1 files changed, 242 insertions, 0 deletions

diff --git a/src/luarocks/cfg.lua b/src/luarocks/cfg.lua
new file mode 100644
index 00000000..3c4c5aed
--- /dev/null
+++ b/src/luarocks/cfg.lua
@@ -0,0 +1,242 @@
+
+local rawset, next, table, pairs, print, require, io, os, setmetatable =
+      rawset, next, table, pairs, print, require, io, os, setmetatable
+
+--- Configuration for LuaRocks.
+-- Tries to load the user's configuration file and
+-- defines defaults for unset values. See the
+-- <a href="http://luarocks.org/en/Config_file_format">config
+-- file format documentation</a> for details.
+module("luarocks.cfg")
+
+local persist = require("luarocks.persist")
+
+local detected = {}
+local system,proc
+
+-- A proper installation of LuaRocks will hardcode the system
+-- and proc values with LUAROCKS_UNAME_S and LUAROCKS_UNAME_M,
+-- so that this detection does not run every time. When it is
+-- performed, we use the Unix way to identify the system,
+-- even on Windows (assuming UnxUtils or Cygwin).
+system = LUAROCKS_UNAME_S or io.popen("uname -s"):read("*l")
+proc = LUAROCKS_UNAME_M or io.popen("uname -m"):read("*l")
+if proc:match("i[%d]86") then
+   proc = "x86"
+elseif proc:match("amd64") or proc:match("x86_64") then
+   proc = "x86_64"
+elseif proc:match("Power Macintosh") then
+   proc = "powerpc"
+end
+
+if system == "FreeBSD" then
+   detected.unix = true
+   detected.freebsd = true
+elseif system == "Darwin" then
+   detected.unix = true
+   detected.macosx = true
+elseif system == "Linux" then
+   detected.unix = true
+   detected.linux = true
+elseif system and system:match("^CYGWIN") then
+   detected.unix = true
+   detected.cygwin = true
+elseif system and system:match("^Windows") then
+   detected.windows = true
+else
+   detected.unix = true
+   -- Fall back to Unix in unknown systems.
+end
+
+local sys_config_file, home_config_file, home_tree
+if detected.windows then
+   home = os.getenv("APPDATA") or "c:"
+   sys_config_file = "c:/luarocks/config.lua"
+   home_config_file = home.."/luarocks/config.lua"
+   home_tree = home.."/luarocks/"
+else
+   home = os.getenv("HOME") or ""
+   sys_config_file = "/etc/luarocks/config.lua"
+   home_config_file = home.."/.luarocks/config.lua"
+   home_tree = home.."/.luarocks/"
+end
+
+variables = {}
+rocks_trees = {}
+
+persist.load_into_table(LUAROCKS_SYSCONFIG or sys_config_file, _M)
+
+if not LUAROCKS_FORCE_CONFIG then
+   home_config_file = os.getenv("LUAROCKS_CONFIG") or home_config_file
+   local home_overrides = persist.load_into_table(home_config_file, { home = home })
+   if home_overrides then
+      local util = require("luarocks.util")
+      util.deep_merge(_M, home_overrides)
+   end
+end
+
+local defaults = {
+   arch = "unknown",
+   lib_extension = "unknown",
+   obj_extension = "unknown",
+   rocks_servers = {
+      "http://luarocks.luaforge.net/rocks"
+   },
+   lua_extension = "lua",
+   lua_interpreter = LUA_INTERPRETER or "lua",
+   downloader = LUAROCKS_DOWNLOADER or "wget",
+   md5checker = LUAROCKS_MD5CHECKER or "md5sum",
+   variables = {}
+}
+
+defaults.external_deps_subdirs = {
+   bin = "bin",
+   lib = "lib",
+   include = "include"
+}
+defaults.runtime_external_deps_subdirs = defaults.external_deps_subdirs
+
+if detected.windows then
+   home_config_file = home_config_file:gsub("\\","/")
+   defaults.lib_extension = "dll"
+   defaults.obj_extension = "obj"
+   local rootdir = LUAROCKS_ROCKS_TREE or home_tree
+   defaults.root_dir = rootdir
+   defaults.rocks_dir = rootdir.."/rocks/"
+   defaults.scripts_dir = rootdir.."/bin/"
+   defaults.external_deps_dirs = { "c:/external/" }
+   defaults.variables.LUA_BINDIR = LUA_BINDIR and LUA_BINDIR:gsub("\\", "/") or "c:/lua5.1/bin"
+   defaults.variables.LUA_INCDIR = LUA_INCDIR and LUA_INCDIR:gsub("\\", "/") or "c:/lua5.1/include"
+   defaults.variables.LUA_LIBDIR = LUA_LIBDIR and LUA_LIBDIR:gsub("\\", "/") or "c:/lua5.1/lib"
+   defaults.arch = "win32-"..proc
+   defaults.platforms = {"win32", "windows" }
+   defaults.cmake_generator = "MinGW Makefiles"
