diff options
Diffstat (limited to 'vespajlib/src')
-rw-r--r-- | vespajlib/src/main/java/com/yahoo/text/Text.java | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/vespajlib/src/main/java/com/yahoo/text/Text.java b/vespajlib/src/main/java/com/yahoo/text/Text.java index 662100aa8ea..be34a9e3ab0 100644 --- a/vespajlib/src/main/java/com/yahoo/text/Text.java +++ b/vespajlib/src/main/java/com/yahoo/text/Text.java @@ -110,6 +110,23 @@ public final class Text { return OptionalInt.empty(); } + /** + * Validates that the given string value only contains text characters. + */ + public static boolean isValidTextString(String string) { + for (int i = 0; i < string.length(); ) { + int codePoint = string.codePointAt(i); + if ( ! Text.isTextCharacter(codePoint)) return false; + + int charCount = Character.charCount(codePoint); + if (Character.isHighSurrogate(string.charAt(i))) { + if ( (charCount == 1) || !Character.isLowSurrogate(string.charAt(i+1))) return false; + } + i += charCount; + } + return true; + } + /** Returns whether the given code point is displayable. */ public static boolean isDisplayable(int codePoint) { switch (Character.getType(codePoint)) { |