让Ogre支持中文路径与中文文件名

Ogre中路径与文件名不支持中文,这是VS2005之后版本的std::fstream对中文路径处理不正确的原因,所以加载中文路径或文件名不成功,解决办法:

在主函数开始加入 setlocale(LC_ALL,"Chinese-simplified");

例如:

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virtual void createScene(void)

{

setlocale(LC_ALL,"Chinese-simplified");

Entity* ogreHead = mSceneMgr->createEntity("Head","左慈头.mesh");

SceneNode* headNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();

headNode->attachObject(ogreHead);

mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));

}

virtual void createScene(void)

{

setlocale(LC_ALL,"Chinese-simplified");

Entity* ogreHead = mSceneMgr->createEntity("Head","左慈头.mesh");

SceneNode* headNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();

headNode->attachObject(ogreHead);

mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));

}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/zyfu0000/archive/2009/12/07/4958731.aspx

Ogre的文件读取是使用的标准库的io库读取的，众所周知的是，在vs2005是存在着bug的。

因此想要一劳永逸的解决这个办法唯有去修改Ogre的源代码，以下为修改方法：

打开OgreFileSystem.cpp文件，找到FileSystemArchive::open方法，使用以下代码替换之：


DataStreamPtr
FileSystemArchive::open(const String& filename) const


{



String full_path = concatenate_path(mName,
filename);




// Use
filesystem to determine size


// (quicker
than streaming to the end and back)


struct stat
tagStat;


int ret = stat(full_path.c_str(), &tagStat);



assert(ret == 0 && "Problem
getting file size" );




// Always
open in binary mode


static std::vector<wchar_t>
s_wchar_buf((size_t)128);



size_t lengthUnicode = MultiByteToWideChar(CP_ACP, 0,
full_path.c_str(), full_path.size(), NULL, 0);


if (s_wchar_buf.size() < lengthUnicode + 1)


{



s_wchar_buf.resize(lengthUnicode * 2);



}



wchar_t* szUnicode = &s_wchar_buf[0];



MultiByteToWideChar(CP_ACP, 0,
full_path.c_str(), full_path.size(), szUnicode, lengthUnicode);



szUnicode[lengthUnicode] = 0;



std::ifstream* origStream = new std::ifstream();



origStream->open(szUnicode,
std::ios::in | std::ios::binary);




// Should
check ensure open succeeded, in case fail for some reason.


if (origStream->fail())


{



delete origStream;



OGRE_EXCEPT(Exception::ERR_FILE_NOT_FOUND,


"Cannot
open file: " + filename,


"FileSystemArchive::open");



}




/// Construct
return stream, tell it to delete on destroy



FileStreamDataStream* stream = new FileStreamDataStream(filename,



origStream, tagStat.st_size, true);


return DataStreamPtr(stream);



}

下面是一段ogre中的文件操作相关的源码


代码

DataStreamPtr FileSystemArchive::open(const String& filename) const

{

String full_path = concatenate_path(mName, filename);

// Use filesystem to determine size

// (quicker than streaming to the end and back)

struct stat tagStat;

int ret = stat(full_path.c_str(), &tagStat);

assert(ret == 0 && "Problem getting file size" );

// Always open in binary mode

std::ifstream *origStream = OGRE_NEW_T(std::ifstream, MEMCATEGORY_GENERAL)();

origStream->open(full_path.c_str(), std::ios::in | std::ios::binary);

// Should check ensure open succeeded, in case fail for some reason.

if (origStream->fail())

{

OGRE_DELETE_T(origStream, basic_ifstream, MEMCATEGORY_GENERAL);

OGRE_EXCEPT(Exception::ERR_FILE_NOT_FOUND,

"Cannot open file: " + filename,

"FileSystemArchive::open");

}

/// Construct return stream, tell it to delete on destroy

FileStreamDataStream* stream = OGRE_NEW FileStreamDataStream(filename,

origStream, tagStat.st_size, true);

return DataStreamPtr(stream);

}

主要的代码是

origStream->open(full_path.c_str(), std::ios::in | std::ios::binary);

通过在文件流打开文件之前，我们设置一下语言环境

std::locale::global(std::locale(""));

接下来我们发现，中文路径的问题解决了，但是向文件中写入整型或浮点型数据时会有问题，比如“1000”，输出之后就成了“1，000”

这正是因为我们改变了语言环境的原因，为了将修改减少到最小，我们应该在文件打开完毕后，恢复之前的设置

std::locale saveLocal = std::locale::global(std::locale(""));

origStream->open(full_path.c_str(), std::ios::in | std::ios::binary);

std::locale::global(saveLocal);

everything is fine now~