usrc/ldb/?.lua")
-- ldb = require "ldb"
-- package.path = oldpath
-- end
-- «loadpeek» (to ".loadpeek")
-- Obsolete.
-- -- (find-angg "DAVINCI/peek.c")
-- -- (find-angg "DAVINCI/peek.lua")
-- loadpeek = function ()
-- if not peek then
-- assert(package.loadlib(ee_expand("~/DAVINCI/peek.so"), "peek_init"))()
-- end
-- end
-- getaddr = function (obj)
-- return tonumber(string.match(tostring(obj), " 0x([0-9A-Za-z]+)"), 16)
-- end
-- «loadalarm» (to ".loadalarm")
-- Obsolete. See: (find-es "lua5" "signal")
-- «loadposix» (to ".loadposix")
-- New way (active below): (find-es "lua5" "luaposix")
-- old way (deleted): (find-es "lua5" "posix-lua51")
loadposix = function ()
userocks(); require "posix"
end
-- «curl» (to ".curl")
-- (find-man "1 curl" "-s, --silent")
curl = function (url)
local cmd = format("curl -s '%s'", url)
return getoutput(cmd)
end
-- «preparef2n» (to ".preparef2n")
-- Supersed by: (find-angg "LUA/DFS.lua")
-- Very old notes: (find-es "lua5" "functionnames")
-- «each2» (to ".each2")
-- (find-es "lua5" "each2")
-- (find-pilw3m "7.1.html" "Iterators and Closures")
each2 = function (tbl)
local i = 1
return function ()
if i <= table.getn(tbl) then
i = i + 2
return tbl[i - 2], tbl[i - 1]
end
end
end
-- «translatechars» (to ".translatechars")
-- (find-node "(coreutils)Translating")
translatechars = function (str, re, tbl)
return (gsub(str, re, function (c) return tbl[c] or c end))
end
-- chartranslator = function (re, tbl)
-- return function (str)
-- return gsub(str, re, function (c) return tbl[c] or c end)
-- end
-- end
--
-- sgmlify = chartranslator(sgmlify_re, sgmlify_table)
-- _
-- | | _ __ ___ __ _
-- | | | '_ \ / _ \/ _` |
-- | |___| |_) | __/ (_| |
-- |_____| .__/ \___|\__, |
-- |_| |___/
--
-- «lpeg» (to ".lpeg")
-- «sbeconcat» (to ".sbeconcat")
-- Concatenate a table with strings and with begin/end pairs
-- Example:
-- sbeconcat("abfoocd"){1, 3, "FOO", 6, 8} --> "abFOOcd"
-- This is ugly! concatbestrings, below, is much clearer.
--
sbeconcat = function (subj, f)
f = f or function (str) return str end
return function (table1)
local table2, i, n = {}, 1, table.getn(table1)
while i <= n do
local obj = table1[i]
if type(obj) == "string" then
tinsert(table2, obj)
i = i + 1
else
local str = string.sub(subj, obj, table1[i+1] - 1)
tinsert(table2, f(str)) --< sgmlify?
i = i + 2
end
end
return table.concat(table2)
end
end
-- «concatbestrings» (to ".concatbestrings")
-- A "table of bestrings" is a table containing pairs of numbers
-- (begin/end pairs) and strings. Example:
-- concatbestrings("abfoocd", nil, {1, 3, "FOO", 6, 8}) --> "abFOOcd"
-- (a table of bestrings) -> \-----------------/
--
concatbestrings = function (subj, f, bestrings)
f = f or function (s) return s end
local table2, i = {}, 1
while i <= #bestrings do
local obj = bestrings[i]
if type(obj) == "string" then
table.insert(table2, obj)
i = i + 1
else
local str = string.sub(subj, obj, bestrings[i+1] - 1)
table.insert(table2, f(str))
i = i + 2
end
end
return table.concat(table2)
end
curriedconcatbestrings = function (subj, f)
return function (bestrings)
return concatbestrings(subj, f, bestrings)
end
end
-- «lpeg_togsub» (to ".lpeg_togsub")
-- «lpeg_gsub» (to ".lpeg_gsub")
-- A pattern that returns a string can be "Kleene-starred with
-- the least possible filling" to create a pattern that works
-- somewhat like a gsub, but that returns a table of bestrings...
