42 lines
924 B
Lua
42 lines
924 B
Lua
local M = {}
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function M:peek(job)
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local child, code = Command("lsar"):arg(tostring(job.file.url)):stdout(Command.PIPED):spawn()
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if not child then
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return ya.err("spawn `lsar` command returns " .. tostring(code))
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end
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-- Skip the first line which is the archive file itself
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while true do
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local _, event = child:read_line()
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if event == 0 or event ~= 1 then
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break
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end
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end
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local limit = job.area.h
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local i, lines = 0, {}
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repeat
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local next, event = child:read_line()
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if event ~= 0 then
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break
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end
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i = i + 1
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if i > job.skip then
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lines[#lines + 1] = next
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end
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until i >= job.skip + limit
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child:start_kill()
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if job.skip > 0 and i < job.skip + limit then
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ya.manager_emit("peek", { math.max(0, i - limit), only_if = job.file.url, upper_bound = true })
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else
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ya.preview_widgets(job, { ui.Text(lines):area(job.area) })
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end
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end
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function M:seek(job) require("code"):seek(job) end
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return M
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