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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ * versionstr.cc
+ *
+ * Wed Jul 22 11:41:32 CEST 2009
+ * Copyright 2009 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "versionstr.h"
+
+#include <memory.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+// Workaround - major, minor and patch are defined as macros when using _GNU_SOURCES
+#ifdef major
+#undef major
+#endif
+#ifdef minor
+#undef minor
+#endif
+#ifdef patch
+#undef patch
+#endif
+
+VersionStr::VersionStr(std::string v) throw(const char *)
+{
+ memset(version, 0, sizeof(version));
+ set(v);
+}
+
+VersionStr::VersionStr(size_t major, size_t minor, size_t patch)
+{
+ version[0] = major;
+ version[1] = minor;
+ version[2] = patch;
+}
+
+void VersionStr::set(std::string v) throw(const char *)
+{
+ std::string num;
+ size_t idx = 0;
+ for(size_t i = 0; i < v.length(); i++) {
+ if(v[i] == '.') {
+ if(idx > 2) throw "Version string is too long.";
+ version[idx] = atoi(num.c_str());
+ idx++;
+ num = "";
+ } else if(v[i] >= '0' && v[i] <= '9') {
+ num.append(1, v[i]);
+ } else {
+ throw "Version string contains illegal character.";
+ }
+ }
+ if(idx > 2) throw "Version string is too long.";
+ version[idx] = atoi(num.c_str());
+}
+
+VersionStr::operator std::string() const
+{
+ std::string v;
+ char *buf;
+ size_t sz;
+ if(patch()) sz = asprintf(&buf, "%d.%d.%d", major(), minor(), patch());
+ else sz = asprintf(&buf, "%d.%d", major(), minor());
+ if(sz) v = buf;
+ free(buf);
+ return v;
+}
+
+void VersionStr::operator=(std::string v) throw(const char *)
+{
+ set(v);
+}
+
+// return a - b simplified as -1, 0 or 1
+static int vdiff(const VersionStr &a, const VersionStr &b)
+{
+ if(a.major() < b.major()) return -1;
+ if(a.major() > b.major()) return 1;
+ if(a.minor() < b.minor()) return -1;
+ if(a.minor() > b.minor()) return 1;
+ if(a.patch() < b.patch()) return -1;
+ if(a.patch() > b.patch()) return 1;
+ return 0;
+}
+
+bool VersionStr::operator<(const VersionStr &other) const
+{
+ if(vdiff(*this, other) == -1) return true;
+ return false;
+}
+
+bool VersionStr::operator>(const VersionStr &other) const
+{
+ if(vdiff(*this, other) == 1) return true;
+ return false;
+}
+
+bool VersionStr::operator==(const VersionStr &other) const
+{
+ if(vdiff(*this, other) == 0) return true;
+ return false;
+}
+
+bool VersionStr::operator<=(const VersionStr &other) const
+{
+ if(vdiff(*this, other) != 1) return true;
+ return false;
+}
+
+bool VersionStr::operator>=(const VersionStr &other) const
+{
+ if(vdiff(*this, other) != -1) return true;
+ return false;
+}
+
+size_t VersionStr::major() const
+{
+ return version[0];
+}
+
+size_t VersionStr::minor() const
+{
+ return version[1];
+}
+
+size_t VersionStr::patch() const
+{
+ return version[2];
+}