Examples of java.util.regex.Matcher.appendReplacement()

java.util.regex.Matcher.appendReplacement()
Implements a non-terminal append-and-replace step.
This method performs the following actions:
1. It reads characters from the input sequence, starting at the append position, and appends them to the given string buffer. It stops after reading the last character preceding the previous match, that is, the character at index {@link #start()} - 1.
2. It appends the given replacement string to the string buffer.
3. It sets the append position of this matcher to the index of the last character matched, plus one, that is, to {@link #end()}.
The replacement string may contain references to subsequences captured during the previous match: Each occurrence of $g will be replaced by the result of evaluating {@link #group(int) group}(g). The first number after the $ is always treated as part of the group reference. Subsequent numbers are incorporated into g if they would form a legal group reference. Only the numerals '0' through '9' are considered as potential components of the group reference. If the second group matched the string "foo", for example, then passing the replacement string "$2bar" would cause "foobar" to be appended to the string buffer. A dollar sign ($) may be included as a literal in the replacement string by preceding it with a backslash (\$).
Note that backslashes (\) and dollar signs ($) in the replacement string may cause the results to be different than if it were being treated as a literal replacement string. Dollar signs may be treated as references to captured subsequences as described above, and backslashes are used to escape literal characters in the replacement string.
This method is intended to be used in a loop together with the {@link #appendTail appendTail} and {@link #find find} methods. Thefollowing code, for example, writes one dog two dogs in the yard to the standard-output stream:
```
 Pattern p = Pattern.compile("cat"); Matcher m = p.matcher("one cat two cats in the yard"); StringBuffer sb = new StringBuffer(); while (m.find()) { m.appendReplacement(sb, "dog"); } m.appendTail(sb); System.out.println(sb.toString());
```
@param sb The target string buffer @param replacement The replacement string @return This matcher @throws IllegalStateException If no match has yet been attempted, or if the previous match operation failed @throws IndexOutOfBoundsException If the replacement string refers to a capturing group that does not exist in the pattern

        do { //use do while, due to the find() invocation above
          // test if it is all upper, and replace with all upper (if we have this set up in the regex itself - in config file)
          if (rp.getSameOutputCase() && allUpper && m.group().toUpperCase().equals(m.group())) {
            m.appendReplacement(sb, rp.executeString(env).toUpperCase());
          } else {
            m.appendReplacement(sb, rp.executeString(env));
          }
        } while (m.find());
        m.appendTail(sb);


        if (!preparedEffects.contains(rp)) {

View Full Code Here

        }
        final StringBuffer b = new StringBuffer();
        final Matcher m = varPattern.matcher(line);
        while(m.find()) {
            if (m.start() > 0 && line.charAt(m.start() - 1) != ESCAPE) {
                m.appendReplacement(b, Matcher.quoteReplacement(getValue(m.group(1))));
            } else {
                m.appendReplacement(b, m.group().substring(1));
            }
        }
        m.appendTail(b);

View Full Code Here

        final Matcher m = varPattern.matcher(line);
        while(m.find()) {
            if (m.start() > 0 && line.charAt(m.start() - 1) != ESCAPE) {
                m.appendReplacement(b, Matcher.quoteReplacement(getValue(m.group(1))));
            } else {
                m.appendReplacement(b, m.group().substring(1));
            }
        }
        m.appendTail(b);
        return b.toString();
    }

View Full Code Here

        Assert.hasLength(contentType, "'contentType' must not be empty");
        if (StringUtils.hasText(action)) {
            Matcher matcher = ACTION_PATTERN.matcher(contentType);
            if (matcher.find() && matcher.groupCount() == 1) {
                StringBuffer buffer = new StringBuffer();
                matcher.appendReplacement(buffer, "action=" + action);
                matcher.appendTail(buffer);
                return buffer.toString();
            }
            else {
                return contentType + "; action=" + action;

View Full Code Here


      // note: order matters
      replacement = replacement.replaceAll("\\\\", "\\\\\\\\");
      replacement = replacement.replaceAll("\\$", "\\\\\\$");


      matcher.appendReplacement(sb, replacement);
    }
    matcher.appendTail(sb);
    return sb.toString();
  }

View Full Code Here

        if(attr_name.contains("_")) {
            // Pattern p=Pattern.compile("_.");
            Matcher m=ATTR_NAME_TO_METHOD_NAME_PATTERN.matcher(attr_name);
            StringBuffer sb=new StringBuffer();
            while(m.find()) {
                m.appendReplacement(sb, attr_name.substring(m.end() - 1, m.end()).toUpperCase());
            }
            m.appendTail(sb);
            char first=sb.charAt(0);
            if(Character.isLowerCase(first)) {
                sb.setCharAt(0, Character.toUpperCase(first));

View Full Code Here

            if (asHtml) {
                insidePre = startPre(content, insidePre);
            }
            if (substText != null) {
                final StringBuffer substBuf = new StringBuffer();
                matcher.appendReplacement(substBuf, substText);
                // Remove prepended text between matches
                final String segment = substBuf.substring(matcher.start() - lastMatchEnd);
                appendMatchedSegment(content, segment, escapeHtml, matchedSegmentHtmlStyle);
            } else {
                appendMatchedSegment(content, matcher.group(), escapeHtml, matchedSegmentHtmlStyle);

View Full Code Here

            final StringBuffer sb = new StringBuffer();
            boolean matched = false;
            while (matcher.find()) {
                matched = true;
                if (substText != null) {
                    matcher.appendReplacement(sb, substText);
                } else {
                    break;
                }
            }
            if (matched) {

View Full Code Here

   */
  public static String toIRI(String uri) {
    StringBuffer decoded = new StringBuffer();
    Matcher matcher = percentEncoding.matcher(uri);
    while (matcher.find()) {
      matcher.appendReplacement(decoded, decode(matcher.group()));
    }
    matcher.appendTail(decoded);
    return decoded.toString();
  }
  private static final Pattern percentEncoding = Pattern.compile("(%[0-9a-fA-F][0-9a-fA-F])+");

View Full Code Here

        }
        // markdown link
        String name =  "\u261E " + m.group(1) ;
        String url = m.group(2);
        linkTargets.add(url);
        m.appendReplacement(sb, escapeReplacement(name));
        linkOffsets.add((sb.length() - name.length()) + 1);
        linkLengths.add(name.length());
      }
      else {
        // source location

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.