Create net::FormatOriginForDisplay helper function.

net::FormatOriginForDisplay provides a canonical, concise, human-friendly
display for origins. It supports callers in any higher-layer module.

Based heavily on earlier work by dewittj and felt. Thanks!

BUG=402698
TBR=thakis,brettw

Review URL: https://codereview.chromium.org/1133943002

Cr-Commit-Position: refs/heads/master@{#330254}

1 files changed, 43 insertions, 1 deletions

diff --git a/net/base/net_util_icu.cc b/net/base/net_util_icu.cc
index 94e1a0d..bdbe270 100644
--- a/net/base/net_util_icu.cc
+++ b/net/base/net_util_icu.cc
@@ -797,7 +797,7 @@ base::string16 FormatUrlWithAdjustments(
     // after stripping the prefix.  The only thing necessary is to add an
     // adjustment to reflect the stripped prefix.
     adjustments->insert(adjustments->begin(),
-        base::OffsetAdjuster::Adjustment(0, kHTTPSize, 0));
+                        base::OffsetAdjuster::Adjustment(0, kHTTPSize, 0));
 
     if (prefix_end)
       *prefix_end -= kHTTPSize;
@@ -829,4 +829,46 @@ base::string16 FormatUrl(const GURL& url,
   return result;
 }
 
+base::string16 FormatOriginForDisplay(const GURL& url,
+                                      const std::string& languages,
+                                      bool omit_scheme) {
+  if (!url.IsStandard())
+    return FormatUrl(url, languages);
+
+  if (url.SchemeIsFile()) {
+    // TODO(palmer): Determine whether to encode this policy in GURL::GetOrigin.
+    return (omit_scheme ? base::ASCIIToUTF16("")
+                        : base::ASCIIToUTF16("file://")) +
+           base::UTF8ToUTF16(url.path());
+  }
+
+  if (url.SchemeIsFileSystem()) {
+    // TODO(palmer): Determine whether to encode this policy in GURL::GetOrigin.
+    const GURL inner_url(url.spec().substr(strlen("filesystem:")));
+    return base::ASCIIToUTF16("filesystem:") +
+           FormatOriginForDisplay(inner_url, languages, omit_scheme);
+  }
+
+  const GURL origin = url.GetOrigin();
+  const std::string& scheme = origin.scheme();
+  const std::string& host = origin.host();
+  if (scheme.empty() || host.empty())
+    return FormatUrl(url, languages);
+
+  base::string16 result;
+
+  if (!omit_scheme)
+    result = base::UTF8ToUTF16(scheme) + base::ASCIIToUTF16("://");
+
+  result += base::UTF8ToUTF16(host);
+
+  const int port = origin.IntPort();
+  const int default_port = url::DefaultPortForScheme(origin.scheme().c_str(),
+                                                     origin.scheme().length());
+  if (origin.port().length() > 0 && port != 0 && port != default_port)
+    result += base::ASCIIToUTF16(":") + base::UTF8ToUTF16(origin.port());
+
+  return result;
+}
+
 }  // namespace net