[bercedev]

Closes #137

XMLTag::value(std::vector<std::string>&) (and the overload that takes a count) split the tag value at commas but kept the whitespace around each item. <PartList> is the only place that reads a string list this way. A list written as Part1, Part2 asked for a part named Part2, FEBModel::BuildPart couldn't find that domain, and the model stopped with "Failed building parts."

Both overloads now take each item through a small listItem helper that trims spaces, tabs and line breaks around it. Spaces inside a name are kept. The helper builds a std::string, so items are no longer copied through the fixed char tmp[256] buffer, which overflowed for a name longer than 255 characters.

Testing

I didn't build all of FEBio or run a contact model. I compiled FECore/XMLReader.cpp with a small program (g++ 14, -std=c++17) that reads a <PartList> through XMLReader::OpenString and checks both overloads:

int main()
{
	int fails = 0;
	fails += check("Part1,Part2,Part3", {"Part1", "Part2", "Part3"});
	fails += check("Part1, Part2, Part3", {"Part1", "Part2", "Part3"});
	fails += check(" Part1 ,\tPart2 ,  Part3 ", {"Part1", "Part2", "Part3"});
	fails += check("Part1,Part2,Part with spaces", {"Part1", "Part2", "Part with spaces"});
	return fails;
}

With this change:

ok   [Part1,Part2,Part3] -> 'Part1' 'Part2' 'Part3'
ok   [Part1, Part2, Part3] -> 'Part1' 'Part2' 'Part3'
ok   [ Part1 ,	Part2 ,  Part3 ] -> 'Part1' 'Part2' 'Part3'
ok   [Part1,Part2,Part with spaces] -> 'Part1' 'Part2' 'Part with spaces'

On develop:

ok   [Part1,Part2,Part3] -> 'Part1' 'Part2' 'Part3'
FAIL [Part1, Part2, Part3] -> 'Part1' ' Part2' ' Part3'
FAIL [ Part1 ,	Part2 ,  Part3 ] -> ' Part1 ' ' Part2 ' '  Part3 '
ok   [Part1,Part2,Part with spaces] -> 'Part1' 'Part2' 'Part with spaces'

Note: I used Claude Code while working on this.