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-rw-r--r--lualibs-file.lua391
-rw-r--r--lualibs-io.lua62
-rw-r--r--lualibs-math.lua12
-rw-r--r--lualibs-os.lua75
-rw-r--r--lualibs-table.lua692
-rw-r--r--lualibs-url.lua2
6 files changed, 823 insertions, 411 deletions
diff --git a/lualibs-file.lua b/lualibs-file.lua
index 2bfc070..7ab9fbc 100644
--- a/lualibs-file.lua
+++ b/lualibs-file.lua
@@ -8,47 +8,101 @@ if not modules then modules = { } end modules ['l-file'] = {
-- needs a cleanup
-file = file or { }
+file = file or { }
+local file = file
-local concat = table.concat
-local find, gmatch, match, gsub, sub, char = string.find, string.gmatch, string.match, string.gsub, string.sub, string.char
+local insert, concat = table.insert, table.concat
+local find, gmatch, match, gsub, sub, char, lower = string.find, string.gmatch, string.match, string.gsub, string.sub, string.char, string.lower
local lpegmatch = lpeg.match
-function file.removesuffix(filename)
- return (gsub(filename,"%.[%a%d]+$",""))
+local P, R, S, C, Cs, Cp, Cc = lpeg.P, lpeg.R, lpeg.S, lpeg.C, lpeg.Cs, lpeg.Cp, lpeg.Cc
+
+local function dirname(name,default)
+ return match(name,"^(.+)[/\\].-$") or (default or "")
end
-function file.addsuffix(filename, suffix)
- if not suffix or suffix == "" then
- return filename
- elseif not find(filename,"%.[%a%d]+$") then
- return filename .. "." .. suffix
- else
- return filename
- end
+local function basename(name)
+ return match(name,"^.+[/\\](.-)$") or name
end
-function file.replacesuffix(filename, suffix)
- return (gsub(filename,"%.[%a%d]+$","")) .. "." .. suffix
+-- local function nameonly(name)
+-- return (gsub(match(name,"^.+[/\\](.-)$") or name,"%..*$",""))
+-- end
+
+local function nameonly(name)
+ return (gsub(match(name,"^.+[/\\](.-)$") or name,"%.[%a%d]+$",""))
end
-function file.dirname(name,default)
- return match(name,"^(.+)[/\\].-$") or (default or "")
+local function suffixonly(name,default)
+ return match(name,"^.+%.([^/\\]-)$") or default or ""
end
-function file.basename(name)
- return match(name,"^.+[/\\](.-)$") or name
+local function splitname(name)
+ local n, s = match(name,"^(.+)%.([^/\\]-)$")
+ return n or name, s or ""
end
-function file.nameonly(name)
- return (gsub(match(name,"^.+[/\\](.-)$") or name,"%..*$",""))
+file.basename = basename
+
+file.pathpart = dirname
+file.dirname = dirname
+
+file.nameonly = nameonly
+
+file.suffixonly = suffixonly
+file.extname = suffixonly -- obsolete
+file.suffix = suffixonly
+
+function file.removesuffix(filename)
+ return (gsub(filename,"%.[%a%d]+$",""))
end
-function file.extname(name,default)
- return match(name,"^.+%.([^/\\]-)$") or default or ""
+function file.addsuffix(filename, suffix, criterium)
+ if not suffix or suffix == "" then
+ return filename
+ elseif criterium == true then
+ return filename .. "." .. suffix
+ elseif not criterium then
+ local n, s = splitname(filename)
+ if not s or s == "" then
+ return filename .. "." .. suffix
+ else
+ return filename
+ end
+ else
+ local n, s = splitname(filename)
+ if s and s ~= "" then
+ local t = type(criterium)
+ if t == "table" then
+ -- keep if in criterium
+ for i=1,#criterium do
+ if s == criterium[i] then
+ return filename
+ end
+ end
+ elseif t == "string" then
+ -- keep if criterium
+ if s == criterium then
+ return filename
+ end
+ end
+ end
+ return n .. "." .. suffix
+ end
end
-file.suffix = file.extname
+--~ print("1 " .. file.addsuffix("name","new") .. " -> name.new")
+--~ print("2 " .. file.addsuffix("name.old","new") .. " -> name.old")
+--~ print("3 " .. file.addsuffix("name.old","new",true) .. " -> name.old.new")
+--~ print("4 " .. file.addsuffix("name.old","new","new") .. " -> name.new")
+--~ print("5 " .. file.addsuffix("name.old","new","old") .. " -> name.old")
+--~ print("6 " .. file.addsuffix("name.old","new","foo") .. " -> name.new")
+--~ print("7 " .. file.addsuffix("name.old","new",{"foo","bar"}) .. " -> name.new")
+--~ print("8 " .. file.addsuffix("name.old","new",{"old","bar"}) .. " -> name.old")
+
+function file.replacesuffix(filename, suffix)
+ return (gsub(filename,"%.[%a%d]+$","")) .. "." .. suffix
+end
--~ function file.join(...)
--~ local pth = concat({...},"/")
@@ -67,10 +121,10 @@ file.suffix = file.extname
local trick_1 = char(1)
local trick_2 = "^" .. trick_1 .. "/+"
-function file.join(...)
+function file.join(...) -- rather dirty
local lst = { ... }
local a, b = lst[1], lst[2]
- if a == "" then
+ if not a or a == "" then -- not a added
lst[1] = trick_1
elseif b and find(a,"^/+$") and find(b,"^/") then
lst[1] = ""
@@ -100,74 +154,165 @@ end
--~ print(file.join("http:///a","/y"))
--~ print(file.join("//nas-1","/y"))
-function file.iswritable(name)
- local a = lfs.attributes(name) or lfs.attributes(file.dirname(name,"."))
- return a and sub(a.permissions,2,2) == "w"
+-- We should be able to use:
+--
+-- function file.is_writable(name)
+-- local a = attributes(name) or attributes(dirname(name,"."))