-- Roughly, that would be like converting "(pat)" into
-- "\\(().-()(pat)\\)*().-()", where the "\\(...\\)" is a "shy
-- group" - i.e., its parentheses do not return a capture.
--
-- Actually this returns a sequence of captures, not a table; use Ct()
-- to pack them in to a table, and then a concatbestrings.
--
-- The logic: the pattern PosPosWord, below, works like this:
--
-- -> Pos -----+1--> Pos --> Word -->
-- ^ 2
-- | \---> Anychar ->\
-- | |
-- \------------------/
--
-- where each "Pos" returns a number, and "Word" returns a string.
-- The "1" and the "2" indicate the order in which the branches are
-- tried (at the "+"). The rest of the function shouldn't be hard to
-- understand.
--
-- (find-es "lua5" "lpeg-quickref")
lpeg_togsub = function (Word)
local Pos = lpeg.Cp()
local AnyChar = lpeg.P(1)
local BeRest = Pos * AnyChar^0 * Pos
local PosPosWord = Pos * lpeg.P { Pos * Word + AnyChar * lpeg.V(1) }
return PosPosWord^0 * BeRest
end
lpeg_gsub = function (Word, subj, f)
f = f or function (...) return ... end
return concatbestrings(subj, f, Word:togsub():Ct():match(subj))
end
-- Example:
-- loadlpeg()
-- Word = lpeg.R("AZ")^1 / function (s) return "<"..s..">" end
-- = Word:gsub("abFOOcdBAR", function (s) return "_"..s.."_" end)
-- --> "_ab_<FOO>_cd_<BAR>__"
-- «lpeg_gsub_» (to ".lpeg_gsub_")
-- An alternative (faster but more complex):
-- With gsub_ we can reuse a prebuilt :togsub():Ct() pattern,
-- without having to build it anew each time.
-- loadlpeg()
-- WordTogsubCt = Word:togsub():Ct()
-- = WordTogsubCt:gsub_("abFOOcdBAR", function (s) return "_"..s.."_" end)
-- --> "_ab_<FOO>_cd_<BAR>__"
--
lpeg_gsub_ = function (WordTogsubCt, subj, f)
f = f or function (...) return ... end
return concatbestrings(subj, f, WordTogsubCt:match(subj))
end
-- «lpeg_balanced» (to ".lpeg_balanced")
-- (find-angg "LUA/preproc.lua")
lpeg_balanced = function (Open, MidChars, Close)
local Middle
Open = lpeg.P(Open)
Close = lpeg.P(Close)
MidChars = MidChars or (1 - (Open + Close))^1
Middle = lpeg.P { (MidChars + Open * lpeg.V(1) * Close)^0 }
return Open * Middle:C() * Close, Middle
end
-- «ee_template» (to ".ee_template")
-- (find-eev "eev-template0.el")
-- ee_template({a="<AA>", b="<BB>"}, "foo{a}bar{c}plic")
-- --> "foo<AA>bar{c}plic"
ee_template = function (pairs, templatestr)
return (string.gsub(templatestr, "{([^{}]+)}", pairs))
end
-- «ee_into» (to ".ee_into")
-- ee_into("a b c", "<AA> <BB>")
-- --> {"a"="<AA>", "b"="<BB>"}
ee_into = function (fieldnames, data)
if type(fieldnames) == "string" then fieldnames = split(fieldnames) end
if type(data) == "string" then data = split(data) end
local o = {}
for i=1,#fieldnames do o[fieldnames[i]] = data[i] end
return o
end
-- «chdir» (to ".chdir")
-- 2008may23 / 2020jan17
-- See: (find-es "lua5" "luaposix-git")
chdir = function (dir)
loadposix()
if not posix.chdir then posix.chdir = posix.unistd.chdir end
