mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-11-09 00:43:48 +01:00
73 lines
2.0 KiB
Lua
73 lines
2.0 KiB
Lua
|
function is_whitespace(char)
|
||
|
|
return char == " " or char == "\t" or char == "\r" or char == "\n"
|
||
|
|
end
|
||
|
|
|
||
|
|
function split_shell(text)
|
||
|
|
local text_length = #text
|
||
|
|
local scan_pos = 1
|
||
|
|
local result = { }
|
||
|
|
local acc = {}
|
||
|
|
local mode = "NORMAL" -- NORMAL, INSIDE_QUOTES_SINGLE, INSIDE_QUOTES_DOUBLE
|
||
|
|
|
||
|
|
|
||
|
|
for i=1,text_length do
|
||
|
|
local prevchar = ""
|
||
|
|
local curchar = text:sub(i,i)
|
||
|
|
local nextchar = ""
|
||
|
|
local nextnextchar = ""
|
||
|
|
if i > 1 then prevchar = text:sub(i-1, i-1) end
|
||
|
|
if i < text_length then nextchar = text:sub(i+1, i+1) end
|
||
|
|
if i+1 < text_length then nextnextchar = text:sub(i+2, i+2) end
|
||
|
|
|
||
|
|
if mode == "NORMAL" then
|
||
|
|
if is_whitespace(curchar) and #acc > 0 then
|
||
|
|
table.insert(result, table.concat(acc, ""))
|
||
|
|
acc = {}
|
||
|
|
elseif (curchar == "\"" or curchar == "'") and #acc == 0 and prevchar ~= "\\" then
|
||
|
|
if curchar == "\"" then
|
||
|
|
mode = "INSIDE_QUOTES_DOUBLE"
|
||
|
|
else
|
||
|
|
mode = "INSIDE_QUOTES_SINGLE"
|
||
|
|
end
|
||
|
|
else
|
||
|
|
table.insert(acc, curchar)
|
||
|
|
end
|
||
|
|
elseif mode == "INSIDE_QUOTES_DOUBLE" then
|
||
|
|
if curchar == "\"" and prevchar ~= "\\" and is_whitespace(nextchar) then
|
||
|
|
-- It's the end of a quote!
|
||
|
|
mode = "NORMAL"
|
||
|
|
elseif (curchar == "\\" and nextchar ~= "\"" and not is_whitespace(nextnextchar)) or curchar ~= "\\" then
|
||
|
|
-- It's a regular character
|
||
|
|
table.insert(acc, curchar)
|
||
|
|
end
|
||
|
|
elseif mode == "INSIDE_QUOTES_SINGLE" then
|
||
|
|
if curchar == "'" and prevchar ~= "\\" and is_whitespace(nextchar) then
|
||
|
|
-- It's the end of a quote!
|
||
|
|
mode = "NORMAL"
|
||
|
|
elseif (curchar == "\\" and nextchar ~= "'" and not is_whitespace(nextnextchar)) or curchar ~= "\\" then
|
||
|
|
-- It's a regular character
|
||
|
|
table.insert(acc, curchar)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
if #acc > 0 then
|
||
|
|
table.insert(result, table.concat(acc, ""))
|
||
|
|
end
|
||
|
|
return result
|
||
|
|
end
|
||
|
|
|
||
|
|
function test(text)
|
||
|
|
print("Source", text)
|
||
|
|
for i,value in ipairs(split_shell(text)) do
|
||
|
|
print("i", i, "→", value)
|
||
|
|
end
|
||
|
|
print("************")
|
||
|
|
end
|
||
|
|
|
||
|
|
test("yay yay yay")
|
||
|
|
test("yay \"yay yay\" yay")
|
||
|
|
test("yay \"yay\\\" yay\" yay")
|
||
|
|
test("yay \"yay 'inside quotes' yay\" yay")
|
||
|
|
test("yay 'inside quotes' another")
|