[Android] Split the address parser from AddressDetector for WebView use.

content/renderer/android/address_detector.cc

 // Copyright (c) 2012 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 "content/renderer/android/address_detector.h"
 
 #include <bitset>
 
-#include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "content/common/android/address_parser.h"
 #include "net/base/escape.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 
 namespace {
 
 // Prefix used for geographical address intent URIs.
 static const char kAddressSchemaPrefix[] = "geo:0,0?q=";
 
 // Maximum text length to be searched for address detection.
 static const size_t kMaxAddressLength = 250;
 
-// Minimum number of words in an address after the house number
-// before a state is expected to be found.
-// A value too high can miss short addresses.
-const size_t kMinAddressWords = 3;
-
-// Maximum number of words allowed in an address between the house number
-// and the state, both not included.
-const size_t kMaxAddressWords = 12;
-
-// Maximum number of lines allowed in an address between the house number
-// and the state, both not included.
-const size_t kMaxAddressLines = 5;
-
-// Maximum length allowed for any address word between the house number
-// and the state, both not included.
-const size_t kMaxAddressNameWordLength = 25;
-
-// Maximum number of words after the house number in which the location name
-// should be found.
-const size_t kMaxLocationNameDistance = 4;
-
-// Number of digits for a valid zip code.
-const size_t kZipDigits = 5;
-
-// Number of digits for a valid zip code in the Zip Plus 4 format.
-const size_t kZipPlus4Digits = 9;
-
-// Maximum number of digits of a house number, including possible hyphens.
-const size_t kMaxHouseDigits = 5;
-
-// Additional characters used as new line delimiters.
-const char16 kNewlineDelimiters[] = {
-  '\n',
-  ',',
-  '*',
-  0x2022,  // Unicode bullet
-  0,
-};
-
-char16 SafePreviousChar(const string16::const_iterator& it,
-    const string16::const_iterator& begin) {
-  if (it == begin)
-    return ' ';
-  return *(it - 1);
-}
-
-char16 SafeNextChar(const string16::const_iterator& it,
-    const string16::const_iterator& end) {
-  if (it == end)
-    return ' ';
-  return *(it + 1);
-}
-
-bool WordLowerCaseEqualsASCII(string16::const_iterator word_begin,
-    string16::const_iterator word_end, const char* ascii_to_match) {
-  for (string16::const_iterator it = word_begin; it != word_end;
-      ++it, ++ascii_to_match) {
-    if (!*ascii_to_match || base::ToLowerASCII(*it) != *ascii_to_match)
-      return false;
-  }
-  return *ascii_to_match == 0 || *ascii_to_match == ' ';
-}
-
-bool LowerCaseEqualsASCIIWithPlural(string16::const_iterator word_begin,
-    string16::const_iterator word_end, const char* ascii_to_match,
-    bool allow_plural) {
-  for (string16::const_iterator it = word_begin; it != word_end;
-      ++it, ++ascii_to_match) {
-    if (!*ascii_to_match && allow_plural && *it == 's' && it + 1 == word_end)
-      return true;
-
-    if (!*ascii_to_match || base::ToLowerASCII(*it) != *ascii_to_match)
-      return false;
-  }
-  return *ascii_to_match == 0;
-}
-
 }  // anonymous namespace
 
 namespace content {
 
 AddressDetector::AddressDetector() {
 }
 
 AddressDetector::~AddressDetector() {
 }
 
-std::string AddressDetector::GetContentText(const string16& text) {
-  // Get the address and replace unicode bullets with commas.
-  string16 address_16 = CollapseWhitespace(text, false);
-  std::replace(address_16.begin(), address_16.end(),
-      static_cast<char16>(0x2022), static_cast<char16>(','));
-  return UTF16ToUTF8(address_16);
-}
-
 GURL AddressDetector::GetIntentURL(const std::string& content_text) {
   return GURL(kAddressSchemaPrefix +
       net::EscapeQueryParamValue(content_text, true));
 }
 
 size_t AddressDetector::GetMaximumContentLength() {
   return kMaxAddressLength;
 }
 
