mirror of
https://github.com/kristoferssolo/solorice.git
synced 2025-10-21 20:10:34 +00:00
115 lines
3.5 KiB
Lua
115 lines
3.5 KiB
Lua
--- @since 25.2.7
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local M = {}
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function M:peek(job)
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local start, cache = os.clock(), ya.file_cache(job)
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if not cache then
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return
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end
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local ok, err = self:preload(job)
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if not ok or err then
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return
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end
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ya.sleep(math.max(0, rt.preview.image_delay / 1000 + start - os.clock()))
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ya.image_show(cache, job.area)
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ya.preview_widgets(job, {})
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end
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function M:seek(job)
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local h = cx.active.current.hovered
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if h and h.url == job.file.url then
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local step = ya.clamp(-1, job.units, 1)
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ya.manager_emit("peek", { math.max(0, cx.active.preview.skip + step), only_if = job.file.url })
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end
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end
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function M:doc2pdf(job)
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local tmp = "/tmp/yazi-" .. ya.uid() .. "/" .. ya.hash("office.yazi") .. "/"
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--[[ For Future Reference: Regarding `libreoffice` as preconverter
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1. It prints errors to stdout (always, doesn't matter if it succeeded or it failed)
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2. Always writes the converted files to the filesystem, so no "Mario|Bros|Piping|Magic" for the data stream (https://ask.libreoffice.org/t/using-convert-to-output-to-stdout/38753)
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3. The `pdf:draw_pdf_Export` filter needs literal double quotes when defining its options (https://help.libreoffice.org/latest/en-US/text/shared/guide/pdf_params.html?&DbPAR=SHARED&System=UNIX#generaltext/shared/guide/pdf_params.xhp)
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3.1 Regarding double quotes and Lua strings, see https://www.lua.org/manual/5.1/manual.html#2.1 --]]
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local libreoffice = Command("libreoffice")
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:arg({
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"--headless",
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"--convert-to",
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'pdf:draw_pdf_Export:{"PageRange":{"type":"string","value":"' .. job.skip + 1 .. '"}}',
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"--outdir",
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tmp,
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tostring(job.file.url),
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})
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:stdin(Command.NULL)
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:stdout(Command.PIPED)
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:stderr(Command.PIPED)
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:output()
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if not libreoffice.status.success then
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local output = libreoffice.stdout .. libreoffice.stderr
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local version = (output:match("LibreOffice .+") or ""):gsub("%\n.*", "")
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local error = (output:match("Error:? .+") or ""):gsub("%\n.*", "")
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if version ~= "" or error ~= "" then
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ya.err((version or "LibreOffice") .. " " .. (error or "Unknown error"))
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end
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return nil, Err("Failed to preconvert `%s` to a temporary PDF", job.file.name)
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end
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local tmp = tmp .. job.file.name:gsub("%.[^%.]+$", ".pdf")
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local read_permission = io.open(tmp, "r")
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if not read_permission then
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return nil, Err("Failed to read `%s`: make sure file exists and have read access", tmp)
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end
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read_permission:close()
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return tmp
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end
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function M:preload(job)
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local cache = ya.file_cache(job)
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if not cache or fs.cha(cache) then
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return true
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end
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local tmp_pdf, err = self:doc2pdf(job)
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if not tmp_pdf then
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return true, Err(" " .. "%s", err)
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end
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local output, err = Command("pdftoppm")
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:arg({
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"-singlefile",
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"-jpeg",
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"-jpegopt",
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"quality=" .. rt.preview.image_quality,
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"-f",
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1,
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tostring(tmp_pdf),
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})
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:stdout(Command.PIPED)
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:stderr(Command.PIPED)
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:output()
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local rm_tmp_pdf, rm_err = fs.remove("file", Url(tmp_pdf))
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if not rm_tmp_pdf then
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return true, Err("Failed to remove %s, error: %s", tmp_pdf, rm_err)
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end
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if not output then
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return true, Err("Failed to start `pdftoppm`, error: %s", err)
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elseif not output.status.success then
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local pages = tonumber(output.stderr:match("the last page %((%d+)%)")) or 0
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if job.skip > 0 and pages > 0 then
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ya.mgr_emit("peek", { math.max(0, pages - 1), only_if = job.file.url, upper_bound = true })
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end
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return true, Err("Failed to convert %s to image, stderr: %s", tmp_pdf, output.stderr)
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end
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return fs.write(cache, output.stdout)
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end
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return M
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