return assert(posix.chdir(ee_expand(dir)))
end
-- «userocks» (to ".userocks")
-- (find-es "luarocks" "path")
-- (find-angg ".emacs" "luarocks")
-- (find-lua51manual "#pdf-require")
-- (find-lua51manual "#pdf-package.path")
-- (find-lua51manual "#pdf-package.cpath")
-- (find-fline "~/usrc/luarocks/share/lua/5.1/")
-- (find-fline "~/usrc/luarocks/lib/lua/5.1/")
userocks = function ()
local luarocksdir = ee_expand "~/usrc/luarocks"
local HOME = ee_expand "~/"
package.path = package.path ..";"..luarocksdir.."/share/lua/5.1/?.lua"
package.cpath = package.cpath..";"..luarocksdir.."/lib/lua/5.1/?.so"
package.path = package.path ..";"..HOME..".luarocks/share/lua/5.1/?.lua"
local req = function (pkgname) return function () require(pkgname) end end
loadposix = req "posix"
load_posix = req "posix"
end
-- «hms_to_s» (to ".hms_to_s")
-- «s_to_hms» (to ".s_to_hms")
hms_to_s = function (hms)
local zeros = "00:00:00"
hms = zeros:sub(1, #zeros-#hms)..hms
return hms:sub(1, 2)*3600 + hms:sub(4, 5)*60 + hms:sub(7, 8)
end
s_to_hms = function (s)
local f = function (n) local a = math.fmod(n, 60); return a, (n-a)/60 end
local s,m = f(s)
local m,h = f(m)
if h > 0
then return format("%d:%02d:%02d", h, m, s)
else return format( "%d:%02d", m, s)
end
end
-- «icollect» (to ".icollect")
-- (find-es "lua5" "icollect")
-- «Repl1.lua» (to ".Repl1.lua")
-- (find-angg "LUA/Repl1.lua")
run_my_repl_now = function ()
ee_dofile "~/LUA/Repl1.lua"
r = EdrxRepl.new()
r:repl()
end
stop_my_repl_now = function ()
dg = dgis
r.STOP = "plz"
end
-- «Repl2.lua» (to ".Repl2.lua")
-- (find-angg "LUA/Repl2.lua" "Repl2")
-- (find-angg "LUA/Repl2.lua" "Repl2" "while not r.STOP do")
run_repl2_now = function ()
ee_dofile "~/LUA/Repl2.lua"
r = Repl2.new()
r:repl()
end
stop_repl2_now = function ()
r.STOP = "plz"
end
-- «Repl3.lua» (to ".Repl3.lua")
-- (find-angg "LUA/Repl3.lua")
run_repl3_now = function ()
Path.addLUAtopath()
require "Repl3"
r = Repl.new()
r:repl()
end
stop_repl3_now = function ()
r.STOP = "plz"
end
-- «mytraceback» (to ".mytraceback")
-- «errorfb_line» (to ".errorfb_line")
-- Obsolete.
-- See: (find-angg "LUA/Repl1.lua")
-- and: (find-angg "LUA/lua50init.lua" "DGetInfos")
-- (find-angg "LUA/lua50init.lua" "DGetInfos" "tb =")
-- «interactor» (to ".interactor")
-- Obsolete (from 2007). Deleted.
-- (find-es "lua5" "interactor")
-- (find-TH "repl")
-- «MyXpcall» (to ".MyXpcall")
-- Obsolete! Moved to: (find-angg "LUA/myxpcall.lua" "MyXpcall")
-- Superseded by: (find-angg "edrxrepl/edrxpcall.lua")
--
-- «Repl» (to ".Repl")
-- Obsolete. See: (find-es "lua5" "Repl")
-- Superseded by: (find-angg "edrxrepl/edrxrepl.lua")
-- (find-angg "edrxrepl/edrxrepl.lua" "Repl")
-- (find-angg "LUA/Repl1.lua")
-- «loadluarepl» (to ".loadluarepl")
-- Obsolete.
-- See: (find-es "lua5" "lua-repl-0.8")
-- And: (find-dednat6 "dednat6/luarepl.lua")
-- TODO: replace all uses of this by the Repl class defined above.