+-- return a and sub(a.permissions,2,2) == "w"
+-- end
+--
+-- But after some testing Taco and I came up with:
+
+function file.is_writable(name)
+ if lfs.isdir(name) then
+ name = name .. "/m_t_x_t_e_s_t.tmp"
+ local f = io.open(name,"wb")
+ if f then
+ f:close()
+ os.remove(name)
+ return true
+ end
+ elseif lfs.isfile(name) then
+ local f = io.open(name,"ab")
+ if f then
+ f:close()
+ return true
+ end
+ else
+ local f = io.open(name,"ab")
+ if f then
+ f:close()
+ os.remove(name)
+ return true
+ end
+ end
+ return false
end
-function file.isreadable(name)
- local a = lfs.attributes(name)
+function file.is_readable(name)
+ local a = attributes(name)
return a and sub(a.permissions,1,1) == "r"
end
-file.is_readable = file.isreadable
-file.is_writable = file.iswritable
+file.isreadable = file.is_readable -- depricated
+file.iswritable = file.is_writable -- depricated
--- todo: lpeg
+function file.size(name)
+ local a = attributes(name)
+ return a and a.size or 0
+end
---~ function file.split_path(str)
---~ local t = { }
---~ str = gsub(str,"\\", "/")
---~ str = gsub(str,"(%a):([;/])", "%1\001%2")
---~ for name in gmatch(str,"([^;:]+)") do
---~ if name ~= "" then
---~ t[#t+1] = gsub(name,"\001",":")
---~ end
---~ end
---~ return t
---~ end
+-- todo: lpeg \\ / .. does not save much
local checkedsplit = string.checkedsplit
-function file.split_path(str,separator)
+function file.splitpath(str,separator) -- string
str = gsub(str,"\\","/")
return checkedsplit(str,separator or io.pathseparator)
end
-function file.join_path(tab)
- return concat(tab,io.pathseparator) -- can have trailing //
+function file.joinpath(tab,separator) -- table
+ return concat(tab,separator or io.pathseparator) -- can have trailing //
end
-- we can hash them weakly
-function file.collapse_path(str)
+--~ function file.collapsepath(str) -- fails on b.c/..
+--~ str = gsub(str,"\\","/")
+--~ if find(str,"/") then
+--~ str = gsub(str,"^%./",(gsub(getcurrentdir(),"\\","/")) .. "/") -- ./xx in qualified
+--~ str = gsub(str,"/%./","/")
+--~ local n, m = 1, 1
+--~ while n > 0 or m > 0 do
+--~ str, n = gsub(str,"[^/%.]+/%.%.$","")
+--~ str, m = gsub(str,"[^/%.]+/%.%./","")
+--~ end
+--~ str = gsub(str,"([^/])/$","%1")
+--~ -- str = gsub(str,"^%./","") -- ./xx in qualified
+--~ str = gsub(str,"/%.$","")
+--~ end
+--~ if str == "" then str = "." end
+--~ return str
+--~ end
+--~
+--~ The previous one fails on "a.b/c" so Taco came up with a split based
+--~ variant. After some skyping we got it sort of compatible with the old
+--~ one. After that the anchoring to currentdir was added in a better way.
+--~ Of course there are some optimizations too. Finally we had to deal with
+--~ windows drive prefixes and things like sys://.
+
+function file.collapsepath(str,anchor)
+ if anchor and not find(str,"^/") and not find(str,"^%a:") then
+ str = getcurrentdir() .. "/" .. str
+ end
+ if str == "" or str =="." then
+ return "."
+ elseif find(str,"^%.%.") then
+ str = gsub(str,"\\","/")
+ return str
+ elseif not find(str,"%.") then
+ str = gsub(str,"\\","/")
+ return str
+ end
str = gsub(str,"\\","/")
- if find(str,"/") then
- str = gsub(str,"^%./",(gsub(lfs.currentdir(),"\\","/")) .. "/") -- ./xx in qualified
- str = gsub(str,"/%./","/")
- local n, m = 1, 1
- while n > 0 or m > 0 do
- str, n = gsub(str,"[^/%.]+/%.%.$","")
- str, m = gsub(str,"[^/%.]+/%.%./","")
+ local starter, rest = match(str,"^(%a+:/*)(.-)$")
+ if starter then
+ str = rest
+ end
+ local oldelements = checkedsplit(str,"/")
+ local newelements = { }
+ local i = #oldelements
+ while i > 0 do
+ local element = oldelements[i]
+ if element == '.' then
+ -- do nothing
+ elseif element == '..' then
+ local n = i - 1
+ while n > 0 do
+ local element = oldelements[n]
+ if element ~= '..' and element ~= '.' then
+ oldelements[n] = '.'
+ break
+ else
+ n = n - 1
+ end
+ end
+ if n < 1 then
+ insert(newelements,1,'..')
+ end
+ elseif element ~= "" then
+ insert(newelements,1,element)
end
- str = gsub(str,"([^/])/$","%1")
- -- str = gsub(str,"^%./","") -- ./xx in qualified
- str = gsub(str,"/%.$","")
+ i = i - 1
+ end
+ if #newelements == 0 then
+ return starter or "."
+ elseif starter then
+ return starter .. concat(newelements, '/')
+ elseif find(str,"^/") then
+ return "/" .. concat(newelements,'/')
+ else
+ return concat(newelements, '/')
end
- if str == "" then str = "." end
- return str
end
---~ print(file.collapse_path("/a"))
---~ print(file.collapse_path("a/./b/.."))
---~ print(file.collapse_path("a/aa/../b/bb"))
---~ print(file.collapse_path("a/../.."))
---~ print(file.collapse_path("a/.././././b/.."))
---~ print(file.collapse_path("a/./././b/.."))
---~ print(file.collapse_path("a/b/c/../.."))
-
-function file.robustname(str)
- return (gsub(str,"[^%a%d%/%-%.\\]+","-"))
+--~ local function test(str)
+--~ print(string.format("%-20s %-15s %-15s",str,file.collapsepath(str),file.collapsepath(str,true)))
+--~ end
+--~ test("a/b.c/d") test("b.c/d") test("b.c/..")
+--~ test("/") test("c:/..") test("sys://..")
+--~ test("") test("./") test(".") test("..") test("./..") test("../..")
+--~ test("a") test("./a") test("/a") test("a/../..")
+--~ test("a/./b/..") test("a/aa/../b/bb") test("a/.././././b/..") test("a/./././b/..")
+--~ test("a/b/c/../..") test("./a/b/c/../..") test("a/b/c/../..")
+
+function file.robustname(str,strict)
+ str = gsub(str,"[^%a%d%/%-%.\\]+","-")
+ if strict then
+ return lower(gsub(str,"^%-*(.-)%-*$","%1"))
+ else
+ return str
+ end
end
file.readdata = io.loaddata
@@ -179,31 +324,31 @@ end
-- lpeg variants, slightly faster, not always
---~ local period = lpeg.P(".")
---~ local slashes = lpeg.S("\\/")
+--~ local period = P(".")