-bool AddressDetector::FindContent(const string16::const_iterator& begin,
-                                  const string16::const_iterator& end,
-                                  size_t* start_pos,
-                                  size_t* end_pos,
-                                  std::string* content_text) {
-  HouseNumberParser house_number_parser;
-
-  // Keep going through the input string until a potential house number is
-  // detected. Start tokenizing the following words to find a valid
-  // street name within a word range. Then, find a state name followed
-  // by a valid zip code for that state. Also keep a look for any other
-  // possible house numbers to continue from in case of no match and for
-  // state names not followed by a zip code (e.g. New York, NY 10000).
-  const string16 newline_delimiters = kNewlineDelimiters;
-  const string16 delimiters = kWhitespaceUTF16 + newline_delimiters;
-  for (string16::const_iterator it = begin; it != end; ) {
-    Word house_number;
-    if (!house_number_parser.Parse(it, end, &house_number))
-      return false;
-
-    String16Tokenizer tokenizer(house_number.end, end, delimiters);
-    tokenizer.set_options(String16Tokenizer::RETURN_DELIMS);
-
-    std::vector<Word> words;
-    words.push_back(house_number);
-
-    bool found_location_name = false;
-    bool continue_on_house_number = true;
-    bool consecutive_house_numbers = true;
-    size_t next_house_number_word = 0;
-    size_t num_lines = 1;
-
-    // Don't include the house number in the word count.
-    size_t next_word = 1;
-    for (; next_word <= kMaxAddressWords + 1; ++next_word) {
-
-      // Extract a new word from the tokenizer.
-      if (next_word == words.size()) {
-        do {
-          if (!tokenizer.GetNext())
-            return false;
-
-          // Check the number of address lines.
-          if (tokenizer.token_is_delim() && newline_delimiters.find(
-              *tokenizer.token_begin()) != string16::npos) {
-            ++num_lines;
-          }
-        } while (tokenizer.token_is_delim());
-
-        if (num_lines > kMaxAddressLines)
-          break;
-
-        words.push_back(Word(tokenizer.token_begin(), tokenizer.token_end()));
-      }
-
-      // Check the word length. If too long, don't try to continue from
-      // the next house number as no address can hold this word.
-      const Word& current_word = words[next_word];
-      DCHECK_GT(std::distance(current_word.begin, current_word.end), 0);
-      size_t current_word_length = std::distance(
-          current_word.begin, current_word.end);
-      if (current_word_length > kMaxAddressNameWordLength) {
-        continue_on_house_number = false;
-        break;
-      }
-
-      // Check if the new word is a valid house number.
-      if (house_number_parser.Parse(current_word.begin, current_word.end,
-          NULL)) {
-        // Increase the number of consecutive house numbers since the beginning.
-        if (consecutive_house_numbers) {
-          // Check if there is a new line between consecutive house numbers.
-          // This avoids false positives of the form "Cafe 21\n 750 Fifth Ave.."
-          if (num_lines > 1) {
-            next_house_number_word = next_word;
-            break;
-          }
-        }
-
-        // Keep the next candidate to resume parsing from in case of failure.
-        if (next_house_number_word == 0) {
-          next_house_number_word = next_word;
-          continue;
-        }
-      } else {
-        consecutive_house_numbers = false;
-      }
-
-      // Look for location names in the words after the house number.
-      // A range limitation is introduced to avoid matching
-      // anything that starts with a number before a legitimate address.
-      if (next_word <= kMaxLocationNameDistance &&
-          IsValidLocationName(current_word)) {
-        found_location_name = true;
-        continue;
-      }
-
-      // Don't count the house number.
-      if (next_word > kMinAddressWords) {
-        // Looking for the state is likely to add new words to the list while
-        // checking for multi-word state names.
-        size_t state_first_word = next_word;
-        size_t state_last_word, state_index;
-        if (FindStateStartingInWord(&words, state_first_word, &state_last_word,
-                                    &tokenizer, &state_index)) {
-
-          // A location name should have been found at this point.
-          if (!found_location_name)
-            break;
-
-          // Explicitly exclude "et al", as "al" is a valid state code.
-          if (current_word_length == 2 && words.size() > 2) {
-            const Word& previous_word = words[state_first_word - 1];
-            if (previous_word.end - previous_word.begin == 2 &&
-                LowerCaseEqualsASCII(previous_word.begin, previous_word.end,
-                                     "et") &&
-                LowerCaseEqualsASCII(current_word.begin, current_word.end,
-                                     "al"))
-              break;
-          }
-
-          // Extract one more word from the tokenizer if not already available.
-          size_t zip_word = state_last_word + 1;
-          if (zip_word == words.size()) {
-            do {
-              if (!tokenizer.GetNext())
-                return false;
-            } while (tokenizer.token_is_delim());
-            words.push_back(Word(tokenizer.token_begin(),
-                            tokenizer.token_end()));
-          }
-
-          // Check the parsing validity and state range of the zip code.
-          next_word = state_last_word;
-          if (!IsZipValid(words[zip_word], state_index))
-            continue;
-
-          *start_pos = words[0].begin - begin;
-          *end_pos = words[zip_word].end - begin;
-          content_text->assign(GetContentText(string16(words[0].begin,
-                                                       words[zip_word].end)));
-          return true;
-        }
-      }
-    }
-
-    // Avoid skipping too many words because of a non-address number
-    // at the beginning of the contents to parse.
-    if (continue_on_house_number && next_house_number_word > 0) {
-      it = words[next_house_number_word].begin;
-    } else {
-      DCHECK(!words.empty());
-      next_word = std::min(next_word, words.size() - 1);
-      it = words[next_word].end;
-    }
-  }
-
-  return false;
+std::string AddressDetector::GetContentText(const string16& text) {
+  // Get the address and replace unicode bullets with commas.
+  string16 address_16 = CollapseWhitespace(text, false);
+  std::replace(address_16.begin(), address_16.end(),
+      static_cast<char16>(0x2022), static_cast<char16>(','));
+  return UTF16ToUTF8(address_16);
 }
 
