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author Vas Crabb <vas@vastheman.com>2016-08-30 15:53:27 +1000
committer Vas Crabb <vas@vastheman.com>2016-08-30 15:53:27 +1000
commitf5356a62de25fa69d8299f3f5f4cc1dd80d6c1d7 (patch)
tree58fb91798c0c0335e53db2d3f9dc09bf226d72c6 /plugins/json/init.lua
parent234e91f9fbdd5add24c551048df017573116fb0a (diff)
srcclean on lua plugins, too
Diffstat (limited to 'plugins/json/init.lua')
-rw-r--r--plugins/json/init.lua680
1 files changed, 340 insertions, 340 deletions
diff --git a/plugins/json/init.lua b/plugins/json/init.lua
index 39f211c8e11..51b3e4772e3 100644
--- a/plugins/json/init.lua
+++ b/plugins/json/init.lua
@@ -61,12 +61,12 @@ SOFTWARE.
-- global dependencies:
local pairs, type, tostring, tonumber, getmetatable, setmetatable =
- pairs, type, tostring, tonumber, getmetatable, setmetatable
+ pairs, type, tostring, tonumber, getmetatable, setmetatable
local error, require, pcall, select = error, require, pcall, select
local floor, huge = math.floor, math.huge
local strrep, gsub, strsub, strbyte, strchar, strfind, strlen, strformat =
- string.rep, string.gsub, string.sub, string.byte, string.char,
- string.find, string.len, string.format
+ string.rep, string.gsub, string.sub, string.byte, string.char,
+ string.find, string.len, string.format
local strmatch = string.match
local concat = table.concat
@@ -93,23 +93,23 @@ json.null = setmetatable ({}, {
local function isarray (tbl)
local max, n, arraylen = 0, 0, 0
for k,v in pairs (tbl) do
- if k == 'n' and type(v) == 'number' then
- arraylen = v
- if v > max then
- max = v
- end
- else
- if type(k) ~= 'number' or k < 1 or floor(k) ~= k then
- return false
- end
- if k > max then
- max = k
- end
- n = n + 1
- end
+ if k == 'n' and type(v) == 'number' then
+ arraylen = v
+ if v > max then
+ max = v
+ end
+ else
+ if type(k) ~= 'number' or k < 1 or floor(k) ~= k then
+ return false
+ end
+ if k > max then
+ max = k
+ end
+ n = n + 1
+ end
end
if max > 10 and max > arraylen and max > n * 2 then
- return false -- don't create an array with too many holes
+ return false -- don't create an array with too many holes
end
return true, max
end
@@ -122,30 +122,30 @@ local escapecodes = {
local function escapeutf8 (uchar)
local value = escapecodes[uchar]
if value then
- return value
+ return value
end
local a, b, c, d = strbyte (uchar, 1, 4)
a, b, c, d = a or 0, b or 0, c or 0, d or 0
if a <= 0x7f then
- value = a
+ value = a
elseif 0xc0 <= a and a <= 0xdf and b >= 0x80 then
- value = (a - 0xc0) * 0x40 + b - 0x80
+ value = (a - 0xc0) * 0x40 + b - 0x80
elseif 0xe0 <= a and a <= 0xef and b >= 0x80 and c >= 0x80 then
- value = ((a - 0xe0) * 0x40 + b - 0x80) * 0x40 + c - 0x80
+ value = ((a - 0xe0) * 0x40 + b - 0x80) * 0x40 + c - 0x80
elseif 0xf0 <= a and a <= 0xf7 and b >= 0x80 and c >= 0x80 and d >= 0x80 then
- value = (((a - 0xf0) * 0x40 + b - 0x80) * 0x40 + c - 0x80) * 0x40 + d - 0x80
+ value = (((a - 0xf0) * 0x40 + b - 0x80) * 0x40 + c - 0x80) * 0x40 + d - 0x80
else
- return ""
+ return ""
end
if value <= 0xffff then
- return strformat ("\\u%.4x", value)
+ return strformat ("\\u%.4x", value)
elseif value <= 0x10ffff then
- -- encode as UTF-16 surrogate pair
- value = value - 0x10000
- local highsur, lowsur = 0xD800 + floor (value/0x400), 0xDC00 + (value % 0x400)
- return strformat ("\\u%.4x\\u%.4x", highsur, lowsur)
+ -- encode as UTF-16 surrogate pair
+ value = value - 0x10000
+ local highsur, lowsur = 0xD800 + floor (value/0x400), 0xDC00 + (value % 0x400)
+ return strformat ("\\u%.4x\\u%.4x", highsur, lowsur)
else
- return ""
+ return ""
end
end
@@ -154,9 +154,9 @@ local function fsub (str, pattern, repl)
-- exists. First using find should be more efficient when most strings
-- don't contain the pattern.
