OC-PsychOS2/exec/ed.lua

130 lines
2.2 KiB
Lua

local tA = {...}
local ft, p, fp, ct, il, it, c, C = {}, 1, fp or tA[1] or "", {}, "", {}, "", C -- file table, pointer, filename, command table, input line, input table, command, content
function ct.readfile(fp,rp)
if not fp then return end
if not rp then ft = {} end
local f=io.open(fp,"rb")
if f then
C=f:read("*a")
f:close()
for l in C:gmatch("[^\n]+") do
ft[#ft+1] = l
end
end
end
function ct.writefile(nfp)
if not nfp then nfp = fp end
print(nfp)
f=io.open(nfp,"wb")
if f then
for k,v in ipairs(ft) do
print(v)
f:write(v.."\n")
end
coroutine.yield()
f:close()
coroutine.yield()
print(f.b)
end
end
function ct.list(s,e)
s,e = s or 1, e or #ft
for i = s,e do
if ft[i] then
print(string.format("%4d\t %s",i,ft[i]))
end
end
end
function ct.sp(np)
np=tonumber(np)
if np then
if np > #ft then
np = #ft
elseif np < 1 then
np = 0
end
p=np
end
end
function ct.pointer(np)
ct.sp(np)
print(string.format("%4d\t %s",p,ft[p]))
end
function ct.insert(np)
ct.sp(np)
while true do
io.write(string.format("%4d\t ",p))
local l=io.read()
if l == "." then break end
table.insert(ft,p,l)
p=p+1
end
end
function ct.append(np)
ct.sp(np)
p=p+1
if #ft < 1 then p = 1 end
ct.insert()
end
function ct.delete(np,n)
ct.sp(np)
_G.clip = ""
for i = 1, (n or 1) do
_G.clip = _G.clip .. table.remove(ft,p) .. "\n"
end
end
function ct.substitute(np,n)
ct.delete(np,n)
ct.insert(np)
end
function ct.filename(np)
if np then fp = np end
print(fp)
end
local function rawpaste()
for line in string.gmatch(_G.clip,"[^\n]") do
print(string.format("%4d\t %s",p,line))
table.insert(ft,p,line)
end
end
function ct.pasteprevious(np)
ct.sp(np)
rawpaste()
end
function ct.paste(np)
ct.sp(np)
p = p + 1
rawpaste()
end
ct.o = ct.readfile
ct.w = ct.writefile
ct.l = ct.list
ct.p = ct.pointer
ct.i = ct.insert
ct.a = ct.append
ct.s = ct.substitute
ct.d = ct.delete
ct.f = ct.filename
ct.PP = ct.pasteprevious
ct.P = ct.paste
ct.readfile(fp)
while true do
io.write("skex2> ")
il,it=io.read(),{}
for w in il:gmatch("%S+") do
it[#it+1] = w
end
c=table.remove(it,1)
if c == "quit" or c == "q" then
break
elseif c:sub(1,1) == "!" then
print(pcall(load(c:sub(2))))
elseif ct[c] ~= nil then
ct[c](table.unpack(it))
end
end