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path: root/infra/containers/cgit/license.lua
blob: ff5685f23d4a6f52cce9b13f5bd9fb1551b228cc (plain)
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-- Copyright (C) 2026 Doan Luu Duc Tai <doan@luuduct.ai>
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as
-- published by the Free Software Foundation, either version 3 of the
-- License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU Affero General Public License for more details.
--
-- You should have received a copy of the GNU Affero General Public License
-- along with this program.  If not, see <https://www.gnu.org/licenses/>.

local chunks = {}
local rendered = false

function filter_open(filename)
    chunks = {}
    rendered = filename == "web/THIRD-PARTY-LICENSES.html"
end

function filter_write(buffer)
    if rendered then
        chunks[#chunks + 1] = buffer
    else
        html_txt(buffer)
    end
end

function filter_close()
    if rendered then
        local query = os.getenv("QUERY_STRING") or ""
        local suffix = query ~= "" and ("?" .. query) or ""
        html('<nav aria-label="License views"><strong>Rendered</strong> | <a href="')
        html_attr("../tree/web/THIRD-PARTY-LICENSES.html" .. suffix)
        html('">Source</a> | <a href="')
        html_attr("../plain/web/THIRD-PARTY-LICENSES.html" .. suffix)
        html('">Raw</a></nav>')
        html('<iframe title="Third-party licenses" sandbox="" referrerpolicy="no-referrer" style="width:100%;height:80vh;border:0" srcdoc="')
        html_attr([[<!doctype html><meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src 'unsafe-inline'">]])
        html_attr(table.concat(chunks))
        html('"></iframe>')
    end
    return 0
end