Java Java String Format toJavaString(String buf)

Description

Escape characters unallowed in the Java source files.

License

Open Source License

Declaration

public static String toJavaString(String buf) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /**/*  w  w  w .j  a  v  a  2s.  c  o  m*/
     * Escape characters unallowed in the Java source files.
     */
    public static String toJavaString(String buf) {
        return escape(buf, "\\u");
    }

    private static String escape(String buf, String hexEscape) {
        int len = buf.length();

        StringBuffer result = new StringBuffer(len);

        result.append('\"');
        for (int i = 0; i < len; i++) {
            char ch = buf.charAt(i);
            int esc = "\r\t\n\"\\".indexOf(ch);
            if (esc != -1) {
                result.append('\\');
                result.append("rtn\"\\".charAt(esc));
            } else if (ch < 0x20 || ch >= 0x80) {
                // non-ascii character. Print as \\uXXXX
                result.append(hexEscape);
                result.append(Integer.toHexString((ch >> 12) & 15));
                result.append(Integer.toHexString((ch >> 8) & 15));
                result.append(Integer.toHexString((ch >> 4) & 15));
                result.append(Integer.toHexString((ch >> 0) & 15));
            } else {
                // printable ascii character
                result.append(ch);
            }
            //            result.append(',');  debug
        }
        result.append('\"');

        return result.toString();
    }
}

Related

1. toJavaScriptSafeString(String content)
2. toJavaSecs(long secs)
3. toJavaSourceType(String type)
4. toJavaStaticIdentifier(String string)
5. toJavaString(final String s)
6. toJavaString(String text)
7. toJavaTime(double time)
8. toJavaTypeIdentifier(String string)
9. toJavaTypeName(String edmTypeName)