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magik6000

Nov 23rd, 2013

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--CCPT - ComputerCraft Packaging Tool
if not http then
error("HTTP API MUST be enabled to use this program")
end
--Pseudo enums
local validator = {ok = 0, installed = 1, file_conflict = 2}
---Pre-definitions
local install = nil
local remove = nil
---UTILITIES
List = {}
function List.new ()
return {first = 0, last = -1}
end
function List.pushleft (list, value)
local first = list.first - 1
list.first = first
list[first] = value
end
function List.pushright (list, value)
local last = list.last + 1
list.last = last
list[last] = value
end
function List.popleft (list)
local first = list.first
if first > list.last then return nil end
local value = list[first]
list[first] = nil
list.first = first + 1
return value
end
function List.popright (list)
local last = list.last
if list.first > last then return nil end
local value = list[last]
list[last] = nil
list.last = last - 1
return value
end
local function CGetS(file,name)
local _cfg = fs.open(file,"r")
if not _cfg then
error("Could not open configuration file: "..file)
end
local x = true;
while x do
local line = _cfg.readLine()
if line == nil then
x = false;
else
local side = false
local prop = ""
local val = ""
for a=1,#line do
if line:sub(a,a) == '=' then
side = true
elseif side then
val = val .. line:sub(a,a)
else
prop = prop .. line:sub(a,a)
end
end
if prop == name then
_cfg.close()
return val
end
end
end
_cfg.close()
end
local function CGetN(file,name)
return tonumber(CGetS(file,name))
end
local function download(file, url)
local res = http.get(url)
if res then
if file ~= nil then
fs.delete(file)
fs.makeDir(file)
fs.delete(file)
local fhnd = fs.open(file, "w");
if fhnd then
fhnd.write(res.readAll())
fhnd.close()
return res.readAll()
else
res.close()
error("Could not open "..file.." for writing")
end
else
return res.readAll()
end
else
print("WARNING:Download failed for: "..url)
end
res.close()
end
function split(text,splitter)
local rt = {}
local act = ""
for x=1,#text do
if text:sub(x,x+#splitter-1) == splitter then
rt[#rt+1]=act
act=""
else
act = act .. text:sub(x,x)
end
end
if act ~= "" then
rt[#rt+1] = act
end
return rt;
end
---Intarnal functions
local function update_list()
--local sync = CGetS("/etc/ccpt/config","master")
--if sync then
--download("/etc/ccpt/list",sync)
local run = true
local exec = List.new()
local num = 0
local sources = fs.open("/etc/ccpt/sources","r")
if not sources then
error("Could not open base file: /etc/ccpt/list")
end
local x = true;
while x do
local line = sources.readLine()
if line == nil then
x = false;
else
print("List:"..line)
List.pushright(exec,download(nil,line))
end
end
fs.delete("/etc/ccpt/list")
fs.makeDir("/etc/ccpt/list")
fs.delete("/etc/ccpt/list")
local fhnd = fs.open("/etc/ccpt/list", "w");
if fhnd then
while run do
local proc = List.popright(exec)
if proc then
local tline = split(proc,"\n")
for k,val in pairs(tline) do
local row = split(val,";")
if row[1] == "p" then
fhnd.writeLine(val)
num = num + 1
elseif row[1] == "s" then
print("List:"..row[2])
local dl = download(nil,row[2])
if dl then
List.pushright(exec,dl)
end
end
end
else
run = false
end
end
fhnd.close()
else
error("Could not open "..file.." for writing")
end
print("Packages defined: "..tostring(num))
end
local function register(name,version,header)
local reg = nil
if fs.exists("/etc/ccpt/installed") then
reg = fs.open("/etc/ccpt/installed","a")
else
reg = fs.open("/etc/ccpt/installed","w")
end
if reg then
reg.writeLine(name..";"..tostring(version))
reg.close()
else
error("Critical:Could not register installation")
end
local freg = nil
if fs.exists("/etc/ccpt/files") then
freg = fs.open("/etc/ccpt/files","a")
else
freg = fs.open("/etc/ccpt/files","w")
end
if freg then
local lhead = split(header,"\n")
local x = 1
for x = 1, #lhead do
if split(lhead[x],";")[1] == "f" then
freg.writeLine(name..";"..split(lhead[x],";")[2])
end
end
freg.close()
else
error("Error:Could not register files")
end
end
local function base_find(name)
local base = fs.open("/etc/ccpt/list","r")
if not base then