-- «replaceranges» (to ".replaceranges")
-- str = "(foo bar)"
-- ranges = {{6,9,"BAR"}, {2,5, string.upper}}
-- = replaceranges(str, ranges)
replaceranges_ = function (str, ranges, spos, rpos, f)
local range = ranges[rpos]
if not range then return str:sub(spos) end
local a, b, s_or_f = range[1], range[2], range[3]
local s = (type(s_or_f) == "string")
and s_or_f
or s_or_f(str:sub(a, b-1))
return f(str:sub(spos, a-1)) .. s ..
replaceranges_(str, ranges, b, rpos+1, f)
end
replaceranges = function (str, ranges, f)
table.sort(ranges, function (a, b) return a[1]<b[1] end)
return replaceranges_(str, ranges, 1, 1, f or id)
end
-- «string.replace» (to ".string.replace")
-- a = "abcdefg"
-- a:replace(2, "CDE") --> "abCDEfg"
-- a:replace(2, "CDE", 4) --> "abCDE g"
--
string.leftof = function (s, w)
if #s > w then return s:sub(1, w)
elseif #s == w then return s
else return s..string.rep(" ", w - #s)
end
end
string.rightof = function (s, w)
if #s <= w then return ""
else return s:sub(w+1)
end
end
string.replace = function (s, x, r, w)
w = w or #r
r = r:leftof(w)
return s:leftof(x)..r..s:rightof(x + #r)
end
-- «anggurl-and-angg_url» (to ".anggurl-and-angg_url")
-- Obsolete! TODO: replace this by a class that shortens
-- local filenames correctly.
string.revgsub = function (str, ...)
return str:reverse():gsub(...):reverse()
end
underlinify = function (s)
return s:sub(1, 1)..string.rep("_", #s-2)..s:sub(#s)
end
intro_url = function (stem)
return anggurl("eev-intros/find-"..stem.."-intro.html")
end
angg_url = function (fname) return "../"..fname end
intro_url = function (stem) return string.upper(stem) end
isdir = function (fname) return fname=="" or fname:sub(-1)=="/" end
suffixing = function (fname, suffix, anchor)
return (isdir(fname) and fname or fname..suffix) ..
(anchor and "#"..anchor or "")
end
meta_find_angg = function (anggdir, suffix, intro_stem)
return function (fname, tag)
local target = fname and
angg_url(anggdir)..suffixing(fname, suffix or ".html")
if target and tag then target = target.."#"..tag end
return target, intro_url(intro_stem or "code-c-d")
end
end
-- «EevIntro» (to ".EevIntro")
-- «youtube_make_url» (to ".youtube_make_url")
-- «youtube_split» (to ".youtube_split")
-- «getsexp» (to ".getsexp")
-- «ELispHF» (to ".ELispHF")
-- «SexpSkel» (to ".SexpSkel")
-- «ELispH» (to ".ELispH")
-- «Sexp» (to ".Sexp")
-- «to_youtube_hash» (to ".to_youtube_hash")
-- «url_split» (to ".url_split")
-- «Blogme» (to ".Blogme")
-- «code_video» (to ".code_video")
-- «ELispInfo» (to ".ELispInfo")
-- «getsexpskel» (to ".getsexpskel")
-- «SexpLine» (to ".SexpLine")
-- Moved to:
-- (find-blogme3 "cruft-jan2024.lua" "EevIntro")
-- (find-blogme3 "cruft-jan2024.lua" "youtube_make_url")
-- (find-blogme3 "cruft-jan2024.lua" "youtube_split")
-- (find-blogme3 "cruft-jan2024.lua" "getsexp")
-- (find-blogme3 "cruft-jan2024.lua" "ELispHF")
-- (find-blogme3 "cruft-jan2024.lua" "SexpSkel")
-- (find-blogme3 "cruft-jan2024.lua" "ELispH")
-- (find-blogme3 "cruft-jan2024.lua" "Sexp")
-- (find-blogme3 "cruft-jan2024.lua" "to_youtube_hash")
-- (find-blogme3 "cruft-jan2024.lua" "url_split")
-- (find-blogme3 "cruft-jan2024.lua" "Blogme")
-- (find-blogme3 "cruft-jan2024.lua" "code_video")
-- (find-blogme3 "cruft-jan2024.lua" "ELispInfo")
-- (find-blogme3 "cruft-jan2024.lua" "getsexpskel")
-- (find-blogme3 "cruft-jan2024.lua" "SexpLine")
-- «fsize» (to ".fsize")