-AddressDetector::Word::Word(const string16::const_iterator& begin,
-                            const string16::const_iterator& end)
-    : begin(begin),
-      end(end) {
-  DCHECK(begin <= end);
-}
-
-bool AddressDetector::HouseNumberParser::IsPreDelimiter(
-    char16 character) {
-  return character == ':' || IsPostDelimiter(character);
-}
-
-bool AddressDetector::HouseNumberParser::IsPostDelimiter(
-    char16 character) {
-  return IsWhitespace(character) || strchr(",\"'", character);
-}
-
-void AddressDetector::HouseNumberParser::RestartOnNextDelimiter() {
-  ResetState();
-  for (; it_ != end_ && !IsPreDelimiter(*it_); ++it_) {}
-}
-
-void AddressDetector::HouseNumberParser::AcceptChars(size_t num_chars) {
-  size_t offset = std::min(static_cast<size_t>(std::distance(it_, end_)),
-                           num_chars);
-  it_ += offset;
-  result_chars_ += offset;
-}
-
-void AddressDetector::HouseNumberParser::SkipChars(size_t num_chars) {
-  it_ += std::min(static_cast<size_t>(std::distance(it_, end_)), num_chars);
-}
-
-void AddressDetector::HouseNumberParser::ResetState() {
-  num_digits_ = 0;
-  result_chars_ = 0;
-}
-
-bool AddressDetector::HouseNumberParser::CheckFinished(Word* word) const {
-  // There should always be a number after a hyphen.
-  if (result_chars_ == 0 || SafePreviousChar(it_, begin_) == '-')
-    return false;
-
-  if (word) {
-    word->begin = it_ - result_chars_;
-    word->end = it_;
-  }
-  return true;
-}
-
-bool AddressDetector::HouseNumberParser::Parse(
-    const string16::const_iterator& begin,
-    const string16::const_iterator& end, Word* word) {
-  it_ = begin_ = begin;
-  end_ = end;
-  ResetState();
-
-  // Iterations only used as a fail-safe against any buggy infinite loops.
-  size_t iterations = 0;
-  size_t max_iterations = end - begin + 1;
-  for (; it_ != end_ && iterations < max_iterations; ++iterations) {
-
-    // Word finished case.
-    if (IsPostDelimiter(*it_)) {
-      if (CheckFinished(word))
-        return true;
-      else if (result_chars_)
-        ResetState();
-
-      SkipChars(1);
-      continue;
-    }
-
-    // More digits. There should be no more after a letter was found.
-    if (IsAsciiDigit(*it_)) {
-      if (num_digits_ >= kMaxHouseDigits) {
-        RestartOnNextDelimiter();
-      } else {
-        AcceptChars(1);
-        ++num_digits_;
-      }
-      continue;
-    }
-
-    if (IsAsciiAlpha(*it_)) {
-      // Handle special case 'one'.
-      if (result_chars_ == 0) {
-        if (it_ + 3 <= end_ && LowerCaseEqualsASCII(it_, it_ + 3, "one"))
-          AcceptChars(3);
-        else
-          RestartOnNextDelimiter();
-        continue;
-      }
-
-      // There should be more than 1 character because of result_chars.
-      DCHECK_GT(result_chars_, 0U);
-      DCHECK(it_ != begin_);
-      char16 previous = SafePreviousChar(it_, begin_);
-      if (IsAsciiDigit(previous)) {
-        // Check cases like '12A'.
-        char16 next = SafeNextChar(it_, end_);
-        if (IsPostDelimiter(next)) {
-          AcceptChars(1);
-          continue;
-        }
-
-        // Handle cases like 12a, 1st, 2nd, 3rd, 7th.
-        if (IsAsciiAlpha(next)) {
-          char16 last_digit = previous;
-          char16 first_letter = base::ToLowerASCII(*it_);
-          char16 second_letter = base::ToLowerASCII(next);
-          bool is_teen = SafePreviousChar(it_ - 1, begin_) == '1' &&
-              num_digits_ == 2;
-
-          switch (last_digit - '0') {
-          case 1:
-            if ((first_letter == 's' && second_letter == 't') ||
-                (first_letter == 't' && second_letter == 'h' && is_teen)) {
-              AcceptChars(2);
-              continue;
-            }
-            break;
-
-          case 2:
-            if ((first_letter == 'n' && second_letter == 'd') ||
-                (first_letter == 't' && second_letter == 'h' && is_teen)) {
