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Index: trunk/npstat/nm/vectorAsText.hh
===================================================================
--- trunk/npstat/nm/vectorAsText.hh (revision 878)
+++ trunk/npstat/nm/vectorAsText.hh (revision 879)
@@ -1,123 +1,122 @@
#ifndef NPSTAT_VECTORASTEXT_HH_
#define NPSTAT_VECTORASTEXT_HH_
/*!
// \file vectorAsText.hh
//
// \brief Utilities for reading/writing std::vector objects from/to text files
//
// Author: I. Volobouev
//
// January 2023
*/
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <climits>
namespace npstat {
/**
// Function for dumping vectors into text files, one element per line.
//
// Note that, while this function will work with T objects that do
// not have default constructors, it will not be possible to read
// such objects back.
//
// "true" is returned on success, "false" on failure.
// Dumping less than "nElementsToDump" elements is considered
// a success.
*/
template <typename T>
bool dumpVectorAsText(const std::vector<T>& v,
std::ostream& asciiStream,
const unsigned long firstElementToDump=0,
const unsigned long nElementsToDump=ULONG_MAX)
{
if (nElementsToDump)
{
const unsigned long sz = v.size();
if (firstElementToDump < sz)
{
unsigned long ndumped = 0;
for (unsigned long i=firstElementToDump;
i<sz && ndumped<nElementsToDump; ++i, ++ndumped)
asciiStream << v[i] << '\n';
if (asciiStream.fail())
return false;
}
}
return true;
}
/**
// Function for filling vectors from text files, one element per line.
// Will only work with T objects that have default constructors.
// "true" is returned on success, "false" on failure.
//
// Empty lines, lines which consist of pure white space, and lines
// which start with an arbitrary amount of white space (including
// none) followed by '#' are ignored (considered comments).
*/
template <typename T>
bool fillVectorFromText(std::istream& asciiStream,
std::vector<T>* v,
const unsigned long maxElementsToFill=ULONG_MAX)
{
bool status = true;
if (maxElementsToFill && asciiStream)
{
assert(v);
std::string linebuf;
std::istringstream is;
unsigned long nfilled = 0;
T buffer;
while (asciiStream && status && nfilled<maxElementsToFill)
{
std::getline(asciiStream, linebuf);
const unsigned long len = linebuf.size();
if (len == 0UL)
continue;
// Ignore lines which are pure white space
// or which start with an arbitrary number
// of white space characters followed by #.
bool isComment = false;
bool allSpace = true;
char* line = &linebuf[0];
- for (unsigned long i=0; i<len; ++i)
+ for (unsigned long i=0; i<len && allSpace; ++i)
{
if (isspace(line[i]))
continue;
if (allSpace && line[i] == '#')
{
isComment = true;
break;
}
allSpace = false;
- break;
}
if (isComment || allSpace)
continue;
is.str(linebuf);
is.clear();
is >> buffer;
if (is.fail())
status = false;
else
v->push_back(buffer);
if ((asciiStream.fail() && !asciiStream.eof()) ||
asciiStream.bad())
status = false;
}
}
return status;
}
}
#endif // NPSTAT_VECTORASTEXT_HH_

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