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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/Msg.h"
#include <algorithm>
#include <string>
namespace qpid {
using namespace std;
struct NonPrint { bool operator()(unsigned char c) { return !isprint(c) && !isspace(c); } };
const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
std::string quote(const std::string& str) {
NonPrint nonPrint;
size_t n = std::count_if(str.begin(), str.end(), nonPrint);
if (n==0) return str;
std::string ret;
ret.reserve(str.size()+2*n); // Avoid extra allocations.
for (string::const_iterator i = str.begin(); i != str.end(); ++i) {
if (nonPrint(*i)) {
ret.push_back('\\');
ret.push_back('x');
ret.push_back(hex[((*i) >> 4)&0xf]);
ret.push_back(hex[(*i) & 0xf]);
}
else ret.push_back(*i);
}
return ret;
}
// Quote the string so messages with null characters are preserved, e.g. messages with XIDs */
std::string Msg::str() const {
return quote(os.str());
}
} // namespace qpid
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