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/**
* @file
* @author 2016 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* 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.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include "String.h"
#include <sstream>
#include <boost/algorithm/string.hpp>
namespace uscxml {
#define ISWHITESPACE(char) (isspace(char))
std::string escapeMacro(std::string const &s) {
// inspired by http://stackoverflow.com/questions/2417588/escaping-a-c-string
std::string returnValue="";
std::string specialChars="";
for (std::string::const_iterator iter = s.begin(), end = s.end(); iter != end; ++iter) {
char c = *iter;
if (('0' <= c && c <= '9') || ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z') || c == '_') {
returnValue += c;
}
else {
specialChars += c;
}
}
if (!specialChars.empty()){
// http://www.cplusplus.com/reference/functional/hash/
// returns the same result for a given string within one execution
std::hash<std::string> strHash;
returnValue += "_";
returnValue += strHash(specialChars);
}
return returnValue;
}
std::list<std::string> tokenize(const std::string& line, const char sep, bool trimWhiteSpace) {
std::list<std::string> tokens;
// appr. 3x faster than stringstream
size_t start = 0;
for (size_t i = 0; i < line.size(); i++) {
if (line[i] == sep || (trimWhiteSpace && ISWHITESPACE(line[i]))) {
if (i > 0 && start < i) {
tokens.push_back(line.substr(start, i - start));
}
while(line[i] == sep || (trimWhiteSpace && ISWHITESPACE(line[i]))) {
i++; // skip multiple occurences of seperator and whitespaces
}
start = i;
} else if (i + 1 == line.size()) {
tokens.push_back(line.substr(start, i + 1 - start));
}
}
return tokens;
}
std::string spaceNormalize(const std::string& text) {
std::stringstream content;
#if 1
// 195ms with test-performance-events.scml
std::string seperator;
size_t start = 0;
for (size_t i = 0; i < text.size(); i++) {
if (isspace(text[i])) {
if (i > 0 && start < i) {
content << seperator << text.substr(start, i - start);
seperator = " ";
}
while(isspace(text[++i])); // skip whitespaces
start = i;
} else if (i + 1 == text.size()) {
content << seperator << text.substr(start, i + 1 - start);
}
}
// std::cerr << ">>" << content.str() << "<<" << std::endl;
#else
// 291ms with test-performance-events.scml
std::istringstream iss(text);
std::string seperator;
do {
std::string token;
iss >> token;
if (token.length() > 0) {
content << seperator << token;
seperator = " ";
}
} while (iss);
#endif
return content.str();
}
// see: http://www.w3.org/TR/scxml/#EventDescriptors
bool nameMatch(const std::string& eventDescs, const std::string& eventName) {
#if 1
if(eventDescs.length() == 0 || eventName.length() == 0)
return false;
// naive case of single descriptor and exact match
if (boost::iequals(eventDescs, eventName))
return true;
size_t start = 0;
std::string eventDesc;
for (size_t i = 0; i < eventDescs.size(); i++) {
if (isspace(eventDescs[i])) {
if (i > 0 && start < i - 1) {
eventDesc = eventDescs.substr(start, i - start);
}
while(isspace(eventDescs[++i])); // skip whitespaces
start = i;
} else if (i + 1 == eventDescs.size()) {
eventDesc = eventDescs.substr(start, i + 1 - start);
}
if (eventDesc.size() > 0) {
// remove optional trailing .* for CCXML compatibility
if (eventDesc.find("*", eventDesc.size() - 1) != std::string::npos)
eventDesc = eventDesc.substr(0, eventDesc.size() - 1);
if (eventDesc.find(".", eventDesc.size() - 1) != std::string::npos)
eventDesc = eventDesc.substr(0, eventDesc.size() - 1);
// was eventDesc the * wildcard
if (eventDesc.size() == 0)
return true;
// eventDesc has to be a real prefix of event now and therefore shorter
if (eventDesc.size() > eventName.size())
goto NEXT_DESC;
// are they already equal?
if (boost::iequals(eventDesc, eventName))
return true;
if (eventName.find(eventDesc) == 0) {
if (eventName.find(".", eventDesc.size()) == eventDesc.size())
return true;
}
NEXT_DESC:
eventDesc = "";
}
}
return false;
#else
const char* dPtr = eventDescs.c_str();
const char* ePtr = eventName.c_str();
while(*dPtr != 0) {
if (*dPtr == '*' && *ePtr != 0) // something following
return true;
// descriptor differs from event name
if (*dPtr != *ePtr) {
// move to next descriptor
while(*dPtr != ' ' && *dPtr != 0) {
dPtr++;
}
if (*dPtr == 0)
return false;
dPtr++;
ePtr = eventName.c_str();
} else {
// move both pointers one character
dPtr++;
ePtr++;
}
// descriptor is done, return match
if (((*dPtr == 0 || *dPtr == ' ') && (*ePtr == 0 || *ePtr == ' ')) || // exact match, end of string
(*dPtr == ' ' && *ePtr == '.') || (*dPtr == 0 && *ePtr == '.')) // prefix match
return true;
}
return false;
#endif
}
}
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