Add a new QUIC platform API for text utilities.

net/quic/core/spdy_utils.cc

 // Copyright (c) 2013 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 "net/quic/core/spdy_utils.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/stl_util.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
+#include "net/quic/platform/api/quic_text_utils.h"
 #include "net/spdy/spdy_flags.h"
 #include "net/spdy/spdy_frame_builder.h"
 #include "net/spdy/spdy_framer.h"
 #include "net/spdy/spdy_protocol.h"
 #include "url/gurl.h"
 
 using base::StringPiece;
 using base::ContainsKey;
 using std::string;
 
@@ skipping 29 matching lines @@
 
 // static
 bool SpdyUtils::ExtractContentLengthFromHeaders(int64_t* content_length,
                                                 SpdyHeaderBlock* headers) {
   auto it = headers->find("content-length");
   if (it == headers->end()) {
     return false;
   } else {
     // Check whether multiple values are consistent.
     StringPiece content_length_header = it->second;
-    std::vector<string> values =
-        base::SplitString(content_length_header, base::StringPiece("\0", 1),
-                          base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
-    for (const string& value : values) {
+    std::vector<StringPiece> values =
+        QuicTextUtils::Split(content_length_header, '\0');
+    for (const StringPiece& value : values) {
       int64_t new_value;
       if (!base::StringToInt64(value, &new_value) || new_value < 0) {
         DLOG(ERROR) << "Content length was either unparseable or negative.";
         return false;
       }
       if (*content_length < 0) {
         *content_length = new_value;
         continue;
       }
       if (new_value != *content_length) {
@@ skipping 25 matching lines @@
   if (it == trailers->end() ||
       !base::StringToSizeT(it->second, final_byte_offset)) {
     DVLOG(1) << "Required key '" << kFinalOffsetHeaderKey << "' not present";
     return false;
   }
   // The final offset header is no longer needed.
   trailers->erase(it->first);
 
   // Trailers must not have empty keys, and must not contain pseudo headers.
   for (const auto& trailer : *trailers) {
-    base::StringPiece key = trailer.first;
-    base::StringPiece value = trailer.second;
-    if (base::StartsWith(key, ":", base::CompareCase::INSENSITIVE_ASCII)) {
+    StringPiece key = trailer.first;
+    StringPiece value = trailer.second;
+    if (QuicTextUtils::StartsWith(key, ":")) {
       DVLOG(1) << "Trailers must not contain pseudo-header: '" << key << "','"
                << value << "'.";
       return false;
     }
 
     // TODO(rjshade): Check for other forbidden keys, following the HTTP/2 spec.
   }
 
   DVLOG(1) << "Successfully parsed Trailers.";
   return true;
 }
 
 bool SpdyUtils::CopyAndValidateHeaders(const QuicHeaderList& header_list,
                                        int64_t* content_length,
                                        SpdyHeaderBlock* headers) {
   for (const auto& p : header_list) {
     const string& name = p.first;
     if (name.empty()) {
       DVLOG(1) << "Header name must not be empty.";
       return false;
     }
 
-    if (std::any_of(name.begin(), name.end(), base::IsAsciiUpper<char>)) {
+    if (QuicTextUtils::ContainsUpperCase(name)) {
       DVLOG(1) << "Malformed header: Header name " << name
                << " contains upper-case characters.";
       return false;
     }
 
     headers->AppendValueOrAddHeader(name, p.second);
   }
 
   if (ContainsKey(*headers, "content-length") &&
       !ExtractContentLengthFromHeaders(content_length, headers)) {
@@ skipping 20 matching lines @@
       found_final_byte_offset = true;
       continue;
     }
 
     if (name.empty() || name[0] == ':') {
       DVLOG(1) << "Trailers must not be empty, and must not contain pseudo-"
                << "headers. Found: '" << name << "'";
       return false;
     }
 
-    if (std::any_of(name.begin(), name.end(), base::IsAsciiUpper<char>)) {
+    if (QuicTextUtils::ContainsUpperCase(name)) {
       DVLOG(1) << "Malformed header: Header name " << name
                << " contains upper-case characters.";
       return false;
     }
 
     if (trailers->find(name) != trailers->end()) {
       DVLOG(1) << "Duplicate header '" << name << "' found in trailers.";
       return false;
     }
 
@@ skipping 61 matching lines @@
     (*headers)[":authority"] = url.substr(start);
     (*headers)[":path"] = "/";
     return true;
   }
   (*headers)[":authority"] = url.substr(start, pos - start);
   (*headers)[":path"] = url.substr(pos);
   return true;
 }
 
 }  // namespace net