if strfind (str, pattern) then
- return gsub (str, pattern, repl)
+ return gsub (str, pattern, repl)
else
- return str
+ return str
end
end
@@ -164,14 +164,14 @@ local function quotestring (value)
-- based on the regexp "escapable" in https://github.com/douglascrockford/JSON-js
value = fsub (value, "[%z\1-\31\"\\\127]", escapeutf8)
if strfind (value, "[\194\216\220\225\226\239]") then
- value = fsub (value, "\194[\128-\159\173]", escapeutf8)
- value = fsub (value, "\216[\128-\132]", escapeutf8)
- value = fsub (value, "\220\143", escapeutf8)
- value = fsub (value, "\225\158[\180\181]", escapeutf8)
- value = fsub (value, "\226\128[\140-\143\168-\175]", escapeutf8)
- value = fsub (value, "\226\129[\160-\175]", escapeutf8)
- value = fsub (value, "\239\187\191", escapeutf8)
- value = fsub (value, "\239\191[\176-\191]", escapeutf8)
+ value = fsub (value, "\194[\128-\159\173]", escapeutf8)
+ value = fsub (value, "\216[\128-\132]", escapeutf8)
+ value = fsub (value, "\220\143", escapeutf8)
+ value = fsub (value, "\225\158[\180\181]", escapeutf8)
+ value = fsub (value, "\226\128[\140-\143\168-\175]", escapeutf8)
+ value = fsub (value, "\226\129[\160-\175]", escapeutf8)
+ value = fsub (value, "\239\187\191", escapeutf8)
+ value = fsub (value, "\239\191[\176-\191]", escapeutf8)
end
return "\"" .. value .. "\""
end
@@ -180,9 +180,9 @@ json.quotestring = quotestring
local function replace(str, o, n)
local i, j = strfind (str, o, 1, true)
if i then
- return strsub(str, 1, i-1) .. n .. strsub(str, j+1, -1)
+ return strsub(str, 1, i-1) .. n .. strsub(str, j+1, -1)
else
- return str
+ return str
end
end
@@ -204,8 +204,8 @@ end
local function str2num (str)
local num = tonumber(replace(str, ".", decpoint))
if not num then
- updatedecpoint()
- num = tonumber(replace(str, ".", decpoint))
+ updatedecpoint()
+ num = tonumber(replace(str, ".", decpoint))
end
return num
end
@@ -219,8 +219,8 @@ end
function json.addnewline (state)
if state.indent then
- state.bufferlen = addnewline2 (state.level or 0,
- state.buffer, state.bufferlen or #(state.buffer))
+ state.bufferlen = addnewline2 (state.level or 0,
+ state.buffer, state.bufferlen or #(state.buffer))
end
end
@@ -229,14 +229,14 @@ local encode2 -- forward declaration
local function addpair (key, value, prev, indent, level, buffer, buflen, tables, globalorder, state)
local kt = type (key)
if kt ~= 'string' and kt ~= 'number' then
- return nil, "type '" .. kt .. "' is not supported as a key by JSON."
