1 files changed, 182 insertions, 0 deletions
diff --git a/xbmc/addons/AddonVersion.cpp b/xbmc/addons/AddonVersion.cpp
new file mode 100644
index 0000000..10b314e
--- /dev/null
+++ b/xbmc/addons/AddonVersion.cpp
@@ -0,0 +1,182 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "AddonVersion.h"
+#include "utils/StringUtils.h"
+#include "utils/log.h"
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+namespace
+{
+// Add-on versions are used e.g. in file names and should
+// not have too much freedom in their accepted characters
+// Things that should be allowed: e.g. 0.1.0~beta3+git010cab3
+// Note that all of these characters are url-safe
+const std::string VALID_ADDON_VERSION_CHARACTERS =
+    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.+_@~";
+} // namespace
+
+namespace ADDON
+{
+CAddonVersion::CAddonVersion(const std::string& version)
+  : mEpoch(0), mUpstream(version.empty() ? "0.0.0" : [&version] {
+      auto versionLowerCase = std::string(version);
+      StringUtils::ToLower(versionLowerCase);
+      return versionLowerCase;
+    }())
+{
+  size_t pos = mUpstream.find(':');
+  if (pos != std::string::npos)
+  {
+    mEpoch = strtol(mUpstream.c_str(), nullptr, 10);
+    mUpstream.erase(0, pos + 1);
+  }
+
+  pos = mUpstream.find('-');
+  if (pos != std::string::npos)
+  {
+    mRevision = mUpstream.substr(pos + 1);
+    if (mRevision.find_first_not_of(VALID_ADDON_VERSION_CHARACTERS) != std::string::npos)
+    {
+      CLog::Log(LOGERROR, "AddonVersion: {} is not a valid revision number", mRevision);
+      mRevision = "";
+    }
+    mUpstream.erase(pos);
+  }
+
+  if (mUpstream.find_first_not_of(VALID_ADDON_VERSION_CHARACTERS) != std::string::npos)
+  {
+    CLog::Log(LOGERROR, "AddonVersion: {} is not a valid version", mUpstream);
+    mUpstream = "0.0.0";
+  }
+}
+
+CAddonVersion::CAddonVersion(const char* version)
+  : CAddonVersion(std::string(version ? version : ""))
+{
+}
+
+/**Compare two components of a Debian-style version.  Return -1, 0, or 1
+   * if a is less than, equal to, or greater than b, respectively.
+   */
+int CAddonVersion::CompareComponent(const char* a, const char* b)
+{
+  while (*a && *b)
+  {
+    while (*a && *b && !isdigit(*a) && !isdigit(*b))
+    {
+      if (*a != *b)
+      {
+        if (*a == '~')
+          return -1;
+        if (*b == '~')
+          return 1;
+        return *a < *b ? -1 : 1;
+      }
+      a++;
+      b++;
+    }
+    if (*a && *b && (!isdigit(*a) || !isdigit(*b)))
+    {
+      if (*a == '~')
+        return -1;
+      if (*b == '~')
+        return 1;
+      return isdigit(*a) ? -1 : 1;
+    }
+
+    char *next_a, *next_b;
+    long int num_a = strtol(a, &next_a, 10);
+    long int num_b = strtol(b, &next_b, 10);
+    if (num_a != num_b)
+      return num_a < num_b ? -1 : 1;
+
+    a = next_a;
+    b = next_b;
+  }
+  if (!*a && !*b)
+    return 0;
+  if (*a)
+    return *a == '~' ? -1 : 1;
+  else
+    return *b == '~' ? 1 : -1;
+}
+
+bool CAddonVersion::operator<(const CAddonVersion& other) const
+{
+  if (mEpoch != other.mEpoch)
+    return mEpoch < other.mEpoch;
+
+  int result = CompareComponent(mUpstream.c_str(), other.mUpstream.c_str());
+  if (result)
+    return (result < 0);
+
+  return (CompareComponent(mRevision.c_str(), other.mRevision.c_str()) < 0);
+}
+
+bool CAddonVersion::operator>(const CAddonVersion& other) const
+{
+  return !(*this <= other);
+}
+
+bool CAddonVersion::operator==(const CAddonVersion& other) const
+{
+  return mEpoch == other.mEpoch &&
+         CompareComponent(mUpstream.c_str(), other.mUpstream.c_str()) == 0 &&
+         CompareComponent(mRevision.c_str(), other.mRevision.c_str()) == 0;
+}
+
+bool CAddonVersion::operator!=(const CAddonVersion& other) const
+{
+  return !(*this == other);
+}
+
+bool CAddonVersion::operator<=(const CAddonVersion& other) const
+{
+  return *this < other || *this == other;
+}
+
+bool CAddonVersion::operator>=(const CAddonVersion& other) const
+{
+  return !(*this < other);
+}
+
+bool CAddonVersion::empty() const
+{
+  return mEpoch == 0 && mUpstream == "0.0.0" && mRevision.empty();
+}
+
+std::string CAddonVersion::asString() const
+{
+  std::string out;
+  if (mEpoch)
+    out = StringUtils::Format("{}:", mEpoch);
+  out += mUpstream;
+  if (!mRevision.empty())
+    out += "-" + mRevision;
+  return out;
+}
+
+bool CAddonVersion::SplitFileName(std::string& ID,
+                                  std::string& version,
+                                  const std::string& filename)
+{
+  size_t dpos = filename.rfind('-');
+  if (dpos == std::string::npos)
+    return false;
+  ID = filename.substr(0, dpos);
+  version = filename.substr(dpos + 1);
+  version = version.substr(0, version.size() - 4);
+
+  return true;
+}
+} // namespace ADDON