前一篇博文说了。在cocos2dx中怎么样使用iconv转码,这节我们将上一节中写的转码函数,做成一个lua接口。在lua脚本中使用。
网上能够下载到luaconv。可是编译的时候总是报错,所以自己写了一接口。
一 加入lua接口文件
// luaiconv.h
#ifndef __LUA_ICONV_H__ #define __LUA_ICONV_H__ #include "tolua++.h" #include "tolua_event.h" #include "lauxlib.h" #if CC_TARGET_PLATFORM == CC_PLATFORM_WIN32 #include "iconv.h" #elif CC_TARGET_PLATFORM == CC_PLATFORM_IOS #include <iconv.h> #elif CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID #include "iconv.h" #endif int tolua_iconv_open(lua_State *L); #endif
//luaiconv.cpp
#include "luaiconv.h" #include <stdlib.h> #define MAX_STRING_SIZE 1024 #define TEST_STR ("Hello, 这是个转码測试字符串") bool iconv_convert(void *src, unsigned int src_len,char *src_charset, void *dest, unsigned int dest_len, char *dest_charset) { const char *in; char *out,*dest_ptr; size_t in_left,out_left,mutant,converted; in_left = src_len; out_left = dest_len; in = (char *)src; out = dest_ptr = (char *)dest; iconv_t oConv=iconv_open(dest_charset,src_charset); if(oConv==(iconv_t)(-1)){ printf("XXXXXXXXXX ERROR: unable to open libiconv.\n"); return false; } mutant = iconv(oConv, &in, &in_left, &out, &out_left ); iconv_close(oConv); if(mutant == (size_t)(-1)){ printf("XXXXXXXXXX ERROR: unable to convert anything.\n"); return false; } converted = dest_len - out_left; dest_ptr[converted]=‘\0‘; printf("XXXXXXXXXX src string:%s\n", src); printf("XXXXXXXXXX to convert %u characters, %u mutanted , %u converted \n",src_len,mutant,converted); printf("XXXXXXXXXX dst string:%s\n", dest); return true; } void convertTest() { char inStr[] = TEST_STR; char outStr[MAX_STRING_SIZE]; iconv_convert(&inStr, sizeof(inStr), "GBK", &outStr, sizeof(outStr), "UTF-8"); printf("XXXXXXXXXX in string:%s\n", inStr); printf("XXXXXXXXXX out string:%s\n", outStr); } TOLUA_API int luaiconv(lua_State *L) { char *inbuf = (char*) luaL_checkstring(L, 1); char *src_charset = (char*) luaL_checkstring(L, 2); char *dst_charset = (char*) luaL_checkstring(L, 3); size_t ibleft = lua_strlen(L, 1); size_t obleft = (ibleft > 256) ? ibleft : 256; char *outbuf = (char*) malloc(obleft * sizeof(char)); if (outbuf == NULL) { lua_pushstring(L, ""); return 1; } if(!iconv_convert(inbuf, ibleft, src_charset, outbuf, obleft, dst_charset)){ lua_pushstring(L, ""); return 1; } lua_pushstring(L, outbuf); free(outbuf); return 1; } static luaL_Reg iconvlib[] = { {"luaiconv", luaiconv}, {NULL, NULL} }; // 函数名必须为luaopen_xxx,当中xxx表示library名称,Lua代码require "xxx"须要与之相应。 int luaopen_iconv(lua_State* L) { const char* libName = "iconv"; luaL_register(L, libName, iconvlib);// 调用方式libName.函数名 return 1; } int tolua_iconv_open(lua_State *L) { luaopen_iconv(L); return 1; }
在AppDelegate中
#include "luaiconv.h"
然后在AppDelegate::applicationDidFinishLaunching()中调用:
CCLuaEngine* pEngine = CCLuaEngine::defaultEngine(); CCScriptEngineManager::sharedManager()->setScriptEngine(pEngine); tolua_iconv_open(pEngine->getLuaStack()->getLuaState());
在lua中这样使用:
require "iconv" iconv.luaiconv("string to convert code","GBK","UTF-8")
二 改动项目的Android.mk
LOCAL_SRC_FILES 中加上luaiconv.cpp
切记在末尾加上空格和续行符:" \"
否则有可能会报错:
make: *** No rule to make target
‘xxx.o‘, needed by ‘xxx‘. Stop
时间: 2024-10-07 18:14:41