+ return nil, "type '" .. kt .. "' is not supported as a key by JSON."
end
if prev then
- buflen = buflen + 1
- buffer[buflen] = ","
+ buflen = buflen + 1
+ buffer[buflen] = ","
end
if indent then
- buflen = addnewline2 (level, buffer, buflen)
+ buflen = addnewline2 (level, buffer, buflen)
end
buffer[buflen+1] = quotestring (key)
buffer[buflen+2] = ":"
@@ -246,8 +246,8 @@ end
local function appendcustom(res, buffer, state)
local buflen = state.bufferlen
if type (res) == 'string' then
- buflen = buflen + 1
- buffer[buflen] = res
+ buflen = buflen + 1
+ buffer[buflen] = res
end
return buflen
end
@@ -256,12 +256,12 @@ local function exception(reason, value, state, buffer, buflen, defaultmessage)
defaultmessage = defaultmessage or reason
local handler = state.exception
if not handler then
- return nil, defaultmessage
+ return nil, defaultmessage
else
- state.bufferlen = buflen
- local ret, msg = handler (reason, value, state, defaultmessage)
- if not ret then return nil, msg or defaultmessage end
- return appendcustom(ret, buffer, state)
+ state.bufferlen = buflen
+ local ret, msg = handler (reason, value, state, defaultmessage)
+ if not ret then return nil, msg or defaultmessage end
+ return appendcustom(ret, buffer, state)
end
end
@@ -275,100 +275,100 @@ encode2 = function (value, indent, level, buffer, buflen, tables, globalorder, s
valmeta = type (valmeta) == 'table' and valmeta -- only tables
local valtojson = valmeta and valmeta.__tojson
if valtojson then
- if tables[value] then
- return exception('reference cycle', value, state, buffer, buflen)
- end
- tables[value] = true
- state.bufferlen = buflen
- local ret, msg = valtojson (value, state)
- if not ret then return exception('custom encoder failed', value, state, buffer, buflen, msg) end
- tables[value] = nil
- buflen = appendcustom(ret, buffer, state)
+ if tables[value] then
+ return exception('reference cycle', value, state, buffer, buflen)
+ end
+ tables[value] = true
+ state.bufferlen = buflen
+ local ret, msg = valtojson (value, state)
+ if not ret then return exception('custom encoder failed', value, state, buffer, buflen, msg) end
+ tables[value] = nil
+ buflen = appendcustom(ret, buffer, state)
elseif value == nil then
- buflen = buflen + 1
- buffer[buflen] = "null"
+ buflen = buflen + 1
+ buffer[buflen] = "null"
elseif valtype == 'number' then
- local s
- if value ~= value or value >= huge or -value >= huge then
- -- This is the behaviour of the original JSON implementation.
- s = "null"
- else
- s = num2str (value)
- end
- buflen = buflen + 1
- buffer[buflen] = s
+ local s
+ if value ~= value or value >= huge or -value >= huge then
+ -- This is the behaviour of the original JSON implementation.
+ s = "null"
+ else
+ s = num2str (value)
+ end
+ buflen = buflen + 1
+ buffer[buflen] = s
elseif valtype == 'boolean' then
- buflen = buflen + 1
- buffer[buflen] = value and "true" or "false"
+ buflen = buflen + 1
+ buffer[buflen] = value and "true" or "false"
elseif valtype == 'string' then
- buflen = buflen + 1
- buffer[buflen] = quotestring (value)
+ buflen = buflen + 1
+ buffer[buflen] = quotestring (value)
elseif valtype == 'table' then
- if tables[value] then
- return exception('reference cycle', value, state, buffer, buflen)
- end
- tables[value] = true
- level = level + 1
- local isa, n = isarray (value)
