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// LResource: Fluxbox Resource implementation in lua
// Copyright (C) 2010 - 2011 Pavel Labath
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include <config.h>
#include "LResource.hh"
#include "I18n.hh"
#include "LuaUtil.hh"
#include "Resource.hh"
extern const char LResourceHelper[];
extern const unsigned int LResourceHelper_size;
namespace FbTk {
namespace {
const char make_root[] = "FbTk::make_root";
const char register_resource[] = "FbTk::register_resource";
const char dump_resources[] = "FbTk::dump_resources";
const char resource_metatable[] = "FbTk::resource_metatable";
int readResource(lua::state *l) {
Resource_base *r = *static_cast<Resource_base **>(l->touserdata(-1));
l->pop();
if(r != NULL)
r->pushToLua(*l);
else
l->pushnil();
return 1;
}
int writeResource(lua::state *l) {
Resource_base *r = *static_cast<Resource_base **>(l->touserdata(-2));
l->replace(-2);
if(r != NULL)
r->setFromLua(*l);
else
l->pop();
return 0;
}
void initState(Lua &l) {
l.checkstack(6);
lua::stack_sentry s(l);
l.loadstring(LResourceHelper, LResourceHelper_size);
l.pushfunction(&readResource);
l.pushfunction(&writeResource);
l.newtable(); {
l.newtable(); {
l.pushvalue(-2);
l.setfield(-2, "__metatable");
} l.setfield(lua::REGISTRYINDEX, resource_metatable);
}
l.call(3, 3);
l.setfield(lua::REGISTRYINDEX, dump_resources);
l.setfield(lua::REGISTRYINDEX, register_resource);
l.setfield(lua::REGISTRYINDEX, make_root);
}
Lua::RegisterInitFunction register_init_state(&initState);
} // anonymous namespace
void LResourceManager::convert(ResourceManager &old, const std::string &new_file) {
Lua l;
LResourceManager new_rm(old.root(), l);
for(ResourceList::const_iterator i = old.begin(); i != old.end(); ++i) {
// adding the resource to new_rm will set it to default value
// we save the value to a temp variable so we can restore it later
const std::string &t = (*i)->getString();
new_rm.addResource(**i);
(*i)->setFromString(t.c_str());
}
new_rm.save(new_file.c_str(), NULL);
}
LResourceManager::LResourceManager(const std::string &root, Lua &l)
: ResourceManager_base(root), m_l(&l) {
setLua(l);
}
void LResourceManager::load(const std::string &filename, const std::string &fallback) {
_FB_USES_NLS;
m_l->checkstack(1);
lua::stack_sentry s(*m_l);
m_filename = filename;
try {
m_l->loadfile(filename.c_str());
m_l->call(0, 0);
}
catch(lua::exception &e) {
std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database",
"Failed trying to read rc file") << ":" << filename << std::endl;
std::cerr << "Fluxbox: " << e.what() << std::endl;
std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFileTrying, "Retrying with",
"Retrying rc file loading with (the following file)")
<< ": " << fallback << std::endl;
try {
m_l->loadfile(fallback.c_str());
m_l->call(0, 0);
}
catch(lua::exception &e) {
std::cerr << _FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database", "")
<< ": " << fallback << std::endl;
std::cerr << "Fluxbox: " << e.what() << std::endl;
}
}
}
bool LResourceManager::save(const char *filename, const char *) {
m_l->checkstack(3);
lua::stack_sentry s(*m_l);
if(filename == NULL)
filename = m_filename.c_str();
m_l->getfield(lua::REGISTRYINDEX, dump_resources);
m_l->getfield(lua::GLOBALSINDEX, m_root.c_str());
m_l->pushstring(filename);
m_l->call(2, 0);
return true; // FIXME
}
void LResourceManager::addResource(Resource_base &r) {
ResourceManager_base::addResource(r);
try {
doAddResource(r);
}
catch(...) {
ResourceManager_base::removeResource(r);
throw;
}
}
void LResourceManager::doAddResource(Resource_base &r) {
m_l->checkstack(5);
lua::stack_sentry s(*m_l);
m_l->getfield(lua::REGISTRYINDEX, register_resource);
m_l->getfield(lua::GLOBALSINDEX, m_root.c_str());
m_l->pushstring(r.name());
m_l->createuserdata<Resource_base *>(&r); {
m_l->getfield(lua::REGISTRYINDEX, resource_metatable);
m_l->setmetatable(-2);
}
m_l->call(3, 0);
}
void LResourceManager::removeResource(Resource_base &r) {
doRemoveResource(r);
ResourceManager_base::removeResource(r);
}
void LResourceManager::doRemoveResource(Resource_base &r) {
m_l->checkstack(4);
lua::stack_sentry s(*m_l);
m_l->getfield(lua::REGISTRYINDEX, register_resource);
m_l->getfield(lua::GLOBALSINDEX, m_root.c_str());
m_l->pushstring(r.name());
r.pushToLua(*m_l);
m_l->call(3, 1);
*static_cast<Resource_base **>(m_l->touserdata(-1)) = NULL;
m_l->pop();
}
void LResourceManager::setLua(Lua &l) {
l.checkstack(2);
lua::stack_sentry s(l);
for(ResourceList::const_iterator i = begin(); i != end(); ++i)
doRemoveResource(**i);
l.getfield(lua::REGISTRYINDEX, make_root);
l.pushstring(m_root);
l.call(1, 1);
l.readOnlySetField(lua::GLOBALSINDEX, m_root.c_str());
m_l = &l;
for(ResourceList::const_iterator i = begin(); i != end(); ++i)
doAddResource(**i);
}
} // end namespace FbTk
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