added utility to compare packages versions on iso images

1 files changed, 80 insertions, 0 deletions

diff --git a/cmp-apks-iso b/cmp-apks-iso
new file mode 100755
index 0000000..2c7951f
--- /dev/null
+++ b/cmp-apks-iso
@@ -0,0 +1,80 @@
+#!/usr/bin/env lua
+
+-- script to compare the packages versions in 2 iso images
+-- usage: compare-apks 
+
+maxlen = 0
+
+function  read_package_list(file)
+	local a = {}
+	local h
+--	h = io.popen("tar -O -zxf ".. file.." -- apks/INDEX.md5.gz | gunzip -c | awk '{ print $2}'")
+
+	h = io.popen("isoinfo -R -f -i "..file.." | grep '.apk$' | sed 's:.*/::'")
+	for line in h:lines() do
+		p, v = string.match(line, "^(.+)-(%d.*).apk")
+		a[p] = v
+		if maxlen < #p + #v + 2 then
+			maxlen = #p + #v + 2
+		end
+	end
+	h:close()
+	return a
+end
+
+-- print all packages that exist in a1 but not in a2
+function missing_packages(a1, a2)
+	local ret = {}
+	local p,v
+	for p,v in pairs(a1) do
+		if a2[p] == nil then
+			table.insert(ret, p.."-"..v)
+		end
+	end
+	table.sort(ret)
+	return ret
+end
+
+function unexpand_tabs(s, tab)
+	tab = tab or 8
+	local pat = string.rep(".", tab)
+	s = string.gsub(s, pat, "%0\1")
+	s = string.gsub(s, " +\1", "\t")
+	s = string.gsub(s, "\1", "")
+	return s
+end
+
+function upgraded_packages(a1, a2)
+	local p,v, tmp 
+	local a = {}
+	for p,v in pairs(a2) do
+		if a1[p] and a1[p] ~= v then
+			tmp = unexpand_tabs(string.format("%-"..tostring(maxlen).."s(%s)", 
+				p.."-"..v, a1[p]))
+			table.insert(a, tmp)
+		end
+	end
+	table.sort(a)
+	return a
+end
+
+apks1 = read_package_list(arg[1])
+apks2 = read_package_list(arg[2])
+
+print("Removed packages:")
+for dummy,line in ipairs(missing_packages(apks1, apks2)) do
+	print(line)
+end
+print("\n")
+
+print("New pacakges:")
+for dummy,line in ipairs(missing_packages(apks2, apks1)) do
+	print(line)
+end
+print("\n")
+
+print("Upgraded/downgraded packages (from version):")
+for dummy,line in ipairs(upgraded_packages(apks1, apks2)) do
+	print(line)
+end
+