diff options
Diffstat (limited to 'src/fontloader/misc/fontloader-l-io.lua')
| -rw-r--r-- | src/fontloader/misc/fontloader-l-io.lua | 95 |
1 files changed, 72 insertions, 23 deletions
diff --git a/src/fontloader/misc/fontloader-l-io.lua b/src/fontloader/misc/fontloader-l-io.lua index a91d44d..2039017 100644 --- a/src/fontloader/misc/fontloader-l-io.lua +++ b/src/fontloader/misc/fontloader-l-io.lua @@ -7,6 +7,7 @@ if not modules then modules = { } end modules ['l-io'] = { } local io = io +local open, flush, write, read = io.open, io.flush, io.write, io.read local byte, find, gsub, format = string.byte, string.find, string.gsub, string.format local concat = table.concat local floor = math.floor @@ -30,15 +31,13 @@ local function readall(f) local size = f:seek("end") if size == 0 then return "" - elseif size < 1024*1024 then - f:seek("set",0) + end + f:seek("set",0) + if size < 1024*1024 then return f:read('*all') else - local done = f:seek("set",0) local step - if size < 1024*1024 then - step = 1024 * 1024 - elseif size > 16*1024*1024 then + if size > 16*1024*1024 then step = 16*1024*1024 else step = floor(size/(1024*1024)) * 1024 * 1024 / 8 @@ -58,9 +57,8 @@ end io.readall = readall function io.loaddata(filename,textmode) -- return nil if empty - local f = io.open(filename,(textmode and 'r') or 'rb') + local f = open(filename,(textmode and 'r') or 'rb') if f then - -- local data = f:read('*all') local data = readall(f) f:close() if #data > 0 then @@ -69,8 +67,55 @@ function io.loaddata(filename,textmode) -- return nil if empty end end +function io.copydata(source,target,action) + local f = open(source,"rb") + if f then + local g = open(target,"wb") + if g then + local size = f:seek("end") + if size == 0 then + -- empty + else + f:seek("set",0) + if size < 1024*1024 then + local data = f:read('*all') + if action then + data = action(data) + end + if data then + g:write(data) + end + else + local step + if size > 16*1024*1024 then + step = 16*1024*1024 + else + step = floor(size/(1024*1024)) * 1024 * 1024 / 8 + end + while true do + local data = f:read(step) + if data then + if action then + data = action(data) + end + if data then + g:write(data) + end + else + break + end + end + end + end + g:close() + end + f:close() + flush() + end +end + function io.savedata(filename,data,joiner) - local f = io.open(filename,"wb") + local f = open(filename,"wb") if f then if type(data) == "table" then f:write(concat(data,joiner or "")) @@ -80,7 +125,7 @@ function io.savedata(filename,data,joiner) f:write(data or "") end f:close() - io.flush() + flush() return true else return false @@ -90,7 +135,7 @@ end -- we can also chunk this one if needed: io.lines(filename,chunksize,"*l") function io.loadlines(filename,n) -- return nil if empty - local f = io.open(filename,'r') + local f = open(filename,'r') if not f then -- no file elseif n then @@ -118,7 +163,7 @@ function io.loadlines(filename,n) -- return nil if empty end function io.loadchunk(filename,n) - local f = io.open(filename,'rb') + local f = open(filename,'rb') if f then local data = f:read(n or 1024) f:close() @@ -129,7 +174,7 @@ function io.loadchunk(filename,n) end function io.exists(filename) - local f = io.open(filename) + local f = open(filename) if f == nil then return false else @@ -139,7 +184,7 @@ function io.exists(filename) end function io.size(filename) - local f = io.open(filename) + local f = open(filename) if f == nil then return 0 else @@ -149,11 +194,11 @@ function io.size(filename) end end -function io.noflines(f) +local function noflines(f) if type(f) == "string" then - local f = io.open(filename) + local f = open(filename) if f then - local n = f and io.noflines(f) or 0 + local n = f and noflines(f) or 0 f:close() return n else @@ -169,6 +214,10 @@ function io.noflines(f) end end +io.noflines = noflines + +-- inlined is faster + local nextchar = { [ 4] = function(f) return f:read(1,1,1,1) @@ -250,16 +299,16 @@ end function io.ask(question,default,options) while true do - io.write(question) + write(question) if options then - io.write(format(" [%s]",concat(options,"|"))) + write(format(" [%s]",concat(options,"|"))) end if default then - io.write(format(" [%s]",default)) + write(format(" [%s]",default)) end - io.write(format(" ")) - io.flush() - local answer = io.read() + write(format(" ")) + flush() + local answer = read() answer = gsub(answer,"^%s*(.*)%s*$","%1") if answer == "" and default then return default |