mirror of
https://github.com/vxcontrol/soldr-modules.git
synced 2026-07-19 13:33:58 -04:00
Aleksey Nikitin
31 lines
767 B
Lua
31 lines
767 B
Lua
local try = require "try"
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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_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 -> output::string?, err::string?
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local function exec(cmd)
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local result, err = try(function()
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local stdout = assert(
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io.popen("exec <&- 2>&1;"..cmd), "io.popen failed")
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local output = stdout:read("a") or ""
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local ok, status, code = stdout:close()
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assert(ok,
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string.format("%s=%d: %s", status, code, show_output(output)))
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return trim_end(output)
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end)
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return result, string.format("exec(%s): %s", cmd, err)
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end
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return exec
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