+   -- TODO: Split Windows flavors between mingw and msvc
+   -- defaults.make = "make"
+   -- defaults.makefile = "Makefile"
+   defaults.make = "nmake"
+   defaults.makefile = "Makefile.win"
+   defaults.variables.CC = "cl"
+   defaults.variables.LD = "link"
+   defaults.variables.MT = "mt"
+   defaults.variables.CFLAGS = "/MD /O2"
+   defaults.variables.LIBFLAG = "/dll"
+   defaults.external_deps_patterns = {
+      bin = { "?.exe", "?.bat" },
+      lib = { "?.lib", "?.dll" },
+      include = { "?.h" }
+   }
+   defaults.runtime_external_deps_patterns = {
+      bin = { "?.exe", "?.bat" },
+      lib = { "?.dll" },
+      include = { "?.h" }
+   }
+end
+
+if detected.unix then
+   defaults.lib_extension = "so"
+   defaults.obj_extension = "o"
+   local rootdir = LUAROCKS_ROCKS_TREE or home_tree
+   defaults.root_dir = rootdir
+   defaults.rocks_dir = rootdir.."/rocks/"
+   defaults.scripts_dir = rootdir.."/bin/"
+   defaults.external_deps_dirs = { "/usr/local", "/usr" }
+   defaults.variables.LUA_BINDIR = LUA_BINDIR or "/usr/local/bin"
+   defaults.variables.LUA_INCDIR = LUA_INCDIR or "/usr/local/include"
+   defaults.variables.LUA_LIBDIR = LUA_LIBDIR or "/usr/local/lib"
+   defaults.variables.CFLAGS = "-O2"
+   defaults.cmake_generator = "Unix Makefiles"
+   defaults.make = "make"
+   defaults.platforms = { "unix" }
+   defaults.variables.CC = "cc"
+   defaults.variables.LD = "ld"
+   defaults.variables.LIBFLAG = "-shared"
+   defaults.external_deps_patterns = {
+      bin = { "?" },
+      lib = { "lib?.a", "lib?.so" },
+      include = { "?.h" }
+   }
+   defaults.runtime_external_deps_patterns = {
+      bin = { "?" },
+      lib = { "lib?.so" },
+      include = { "?.h" }
+   }
+end
+
+if detected.cygwin then
+   defaults.lib_extension = "so" -- can be overridden in the config file for mingw builds
+   defaults.arch = "cygwin-"..proc
+   defaults.platforms = {"unix", "cygwin"}
+   defaults.cmake_generator = "Unix Makefiles"
+   defaults.variables.CC = "echo -llua | xargs gcc"
+   defaults.variables.LD = "echo -llua | xargs gcc"
+   defaults.variables.LIBFLAG = "-shared"
+end
+
+defaults.external_lib_extension = defaults.lib_extension
+
+if detected.macosx then
+   defaults.external_lib_extension = "dylib"
+   defaults.arch = "macosx-"..proc
+   defaults.platforms = {"unix", "macosx"}
+   defaults.variables.CC = "export MACOSX_DEPLOYMENT_TARGET=10.3; gcc"
+   defaults.variables.LD = "export MACOSX_DEPLOYMENT_TARGET=10.3; gcc"
+   defaults.variables.LIBFLAG = "-bundle -undefined dynamic_lookup -all_load"
+end
+
+if detected.linux then
+   defaults.arch = "linux-"..proc
+   defaults.platforms = {"unix", "linux"}
+   defaults.variables.CC = "gcc"
+   defaults.variables.LD = "gcc"
+   defaults.variables.LIBFLAG = "-shared"
+end
+
+if detected.freebsd then
+   defaults.arch = "freebsd-"..proc
+   defaults.make = "gmake"
+   defaults.platforms = {"unix", "freebsd"}
+   defaults.variables.CC = "gcc"
+   defaults.variables.LD = "gcc"
+   defaults.variables.LIBFLAG = "-shared"
+end
+
+if proc == "x86_64" and not defaults.variables.CFLAGS:match("-fPIC") then
+   defaults.variables.CFLAGS = defaults.variables.CFLAGS.." -fPIC"
+end
+
+-- Expose some more values detected by LuaRocks for use by rockspec authors.
+defaults.variables.LUA = defaults.lua_interpreter
+defaults.variables.LIB_EXTENSION = defaults.lib_extension
+defaults.variables.OBJ_EXTENSION = defaults.obj_extension
+defaults.variables.LUAROCKS_PREFIX = LUAROCKS_PREFIX
+
+local cfg_mt = {
+   __index = function(t, k)
+      local default = defaults[k]
+      if default then
+         rawset(t, k, default)
+      end
+      return default
+   end
+}
+
+if not _M.variables then
+   _M.variables = {}
+end
+for k,v in pairs(defaults.variables) do
+   if not _M.variables[k] then
+      _M.variables[k] = v
+   end
+end
+
+setmetatable(_M, cfg_mt)
+
+if not next(rocks_trees) then
+   if home_tree then
+      table.insert(rocks_trees, home_tree)
+   end
+   if LUAROCKS_ROCKS_TREE then
+      table.insert(rocks_trees, LUAROCKS_ROCKS_TREE)
+   end
+end