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Correctly write YAML with special characters #73

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Correctly write YAML with special characters #73

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8 changes: 7 additions & 1 deletion src/lib/yaml/writer.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ function writer.write(filename, data, options)
return false, serialized
end

local indicators = "[-?:,%[%]{}#&*!|>'\"%%@`]" --A pattern that matches all yaml characters listed as indicators in the most recent standard, which could cause problems if simply blindly written in strings
function writer.serialize(data, options, depth, firstDepth)
options = options or {}
depth = depth or 0
Expand All @@ -39,7 +40,12 @@ function writer.serialize(data, options, depth, firstDepth)
local dataType = type(data)

if dataType == "string" then
-- TODO - Use quotes when needed
--use quotes as needed
if string.match(data, indicators) then
local out = string.gsub(data, "\\", "\\\\") --escape backslashes
out = string.gsub(out, "\"", "\\\"") --escape quotes. Not sure if the reader can correctly deal with escape sequences
return "\"" .. out .. "\""
end
return data

elseif dataType == "boolean" then
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