worldspawn/radiant/preferencedictionary.h
2020-11-17 12:16:16 +01:00

280 lines
8.1 KiB
C++

/*
Copyright (C) 2001-2006, William Joseph.
All Rights Reserved.
This file is part of GtkRadiant.
GtkRadiant 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.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if !defined( INCLUDED_PREFERENCEDICTIONARY_H )
#define INCLUDED_PREFERENCEDICTIONARY_H
#include "preferencesystem.h"
#include "xml/ixml.h"
#include "stream/stringstream.h"
#include "generic/callback.h"
#include "versionlib.h"
#include <map>
class PreferenceDictionary : public PreferenceSystem {
class PreferenceEntry {
Property<const char *> m_cb;
public:
PreferenceEntry(const Property<const char *> &cb)
: m_cb(cb)
{
}
void importString(const char *string)
{
m_cb.set(string);
}
void exportString(const Callback<void(const char *)> &importer)
{
m_cb.get(importer);
}
};
typedef std::map<CopiedString, PreferenceEntry> PreferenceEntries;
PreferenceEntries m_preferences;
typedef std::map<CopiedString, CopiedString> PreferenceCache;
PreferenceCache m_cache;
public:
typedef PreferenceEntries::iterator iterator;
iterator begin()
{
return m_preferences.begin();
}
iterator end()
{
return m_preferences.end();
}
iterator find(const char *name)
{
return m_preferences.find(name);
}
void registerPreference(const char *name, const Property<const char *> &cb)
{
m_preferences.insert(PreferenceEntries::value_type(name, PreferenceEntry(cb)));
PreferenceCache::iterator i = m_cache.find(name);
if (i != m_cache.end()) {
cb.set(i->second.c_str());
m_cache.erase(i);
}
}
void importPref(const char *name, const char *value)
{
PreferenceEntries::iterator i = m_preferences.find(name);
if (i != m_preferences.end()) {
(*i).second.importString(value);
} else {
m_cache.erase(name);
m_cache.insert(PreferenceCache::value_type(name, value));
}
}
};
inline void XMLPreference_importString(XMLImporter &importer, const char *value)
{
importer.write(value, string_length(value));
}
typedef ReferenceCaller<XMLImporter, void(const char *), XMLPreference_importString> XMLPreferenceImportStringCaller;
class XMLPreferenceDictionaryExporter : public XMLExporter {
class XMLQPrefElement : public XMLElement {
const char *m_version;
public:
XMLQPrefElement(const char *version) : m_version(version)
{
}
const char *name() const
{
return "qpref";
}
const char *attribute(const char *name) const
{
if (string_equal(name, "version")) {
return m_version;
}
return "";
}
void forEachAttribute(XMLAttrVisitor &visitor) const
{
visitor.visit("version", m_version);
}
};
class XMLPreferenceElement : public XMLElement {
const char *m_name;
public:
XMLPreferenceElement(const char *name)
: m_name(name)
{
}
const char *name() const
{
return "epair";
}
const char *attribute(const char *name) const
{
if (string_equal(name, "name")) {
return m_name;
}
return "";
}
void forEachAttribute(XMLAttrVisitor &visitor) const
{
visitor.visit("name", m_name);
}
};
typedef PreferenceDictionary PreferenceEntries;
PreferenceEntries &m_preferences;
const char *m_version;
public:
XMLPreferenceDictionaryExporter(PreferenceDictionary &preferences, const char *version)
: m_preferences(preferences), m_version(version)
{
}
void exportXML(XMLImporter &importer)
{
importer.write("\n", 1);
XMLQPrefElement qpref_element(m_version);
importer.pushElement(qpref_element);
importer.write("\n", 1);
for (PreferenceEntries::iterator i = m_preferences.begin(); i != m_preferences.end(); ++i) {
XMLPreferenceElement epair_element((*i).first.c_str());
importer.pushElement(epair_element);
(*i).second.exportString(XMLPreferenceImportStringCaller(importer));
importer.popElement(epair_element.name());
importer.write("\n", 1);
}
importer.popElement(qpref_element.name());
importer.write("\n", 1);
}
};
class XMLPreferenceDictionaryImporter : public XMLImporter {
struct xml_state_t {
enum ETag {
tag_qpref,
tag_qpref_ignore,
tag_epair,
tag_epair_ignore
};
xml_state_t(ETag tag)
: m_tag(tag)
{
}
ETag m_tag;
CopiedString m_name;
StringOutputStream m_ostream;
};
typedef std::vector<xml_state_t> xml_stack_t;
xml_stack_t m_xml_stack;
typedef PreferenceDictionary PreferenceEntries;
PreferenceEntries &m_preferences;
Version m_version;
public:
XMLPreferenceDictionaryImporter(PreferenceDictionary &preferences, const char *version)
: m_preferences(preferences), m_version(version_parse(version))
{
}
void pushElement(const XMLElement &element)
{
if (m_xml_stack.empty()) {
if (string_equal(element.name(), "qpref")) {
Version dataVersion(version_parse(element.attribute("version")));
if (!version_compatible(m_version, dataVersion)) {
globalOutputStream() << "qpref import: data version " << dataVersion
<< " is not compatible with code version " << m_version << "\n";
m_xml_stack.push_back(xml_state_t::tag_qpref_ignore);
} else {
globalOutputStream() << "qpref import: data version " << dataVersion
<< " is compatible with code version " << m_version << "\n";
m_xml_stack.push_back(xml_state_t::tag_qpref);
}
} else {
// not valid
}
} else {
switch (m_xml_stack.back().m_tag) {
case xml_state_t::tag_qpref:
if (string_equal(element.name(), "epair")) {
m_xml_stack.push_back(xml_state_t::tag_epair);
m_xml_stack.back().m_name = element.attribute("name");
} else {
// not valid
}
break;
case xml_state_t::tag_qpref_ignore:
if (string_equal(element.name(), "epair")) {
m_xml_stack.push_back(xml_state_t::tag_epair_ignore);
} else {
// not valid
}
break;
case xml_state_t::tag_epair:
case xml_state_t::tag_epair_ignore:
// not valid
break;
}
}
}
void popElement(const char *name)
{
if (m_xml_stack.back().m_tag == xml_state_t::tag_epair) {
m_preferences.importPref(m_xml_stack.back().m_name.c_str(), m_xml_stack.back().m_ostream.c_str());
}
m_xml_stack.pop_back();
}
std::size_t write(const char *buffer, std::size_t length)
{
return m_xml_stack.back().m_ostream.write(buffer, length);
}
};
#endif