chromium/src/third_party/blink/renderer/platform/blob/blob_url.cc

/*
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#include "third_party/blink/renderer/platform/blob/blob_url.h"

#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/uuid.h"

namespace blink {

const char BlobURL::kBlobProtocol[] = "blob";

KURL BlobURL::CreatePublicURL(const SecurityOrigin* security_origin) {
  DCHECK(security_origin);
  return CreateBlobURL(security_origin->ToString());
}

String BlobURL::GetOrigin(const KURL& url) {
  DCHECK(url.ProtocolIs(kBlobProtocol));

  unsigned start_index = url.PathStart();
  unsigned end_index = url.PathAfterLastSlash();
  return url.GetString().Substring(start_index, end_index - start_index - 1);
}

KURL BlobURL::CreateBlobURL(const String& origin_string) {
  DCHECK(!origin_string.IsEmpty());
  String url_string =
      "blob:" + origin_string + '/' + WTF::CreateCanonicalUUIDString();
  return KURL::CreateIsolated(url_string);
}

}  // namespace blink