error("Could not open base file: /etc/ccpt/list")
end
local x = true;
while x do
local line = base.readLine()
if line == nil then
x = false;
else
local entry = split(line,";")
if entry[1] == "p" then
if entry[2] == name then
local ret = {name=entry[2],url=entry[4],version=tonumber(entry[3])}
return ret
end
end
end
end
end
local function validate(pname,header)
local instbase = fs.open("/etc/ccpt/installed","r")
if instbase then
local x = true
while x do
local tline = instbase.readLine()
if tline == nil then
x = false
else
if pname == split(tline,";")[1] then
return validator.installed
end
end
end
instbase.close()
end
--local filebase = fs.open("/etc/ccpt/files","r")
if header then
lhead = split(header,"\n")
local x = 1
for x = 1, #lhead do
if split(lhead[x],";")[1] == "f" then
if fs.exists(split(lhead[x],";")[2]) then
print("[info]Conflict: "..split(lhead[x],";")[2])
return validator.file_conflict
end
end
end
end
return validator.ok
end
local function download_files(url,header)
local lhead = split(header,"\n")
local x = 1
for x = 1, #lhead do
if split(lhead[x],";")[1] == "f" then
download(split(lhead[x],";")[2],url..split(lhead[x],";")[2])
end
if split(lhead[x],";")[1] == "u" then
download(split(lhead[x],";")[2],split(lhead[x],";")[3])
end
end
end
local function run_scripts(url,header)
local lhead = split(header,"\n")
local x = 1
for x = 1, #lhead do
if split(lhead[x],";")[1] == "s" then
download("/tmp/ccptpirs",url..split(lhead[x],";")[2])
shell.run("/tmp/ccptpirs")
fs.delete("/tmp/ccptpirs")
end
end
end
local function dep_register(what,onwhat)
local reg = nil
if fs.exists("/etc/ccpt/dtree") then
reg = fs.open("/etc/ccpt/dtree","a")
else
reg = fs.open("/etc/ccpt/dtree","w")
end
if reg then
reg.writeLine(what..";"..onwhat)
reg.close()
else
error("Critical:Could not register dependencies")
end
end
local function dependencies(header,package)
local lhead = split(header,"\n")
local x = 1
for x = 1, #lhead do
if split(lhead[x],";")[1] == "d" then
install(split(lhead[x],";")[2])
dep_register(package,split(lhead[x],";")[2])
end
end
end
local function filelist(package)
local freg = fs.open("/etc/ccpt/files","r")
if freg then
local ret = {}
local x = true
while x do
local tline = freg.readLine()
if tline == nil then
x = false
else
row = split(tline,";")
if row[1] == package then
ret[#ret+1] = row[2]
end
end
end
freg.close()
return ret
end
end
local function get_deps(package)
local reg = fs.open("/etc/ccpt/dtree","r")
if reg then
local ret = {}
local x = true
while x do
local tline = reg.readLine()
if tline == nil then
x = false
else
local row = split(tline,";")
if row[1] == package then
ret[#ret+1] = row[2]
end
end
end
reg.close()
return ret
end
end
local function get_refcount(package)
local reg = fs.open("/etc/ccpt/dtree","r")
local ret = 0
if reg then
local x = true
while x do
local tline = reg.readLine()
if tline == nil then
x = false
else
local row = split(tline,";")
if row[2] == package then
ret = ret + 1
end
end
end
reg.close()
end
return ret
end
local function get_unused(list)
local x = 1
local ret = {}
if list then
for x = 1, #list do
if get_refcount(list[x]) == 0 then
ret[#ret + 1] = list[x]
end
end
end
return ret
end
local function unregister(package)
local reg = fs.open("/etc/ccpt/installed","r")
local newbase = {}
if reg then
local x = true
while x do
local tline = reg.readLine()
if tline == nil then
x = false
else
local row = split(tline,";")
if row[1] ~= package then
newbase[#newbase+1] = tline
end
end
end
reg.close()
end
fs.delete("/etc/ccpt/installed")
reg = fs.open("/etc/ccpt/installed","w")
if reg then
local x = 1
for x = 1, #newbase do
reg.writeLine(newbase[x])
end
reg.close()
else
error("CRITICAL: Could not open database for writing")
end
reg = fs.open("/etc/ccpt/files","r")
newbase = {}
if reg then
local x = true
while x do
local tline = reg.readLine()
if tline == nil then
x = false
else
local row = split(tline,";")
if row[1] ~= package then
newbase[#newbase+1] = tline
end
end
end
reg.close()
end
fs.delete("/etc/ccpt/files")
reg = fs.open("/etc/ccpt/files","w")
if reg then
local x = 1
for x = 1, #newbase do
reg.writeLine(newbase[x])
end
reg.close()
else
