Wow

vite.lua

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+--Vi Inspired Textual Editor === VITE
+-- Version alpha 0.02
+filename="./dummy.txt"
+VER="v0.02" 
+nc=require("nocurses")
+
+
+function at(s,p)
+    return string.sub(s,p,p)
+end
+
+----------------------------end small funcs
+function start()
+    nc.setunderline(true)
+    print("VITE === Vi Inspired Textual Editor === "..VER)    
+    
+    nc.setunderline(false)
+    currline=-1
+    currfile=-1
+    lines_tbl={}
+    cmd()
+    --after closing
+    if currfile ~= -1 then
+        print("closing vite...bye")
+        currfile:close()
+    end
+end
+-- list of Commands 
+-- ----------------
+-- * = newfile
+-- > = appendtext
+-- : = commands
+--
+function cmd()
+    while inp~=":q" do
+        -- main loop
+     if currline== -1 then
+            print("No file opened")
+     elseif currline~=-1 then
+            print(currline..":")
+     end
+     nc.setfontcolor("YELLOW")
+     inp = io.input():read("*l")
+     nc.setfontcolor("WHITE")
+     -- all commands start with a symbol 
+        if at(inp,1)=="*" and string.len(inp)<=1 then
+           print("You must enter a valid filename...")
+        elseif at(inp,1)=="*" and string.len(inp)>1 then
+            newfn=string.sub(inp,2)
+            new_file(newfn)
+            print("New File:"..newfn.."\n")
+            currline=1
+        elseif at(inp,1) == ">" and string.len(inp)==1  then
+            print("line [#"..currline.."]:")
+        -- if inp has > symbol, then its a literal line to write to file 
+        elseif at(inp,1) == ">" and string.len(inp)>1 then  
+            table.insert(lines_tbl,currline,string.sub(inp,2))
+            currline=currline+1
+        elseif at(inp,1) == ":" and at(inp,2)=="l" and string.len(inp)>2 then
+              -- TODO MAKE LOAD FUNC TODO
+        elseif at(inp,1) == ":" and at(inp,2)=="w" then
+           write_file() 
+        elseif at(inp,1) == "=" and string.len(inp)==1 then
+            display_text()
+        elseif string.match(inp,"[%d*][%>][%g*]") and string.len(inp)>2 then
+            add_line(lpos,str)
+        elseif at(inp,1)=="x" and at(inp,2)=="!" then
+            break
+        else
+            nc.setfontcolor("RED")
+            print("Unknown Command!")
+            nc.setfontcolor("WHITE")
+        -- end of command def ==========
+        end
+        
+    end
+end
+
+
+
+function add_line(lpos,str)
+    local str,lpos
+    if currfile~=-1 then
+        table.insert(lines_tbl,lpos,str)
+    else
+        print("No file Open!")
+    end
+end
+
+function write_file() -- flush data to the file":w" 
+    if currfile~=-1 then
+        currfile:write(table.concat(lines_tbl,"\n").."\n")
+        print("Flushed buffer unto "..newfn) 
+        -- TODO Show filesize
+    else
+        print("No file to write to !")
+    end
+end
+
+function new_file(fn) --also load
+    if currfile==-1 then 
+        currfile = io.open(fn,"w+")
+    elseif currfile~=-1 then
+        currfile:close()
+        -- XXX Make it ask for confirm
+        -- XXX make it display whats going on
+    currfile = io.open(fn,"w+")
+    end
+end
+
+function display_file()
+    currfile:seek("set")
+    local lnum = 1
+    for line in currfile:lines() do
+        nc.gotoxy(1,lnum)
+        print(lnum..":"..line)
+        lnum=lnum+1
+    end
+    print("=================================\n\n")
+end
+function display_text() -- prints lines_tbl
+    currfile:seek("set")
+    local line
+    nc.clrscr()
+    nc.setfontcolor("CYAN")
+    for k,ln in pairs(lines_tbl) do
+        nc.gotoxy(1,k)
+        print(k..":"..ln)
+    end
+    print("=================================\n\n")
+    nc.setfontcolor("WHITE")
+
+end
+
+start()