-- (find-es "lua5" "lua-posix-wheezy")
-- require "posix"
readlink = function (fname)
while posix.readlink(fname) do fname = posix.readlink(fname) end
return fname
end
fsize = function (fname)
return posix.stat(fname).size
end
roundblock = function (size, blocksize)
local m = math.fmod(size, blocksize)
if m ~= 0 then size = size - m + blocksize end
return size
end
fsizeb = function (fname, blocksize)
return roundblock(fsize(readlink(fname)), blocksize or 8192)
end
ydb_sort = function (bigstr)
local lines = splitlines(bigstr)
local ord = {}
local lt = function (li1, li2) return ord[li1] < ord[li2] end
for _,li in ipairs(lines) do
ord[li] = li:gsub("http://www.youtube.com/watch[^ ]+", "")
end
return table.concat(sorted(lines, lt), "\n")
end
ydb_sort1 = function () print(ydb_sort(io.read("*a"))) end
-- «loaddednat6» (to ".loaddednat6")
-- loaddednat6 = function ()
-- -- dednat6dir = "/home/edrx/dednat6/" -- (find-dn6 "")
-- dednat6dir = os.getenv"HOME".."/dednat6/" -- (find-dn6 "")
-- dofile(dednat6dir.."dednat6.lua") -- (find-dn6 "dednat6.lua")
-- end
loaddednat6 = function (dir)
dednat6dir = ee_expand(dir or "~/LATEX/dednat6/") -- (find-dn6 "")
dofile(dednat6dir.."dednat6.lua") -- (find-dn6 "dednat6.lua")
end
-- «loadelpeg1» (to ".loadelpeg1")
-- (find-angg "LUA/ELpeg1.lua")
loadelpeg1 = function ()
-- Path.prependtopath "~/LUA/?.lua"
Path.addLUAtopath()
require "ELpeg1"
end
-- «loaddednatrequire» (to ".loaddednatrequire")
-- Uses: (to "DednatRequire")
-- Used by: (find-angg "LUA/Show2.lua" "defs_repl")
loaddednatrequire = function ()
-- oldrequire = oldrequire or require
-- dednatrequire = DednatRequire.newrequire
-- require = dednatrequire
require = DednatRequire.newrequire
end
-- «loadshow2» (to ".loadshow2")
-- (find-angg "LUA/Show2.lua")
loadshow2 = function ()
-- Path.prependtopath "~/LUA/?.lua"
Path.addLUAtopath()
require "Show2"
show0 = show0 or function () return tostring(outertexbody) end
show = show or function () return Show.try(tostring(outertexbody)) end
end
-- «loadtikz2» (to ".loadtikz2")
-- (find-angg "LUA/Tikz2.lua")
loadtikz2 = function ()
-- Path.prependtopath "~/LUA/?.lua"
Path.addLUAtopath()
require "Tikz2"
end
-- «loadfbcache2» (to ".loadfbcache2")
loadfbcache2 = function ()
chdir "~/fbcache/" -- (find-fbcache "")
dofile "fbcache2.lua" -- (find-fbcache "fbcache2.lua")
end
-- «loadluarocks» (to ".loadluarocks")
-- (find-es "lua5" "luarocks.loader")
-- (find-es "lua5" "luarocks-interactively")
-- (find-fline "/usr/bin/luarocks")
loadluarocks = function ()
package.path = "/usr/share/lua/5.1//?.lua;/usr/share/lua/5.1//?/init.lua;"..package.path
command_line = require("luarocks.command_line")
program_name = "luarocks"
program_description = "LuaRocks main command-line interface"
commands = {}
commands.help = require("luarocks.help")
commands.pack = require("luarocks.pack")
commands.unpack = require("luarocks.unpack")
commands.build = require("luarocks.build")
commands.install = require("luarocks.install")
commands.search = require("luarocks.search")
commands.list = require("luarocks.list")
commands.remove = require("luarocks.remove")
commands.make = require("luarocks.make")
commands.download = require("luarocks.download")
commands.path = require("luarocks.path")
commands.show = require("luarocks.show")
commands.new_version = require("luarocks.new_version")
end
-- «capitalize» (to ".capitalize")
-- Capitalize Brazilian names.
