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WebSockets: also json-escape strings in state messages

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Luciano Iam 2020-04-22 18:17:13 +02:00 • committed by Robin Gareus
parent 946094b25c
commit dbb26daafa
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7 changed files with 82 additions and 29 deletions
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39
libs/surfaces/websockets/json.cc Normal file
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@ -0,0 +1,39 @@
/*
* Copyright (C) 2020 Luciano Iam <lucianito@gmail.com>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <iomanip>
#include <sstream>
#include "json.h"
/* adapted from https://stackoverflow.com/questions/7724448/simple-json-string-escape-for-c
CC BY-SA 4.0 license */
std::string
Json::escape (const std::string &s) {
std::ostringstream o;
for (std::string::const_iterator it = s.begin(); it != s.end(); ++it) {
if (*it == '"' || *it == '\\' || ('\x00' <= *it && *it <= '\x1f')) {
o << "\\u" << std::hex << std::setw (4) << std::setfill ('0') << static_cast<int>(*it);
} else {
o << *it;
}
}
return o.str ();
}