Mercurial > hg > svcore
view base/Extents.h @ 1854:bde22957545e
Add support for doubling escapes for quotes in quoted texts in CSV-like formats on import (similar to how we, and the relevant RFC, do escaping on export now)
author | Chris Cannam |
---|---|
date | Mon, 11 May 2020 14:43:58 +0100 |
parents | 1b688ab5f1b3 |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef SV_EXTENTS_H #define SV_EXTENTS_H #include <vector> /** * Maintain a min and max value, and update them when supplied a new * data point. */ template <typename T> class Extents { public: Extents() : m_min(T()), m_max(T()) { } Extents(T min, T max) : m_min(min), m_max(max) { } bool operator==(const Extents &r) { return r.m_min == m_min && r.m_max == m_max; } bool operator!=(const Extents &r) { return !(*this == r); } bool isSet() const { return (m_min != T() || m_max != T()); } void set(T min, T max) { m_min = min; m_max = max; if (m_max < m_min) m_max = m_min; } void reset() { m_min = T(); m_max = T(); } bool sample(T f) { bool changed = false; if (isSet()) { if (f < m_min) { m_min = f; changed = true; } if (f > m_max) { m_max = f; changed = true; } } else { m_max = m_min = f; changed = true; } return changed; } template <typename Alloc> bool sample(const std::vector<T, Alloc> &ff) { bool changed = false; for (auto f: ff) { if (sample(f)) { changed = true; } } return changed; } bool sample(const Extents &r) { bool changed = false; if (isSet()) { if (r.m_min < m_min) { m_min = r.m_min; changed = true; } if (r.m_max > m_max) { m_max = r.m_max; changed = true; } } else { m_min = r.m_min; m_max = r.m_max; changed = true; } return changed; } T getMin() const { return m_min; } T getMax() const { return m_max; } private: T m_min; T m_max; }; #endif