package net.sourceforge.cobertura.reporting.html;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
public class JavaToHtml {
public abstract static class State {
public final static int = 0;
public final static int = 1;
public final static int = 2;
public final static int DEFAULT = 3;
public final static int KEYWORD = 4;
public final static int IMPORT_NAME = 5;
public final static int PACKAGE_NAME = 6;
public final static int QUOTE_DOUBLE = 8;
public final static int QUOTE_SINGLE = 9;
}
private static final Collection javaKeywords;
private static final Collection javaPrimitiveLiterals;
private static final Collection javaPrimitiveTypes;
static {
final String[] javaKeywordsArray = {"abstract", "assert", "break",
"case", "catch", "class", "const", "continue", "default", "do",
"else", "extends", "final", "finally", "for", "goto", "if",
"interface", "implements", "import", "instanceof", "native",
"new", "package", "private", "protected", "public", "return",
"static", "strictfp", "super", "switch", "synchronized",
"this", "throw", "throws", "transient", "try", "volatile",
"while"};
final String javaPrimitiveTypesArray[] = {"boolean", "byte", "char",
"double", "float", "int", "long", "short", "void"};
final String javaPrimitiveLiteralsArray[] = {"false", "null", "true"};
javaKeywords = new HashSet(Arrays.asList(javaKeywordsArray));
javaPrimitiveTypes = new HashSet(Arrays.asList(javaPrimitiveTypesArray));
javaPrimitiveLiterals = new HashSet(Arrays
.asList(javaPrimitiveLiteralsArray));
}
private int state = State.DEFAULT;
private static String escapeEntity(final char character) {
if (character == '&')
return "&";
else if (character == '<')
return "<";
else if (character == '>')
return ">";
else if (character == '\t')
return " ";
else
return new Character(character).toString();
}
public String process(final String text) {
if (text == null)
throw new IllegalArgumentException("\"text\" can not be null.");
StringBuffer ret = new StringBuffer();
int begin, end, nextCR;
begin = 0;
end = text.indexOf('\n', begin);
nextCR = text.indexOf('\r', begin);
if ((nextCR != -1) && ((end == -1) || (nextCR < end)))
end = nextCR;
while (end != -1) {
ret.append(processLine(text.substring(begin, end)) + "<br/>");
if ((end + 1 < text.length())
&& ((text.charAt(end + 1) == '\n') || (text.charAt(end + 1) == '\r'))) {
ret.append(text.substring(end, end + 1));
begin = end + 2;
} else {
ret.append(text.charAt(end));
begin = end + 1;
}
end = text.indexOf('\n', begin);
nextCR = text.indexOf('\r', begin);
if ((nextCR != -1) && ((end == -1) || (nextCR < end)))
end = nextCR;
}
ret.append(processLine(text.substring(begin)));
return ret.toString();
}
private String processLine(final String line) {
if (line == null)
throw new IllegalArgumentException("\"line\" can not be null.");
if ((line.indexOf('\n') != -1) || (line.indexOf('\r') != -1))
throw new IllegalArgumentException(
"\"line\" can not contain newline or carriage return characters.");
StringBuffer ret = new StringBuffer();
int currentIndex = 0;
while (currentIndex != line.length()) {
if (state == State.DEFAULT) {
if ((currentIndex + 2 < line.length())
&& line.substring(currentIndex, currentIndex + 3)
.equals("/**")) {
state = State.COMMENT_JAVADOC;
} else if ((currentIndex + 1 < line.length())
&& line.substring(currentIndex, currentIndex + 2)
.equals("/*")) {
state = State.COMMENT_MULTI;
} else if ((currentIndex + 1 < line.length())
&& (line.substring(currentIndex, currentIndex + 2)
.equals("//"))) {
state = State.COMMENT_SINGLE;
} else if (Character.isJavaIdentifierStart(line
.charAt(currentIndex))) {
state = State.KEYWORD;
} else if (line.charAt(currentIndex) == '\'') {
state = State.QUOTE_SINGLE;
} else if (line.charAt(currentIndex) == '"') {
state = State.QUOTE_DOUBLE;
} else {
ret.append(escapeEntity(line.charAt(currentIndex++)));
}
}
else if ((state == State.COMMENT_MULTI)
|| (state == State.COMMENT_JAVADOC)) {
ret.append("<span class=\"comment\">");
while ((currentIndex != line.length())
&& !((currentIndex + 1 < line.length()) && (line
.substring(currentIndex, currentIndex + 2)
.equals("*/")))) {
ret.append(escapeEntity(line.charAt(currentIndex++)));
}
if (currentIndex == line.length()) {
ret.append("</span>");
} else {
ret.append("*/</span>");
state = State.DEFAULT;
currentIndex += 2;
}
}
else if (state == State.COMMENT_SINGLE) {
ret.append("<span class=\"comment\">");
while (currentIndex != line.length()) {
ret.append(escapeEntity(line.charAt(currentIndex++)));
}
ret.append("</span>");
state = State.DEFAULT;
}
else if (state == State.KEYWORD) {
StringBuffer tmp = new StringBuffer();
do {
tmp.append(line.charAt(currentIndex++));
} while ((currentIndex != line.length())
&& (Character.isJavaIdentifierPart(line
.charAt(currentIndex))));
if (javaKeywords.contains(tmp.toString()))
ret.append("<span class=\"keyword\">" + tmp + "</span>");
else if (javaPrimitiveLiterals.contains(tmp.toString()))
ret.append("<span class=\"keyword\">" + tmp + "</span>");
else if (javaPrimitiveTypes.contains(tmp.toString()))
ret.append("<span class=\"keyword\">" + tmp + "</span>");
else
ret.append(tmp);
if (tmp.toString().equals("import"))
state = State.IMPORT_NAME;
else if (tmp.toString().equals("package"))
state = State.PACKAGE_NAME;
else
state = State.DEFAULT;
}
else if (state == State.IMPORT_NAME) {
ret.append(escapeEntity(line.charAt(currentIndex++)));
state = State.DEFAULT;
}
else if (state == State.PACKAGE_NAME) {
ret.append(escapeEntity(line.charAt(currentIndex++)));
state = State.DEFAULT;
}
else if (state == State.QUOTE_DOUBLE) {
ret.append("<span class=\"string\">");
do {
ret.append(escapeEntity(line.charAt(currentIndex++)));
} while ((currentIndex != line.length())
&& (!(line.charAt(currentIndex) == '"') || ((line
.charAt(currentIndex - 1) == '\\') && (line
.charAt(currentIndex - 2) != '\\'))));
if (currentIndex == line.length()) {
ret.append("</span>");
} else {
ret.append("\"</span>");
state = State.DEFAULT;
currentIndex++;
}
}
else if (state == State.QUOTE_SINGLE) {
ret.append("<span class=\"string\">");
do {
ret.append(escapeEntity(line.charAt(currentIndex++)));
} while ((currentIndex != line.length())
&& (!(line.charAt(currentIndex) == '\'') || ((line
.charAt(currentIndex - 1) == '\\') && (line
.charAt(currentIndex - 2) != '\\'))));
if (currentIndex == line.length()) {
ret.append("</span>");
} else {
ret.append("\'</span>");
state = State.DEFAULT;
currentIndex++;
}
}
else {
ret.append(escapeEntity(line.charAt(currentIndex++)));
}
}
return ret.toString();
}
public void reset() {
state = State.DEFAULT;
}
}