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Datafile: Implemented ::commit

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This commit is contained in:
Paul Beckingham 2016-03-21 18:54:32 -04:00
parent 13e5736cd6
commit 69d80bc2bb
1 changed files with 41 additions and 0 deletions
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41
src/Datafile.cpp
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@ -103,9 +103,50 @@ void Datafile::modifyInterval (const Interval& interval)
////////////////////////////////////////////////////////////////////////////////
void Datafile::commit ()
{
// The _dirty flag indicates that the file needs to be written.
if (_dirty)
{
// Special case: added but no modified means just append to the file.
if (! _lines_modified.size () &&
_lines_added.size ())
{
if (_file.open ())
{
_file.lock ();
// Write out all the added intervals.
_file.append (std::string("")); // Seek to end of file
// Write out all the added lines.
_file.append (_lines_added);
_lines_added.clear ();
_file.close ();
_dirty = false;
}
}
else
{
if (_file.open ())
{
_file.lock ();
// Truncate the file and rewrite.
_file.truncate ();
_file.append (std::string("")); // Seek to end of file
for (auto& line : _lines)
_file.write_raw (line + "\n");
// Write out all the added lines.
_file.append (_lines_added);
_lines_added.clear ();
_file.close ();
_dirty = false;
}
}
_dirty = false;
}