- if n == 0 and valmeta and valmeta.__jsontype == 'object' then
- isa = false
- end
- local msg
- if isa then -- JSON array
- buflen = buflen + 1
- buffer[buflen] = "["
- for i = 1, n do
- buflen, msg = encode2 (value[i], indent, level, buffer, buflen, tables, globalorder, state)
- if not buflen then return nil, msg end
- if i < n then
- buflen = buflen + 1
- buffer[buflen] = ","
- end
- end
- buflen = buflen + 1
- buffer[buflen] = "]"
- else -- JSON object
- local prev = false
- buflen = buflen + 1
- buffer[buflen] = "{"
- local order = valmeta and valmeta.__jsonorder or globalorder
- if order then
- local used = {}
- n = #order
- for i = 1, n do
- local k = order[i]
- local v = value[k]
- local _
- if v then
- used[k] = true
- buflen, _ = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
- prev = true -- add a seperator before the next element
- end
- end
- for k,v in pairs (value) do
- if not used[k] then
- buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
- if not buflen then return nil, msg end
- prev = true -- add a seperator before the next element
- end
- end
- else -- unordered
- for k,v in pairs (value) do
- buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
- if not buflen then return nil, msg end
- prev = true -- add a seperator before the next element
- end
- end
- if indent then
- buflen = addnewline2 (level - 1, buffer, buflen)
- end
- buflen = buflen + 1
- buffer[buflen] = "}"
- end
- tables[value] = nil
+ if tables[value] then
+ return exception('reference cycle', value, state, buffer, buflen)
+ end
+ tables[value] = true
+ level = level + 1
+ local isa, n = isarray (value)
+ if n == 0 and valmeta and valmeta.__jsontype == 'object' then
+ isa = false
+ end
+ local msg
+ if isa then -- JSON array
+ buflen = buflen + 1
+ buffer[buflen] = "["
+ for i = 1, n do
+ buflen, msg = encode2 (value[i], indent, level, buffer, buflen, tables, globalorder, state)
+ if not buflen then return nil, msg end
+ if i < n then
+ buflen = buflen + 1
+ buffer[buflen] = ","
+ end
+ end
+ buflen = buflen + 1
+ buffer[buflen] = "]"
+ else -- JSON object
+ local prev = false
+ buflen = buflen + 1
+ buffer[buflen] = "{"
+ local order = valmeta and valmeta.__jsonorder or globalorder
+ if order then
+ local used = {}
+ n = #order
+ for i = 1, n do
+ local k = order[i]
+ local v = value[k]
+ local _
+ if v then
+ used[k] = true
+ buflen, _ = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
+ prev = true -- add a seperator before the next element
+ end
+ end
+ for k,v in pairs (value) do
+ if not used[k] then
+ buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
+ if not buflen then return nil, msg end
+ prev = true -- add a seperator before the next element
+ end
+ end
+ else -- unordered
+ for k,v in pairs (value) do
+ buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
+ if not buflen then return nil, msg end
+ prev = true -- add a seperator before the next element
+ end
+ end
+ if indent then
+ buflen = addnewline2 (level - 1, buffer, buflen)
+ end
+ buflen = buflen + 1
+ buffer[buflen] = "}"
+ end
+ tables[value] = nil
else
- return exception ('unsupported type', value, state, buffer, buflen,
- "type '" .. valtype .. "' is not supported by JSON.")
+ return exception ('unsupported type', value, state, buffer, buflen,
+ "type '" .. valtype .. "' is not supported by JSON.")
