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--- Module implementing the LuaRocks "search" command.
-- Queries LuaRocks servers.
local cmd_search = {}
local cfg = require("luarocks.core.cfg")
local util = require("luarocks.util")
local search = require("luarocks.search")
local queries = require("luarocks.queries")
local results = require("luarocks.results")
cmd_search.help_summary = "Query the LuaRocks servers."
cmd_search.help_arguments = "[--source] [--binary] { <name> [<version>] | --all }"
cmd_search.help = [[
--source Return only rockspecs and source rocks,
to be used with the "build" command.
--binary Return only pure Lua and binary rocks (rocks that can be used
with the "install" command without requiring a C toolchain).
--all List all contents of the server that are suitable to
this platform, do not filter by name.
--porcelain Return a machine readable format.
]]
--- Splits a list of search results into two lists, one for "source" results
-- to be used with the "build" command, and one for "binary" results to be
-- used with the "install" command.
-- @param result_tree table: A search results table.
-- @return (table, table): Two tables, one for source and one for binary
-- results.
local function split_source_and_binary_results(result_tree)
local sources, binaries = {}, {}
for name, versions in pairs(result_tree) do
for version, repositories in pairs(versions) do
for _, repo in ipairs(repositories) do
local where = sources
if repo.arch == "all" or repo.arch == cfg.arch then
where = binaries
end
local entry = results.new(name, version, repo.repo, repo.arch)
search.store_result(where, entry)
end
end
end
return sources, binaries
end
--- Driver function for "search" command.
-- @param name string: A substring of a rock name to search.
-- @param version string or nil: a version may also be passed.
-- @return boolean or (nil, string): True if build was successful; nil and an
-- error message otherwise.
function cmd_search.command(flags, name, version)
name = util.adjust_name_and_namespace(name, flags)
if flags["all"] then
name, version = "", nil
end
if type(name) ~= "string" and not flags["all"] then
return nil, "Enter name and version or use --all. "..util.see_help("search")
end
local query = queries.new(name:lower(), version, true)
local result_tree, err = search.search_repos(query)
local porcelain = flags["porcelain"]
local full_name = name .. (version and " " .. version or "")
util.title(full_name .. " - Search results for Lua "..cfg.lua_version..":", porcelain, "=")
local sources, binaries = split_source_and_binary_results(result_tree)
if next(sources) and not flags["binary"] then
util.title("Rockspecs and source rocks:", porcelain)
search.print_result_tree(sources, porcelain)
end
if next(binaries) and not flags["source"] then
util.title("Binary and pure-Lua rocks:", porcelain)
search.print_result_tree(binaries, porcelain)
end
return true
end
return cmd_search
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