[vcpkg] Add find/find_installed/is_installed for FeatureSpec

Signed-off-by: Squareys <squareys@googlemail.com>

toolsrc/include/vcpkg/statusparagraphs.h

@@ -20,7 +20,21 @@ namespace vcpkg
         using iterator = container::reverse_iterator;
         using const_iterator = container::const_reverse_iterator;
 
+        /// <summary>Find the StatusParagraph for given spec.</summary>
+        /// <param name="spec">Package specification to find the status paragraph for</param>
+        /// <returns>Iterator for found spec</returns>
         const_iterator find(const PackageSpec& spec) const { return find(spec.name(), spec.triplet()); }
+
+        /// <summary>Find the StatusParagraph for given feature spec.</summary>
+        /// <param name="spec">Feature specification to find the status paragraph for</param>
+        /// <returns>Iterator for found spec</returns>
+        const_iterator find(const FeatureSpec& spec) const { return find(spec.name(), spec.triplet(), spec.feature()); }
+
+        /// <summary>Find a StatusParagraph by name, triplet and feature.</summary>
+        /// <param name="name">Package name</param>
+        /// <param name="triplet">Triplet</param>
+        /// <param name="feature">Feature name</param>
+        /// <returns>Iterator for found spec</returns>
         iterator find(const std::string& name, const Triplet& triplet, const std::string& feature = "");
         const_iterator find(const std::string& name, const Triplet& triplet, const std::string& feature = "") const;
 
@@ -28,9 +42,26 @@ namespace vcpkg
 
         Optional<InstalledPackageView> find_all_installed(const PackageSpec& spec) const;
 
+        /// <summary>Find the StatusParagraph for given spec if installed</summary>
+        /// <param name="spec">Package specification to find the status for</param>
+        /// <returns>Iterator for found spec</returns>
         const_iterator find_installed(const PackageSpec& spec) const;
+
+        /// <summary>Find the StatusParagraph for given feature spec if installed</summary>
+        /// <param name="spec">Feature specification to find the status for</param>
+        /// <returns>Iterator for found spec</returns>
+        const_iterator find_installed(const FeatureSpec& spec) const;
+
+        /// <summary>Find the StatusParagraph for given spec and return its install status</summary>
+        /// <param name="spec">Package specification to check if installed</param>
+        /// <returns>`true` if installed, `false` if not or not found.</returns>
         bool is_installed(const PackageSpec& spec) const;
 
+        /// <summary>Find the StatusParagraph for given feature spec and return its install status</summary>
+        /// <param name="spec">Feature specification to check if installed</param>
+        /// <returns>`true` if installed, `false` if not or not found.</returns>
+        bool is_installed(const FeatureSpec& spec) const;
+
         iterator insert(std::unique_ptr<StatusParagraph>);
 
         friend void serialize(const StatusParagraphs& pgh, std::string& out_str);

toolsrc/src/tests.statusparagraphs.cpp

@@ -77,6 +77,39 @@ Status: purge ok not-installed
 
             auto it = status_db.find_installed(unsafe_pspec("ffmpeg", Triplet::X64_WINDOWS));
             Assert::IsTrue(it != status_db.end());
+
+            // Feature "openssl" is not installed and should not be found
+            auto it1 = status_db.find_installed({unsafe_pspec("ffmpeg", Triplet::X64_WINDOWS), "openssl"});
+            Assert::IsTrue(it1 == status_db.end());
+        }
+
+        TEST_METHOD(find_for_feature_packages)
+        {
+            auto pghs = parse_paragraphs(R"(
+Package: ffmpeg
+Version: 3.3.3
+Architecture: x64-windows
+Multi-Arch: same
+Description:
+Status: install ok installed
+
+Package: ffmpeg
+Feature: openssl
+Depends: openssl
+Architecture: x64-windows
+Multi-Arch: same
+Description:
+Status: install ok installed
+)");
+            Assert::IsTrue(!!pghs);
+            if (!pghs) return;
+
+            StatusParagraphs status_db(Util::fmap(
+                *pghs.get(), [](RawParagraph& rpgh) { return std::make_unique<StatusParagraph>(std::move(rpgh)); }));
+
+            // Feature "openssl" is installed and should therefore be found
+            auto it = status_db.find_installed({unsafe_pspec("ffmpeg", Triplet::X64_WINDOWS), "openssl"});
+            Assert::IsTrue(it != status_db.end());
         }
     };
 }

toolsrc/src/vcpkg/statusparagraphs.cpp

@@ -83,12 +83,31 @@ namespace vcpkg
         }
     }
 
+    StatusParagraphs::const_iterator StatusParagraphs::find_installed(const FeatureSpec& spec) const
+    {
+        auto it = find(spec);
+        if (it != end() && (*it)->is_installed())
+        {
+            return it;
+        }
+        else
+        {
+            return end();
+        }
+    }
+
     bool vcpkg::StatusParagraphs::is_installed(const PackageSpec& spec) const
     {
         auto it = find(spec);
         return it != end() && (*it)->is_installed();
     }
 
+    bool vcpkg::StatusParagraphs::is_installed(const FeatureSpec& spec) const
+    {
+        auto it = find(spec);
+        return it != end() && (*it)->is_installed();
+    }
+
     StatusParagraphs::iterator StatusParagraphs::insert(std::unique_ptr<StatusParagraph> pgh)
     {
         Checks::check_exit(VCPKG_LINE_INFO, pgh != nullptr, "Inserted null paragraph");