+--~ local slashes = S("\\/")
--~ local noperiod = 1-period
--~ local noslashes = 1-slashes
--~ local name = noperiod^1
---~ local pattern = (noslashes^0 * slashes)^0 * (noperiod^1 * period)^1 * lpeg.C(noperiod^1) * -1
+--~ local pattern = (noslashes^0 * slashes)^0 * (noperiod^1 * period)^1 * C(noperiod^1) * -1
---~ function file.extname(name)
+--~ function file.suffixonly(name)
--~ return lpegmatch(pattern,name) or ""
--~ end
---~ local pattern = lpeg.Cs(((period * noperiod^1 * -1)/"" + 1)^1)
+--~ local pattern = Cs(((period * noperiod^1 * -1)/"" + 1)^1)
--~ function file.removesuffix(name)
--~ return lpegmatch(pattern,name)
--~ end
---~ local pattern = (noslashes^0 * slashes)^1 * lpeg.C(noslashes^1) * -1
+--~ local pattern = (noslashes^0 * slashes)^1 * C(noslashes^1) * -1
--~ function file.basename(name)
--~ return lpegmatch(pattern,name) or name
--~ end
---~ local pattern = (noslashes^0 * slashes)^1 * lpeg.Cp() * noslashes^1 * -1
+--~ local pattern = (noslashes^0 * slashes)^1 * Cp() * noslashes^1 * -1
--~ function file.dirname(name)
--~ local p = lpegmatch(pattern,name)
@@ -214,7 +359,7 @@ end
--~ end
--~ end
---~ local pattern = (noslashes^0 * slashes)^0 * (noperiod^1 * period)^1 * lpeg.Cp() * noperiod^1 * -1
+--~ local pattern = (noslashes^0 * slashes)^0 * (noperiod^1 * period)^1 * Cp() * noperiod^1 * -1
--~ function file.addsuffix(name, suffix)
--~ local p = lpegmatch(pattern,name)
@@ -225,7 +370,7 @@ end
--~ end
--~ end
---~ local pattern = (noslashes^0 * slashes)^0 * (noperiod^1 * period)^1 * lpeg.Cp() * noperiod^1 * -1
+--~ local pattern = (noslashes^0 * slashes)^0 * (noperiod^1 * period)^1 * Cp() * noperiod^1 * -1
--~ function file.replacesuffix(name,suffix)
--~ local p = lpegmatch(pattern,name)
@@ -236,7 +381,7 @@ end
--~ end
--~ end
---~ local pattern = (noslashes^0 * slashes)^0 * lpeg.Cp() * ((noperiod^1 * period)^1 * lpeg.Cp() + lpeg.P(true)) * noperiod^1 * -1
+--~ local pattern = (noslashes^0 * slashes)^0 * Cp() * ((noperiod^1 * period)^1 * Cp() + P(true)) * noperiod^1 * -1
--~ function file.nameonly(name)
--~ local a, b = lpegmatch(pattern,name)
@@ -249,7 +394,7 @@ end
--~ end
--~ end
---~ local test = file.extname
+--~ local test = file.suffixonly
--~ local test = file.basename
--~ local test = file.dirname
--~ local test = file.addsuffix
@@ -268,11 +413,14 @@ end
-- also rewrite previous
-local letter = lpeg.R("az","AZ") + lpeg.S("_-+")
-local separator = lpeg.P("://")
+local letter = R("az","AZ") + S("_-+")
+local separator = P("://")
+
+local qualified = P(".")^0 * P("/") + letter*P(":") + letter^1*separator + letter^1 * P("/")
+local rootbased = P("/") + letter*P(":")
-local qualified = lpeg.P(".")^0 * lpeg.P("/") + letter*lpeg.P(":") + letter^1*separator + letter^1 * lpeg.P("/")
-local rootbased = lpeg.P("/") + letter*lpeg.P(":")
+lpeg.patterns.qualified = qualified
+lpeg.patterns.rootbased = rootbased
-- ./name ../name /name c: :// name/name
@@ -284,19 +432,61 @@ function file.is_rootbased_path(filename)
return lpegmatch(rootbased,filename) ~= nil
end
-local slash = lpeg.S("\\/")
-local period = lpeg.P(".")
-local drive = lpeg.C(lpeg.R("az","AZ")) * lpeg.P(":")
-local path = lpeg.C(((1-slash)^0 * slash)^0)
-local suffix = period * lpeg.C(lpeg.P(1-period)^0 * lpeg.P(-1))
-local base = lpeg.C((1-suffix)^0)
+-- actually these are schemes
+
+local slash = S("\\/")
+local period = P(".")
+local drive = C(R("az","AZ")) * P(":")
+local path = C(((1-slash)^0 * slash)^0)
+local suffix = period * C(P(1-period)^0 * P(-1))
+local base = C((1-suffix)^0)
+local rest = C(P(1)^0)
+
+drive = drive + Cc("")
+path = path + Cc("")
+base = base + Cc("")
+suffix = suffix + Cc("")
+
+local pattern_a = drive * path * base * suffix
+local pattern_b = path * base * suffix
+local pattern_c = C(drive * path) * C(base * suffix) -- trick: two extra captures
+local pattern_d = path * rest
+
+function file.splitname(str,splitdrive)
+ if splitdrive then
+ return lpegmatch(pattern_a,str) -- returns drive, path, base, suffix
+ else
+ return lpegmatch(pattern_b,str) -- returns path, base, suffix
+ end
+end
-local pattern = (drive + lpeg.Cc("")) * (path + lpeg.Cc("")) * (base + lpeg.Cc("")) * (suffix + lpeg.Cc(""))
+function file.splitbase(str)
+ return lpegmatch(pattern_d,str) -- returns path, base+suffix
+end
-function file.splitname(str) -- returns drive, path, base, suffix
- return lpegmatch(pattern,str)
+function file.nametotable(str,splitdrive) -- returns table
+ local path, drive, subpath, name, base, suffix = lpegmatch(pattern_c,str)
+ if splitdrive then
+ return {
+ path = path,
+ drive = drive,
+ subpath = subpath,
+ name = name,
+ base = base,
+ suffix = suffix,
+ }
+ else
+ return {
+ path = path,
+ name = name,
+ base = base,
+ suffix = suffix,
+ }
+ end
end
+-- print(file.splitbase("a/b/c.txt"))
+
-- function test(t) for k, v in next, t do print(v, "=>", file.splitname(v)) end end
--
-- test { "c:", "c:/aa", "c:/aa/bb", "c:/aa/bb/cc", "c:/aa/bb/cc.dd", "c:/aa/bb/cc.dd.ee" }
@@ -307,8 +497,15 @@ end
--~ -- todo:
--~
--~ if os.type == "windows" then
---~ local currentdir = lfs.currentdir
---~ function lfs.currentdir()
+--~ local currentdir = getcurrentdir
+--~ function getcurrentdir()
--~ return (gsub(currentdir(),"\\","/"))
--~ end
--~ end
+
+-- for myself:
+
+function file.strip(name,dir)
+ local b, a = match(name,"^(.-)" .. dir .. "(.*)$")
+ return a ~= "" and a or name
+end
diff --git a/lualibs-io.lua b/lualibs-io.lua
index a9269ab..657b755 100644
--- a/lualibs-io.lua
