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view share/lua/5.2/luarocks/download.lua @ 8065:591b1467ccdf
<int-e> le/rn paste/"Paste" is a short story by Henry James. Its contents has been cut into pieces and distributed over numerous tin boxes on the World Wide Web, little pearls of wisdom buried among ordinary pastes.
author | HackBot |
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date | Sun, 15 May 2016 13:14:57 +0000 |
parents | d137f631bad5 |
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--- Module implementing the luarocks "download" command. -- Download a rock from the repository. module("luarocks.download", package.seeall) local util = require("luarocks.util") local path = require("luarocks.path") local fetch = require("luarocks.fetch") local search = require("luarocks.search") help_summary = "Download a specific rock file from a rocks server." help_arguments = "[--all] [--arch=<arch> | --source | --rockspec] [<name> [<version>]]" help = [[ --all Download all files if there are multiple matches. --source Download .src.rock if available. --rockspec Download .rockspec if available. --arch=<arch> Download rock for a specific architecture. ]] function download(arch, name, version, all) local results, err local query = search.make_query(name, version) if arch then query.arch = arch end if all then if name == "" then query.exact_name = false end results = search.search_repos(query) else results, err = search.find_suitable_rock(query) end if type(results) == "string" then local file = fetch.fetch_url(results) return file elseif type(results) == "table" and next(results) then if all then local all_ok = true local any_err = "" for name, result in pairs(results) do for version, versions in pairs(result) do for _,items in pairs(versions) do local filename = path.make_url(items.repo, name, version, items.arch) local ok, err = fetch.fetch_url(filename) if not ok then all_ok = false any_err = any_err .. "\n" .. err end end end end return all_ok, any_err else util.printerr("Multiple search results were returned.") util.title("Search results:") search.print_results(results) return nil, "Please narrow your query or use --all." end end return nil, "Could not find a result named "..name..(version and " "..version or "").."." end --- Driver function for the "download" command. -- @param name string: a rock name. -- @param version string or nil: if the name of a package is given, a -- version may also be passed. -- @return boolean or (nil, string): true if successful or nil followed -- by an error message. function run(...) local flags, name, version = util.parse_flags(...) assert(type(version) == "string" or not version) if type(name) ~= "string" and not flags["all"] then return nil, "Argument missing, see help." end if not name then name, version = "", "" end local arch if flags["source"] then arch = "src" elseif flags["rockspec"] then arch = "rockspec" elseif flags["arch"] then arch = flags["arch"] end local dl, err = download(arch, name, version, flags["all"]) return dl and true, err end