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/* $Id: Source.h,v 1.2 2003/04/21 18:25:32 terpstra Exp $
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* Source.h - Common segment interface
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* Copyright (C) 2002 - Wesley W. Terpstra
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* Authors: 'Wesley W. Terpstra' <wesley@terpstra.ca>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2.1.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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/** One of the database fragments.
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/** The tail of the returned key.
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* The length is for the whole key.
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* The tail includes only what is not compressed.
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* -- these are not initialized till first call of advance
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* The tail MUST be unsigned. Why? Because std::string compares
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* as though it were unsigned. ie: '\0x7f' < '\0x80' even though
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* if it were really lexicographical compare it wouldn't.
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const unsigned char* tail;
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unsigned int dup; // amount in common with last
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/** Advance to the next key in the source.
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* -1 on error, errno = 0 -> eof.
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virtual int advance() = 0;
added
removed
libesort/Source.h
