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Polish (minor)

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This commit is contained in:
Rossen Stoyanchev
2013-05-06 14:33:00 -04:00
parent 7845ebc428
commit d89b18613f
1 changed files with 10 additions and 5 deletions
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15
spring-websocket/src/main/java/org/springframework/web/socket/sockjs/SockJsFrame.java
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@@ -78,24 +78,29 @@ public class SockJsFrame {
return this.content.getBytes(Charset.forName("UTF-8"));
}
public static String escapeCharacters(char[] chars) {
/**
* See "JSON Unicode Encoding" section of SockJS protocol.
*/
public static String escapeCharacters(char[] characters) {
StringBuilder result = new StringBuilder();
for (char ch : chars) {
if (isSockJsEscapeCharacter(ch)) {
for (char c : characters) {
if (isSockJsEscapeCharacter(c)) {
result.append('\\').append('u');
String hex = Integer.toHexString(ch).toLowerCase();
String hex = Integer.toHexString(c).toLowerCase();
for (int i = 0; i < (4 - hex.length()); i++) {
result.append('0');
}
result.append(hex);
}
else {
result.append(ch);
result.append(c);
}
}
return result.toString();
}
// See `escapable_by_server` var in SockJS protocol (under "JSON Unicode Encoding")
private static boolean isSockJsEscapeCharacter(char ch) {
return (ch >= '\u0000' && ch <= '\u001F') || (ch >= '\u200C' && ch <= '\u200F')
|| (ch >= '\u2028' && ch <= '\u202F') || (ch >= '\u2060' && ch <= '\u206F')