mirror of
https://github.com/vxcontrol/soldr-modules.git
synced 2026-07-19 21:43:31 -04:00
Aleksey Nikitin
30 lines
722 B
Lua
30 lines
722 B
Lua
local function show_output(s)
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local MAX_LENGTH = 1024
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s = string.gsub(s, "\n", "\\n")
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s = string.sub(s, 1, MAX_OUTPUT_LENGTH)
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return s
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end
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local function trim_end(s)
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return string.gsub(s, "%s+$", "")
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end
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-- Executes the given command in a shell.
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-- NOTE: stderr is redirecting to stdout.
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--:: string -> string?, err::string
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local function exec(cmd)
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local f = io.popen("exec 2>&1;" .. cmd)
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if not f then
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return false, string.format("exec: %q: io.popen returned nil", cmd, err)
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end
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local output = f:read("a") or ""
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local ok, status, code = f:close()
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if not ok then
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return false, string.format(
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"exec(%s): %s=%d: %s", cmd, status, code, show_output(output))
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end
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return trim_end(output)
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end
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return exec
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