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-- gall.tag
--
-- Git Abstraction Layer for Lua -- Tag object interface
--
-- Copyright 2012 Daniel Silverstone <dsilvers@digital-scurf.org>
--
--
local ll = require "gall.ll"
local objs = setmetatable({}, {__mode="k"})
local repos = setmetatable({}, {__mode="k"})
local parsed = setmetatable({}, {__mode="k"})
local function parse_person(pers)
local real, email, when, tz = pers:match("^(.-) <([^>]+)> ([0-9]+) ([+-][0-9]+)$")
return {
realname = real,
email = email,
unixtime = when,
timezone = tz
}
end
local PGP_SIG_START = "-----BEGIN PGP SIGNATURE-----"
local function tagindex(tag, field)
if not parsed[tag] then
local raw = objs[tag].raw
local headers, body, signature = {}, ""
local state = "headers"
for l in raw:gmatch("([^\n]*)\n") do
if state == "headers" then
local first, second = l:match("^([^ ]+) (.+)$")
if first then
if headers[first] then
headers[first][#headers[first]+1] = second
else
headers[first] = { second }
end
else
state = "message"
end
elseif state == "message" then
if l == PGP_SIG_START then
signature = l .. "\n"
state = "signature"
else
body = body .. l .. "\n"
end
else
signature = signature .. l .. "\n"
end
end
-- there's always one object
rawset(tag, "object", repos[tag]:get(headers.object[1]))
-- Always one type
rawset(tag, "type", headers.type[1])
-- Always one tag name
rawset(tag, "tag", headers.tag[1])
-- Always one tagger
rawset(tag, "tagger", parse_person(headers.tagger[1]))
-- A message
rawset(tag, "message", body)
-- And an optional signature
rawset(tag, "signature", signature)
-- Promote the SHA
rawset(tag, "sha", objs[tag].sha)
-- Signal we are parsed
parsed[tag] = true
end
return rawget(tag, field)
end
local function tagtostring(tag)
return "<GitTag(" .. tostring(objs[tag].sha) .. ") in " .. tostring(repos[tag]) .. ">"
end
local tagmeta = {
__index = tagindex,
__tostring = tagtostring
}
local function _new(repo, obj)
local ret = setmetatable({}, tagmeta)
objs[ret] = obj
repos[ret] = repo
return ret
end
return {
new = _new
}
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