Add source code.

CMakeLists.txt

@@ -0,0 +1,57 @@
+cmake_minimum_required(VERSION 3.14)
+project(LLS VERSION 1.0 LANGUAGES C CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
+endif()
+
+# --- SQLite ------------------------------------------------------------------
+# Use the system SQLite if present, otherwise download the amalgamation.
+find_package(SQLite3)
+
+if(NOT SQLite3_FOUND)
+  message(STATUS "System SQLite3 not found - fetching the amalgamation")
+  include(FetchContent)
+  if(POLICY CMP0135)
+    cmake_policy(SET CMP0135 NEW)
+  endif()
+  FetchContent_Declare(sqlite3_amalgamation
+    URL https://www.sqlite.org/2024/sqlite-amalgamation-3450100.zip)
+  FetchContent_MakeAvailable(sqlite3_amalgamation)
+
+  find_package(Threads REQUIRED)
+  add_library(sqlite3_local STATIC ${sqlite3_amalgamation_SOURCE_DIR}/sqlite3.c)
+  target_include_directories(sqlite3_local PUBLIC ${sqlite3_amalgamation_SOURCE_DIR})
+  target_link_libraries(sqlite3_local PUBLIC Threads::Threads ${CMAKE_DL_LIBS})
+  add_library(SQLite::SQLite3 ALIAS sqlite3_local)
+endif()
+
+# --- Application -------------------------------------------------------------
+add_executable(lls
+  src/main.cpp
+  src/Completer.cpp
+  src/Config.cpp
+  src/Database.cpp
+  src/Display.cpp
+  src/ExternalEditor.cpp
+  src/LineEditor.cpp
+  src/Repl.cpp
+  src/Status.cpp
+  src/StringUtil.cpp
+  src/Table.cpp
+  src/Terminal.cpp
+  src/Tokenizer.cpp
+)
+
+target_include_directories(lls PRIVATE include)
+target_link_libraries(lls PRIVATE SQLite::SQLite3)
+
+if(MSVC)
+  target_compile_options(lls PRIVATE /W4)
+else()
+  target_compile_options(lls PRIVATE -Wall -Wextra -Wpedantic)
+endif()