Added the ability to fetch and checkout a tag/branch from a remote re…

…pository

Also, a CMake build for LuaDist. Embeds source from lua-bitop, lua-zlib and
an implementation of SHA1 hash to minimize dependencies.

CMakeLists.txt

@@ -0,0 +1,25 @@
+# Copyright (C) 2012 LuaDist.
+# Created by Michal Kottman
+# Redistribution and use of this file is allowed according to the terms of the MIT license.
+# For details see the COPYRIGHT file distributed with LuaDist.
+# Please note that the package source code is licensed under its own license.
+
+project ( lua-git C )
+cmake_minimum_required ( VERSION 2.8 )
+include ( cmake/dist.cmake )
+include ( lua )
+
+find_package ( ZLIB )
+
+set ( SRC src/bit.c src/core.c src/sha.c src/zlib.c )
+set ( LIB ${ZLIB_LIBRARIES} )
+
+# Binary
+install_lua_module ( git.core ${SRC} LINK ${LIB} )
+# Lua 
+install_lua_module ( git lua/git.lua )
+install_lua_module ( git.objects lua/git/objects.lua )
+install_lua_module ( git.pack lua/git/pack.lua )
+install_lua_module ( git.protocol lua/git/protocol.lua )
+install_lua_module ( git.repo lua/git/repo.lua )
+install_lua_module ( git.util lua/git/util.lua )

cmake/FindLua.cmake

@@ -0,0 +1,118 @@
+# Locate Lua library
+# This module defines
+#  LUA_EXECUTABLE, if found
+#  LUA_FOUND, if false, do not try to link to Lua 
+#  LUA_LIBRARIES
+#  LUA_INCLUDE_DIR, where to find lua.h
+#  LUA_VERSION_STRING, the version of Lua found (since CMake 2.8.8)
+#
+# Note that the expected include convention is
+#  #include "lua.h"
+# and not
+#  #include <lua/lua.h>
+# This is because, the lua location is not standardized and may exist
+# in locations other than lua/
+
+#=============================================================================
+# Copyright 2007-2009 Kitware, Inc.
+# Modified to support Lua 5.2 by LuaDist 2012
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+#
+# The required version of Lua can be specified using the
+# standard syntax, e.g. FIND_PACKAGE(Lua 5.1)
+# Otherwise the module will search for any available Lua implementation
+
+# Always search for non-versioned lua first (recommended)
+SET(_POSSIBLE_LUA_INCLUDE include include/lua)
+SET(_POSSIBLE_LUA_EXECUTABLE lua)
+SET(_POSSIBLE_LUA_LIBRARY lua)
+
+# Determine possible naming suffixes (there is no standard for this)
+IF(Lua_FIND_VERSION_MAJOR AND Lua_FIND_VERSION_MINOR)
+  SET(_POSSIBLE_SUFFIXES "${Lua_FIND_VERSION_MAJOR}${Lua_FIND_VERSION_MINOR}" "${Lua_FIND_VERSION_MAJOR}.${Lua_FIND_VERSION_MINOR}" "-${Lua_FIND_VERSION_MAJOR}.${Lua_FIND_VERSION_MINOR}")
+ELSE(Lua_FIND_VERSION_MAJOR AND Lua_FIND_VERSION_MINOR)
+  SET(_POSSIBLE_SUFFIXES "52" "5.2" "-5.2" "51" "5.1" "-5.1")
+ENDIF(Lua_FIND_VERSION_MAJOR AND Lua_FIND_VERSION_MINOR)
+
+# Set up possible search names and locations
+FOREACH(_SUFFIX ${_POSSIBLE_SUFFIXES})
+  LIST(APPEND _POSSIBLE_LUA_INCLUDE "include/lua${_SUFFIX}")
+  LIST(APPEND _POSSIBLE_LUA_EXECUTABLE "lua${_SUFFIX}")
+  LIST(APPEND _POSSIBLE_LUA_LIBRARY "lua${_SUFFIX}")
+ENDFOREACH(_SUFFIX)
+
+# Find the lua executable
+FIND_PROGRAM(LUA_EXECUTABLE
+  NAMES ${_POSSIBLE_LUA_EXECUTABLE}
+)
+
+# Find the lua header
+FIND_PATH(LUA_INCLUDE_DIR lua.h
+  HINTS
+  $ENV{LUA_DIR}
+  PATH_SUFFIXES ${_POSSIBLE_LUA_INCLUDE}
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /usr/local
+  /usr
+  /sw # Fink
+  /opt/local # DarwinPorts
+  /opt/csw # Blastwave
+  /opt
+)
+
+# Find the lua library
+FIND_LIBRARY(LUA_LIBRARY 
+  NAMES ${_POSSIBLE_LUA_LIBRARY}
+  HINTS
+  $ENV{LUA_DIR}
+  PATH_SUFFIXES lib64 lib
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /usr/local
+  /usr
+  /sw
+  /opt/local
+  /opt/csw
+  /opt
+)
+
+IF(LUA_LIBRARY)
+  # include the math library for Unix
+  IF(UNIX AND NOT APPLE)
+    FIND_LIBRARY(LUA_MATH_LIBRARY m)
+    SET( LUA_LIBRARIES "${LUA_LIBRARY};${LUA_MATH_LIBRARY}" CACHE STRING "Lua Libraries")
+  # For Windows and Mac, don't need to explicitly include the math library
+  ELSE(UNIX AND NOT APPLE)
+    SET( LUA_LIBRARIES "${LUA_LIBRARY}" CACHE STRING "Lua Libraries")
+  ENDIF(UNIX AND NOT APPLE)
+ENDIF(LUA_LIBRARY)
+
+# Determine Lua version
+IF(LUA_INCLUDE_DIR AND EXISTS "${LUA_INCLUDE_DIR}/lua.h")
+  FILE(STRINGS "${LUA_INCLUDE_DIR}/lua.h" lua_version_str REGEX "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua .+\"")
+
+  STRING(REGEX REPLACE "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua ([^\"]+)\".*" "\\1" LUA_VERSION_STRING "${lua_version_str}")
+  UNSET(lua_version_str)
+ENDIF()
+
+INCLUDE(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set LUA_FOUND to TRUE if 
+# all listed variables are TRUE
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua
+                                  REQUIRED_VARS LUA_LIBRARIES LUA_INCLUDE_DIR
+                                  VERSION_VAR LUA_VERSION_STRING)
+
+MARK_AS_ADVANCED(LUA_INCLUDE_DIR LUA_LIBRARIES LUA_LIBRARY LUA_MATH_LIBRARY LUA_EXECUTABLE)
+