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- -- ElvishJerricco's JSON parser
- -- http://www.computercraft.info/forums2/index.php?/topic/5854-json-api-v201-for-computercraft/
- ------------------------------------------------------------------ utils
- local controls = {["\n"]="\\n", ["\r"]="\\r", ["\t"]="\\t", ["\b"]="\\b", ["\f"]="\\f", ["\""]="\\\"", ["\\"]="\\\\"}
- local function isArray(t)
- local max = 0
- for k,v in pairs(t) do
- if type(k) ~= "number" then
- return false
- elseif k > max then
- max = k
- end
- end
- return max == #t
- end
- local whites = {['\n']=true; ['\r']=true; ['\t']=true; [' ']=true; [',']=true; [':']=true}
- function removeWhite(str)
- while whites[str:sub(1, 1)] do
- str = str:sub(2)
- end
- return str
- end
- ------------------------------------------------------------------ encoding
- local function encodeCommon(val, pretty, tabLevel, tTracking)
- local str = ""
- -- Tabbing util
- local function tab(s)
- str = str .. ("\t"):rep(tabLevel) .. s
- end
- local function arrEncoding(val, bracket, closeBracket, iterator, loopFunc)
- str = str .. bracket
- if pretty then
- str = str .. "\n"
- tabLevel = tabLevel + 1
- end
- for k,v in iterator(val) do
- tab("")
- loopFunc(k,v)
- str = str .. ","
- if pretty then str = str .. "\n" end
- end
- if pretty then
- tabLevel = tabLevel - 1
- end
- if str:sub(-2) == ",\n" then
- str = str:sub(1, -3) .. "\n"
- elseif str:sub(-1) == "," then
- str = str:sub(1, -2)
- end
- tab(closeBracket)
- end
- -- Table encoding
- if type(val) == "table" then
- assert(not tTracking[val], "Cannot encode a table holding itself recursively")
- tTracking[val] = true
- if isArray(val) then
- arrEncoding(val, "[", "]", ipairs, function(k,v)
- str = str .. encodeCommon(v, pretty, tabLevel, tTracking)
- end)
- else
- arrEncoding(val, "{", "}", pairs, function(k,v)
- assert(type(k) == "string", "JSON object keys must be strings", 2)
- str = str .. encodeCommon(k, pretty, tabLevel, tTracking)
- str = str .. (pretty and ": " or ":") .. encodeCommon(v, pretty, tabLevel, tTracking)
- end)
- end
- -- String encoding
- elseif type(val) == "string" then
- str = '"' .. val:gsub("[%c\"\\]", controls) .. '"'
- -- Number encoding
- elseif type(val) == "number" or type(val) == "boolean" then
- str = tostring(val)
- else
- error("JSON only supports arrays, objects, numbers, booleans, and strings", 2)
- end
- return str
- end
- function encode(val)
- return encodeCommon(val, false, 0, {})
- end
- function encodePretty(val)
- return encodeCommon(val, true, 0, {})
- end
- ------------------------------------------------------------------ decoding
- local decodeControls = {}
- for k,v in pairs(controls) do
- decodeControls[v] = k
- end
- function parseBoolean(str)
- if str:sub(1, 4) == "true" then
- return true, removeWhite(str:sub(5))
- else
- return false, removeWhite(str:sub(6))
- end
- end
- function parseNull(str)
- return nil, removeWhite(str:sub(5))
- end
- local numChars = {['e']=true; ['E']=true; ['+']=true; ['-']=true; ['.']=true}
- function parseNumber(str)
- local i = 1
- while numChars[str:sub(i, i)] or tonumber(str:sub(i, i)) do
- i = i + 1
- end
- local val = tonumber(str:sub(1, i - 1))
- str = removeWhite(str:sub(i))
- return val, str
- end
- function parseString(str)
- str = str:sub(2)
- local s = ""
- while str:sub(1,1) ~= "\"" do
- local next = str:sub(1,1)
- str = str:sub(2)
- assert(next ~= "\n", "Unclosed string")
- if next == "\\" then
- local escape = str:sub(1,1)
- str = str:sub(2)
- next = assert(decodeControls[next..escape], "Invalid escape character")
- end
- s = s .. next
- end
- return s, removeWhite(str:sub(2))
- end
- function parseArray(str)
- str = removeWhite(str:sub(2))
- local val = {}
- local i = 1
- while str:sub(1, 1) ~= "]" do
- local v = nil
- v, str = parseValue(str)
- val[i] = v
- i = i + 1
- str = removeWhite(str)
- end
- str = removeWhite(str:sub(2))
- return val, str
- end
- function parseObject(str)
- str = removeWhite(str:sub(2))
- local val = {}
- while str:sub(1, 1) ~= "}" do
- local k, v = nil, nil
- k, v, str = parseMember(str)
- val[k] = v
- str = removeWhite(str)
- end
- str = removeWhite(str:sub(2))
- return val, str
- end
