info.bliki.wiki.tags.code.AbstractCPPBasedCodeFilter Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of bliki-core Show documentation
Show all versions of bliki-core Show documentation
This is the core project.
The newest version!
package info.bliki.wiki.tags.code;
import java.util.HashMap;
/**
* Syntax highlighting support for C++ based source codes
*
*/
abstract public class AbstractCPPBasedCodeFilter extends AbstractCodeFormatter {
public AbstractCPPBasedCodeFilter() {
}
protected int appendIdentifier(String input, int identifierStart, int currentPosition, HashMap keyWords,
HashMap objectWords, StringBuilder result) {
String originalIdent = input.substring(identifierStart, --currentPosition);
String keywordIdent = originalIdent;
if (!isKeywordCaseSensitive()) {
keywordIdent = keywordIdent.toLowerCase();
}
String keywordValue = keyWords.get(keywordIdent);
if (keywordValue != null) {
result.append(keywordValue);
} else {
if (objectWords == null) {
result.append(originalIdent);
return currentPosition;
}
String objectValue = objectWords.get(keywordIdent);
if (objectValue != null) {
result.append(objectValue);
} else {
result.append(originalIdent);
}
}
return currentPosition;
}
@Override
public String filter(String input) {
char[] source = input.toCharArray();
int currentPosition = 0;
int identStart = 0;
char currentChar = ' ';
HashMap keywordsSet = getKeywordSet();
HashMap objectsSet = getObjectSet();
StringBuilder result = new StringBuilder(input.length() + input.length() / 4);
boolean identFound = false;
// result.append("");
try {
while (true) {
currentChar = source[currentPosition++];
if ((currentChar >= 'A' && currentChar <= 'Z') || (currentChar == '_') || (currentChar >= 'a' && currentChar <= 'z')) {
identStart = currentPosition - 1;
identFound = true;
// start of identifier ?
while ((currentChar >= 'a' && currentChar <= 'z') || (currentChar >= 'A' && currentChar <= 'Z') || currentChar == '_') {
currentChar = source[currentPosition++];
}
currentPosition = appendIdentifier(input, identStart, currentPosition, keywordsSet, objectsSet, result);
identFound = false;
continue; // while loop
} else if (currentChar == '\"') { // strings
result.append(FONT_STRINGS);
appendChar(result, currentChar);
while (currentPosition < input.length()) {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
if (currentChar == '\\') {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
continue;
}
if (currentChar == '\"') {
break;
}
}
result.append(FONT_END);
continue;
} else if (currentChar == '\'') { // characters
result.append(FONT_STRINGS);
appendChar(result, currentChar);
while (currentPosition < input.length()) {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
if (currentChar == '\\') {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
continue;
}
if (currentChar == '\'') {
break;
}
}
result.append(FONT_END);
continue;
} else if (currentChar == '/' && currentPosition < input.length() && source[currentPosition] == '/') {
// line comment
result.append(FONT_COMMENT);
appendChar(result, currentChar);
appendChar(result, source[currentPosition++]);
while (currentPosition < input.length()) {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
if (currentChar == '\n') {
break;
}
}
result.append(FONT_END);
continue;
} else if (currentChar == '/' && currentPosition < input.length() && source[currentPosition] == '*') {
if (currentPosition < (input.length() - 1) && source[currentPosition + 1] == '*') {
// javadoc style
result.append(FONT_JAVADOC);
} else {
// multiline comment
result.append(FONT_COMMENT);
}
appendChar(result, currentChar);
appendChar(result, source[currentPosition++]);
while (currentPosition < input.length()) {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
if (currentChar == '/' && source[currentPosition - 2] == '*') {
break;
}
}
result.append(FONT_END);
continue;
} else if (currentChar == '<' && isPHPTag() && currentPosition + 3 < input.length() && source[currentPosition] == '?'
&& source[currentPosition + 1] == 'p' && source[currentPosition + 2] == 'h' && source[currentPosition + 3] == 'p') {
// php start tag
currentPosition += 4;
result.append(FONT_KEYWORD + "<?php" + FONT_END);
continue;
} else if (currentChar == '?' && isPHPTag() && currentPosition < input.length() && source[currentPosition] == '>') {
// php start tag
currentPosition++;
result.append(FONT_KEYWORD + "?>" + FONT_END);
continue;
}
appendChar(result, currentChar);
}
} catch (IndexOutOfBoundsException e) {
if (identFound) {
currentPosition = appendIdentifier(input, identStart, currentPosition, keywordsSet, null, result);
}
}
// result.append(FONT_END);
return result.toString();
}
/**
* Test if the keywords are case sensitive. Returns true by
* default.
*
* @return true if the keywords are case sensitive
*/
public boolean isKeywordCaseSensitive() {
return true;
}
/**
*
*/
public boolean isPHPTag() {
return false;
}
}