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Merge "Fixing DatabaseUtils to detect malformed UTF-16 strings" into rvc-dev

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This commit is contained in:
Kunal Malhotra
2023-07-27 20:09:42 +00:00
committed by Android (Google) Code Review
parent 5d31bd1c3b fb4a72e394
commit 0dcc5c6eb5
1 changed files with 23 additions and 9 deletions
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32
core/java/android/database/DatabaseUtils.java
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@@ -511,17 +511,31 @@ public class DatabaseUtils {
*/
public static void appendEscapedSQLString(StringBuilder sb, String sqlString) {
sb.append('\'');
if (sqlString.indexOf('\'') != -1) {
int length = sqlString.length();
for (int i = 0; i < length; i++) {
char c = sqlString.charAt(i);
if (c == '\'') {
sb.append('\'');
int length = sqlString.length();
for (int i = 0; i < length; i++) {
char c = sqlString.charAt(i);
if (Character.isHighSurrogate(c)) {
if (i == length - 1) {
continue;
}
if (Character.isLowSurrogate(sqlString.charAt(i + 1))) {
// add them both
sb.append(c);
sb.append(sqlString.charAt(i + 1));
continue;
} else {
// this is a lone surrogate, skip it
continue;
}
sb.append(c);
}
} else
sb.append(sqlString);
if (Character.isLowSurrogate(c)) {
continue;
}
if (c == '\'') {
sb.append('\'');
}
sb.append(c);
}
sb.append('\'');
}