- function parseMember(str)
- local k = nil
- k, str = parseValue(str)
- local val = nil
- val, str = parseValue(str)
- return k, val, str
- end
- function parseValue(str)
- local fchar = str:sub(1, 1)
- if fchar == "{" then
- return parseObject(str)
- elseif fchar == "[" then
- return parseArray(str)
- elseif tonumber(fchar) ~= nil or numChars[fchar] then
- return parseNumber(str)
- elseif str:sub(1, 4) == "true" or str:sub(1, 5) == "false" then
- return parseBoolean(str)
- elseif fchar == "\"" then
- return parseString(str)
- elseif str:sub(1, 4) == "null" then
- return parseNull(str)
- end
- return nil
- end
- function decode(str)
- str = removeWhite(str)
- t = parseValue(str)
- return t
- end
- function decodeFromFile(path)
- local file = assert(fs.open(path, "r"))
- local decoded = decode(file.readAll())
- file.close()
- return decoded
- end
- -- End of JSON parser
- -- Ramuthra's plane installer
- local github = "https://api.github.com/repos/Saldor010/Impending-Doom/contents"
- local args = {...}
- if args[1] then
- if not type(args[1]) == "string" then
- args[1] = nil
- elseif string.find(args[1],string.len(args[1]),string.len(args[1])) ~= "/" and string.find(args[1],string.len(args[1]),string.len(args[1])) ~= "\\" then
- args[1] = args[1].."/"
- end
- end
- local pathToInstall = args[1] or "ImpendingDoom/"
- local function downloadFile(url,filePath)
- local fileContent = http.get(url)
- if fileContent then fileContent = fileContent.readAll() else return false end
- if not fs.exists(filePath) then
- local file = fs.open(filePath,"w")
- file.write(fileContent)
- file.close()
- return true
- else
- if term.isColor() then term.setTextColor(colors.red) end
- local wD,hT = term.getSize()
- local x,y = term.getCursorPos()
- term.setCursorPos(1,hT)
- term.write("File already exists. Overwrite? (y/n)")
- local overwrite = false
- while true do
- local ev,p1,p2,p3,p4,p5 = os.pullEvent()
- if ev == "char" and string.lower(p1) == "y" then
- overwrite = true
- break
- elseif ev == "char" and string.lower(p1) == "n" then
- overwrite = false
- break
- end
- end
- term.setCursorPos(1,hT)
- term.write(string.rep(" ",wD))
- term.setCursorPos(x,y)
- if overwrite then
- local file = fs.open(filePath,"w")
- file.write(fileContent)
- file.close()
- return true
- else return false end
- return false end
- end
- local function readRepository(url)
- local repository = http.get(url)
- if repository then repository = repository.readAll() else return false end
- repository = decode(repository)
- for k,v in pairs(repository) do
- if v["download_url"] then
- local success = nil
- --[[if string.sub(v["url"],1,70) == "https://api.github.com/repos/Saldor010/Ramuthras-Plane/contents/cobalt" or string.sub(v["url"],1,74) == "https://api.github.com/repos/Saldor010/Ramuthras-Plane/contents/cobalt-lib" or string.sub(v["url"],1,73) == "https://api.github.com/repos/Saldor010/Ramuthras-Plane/contents/cobalt-ui" then
- term.setCursorPos(math.floor(51/2)-math.floor(string.len(v["path"])/2),8)
- term.write(pathToInstall..v["path"])
- success = downloadFile(v["download_url"],v["path"])
- else]]--
- if term.isColor() then term.setTextColor(128) end
- write("Downloading "..v["path"]..".. ")
- success = downloadFile(v["download_url"],pathToInstall..v["path"])
- if success then
- if term.isColor() then term.setTextColor(colors.lime) end
- print("Success")
- else
- if term.isColor() then term.setTextColor(colors.red) end
- print("Failed")
- end
- --end
- else
- readRepository(v["url"])
- end
- end
- end
- if not term.isColor() then
- print("Warning! The program you're about to download cannot be run on this computer. Proceed anyways? (y/n)")
- local proceed = false
- while true do
- local ev,p1,p2,p3,p4,p5 = os.pullEvent()
- if ev == "char" and string.lower(p1) == "y" then
- proceed = true
- break
- elseif ev == "char" and string.lower(p1) == "n" then
- proceed = false
- break
- end
- end
- if proceed == false then print("Download cancelled.") error() end
- end
- readRepository(github)
- if term.isColor() then term.setTextColor(colors.orange) end
- print("Download complete! Run "..pathToInstall.."coldwar.lua to start the game!")
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