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keeping quote chars and escape chars in text.tokenize for context in expandvars in shell

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This commit is contained in:
Florian Nücke 2014-02-17 21:21:11 +01:00
parent 1845ba0e17
commit edbc9fd44e
1 changed files with 6 additions and 11 deletions
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17
src/main/resources/assets/opencomputers/lua/rom/lib/text.lua
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@ -43,26 +43,22 @@ end
function text.tokenize(value)
checkArg(1, value, "string")
local tokens, token = {}, ""
local quoted, start, escaped = false, -1, false
local escaped, quoted, start = false, false, -1
for i = 1, unicode.len(value) do
local char = unicode.sub(value, i, i)
if escaped then -- escaped character
local f = load("return '\\" .. char .. "'")
if f then
local ok, f = pcall(f)
if ok then
char = f
end
end
escaped = false
token = token .. char
elseif char == "\\" and quoted ~= "'" then -- escape character?
escaped = true
token = token .. char
elseif char == quoted then -- end of quoted string
quoted = false
elseif char == "\\" then -- escape character?
escaped = true
token = token .. char
elseif (char == "'" or char == '"') and not quoted then
quoted = char
start = i
token = token .. char
elseif string.find(char, "%s") and not quoted then -- delimiter
if token ~= "" then
table.insert(tokens, token)
@ -70,7 +66,6 @@ function text.tokenize(value)
end
else -- normal char
token = token .. char
escaped = false
end
end
if quoted then