+++ b/lualibs-io.lua
@@ -234,3 +234,65 @@ function io.ask(question,default,options)
end
end
end
+
+local function readnumber(f,n,m)
+ if m then
+ f:seek("set",n)
+ n = m
+ end
+ if n == 1 then
+ return byte(f:read(1))
+ elseif n == 2 then
+ local a, b = byte(f:read(2),1,2)
+ return 256 * a + b
+ elseif n == 3 then
+ local a, b, c = byte(f:read(3),1,3)
+ return 256*256 * a + 256 * b + c
+ elseif n == 4 then
+ local a, b, c, d = byte(f:read(4),1,4)
+ return 256*256*256 * a + 256*256 * b + 256 * c + d
+ elseif n == 8 then
+ local a, b = readnumber(f,4), readnumber(f,4)
+ return 256 * a + b
+ elseif n == 12 then
+ local a, b, c = readnumber(f,4), readnumber(f,4), readnumber(f,4)
+ return 256*256 * a + 256 * b + c
+ elseif n == -2 then
+ local b, a = byte(f:read(2),1,2)
+ return 256*a + b
+ elseif n == -3 then
+ local c, b, a = byte(f:read(3),1,3)
+ return 256*256 * a + 256 * b + c
+ elseif n == -4 then
+ local d, c, b, a = byte(f:read(4),1,4)
+ return 256*256*256 * a + 256*256 * b + 256*c + d
+ elseif n == -8 then
+ local h, g, f, e, d, c, b, a = byte(f:read(8),1,8)
+ return 256*256*256*256*256*256*256 * a +
+ 256*256*256*256*256*256 * b +
+ 256*256*256*256*256 * c +
+ 256*256*256*256 * d +
+ 256*256*256 * e +
+ 256*256 * f +
+ 256 * g +
+ h
+ else
+ return 0
+ end
+end
+
+io.readnumber = readnumber
+
+function io.readstring(f,n,m)
+ if m then
+ f:seek("set",n)
+ n = m
+ end
+ local str = gsub(f:read(n),"%z","")
+ return str
+end
+
+--
+
+if not io.i_limiter then function io.i_limiter() end end -- dummy so we can test safely
+if not io.o_limiter then function io.o_limiter() end end -- dummy so we can test safely
diff --git a/lualibs-math.lua b/lualibs-math.lua
index 4669a51..43f60b5 100644
--- a/lualibs-math.lua
+++ b/lualibs-math.lua
@@ -9,21 +9,15 @@ if not modules then modules = { } end modules ['l-math'] = {
local floor, sin, cos, tan = math.floor, math.sin, math.cos, math.tan
if not math.round then
- function math.round(x)
- return floor(x + 0.5)
- end
+ function math.round(x) return floor(x + 0.5) end
end
if not math.div then
- function math.div(n,m)
- return floor(n/m)
- end
+ function math.div(n,m) return floor(n/m) end
end
if not math.mod then
- function math.mod(n,m)
- return n % m
- end
+ function math.mod(n,m) return n % m end
end
local pipi = 2*math.pi/360
diff --git a/lualibs-os.lua b/lualibs-os.lua
index 95d007d..799f449 100644
--- a/lualibs-os.lua
+++ b/lualibs-os.lua
@@ -115,8 +115,8 @@ if not os.__getenv__ then
end
end
-local find, format, gsub = string.find, string.format, string.gsub
-local random, ceil = math.random, math.ceil
+
+-- end of environment hack
local execute, spawn, exec, iopopen, ioflush = os.execute, os.spawn or os.execute, os.exec or os.execute, io.popen, io.flush
@@ -381,3 +381,74 @@ function os.timezone(delta)
return 1
end
end
+
+local timeformat = format("%%s%s",os.timezone(true))
+local dateformat = "!%Y-%m-%d %H:%M:%S"
+
+function os.fulltime(t,default)
+ t = tonumber(t) or 0
+ if t > 0 then
+ -- valid time
+ elseif default then
+ return default
+ else
+ t = nil
+ end
+ return format(timeformat,date(dateformat,t))
+end
+
+local dateformat = "%Y-%m-%d %H:%M:%S"
+
+function os.localtime(t,default)
+ t = tonumber(t) or 0
+ if t > 0 then
+ -- valid time
+ elseif default then
+ return default
+ else
+ t = nil
+ end
+ return date(dateformat,t)
+end
+
+function os.converttime(t,default)
+ local t = tonumber(t)
+ if t and t > 0 then
+ return date(dateformat,t)
+ else
+ return default or "-"
+ end
+end
+
+local memory = { }
+
+local function which(filename)
+ local fullname = memory[filename]
+ if fullname == nil then
+ local suffix = file.suffix(filename)
+ local suffixes = suffix == "" and os.binsuffixes or { suffix }
+ for directory in gmatch(os.getenv("PATH"),"[^" .. io.pathseparator .."]+") do
+ local df = file.join(directory,filename)
+ for i=1,#suffixes do
+ local dfs = file.addsuffix(df,suffixes[i])
+ if io.exists(dfs) then
+ fullname = dfs
+ break
+ end
+ end
+ end
+ if not fullname then
+ fullname = false
+ end
+ memory[filename] = fullname
+ end
+ return fullname
+end
+
+os.which = which
+os.where = which
+
+-- print(os.which("inkscape.exe"))
+-- print(os.which("inkscape"))
+-- print(os.which("gs.exe"))
+-- print(os.which("ps2pdf"))
diff --git a/lualibs-table.lua b/lualibs-table.lua
index ee395d0..80f28c2 100644
--- a/lualibs-table.lua
+++ b/lualibs-table.lua
@@ -6,17 +6,19 @@ if not modules then modules = { } end modules ['l-table'] = {
license = "see context related readme files"
}
-table.join = table.concat
-
+local type, next, tostring, tonumber, ipairs = type, next, tostring, tonumber, ipairs
+local table, string = table, string
local concat, sort, insert, remove = table.concat, table.sort, table.insert, table.remove
local format, find, gsub, lower, dump, match = string.format, string.find, string.gsub, string.lower, string.dump, string.match
local getmetatable, setmetatable = getmetatable, setmetatable
-local type, next, tostring, tonumber, ipairs = type, next, tostring, tonumber, ipairs
+local getinfo = debug.getinfo
-- Starting with version 5.2 Lua no longer provide ipairs, which makes
-- sense. As we already used the for loop and # in most places the
-- impact on ConTeXt was not that large; the remaining ipairs already
--- have been replaced. In a similar fashio we also hardly used pairs.
+-- have been replaced. In a similar fashion we also hardly used pairs.
+--
+-- Hm, actually ipairs was retained, but we no longer use it anyway.