-              AcceptChars(2);
-              continue;
-            }
-            break;
-
-          case 3:
-            if ((first_letter == 'r' && second_letter == 'd') ||
-                (first_letter == 't' && second_letter == 'h' && is_teen)) {
-              AcceptChars(2);
-              continue;
-            }
-            break;
-
-          case 0:
-            // Explicitly exclude '0th'.
-            if (num_digits_ == 1)
-              break;
-
-          case 4:
-          case 5:
-          case 6:
-          case 7:
-          case 8:
-          case 9:
-            if (first_letter == 't' && second_letter == 'h') {
-              AcceptChars(2);
-              continue;
-            }
-            break;
-
-          default:
-            NOTREACHED();
-          }
-        }
-      }
-
-      RestartOnNextDelimiter();
-      continue;
-    }
-
-    if (*it_ == '-' && num_digits_ > 0) {
-      AcceptChars(1);
-      ++num_digits_;
-      continue;
-    }
-
-    RestartOnNextDelimiter();
-    SkipChars(1);
-  }
-
-  if (iterations >= max_iterations)
-    return false;
-
-  return CheckFinished(word);
-}
-
-bool AddressDetector::FindStateStartingInWord(
-    WordList* words,
-    size_t state_first_word,
-    size_t* state_last_word,
-    String16Tokenizer* tokenizer,
-    size_t* state_index) {
-
-  // Bitmasks containing the allowed suffixes for 2-letter state codes.
-  static const int state_two_letter_suffix[23] = {
-    0x02060c00,  // A followed by: [KLRSZ].
-    0x00000000,  // B.
-    0x00084001,  // C followed by: [AOT].
-    0x00000014,  // D followed by: [CE].
-    0x00000000,  // E.
-    0x00001800,  // F followed by: [LM].
-    0x00100001,  // G followed by: [AU].
-    0x00000100,  // H followed by: [I].
-    0x00002809,  // I followed by: [ADLN].
-    0x00000000,  // J.
-    0x01040000,  // K followed by: [SY].
-    0x00000001,  // L followed by: [A].
-    0x000ce199,  // M followed by: [ADEHINOPST].
-    0x0120129c,  // N followed by: [CDEHJMVY].
-    0x00020480,  // O followed by: [HKR].
-    0x00420001,  // P followed by: [ARW].
-    0x00000000,  // Q.
-    0x00000100,  // R followed by: [I].
-    0x0000000c,  // S followed by: [CD].
-    0x00802000,  // T followed by: [NX].
-    0x00080000,  // U followed by: [T].
-    0x00080101,  // V followed by: [AIT].
-    0x01200101   // W followed by: [AIVY].
-  };
-
-  // Accumulative number of states for the 2-letter code indexed by the first.
-  static const int state_two_letter_accumulative[24] = {
-     0,  5,  5,  8, 10, 10, 12, 14,
-    15, 19, 19, 21, 22, 32, 40, 43,
-    46, 46, 47, 49, 51, 52, 55, 59
-  };
-
-  // State names sorted alphabetically with their lengths.
-  // There can be more than one possible name for a same state if desired.
-  static const struct StateNameInfo {
-    const char* string;
-    char first_word_length;
-    char length;
-    char state_index; // Relative to two-character code alphabetical order.
-  } state_names[59] = {
-    { "alabama", 7, 7, 1 }, { "alaska", 6, 6, 0 },
-    { "american samoa", 8, 14, 3 }, { "arizona", 7, 7, 4 },
-    { "arkansas", 8, 8, 2 },
-    { "california", 10, 10, 5 }, { "colorado", 8, 8, 6 },
-    { "connecticut", 11, 11, 7 }, { "delaware", 8, 8, 9 },
-    { "district of columbia", 8, 20, 8 },
-    { "federated states of micronesia", 9, 30, 11 }, { "florida", 7, 7, 10 },
-    { "guam", 4, 4, 13 }, { "georgia", 7, 7, 12 },
-    { "hawaii", 6, 6, 14 },
-    { "idaho", 5, 5, 16 }, { "illinois", 8, 8, 17 }, { "indiana", 7, 7, 18 },
-    { "iowa", 4, 4, 15 },
-    { "kansas", 6, 6, 19 }, { "kentucky", 8, 8, 20 },
-    { "louisiana", 9, 9, 21 },
-    { "maine", 5, 5, 24 }, { "marshall islands", 8, 16, 25 },
-    { "maryland", 8, 8, 23 }, { "massachusetts", 13, 13, 22 },
-    { "michigan", 8, 8, 26 }, { "minnesota", 9, 9, 27 },
-    { "mississippi", 11, 11, 30 }, { "missouri", 8, 8, 28 },
-    { "montana", 7, 7, 31 },
-    { "nebraska", 8, 8, 34 }, { "nevada", 6, 6, 38 },
-    { "new hampshire", 3, 13, 35 }, { "new jersey", 3, 10, 36 },
-    { "new mexico", 3, 10, 37 }, { "new york", 3, 8, 39 },
-    { "north carolina", 5, 14, 32 }, { "north dakota", 5, 12, 33 },
-    { "northern mariana islands", 8, 24, 29 },
-    { "ohio", 4, 4, 40 }, { "oklahoma", 8, 8, 41 }, { "oregon", 6, 6, 42 },
-    { "palau", 5, 5, 45 }, { "pennsylvania", 12, 12, 43 },
-    { "puerto rico", 6, 11, 44 },
-    { "rhode island", 5, 5, 46 },
-    { "south carolina", 5, 14, 47 }, { "south dakota", 5, 12, 48 },
-    { "tennessee", 9, 9, 49 }, { "texas", 5, 5, 50 },
-    { "utah", 4, 4, 51 },
-    { "vermont", 7, 7, 54 }, { "virgin islands", 6, 14, 53 },
-    { "virginia", 8, 8, 52 },
-    { "washington", 10, 10, 55 }, { "west virginia", 4, 13, 57 },
-    { "wisconsin", 9, 9, 56 }, { "wyoming", 7, 7, 58 }
-  };
-
-  // Accumulative number of states for sorted names indexed by the first letter.
-  // Required a different one since there are codes that don't share their
-  // first letter with the name of their state (MP = Northern Mariana Islands).
-  static const int state_names_accumulative[24] = {
-     0,  5,  5,  8, 10, 10, 12, 14,
-    15, 19, 19, 21, 22, 31, 40, 43,
-    46, 46, 47, 49, 51, 52, 55, 59
-  };
-
-  DCHECK_EQ(state_names_accumulative[arraysize(state_names_accumulative) - 1],
-      static_cast<int>(ARRAYSIZE_UNSAFE(state_names)));
-
-  const Word& first_word = words->at(state_first_word);
-  int length = first_word.end - first_word.begin;
-  if (length < 2 || !IsAsciiAlpha(*first_word.begin))
-    return false;
-
-  // No state names start with x, y, z.
-  char16 first_letter = base::ToLowerASCII(*first_word.begin);
-  if (first_letter > 'w')
-    return false;
-
-  DCHECK(first_letter >= 'a');
-  int first_index = first_letter - 'a';
-
-  // Look for two-letter state names.
-  if (length == 2 && IsAsciiAlpha(*(first_word.begin + 1))) {
-    char16 second_letter = base::ToLowerASCII(*(first_word.begin + 1));
-    DCHECK(second_letter >= 'a');
-
-    int second_index = second_letter - 'a';
-    if (!(state_two_letter_suffix[first_index] & (1 << second_index)))
-      return false;
-
-    std::bitset<32> previous_suffixes = state_two_letter_suffix[first_index] &
-        ((1 << second_index) - 1);
-    *state_last_word = state_first_word;
-    *state_index = state_two_letter_accumulative[first_index] +
-        previous_suffixes.count();
-    return true;
-  }
-
-  // Look for full state names by their first letter. Discard by length.
-  for (int state = state_names_accumulative[first_index];
-      state < state_names_accumulative[first_index + 1]; ++state) {
-    if (state_names[state].first_word_length != length)
-      continue;
-
-    bool state_match = false;
-    size_t state_word = state_first_word;
-    for (int pos = 0; true; ) {
-      if (!WordLowerCaseEqualsASCII(words->at(state_word).begin,
-          words->at(state_word).end, &state_names[state].string[pos]))
-        break;
-
-      pos += words->at(state_word).end - words->at(state_word).begin + 1;
-      if (pos >= state_names[state].length) {
-        state_match = true;
-        break;
-      }
-
-      // Ran out of words, extract more from the tokenizer.
-      if (++state_word == words->size()) {
-        do {
-          if (!tokenizer->GetNext())
-            break;
-        } while (tokenizer->token_is_delim());
-        words->push_back(
-            Word(tokenizer->token_begin(), tokenizer->token_end()));
-      }
-    }
-
-    if (state_match) {
-      *state_last_word = state_word;
-      *state_index = state_names[state].state_index;
-      return true;
-    }
-  }
-
-  return false;
-}
-
-bool AddressDetector::IsZipValid(const Word& word, size_t state_index) {
-  size_t length = word.end - word.begin;
-  if (length != kZipDigits && length != kZipPlus4Digits + 1)
