295 lines
10 KiB
Lua
295 lines
10 KiB
Lua
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--- Functions for managing the repository on disk.
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module("luarocks.rep", package.seeall)
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local fs = require("luarocks.fs")
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local path = require("luarocks.path")
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local cfg = require("luarocks.cfg")
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local util = require("luarocks.util")
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local dir = require("luarocks.dir")
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local manif = require("luarocks.manif")
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local deps = require("luarocks.deps")
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--- Get all installed versions of a package.
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-- @param name string: a package name.
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-- @return table or nil: An array of strings listing installed
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-- versions of a package, or nil if none is available.
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function get_versions(name)
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assert(type(name) == "string")
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local dirs = fs.list_dir(path.versions_dir(name))
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return (dirs and #dirs > 0) and dirs or nil
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end
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--- Check if a package exists in a local repository.
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-- Version numbers are compared as exact string comparison.
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-- @param name string: name of package
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-- @param version string: package version in string format
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-- @return boolean: true if a package is installed,
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-- false otherwise.
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function is_installed(name, version)
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assert(type(name) == "string")
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assert(type(version) == "string")
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return fs.is_dir(path.install_dir(name, version))
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end
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local function recurse_rock_manifest_tree(file_tree, action)
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assert(type(file_tree) == "table")
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assert(type(action) == "function")
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local function do_recurse_rock_manifest_tree(tree, parent_path, parent_module)
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for file, sub in pairs(tree) do
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if type(sub) == "table" then
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local ok, err = do_recurse_rock_manifest_tree(sub, parent_path..file.."/", parent_module..file..".")
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if not ok then return nil, err end
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else
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local ok, err = action(parent_path, parent_module, file)
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if not ok then return nil, err end
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end
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end
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return true
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end
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return do_recurse_rock_manifest_tree(file_tree, "", "")
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end
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local function store_package_data(result, name, sub, prefix)
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assert(type(result) == "table")
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assert(type(name) == "string")
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assert(type(sub) == "table" or type(sub) == "string")
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assert(type(prefix) == "string")
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if type(sub) == "table" then
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for sname, ssub in pairs(sub) do
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store_package_data(result, sname, ssub, prefix..name.."/")
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end
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elseif type(sub) == "string" then
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local pathname = prefix..name
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result[path.path_to_module(pathname)] = pathname
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end
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end
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local function store_package_data(result, name, file_tree)
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if not file_tree then return end
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return recurse_rock_manifest_tree(file_tree,
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function(parent_path, parent_module, file)
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local pathname = parent_path..file
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result[path.path_to_module(pathname)] = pathname
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return true
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end
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)
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end
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--- Obtain a list of modules within an installed package.
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-- @param package string: The package name; for example "luasocket"
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-- @param version string: The exact version number including revision;
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-- for example "2.0.1-1".
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-- @return table: A table of modules where keys are module identifiers
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-- in "foo.bar" format and values are pathnames in architecture-dependent
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-- "foo/bar.so" format. If no modules are found or if package or version
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-- are invalid, an empty table is returned.
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function package_modules(package, version)
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assert(type(package) == "string")
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assert(type(version) == "string")
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local result = {}
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local rock_manifest = manif.load_rock_manifest(package, version)
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store_package_data(result, package, rock_manifest.lib)
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store_package_data(result, package, rock_manifest.lua)
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return result
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end
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--- Obtain a list of command-line scripts within an installed package.
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-- @param package string: The package name; for example "luasocket"
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-- @param version string: The exact version number including revision;
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-- for example "2.0.1-1".
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-- @return table: A table of items where keys are command names
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-- as strings and values are pathnames in architecture-dependent
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-- ".../bin/foo" format. If no modules are found or if package or version
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-- are invalid, an empty table is returned.
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function package_commands(package, version)
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assert(type(package) == "string")
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assert(type(version) == "string")
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local result = {}
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local rock_manifest = manif.load_rock_manifest(package, version)
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store_package_data(result, package, rock_manifest.bin)
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return result
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end
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--- Check if a rock contains binary executables.
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-- @param name string: name of an installed rock
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-- @param version string: version of an installed rock
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-- @return boolean: returns true if rock contains platform-specific
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-- binary executables, or false if it is a pure-Lua rock.
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function has_binaries(name, version)
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assert(type(name) == "string")
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assert(type(version) == "string")
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local rock_manifest = manif.load_rock_manifest(name, version)
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if rock_manifest.bin then
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for name, md5 in pairs(rock_manifest.bin) do
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-- TODO verify that it is the same file. If it isn't, find the actual command.
