intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 31 insertions, 0 deletions

diff --git a/library/cpp/uri/location.cpp b/library/cpp/uri/location.cpp
new file mode 100644
index 0000000000..a6a4d11ffa
--- /dev/null
+++ b/library/cpp/uri/location.cpp
@@ -0,0 +1,31 @@
+#include "location.h"
+#include "uri.h"
+
+namespace NUri {
+    static const int URI_PARSE_FLAGS =
+        (TFeature::FeaturesRecommended | TFeature::FeatureConvertHostIDN | TFeature::FeatureEncodeExtendedDelim | TFeature::FeatureEncodePercent) & ~TFeature::FeatureHashBangToEscapedFragment;
+
+    TString ResolveRedirectLocation(const TStringBuf& baseUrl,
+                                    const TStringBuf& location) {
+        TUri baseUri;
+        TUri locationUri;
+
+        // Parse base URL.
+        if (baseUri.Parse(baseUrl, URI_PARSE_FLAGS) != NUri::TState::ParsedOK) {
+            return "";
+        }
+        // Parse location with respect to the base URL.
+        if (locationUri.Parse(location, baseUri, URI_PARSE_FLAGS) != NUri::TState::ParsedOK) {
+            return "";
+        }
+        // Inherit fragment.
+        if (!locationUri.GetField(NUri::TField::FieldFragment)) {
+            NUri::TUriUpdate update(locationUri);
+            update.Set(NUri::TField::FieldFragment, baseUri.GetField(NUri::TField::FieldFragment));
+        }
+        TString res;
+        locationUri.Print(res, NUri::TField::FlagAllFields);
+        return res;
+    }
+
+}