capitalize = function (text, smallwords)
smallwords = smallwords or Set.fromarray(split("de da do das dos e"))
local capitalize1 = function (word)
word = word:lower()
if smallwords:has(word) then return word end
return word:sub(1,1):upper()..word:sub(2):lower()
end
return (text:gsub("%a+", capitalize1))
end
-- «getinscritos» (to ".getinscritos")
-- (find-angg ".emacs" "getinscritos")
getinscrito = function (li)
local mat,cpf,nome,email = li:match("^%s*(%d+)%s+(%d+)%s+(.-)%s%s+(%S+)")
if not mat then return end
local Nome = capitalize(nome)
local dest = format("%-60s <%s>,", '"'..Nome..'"', email)
local inscrito = {li=li, mat=mat, cpf=cpf, nome=nome, email=email,
Nome=Nome, dest=dest}
return inscrito
end
getinscritos = function ()
for li in io.lines() do
if getinscrito(li) then print(getinscrito(li).dest) end
end
end
-- «findxxxpdf_parse» (to ".findxxxpdf_parse")
-- (find-angg "LUA/book-index.lua")
-- (find-angg ".emacs" "book-index")
--
findxxxpdf_parse = function (li, stem, adj)
li = untabify(li)
li = li:gsub(" [ .]* ", " ")
li = li:match("^ *(.-) *$")
local str,p = li:match("^(.*) ([0-9]+)$")
if str then
if stem and adj then
printf(";; (find-%spage (+ %d %d) \"%s\")\n", stem, adj, p, str)
elseif str and (not adj) then
printf(";; (find-%spage %d \"%s\")\n", stem, p, str)
end
end
return str,p
end
findxxxpdf_parse_file = function (fname, stem, adj)
for _,li in ipairs(splitlines(ee_readfile(fname))) do
findxxxpdf_parse(li, stem, adj)
end
end
-- «repltexthis» (to ".repltexthis")
-- This function has been put here temporarily.
-- It will change.
repltexthis = function (mathmodetexstuff)
ee_writefile("~/LATEX/o.tex", "$"..mathmodetexstuff.."$")
print("Wrote ~/LATEX/o.tex.")
print('See: (find-LATEX "2021repl-pict.tex")')
end
-- «load_sqlite» (to ".load_sqlite")
-- (find-angg "LUA/SQLite1.lua" "load_sqlite")
load_sqlite = function ()
Path.addLUAtopath()
print('See: (find-angg "LUA/SQLite1.lua")')
print(' (find-es "sqlite" "lua-wiki"")')
require "SQLite1"
end
unixnewlines = function (bigstr)
return (bigstr:gsub("\r\n", "\n"):gsub("\r", "\n"))
end
-- «Path.addLUAtopath» (to ".Path.addLUAtopath")
-- Notes about redefining Path.addLUAtopath:
-- 1) its default is here:
-- (to "Path")
-- (to "Path" "addLUAtopath =")
-- 2) in my machine ~/LUA/ is not in the Lua path
-- 3) most of the Lua libraries that I wrote are in ~/LUA/
-- 4) _usually_ things like 'require "Tos2"' only work after Path.addLUAtopath()
-- 5) _usually_ running Path.addLUAtopath() adds ~/LUA/ to the Lua path
-- 6) in some tests I need to make Path.addLUAtopath() a no-op
-- 7) in show2-elpeg1 Path.addLUAtopath() needs to be a no-op
-- 8) in show2-elpeg1 the redefinition below should be uncommented
--Path.addLUAtopath = function () end
-- Local Variables:
-- coding: utf-8-unix
-- End: