vcpkg add port: Handle feature core.

azure-pipelines/end-to-end-tests-dir/add.ps1

@@ -9,18 +9,68 @@ New-Item -Path $manifestDir -ItemType Directory
 New-Item -Path $manifestPath -ItemType File `
     -Value (ConvertTo-Json -Depth 5 -InputObject $vcpkgJson)
 
-Run-Vcpkg add port zlib @manifestDirArgs
+Run-Vcpkg add port "sqlite3[core]" "sqlite3[core]" @manifestDirArgs
 Throw-IfFailed
 
 $expected = @"
 {
   "dependencies": [
-    "zlib"
+    {
+      "name": "sqlite3",
+      "default-features": false
+    }
   ]
 }
 "@
 
 $actual = (Get-Content -Path $manifestPath -Raw).TrimEnd()
 if ($expected -ne $actual) {
-    throw "Add port didn't add zlib dependency correctly.`nExpected: $expected`nActual:$actual"
+    throw "Add port didn't add sqlite3[core] dependency correctly.`nExpected: $expected`nActual:$actual"
 }
+
+# Add default features
+Run-Vcpkg add port "sqlite3" "sqlite3[core]" @manifestDirArgs
+Throw-IfFailed
+
+$expected = @"
+{
+  "dependencies": [
+    "sqlite3"
+  ]
+}
+"@
+
+$actual = (Get-Content -Path $manifestPath -Raw).TrimEnd()
+if ($expected -ne $actual) {
+    throw "Add port didn't add sqlite3 dependency correctly.`nExpected: $expected`nActual:$actual"
+}
+
+# Adding sqlite3[core] does not change something because default features are already enabled
+Run-Vcpkg add port "sqlite3[core]" @manifestDirArgs
+Throw-IfFailed
+$actual = (Get-Content -Path $manifestPath -Raw).TrimEnd()
+if ($expected -ne $actual) {
+    throw "Add port didn't add sqlite3[core] dependency correctly.`nExpected: $expected`nActual:$actual"
+}
+
+# Add zlib as a feature in comparison to the previous test
+Run-Vcpkg add port "sqlite3[core,zlib]" @manifestDirArgs
+Throw-IfFailed
+$expected = @"
+{
+  "dependencies": [
+    {
+      "name": "sqlite3",
+      "features": [
+        "zlib"
+      ]
+    }
+  ]
+}
+"@
+$actual = (Get-Content -Path $manifestPath -Raw).TrimEnd()
+if ($expected -ne $actual) {
+    throw "Add port didn't add sqlite3[zlib] dependency correctly.`nExpected: $expected`nActual:$actual"
+}
+
+

src/vcpkg/commands.add.cpp

@@ -110,16 +110,30 @@ namespace vcpkg
                     return dep.name == spec.name && !dep.host &&
                            structurally_equal(spec.platform.value_or(PlatformExpression::Expr()), dep.platform);
                 });
-                const auto features = Util::fmap(spec.features.value_or({}), [](const std::string& feature) {
+                auto feature_names = spec.features.value_or({});
+                bool is_core = false;
+                Util::erase_if(feature_names, [&](const auto& feature_name) {
+                    if (feature_name == "core")
+                    {
+                        is_core = true;
+                        return true;
+                    }
+                    return false;
+                });
+                const auto features = Util::fmap(feature_names, [](const std::string& feature) {
                     Checks::check_exit(VCPKG_LINE_INFO, !feature.empty() && feature != "core" && feature != "default");
                     return DependencyRequestedFeature{feature};
                 });
                 if (dep == manifest_scf.core_paragraph->dependencies.end())
                 {
-                    manifest_scf.core_paragraph->dependencies.push_back(
+                    auto& new_dep = manifest_scf.core_paragraph->dependencies.emplace_back(
                         Dependency{spec.name, features, spec.platform.value_or({})});
+                    if (is_core)
+                    {
+                        new_dep.default_features = false;
+                    }
                 }
-                else if (spec.features)
+                else
                 {
                     for (const auto& feature : features)
                     {
@@ -128,6 +142,10 @@ namespace vcpkg
                             dep->features.push_back(feature);
                         }
                     }
+                    if (!is_core)
+                    {
+                        dep->default_features = true;
+                    }
                 }
             }