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/**
* @file llemojidictionary.cpp
* @brief Implementation of LLEmojiDictionary
*
* $LicenseInfo:firstyear=2014&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2014, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "lldir.h"
#include "llemojidictionary.h"
#include "llsdserialize.h"
#include <boost/algorithm/string.hpp>
#include <boost/range/adaptor/filtered.hpp>
#include <boost/range/algorithm/transform.hpp>
// ============================================================================
// Constants
//
constexpr char SKINNED_EMOJI_FILENAME[] = "emoji_characters.xml";
// ============================================================================
// Helper functions
//
template<class T>
std::list<T> llsd_array_to_list(const LLSD& sd, std::function<void(T&)> mutator = {});
template<>
std::list<std::string> llsd_array_to_list(const LLSD& sd, std::function<void(std::string&)> mutator)
{
std::list<std::string> result;
for (LLSD::array_const_iterator it = sd.beginArray(), end = sd.endArray(); it != end; ++it)
{
const LLSD& entry = *it;
if (!entry.isString())
continue;
result.push_back(entry.asStringRef());
if (mutator)
{
mutator(result.back());
}
}
return result;
}
LLEmojiDescriptor::LLEmojiDescriptor(const LLSD& descriptor_sd)
{
Name = descriptor_sd["Name"].asStringRef();
const LLWString emoji_string = utf8str_to_wstring(descriptor_sd["Character"].asString());
Character = (1 == emoji_string.size()) ? emoji_string[0] : L'\0'; // We don't currently support character composition
auto toLower = [](std::string& str) { LLStringUtil::toLower(str); };
ShortCodes = llsd_array_to_list<std::string>(descriptor_sd["ShortCodes"], toLower);
Categories = llsd_array_to_list<std::string>(descriptor_sd["Categories"], toLower);
if (Name.empty())
{
Name = ShortCodes.front();
}
}
bool LLEmojiDescriptor::isValid() const
{
return
Character &&
!ShortCodes.empty() &&
!Categories.empty();
}
struct emoji_filter_base
{
emoji_filter_base(const std::string& needle)
{
// Search without the colon (if present) so the user can type ':food' and see all emojis in the 'Food' category
mNeedle = (boost::starts_with(needle, ":")) ? needle.substr(1) : needle;
LLStringUtil::toLower(mNeedle);
}
protected:
std::string mNeedle;
};
struct emoji_filter_shortcode_or_category_contains : public emoji_filter_base
{
emoji_filter_shortcode_or_category_contains(const std::string& needle) : emoji_filter_base(needle) {}
bool operator()(const LLEmojiDescriptor& descr) const
{
for (const auto& short_code : descr.ShortCodes)
{
if (boost::icontains(short_code, mNeedle))
return true;
}
for (const auto& category : descr.Categories)
{
if (boost::icontains(category, mNeedle))
return true;
}
return false;
}
};
// ============================================================================
// LLEmojiDictionary class
//
LLEmojiDictionary::LLEmojiDictionary()
{
}
// static
void LLEmojiDictionary::initClass()
{
LLEmojiDictionary* pThis = &LLEmojiDictionary::initParamSingleton();
LLSD data;
const std::string filename = gDirUtilp->findSkinnedFilenames(LLDir::XUI, SKINNED_EMOJI_FILENAME, LLDir::CURRENT_SKIN).front();
llifstream file(filename.c_str());
if (file.is_open())
{
LL_DEBUGS() << "Loading emoji characters file at " << filename << LL_ENDL;
LLSDSerialize::fromXML(data, file);
}
if (data.isUndefined())
{
LL_WARNS() << "Emoji file characters missing or ill-formed" << LL_ENDL;
return;
}
for (LLSD::array_const_iterator descriptor_it = data.beginArray(), descriptor_end = data.endArray(); descriptor_it != descriptor_end; ++descriptor_it)
{
LLEmojiDescriptor descriptor(*descriptor_it);
if (!descriptor.isValid())
{
LL_WARNS() << "Skipping invalid emoji descriptor " << descriptor.Character << LL_ENDL;
continue;
}
pThis->addEmoji(std::move(descriptor));
}
}
LLWString LLEmojiDictionary::findMatchingEmojis(const std::string& needle) const
{
LLWString result;
boost::transform(mEmojis | boost::adaptors::filtered(emoji_filter_shortcode_or_category_contains(needle)),
std::back_inserter(result), [](const auto& descr) { return descr.Character; });
return result;
}
std::string LLEmojiDictionary::getNameFromEmoji(llwchar ch)
{
const auto it = mEmoji2Descr.find(ch);
return (mEmoji2Descr.end() != it) ? it->second->Name : LLStringUtil::null;
}
void LLEmojiDictionary::addEmoji(LLEmojiDescriptor&& descr)
{
mEmojis.push_back(descr);
const LLEmojiDescriptor& back = mEmojis.back();
mEmoji2Descr.insert(std::make_pair(descr.Character, &back));
}
// ============================================================================
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