--
-- Just in case, we provide the fallbacks as discussed in Programming
-- in Lua (http://www.lua.org/pil/7.3.html):
@@ -63,97 +65,134 @@ end
-- extra functions, some might go (when not used)
function table.strip(tab)
- local lst = { }
+ local lst, l = { }, 0
for i=1,#tab do
local s = gsub(tab[i],"^%s*(.-)%s*$","%1")
if s == "" then
-- skip this one
else
- lst[#lst+1] = s
+ l = l + 1
+ lst[l] = s
end
end
return lst
end
function table.keys(t)
- local k = { }
- for key, _ in next, t do
- k[#k+1] = key
+ if t then
+ local keys, k = { }, 0
+ for key, _ in next, t do
+ k = k + 1
+ keys[k] = key
+ end
+ return keys
+ else
+ return { }
end
- return k
end
local function compare(a,b)
- return (tostring(a) < tostring(b))
+ local ta, tb = type(a), type(b) -- needed, else 11 < 2
+ if ta == tb then
+ return a < b
+ else
+ return tostring(a) < tostring(b)
+ end
end
local function sortedkeys(tab)
- local srt, kind = { }, 0 -- 0=unknown 1=string, 2=number 3=mixed
- for key,_ in next, tab do
- srt[#srt+1] = key
- if kind == 3 then
- -- no further check
- else
- local tkey = type(key)
- if tkey == "string" then
- -- if kind == 2 then kind = 3 else kind = 1 end
- kind = (kind == 2 and 3) or 1
- elseif tkey == "number" then
- -- if kind == 1 then kind = 3 else kind = 2 end
- kind = (kind == 1 and 3) or 2
+ if tab then
+ local srt, category, s = { }, 0, 0 -- 0=unknown 1=string, 2=number 3=mixed
+ for key,_ in next, tab do
+ s = s + 1
+ srt[s] = key
+ if category == 3 then
+ -- no further check
else
- kind = 3
+ local tkey = type(key)
+ if tkey == "string" then
+ category = (category == 2 and 3) or 1
+ elseif tkey == "number" then
+ category = (category == 1 and 3) or 2
+ else
+ category = 3
+ end
end
end
- end
- if kind == 0 or kind == 3 then
- sort(srt,compare)
+ if category == 0 or category == 3 then
+ sort(srt,compare)
+ else
+ sort(srt)
+ end
+ return srt
else
- sort(srt)
+ return { }
end
- return srt
end
local function sortedhashkeys(tab) -- fast one
- local srt = { }
- for key,_ in next, tab do
- srt[#srt+1] = key
+ if tab then
+ local srt, s = { }, 0
+ for key,_ in next, tab do
+ if key then
+ s= s + 1
+ srt[s] = key
+ end
+ end
+ sort(srt)
+ return srt
+ else
+ return { }
end
- sort(srt)
- return srt
end
table.sortedkeys = sortedkeys
table.sortedhashkeys = sortedhashkeys
-function table.sortedhash(t)
- local s = sortedhashkeys(t) -- maybe just sortedkeys
- local n = 0
- local function kv(s)
- n = n + 1
- local k = s[n]
- return k, t[k]
+local function nothing() end
+
+local function sortedhash(t)
+ if t then
+ local n, s = 0, sortedkeys(t) -- the robust one
+ local function kv(s)
+ n = n + 1
+ local k = s[n]
+ return k, t[k]
+ end
+ return kv, s
+ else
+ return nothing
end
- return kv, s
end
-table.sortedpairs = table.sortedhash
+table.sortedhash = sortedhash
+table.sortedpairs = sortedhash
-function table.append(t, list)
- for _,v in next, list do
- insert(t,v)
+function table.append(t,list)
+ local n = #t
+ for i=1,#list do
+ n = n + 1
+ t[n] = list[i]
end
+ return t
end
function table.prepend(t, list)
- for k,v in next, list do
- insert(t,k,v)
+ local nl = #list
+ local nt = nl + #t
+ for i=#t,1,-1 do
+ t[nt] = t[i]
+ nt = nt - 1
+ end
+ for i=1,#list do
+ t[i] = list[i]
end
+ return t
end
function table.merge(t, ...) -- first one is target
- t = t or {}
- local lst = {...}
+ t = t or { }
+ local lst = { ... }
for i=1,#lst do
for k, v in next, lst[i] do
t[k] = v
@@ -163,7 +202,7 @@ function table.merge(t, ...) -- first one is target
end
function table.merged(...)
- local tmp, lst = { }, {...}
+ local tmp, lst = { }, { ... }
for i=1,#lst do
for k, v in next, lst[i] do
tmp[k] = v
@@ -173,41 +212,45 @@ function table.merged(...)
end
function table.imerge(t, ...)
- local lst = {...}
+ local lst, nt = { ... }, #t
for i=1,#lst do
local nst = lst[i]
for j=1,#nst do
- t[#t+1] = nst[j]
+ nt = nt + 1
+ t[nt] = nst[j]
end
end
return t
end
function table.imerged(...)
- local tmp, lst = { }, {...}
+ local tmp, ntmp, lst = { }, 0, {...}
for i=1,#lst do
local nst = lst[i]
for j=1,#nst do
- tmp[#tmp+1] = nst[j]
+ ntmp = ntmp + 1
+ tmp[ntmp] = nst[j]
end
end
return tmp
end
-local function fastcopy(old) -- fast one
+local function fastcopy(old,metatabletoo) -- fast one
if old then
local new = { }
for k,v in next, old do
if type(v) == "table" then
- new[k] = fastcopy(v) -- was just table.copy
+ new[k] = fastcopy(v,metatabletoo) -- was just table.copy
else
new[k] = v
end
end
- -- optional second arg
- local mt = getmetatable(old)
- if mt then
- setmetatable(new,mt)
+ if metatabletoo then
+ -- optional second arg
+ local mt = getmetatable(old)
+ if mt then
+ setmetatable(new,mt)
+ end
end
return new
else
@@ -215,6 +258,8 @@ local function fastcopy(old) -- fast one
end
end
+-- todo : copy without metatable
+
local function copy(t, tables) -- taken from lua wiki, slightly adapted
tables = tables or { }
local tcopy = {}
@@ -247,33 +292,14 @@ end
table.fastcopy = fastcopy
table.copy = copy
--- roughly: copy-loop : unpack : sub == 0.9 : 0.4 : 0.45 (so in critical apps, use unpack)
-
-function table.sub(t,i,j)
- return { unpack(t,i,j) }
-end
-
-function table.replace(a,b)
- for k,v in next, b do
- a[k] = v
+function table.derive(parent)
+ local child = { }
+ if parent then
+ setmetatable(child,{ __index = parent })
end
+ return child
end
--- slower than #t on indexed tables (#t only returns the size of the numerically indexed slice)
-
-function table.is_empty(t) -- obolete, use inline code instead
- return not t or not next(t)
-end
-
-function table.one_entry(t) -- obolete, use inline code instead
- local n = next(t)
- return n and not next(t,n)
-end
-
---~ function table.starts_at(t) -- obsolete, not nice anyway
---~ return ipairs(t,1)(t,0)
---~ end
-
function table.tohash(t,value)
local h = { }
if t then
@@ -286,27 +312,19 @@ function table.tohash(t,value)
end
function table.fromhash(t)
- local h = { }
+ local hsh, h = { }, 0
for k, v in next, t do -- no ipairs here
- if v then h[#h+1] = k end
+ if v then
+ h = h + 1
+ hsh[h] = k
+ end
end
- return h
+ return hsh
