Trim Version When Parsing (#4554)

When parsing a version, it may be possible that a publisher included one
or more whitespace characters at the end of the DisplayVersion key.
Since a folder name cannot end with a whitespace character, this means
that any PackageVersion in the community repository cannot have a
trailing whitespace character.

Due to the way versions are parsed, the trailing whitespace gets
considered as an "other" of the version part during the version
comparison. This means that `5.8 ` is considered a lower version than
`5.8` when parsed.

This PR makes it so that when a version is assigned, as is the case when
parsing the installed versions, both the final version and the version
parts are trimmed of whitespace. This means that `5.0.13` is now
considered equal to `5.0 .13`, `5.0.13 `, or even ` 5 . 0 .13 `

src/AppInstallerSharedLib/Versions.cpp

@@ -41,7 +41,7 @@ namespace AppInstaller::Utility
 
     void Version::Assign(std::string version, std::string_view splitChars)
     {
-        m_version = std::move(version);
+        m_version = std::move(Utility::Trim(version));
 
         // Process approximate comparator if applicable
         std::string baseVersion = m_version;
@@ -281,17 +281,18 @@ namespace AppInstaller::Utility
 
     Version::Part::Part(const std::string& part)
     {
-        const char* begin = part.c_str();
+        std::string interimPart = Utility::Trim(part.c_str());
+        const char* begin = interimPart.c_str();
         char* end = nullptr;
         errno = 0;
         Integer = strtoull(begin, &end, 10);
 
         if (errno == ERANGE)
         {
             Integer = 0;
-            Other = part;
+            Other = interimPart;
         }
-        else if (static_cast<size_t>(end - begin) != part.length())
+        else if (static_cast<size_t>(end - begin) != interimPart.length())
         {
             Other = end;
         }
@@ -300,7 +301,7 @@ namespace AppInstaller::Utility
     }
 
     Version::Part::Part(uint64_t integer, std::string other) :
-        Integer(integer), Other(std::move(other))
+        Integer(integer), Other(std::move(Utility::Trim(other)))
     {
         m_foldedOther = Utility::FoldCase(static_cast<std::string_view>(Other));
     }
@@ -468,7 +469,7 @@ namespace AppInstaller::Utility
         THROW_HR_IF(E_INVALIDARG, splitChars != DefaultSplitChars);
 
         // First split off any trailing build metadata
-        std::string interimVersion = version;
+        std::string interimVersion = Utility::Trim(version);
         size_t buildMetadataPos = interimVersion.find('+', 0);
 
         if (buildMetadataPos != std::string::npos)