vmr_plugins/dlang.lua at main · gvcgo/vmr_plugins · GitHub

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-- dlang: live HTML crawl of the D release archive
-- (ported from vcollector official/dlang.go).
local C = dofile(__vmr_plugin_dir .. "/_vmr_common.lua")

plugin_name = "dlang"
sdk_name = "dlang"
plugin_version = "0.1"
homepage = "https://dlang.org/"

ic = C.installer({
    flag_files = {
        windows = { "windows" },
        darwin = { "osx" },
        linux = { "linux" },
    },
    binary_dirs = {
        windows = { { "windows", "bin" } },
        darwin = { { "osx", "bin" } },
        linux = { { "linux", "bin64" } },
    },
})

local HOST = "https://downloads.dlang.org"
local DOWNLOAD_URL = "https://downloads.dlang.org/releases/2.x/"

local function get_version(vl, vname, vhref)
    local durl = vmrUrlJoin(HOST, vhref)
    local resp = vmrGetResponse(durl, 180, {})

    vmrEach(vmrInitSelection(resp, "div#content li a"), function(_, anchor)
        local href = vmrAttr(anchor, "href")
        local url, arch, os_name = "", "", ""
        if vmrHasSuffix(href, ".windows.zip") then
            url, arch, os_name = vmrUrlJoin(HOST, href), "amd64", "windows"
        elseif vmrHasSuffix(href, ".osx.zip") then
            url, arch, os_name = vmrUrlJoin(HOST, href), "amd64", "darwin"
        elseif vmrHasSuffix(href, ".linux.zip") then
            url, arch, os_name = vmrUrlJoin(HOST, href), "amd64", "linux"
        end

        if url ~= "" then
            vmrAddItem(vl, vname, {
                url = url,
                arch = arch,
                os = os_name,
                sum = "",
                sum_type = "",
                size = 0,
                installer = vmrInstallerUnarchiver,
                lts = "",
                extra = "",
            })
        end
    end)
end

function crawl()
    local vl = vmrNewVersionList()
    local resp = vmrGetResponse(DOWNLOAD_URL, 180, {})

    vmrEach(vmrInitSelection(resp, "div#content li a"), function(_, anchor)
        local vname = vmrText(anchor)
        local vhref = vmrAttr(anchor, "href")
        if vhref == "" then
            return
        end

        local parts, n = vmrSplit(vname, ".")
        if n < 3 then
            return
        end

        -- Only releases newer than 2.065.0 are published as archives with this layout.
        local minor = tonumber(parts[2] or "") or 0
        if minor < 65 then
            return
        end

        get_version(vl, vname, vhref)
    end)

    return vl
end