-    return false;
-
-  for (string16::const_iterator it = word.begin; it != word.end; ++it) {
-    size_t pos = it - word.begin;
-    if (IsAsciiDigit(*it) || (*it == '-' && pos == kZipDigits))
-      continue;
-    return false;
-  }
-  return IsZipValidForState(word, state_index);
-}
-
-bool AddressDetector::IsZipValidForState(const Word& word, size_t state_index) {
-  // List of valid zip code ranges.
-  static const struct {
-    char low;
-    char high;
-    char exception1;
-    char exception2;
-  } zip_range[] = {
-    { 99, 99, -1, -1 }, // AK Alaska.
-    { 35, 36, -1, -1 }, // AL Alabama.
-    { 71, 72, -1, -1 }, // AR Arkansas.
-    { 96, 96, -1, -1 }, // AS American Samoa.
-    { 85, 86, -1, -1 }, // AZ Arizona.
-    { 90, 96, -1, -1 }, // CA California.
-    { 80, 81, -1, -1 }, // CO Colorado.
-    {  6,  6, -1, -1 }, // CT Connecticut.
-    { 20, 20, -1, -1 }, // DC District of Columbia.
-    { 19, 19, -1, -1 }, // DE Delaware.
-    { 32, 34, -1, -1 }, // FL Florida.
-    { 96, 96, -1, -1 }, // FM Federated States of Micronesia.
-    { 30, 31, -1, -1 }, // GA Georgia.
-    { 96, 96, -1, -1 }, // GU Guam.
-    { 96, 96, -1, -1 }, // HI Hawaii.
-    { 50, 52, -1, -1 }, // IA Iowa.
-    { 83, 83, -1, -1 }, // ID Idaho.
-    { 60, 62, -1, -1 }, // IL Illinois.
-    { 46, 47, -1, -1 }, // IN Indiana.
-    { 66, 67, 73, -1 }, // KS Kansas.
-    { 40, 42, -1, -1 }, // KY Kentucky.
-    { 70, 71, -1, -1 }, // LA Louisiana.
-    {  1,  2, -1, -1 }, // MA Massachusetts.
-    { 20, 21, -1, -1 }, // MD Maryland.
-    {  3,  4, -1, -1 }, // ME Maine.
-    { 96, 96, -1, -1 }, // MH Marshall Islands.
-    { 48, 49, -1, -1 }, // MI Michigan.
-    { 55, 56, -1, -1 }, // MN Minnesota.
-    { 63, 65, -1, -1 }, // MO Missouri.
-    { 96, 96, -1, -1 }, // MP Northern Mariana Islands.
-    { 38, 39, -1, -1 }, // MS Mississippi.
-    { 55, 56, -1, -1 }, // MT Montana.
-    { 27, 28, -1, -1 }, // NC North Carolina.
-    { 58, 58, -1, -1 }, // ND North Dakota.
-    { 68, 69, -1, -1 }, // NE Nebraska.
-    {  3,  4, -1, -1 }, // NH New Hampshire.
-    {  7,  8, -1, -1 }, // NJ New Jersey.
-    { 87, 88, 86, -1 }, // NM New Mexico.
-    { 88, 89, 96, -1 }, // NV Nevada.
-    { 10, 14,  0,  6 }, // NY New York.
-    { 43, 45, -1, -1 }, // OH Ohio.
-    { 73, 74, -1, -1 }, // OK Oklahoma.
-    { 97, 97, -1, -1 }, // OR Oregon.
-    { 15, 19, -1, -1 }, // PA Pennsylvania.
-    {  6,  6,  0,  9 }, // PR Puerto Rico.
-    { 96, 96, -1, -1 }, // PW Palau.
-    {  2,  2, -1, -1 }, // RI Rhode Island.
-    { 29, 29, -1, -1 }, // SC South Carolina.
-    { 57, 57, -1, -1 }, // SD South Dakota.
-    { 37, 38, -1, -1 }, // TN Tennessee.
-    { 75, 79, 87, 88 }, // TX Texas.
-    { 84, 84, -1, -1 }, // UT Utah.
-    { 22, 24, 20, -1 }, // VA Virginia.
-    {  6,  9, -1, -1 }, // VI Virgin Islands.
-    {  5,  5, -1, -1 }, // VT Vermont.
-    { 98, 99, -1, -1 }, // WA Washington.
-    { 53, 54, -1, -1 }, // WI Wisconsin.
-    { 24, 26, -1, -1 }, // WV West Virginia.
-    { 82, 83, -1, -1 }  // WY Wyoming.
-  };
-
-  // Zip numeric value for the first two characters.
-  DCHECK(word.begin != word.end);
-  DCHECK(IsAsciiDigit(*word.begin));
-  DCHECK(IsAsciiDigit(*(word.begin + 1)));
-  int zip_prefix = (*word.begin - '0') * 10 + (*(word.begin + 1) - '0');
-
-  if ((zip_prefix >= zip_range[state_index].low &&
-       zip_prefix <= zip_range[state_index].high) ||
-      zip_prefix == zip_range[state_index].exception1 ||
-      zip_prefix == zip_range[state_index].exception2) {
+bool AddressDetector::FindContent(const string16::const_iterator& begin,
+    const string16::const_iterator& end, size_t* start_pos, size_t* end_pos,
+    std::string* content_text) {
+  if (address_parser::FindAddress(begin, end, start_pos, end_pos)) {
+    content_text->assign(
+        GetContentText(string16(begin + *start_pos, begin + *end_pos)));
     return true;
   }
   return false;
 }
 