end
---~ print(table.serialize(t), "\n")
---~ print(table.serialize(t,"name"), "\n")
---~ print(table.serialize(t,false), "\n")
---~ print(table.serialize(t,true), "\n")
---~ print(table.serialize(t,"name",true), "\n")
---~ print(table.serialize(t,"name",true,true), "\n")
-
-table.serialize_functions = true
-table.serialize_compact = true
-table.serialize_inline = true
-
local noquotes, hexify, handle, reduce, compact, inline, functions
-local reserved = table.tohash { -- intercept a language flaw, no reserved words as key
+local reserved = table.tohash { -- intercept a language inconvenience: no reserved words as key
'and', 'break', 'do', 'else', 'elseif', 'end', 'false', 'for', 'function', 'if',
'in', 'local', 'nil', 'not', 'or', 'repeat', 'return', 'then', 'true', 'until', 'while',
}
@@ -318,20 +336,23 @@ local function simple_table(t)
n = n + 1
end
if n == #t then
- local tt = { }
+ local tt, nt = { }, 0
for i=1,#t do
local v = t[i]
local tv = type(v)
if tv == "number" then
+ nt = nt + 1
if hexify then
- tt[#tt+1] = format("0x%04X",v)
+ tt[nt] = format("0x%04X",v)
else
- tt[#tt+1] = tostring(v) -- tostring not needed
+ tt[nt] = tostring(v) -- tostring not needed
end
elseif tv == "boolean" then
- tt[#tt+1] = tostring(v)
+ nt = nt + 1
+ tt[nt] = tostring(v)
elseif tv == "string" then
- tt[#tt+1] = format("%q",v)
+ nt = nt + 1
+ tt[nt] = format("%q",v)
else
tt = nil
break
@@ -352,36 +373,56 @@ end
-- problem: there no good number_to_string converter with the best resolution
+local function dummy() end
+
local function do_serialize(root,name,depth,level,indexed)
if level > 0 then
depth = depth .. " "
if indexed then
handle(format("%s{",depth))
- elseif name then
- --~ handle(format("%s%s={",depth,key(name)))
- if type(name) == "number" then -- or find(k,"^%d+$") then
+ else
+ local tn = type(name)
+ if tn == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s[0x%04X]={",depth,name))
else
handle(format("%s[%s]={",depth,name))
end
- elseif noquotes and not reserved[name] and find(name,"^%a[%w%_]*$") then
- handle(format("%s%s={",depth,name))
+ elseif tn == "string" then
+ if noquotes and not reserved[name] and find(name,"^%a[%w%_]*$") then
+ handle(format("%s%s={",depth,name))
+ else
+ handle(format("%s[%q]={",depth,name))
+ end
+ elseif tn == "boolean" then
+ handle(format("%s[%s]={",depth,tostring(name)))
else
- handle(format("%s[%q]={",depth,name))
+ handle(format("%s{",depth))
end
- else
- handle(format("%s{",depth))
end
end
-- we could check for k (index) being number (cardinal)
if root and next(root) then
- local first, last = nil, 0 -- #root cannot be trusted here (will be ok in 5.2 when ipairs is gone)
+ -- local first, last = nil, 0 -- #root cannot be trusted here (will be ok in 5.2 when ipairs is gone)
+ -- if compact then
+ -- -- NOT: for k=1,#root do (we need to quit at nil)
+ -- for k,v in ipairs(root) do -- can we use next?
+ -- if not first then first = k end
+ -- last = last + 1
+ -- end
+ -- end
+ local first, last = nil, 0
if compact then
- -- NOT: for k=1,#root do (we need to quit at nil)
- for k,v in ipairs(root) do -- can we use next?
- if not first then first = k end
- last = last + 1
+ last = #root
+ for k=1,last do
+-- if not root[k] then
+ if root[k] == nil then
+ last = k - 1
+ break
+ end
+ end
+ if last > 0 then
+ first = 1
end
end
local sk = sortedkeys(root)
@@ -391,8 +432,8 @@ local function do_serialize(root,name,depth,level,indexed)
--~ if v == root then
-- circular
--~ else
- local t = type(v)
- if compact and first and type(k) == "number" and k >= first and k <= last then
+ local t, tk = type(v), type(k)
+ if compact and first and tk == "number" and k >= first and k <= last then
if t == "number" then
if hexify then
handle(format("%s 0x%04X,",depth,v))
@@ -434,17 +475,18 @@ local function do_serialize(root,name,depth,level,indexed)
handle(format("%s __p__=nil,",depth))
end
elseif t == "number" then
- --~ if hexify then
- --~ handle(format("%s %s=0x%04X,",depth,key(k),v))
- --~ else
- --~ handle(format("%s %s=%s,",depth,key(k),v)) -- %.99g
- --~ end
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]=0x%04X,",depth,k,v))
else
handle(format("%s [%s]=%s,",depth,k,v)) -- %.99g
end
+ elseif tk == "boolean" then
+ if hexify then
+ handle(format("%s [%s]=0x%04X,",depth,tostring(k),v))
+ else
+ handle(format("%s [%s]=%s,",depth,tostring(k),v)) -- %.99g
+ end
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
if hexify then
handle(format("%s %s=0x%04X,",depth,k,v))
@@ -460,26 +502,28 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif t == "string" then
if reduce and tonumber(v) then
- --~ handle(format("%s %s=%s,",depth,key(k),v))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]=%s,",depth,k,v))
else
handle(format("%s [%s]=%s,",depth,k,v))
end
+ elseif tk == "boolean" then
+ handle(format("%s [%s]=%s,",depth,tostring(k),v))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
handle(format("%s %s=%s,",depth,k,v))
else
handle(format("%s [%q]=%s,",depth,k,v))
end
else
- --~ handle(format("%s %s=%q,",depth,key(k),v))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]=%q,",depth,k,v))
else
handle(format("%s [%s]=%q,",depth,k,v))
end
+ elseif tk == "boolean" then
+ handle(format("%s [%s]=%q,",depth,tostring(k),v))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
handle(format("%s %s=%q,",depth,k,v))
else
@@ -488,13 +532,14 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif t == "table" then
if not next(v) then
- --~ handle(format("%s %s={},",depth,key(k)))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]={},",depth,k))
else
handle(format("%s [%s]={},",depth,k))
end
+ elseif tk == "boolean" then
+ handle(format("%s [%s]={},",depth,tostring(k)))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
handle(format("%s %s={},",depth,k))
else
@@ -503,13 +548,14 @@ local function do_serialize(root,name,depth,level,indexed)
elseif inline then
local st = simple_table(v)
if st then
- --~ handle(format("%s %s={ %s },",depth,key(k),concat(st,", ")))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]={ %s },",depth,k,concat(st,", ")))
