そもそもは Linkify のWEBリンクがなんだかな, と思い.
使えそうなよくある正規表現がいくつか用意されていたのですな.
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})?\\@)?)?"
+ "(?:" + DOMAIN_NAME + ")"
+ "(?:\\:\\d{1,5})?)"
+ "(\\/(?:(?:[" + GOOD_IRI_CHAR + "\\;\\/\\?\\:\\@\\&\\=\\#\\~"
+ "\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?"
+ "(?:\\b|$)");
public static final Pattern PHONE
= Pattern.compile(
"(\\+[0-9]+[\\- \\.]*)?"
+ "(\\([0-9]+\\)[\\- \\.]*)?"
+ "([0-9][0-9\\- \\.]+[0-9])");
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}" +
")+"
);
platform_frameworks_base/Patterns.java
すぐにそのまま使おう.
if (Patterns.WEB_URL.matcher(text).find()) {
// do something
}
「厳格なのか?」でフィルターをつける場合.
// A match filter that only accepts odd numbers.
MatchFilter oddFilter = new MatchFilter() {
public final boolean acceptMatch(CharSequence s, int start, int end) {
int n = Character.digit(s.charAt(end-1), 10);
return (n & 1) == 1;
}
};
// Match all digits in the pattern but restrict links to only odd
// numbers using the filter.
Pattern pattern = Pattern.compile("[0-9]+");
Linkify.addLinks(text, pattern, "http://...", oddFilter, null);