com.ctc.wstx.io.TextEscaper Maven / Gradle / Ivy
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Woodstox is a high-performance XML processor that
implements Stax (JSR-173) and SAX2 APIs
package com.ctc.wstx.io;
import java.io.*;
public final class TextEscaper
{
private TextEscaper() { }
/*
/////////////////////////////////////////////////////////////
// Static utility methods, for non-state-aware escaping
/////////////////////////////////////////////////////////////
*/
public static void writeEscapedAttrValue(Writer w, String value)
throws IOException
{
int i = 0;
int len = value.length();
do {
int start = i;
char c = '\u0000';
for (; i < len; ++i) {
c = value.charAt(i);
if (c == '<' || c == '&' || c == '"') {
break;
}
}
int outLen = i - start;
if (outLen > 0) {
w.write(value, start, outLen);
}
if (i < len) {
if (c == '<') {
w.write("<");
} else if (c == '&') {
w.write("&");
} else if (c == '"') {
w.write(""");
}
}
} while (++i < len);
}
/**
* Quoting method used when outputting content that will be part of
* DTD (internal/external subset). Additional quoting is needed for
* percentage char, which signals parameter entities.
*/
public static void outputDTDText(Writer w, char[] ch, int offset, int len)
throws IOException
{
int i = offset;
len += offset;
do {
int start = i;
char c = '\u0000';
for (; i < len; ++i) {
c = ch[i];
if (c == '&' || c == '%' || c == '"') {
break;
}
}
int outLen = i - start;
if (outLen > 0) {
w.write(ch, start, outLen);
}
if (i < len) {
if (c == '&') {
/* Only need to quote to prevent it from being accidentally
* taken as part of char entity...
*/
w.write("&");
} else if (c == '%') {
// Need to quote, to prevent use as Param Entity marker
w.write("%");
} else if (c == '"') {
// Need to quote assuming it encloses entity value
w.write(""");
}
}
} while (++i < len);
}
}