1
1
forked from 0ad/0ad
0ad/source/ps/Filesystem.cpp
Ykkrosh 310f3466a8 # Hotloading of actor XML files.
Stop ignoring actor XML animation speeds.
Add decentralised registration of hotloaders.
Move player ID storage into CModel, to simplify CUnit.
Remove obsolete unit ID allocation code.
Remove some material junk.

This was SVN commit r7605.
2010-06-03 01:29:43 +00:00

143 lines
3.6 KiB
C++

/* Copyright (C) 2010 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "Filesystem.h"
#include "gui/GUIManager.h"
#include "ps/CLogger.h"
#include "lib/res/h_mgr.h" // h_reload
#include "lib/sysdep/dir_watch.h"
PIVFS g_VFS;
static std::vector<std::pair<FileReloadFunc, void*> > g_ReloadFuncs;
bool FileExists(const VfsPath& pathname)
{
return g_VFS->GetFileInfo(pathname, 0) == INFO::OK;
}
void RegisterFileReloadFunc(FileReloadFunc func, void* obj)
{
g_ReloadFuncs.push_back(std::make_pair(func, obj));
}
void UnregisterFileReloadFunc(FileReloadFunc func, void* obj)
{
g_ReloadFuncs.erase(std::remove(g_ReloadFuncs.begin(), g_ReloadFuncs.end(), std::make_pair(func, obj)));
}
// try to skip unnecessary work by ignoring uninteresting notifications.
static bool CanIgnore(const DirWatchNotification& notification)
{
// ignore directories
const fs::wpath& pathname = notification.Pathname();
if(pathname.leaf() == L".")
return true;
// ignore uninteresting file types (e.g. temp files, or the
// hundreds of XMB files that are generated from XML)
const std::wstring extension = fs::extension(pathname);
const wchar_t* extensionsToIgnore[] = { L".xmb", L".tmp" };
for(size_t i = 0; i < ARRAY_SIZE(extensionsToIgnore); i++)
{
if(!wcscasecmp(extension.c_str(), extensionsToIgnore[i]))
return true;
}
return false;
}
LibError ReloadChangedFiles()
{
std::vector<DirWatchNotification> notifications;
RETURN_ERR(dir_watch_Poll(notifications));
for(size_t i = 0; i < notifications.size(); i++)
{
if(!CanIgnore(notifications[i]))
{
VfsPath pathname;
RETURN_ERR(g_VFS->GetVirtualPath(notifications[i].Pathname(), pathname));
RETURN_ERR(g_VFS->Invalidate(pathname));
// Tell each hotloadable system about this file change:
RETURN_ERR(g_GUI->ReloadChangedFiles(pathname));
for (size_t j = 0; j < g_ReloadFuncs.size(); ++j)
g_ReloadFuncs[j].first(g_ReloadFuncs[j].second, pathname);
RETURN_ERR(h_reload(pathname));
}
}
return INFO::OK;
}
CVFSFile::CVFSFile()
{
}
CVFSFile::~CVFSFile()
{
}
PSRETURN CVFSFile::Load(const VfsPath& filename)
{
// Load should never be called more than once, so complain
if (m_Buffer)
{
debug_assert(0);
return PSRETURN_CVFSFile_AlreadyLoaded;
}
LibError ret = g_VFS->LoadFile(filename, m_Buffer, m_BufferSize);
if (ret != INFO::OK)
{
LOGERROR(L"CVFSFile: file %ls couldn't be opened (vfs_load: %ld)", filename.string().c_str(), ret);
return PSRETURN_CVFSFile_LoadFailed;
}
return PSRETURN_OK;
}
const u8* CVFSFile::GetBuffer() const
{
// Die in a very obvious way, to avoid subtle problems caused by
// accidentally forgetting to check that the open succeeded
if (!m_Buffer)
{
debug_warn(L"GetBuffer() called with no file loaded");
throw PSERROR_CVFSFile_InvalidBufferAccess();
}
return m_Buffer.get();
}
size_t CVFSFile::GetBufferSize() const
{
return m_BufferSize;
}
CStr CVFSFile::GetAsString() const
{
return std::string((char*)GetBuffer(), GetBufferSize());
}