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if fs.is_actual_binary(dir.path(cfg.deploy_bin_dir, name)) then
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return true
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end
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end
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end
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return false
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end
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function run_hook(rockspec, hook_name)
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assert(type(rockspec) == "table")
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assert(type(hook_name) == "string")
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local hooks = rockspec.hooks
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if not hooks then
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return true
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end
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if not hooks.substituted_variables then
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util.variable_substitutions(hooks, rockspec.variables)
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hooks.substituted_variables = true
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end
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local hook = hooks[hook_name]
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if hook then
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print(hook)
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if not fs.execute(hook) then
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return nil, "Failed running "..hook_name.." hook."
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end
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end
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return true
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end
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local function install_binary(source, target)
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assert(type(source) == "string")
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assert(type(target) == "string")
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local match = source:match("%.lua$")
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local file, ok, err
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if not match then
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file = io.open(source)
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end
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if match or (file and file:read():match("^#!.*lua.*")) then
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ok, err = fs.wrap_script(source, target)
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else
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ok, err = fs.copy_binary(source, target)
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end
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if file then file:close() end
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return ok, err
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end
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local function resolve_conflict(target, deploy_dir, name, version)
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local cname, cversion = manif.find_current_provider(target)
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if not cname then
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return nil, cversion
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end
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if name ~= cname or deps.compare_versions(version, cversion) then
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local versioned = path.versioned_name(target, deploy_dir, cname, cversion)
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fs.make_dir(dir.dir_name(versioned))
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fs.move(target, versioned)
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return target
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else
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return path.versioned_name(target, deploy_dir, name, version)
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end
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end
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function deploy_files(name, version)
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assert(type(name) == "string")
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assert(type(version) == "string")
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local function deploy_file_tree(file_tree, source_dir, deploy_dir, move_fn)
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if not move_fn then
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move_fn = fs.move
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end
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return recurse_rock_manifest_tree(file_tree,
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function(parent_path, parent_module, file)
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local source = dir.path(source_dir, parent_path, file)
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local target = dir.path(deploy_dir, parent_path, file)
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local ok, err
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if fs.exists(target) then
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local new_target, err = resolve_conflict(target, deploy_dir, name, version)
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if err == "untracked" then
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fs.delete(target)
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elseif err then return nil, err.." Cannot install new version."
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else target = new_target end
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end
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fs.make_dir(dir.dir_name(target))
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ok, err = move_fn(source, target)
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fs.remove_dir_tree_if_empty(dir.dir_name(source))
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if not ok then return nil, err end
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return true
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end
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)
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end
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local rock_manifest = manif.load_rock_manifest(name, version)
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local ok, err = true
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if rock_manifest.bin then
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ok, err = deploy_file_tree(rock_manifest.bin, path.bin_dir(name, version), cfg.deploy_bin_dir, install_binary)
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end
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if ok and rock_manifest.lua then
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ok, err = deploy_file_tree(rock_manifest.lua, path.lua_dir(name, version), cfg.deploy_lua_dir)
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end
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if ok and rock_manifest.lib then
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ok, err = deploy_file_tree(rock_manifest.lib, path.lib_dir(name, version), cfg.deploy_lib_dir)
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end
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return ok, err
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end
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--- Delete a package from the local repository.
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-- Version numbers are compared as exact string comparison.
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-- @param name string: name of package
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-- @param version string: package version in string format
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function delete_version(name, version)
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assert(type(name) == "string")
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assert(type(version) == "string")
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local function delete_deployed_file_tree(file_tree, deploy_dir)
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return recurse_rock_manifest_tree(file_tree,
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function(parent_path, parent_module, file)
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local target = dir.path(deploy_dir, parent_path, file)
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local versioned = path.versioned_name(target, deploy_dir, name, version)
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if fs.exists(versioned) then
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fs.delete(versioned)
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fs.remove_dir_tree_if_empty(dir.dir_name(versioned))
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else
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fs.delete(target)
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local next_name, next_version = manif.find_next_provider(target)
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if next_name then
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local versioned = path.versioned_name(target, deploy_dir, next_name, next_version)
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fs.move(versioned, target)
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fs.remove_dir_tree_if_empty(dir.dir_name(versioned))
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end
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fs.remove_dir_tree_if_empty(dir.dir_name(target))
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end
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return true
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end
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)
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end
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local rock_manifest = manif.load_rock_manifest(name, version)
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if not rock_manifest then
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return nil, "rock_manifest file not found for "..name.." "..version.." - not a LuaRocks 2 tree?"
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end
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local ok, err = true
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if rock_manifest.bin then
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ok, err = delete_deployed_file_tree(rock_manifest.bin, cfg.deploy_bin_dir)
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end
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if ok and rock_manifest.lua then
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ok, err = delete_deployed_file_tree(rock_manifest.lua, cfg.deploy_lua_dir)
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end
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if ok and rock_manifest.lib then
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ok, err = delete_deployed_file_tree(rock_manifest.lib, cfg.deploy_lib_dir)
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end
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if err then return nil, err end
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fs.delete(path.install_dir(name, version))
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if not get_versions(name) then
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fs.delete(dir.path(cfg.rocks_dir, name))
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end
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return true
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end
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