end
return buflen
end
@@ -380,30 +380,30 @@ function json.encode (value, state)
state.buffer = buffer
updatedecpoint()
local ret, msg = encode2 (value, state.indent, state.level or 0,
- buffer, state.bufferlen or 0, state.tables or {}, state.keyorder, state)
+ buffer, state.bufferlen or 0, state.tables or {}, state.keyorder, state)
if not ret then
- error (msg, 2)
+ error (msg, 2)
elseif oldbuffer == buffer then
- state.bufferlen = ret
- return true
+ state.bufferlen = ret
+ return true
else
- state.bufferlen = nil
- state.buffer = nil
- return concat (buffer)
+ state.bufferlen = nil
+ state.buffer = nil
+ return concat (buffer)
end
end
local function loc (str, where)
local line, pos, linepos = 1, 1, 0
while true do
- pos = strfind (str, "\n", pos, true)
- if pos and pos < where then
- line = line + 1
- linepos = pos
- pos = pos + 1
- else
- break
- end
+ pos = strfind (str, "\n", pos, true)
+ if pos and pos < where then
+ line = line + 1
+ linepos = pos
+ pos = pos + 1
+ else
+ break
+ end
end
return "line " .. line .. ", column " .. (where - linepos)
end
@@ -414,22 +414,22 @@ end
local function scanwhite (str, pos)
while true do
- pos = strfind (str, "%S", pos)
- if not pos then return nil end
- local sub2 = strsub (str, pos, pos + 1)
- if sub2 == "\239\187" and strsub (str, pos + 2, pos + 2) == "\191" then
- -- UTF-8 Byte Order Mark
- pos = pos + 3
- elseif sub2 == "//" then
- pos = strfind (str, "[\n\r]", pos + 2)
- if not pos then return nil end
- elseif sub2 == "/*" then
- pos = strfind (str, "*/", pos + 2)
- if not pos then return nil end
- pos = pos + 2
- else
- return pos
- end
+ pos = strfind (str, "%S", pos)
+ if not pos then return nil end
+ local sub2 = strsub (str, pos, pos + 1)
+ if sub2 == "\239\187" and strsub (str, pos + 2, pos + 2) == "\191" then
+ -- UTF-8 Byte Order Mark
+ pos = pos + 3
+ elseif sub2 == "//" then
+ pos = strfind (str, "[\n\r]", pos + 2)
+ if not pos then return nil end
+ elseif sub2 == "/*" then
+ pos = strfind (str, "*/", pos + 2)
+ if not pos then return nil end
+ pos = pos + 2
+ else
+ return pos
+ end
end
end
@@ -440,23 +440,23 @@ local escapechars = {
local function unichar (value)
if value < 0 then
- return nil
+ return nil
elseif value <= 0x007f then
- return strchar (value)
+ return strchar (value)
elseif value <= 0x07ff then
- return strchar (0xc0 + floor(value/0x40),
- 0x80 + (floor(value) % 0x40))
+ return strchar (0xc0 + floor(value/0x40),
+ 0x80 + (floor(value) % 0x40))
elseif value <= 0xffff then
- return strchar (0xe0 + floor(value/0x1000),
- 0x80 + (floor(value/0x40) % 0x40),
- 0x80 + (floor(value) % 0x40))
+ return strchar (0xe0 + floor(value/0x1000),
+ 0x80 + (floor(value/0x40) % 0x40),
+ 0x80 + (floor(value) % 0x40))
elseif value <= 0x10ffff then
- return strchar (0xf0 + floor(value/0x40000),
- 0x80 + (floor(value/0x1000) % 0x40),
- 0x80 + (floor(value/0x40) % 0x40),
- 0x80 + (floor(value) % 0x40))
+ return strchar (0xf0 + floor(value/0x40000),
+ 0x80 + (floor(value/0x1000) % 0x40),
+ 0x80 + (floor(value/0x40) % 0x40),
+ 0x80 + (floor(value) % 0x40))
else
- return nil
+ return nil
end
end
@@ -464,60 +464,60 @@ local function scanstring (str, pos)
local lastpos = pos + 1
local buffer, n = {}, 0
while true do
- local nextpos = strfind (str, "[\"\\]", lastpos)
- if not nextpos then
- return unterminated (str, "string", pos)
- end
- if nextpos > lastpos then
- n = n + 1
- buffer[n] = strsub (str, lastpos, nextpos - 1)
- end
- if strsub (str, nextpos, nextpos) == "\"" then
- lastpos = nextpos + 1
- break
- else
- local escchar = strsub (str, nextpos + 1, nextpos + 1)
- local value
- if escchar == "u" then
- value = tonumber (strsub (str, nextpos + 2, nextpos + 5), 16)
- if value then
- local value2
- if 0xD800 <= value and value <= 0xDBff then
- -- we have the high surrogate of UTF-16. Check if there is a
- -- low surrogate escaped nearby to combine them.
