ap: initial implementation

ap is a helper script to parse APKBUILD and calculate build time
dependencies.

1 files changed, 105 insertions, 0 deletions

diff --git a/aports.lua b/aports.lua
new file mode 100755
index 0000000..44691c8
--- /dev/null
+++ b/aports.lua
@@ -0,0 +1,105 @@
+module(..., package.seeall)
+
+function split(str)
+	local t = {}
+	local e
+	if (str == nil) then
+		return nil
+	end
+	for e in string.gmatch(str, "%S+") do
+		t[#t + 1] = string.gsub(e, ":.*", "")
+	end
+	return t
+end
+
+function split_apkbuild(line)
+	local r = {}
+	local dir,pkgname, pkgver, pkgrel, arch, depends, makedepends, subpackages, source = string.match(line, "([^|]*)|([^|]*)|([^|]*)|([^|]*)|([^|]*)|([^|]*)|([^|]*)|([^|]*)")
+	r.dir = dir
+	r.pkgname = pkgname
+	r.pkgver = pkgver
+	r.pkgrel = pkgrel
+	r.depends = split(depends)
+	r.makedepends = split(makedepends)
+	r.subpackages = split(subpackages)
+	r.source = split(source)
+	return r
+end
+
+-- parse the APKBUILDs and return an iterator
+function parse_apkbuilds(dirs)
+	local i,v, p
+	local str=""
+	if dirs == nil then
+		return nil
+	end
+	--expand repos
+	for i,v in ipairs(dirs) do
+		str = str..v.."/*/APKBUILD "
+	end	
+		
+	local p = io.popen([[ 
+		for i in ]]..str..[[; do
+			pkgname=
+			pkgver=
+			pkgrel=
+			arch=
+			depends=
+			makedepends=
+			subpackages=
+			source=
+			dir="${i%/APKBUILD}"
+			cd "$dir"
+			. ./APKBUILD
+			echo $dir\|$pkgname\|$pkgver\|$pkgrel\|$arch\|$depends\|$makedepends\|$subpackages\|$source
+		done
+	]])
+	return function()
+		local line = p:read("*line")
+		if line == nil then
+			p:close()
+			return nil
+		end
+		return split_apkbuild(line) 
+	end
+end
+
+
+function target_packages(pkgdb, pkgname)
+	local i,v
+	local t = {}
+	for i,v in ipairs(pkgdb[pkgname]) do
+		table.insert(t, pkgname.."-"..v.pkgver.."-r"..v.pkgrel..".apk")
+	end
+	return t
+end
+
+function init_apkdb(repodirs)
+	local pkgdb = {}
+	local revdeps = {}
+	local a
+	for a in parse_apkbuilds(repodirs) do
+	--	io.write(a.pkgname.." "..a.pkgver.."\t"..a.dir.."\n")
+		if pkgdb[a.pkgname] == nil then
+			pkgdb[a.pkgname] = {}
+		end
+		table.insert(pkgdb[a.pkgname], a)
+		-- add subpackages to package db
+		local k,v
+		for k,v in pairs(a.subpackages) do
+			if pkgdb[v] == nil then
+				pkgdb[v] = {}
+			end
+			table.insert(pkgdb[v], a)
+		end
+		-- add to reverse dependencies
+		for k,v in pairs(a.makedepends) do
+			if revdeps[v] == nil then
+				revdeps[v] = {}
+			end
+			table.insert(revdeps[v], a)
+		end
+	end
+	return pkgdb, revdeps
+end
+