feat(cli): tomlua command

.github/rockspec.template

@@ -39,6 +39,7 @@ build = {
   },
   install_variables = {
     LIBDIR="$(LIBDIR)",
+    BINDIR="$(BINDIR)",
     LUADIR="$(LUADIR)",
   },
 }

.gitignore

@@ -1,4 +1,6 @@
 **/result
-**/lib
+**/result-*
+**/repl-result-*
 **/.cache
+build/
 **/compile_commands.json

Makefile

@@ -1,22 +1,34 @@
 src          ?= .
 SRC          ?= $(src)
 SRC          := $(abspath $(SRC))
-DESTDIR      ?= $(SRC)/lib
+DESTDIR      ?= ./build/lib
 CC           ?= gcc
 LUA          ?= lua
 BEAR         ?= bear
-GREP         ?= grep
 CFLAGS       ?= -fPIC -x c -O3 -flto -Wl,-s -Winline
 LIBFLAG      ?= -shared
 
+ifdef LUA_INC
+LUA_INCDIR   ?= $(LUA_INC)
+endif
+
 CFLAGS       += $(LIBFLAG) -I"$(LUA_INCDIR)"
 TESTDIR      := $(SRC)/tests
 SRCS         := $(SRC)/src/tomlua.c \
                 $(SRC)/src/decode.c \
                 $(SRC)/src/encode.c \
                 $(SRC)/src/dates.c
 
-BENCH_ITERS  ?= 100000
+ifdef out
+PREFIX       ?= $(out)
+endif
+ifdef PREFIX
+BINDIR       ?= $(PREFIX)/bin
+LUADIR       ?= $(PREFIX)/lua
+LIBDIR       ?= $(PREFIX)/lib
+endif
+
+FIX_SHEBANG  := print(string.format("\#!%s\\npackage.cpath = %q .. [[/?.so;]] .. package.cpath\\n-- ", arg[1], arg[2]))
 
 check_lua_incdir = \
 	@if [ -z "$(LUA_INCDIR)" ]; then \
@@ -30,15 +42,36 @@ check_so_was_built = \
 		false; \
 	fi
 
+define newline
+
+
+endef
+define FIX_BEAR_RESULT
+local input, tmp = "compile_commands.json", "compile_commands.tmp";
+local infile = assert(io.open(input, "r"));
+local outfile = assert(io.open(tmp, "w"));
+for line in infile:lines() do
+  if not line:find("-###", 1, true) then
+    outfile:write(line, "\n");
+  end
+end
+infile:close();
+outfile:close();
+assert(os.rename(tmp, input));
+endef
+
+BENCH_ITERS  ?= 100000
+
 build: $(SRC)/src/*
 	$(check_lua_incdir)
 	@mkdir -p $(DESTDIR)
 	$(CC) $(CFLAGS) -o $(DESTDIR)/tomlua.so $(SRCS)
 
 bear:   # used to generate compile_commands.json, which editor tools such as clangd and ccls use
 	$(check_lua_incdir)
-	$(BEAR) -- $(CC) -### $(CFLAGS) -o $(DESTDIR)/tomlua.so $(SRCS) > /dev/null 2>&1
-	$(GREP) -v -- "-###" compile_commands.json > compile_commands.tmp && mv compile_commands.tmp compile_commands.json
+	@$(BEAR) -- $(CC) -### $(CFLAGS) -o $(DESTDIR)/tomlua.so $(SRCS) > /dev/null 2>&1;
+	@echo '$(subst $(newline), ,$(FIX_BEAR_RESULT))' | $(LUA) -;
+	@echo "Created compile_commands.json";
 
 test: $(SRC)/src/* $(TESTDIR)/*
 	$(check_so_was_built)
@@ -52,19 +85,31 @@ bench: $(SRC)/src/* $(TESTDIR)/*
 	$(check_so_was_built)
 	$(LUA) "$(TESTDIR)/test.lua" "$(DESTDIR)" 2 $(BENCH_ITERS) $(SKIP_TOML_EDIT)
 
-install: $(SRC)/lua/tomlua/meta.lua
+install: $(SRC)/lua/tomlua/meta.lua $(SRC)/bin/tomlua
 ifdef LIBDIR
 	$(check_so_was_built)
 	@mkdir -p "$(LIBDIR)";
-	cp "$(DESTDIR)/tomlua.so" "$(LIBDIR)/";
-	@echo "Installed to $(LIBDIR)";
+	@cp "$(DESTDIR)/tomlua.so" "$(LIBDIR)/";
+	@echo "Installed library to $(LIBDIR)";
 ifdef LUADIR
 	@mkdir -p "$(LUADIR)/tomlua";
-	cp "$(SRC)/lua/tomlua/meta.lua" "$(LUADIR)/tomlua/";
+	@cp "$(SRC)/lua/tomlua/meta.lua" "$(LUADIR)/tomlua/";
+	@echo "Installed type definitions to $(LUADIR)";
+endif
+ifdef BINDIR
+	@mkdir -p "$(BINDIR)";
+ifeq ($(filter /%,$(LUA)),)
+	@echo '$(FIX_SHEBANG)' | $(LUA) - "/usr/bin/env $(LUA)" "$(LIBDIR)" > "$(BINDIR)/tomlua"
+else
+	@echo '$(FIX_SHEBANG)' | $(LUA) - "$(LUA)" "$(LIBDIR)" > "$(BINDIR)/tomlua"
+endif
+	@cat "$(SRC)/bin/tomlua" >> "$(BINDIR)/tomlua";
+	@chmod +x "$(BINDIR)/tomlua";
+	@echo "Installed binary to $(BINDIR)";
 endif
 else
 	@echo "LIBDIR not set, skipping install"
 endif
 
 clean:
-	rm -rf $(DESTDIR) compile_commands.json compile_commands.tmp
+	rm -rf $(DESTDIR) compile_commands.json compile_commands.tmp build

README.md

@@ -13,6 +13,7 @@ It is not intended to replace packages like [toml\_edit](https://github.com/nvim
 * Compatible with Lua 5.1+.
 * Some advanced TOML compliance features are optional (`fancy_dates`, etc.).
 * Allows you to read directly into an existing lua table of defaults. This cuts out the step of merging them yourself, making it even more performant and easier to use!
+* Command for using the library from the command line. (`tomlua --help` to see the list of options).
 
 ## Limitations