- if strsub (str, nextpos + 6, nextpos + 7) == "\\u" then
- value2 = tonumber (strsub (str, nextpos + 8, nextpos + 11), 16)
- if value2 and 0xDC00 <= value2 and value2 <= 0xDFFF then
- value = (value - 0xD800) * 0x400 + (value2 - 0xDC00) + 0x10000
- else
- value2 = nil -- in case it was out of range for a low surrogate
- end
- end
- end
- value = value and unichar (value)
- if value then
- if value2 then
- lastpos = nextpos + 12
- else
- lastpos = nextpos + 6
- end
- end
- end
- end
- if not value then
- value = escapechars[escchar] or escchar
- lastpos = nextpos + 2
- end
- n = n + 1
- buffer[n] = value
- end
+ local nextpos = strfind (str, "[\"\\]", lastpos)
+ if not nextpos then
+ return unterminated (str, "string", pos)
+ end
+ if nextpos > lastpos then
+ n = n + 1
+ buffer[n] = strsub (str, lastpos, nextpos - 1)
+ end
+ if strsub (str, nextpos, nextpos) == "\"" then
+ lastpos = nextpos + 1
+ break
+ else
+ local escchar = strsub (str, nextpos + 1, nextpos + 1)
+ local value
+ if escchar == "u" then
+ value = tonumber (strsub (str, nextpos + 2, nextpos + 5), 16)
+ if value then
+ local value2
+ if 0xD800 <= value and value <= 0xDBff then
+ -- we have the high surrogate of UTF-16. Check if there is a
+ -- low surrogate escaped nearby to combine them.
+ if strsub (str, nextpos + 6, nextpos + 7) == "\\u" then
+ value2 = tonumber (strsub (str, nextpos + 8, nextpos + 11), 16)
+ if value2 and 0xDC00 <= value2 and value2 <= 0xDFFF then
+ value = (value - 0xD800) * 0x400 + (value2 - 0xDC00) + 0x10000
+ else
+ value2 = nil -- in case it was out of range for a low surrogate
+ end
+ end
+ end
+ value = value and unichar (value)
+ if value then
+ if value2 then
+ lastpos = nextpos + 12
+ else
+ lastpos = nextpos + 6
+ end
+ end
+ end
+ end
+ if not value then
+ value = escapechars[escchar] or escchar
+ lastpos = nextpos + 2
+ end
+ n = n + 1
+ buffer[n] = value
+ end
end
if n == 1 then
- return buffer[1], lastpos
+ return buffer[1], lastpos
elseif n > 1 then
- return concat (buffer), lastpos
+ return concat (buffer), lastpos
else
- return "", lastpos
+ return "", lastpos
end
end
@@ -527,43 +527,43 @@ local function scantable (what, closechar, str, startpos, nullval, objectmeta, a
local tbl, n = {}, 0
local pos = startpos + 1
if what == 'object' then
- setmetatable (tbl, objectmeta)
+ setmetatable (tbl, objectmeta)
else
- setmetatable (tbl, arraymeta)
+ setmetatable (tbl, arraymeta)
end
while true do
- pos = scanwhite (str, pos)
- if not pos then return unterminated (str, what, startpos) end
- local char = strsub (str, pos, pos)
- if char == closechar then
- return tbl, pos + 1
- end
- local val1, err
- val1, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
- if err then return nil, pos, err end
- pos = scanwhite (str, pos)
- if not pos then return unterminated (str, what, startpos) end
- char = strsub (str, pos, pos)
- if char == ":" then
- if val1 == nil then
- return nil, pos, "cannot use nil as table index (at " .. loc (str, pos) .. ")"
- end
- pos = scanwhite (str, pos + 1)
- if not pos then return unterminated (str, what, startpos) end
- local val2
- val2, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
- if err then return nil, pos, err end
