OneOperatorSpec moved to PsimagLite

#ifndef ONEOPERATORSPEC_H

#define ONEOPERATORSPEC_H

#include "Vector.h"

#include <cstdlib>

namespace PsimagLite {

struct OneOperatorSpec {

	OneOperatorSpec(PsimagLite::String label_)

	    : dof(0),label(label_),transpose(false)

	{

		SizeType lastIndex = label.length();

		if (lastIndex > 0) lastIndex--;

		if (label[lastIndex] == '\'') {

			label = label.substr(0,lastIndex);

			transpose = true;

		}

		label_ = label;

		SizeType i = 0;

		for (; i < label.length(); ++i) {

			if (label[i] == '?') break;

		}

		if (i == label.length()) return;

		if (i + 1 == label.length())

			err("WRONG op. spec. " + label_ + ", nothing after ?\n");

		label = label_.substr(0, i);

		dof = atoi(label_.substr(i + 1, label_.length()).c_str());

	}

	static int extractSiteIfAny(PsimagLite::String& name)

	{

		int firstIndex = -1;

		int lastIndex = -1;

		for (SizeType i = 0; i < name.length(); ++i) {

			if (name[i] == '[') {

				firstIndex = i;

				continue;

			}

			if (name[i] == ']') {

				lastIndex = i;

				continue;

			}

		}

		if (firstIndex < 0 && lastIndex < 0) return -1;

		bool b1 = (firstIndex < 0 && lastIndex >= 0);

		bool b2 = (firstIndex >= 0 && lastIndex < 0);

		if (b1 || b2) {

			PsimagLite::String str("Braket operator ");

			err(name + " has unmatched [ or ]\n");

		}

		PsimagLite::String str = name.substr(0, firstIndex);

		str += name.substr(lastIndex + 1, name.length() - lastIndex);

		int site = atoi(name.substr(firstIndex+1,lastIndex-1).c_str());

		name = str;

		return site;

	}

	SizeType dof;

	PsimagLite::String label;

	bool transpose;

}; // struct OneOperatorSpec

}

#endif // ONEOPERATORSPEC_H