use lua for config

Makefile

@@ -1,7 +1,7 @@
 all : skynet blackhole.so snlua.so logger.so skynet.so gate.so client
 
 skynet : skynet_main.c skynet_handle.c skynet_module.c skynet_mq.c skynet_server.c skynet_start.c skynet_timer.c skynet_error.c
-	gcc -Wall -g -Wl,-E -o $@ $^ -lpthread -ldl -lrt
+	gcc -Wall -g -Wl,-E -o $@ $^ -lpthread -ldl -lrt -Wl,-E -llua -lm
 
 blackhole.so : skynet_blackhole.c
 	gcc -Wall -g -fPIC --shared $^ -o $@
@@ -10,7 +10,7 @@ logger.so : skynet_logger.c
 	gcc -Wall -g -fPIC --shared $^ -o $@
 
 snlua.so : service_lua.c
-	gcc -Wall -g -fPIC --shared $^ -o $@ -Wl,-E -llua -lm
+	gcc -Wall -g -fPIC --shared $^ -o $@ 
 
 gate.so : gate/mread.c gate/ringbuffer.c gate/map.c gate/main.c
 	gcc -Wall -g -fPIC --shared -o $@ $^ -I. -Igate 

config

@@ -0,0 +1,4 @@
+thread = 8
+mqueue = 256
+cpath = "./"
+logger = nil

skynet_imp.h

@@ -4,7 +4,7 @@
 struct skynet_config {
 	int thread;
 	int mqueue_size;
-	char * logger;
+	const char * logger;
 	const char * module_path;
 };
 

skynet_main.c

@@ -1,14 +1,63 @@
 #include "skynet_imp.h"
+
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+
+static int
+optint(lua_State *L, const char *key, int opt) {
+	lua_getglobal(L, key);
+	int n = lua_tointeger(L,-1);
+	lua_pop(L,1);
+	if (n==0)
+		return opt;
+	return n;
+}
+
+static const char *
+optstring(lua_State *L, const char *key,const char * opt) {
+	lua_getglobal(L, key);
+	const char * str = lua_tostring(L,-1);
+	lua_pop(L,1);
+	if (str == NULL) {
+		return opt;
+	}
+	return strdup(str);
+}
 
 int
-main(void) {
+main(int argc, char *argv[]) {
+	const char * config_file = "config";
+	if (argc > 1) {
+		config_file = argv[1];
+	}
 	struct skynet_config config;
 
-	config.thread = 8;
-	config.mqueue_size = 256;
-	config.module_path = "./";
-	config.logger = NULL;
+	struct lua_State *L = luaL_newstate();
+	luaL_openlibs(L);	// link lua lib
+	lua_close(L);
+
+	L = luaL_newstate();
+
+	int err = luaL_dofile(L, config_file);
+	if (err) {
+		fprintf(stderr,"%s\n",lua_tostring(L,-1));
+		lua_close(L);
+		return 1;
+	} 
+	const char *path = optstring(L,"lua_path","./?.lua");
+	setenv("LUA_PATH",path,1);
+	const char *cpath = optstring(L,"lua_cpath","./?.so");
+	setenv("LUA_CPATH",cpath,1);
+
+	config.thread =  optint(L,"thread",8);
+	config.mqueue_size = optint(L,"mqueue",256);
+	config.module_path = optstring(L,"cpath","./");
+	config.logger = optstring(L,"logger",NULL);
+	lua_close(L);
 
 	skynet_start(&config);
 

skynet_server.c

@@ -38,7 +38,7 @@ _id_to_hex(char * str, int id) {
 }
 
 struct skynet_context * 
-skynet_context_new(const char * name, char *parm) {
+skynet_context_new(const char * name, const char *parm) {
 	struct skynet_module * mod = skynet_module_query(name);
 
 	if (mod == NULL)

skynet_server.h

@@ -4,7 +4,7 @@
 struct skynet_context;
 struct skynet_message;
 
-struct skynet_context * skynet_context_new(const char * name, char * parm);
+struct skynet_context * skynet_context_new(const char * name, const char * parm);
 void skynet_context_grab(struct skynet_context *);
 struct skynet_context * skynet_context_release(struct skynet_context *);
 int skynet_context_handle(struct skynet_context *);