else
handle(format("%s [%s]={ %s },",depth,k,concat(st,", ")))
end
+ elseif tk == "boolean" then -- or find(k,"^%d+$") then
+ handle(format("%s [%s]={ %s },",depth,tostring(k),concat(st,", ")))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
handle(format("%s %s={ %s },",depth,k,concat(st,", ")))
else
@@ -522,13 +568,14 @@ local function do_serialize(root,name,depth,level,indexed)
do_serialize(v,k,depth,level+1)
end
elseif t == "boolean" then
- --~ handle(format("%s %s=%s,",depth,key(k),tostring(v)))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]=%s,",depth,k,tostring(v)))
else
handle(format("%s [%s]=%s,",depth,k,tostring(v)))
end
+ elseif tk == "boolean" then -- or find(k,"^%d+$") then
+ handle(format("%s [%s]=%s,",depth,tostring(k),tostring(v)))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
handle(format("%s %s=%s,",depth,k,tostring(v)))
else
@@ -536,27 +583,31 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif t == "function" then
if functions then
- --~ handle(format('%s %s=loadstring(%q),',depth,key(k),dump(v)))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ local f = getinfo(v).what == "C" and dump(dummy) or dump(v)
+ -- local f = getinfo(v).what == "C" and dump(function(...) return v(...) end) or dump(v)
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
- handle(format("%s [0x%04X]=loadstring(%q),",depth,k,dump(v)))
+ handle(format("%s [0x%04X]=loadstring(%q),",depth,k,f))
else
- handle(format("%s [%s]=loadstring(%q),",depth,k,dump(v)))
+ handle(format("%s [%s]=loadstring(%q),",depth,k,f))
end
+ elseif tk == "boolean" then
+ handle(format("%s [%s]=loadstring(%q),",depth,tostring(k),f))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
- handle(format("%s %s=loadstring(%q),",depth,k,dump(v)))
+ handle(format("%s %s=loadstring(%q),",depth,k,f))
else
- handle(format("%s [%q]=loadstring(%q),",depth,k,dump(v)))
+ handle(format("%s [%q]=loadstring(%q),",depth,k,f))
end
end
else
- --~ handle(format("%s %s=%q,",depth,key(k),tostring(v)))
- if type(k) == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then -- or find(k,"^%d+$") then
if hexify then
handle(format("%s [0x%04X]=%q,",depth,k,tostring(v)))
else
handle(format("%s [%s]=%q,",depth,k,tostring(v)))
end
+ elseif tk == "boolean" then -- or find(k,"^%d+$") then
+ handle(format("%s [%s]=%q,",depth,tostring(k),tostring(v)))
elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
handle(format("%s %s=%q,",depth,k,tostring(v)))
else
@@ -574,15 +625,34 @@ end
-- replacing handle by a direct t[#t+1] = ... (plus test) is not much
-- faster (0.03 on 1.00 for zapfino.tma)
-local function serialize(root,name,_handle,_reduce,_noquotes,_hexify)
- noquotes = _noquotes
- hexify = _hexify
- handle = _handle or print
- reduce = _reduce or false
- compact = table.serialize_compact
- inline = compact and table.serialize_inline
- functions = table.serialize_functions
+local function serialize(_handle,root,name,specification) -- handle wins
local tname = type(name)
+ if type(specification) == "table" then
+ noquotes = specification.noquotes
+ hexify = specification.hexify
+ handle = _handle or specification.handle or print
+ reduce = specification.reduce or false
+ functions = specification.functions
+ compact = specification.compact
+ inline = specification.inline and compact
+ if functions == nil then
+ functions = true
+ end
+ if compact == nil then
+ compact = true
+ end
+ if inline == nil then
+ inline = compact
+ end
+ else
+ noquotes = false
+ hexify = false
+ handle = _handle or print
+ reduce = false
+ compact = true
+ inline = true
+ functions = true
+ end
if tname == "string" then
if name == "return" then
handle("return {")
@@ -604,8 +674,17 @@ local function serialize(root,name,_handle,_reduce,_noquotes,_hexify)
else
handle("t={")
end
- if root and next(root) then
- do_serialize(root,name,"",0,indexed)
+ if root then
+ -- The dummy access will initialize a table that has a delayed initialization
+ -- using a metatable. (maybe explicitly test for metatable)
+ if getmetatable(root) then -- todo: make this an option, maybe even per subtable
+ local dummy = root._w_h_a_t_e_v_e_r_
+ root._w_h_a_t_e_v_e_r_ = nil
+ end
+ -- Let's forget about empty tables.
+ if next(root) then
+ do_serialize(root,name,"",0)
+ end
end
handle("}")
end
@@ -619,18 +698,17 @@ end
--~ 'return' : return { }
--~ number : [number] = { }
-function table.serialize(root,name,reduce,noquotes,hexify)
- local t = { }
+function table.serialize(root,name,specification)
+ local t, n = { }, 0
local function flush(s)
- t[#t+1] = s
+ n = n + 1
+ t[n] = s
end
- serialize(root,name,flush,reduce,noquotes,hexify)
+ serialize(flush,root,name,specification)
return concat(t,"\n")
end
-function table.tohandle(handle,root,name,reduce,noquotes,hexify)
- serialize(root,name,handle,reduce,noquotes,hexify)
-end
+table.tohandle = serialize
-- sometimes tables are real use (zapfino extra pro is some 85M) in which
-- case a stepwise serialization is nice; actually, we could consider:
@@ -641,73 +719,63 @@ end
--
-- so this is on the todo list
-table.tofile_maxtab = 2*1024
+local maxtab = 2*1024
-function table.tofile(filename,root,name,reduce,noquotes,hexify)
+function table.tofile(filename,root,name,specification)
local f = io.open(filename,'w')
if f then
- local maxtab = table.tofile_maxtab
if maxtab > 1 then
- local t = { }
+ local t, n = { }, 0
local function flush(s)
- t[#t+1] = s
- if #t > maxtab then
+ n = n + 1
+ t[n] = s
+ if n > maxtab then
f:write(concat(t,"\n"),"\n") -- hm, write(sometable) should be nice
- t = { }
+ t, n = { }, 0 -- we could recycle t if needed
end
end
- serialize(root,name,flush,reduce,noquotes,hexify)
+ serialize(flush,root,name,specification)
f:write(concat(t,"\n"),"\n")
else
local function flush(s)
f:write(s,"\n")
end
- serialize(root,name,flush,reduce,noquotes,hexify)
+ serialize(flush,root,name,specification)
end
f:close()
+ io.flush()
end
end
-local function flatten(t,f,complete) -- is this used? meybe a variant with next, ...
