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/*
* Copyright (c) 2013-2017 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swift/Controllers/Chat/ChatMessageParser.h>
#include <algorithm>
#include <memory>
#include <utility>
#include <vector>
#include <boost/algorithm/string.hpp>
#include <boost/regex.hpp>
#include <Swiften/Base/Regex.h>
#include <Swiften/Base/String.h>
#include <SwifTools/Linkify.h>
namespace Swift {
ChatMessageParser::ChatMessageParser(const std::map<std::string, std::string>& emoticons, std::shared_ptr<HighlightConfiguration> highlightConfiguration, Mode mode) : emoticons_(emoticons), highlightConfiguration_(highlightConfiguration), mode_(mode) {
}
typedef std::pair<std::string, std::string> StringPair;
ChatWindow::ChatMessage ChatMessageParser::parseMessageBody(const std::string& body, const std::string& senderNickname, bool senderIsSelf) {
ChatWindow::ChatMessage parsedMessage;
std::string remaining = body;
if (boost::starts_with(body, "/me ")) {
remaining = String::getSplittedAtFirst(body, ' ').second;
parsedMessage.setIsMeCommand(true);
}
/* Parse one, URLs */
while (!remaining.empty()) {
bool found = false;
std::pair<std::vector<std::string>, size_t> links = Linkify::splitLink(remaining);
remaining = "";
for (size_t i = 0; i < links.first.size(); i++) {
const std::string& part = links.first[i];
if (found) {
// Must be on the last part, then
remaining = part;
}
else {
if (i == links.second) {
found = true;
parsedMessage.append(std::make_shared<ChatWindow::ChatURIMessagePart>(part));
}
else {
parsedMessage.append(std::make_shared<ChatWindow::ChatTextMessagePart>(part));
}
}
}
}
/* do emoticon substitution */
parsedMessage = emoticonHighlight(parsedMessage);
if (!senderIsSelf) { /* do not highlight our own messsages */
// Highlight keywords and own mentions.
parsedMessage = splitHighlight(parsedMessage);
// Highlight full message events like, specific sender, general
// incoming group message, or general incoming direct message.
parsedMessage = fullMessageHighlight(parsedMessage, senderNickname);
}
return parsedMessage;
}
ChatWindow::ChatMessage ChatMessageParser::emoticonHighlight(const ChatWindow::ChatMessage& message) {
ChatWindow::ChatMessage parsedMessage = message;
std::string regexString;
/* Parse two, emoticons */
for (StringPair emoticon : emoticons_) {
/* Construct a regexp that finds an instance of any of the emoticons inside a group
* at the start or end of the line, or beside whitespace.
*/
regexString += regexString.empty() ? "" : "|";
std::string escaped = "(" + Regex::escape(emoticon.first) + ")";
regexString += "^" + escaped + "|";
regexString += escaped + "$|";
regexString += "\\s" + escaped + "|";
regexString += escaped + "\\s";
}
if (!regexString.empty()) {
regexString += "";
boost::regex emoticonRegex(regexString);
ChatWindow::ChatMessage newMessage;
for (const auto& part : parsedMessage.getParts()) {
std::shared_ptr<ChatWindow::ChatTextMessagePart> textPart;
if ((textPart = std::dynamic_pointer_cast<ChatWindow::ChatTextMessagePart>(part))) {
try {
boost::match_results<std::string::const_iterator> match;
const std::string& text = textPart->text;
std::string::const_iterator start = text.begin();
while (regex_search(start, text.end(), match, emoticonRegex)) {
int matchIndex = 0;
for (matchIndex = 1; matchIndex < static_cast<int>(match.size()); matchIndex++) {
if (match[matchIndex].length() > 0) {
//This is the matching subgroup
break;
}
}
std::string::const_iterator matchStart = match[matchIndex].first;
std::string::const_iterator matchEnd = match[matchIndex].second;
if (start != matchStart) {
/* If we're skipping over plain text since the previous emoticon, record it as plain text */
newMessage.append(std::make_shared<ChatWindow::ChatTextMessagePart>(std::string(start, matchStart)));
}
std::shared_ptr<ChatWindow::ChatEmoticonMessagePart> emoticonPart = std::make_shared<ChatWindow::ChatEmoticonMessagePart>();
std::string matchString = match[matchIndex].str();
std::map<std::string, std::string>::const_iterator emoticonIterator = emoticons_.find(matchString);
assert (emoticonIterator != emoticons_.end());
const StringPair& emoticon = *emoticonIterator;
emoticonPart->imagePath = emoticon.second;
emoticonPart->alternativeText = emoticon.first;
newMessage.append(emoticonPart);
start = matchEnd;
}
if (start != text.end()) {
/* If there's plain text after the last emoticon, record it */
newMessage.append(std::make_shared<ChatWindow::ChatTextMessagePart>(std::string(start, text.end())));
}
}
catch (const std::runtime_error&) {
/* Basically too expensive to compute the regex results and it gave up, so pass through as text */
newMessage.append(part);
}
}
else {
newMessage.append(part);
}
}
parsedMessage.setParts(newMessage.getParts());
}
return parsedMessage;
}
ChatWindow::ChatMessage ChatMessageParser::splitHighlight(const ChatWindow::ChatMessage& message) {