-bool AddressDetector::IsValidLocationName(const Word& word) {
-  // Supported location names sorted alphabetically and grouped by first letter.
-  static const struct LocationNameInfo {
-    const char* string;
-    char length;
-    bool allow_plural;
-  } location_names[157] = {
-    { "alley", 5, false }, { "annex", 5, false }, { "arcade", 6, false },
-    { "ave", 3, false }, { "ave.", 4, false }, { "avenue", 6, false },
-    { "alameda", 7, false },
-    { "bayou", 5, false }, { "beach", 5, false }, { "bend", 4, false },
-    { "bluff", 5, true }, { "bottom", 6, false }, { "boulevard", 9, false },
-    { "branch", 6, false }, { "bridge", 6, false }, { "brook", 5, true },
-    { "burg", 4, true }, { "bypass", 6, false }, { "broadway", 8, false },
-    { "camino", 6, false }, { "camp", 4, false }, { "canyon", 6, false },
-    { "cape", 4, false }, { "causeway", 8, false }, { "center", 6, true },
-    { "circle", 6, true }, { "cliff", 5, true }, { "club", 4, false },
-    { "common", 6, false }, { "corner", 6, true }, { "course", 6, false },
-    { "court", 5, true }, { "cove", 4, true }, { "creek", 5, false },
-    { "crescent", 8, false }, { "crest", 5, false }, { "crossing", 8, false },
-    { "crossroad", 9, false }, { "curve", 5, false }, { "circulo", 7, false },
-    { "dale", 4, false }, { "dam", 3, false }, { "divide", 6, false },
-    { "drive", 5, true },
-    { "estate", 6, true }, { "expressway", 10, false },
-    { "extension", 9, true },
-    { "fall", 4, true }, { "ferry", 5, false }, { "field", 5, true },
-    { "flat", 4, true }, { "ford", 4, true }, { "forest", 6, false },
-    { "forge", 5, true }, { "fork", 4, true }, { "fort", 4, false },
-    { "freeway", 7, false },
-    { "garden", 6, true }, { "gateway", 7, false }, { "glen", 4, true },
-    { "green", 5, true }, { "grove", 5, true },
-    { "harbor", 6, true }, { "haven", 5, false }, { "heights", 7, false },
-    { "highway", 7, false }, { "hill", 4, true }, { "hollow", 6, false },
-    { "inlet", 5, false }, { "island", 6, true }, { "isle", 4, false },
-    { "junction", 8, true },
-    { "key", 3, true }, { "knoll", 5, true },
-    { "lake", 4, true }, { "land", 4, false }, { "landing", 7, false },
-    { "lane", 4, false }, { "light", 5, true }, { "loaf", 4, false },
-    { "lock", 4, true }, { "lodge", 5, false }, { "loop", 4, false },
-    { "mall", 4, false }, { "manor", 5, true }, { "meadow", 6, true },
-    { "mews", 4, false }, { "mill", 4, true }, { "mission", 7, false },
-    { "motorway", 8, false }, { "mount", 5, false }, { "mountain", 8, true },
-    { "neck", 4, false },
-    { "orchard", 7, false }, { "oval", 4, false }, { "overpass", 8, false },
-    { "park", 4, true }, { "parkway", 7, true }, { "pass", 4, false },
