Add a Java FindAddress implentation.
This stops calling findAddress (possibly indirectly via Linkify) from
loading webview native code, resulting in a performance and memory
improvement for those apps that call WebView#findAddress but do not
otherwise use WebView.
Bug: 22362008
Test: Existing WebView CTS test.
Change-Id: I5fcab725ceaf0d6a00e931d3b6cd2f3799d68391
diff --git a/core/java/android/webkit/FindAddress.java b/core/java/android/webkit/FindAddress.java
new file mode 100644
index 0000000..31b2427
--- /dev/null
+++ b/core/java/android/webkit/FindAddress.java
@@ -0,0 +1,478 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.webkit;
+
+import java.util.Locale;
+import java.util.regex.MatchResult;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Java implementation of legacy WebView.findAddress algorithm.
+ *
+ * @hide
+ */
+class FindAddress {
+ static class ZipRange {
+ int mLow;
+ int mHigh;
+ int mException1;
+ int mException2;
+ ZipRange(int low, int high, int exception1, int exception2) {
+ mLow = low;
+ mHigh = high;
+ mException1 = exception1;
+ mException2 = exception1;
+ }
+ boolean matches(String zipCode) {
+ int prefix = Integer.parseInt(zipCode.substring(0, 2));
+ return (mLow <= prefix && prefix <= mHigh) || prefix == mException1
+ || prefix == mException2;
+ }
+ }
+
+ // Addresses consist of at least this many words, not including state and zip code.
+ private static final int MIN_ADDRESS_WORDS = 4;
+
+ // Adddresses consist of at most this many words, not including state and zip code.
+ private static final int MAX_ADDRESS_WORDS = 14;
+
+ // Addresses consist of at most this many lines.
+ private static final int MAX_ADDRESS_LINES = 5;
+
+ // No words in an address are longer than this many characters.
+ private static final int kMaxAddressNameWordLength = 25;
+
+ // Location name should be in the first MAX_LOCATION_NAME_DISTANCE words
+ private static final int MAX_LOCATION_NAME_DISTANCE = 5;
+
+ private static final ZipRange[] sStateZipCodeRanges = {
+ new ZipRange(99, 99, -1, -1), // AK Alaska.
+ new ZipRange(35, 36, -1, -1), // AL Alabama.
+ new ZipRange(71, 72, -1, -1), // AR Arkansas.
+ new ZipRange(96, 96, -1, -1), // AS American Samoa.
+ new ZipRange(85, 86, -1, -1), // AZ Arizona.
+ new ZipRange(90, 96, -1, -1), // CA California.
+ new ZipRange(80, 81, -1, -1), // CO Colorado.
+ new ZipRange(6, 6, -1, -1), // CT Connecticut.
+ new ZipRange(20, 20, -1, -1), // DC District of Columbia.
+ new ZipRange(19, 19, -1, -1), // DE Delaware.
+ new ZipRange(32, 34, -1, -1), // FL Florida.
+ new ZipRange(96, 96, -1, -1), // FM Federated States of Micronesia.
+ new ZipRange(30, 31, -1, -1), // GA Georgia.
+ new ZipRange(96, 96, -1, -1), // GU Guam.
+ new ZipRange(96, 96, -1, -1), // HI Hawaii.
+ new ZipRange(50, 52, -1, -1), // IA Iowa.
+ new ZipRange(83, 83, -1, -1), // ID Idaho.
+ new ZipRange(60, 62, -1, -1), // IL Illinois.
+ new ZipRange(46, 47, -1, -1), // IN Indiana.
+ new ZipRange(66, 67, 73, -1), // KS Kansas.
+ new ZipRange(40, 42, -1, -1), // KY Kentucky.
+ new ZipRange(70, 71, -1, -1), // LA Louisiana.
+ new ZipRange(1, 2, -1, -1), // MA Massachusetts.
+ new ZipRange(20, 21, -1, -1), // MD Maryland.
+ new ZipRange(3, 4, -1, -1), // ME Maine.
+ new ZipRange(96, 96, -1, -1), // MH Marshall Islands.
+ new ZipRange(48, 49, -1, -1), // MI Michigan.
+ new ZipRange(55, 56, -1, -1), // MN Minnesota.
+ new ZipRange(63, 65, -1, -1), // MO Missouri.
+ new ZipRange(96, 96, -1, -1), // MP Northern Mariana Islands.
+ new ZipRange(38, 39, -1, -1), // MS Mississippi.
+ new ZipRange(55, 56, -1, -1), // MT Montana.
+ new ZipRange(27, 28, -1, -1), // NC North Carolina.
+ new ZipRange(58, 58, -1, -1), // ND North Dakota.
+ new ZipRange(68, 69, -1, -1), // NE Nebraska.
+ new ZipRange(3, 4, -1, -1), // NH New Hampshire.
+ new ZipRange(7, 8, -1, -1), // NJ New Jersey.
+ new ZipRange(87, 88, 86, -1), // NM New Mexico.
+ new ZipRange(88, 89, 96, -1), // NV Nevada.
+ new ZipRange(10, 14, 0, 6), // NY New York.
+ new ZipRange(43, 45, -1, -1), // OH Ohio.
+ new ZipRange(73, 74, -1, -1), // OK Oklahoma.
+ new ZipRange(97, 97, -1, -1), // OR Oregon.
+ new ZipRange(15, 19, -1, -1), // PA Pennsylvania.
+ new ZipRange(6, 6, 0, 9), // PR Puerto Rico.
+ new ZipRange(96, 96, -1, -1), // PW Palau.
+ new ZipRange(2, 2, -1, -1), // RI Rhode Island.
+ new ZipRange(29, 29, -1, -1), // SC South Carolina.
+ new ZipRange(57, 57, -1, -1), // SD South Dakota.
+ new ZipRange(37, 38, -1, -1), // TN Tennessee.
+ new ZipRange(75, 79, 87, 88), // TX Texas.
+ new ZipRange(84, 84, -1, -1), // UT Utah.
+ new ZipRange(22, 24, 20, -1), // VA Virginia.
+ new ZipRange(6, 9, -1, -1), // VI Virgin Islands.
+ new ZipRange(5, 5, -1, -1), // VT Vermont.
+ new ZipRange(98, 99, -1, -1), // WA Washington.
+ new ZipRange(53, 54, -1, -1), // WI Wisconsin.
+ new ZipRange(24, 26, -1, -1), // WV West Virginia.
+ new ZipRange(82, 83, -1, -1) // WY Wyoming.
+ };
+
+ // Newlines
+ private static final String NL = "\n\u000B\u000C\r\u0085\u2028\u2029";
+
+ // Space characters
+ private static final String SP = "\u0009\u0020\u00A0\u1680\u2000\u2001"
+ + "\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F"
+ + "\u205F\u3000";
+
+ // Whitespace
+ private static final String WS = SP + NL;
+
+ // Characters that are considered word delimiters.
+ private static final String WORD_DELIM = ",*\u2022" + WS;
+
+ // Lookahead for word end.
+ private static final String WORD_END = "(?=[" + WORD_DELIM + "]|$)";
+
+ // Address words are a sequence of non-delimiter characters.
+ private static final Pattern sWordRe =
+ Pattern.compile("[^" + WORD_DELIM + "]+" + WORD_END, Pattern.CASE_INSENSITIVE);
+
+ // Characters that are considered suffix delimiters for house numbers.
+ private static final String HOUSE_POST_DELIM = ",\"'" + WS;
+
+ // Lookahead for house end.
+ private static final String HOUSE_END = "(?=[" + HOUSE_POST_DELIM + "]|$)";
+
+ // Characters that are considered prefix delimiters for house numbers.
+ private static final String HOUSE_PRE_DELIM = ":" + HOUSE_POST_DELIM;
+
+ // A house number component is "one" or a number, optionally
+ // followed by a single alphabetic character, or
+ private static final String HOUSE_COMPONENT = "(?:one|\\d+([a-z](?=[^a-z]|$)|st|nd|rd|th)?)";
+
+ // House numbers are a repetition of |HOUSE_COMPONENT|, separated by -, and followed by
+ // a delimiter character.
+ private static final Pattern sHouseNumberRe =
+ Pattern.compile(HOUSE_COMPONENT + "(?:-" + HOUSE_COMPONENT + ")*" + HOUSE_END,
+ Pattern.CASE_INSENSITIVE);
+
+ // XXX: do we want to accept whitespace other than 0x20 in state names?
+ private static final Pattern sStateRe = Pattern.compile("(?:"
+ + "(ak|alaska)|"
+ + "(al|alabama)|"
+ + "(ar|arkansas)|"
+ + "(as|american[" + SP + "]+samoa)|"
+ + "(az|arizona)|"
+ + "(ca|california)|"
+ + "(co|colorado)|"
+ + "(ct|connecticut)|"
+ + "(dc|district[" + SP + "]+of[" + SP + "]+columbia)|"
+ + "(de|delaware)|"
+ + "(fl|florida)|"
+ + "(fm|federated[" + SP + "]+states[" + SP + "]+of[" + SP + "]+micronesia)|"
+ + "(ga|georgia)|"
+ + "(gu|guam)|"
+ + "(hi|hawaii)|"
+ + "(ia|iowa)|"
+ + "(id|idaho)|"
+ + "(il|illinois)|"
+ + "(in|indiana)|"
+ + "(ks|kansas)|"
+ + "(ky|kentucky)|"
+ + "(la|louisiana)|"
+ + "(ma|massachusetts)|"
+ + "(md|maryland)|"
+ + "(me|maine)|"
+ + "(mh|marshall[" + SP + "]+islands)|"
+ + "(mi|michigan)|"
+ + "(mn|minnesota)|"
+ + "(mo|missouri)|"
+ + "(mp|northern[" + SP + "]+mariana[" + SP + "]+islands)|"
+ + "(ms|mississippi)|"
+ + "(mt|montana)|"
+ + "(nc|north[" + SP + "]+carolina)|"
+ + "(nd|north[" + SP + "]+dakota)|"
+ + "(ne|nebraska)|"
+ + "(nh|new[" + SP + "]+hampshire)|"
+ + "(nj|new[" + SP + "]+jersey)|"
+ + "(nm|new[" + SP + "]+mexico)|"
+ + "(nv|nevada)|"
+ + "(ny|new[" + SP + "]+york)|"
+ + "(oh|ohio)|"
+ + "(ok|oklahoma)|"
+ + "(or|oregon)|"
+ + "(pa|pennsylvania)|"
+ + "(pr|puerto[" + SP + "]+rico)|"
+ + "(pw|palau)|"
+ + "(ri|rhode[" + SP + "]+island)|"
+ + "(sc|south[" + SP + "]+carolina)|"
+ + "(sd|south[" + SP + "]+dakota)|"
+ + "(tn|tennessee)|"
+ + "(tx|texas)|"
+ + "(ut|utah)|"
+ + "(va|virginia)|"
+ + "(vi|virgin[" + SP + "]+islands)|"
+ + "(vt|vermont)|"
+ + "(wa|washington)|"
+ + "(wi|wisconsin)|"
+ + "(wv|west[" + SP + "]+virginia)|"
+ + "(wy|wyoming)"
+ + ")" + WORD_END,
+ Pattern.CASE_INSENSITIVE);
+
+ private static final Pattern sLocationNameRe = Pattern.compile("(?:"
+ + "alley|annex|arcade|ave[.]?|avenue|alameda|bayou|"
+ + "beach|bend|bluffs?|bottom|boulevard|branch|bridge|"
+ + "brooks?|burgs?|bypass|broadway|camino|camp|canyon|"
+ + "cape|causeway|centers?|circles?|cliffs?|club|common|"
+ + "corners?|course|courts?|coves?|creek|crescent|crest|"
+ + "crossing|crossroad|curve|circulo|dale|dam|divide|"
+ + "drives?|estates?|expressway|extensions?|falls?|ferry|"
+ + "fields?|flats?|fords?|forest|forges?|forks?|fort|"
+ + "freeway|gardens?|gateway|glens?|greens?|groves?|"
+ + "harbors?|haven|heights|highway|hills?|hollow|inlet|"
+ + "islands?|isle|junctions?|keys?|knolls?|lakes?|land|"
+ + "landing|lane|lights?|loaf|locks?|lodge|loop|mall|"
+ + "manors?|meadows?|mews|mills?|mission|motorway|mount|"
+ + "mountains?|neck|orchard|oval|overpass|parks?|"
+ + "parkways?|pass|passage|path|pike|pines?|plains?|"
+ + "plaza|points?|ports?|prairie|privada|radial|ramp|"
+ + "ranch|rapids?|rd[.]?|rest|ridges?|river|roads?|route|"
+ + "row|rue|run|shoals?|shores?|skyway|springs?|spurs?|"
+ + "squares?|station|stravenue|stream|st[.]?|streets?|"
+ + "summit|speedway|terrace|throughway|trace|track|"
+ + "trafficway|trail|tunnel|turnpike|underpass|unions?|"
+ + "valleys?|viaduct|views?|villages?|ville|vista|walks?|"
+ + "wall|ways?|wells?|xing|xrd)" + WORD_END,
+ Pattern.CASE_INSENSITIVE);
+
+ private static final Pattern sSuffixedNumberRe =
+ Pattern.compile("(\\d+)(st|nd|rd|th)", Pattern.CASE_INSENSITIVE);
+
+ private static final Pattern sZipCodeRe =
+ Pattern.compile("(?:\\d{5}(?:-\\d{4})?)" + WORD_END, Pattern.CASE_INSENSITIVE);
+
+ private static boolean checkHouseNumber(String houseNumber) {
+ // Make sure that there are at most 5 digits.
+ int digitCount = 0;
+ for (int i = 0; i < houseNumber.length(); ++i) {
+ if (Character.isDigit(houseNumber.charAt(i))) ++digitCount;
+ }
+ if (digitCount > 5) return false;
+
+ // Make sure that any ordinals are valid.
+ Matcher suffixMatcher = sSuffixedNumberRe.matcher(houseNumber);
+ while (suffixMatcher.find()) {
+ int num = Integer.parseInt(suffixMatcher.group(1));
+ if (num == 0) {
+ return false; // 0th is invalid.
+ }
+ String suffix = suffixMatcher.group(2).toLowerCase(Locale.getDefault());
+ switch (num % 10) {
+ case 1:
+ return suffix.equals(num % 100 == 11 ? "th" : "st");
+ case 2:
+ return suffix.equals(num % 100 == 12 ? "th" : "nd");
+ case 3:
+ return suffix.equals(num % 100 == 13 ? "th" : "rd");
+ default:
+ return suffix.equals("th");
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Attempt to match a house number beginnning at position offset
+ * in content. The house number must be followed by a word
+ * delimiter or the end of the string, and if offset is non-zero,
+ * then it must also be preceded by a word delimiter.
+ *
+ * @return a MatchResult if a valid house number was found.
+ */
+ private static MatchResult matchHouseNumber(String content, int offset) {
+ if (offset > 0 && HOUSE_PRE_DELIM.indexOf(content.charAt(offset - 1)) == -1) return null;
+ Matcher matcher = sHouseNumberRe.matcher(content).region(offset, content.length());
+ if (matcher.lookingAt()) {
+ MatchResult matchResult = matcher.toMatchResult();
+ if (checkHouseNumber(matchResult.group(0))) return matchResult;
+ }
+ return null;
+ }
+
+ /**
+ * Attempt to match a US state beginnning at position offset in
+ * content. The matching state must be followed by a word
+ * delimiter or the end of the string, and if offset is non-zero,
+ * then it must also be preceded by a word delimiter.
+ *
+ * @return a MatchResult if a valid US state (or two letter code)
+ * was found.
+ */
+ private static MatchResult matchState(String content, int offset) {
+ if (offset > 0 && WORD_DELIM.indexOf(content.charAt(offset - 1)) == -1) return null;
+ Matcher stateMatcher = sStateRe.matcher(content).region(offset, content.length());
+ return stateMatcher.lookingAt() ? stateMatcher.toMatchResult() : null;
+ }
+
+ /**
+ * Test whether zipCode matches the U.S. zip code format (ddddd or
+ * ddddd-dddd) and is within the expected range, given that
+ * stateMatch is a match of sStateRe.
+ *
+ * @return true if zipCode is a valid zip code, is legal for the
+ * matched state, and is followed by a word delimiter or the end
+ * of the string.
+ */
+ private static boolean isValidZipCode(String zipCode, MatchResult stateMatch) {
+ if (stateMatch == null) return false;
+ // Work out the index of the state, based on which group matched.
+ int stateIndex = stateMatch.groupCount();
+ while (stateIndex > 0) {
+ if (stateMatch.group(stateIndex--) != null) break;
+ }
+ return sZipCodeRe.matcher(zipCode).matches()
+ && sStateZipCodeRanges[stateIndex].matches(zipCode);
+ }
+
+ /**
+ * Test whether location is one of the valid locations.
+ *
+ * @return true if location starts with a valid location name
+ * followed by a word delimiter or the end of the string.
+ */
+ private static boolean isValidLocationName(String location) {
+ return sLocationNameRe.matcher(location).matches();
+ }
+
+ /**
+ * Attempt to match a complete address in content, starting with
+ * houseNumberMatch.
+ *
+ * @param content The string to search.
+ * @param houseNumberMatch A matching house number to start extending.
+ * @return +ve: the end of the match
+ * +ve: the position to restart searching for house numbers, negated.
+ */
+ private static int attemptMatch(String content, MatchResult houseNumberMatch) {
+ int restartPos = -1;
+ int nonZipMatch = -1;
+ int it = houseNumberMatch.end();
+ int numLines = 1;
+ boolean consecutiveHouseNumbers = true;
+ boolean foundLocationName = false;
+ int wordCount = 1;
+ String lastWord = "";
+
+ Matcher matcher = sWordRe.matcher(content);
+
+ for (; it < content.length(); lastWord = matcher.group(0), it = matcher.end()) {
+ if (!matcher.find(it)) {
+ // No more words in the input sequence.
+ return -content.length();
+ }
+ if (matcher.end() - matcher.start() > kMaxAddressNameWordLength) {
+ // Word is too long to be part of an address. Fail.
+ return -matcher.end();
+ }
+
+ // Count the number of newlines we just consumed.
+ while (it < matcher.start()) {
+ if (NL.indexOf(content.charAt(it++)) != -1) ++numLines;
+ }
+
+ // Consumed too many lines. Fail.
+ if (numLines > MAX_ADDRESS_LINES) break;
+
+ // Consumed too many words. Fail.
+ if (++wordCount > MAX_ADDRESS_WORDS) break;
+
+ if (matchHouseNumber(content, it) != null) {
+ if (consecutiveHouseNumbers && numLines > 1) {
+ // Last line ended with a number, and this this line starts with one.
+ // Restart at this number.
+ return -it;
+ }
+ // Remember the position of this match as the restart position.
+ if (restartPos == -1) restartPos = it;
+ continue;
+ }
+
+ consecutiveHouseNumbers = false;
+
+ if (isValidLocationName(matcher.group(0))) {
+ foundLocationName = true;
+ continue;
+ }
+
+ if (wordCount == MAX_LOCATION_NAME_DISTANCE && !foundLocationName) {
+ // Didn't find a location name in time. Fail.
+ it = matcher.end();
+ break;
+ }
+
+ if (foundLocationName && wordCount > MIN_ADDRESS_WORDS) {
+ // We can now attempt to match a state.
+ MatchResult stateMatch = matchState(content, it);
+ if (stateMatch != null) {
+ if (lastWord.equals("et") && stateMatch.group(0).equals("al")) {
+ // Reject "et al" as a false postitive.
+ it = stateMatch.end();
+ break;
+ }
+
+ // At this point we've matched a state; try to match a zip code after it.
+ Matcher zipMatcher = sWordRe.matcher(content);
+ if (zipMatcher.find(stateMatch.end())
+ && isValidZipCode(zipMatcher.group(0), stateMatch)) {
+ return zipMatcher.end();
+ }
+ // The content ends with a state but no zip
+ // code. This is a legal match according to the
+ // documentation. N.B. This differs from the
+ // original c++ implementation, which only allowed
+ // the zip code to be optional at the end of the
+ // string, which presumably is a bug. Now we
+ // prefer to find a match with a zip code, but
+ // remember non-zip matches and return them if
+ // necessary.
+ nonZipMatch = stateMatch.end();
+ }
+ }
+ }
+
+ if (nonZipMatch > 0) return nonZipMatch;
+
+ return -(restartPos > 0 ? restartPos : it);
+ }
+
+ /**
+ * Return the first matching address in content.
+ *
+ * @param content The string to search.
+ * @return The first valid address, or null if no address was matched.
+ */
+ static String findAddress(String content) {
+ Matcher houseNumberMatcher = sHouseNumberRe.matcher(content);
+ int start = 0;
+ while (houseNumberMatcher.find(start)) {
+ if (checkHouseNumber(houseNumberMatcher.group(0))) {
+ start = houseNumberMatcher.start();
+ int end = attemptMatch(content, houseNumberMatcher);
+ if (end > 0) {
+ return content.substring(start, end);
+ }
+ start = -end;
+ } else {
+ start = houseNumberMatcher.end();
+ }
+ }
+ return null;
+ }
+}
diff --git a/core/java/android/webkit/WebView.java b/core/java/android/webkit/WebView.java
index 637b60e..244b6bd 100644
--- a/core/java/android/webkit/WebView.java
+++ b/core/java/android/webkit/WebView.java
@@ -1797,9 +1797,10 @@
* @return the address, or if no address is found, null
*/
public static String findAddress(String addr) {
- // TODO: Rewrite this in Java so it is not needed to start up chromium
- // Could also be deprecated
- return getFactory().getStatics().findAddress(addr);
+ if (addr == null) {
+ throw new NullPointerException("addr is null");
+ }
+ return FindAddress.findAddress(addr);
}
/**