1 files changed, 150 insertions, 0 deletions
diff --git a/src/versionstr.cc b/src/versionstr.cc
new file mode 100644
index 0000000..3ef09e2
--- /dev/null
+++ b/src/versionstr.cc
@@ -0,0 +1,150 @@
+/* -*- 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];
+}