- tbl[val1] = val2
- pos = scanwhite (str, pos)
- if not pos then return unterminated (str, what, startpos) end
- char = strsub (str, pos, pos)
- else
- n = n + 1
- tbl[n] = val1
- end
- if char == "," then
- pos = pos + 1
- end
+ pos = scanwhite (str, pos)
+ if not pos then return unterminated (str, what, startpos) end
+ local char = strsub (str, pos, pos)
+ if char == closechar then
+ return tbl, pos + 1
+ end
+ local val1, err
+ val1, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
+ if err then return nil, pos, err end
+ pos = scanwhite (str, pos)
+ if not pos then return unterminated (str, what, startpos) end
+ char = strsub (str, pos, pos)
+ if char == ":" then
+ if val1 == nil then
+ return nil, pos, "cannot use nil as table index (at " .. loc (str, pos) .. ")"
+ end
+ pos = scanwhite (str, pos + 1)
+ if not pos then return unterminated (str, what, startpos) end
+ local val2
+ val2, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
+ if err then return nil, pos, err end
+ tbl[val1] = val2
+ pos = scanwhite (str, pos)
+ if not pos then return unterminated (str, what, startpos) end
+ char = strsub (str, pos, pos)
+ else
+ n = n + 1
+ tbl[n] = val1
+ end
+ if char == "," then
+ pos = pos + 1
+ end
end
end
@@ -571,43 +571,43 @@ scanvalue = function (str, pos, nullval, objectmeta, arraymeta)
pos = pos or 1
pos = scanwhite (str, pos)
if not pos then
- return nil, strlen (str) + 1, "no valid JSON value (reached the end)"
+ return nil, strlen (str) + 1, "no valid JSON value (reached the end)"
end
local char = strsub (str, pos, pos)
if char == "{" then
- return scantable ('object', "}", str, pos, nullval, objectmeta, arraymeta)
+ return scantable ('object', "}", str, pos, nullval, objectmeta, arraymeta)
elseif char == "[" then
- return scantable ('array', "]", str, pos, nullval, objectmeta, arraymeta)
+ return scantable ('array', "]", str, pos, nullval, objectmeta, arraymeta)
elseif char == "\"" then
- return scanstring (str, pos)
+ return scanstring (str, pos)
else
- local pstart, pend = strfind (str, "^%-?[%d%.]+[eE]?[%+%-]?%d*", pos)
- if pstart then
- local number = str2num (strsub (str, pstart, pend))
- if number then
- return number, pend + 1
- end
- end
- pstart, pend = strfind (str, "^%a%w*", pos)
- if pstart then
- local name = strsub (str, pstart, pend)
- if name == "true" then
- return true, pend + 1
- elseif name == "false" then
- return false, pend + 1
- elseif name == "null" then
- return nullval, pend + 1
- end
- end
- return nil, pos, "no valid JSON value at " .. loc (str, pos)
+ local pstart, pend = strfind (str, "^%-?[%d%.]+[eE]?[%+%-]?%d*", pos)
+ if pstart then
+ local number = str2num (strsub (str, pstart, pend))
+ if number then
+ return number, pend + 1
+ end
+ end
+ pstart, pend = strfind (str, "^%a%w*", pos)
+ if pstart then
+ local name = strsub (str, pstart, pend)
+ if name == "true" then
+ return true, pend + 1
+ elseif name == "false" then
+ return false, pend + 1
+ elseif name == "null" then
+ return nullval, pend + 1
+ end
+ end
+ return nil, pos, "no valid JSON value at " .. loc (str, pos)
end
end
local function optionalmetatables(...)
if select("#", ...) > 0 then
- return ...
+ return ...
