lua: docs: condense the PCI example

Signed-off-by: Ferenc Wágner <wferi@niif.hu>

1 files changed, 6 insertions, 29 deletions

diff --git a/com32/lua/doc/syslinux.asc b/com32/lua/doc/syslinux.asc
index dac8cee3..87dbb662 100644
--- a/com32/lua/doc/syslinux.asc
+++ b/com32/lua/doc/syslinux.asc
@@ -199,38 +199,15 @@ _Example_:
 ......................................................
 local pci = require "pci"
 
--- get nice output
-printf = function(s,...)
-           return io.write(s:format(...))
-         end
-
--- get device info
-pciinfo = pci.getinfo()
-
--- get plain text device description
 pciids = pci.getidlist("/pci.ids")
 
--- list all pci busses
-for dind,device in pairs(pciinfo) do
-
-  -- search for device description
-  search = string.format("%04x%04x", device.vendor, device.product)
-
-  printf(" %04x:%04x:%04x:%04x = ", device.vendor, device.product,
-			device.sub_vendor, device.sub_product)
-
-  if ( pciids[search] ) then
-         printf("%s\n", pciids[search])
-  else
-         printf("Unknown\n")
-  end
+for dind, device in pairs (pci.getinfo()) do
+  local vendor = string.format ("%04x", device.vendor)
+  local main_id = vendor .. string.format ("%04x", device.product)
+  local sub_id =  string.format ("%04x%04x", device.sub_vendor, device.sub_product)
+  io.write (string.format ("%s:%s = %s %s (%s)\n", main_id, sub_id, pciids[vendor],
+                           pciids[main_id], pciids[main_id .. sub_id] or "unknown subdevice"))
 end
-
--- print(pciids["8086"])
--- print(pciids["10543009"])
--- print(pciids["00700003"])
--- print(pciids["0070e817"])
--- print(pciids["1002437a1002437a"])
 ......................................................