Index: components/physical_web/eddystone/eddystone_encoder.cc |
diff --git a/components/physical_web/eddystone/eddystone_encoder.cc b/components/physical_web/eddystone/eddystone_encoder.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..73b59f0d58413c43b813a0c5c666d2b0a91ae5e7 |
--- /dev/null |
+++ b/components/physical_web/eddystone/eddystone_encoder.cc |
@@ -0,0 +1,90 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "components/physical_web/eddystone/eddystone_encoder.h" |
+ |
+#include <string> |
+#include <vector> |
+ |
+#include "url/gurl.h" |
+ |
+namespace { |
+const char* kPrefixes[] = {"http://www.", "https://www.", "http://", |
+ "https://"}; |
+const size_t kNumPrefixes = sizeof(kPrefixes) / sizeof(char*); |
+ |
+const char* kSuffixes[] = {".com/", ".org/", ".edu/", ".net/", ".info/", |
+ ".biz/", ".gov/", ".com", ".org", ".edu", |
+ ".net", ".info", ".biz", ".gov"}; |
+const size_t kNumSuffixes = sizeof(kSuffixes) / sizeof(char*); |
+} |
+ |
+namespace physical_web { |
+size_t EncodeUrl(const std::string& url, std::vector<uint8_t>* encoded_url) { |
+ /* |
+ * Sanitize input. |
+ */ |
+ |
+ if (encoded_url == NULL) |
+ return kNullEncodedUrl; |
+ if (url.empty()) |
+ return kEmptyUrl; |
+ |
+ GURL gurl(url); |
+ if (!gurl.is_valid()) |
+ return kInvalidUrl; |
+ if (gurl.HostIsIPAddress() || !gurl.SchemeIsHTTPOrHTTPS()) |
+ return kInvalidFormat; |
+ |
+ /* |
+ * Necessary Declarations. |
+ */ |
+ const char* raw_url_position = url.c_str(); |
+ |
+ size_t prefix_lengths[kNumPrefixes]; |
+ size_t suffix_lengths[kNumSuffixes]; |
+ for (size_t i = 0; i < kNumPrefixes; i++) { |
+ prefix_lengths[i] = strlen(kPrefixes[i]); |
+ } |
+ for (size_t i = 0; i < kNumSuffixes; i++) { |
+ suffix_lengths[i] = strlen(kSuffixes[i]); |
+ } |
+ |
+ /* |
+ * Handle prefix. |
+ */ |
+ for (size_t i = 0; i < kNumPrefixes; i++) { |
+ size_t prefix_len = prefix_lengths[i]; |
+ if (strncmp(raw_url_position, kPrefixes[i], prefix_len) == 0) { |
+ encoded_url->push_back(static_cast<uint8_t>(i)); |
+ raw_url_position += prefix_len; |
+ break; |
+ } |
+ } |
+ |
+ /* |
+ * Handle suffixes. |
+ */ |
+ while (*raw_url_position) { |
+ /* check for suffix match */ |
+ size_t i; |
+ for (i = 0; i < kNumSuffixes; i++) { |
+ size_t suffix_len = suffix_lengths[i]; |
+ if (strncmp(raw_url_position, kSuffixes[i], suffix_len) == 0) { |
+ encoded_url->push_back(static_cast<uint8_t>(i)); |
+ raw_url_position += suffix_len; |
+ break; /* from the for loop for checking against suffixes */ |
+ } |
+ } |
+ /* This is the default case where we've got an ordinary character which |
+ * doesn't match a suffix. */ |
+ if (i == kNumSuffixes) { |
+ encoded_url->push_back(*raw_url_position); |
+ raw_url_position++; |
+ } |
+ } |
+ |
+ return encoded_url->size(); |
+} |
+} |