node_base64encode.cpp
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/*
* Copyright 2002-2015 the original author or authors.
*
* 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
*
* CC/LICENSE
*
* 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 "node_base64encode.h"
NodeBase64Encode::NodeBase64Encode(const uint32_t id, const string& name,
const string& type, const string& desc, const key_map_t& keymap)
: NodeBase(id, name, type, desc, keymap) {
}
NodeBase64Encode::~NodeBase64Encode(void) {
}
std::string base64_encode(const std::string& input)
{
static const char base64_chars[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
std::string result;
int i = 0;
unsigned char char_array_3[3];
const unsigned char* bytes_to_encode = (const unsigned char*)input.c_str();
size_t in_len = input.size();
result.reserve(((in_len + 2) / 3) * 4);
while (in_len--)
{
char_array_3[i++] = *(bytes_to_encode++);
if (i == 3)
{
result.push_back(base64_chars[(char_array_3[0] & 0xfc) >> 2]);
result.push_back(base64_chars[((char_array_3[0] & 0x03) << 4) +
((char_array_3[1] & 0xf0) >> 4)]);
result.push_back(base64_chars[((char_array_3[1] & 0x0f) << 2) +
((char_array_3[2] & 0xc0) >> 6)]);
result.push_back(base64_chars[char_array_3[2] & 0x3f]);
i = 0;
}
}
if (i != 0)
{ // input.size() % 3 != 0
memset(char_array_3 + i, 0, 3 - i);
result.push_back(base64_chars[(char_array_3[0] & 0xfc) >> 2]);
result.push_back(base64_chars[((char_array_3[0] & 0x03) << 4) +
((char_array_3[1] & 0xf0) >> 4)]);
if (i >= 2){
result.push_back(base64_chars[((char_array_3[1] & 0x0f) << 2) +
((char_array_3[2] & 0xc0) >> 6)]);
}
else result.push_back('=');
result.push_back('=');
}
return result;
}
NodeBase* NodeBase64Encode::run(base_script_t* param) {
const char* exit = EXIT_FAIL;
std::string ret = "";
std::string tmp = "";
IVR_TRACE("%s", enter(param->name_var_map).c_str());
map<string, variable_t>::iterator it = param->name_var_map.find(_result);
if (it == param->name_var_map.end()) {
IVR_WARN("未找到返回值变量");
} else {
if (parse_expression(_input, param->name_var_map, ret)) {
if (STRING != it->second.type) {
IVR_WARN("变量%s 的类型不能被编码", _result.c_str());
} else {
tmp = base64_encode(ret);
*(string*)it->second.pvalue = tmp;
exit = EXIT_SUCC;
}
} else {
IVR_WARN("parse assign expression failed(%s)", _input.c_str());
}
}
IVR_TRACE("%s exit from %s(%s)",
leave(param->name_var_map).c_str(), exit, tmp.c_str());
return _exit_node_map[exit];
}
bool NodeBase64Encode::load_other() {
return NodeBase::load_other()
&& valid_str(_key_map, _s_param_input, _input, false)
&& valid_str(_key_map, _s_param_result, _result);
}
const char* NodeBase64Encode::_s_param_input = "input";
const char* NodeBase64Encode::_s_param_result = "result";
std::string NodeBase64Encode::enter(const map<string, variable_t>& vars)const {
ostringstream ostm;
ostm << NodeBase::enter(vars);
ostm << "input:" << _input << ",result:" << _result;
return ostm.str();
}
std::string NodeBase64Encode::leave(const map<string, variable_t>& vars)const {
ostringstream ostm;
ostm << NodeBase::leave(vars);
ostm << "result:" << _result;
return ostm.str();
}