- for i=1,#t do
- local v = t[i]
- if type(v) == "table" then
- if complete or type(v[1]) == "table" then
- flatten(v,f,complete)
+local function flattened(t,f,depth)
+ if f == nil then
+ f = { }
+ depth = 0xFFFF
+ elseif tonumber(f) then
+ -- assume then only two arguments are given
+ depth = f
+ f = { }
+ elseif not depth then
+ depth = 0xFFFF
+ end
+ for k, v in next, t do
+ if type(k) ~= "number" then
+ if depth > 0 and type(v) == "table" then
+ flattened(v,f,depth-1)
else
- f[#f+1] = v
+ f[k] = v
end
- else
- f[#f+1] = v
end
end
-end
-
-function table.flatten(t)
- local f = { }
- flatten(t,f,true)
- return f
-end
-
-function table.unnest(t) -- bad name
- local f = { }
- flatten(t,f,false)
- return f
-end
-
-table.flatten_one_level = table.unnest
-
--- a better one:
-
-local function flattened(t,f)
- if not f then
- f = { }
- end
- for k, v in next, t do
- if type(v) == "table" then
- flattened(v,f)
+ local n = #f
+ for k=1,#t do
+ local v = t[k]
+ if depth > 0 and type(v) == "table" then
+ flattened(v,f,depth-1)
+ n = #f
else
- f[k] = v
+ n = n + 1
+ f[n] = v
end
end
return f
@@ -715,49 +783,27 @@ end
table.flattened = flattened
--- the next three may disappear
-
-function table.remove_value(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
+local function unnest(t,f) -- only used in mk, for old times sake
+ if not f then -- and only relevant for token lists
+ f = { }
end
-end
-
-function table.insert_before_value(t,value,str)
- if str then
- if value then
- for i=1,#t do
- if t[i] == value then
- insert(t,i,str)
- return
- end
+ for i=1,#t do
+ local v = t[i]
+ if type(v) == "table" then
+ if type(v[1]) == "table" then
+ unnest(v,f)
+ else
+ f[#f+1] = v
end
+ else
+ f[#f+1] = v
end
- insert(t,1,str)
- elseif value then
- insert(t,1,value)
end
+ return f
end
-function table.insert_after_value(t,value,str)
- if str then
- if value then
- for i=1,#t do
- if t[i] == value then
- insert(t,i+1,str)
- return
- end
- end
- end
- t[#t+1] = str
- elseif value then
- t[#t+1] = value
- end
+function table.unnest(t) -- bad name
+ return unnest(t)
end
local function are_equal(a,b,n,m) -- indexed
@@ -784,7 +830,7 @@ end
local function identical(a,b) -- assumes same structure
for ka, va in next, a do
- local vb = b[k]
+ local vb = b[ka]
if va == vb then
-- same
elseif type(va) == "table" and type(vb) == "table" then
@@ -798,8 +844,8 @@ local function identical(a,b) -- assumes same structure
return true
end
-table.are_equal = are_equal
table.identical = identical
+table.are_equal = are_equal
-- maybe also make a combined one
@@ -825,86 +871,126 @@ function table.contains(t, v)
end
function table.count(t)
- local n, e = 0, next(t)
- while e do
- n, e = n + 1, next(t,e)
+ local n = 0
+ for k, v in next, t do
+ n = n + 1
end
return n
end
-function table.swapped(t)
- local s = { }
+function table.swapped(t,s) -- hash
+ local n = { }
+ if s then
+--~ for i=1,#s do
+--~ n[i] = s[i]
+--~ end
+ for k, v in next, s do
+ n[k] = v
+ end
+ end
+--~ for i=1,#t do
+--~ local ti = t[i] -- don't ask but t[i] can be nil
+--~ if ti then
+--~ n[ti] = i
+--~ end
+--~ end
for k, v in next, t do
- s[v] = k
+ n[v] = k
end
- return s
+ return n
end
---~ function table.are_equal(a,b)
---~ return table.serialize(a) == table.serialize(b)
---~ end
-
-function table.clone(t,p) -- t is optional or nil or table
- if not p then
- t, p = { }, t or { }
- elseif not t then
- t = { }
+function table.reversed(t)
+ if t then
+ local tt, tn = { }, #t
+ if tn > 0 then
+ local ttn = 0
+ for i=tn,1,-1 do
+ ttn = ttn + 1
+ tt[ttn] = t[i]
+ end
+ end
+ return tt
end
- setmetatable(t, { __index = function(_,key) return p[key] end }) -- why not __index = p ?
- return t
end
-function table.hexed(t,seperator)
- local tt = { }
- for i=1,#t do tt[i] = format("0x%04X",t[i]) end
- return concat(tt,seperator or " ")
+function table.sequenced(t,sep) -- hash only
+ if t then
+ local s, n = { }, 0
+ for k, v in sortedhash(t) do
+ if simple then
+ if v == true then
+ n = n + 1
+ s[n] = k
+ elseif v and v~= "" then
+ n = n + 1
+ s[n] = k .. "=" .. tostring(v)
+ end
+ else
+ n = n + 1
+ s[n] = k .. "=" .. tostring(v)
+ end
+ end
+ return concat(s, sep or " | ")
+ else
+ return ""
+ end
end
-function table.reverse_hash(h)
- local r = { }
- for k,v in next, h do
- r[v] = lower(gsub(k," ",""))
+function table.print(t,...)
+ if type(t) ~= "table" then
+ print(tostring(t))
+ else
+ table.tohandle(print,t,...)
end
- return r
end
-function table.reverse(t)
- local tt = { }
- if #t > 0 then
- for i=#t,1,-1 do
- tt[#tt+1] = t[i]
- end
- end
- return tt
+-- -- -- obsolete but we keep them for a while and might comment them later -- -- --
+
+-- roughly: copy-loop : unpack : sub == 0.9 : 0.4 : 0.45 (so in critical apps, use unpack)
+
+function table.sub(t,i,j)
+ return { unpack(t,i,j) }
end
-function table.insert_before_value(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)
+-- slower than #t on indexed tables (#t only returns the size of the numerically indexed slice)
+
+function table.is_empty(t)
+ return not t or not next(t)
end
-function table.insert_after_value(t,value,extra)
- for i=1,#t do
- if t[i] == extra then
- remove(t,i)
- end
+function table.has_one_entry(t)
+ return t and not next(t,next(t))
+end
+
+-- new
+
+function table.loweredkeys(t) -- maybe utf
+ local l = { }
+ for k, v in next, t do
+ l[lower(k)] = v
end
- for i=1,#t do
- if t[i] == value then
- insert(t,i+1,extra)
- return
+ return l
+end
+
+-- new, might move (maybe duplicate)
+
+function table.unique(old)
+ local hash = { }
+ local new = { }
+ local n = 0
+ for i=1,#old do
+ local oi = old[i]
+ if not hash[oi] then
+ n = n + 1
+ new[n] = oi
+ hash[oi] = true
end
end
- insert(t,#t+1,extra)
+ return new
end
+-- function table.sorted(t,...)
+-- table.sort(t,...)
+-- return t -- still sorts in-place
+-- end
diff --git a/lualibs-url.lua b/lualibs-url.lua
index 83b8fcc..ab50028 100644
--- a/lualibs-url.lua
+++ b/lualibs-url.lua
@@ -339,3 +339,5 @@ end
--~ test("zip:///oeps/oeps.zip#bla/bla.tex")
--~ test("zip:///oeps/oeps.zip?bla/bla.tex")
+
+--~ table.print(url.hashed("/test?test"))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 01:21:00 +0000