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if not modules then modules = { } end modules ['l-utils'] = {
version = 1.001,
comment = "companion to luat-lib.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- hm, quite unreadable
if not utils then utils = { } end
if not utils.merger then utils.merger = { } end
if not utils.lua then utils.lua = { } end
utils.merger.m_begin = "begin library merge"
utils.merger.m_end = "end library merge"
utils.merger.pattern =
"%c+" ..
"%-%-%s+" .. utils.merger.m_begin ..
"%c+(.-)%c+" ..
"%-%-%s+" .. utils.merger.m_end ..
"%c+"
function utils.merger._self_fake_()
return
"-- " .. "created merged file" .. "\n\n" ..
"-- " .. utils.merger.m_begin .. "\n\n" ..
"-- " .. utils.merger.m_end .. "\n\n"
end
function utils.report(...)
print(...)
end
utils.merger.strip_comment = true
function utils.merger._self_load_(name)
local f, data = io.open(name), ""
if f then
utils.report("reading merge from %s",name)
data = f:read("*all")
f:close()
else
utils.report("unknown file to merge %s",name)
end
if data and utils.merger.strip_comment then
-- saves some 20K
data = data:gsub("%-%-~[^\n\r]*[\r\n]", "")
end
return data or ""
end
function utils.merger._self_save_(name, data)
if data ~= "" then
local f = io.open(name,'w')
if f then
utils.report("saving merge from %s",name)
f:write(data)
f:close()
end
end
end
function utils.merger._self_swap_(data,code)
if data ~= "" then
return (data:gsub(utils.merger.pattern, function(s)
return "\n\n" .. "-- "..utils.merger.m_begin .. "\n" .. code .. "\n" .. "-- "..utils.merger.m_end .. "\n\n"
end, 1))
else
return ""
end
end
--~ stripper:
--~
--~ data = string.gsub(data,"%-%-~[^\n]*\n","")
--~ data = string.gsub(data,"\n\n+","\n")
function utils.merger._self_libs_(libs,list)
local result, f, frozen = { }, nil, false
result[#result+1] = "\n"
if type(libs) == 'string' then libs = { libs } end
if type(list) == 'string' then list = { list } end
local foundpath = nil
for _, lib in ipairs(libs) do
for _, pth in ipairs(list) do
pth = string.gsub(pth,"\\","/") -- file.clean_path
utils.report("checking library path %s",pth)
local name = pth .. "/" .. lib
if lfs.isfile(name) then
foundpath = pth
end
end
if foundpath then break end
end
if foundpath then
utils.report("using library path %s",foundpath)
local right, wrong = { }, { }
for _, lib in ipairs(libs) do
local fullname = foundpath .. "/" .. lib
if lfs.isfile(fullname) then
-- right[#right+1] = lib
utils.report("merging library %s",fullname)
result[#result+1] = "do -- create closure to overcome 200 locals limit"
result[#result+1] = io.loaddata(fullname,true)
result[#result+1] = "end -- of closure"
else
-- wrong[#wrong+1] = lib
utils.report("no library %s",fullname)
end
end
if #right > 0 then
utils.report("merged libraries: %s",table.concat(right," "))
end
if #wrong > 0 then
utils.report("skipped libraries: %s",table.concat(wrong," "))
end
else
utils.report("no valid library path found")
end
return table.concat(result, "\n\n")
end
function utils.merger.selfcreate(libs,list,target)
if target then
utils.merger._self_save_(
target,
utils.merger._self_swap_(
utils.merger._self_fake_(),
utils.merger._self_libs_(libs,list)
)
)
end
end
function utils.merger.selfmerge(name,libs,list,target)
utils.merger._self_save_(
target or name,
utils.merger._self_swap_(
utils.merger._self_load_(name),
utils.merger._self_libs_(libs,list)
)
)
end
function utils.merger.selfclean(name)
utils.merger._self_save_(
name,
utils.merger._self_swap_(
utils.merger._self_load_(name),
""
)
)
end
function utils.lua.compile(luafile, lucfile, cleanup, strip) -- defaults: cleanup=false strip=true
-- utils.report("compiling",luafile,"into",lucfile)
os.remove(lucfile)
local command = "-o " .. string.quote(lucfile) .. " " .. string.quote(luafile)
if strip ~= false then
command = "-s " .. command
end
local done = (os.spawn("texluac " .. command) == 0) or (os.spawn("luac " .. command) == 0)
if done and cleanup == true and lfs.isfile(lucfile) and lfs.isfile(luafile) then
-- utils.report("removing",luafile)
os.remove(luafile)
end
return done
end
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