1 files changed, 121 insertions, 0 deletions
diff --git a/fedora/.config/yazi/plugins/office.yazi/main.lua b/fedora/.config/yazi/plugins/office.yazi/main.lua
new file mode 100644
index 0000000..3ec7385
--- /dev/null
+++ b/fedora/.config/yazi/plugins/office.yazi/main.lua
@@ -0,0 +1,121 @@
+--- @since 25.2.7
+
+local M = {}
+
+function M:peek(job)
+	local start, cache = os.clock(), ya.file_cache(job)
+	if not cache then
+		return
+	end
+
+	local ok, err = self:preload(job)
+	if not ok or err then
+		return
+	end
+
+	ya.sleep(math.max(0, rt.preview.image_delay / 1000 + start - os.clock()))
+	ya.image_show(cache, job.area)
+	ya.preview_widgets(job, {})
+end
+
+function M:seek(job)
+	local h = cx.active.current.hovered
+	if h and h.url == job.file.url then
+		local step = ya.clamp(-1, job.units, 1)
+		ya.manager_emit("peek", { math.max(0, cx.active.preview.skip + step), only_if = job.file.url })
+	end
+end
+
+function M:doc2pdf(job)
+	local tmp = "/tmp/yazi-" .. ya.uid() .. "/" .. ya.hash("office.yazi") .. "/"
+
+	--[[	For Future Reference: Regarding `libreoffice` as preconverter
+	  1. It prints errors to stdout (always, doesn't matter if it succeeded or it failed)
+	  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)
+	  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)
+	  3.1 Regarding double quotes and Lua strings, see https://www.lua.org/manual/5.1/manual.html#2.1 --]]
+	local libreoffice = Command("libreoffice")
+		:arg({
+			"--headless",
+			"--convert-to",
+			"pdf:draw_pdf_Export:{"
+				.. '"PageRange":{'
+				.. '"type":"string",'
+				.. '"value":'
+				.. '"'
+				.. job.skip + 1
+				.. '"'
+				.. "}"
+				.. "}",
+			"--outdir",
+			tmp,
+			tostring(job.file.url),
+		})
+		:stdin(Command.NULL)
+		:stdout(Command.PIPED)
+		:stderr(Command.NULL)
+		:output()
+
+	if not libreoffice.status.success then
+		ya.err(
+			libreoffice.stdout:match("LibreOffice .+"):gsub("%\n.*", "")
+				.. " "
+				.. libreoffice.stdout:match("Error .+"):gsub("%\n.*", "")
+		)
+		return nil, Err("Failed to preconvert `%s` to a temporary PDF", job.file.name)
+	end
+
+	local tmp = tmp .. job.file.name:gsub("%.[^%.]+$", ".pdf")
+	local read_permission = io.open(tmp, "r")
+	if not read_permission then
+		return nil, Err("Failed to read `%s`: make sure file exists and have read access", tmp)
+	end
+	read_permission:close()
+
+	return tmp
+end
+
+function M:preload(job)
+	local cache = ya.file_cache(job)
+	if not cache or fs.cha(cache) then
+		return true
+	end
+
+	local tmp_pdf, err = self:doc2pdf(job)
+	if not tmp_pdf then
+		return true, Err("    " .. "%s", err)
+	end
+
+	local output, err = Command("pdftoppm")
+		:arg({
+			"-singlefile",
+			"-jpeg",
+			"-jpegopt",
+			"quality=" .. rt.preview.image_quality,
+			"-f",
+			1,
+			tostring(tmp_pdf),
+		})
+		:stdout(Command.PIPED)
+		:stderr(Command.PIPED)
+		:output()
+
+	local rm_tmp_pdf, rm_err = fs.remove("file", Url(tmp_pdf))
+	if not rm_tmp_pdf then
+		return true, Err("Failed to remove %s, error: %s", tmp_pdf, rm_err)
+	end
+
+	if not output then
+		return true, Err("Failed to start `pdftoppm`, error: %s", err)
+	elseif not output.status.success then
+		local pages = tonumber(output.stderr:match("the last page %((%d+)%)")) or 0
+		if job.skip > 0 and pages > 0 then
+			ya.mgr_emit("peek", { math.max(0, pages - 1), only_if = job.file.url, upper_bound = true })
+		end
+		return true, Err("Failed to convert %s to image, stderr: %s", tmp_pdf, output.stderr)
+	end
+
+	return fs.write(cache, output.stdout)
+end
+
+return M