error("CRITICAL: Could not open file base for writing")
end
end
local function deptree_unregister(package)
local reg = fs.open("/etc/ccpt/dtree","r")
local newbase = {}
if reg then
local x = true
while x do
local tline = reg.readLine()
if tline == nil then
x = false
else
local row = split(tline,";")
if row[1] ~= package then
newbase[#newbase+1] = tline
end
end
end
reg.close()
end
fs.delete("/etc/ccpt/dtree")
reg = fs.open("/etc/ccpt/dtree","w")
if reg then
local x = 1
for x = 1, #newbase do
reg.writeLine(newbase[x])
end
reg.close()
else
error("CRITICAL: Could not dtree database for writing")
end
end
local function get_installed()
local reg = fs.open("/etc/ccpt/installed","r")
local ret = {}
if reg then
local x = true
while x do
local tline = reg.readLine()
if tline == nil then
x = false
else
local row = split(tline,";")
ret[#ret + 1] = {name = row[1], version = tonumber(row[2])}
end
end
reg.close()
end
return ret
end
local function list_upgardable()
local installed = get_installed()
local ret = {}
for k,val in pairs(installed) do
if val.version ~= base_find(val.name).version then
ret[#ret + 1] = val.name
end
end
return ret
end
install = function (package)
print("["..package.."]Reading Database")
local entry = base_find(package)
if entry then
print("["..package.."]Downloading package header")
local header = download(nil, entry.url..entry.name.."/index")
print("["..package.."]Checking for conflicts")
local vres = validate(entry.name,header)
if vres == validator.ok then
print("["..package.."]Checking dependencies")
dependencies(header,package)
print("["..package.."]Downloading files")
download_files(entry.url..entry.name,header)
print("["..package.."]Registering")
register(package,entry.version,header)
print("["..package.."]Running post-init scripts")
run_scripts(entry.url..entry.name,header)
elseif vres == validator.installed then
print("["..package.."]Package already installed")
else
error("["..package.."]File conflict detected!")
end
else
print("["..package.."]Package not found!")
end
end
remove = function (package)
print("["..package.."]Reading database")
if validate(package,nil) == validator.installed then
print("["..package.."]Removing files")
local list = filelist(package)
local removed = 0
if list then
local x = 1
for x = 1, #list do
fs.delete(list[x])
removed = removed + 1
end
end
print("["..package.."]"..tostring(removed).." files removed")
print("["..package.."]Removing from database")
unregister(package)
print("["..package.."]Removing unused dependencies")
local deps = get_deps(package)
deptree_unregister(package)
local remlist = get_unused(deps)
for k,val in pairs(remlist) do
remove(val)
end
else
print("["..package.."]Package not installed")
end
end
local function upgrade()
print("Updating package list")
update_list()
print("Upgrading packages")
local todo = list_upgardable()
for k,val in pairs(todo) do
remove(val)
install(val)
end
print(tostring(#todo).." Packages upgraded")
end
---MAIN CODE
local argv = {...}
if argv[1] == "init" then
if fs.exists("/etc/ccpt") then
print("ComuterCraftPackagingTool already initated")
else
print("Installing directories")
fs.makeDir("/etc/")
fs.makeDir("/etc/ccpt")
fs.makeDir("/bin/")
fs.makeDir("/usr/")
fs.makeDir("/tmp/")
fs.makeDir("/usr/bin")
fs.makeDir("/usr/lib")
fs.makeDir("/usr/share")
print("Downloading default configuration")
download("/etc/ccpt/sources","http://cc.nativehttp.org/fresh/sources")
download("/etc/ccpt/installed","http://cc.nativehttp.org/fresh/installed")
download("/etc/ccpt/files","http://cc.nativehttp.org/fresh/files")
print("Checking for upgrades")
upgrade()
end
elseif argv[1] == "update" then
print("Updating package list")
update_list()
elseif argv[1] == "install" then
if argv[2] == nil then
print("Usage: ccpk install [name]")
else
install(argv[2])
end
elseif argv[1] == "remove" then
if argv[2] == nil then
print("Usage: ccpk remove [name]")
else
remove(argv[2])
end
elseif argv[1] == "upgrade" then
upgrade()
else
print("Usage:")
print("ccpt init")
print("ccpt install [name]")
print("ccpt remove [name]")
print("ccpt update")
print("ccpt upgrade")
end

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