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#!/usr/bin/env lua
local build_dir = arg[1]
local git_path = arg[2] or "./test_rep/.git/"
-- Make it easier to test
if ( build_dir ) then
package.cpath = build_dir .. "?.so;" .. package.cpath
end
require"git2"
require"utils"
local function dump_rawobj(obj)
print('dump RawObject:', obj)
if obj == nil then
return
end
print('hash = ', obj:hash())
print('data = "' .. tostring(obj:data()) .. '"')
print('len = ', obj:len())
print('type = ', obj:type())
end
-- create database
local db = assert(git2.Database.new())
print("dump Database interface")
print(dbg_dump(db))
-- create backend
local obj_cache = {}
local function get_obj(oid)
print("------------------- exists callback:", oid)
if not oid then
return nil
end
-- convert oid to string.
oid = tostring(oid)
return obj_cache[oid]
end
local cbs = {
on_read = function(oid)
local raw_obj = nil
print("------------------- read callback:", oid)
raw_obj = get_obj(oid)
if not raw_obj then
return nil, git2.GIT.ENOTFOUND
end
return raw_obj, git2.GIT.SUCCESS
end,
on_read_header = function(oid)
local raw_obj = nil
print("------------------- read_header callback:", oid)
raw_obj = get_obj(oid)
if not raw_obj then
return nil, git2.GIT.ENOTFOUND
end
return raw_obj, git2.GIT.SUCCESS
end,
on_write = function(raw_obj)
local oid = raw_obj:hash()
print("------------------- write callback:", raw_obj)
if not oid then
return nil, -1
end
-- convert oid to string.
local oid_str = tostring(oid)
-- put raw object in cache
obj_cache[oid_str] = raw_obj
return oid, git2.GIT.SUCCESS
end,
on_exists = function(oid)
local raw_obj = nil
print("------------------- exists callback:", oid)
raw_obj = get_obj(oid)
if not raw_obj then
return raw_obj, git2.GIT.ENOTFOUND
end
return git2.GIT.SUCCESS
end,
on_free = function()
print("------------------- free callback:")
end,
}
local backend = git2.DatabaseBackend(cbs, 1)
print('add backend:', assert(db:add_backend(backend)))
print('create test blob:')
local raw_obj = git2.RawObject.new('blob',"any ol content will do")
print("test writing RawObject to database:")
local oid, err = db:write(raw_obj)
print('write:', oid, err)
print()
print("test reading RawObjects from database:")
local object_ids = {
{'tree', "31f3d5703ce27f0b63c3eb0d829abdc95b51deae"},
{'commit', "d5a93c463d4cca0068750eb6af7b4b54eea8599b"},
{'blob', "f534deb63f967cddd4bd440d05d3f6f075e55fca"},
{'blob', "275a4019807c7bb7bc80c0ca8903bf84345e1bdf"},
}
for _,obj in ipairs(object_ids) do
local oid = git2.OID.str(obj[2])
local raw_obj, err = db:read(oid)
print('read', raw_obj, err)
dump_rawobj(raw_obj)
print()
end
local status, rep = pcall(git2.Repository.open_no_backend,
git_path, git_path .. 'objects', git_path .. 'index', git_path .. '../')
print(status, rep)
print()
print("try reading objects from repository:")
local object_ids = {
{'tree', "31f3d5703ce27f0b63c3eb0d829abdc95b51deae"},
{'commit', "d5a93c463d4cca0068750eb6af7b4b54eea8599b"},
{'blob', "f534deb63f967cddd4bd440d05d3f6f075e55fca"},
{'blob', "275a4019807c7bb7bc80c0ca8903bf84345e1bdf"},
}
for _,obj in ipairs(object_ids) do
local oid = git2.OID.str(obj[2])
local obj, err = rep:lookup(oid, obj[1])
print('read', obj, err)
dump_rawobj(obj)
print()
end
db = nil
backend = nil
collectgarbage"collect"
collectgarbage"collect"
collectgarbage"collect"
print()
print()
print("finished")
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