mirror of
https://github.com/minetest/minetest.git
synced 2024-08-20 05:24:15 +02:00
99 lines
2.9 KiB
Lua
99 lines
2.9 KiB
Lua
--Minetest
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--Copyright (C) 2023-24 rubenwardy
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--
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--This program is free software; you can redistribute it and/or modify
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--it under the terms of the GNU Lesser General Public License as published by
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--the Free Software Foundation; either version 2.1 of the License, or
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--(at your option) any later version.
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--
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--This program is distributed in the hope that it will be useful,
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--but WITHOUT ANY WARRANTY; without even the implied warranty of
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--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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--GNU Lesser General Public License for more details.
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--
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--You should have received a copy of the GNU Lesser General Public License along
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--with this program; if not, write to the Free Software Foundation, Inc.,
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--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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-- Screenshot
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local screenshot_dir = core.get_cache_path() .. DIR_DELIM .. "cdb"
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assert(core.create_dir(screenshot_dir))
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local screenshot_downloading = {}
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local screenshot_downloaded = {}
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local function get_filename(path)
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local parts = path:split("/")
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return parts[#parts]
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end
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local function get_file_extension(path)
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local parts = path:split(".")
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return parts[#parts]
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end
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function get_screenshot(package, screenshot_url, level)
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if not screenshot_url then
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return defaulttexturedir .. "no_screenshot.png"
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end
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-- Minetest only supports png and jpg
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local ext = get_file_extension(screenshot_url)
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if ext ~= "png" and ext ~= "jpg" then
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screenshot_url = screenshot_url:sub(0, -#ext - 1) .. "png"
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level = level or 4
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end
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-- Set thumbnail level
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if level then
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screenshot_url = screenshot_url:gsub("/thumbnails/[0-9]+/", "/thumbnails/" .. level .. "/")
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screenshot_url = screenshot_url:gsub("/uploads/", "/thumbnails/" .. level .. "/")
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end
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if screenshot_downloading[screenshot_url] then
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return defaulttexturedir .. "loading_screenshot.png"
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end
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local filepath = screenshot_dir .. DIR_DELIM ..
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("%s-%s-%s-l%d-%s"):format(package.type, package.author, package.name,
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level or 1, get_filename(screenshot_url))
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-- Return if already downloaded
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local file = io.open(filepath, "r")
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if file then
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file:close()
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return filepath
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end
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-- Show error if we've failed to download before
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if screenshot_downloaded[screenshot_url] then
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return defaulttexturedir .. "error_screenshot.png"
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end
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-- Download
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local function download_screenshot(params)
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return core.download_file(params.url, params.dest)
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end
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local function callback(success)
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screenshot_downloading[screenshot_url] = nil
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screenshot_downloaded[screenshot_url] = true
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if not success then
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core.log("warning", "Screenshot download failed for some reason")
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end
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ui.update()
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end
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if core.handle_async(download_screenshot,
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{ dest = filepath, url = screenshot_url }, callback) then
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screenshot_downloading[screenshot_url] = true
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else
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core.log("error", "ERROR: async event failed")
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return defaulttexturedir .. "error_screenshot.png"
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end
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return defaulttexturedir .. "loading_screenshot.png"
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end
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