else
- return {__jsontype = 'object'}, {__jsontype = 'array'}
+ return {__jsontype = 'object'}, {__jsontype = 'array'}
end
end
@@ -620,22 +620,22 @@ function json.use_lpeg ()
local g = require ("lpeg")
if g.version() == "0.11" then
- error "due to a bug in LPeg 0.11, it cannot be used for JSON matching"
+ error "due to a bug in LPeg 0.11, it cannot be used for JSON matching"
end
local pegmatch = g.match
local P, S, R = g.P, g.S, g.R
local function ErrorCall (str, pos, msg, state)
- if not state.msg then
- state.msg = msg .. " at " .. loc (str, pos)
- state.pos = pos
- end
- return false
+ if not state.msg then
+ state.msg = msg .. " at " .. loc (str, pos)
+ state.pos = pos
+ end
+ return false
end
local function Err (msg)
- return g.Cmt (g.Cc (msg) * g.Carg (2), ErrorCall)
+ return g.Cmt (g.Cc (msg) * g.Carg (2), ErrorCall)
end
local SingleLineComment = P"//" * (1 - S"\n\r")^0
@@ -646,15 +646,15 @@ function json.use_lpeg ()
local EscapeSequence = (P"\\" * g.C (S"\"\\/bfnrt" + Err "unsupported escape sequence")) / escapechars
local HexDigit = R("09", "af", "AF")
local function UTF16Surrogate (match, pos, high, low)
- high, low = tonumber (high, 16), tonumber (low, 16)
- if 0xD800 <= high and high <= 0xDBff and 0xDC00 <= low and low <= 0xDFFF then
- return true, unichar ((high - 0xD800) * 0x400 + (low - 0xDC00) + 0x10000)
- else
- return false
- end
+ high, low = tonumber (high, 16), tonumber (low, 16)
+ if 0xD800 <= high and high <= 0xDBff and 0xDC00 <= low and low <= 0xDFFF then
+ return true, unichar ((high - 0xD800) * 0x400 + (low - 0xDC00) + 0x10000)
+ else
+ return false
+ end
end
local function UTF16BMP (hex)
- return unichar (tonumber (hex, 16))
+ return unichar (tonumber (hex, 16))
end
local U16Sequence = (P"\\u" * g.C (HexDigit * HexDigit * HexDigit * HexDigit))
local UnicodeEscape = g.Cmt (U16Sequence * U16Sequence, UTF16Surrogate) + U16Sequence/UTF16BMP
@@ -671,30 +671,30 @@ function json.use_lpeg ()
-- The functions parsearray and parseobject parse only a single value/pair
-- at a time and store them directly to avoid hitting the LPeg limits.
local function parsearray (str, pos, nullval, state)
- local obj, cont
- local npos
- local t, nt = {}, 0
- repeat
- obj, cont, npos = pegmatch (ArrayContent, str, pos, nullval, state)
- if not npos then break end
- pos = npos
- nt = nt + 1
- t[nt] = obj
- until cont == 'last'
- return pos, setmetatable (t, state.arraymeta)
+ local obj, cont
+ local npos
+ local t, nt = {}, 0
+ repeat
+ obj, cont, npos = pegmatch (ArrayContent, str, pos, nullval, state)
+ if not npos then break end
+ pos = npos
+ nt = nt + 1
+ t[nt] = obj
+ until cont == 'last'
+ return pos, setmetatable (t, state.arraymeta)
end
local function parseobject (str, pos, nullval, state)
- local obj, key, cont
- local npos
- local t = {}
- repeat
- key, obj, cont, npos = pegmatch (ObjectContent, str, pos, nullval, state)
- if not npos then break end
- pos = npos
- t[key] = obj
- until cont == 'last'
- return pos, setmetatable (t, state.objectmeta)
+ local obj, key, cont
+ local npos
+ local t = {}
+ repeat
+ key, obj, cont, npos = pegmatch (ObjectContent, str, pos, nullval, state)
+ if not npos then break end
+ pos = npos
+ t[key] = obj
+ until cont == 'last'
+ return pos, setmetatable (t, state.objectmeta)
end
local Array = P"[" * g.Cmt (g.Carg(1) * g.Carg(2), parsearray) * Space * (P"]" + Err "']' expected")
@@ -707,14 +707,14 @@ function json.use_lpeg ()
local DecodeValue = ExpectedValue * g.Cp ()
function json.decode (str, pos, nullval, ...)
- local state = {}
- state.objectmeta, state.arraymeta = optionalmetatables(...)
- local obj, retpos = pegmatch (DecodeValue, str, pos, nullval, state)
- if state.msg then
- return nil, state.pos, state.msg
- else
- return obj, retpos
- end
+ local state = {}
+ state.objectmeta, state.arraymeta = optionalmetatables(...)
+ local obj, retpos = pegmatch (DecodeValue, str, pos, nullval, state)
+ if state.msg then
+ return nil, state.pos, state.msg
+ else
+ return obj, retpos
+ end
end
-- use this function only once: