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Diffstat (limited to 'common/src')
| -rw-r--r-- | common/src/com/android/common/Patterns.java | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/common/src/com/android/common/Patterns.java b/common/src/com/android/common/Patterns.java new file mode 100644 index 0000000..2eab3e1 --- /dev/null +++ b/common/src/com/android/common/Patterns.java @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2007 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 com.android.common; + +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * Commonly used regular expression patterns. + */ +public class Patterns { + /** + * Regular expression pattern to match all IANA top-level domains. + * List accurate as of 2007/06/15. List taken from: + * http://data.iana.org/TLD/tlds-alpha-by-domain.txt + * This pattern is auto-generated by //device/tools/make-iana-tld-pattern.py + */ + public static final Pattern TOP_LEVEL_DOMAIN + = Pattern.compile( + "((aero|arpa|asia|a[cdefgilmnoqrstuwxz])" + + "|(biz|b[abdefghijmnorstvwyz])" + + "|(cat|com|coop|c[acdfghiklmnoruvxyz])" + + "|d[ejkmoz]" + + "|(edu|e[cegrstu])" + + "|f[ijkmor]" + + "|(gov|g[abdefghilmnpqrstuwy])" + + "|h[kmnrtu]" + + "|(info|int|i[delmnoqrst])" + + "|(jobs|j[emop])" + + "|k[eghimnrwyz]" + + "|l[abcikrstuvy]" + + "|(mil|mobi|museum|m[acdghklmnopqrstuvwxyz])" + + "|(name|net|n[acefgilopruz])" + + "|(org|om)" + + "|(pro|p[aefghklmnrstwy])" + + "|qa" + + "|r[eouw]" + + "|s[abcdeghijklmnortuvyz]" + + "|(tel|travel|t[cdfghjklmnoprtvwz])" + + "|u[agkmsyz]" + + "|v[aceginu]" + + "|w[fs]" + + "|y[etu]" + + "|z[amw])"); + + /** + * Regular expression pattern to match RFC 1738 URLs + * List accurate as of 2007/06/15. List taken from: + * http://data.iana.org/TLD/tlds-alpha-by-domain.txt + * This pattern is auto-generated by //device/tools/make-iana-tld-pattern.py + */ + public static final Pattern WEB_URL + = Pattern.compile( + "((?:(http|https|Http|Https|rtsp|Rtsp):\\/\\/(?:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)" + + "\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,64}(?:\\:(?:[a-zA-Z0-9\\$\\-\\_" + + "\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,25})?\\@)?)?" + + "((?:(?:[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}\\.)+" // named host + + "(?:" // plus top level domain + + "(?:aero|arpa|asia|a[cdefgilmnoqrstuwxz])" + + "|(?:biz|b[abdefghijmnorstvwyz])" + + "|(?:cat|com|coop|c[acdfghiklmnoruvxyz])" + + "|d[ejkmoz]" + + "|(?:edu|e[cegrstu])" + + "|f[ijkmor]" + + "|(?:gov|g[abdefghilmnpqrstuwy])" + + "|h[kmnrtu]" + + "|(?:info|int|i[delmnoqrst])" + + "|(?:jobs|j[emop])" + + "|k[eghimnrwyz]" + + "|l[abcikrstuvy]" + + "|(?:mil|mobi|museum|m[acdghklmnopqrstuvwxyz])" + + "|(?:name|net|n[acefgilopruz])" + + "|(?:org|om)" + + "|(?:pro|p[aefghklmnrstwy])" + + "|qa" + + "|r[eouw]" + + "|s[abcdeghijklmnortuvyz]" + + "|(?:tel|travel|t[cdfghjklmnoprtvwz])" + + "|u[agkmsyz]" + + "|v[aceginu]" + + "|w[fs]" + + "|y[etu]" + + "|z[amw]))" + + "|(?:(?:25[0-5]|2[0-4]" // or ip address + + "[0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\\.(?:25[0-5]|2[0-4][0-9]" + + "|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(?:25[0-5]|2[0-4][0-9]|[0-1]" + + "[0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(?:25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}" + + "|[1-9][0-9]|[0-9])))" + + "(?:\\:\\d{1,5})?)" // plus option port number + + "(\\/(?:(?:[a-zA-Z0-9\\;\\/\\?\\:\\@\\&\\=\\#\\~" // plus option query params + + "\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?" + + "(?:\\b|$)"); // and finally, a word boundary or end of + // input. This is to stop foo.sure from + // matching as foo.su + + public static final Pattern IP_ADDRESS + = Pattern.compile( + "((25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\\.(25[0-5]|2[0-4]" + + "[0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1]" + + "[0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}" + + "|[1-9][0-9]|[0-9]))"); + + public static final Pattern DOMAIN_NAME + = Pattern.compile( + "(((([a-zA-Z0-9][a-zA-Z0-9\\-]*)*[a-zA-Z0-9]\\.)+" + + TOP_LEVEL_DOMAIN + ")|" + + IP_ADDRESS + ")"); + + public static final Pattern EMAIL_ADDRESS + = Pattern.compile( + "[a-zA-Z0-9\\+\\.\\_\\%\\-]{1,256}" + + "\\@" + + "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + + "(" + + "\\." + + "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + + ")+" + ); + + /** + * This pattern is intended for searching for things that look like they + * might be phone numbers in arbitrary text, not for validating whether + * something is in fact a phone number. It will miss many things that + * are legitimate phone numbers. + * + * <p> The pattern matches the following: + * <ul> + * <li>Optionally, a + sign followed immediately by one or more digits. Spaces, dots, or dashes + * may follow. + * <li>Optionally, sets of digits in parentheses, separated by spaces, dots, or dashes. + * <li>A string starting and ending with a digit, containing digits, spaces, dots, and/or dashes. + * </ul> + */ + public static final Pattern PHONE + = Pattern.compile( // sdd = space, dot, or dash + "(\\+[0-9]+[\\- \\.]*)?" // +<digits><sdd>* + + "(\\([0-9]+\\)[\\- \\.]*)?" // (<digits>)<sdd>* + + "([0-9][0-9\\- \\.][0-9\\- \\.]+[0-9])"); // <digit><digit|sdd>+<digit> + + /** + * Convenience method to take all of the non-null matching groups in a + * regex Matcher and return them as a concatenated string. + * + * @param matcher The Matcher object from which grouped text will + * be extracted + * + * @return A String comprising all of the non-null matched + * groups concatenated together + */ + public static final String concatGroups(Matcher matcher) { + StringBuilder b = new StringBuilder(); + final int numGroups = matcher.groupCount(); + + for (int i = 1; i <= numGroups; i++) { + String s = matcher.group(i); + + System.err.println("Group(" + i + ") : " + s); + + if (s != null) { + b.append(s); + } + } + + return b.toString(); + } + + /** + * Convenience method to return only the digits and plus signs + * in the matching string. + * + * @param matcher The Matcher object from which digits and plus will + * be extracted + * + * @return A String comprising all of the digits and plus in + * the match + */ + public static final String digitsAndPlusOnly(Matcher matcher) { + StringBuilder buffer = new StringBuilder(); + String matchingRegion = matcher.group(); + + for (int i = 0, size = matchingRegion.length(); i < size; i++) { + char character = matchingRegion.charAt(i); + + if (character == '+' || Character.isDigit(character)) { + buffer.append(character); + } + } + return buffer.toString(); + } + + /** + * Do not create this static utility class. + */ + private Patterns() {} +} |