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/***********************************************/
/**
* @file loopFileAscii.h
*
* @brief Loop over list of strings from files.
*
* @author Torsten Mayer-Guerr
* @author Sebastian Strasser
* @date 2017-01-27
*
*/
/***********************************************/
#ifndef __GROOPS_LOOPFILEASCII__
#define __GROOPS_LOOPFILEASCII__
// Latex documentation
#ifdef DOCSTRING_Loop
static const char *docstringLoopFileAscii = R"(
\subsection{FileAscii}
Loop over list of strings from files.
)";
#endif
/***********************************************/
#include "base/import.h"
#include "files/fileStringTable.h"
#include "classes/loop/loop.h"
#include <unordered_set>
/***** CLASS ***********************************/
/** @brief Loop over list of strings from files.
* @ingroup loopGroup
* @see Loop */
class LoopFileAscii : public Loop
{
std::string nameString, nameIndex, nameCount;
std::vector<std::string> strings;
public:
LoopFileAscii(Config &config);
UInt count() const override {return strings.size();}
Bool iteration(VariableList &varList) override;
};
/***********************************************/
/***** Inlines *********************************/
/***********************************************/
inline LoopFileAscii::LoopFileAscii(Config &config)
{
try
{
std::vector<FileName> fileName;
UInt startIndex;
UInt countElements = MAX_UINT;
Bool sort;
Bool removeDuplicates;
readConfig(config, "inputfile", fileName, Config::MUSTSET, "", "simple ASCII file with strings (separated by whitespace)");
readConfig(config, "sort", sort, Config::DEFAULT, "0", "sort entries alphabetically (ascending)");
readConfig(config, "removeDuplicates", removeDuplicates, Config::DEFAULT, "0", "remove duplicate entries (order is preserved)");
readConfig(config, "startIndex", startIndex, Config::DEFAULT, "0", "start at element startIndex (counting from 0)");
readConfig(config, "count", countElements, Config::OPTIONAL, "", "use count elements (default: use all)");
readConfig(config, "variableLoopString", nameString, Config::OPTIONAL, "loopString", "name of the variable to be replaced");
readConfig(config, "variableLoopIndex", nameIndex, Config::OPTIONAL, "", "variable with index of current iteration (starts with zero)");
readConfig(config, "variableLoopCount", nameCount, Config::OPTIONAL, "", "variable with total number of iterations");
readConfigCondition(config);
if(isCreateSchema(config)) return;
for(UInt i=0; i<fileName.size(); i++)
{
std::vector<std::string> str;
readFileStringList(fileName.at(i), str);
strings.insert(strings.end(), str.begin(), str.end());
}
if(sort)
std::sort(strings.begin(), strings.end());
if(removeDuplicates)
{
std::unordered_set<std::string> set;
auto end = std::copy_if(strings.begin(), strings.end(), strings.begin(), [&set](auto &s) {return set.insert(s).second;});
strings.erase(end, strings.end());
}
strings.erase(strings.begin(), strings.begin()+std::min(startIndex, strings.size()));
strings.erase(strings.begin()+std::min(countElements, strings.size()), strings.end());
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
inline Bool LoopFileAscii::iteration(VariableList &varList)
{
if(index() >= count())
return FALSE;
if(!nameString.empty()) varList.setVariable(nameString, strings.at(index()));
if(!nameIndex.empty()) varList.setVariable(nameIndex, index());
if(!nameCount.empty()) varList.setVariable(nameCount, count());
return checkCondition(varList);
}
/***********************************************/
#endif
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