auto keywordToRegEx = [](const std::string& keyword, bool matchCaseSensitive) {
std::string escaped = Regex::escape(keyword);
boost::regex::flag_type flags = boost::regex::normal;
if (!matchCaseSensitive) {
flags |= boost::regex::icase;
}
return boost::regex("\\b" + escaped + "\\b", flags);
};
auto highlightKeywordInChatMessage = [&](const ChatWindow::ChatMessage& message, const std::string& keyword, bool matchCaseSensitive, const HighlightAction& action) {
ChatWindow::ChatMessage resultMessage;
for (const auto& part : message.getParts()) {
std::shared_ptr<ChatWindow::ChatTextMessagePart> textPart;
if ((textPart = std::dynamic_pointer_cast<ChatWindow::ChatTextMessagePart>(part))) {
try {
boost::match_results<std::string::const_iterator> match;
const std::string& text = textPart->text;
std::string::const_iterator start = text.begin();
while (regex_search(start, text.end(), match, keywordToRegEx(keyword, matchCaseSensitive))) {
std::string::const_iterator matchStart = match[0].first;
std::string::const_iterator matchEnd = match[0].second;
if (start != matchStart) {
/* If we're skipping over plain text since the previous emoticon, record it as plain text */
resultMessage.append(std::make_shared<ChatWindow::ChatTextMessagePart>(std::string(start, matchStart)));
}
std::shared_ptr<ChatWindow::ChatHighlightingMessagePart> highlightPart = std::make_shared<ChatWindow::ChatHighlightingMessagePart>();
highlightPart->text = match.str();
highlightPart->action = action;
resultMessage.append(highlightPart);
start = matchEnd;
}
if (start != text.end()) {
/* If there's plain text after the last emoticon, record it */
resultMessage.append(std::make_shared<ChatWindow::ChatTextMessagePart>(std::string(start, text.end())));
}
}
catch (const std::runtime_error&) {
/* Basically too expensive to compute the regex results and it gave up, so pass through as text */
resultMessage.append(part);
}
} else {
resultMessage.append(part);
}
}
return resultMessage;
};
ChatWindow::ChatMessage parsedMessage = message;
// detect mentions of own nickname
HighlightAction ownMentionKeywordAction = highlightConfiguration_->ownMentionAction;
ownMentionKeywordAction.setSoundFilePath(boost::optional<std::string>());
ownMentionKeywordAction.setSystemNotificationEnabled(false);
if (!getNick().empty() && !highlightConfiguration_->ownMentionAction.isEmpty()) {
auto nicknameHighlightedMessage = highlightKeywordInChatMessage(parsedMessage, nick_, false, ownMentionKeywordAction);
auto highlightedParts = nicknameHighlightedMessage.getParts();
auto ownNicknamePart = std::find_if(highlightedParts.begin(), highlightedParts.end(), [&](std::shared_ptr<ChatWindow::ChatMessagePart>& part){
auto highlightPart = std::dynamic_pointer_cast<ChatWindow::ChatHighlightingMessagePart>(part);
if (highlightPart && highlightPart->text == nick_) {
return true;
}
return false;
});
if (ownNicknamePart != highlightedParts.end()) {
parsedMessage.setHighlightActionOwnMention(highlightConfiguration_->ownMentionAction);
}
parsedMessage.setParts(nicknameHighlightedMessage.getParts());
}
// detect keywords
for (const auto& keywordHighlight : highlightConfiguration_->keywordHighlights) {
if (keywordHighlight.keyword.empty() || keywordHighlight.action.isEmpty()) {
continue;
}
auto newMessage = highlightKeywordInChatMessage(parsedMessage, keywordHighlight.keyword, keywordHighlight.matchCaseSensitive, keywordHighlight.action);
parsedMessage.setParts(newMessage.getParts());
}
return parsedMessage;
}
ChatWindow::ChatMessage ChatMessageParser::fullMessageHighlight(const ChatWindow::ChatMessage& parsedMessage, const std::string& sender) {
auto fullHighlightedMessage = parsedMessage;
// contact highlighting
for (const auto& contactHighlight : highlightConfiguration_->contactHighlights) {
if (sender == contactHighlight.name) {
fullHighlightedMessage.setHighlightActionSender(contactHighlight.action);
break;
}
}
// general incoming messages
HighlightAction groupAction;
HighlightAction chatAction;
switch (mode_) {
case Mode::GroupChat:
groupAction.setSoundFilePath(highlightConfiguration_->playSoundOnIncomingGroupchatMessages ? boost::optional<std::string>("") : boost::optional<std::string>());
groupAction.setSystemNotificationEnabled(highlightConfiguration_->showNotificationOnIncomingGroupchatMessages);
fullHighlightedMessage.setHighlightActionGroupMessage(groupAction);
break;
case Mode::Chat:
chatAction.setSoundFilePath(highlightConfiguration_->playSoundOnIncomingDirectMessages ? boost::optional<std::string>("") : boost::optional<std::string>());
chatAction.setSystemNotificationEnabled(highlightConfiguration_->showNotificationOnIncomingDirectMessages);
fullHighlightedMessage.setHighlightActonDirectMessage(chatAction);
break;
}
return fullHighlightedMessage;
}
}
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