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authorAndrew Lee <alee14498@protonmail.com>2020-11-15 13:44:30 -0500
committerAndrew Lee <alee14498@protonmail.com>2020-11-15 13:44:30 -0500
commit4e9920482018b652401ec0629ade381c70ae4d4b (patch)
tree8e27ce28c3ca4e75864b72f11574c3652cc1b93a /system/apis/json.lua
parentbcc38bf864e03522a37ec7a1dc1db953dbe7d473 (diff)
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Removed old system files
Diffstat (limited to 'system/apis/json.lua')
-rw-r--r--system/apis/json.lua209
1 files changed, 0 insertions, 209 deletions
diff --git a/system/apis/json.lua b/system/apis/json.lua
deleted file mode 100644
index 3bef482..0000000
--- a/system/apis/json.lua
+++ /dev/null
@@ -1,209 +0,0 @@
------------------------------------------------------------------- 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 \ No newline at end of file