move apis into rom/modules/main for shell compatibility

sys/modules/opus/packages.lua

@@ -0,0 +1,70 @@
+local Util = require('opus.util')
+
+local fs        = _G.fs
+local textutils = _G.textutils
+
+local PACKAGE_DIR = 'packages'
+
+local Packages = { }
+
+function Packages:installed()
+	local list = { }
+
+	if fs.exists(PACKAGE_DIR) then
+		for _, dir in pairs(fs.list(PACKAGE_DIR)) do
+			local path = fs.combine(fs.combine(PACKAGE_DIR, dir), '.package')
+			list[dir] = Util.readTable(path)
+		end
+	end
+
+	return list
+end
+
+function Packages:list()
+	return Util.readTable('usr/config/packages') or { }
+end
+
+function Packages:isInstalled(package)
+	return self:installed()[package]
+end
+
+function Packages:downloadList()
+	local packages = {
+		[ 'develop-1.8' ] = 'https://pastebin.com/raw/WhEiNGZE',
+		[ 'master-1.8' ] = 'https://pastebin.com/raw/pexZpAxt',
+	}
+
+	if packages[_G.OPUS_BRANCH] then
+		Util.download(packages[_G.OPUS_BRANCH], 'usr/config/packages')
+	end
+end
+
+function Packages:downloadManifest(package)
+	local list = self:list()
+	local url = list and list[package]
+
+	if url then
+		local c = Util.httpGet(url)
+		if c then
+			c = textutils.unserialize(c)
+			if c then
+				c.repository = c.repository:gsub('{{OPUS_BRANCH}}', _G.OPUS_BRANCH)
+				return c
+			end
+		end
+	end
+end
+
+function Packages:getManifest(package)
+	local fname = 'packages/' .. package .. '/.package'
+	if fs.exists(fname) then
+		local c = Util.readTable(fname)
+		if c and c.repository then
+			c.repository = c.repository:gsub('{{OPUS_BRANCH}}', _G.OPUS_BRANCH)
+			return c
+		end
+	end
+	return self:downloadManifest(package)
+end
+
+return Packages