Add isPrintableAscii() and isPrintableAsciiOnly() to TextUtils.java as hidden methods, and make vCard code use them.

In the future, ContactsProvider will use those methods.
See also the change 34604

Internal issue number: 2275764, 2195990

1 files changed, 22 insertions, 0 deletions

diff --git a/core/java/android/text/TextUtils.java b/core/java/android/text/TextUtils.java
index 53096dd..afb22ac 100644
--- a/core/java/android/text/TextUtils.java
+++ b/core/java/android/text/TextUtils.java
@@ -1501,6 +1501,28 @@ public class TextUtils {
     }
 
     /**
+     * @hide
+     */
+    public static boolean isPrintableAscii(final char c) {
+        final int asciiFirst = 0x20;
+        final int asciiLast = 0x7E;  // included
+        return (asciiFirst <= c && c <= asciiLast) || c == '\r' || c == '\n';
+    }
+
+    /**
+     * @hide
+     */
+    public static boolean isPrintableAsciiOnly(final CharSequence str) {
+        final int len = str.length();
+        for (int i = 0; i < len; i++) {
+            if (!isPrintableAscii(str.charAt(i))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
      * Capitalization mode for {@link #getCapsMode}: capitalize all
      * characters.  This value is explicitly defined to be the same as
      * {@link InputType#TYPE_TEXT_FLAG_CAP_CHARACTERS}.