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/**
* Copyright © 2019 IBM Corporation
*
* Licensed 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 "hexdump.hpp"
#include <stdio.h>
#include <cstring>
#include <sstream>
#include <string>
namespace openpower
{
namespace pels
{
std::string escapeJSON(const std::string& input)
{
std::string output;
output.reserve(input.length());
for (const auto c : input)
{
switch (c)
{
case '"':
output += "\\\"";
break;
case '/':
output += "\\/";
break;
case '\b':
output += "\\b";
break;
case '\f':
output += "\\f";
break;
case '\n':
output += "\\n";
break;
case '\r':
output += "\\r";
break;
case '\t':
output += "\\t";
break;
case '\\':
output += "\\\\";
break;
default:
output += c;
break;
}
}
return output;
}
char* dumpHex(const void* data, size_t size)
{
const int symbolSize = 100;
char* buffer = (char*)calloc(10 * size, sizeof(char));
char* symbol = (char*)calloc(symbolSize, sizeof(char));
char ascii[17];
size_t i, j;
ascii[16] = '\0';
for (i = 0; i < size; ++i)
{
if (i % 16 == 0)
{
strcat(buffer, "\"");
}
snprintf(symbol, symbolSize, "%02X ", ((unsigned char*)data)[i]);
strcat(buffer, symbol);
memset(symbol, 0, strlen(symbol));
if (((unsigned char*)data)[i] >= ' ' &&
((unsigned char*)data)[i] <= '~')
{
ascii[i % 16] = ((unsigned char*)data)[i];
}
else
{
ascii[i % 16] = '.';
}
if ((i + 1) % 8 == 0 || i + 1 == size)
{
std::string asciiString(ascii);
asciiString = escapeJSON(asciiString);
const char* asciiToPrint = asciiString.c_str();
strcat(buffer, " ");
if ((i + 1) % 16 == 0)
{
if (i + 1 != size)
{
snprintf(symbol, symbolSize, "| %s\", \n ", asciiToPrint);
}
else
{
snprintf(symbol, symbolSize, "| %s\" \n ", asciiToPrint);
}
strcat(buffer, symbol);
memset(symbol, 0, strlen(symbol));
}
else if (i + 1 == size)
{
ascii[(i + 1) % 16] = '\0';
if ((i + 1) % 16 <= 8)
{
strcat(buffer, " ");
}
for (j = (i + 1) % 16; j < 16; ++j)
{
strcat(buffer, " ");
}
std::string asciiString2(ascii);
asciiString2 = escapeJSON(asciiString2);
asciiToPrint = asciiString2.c_str();
snprintf(symbol, symbolSize, "| %s\" \n ", asciiToPrint);
strcat(buffer, symbol);
memset(symbol, 0, strlen(symbol));
}
}
}
free(symbol);
return buffer;
}
} // namespace pels
} // namespace openpower