-    { "passage", 7, false }, { "path", 4, false }, { "pike", 4, false },
-    { "pine", 4, true }, { "plain", 5, true }, { "plaza", 5, false },
-    { "point", 5, true }, { "port", 4, true }, { "prairie", 7, false },
-    { "privada", 7, false },
-    { "radial", 6, false }, { "ramp", 4, false }, { "ranch", 5, false },
-    { "rapid", 5, true }, { "rest", 4, false }, { "ridge", 5, true },
-    { "river", 5, false }, { "road", 4, true }, { "route", 5, false },
-    { "row", 3, false }, { "rue", 3, false }, { "run", 3, false },
-    { "shoal", 5, true }, { "shore", 5, true }, { "skyway", 6, false },
-    { "spring", 6, true }, { "spur", 4, true }, { "square", 6, true },
-    { "station", 7, false }, { "stravenue", 9, false }, { "stream", 6, false },
-    { "st", 2, false }, { "st.", 3, false }, { "street", 6, true },
-    { "summit", 6, false }, { "speedway", 8, false },
-    { "terrace", 7, false }, { "throughway", 10, false }, { "trace", 5, false },
-    { "track", 5, false }, { "trafficway", 10, false }, { "trail", 5, false },
-    { "tunnel", 6, false }, { "turnpike", 8, false },
-    { "underpass", 9, false }, { "union", 5, true },
-    { "valley", 6, true }, { "viaduct", 7, false }, { "view", 4, true },
-    { "village", 7, true }, { "ville", 5, false }, { "vista", 5, false },
-    { "walk", 4, true }, { "wall", 4, false }, { "way", 3, true },
-    { "well", 4, true },
-    { "xing", 4, false }, { "xrd", 3, false }
-  };
-
-  // Accumulative number of location names for each starting letter.
-  static const int location_names_accumulative[25] = {
-      0,   7,  19,  40,  44,
-     47,  57,  62,  68,  71,
-     72,  74,  83,  92,  93,
-     96, 109, 109, 121, 135,
-    143, 145, 151, 155, 157
-  };
-
-  DCHECK_EQ(
-      location_names_accumulative[arraysize(location_names_accumulative) - 1],
-      static_cast<int>(ARRAYSIZE_UNSAFE(location_names)));
-
-  if (!IsAsciiAlpha(*word.begin))
-    return false;
-
-  // No location names start with y, z.
-  char16 first_letter = base::ToLowerASCII(*word.begin);
-  if (first_letter > 'x')
-    return false;
-
-  DCHECK(first_letter >= 'a');
-  int index = first_letter - 'a';
-  int length = std::distance(word.begin, word.end);
-  for (int i = location_names_accumulative[index];
-      i < location_names_accumulative[index + 1]; ++i) {
-    if (location_names[i].length != length &&
-        (location_names[i].allow_plural &&
-         location_names[i].length + 1 != length)) {
-      continue;
-    }
-
-    if (LowerCaseEqualsASCIIWithPlural(word.begin, word.end,
-                                       location_names[i].string,
-                                       location_names[i].allow_plural)) {
-      return true;
-    }
-  }
-
-  return false;
-}
-
 }  // namespace content