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package info.bliki.wiki.tags.code;
import java.util.HashMap;
/**
* Syntax highlighting support for ABAP source codes
*
*/
public class ABAPCodeFilter extends AbstractCodeFormatter {
private static HashMap KEYWORD_SET = new HashMap<>();
private static final String[] KEYWORDS = { "ADD", "ALL", "AND", "ANY", "ADD-CORRESPONDING", "APPEND", "APPENDING", "ASSIGN",
"ASSIGNED", "ASSIGNING", "AT", "AUTHORITY-CHECK", "BACK", "BEGIN", "BETWEEN", "BINARY", "BREAK-POINT", "BY", "CALL", "CASE",
"CHANGING", "CHECK", "CLEAR", "CLOSE", "CA", "CN", "CO", "CP", "CS", "CNT", "COLLECT", "COMMIT", "COMMUNICATION", "COMPUTE",
"CONCATENATE", "CONDENSE", "CONSTANTS", "CONTINUE", "CONTROLS", "CONVERT", "CORRESPONDING", "COUNT", "CUSTOMER-FUNCTION",
"CREATE", "CURRENCY", "CURSOR", "DATA", "DEFINE", "DELETE", "DESCRIBE", "DETAIL", "DIVIDE", "DIVIDE-CORRESPONDING", "DO",
"EDIT", "EDITOR-CALL", "ELSE", "ELSEIF", "END", "END-OF-DEFINITION", "END-OF-PAGE", "END-OF-SELECTION", "ENDAT", "ENDCASE",
"ENDDO", "ENDEXEC", "ENDFORM", "ENDFUNCTION", "ENDIF", "ENDIFEND", "ENDLOOP", "ENDMODULE", "ENDON", "ENDPROVIDE",
"ENDSELECT", "ENDWHILE", "ENTRIES", "EQ", "EXCEPTIONS", "EXEC", "EXIT", "EXIT FROM STEP LOOP", "EXPORT", "EXPORTING",
"EXTRACT", "FETCH", "FIELD", "FIELD-GROUPS", "FIELD-SYMBOLS", "FIELDS", "FOR", "FORM", "FORMAT", "FREE", "FROM", "FUNCTION",
"FUNCTION-POOL", "GENERATE", "GET", "GE", "GT", "HIDE", "ID", "INITIAL", "IF", "IS", "IMPORT", "IMPORTING", "INCLUDE",
"INFOTYPES", "INPUT", "IN", "INITIALIZATION", "INPUT", "INSERT", "INTO", "KEY", "LE", "LEAVE", "LIKE", "LINE", "LOAD",
"LOCAL", "LOOP", "LT", "M", "MASK", "MEMORY", "METHOD", "MESSAGE", "MODIFY", "MODULE", "MOVE", "MOVE-CORRESPONDING",
"MULTIPLY", "MULTIPLY-CORRESPONDING", "NA", "NP", "NS", "NE", "NEW-LINE", "NEW-PAGE", "NEW-SECTION", "NO", "NOT", "O", "OF",
"ON", "OR", "OUTPUT", "OVERLAY", "PACK", "PARAMETER", "PARAMETERS", "PERFORM", "POSITION", "PRINT-CONTROL", "PROGRAM",
"PROVIDE", "PUT", "RAISE", "RANGES", "READ", "RECEIVE", "REF", "REFRESH", "REJECT", "REPLACE", "REPORT", "REQUESTED",
"RESERVE", "RESTORE", "ROLLBACK", "ROWS", "SCAN", "SCREEN", "SCROLL", "SEARCH", "SELECT", "SELECT-OPTIONS",
"SELECTION-SCREEN", "SEPARATED", "SET", "SHIFT", "SINGLE", "SKIP", "SORT", "SPACE", "SPLIT", "START-OF-SELECTION", "STATICS",
"STOP", "STRUCTURE", "SUBMIT", "SUBTRACT", "SUBTRACT-CORRESPONDING", "SUM", "SUMMARY", "SUPPRESS", "SYNTAX-CHECK",
"SYNTAX-TRACE", "TABLE", "TABLES", "TIMES", "TO", "TOP-OF-PAGE", "TRANSACTION", "TRANSFER", "TRANSLATE", "TRANSPORTING",
"TYPE", "TYPE-POOL", "TYPE-POOLS", "TYPES", "ULINE", "USING", "UNPACK", "UP", "UPDATE", "VALUE", "WHEN", "WHILE", "WINDOW",
"WAIT", "WHERE", "WITH", "WORK", "WRITE", "Z" };
private static HashMap OBJECT_SET = new HashMap<>();
static {
for (int i = 0; i < KEYWORDS.length; i++) {
createHashMap(KEYWORD_SET, KEYWORDS[i]);
}
}
public ABAPCodeFilter() {
}
/**
* @return Returns the KEYWORD_SET.
*/
@Override
public HashMap getKeywordSet() {
return KEYWORD_SET;
}
/**
* @return Returns the OBJECT_SET.
*/
@Override
public HashMap getObjectSet() {
return OBJECT_SET;
}
//
// public static void appendChar(StringBuilder result, char currentChar) {
// switch (currentChar) {
// case '\"': // special html escape character
// result.append(""");
// break;
// case '<': // special html escape character
// result.append("<");
// break;
// case '>': // special html escape character
// result.append(">");
// break;
// case '&': // special html escape character
// result.append("&");
// break;
// case '\'': // special html escape character
// result.append("'");
// break;
// default:
// result.append(currentChar);
// }
// }
//
// public static void createHashMap(HashMap map, String str) {
// map.put(str, AbstractCPPBasedCodeFilter.FONT_KEYWORD + str +
// AbstractCPPBasedCodeFilter.FONT_END);
// }
private int appendIdentifier(String input, int identStart, int currentPosition, HashMap keywords,
HashMap objectWords, StringBuilder result) {
String originalIdent = input.substring(identStart, --currentPosition);
String keywordIdent = originalIdent;
if (!isKeywordLowerCase()) {
keywordIdent = keywordIdent.toLowerCase();
}
String keywordValue = (String) keywords.get(keywordIdent);
if (keywordValue != null) {
result.append(keywordValue);
// } else if (objectWords != null && objectWords.contains(originalIdent))
// {
// result.append("");
// result.append(originalIdent);
// result.append("");
} 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 >= 'a' && currentChar <= 'z')) {
identStart = currentPosition - 1;
identFound = true;
// start of identifier ?
while ((currentChar >= 'a' && currentChar <= 'z') || (currentChar >= 'A' && currentChar <= 'Z') || currentChar == '-'
|| currentChar == '_') {
currentChar = source[currentPosition++];
}
currentPosition = appendIdentifier(input, identStart, currentPosition, keywordsSet, objectsSet, result);
identFound = false;
continue; // while loop
} else if (currentChar == '\'') { // strings
result.append(AbstractCPPBasedCodeFilter.FONT_STRINGS);
appendChar(result, currentChar);
while (currentPosition < input.length()) {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
if (currentChar == '\'') {
if (currentPosition < input.length() && source[currentPosition] != '\'') {
break;
} else {
appendChar(result, currentChar);
currentPosition++;
}
}
if (currentChar == '\n') {
break;
}
}
result.append(AbstractCPPBasedCodeFilter.FONT_END);
continue;
} else if (currentChar == '\n' && currentPosition < input.length() && source[currentPosition] == '*') {
// line comment
result.append(AbstractCPPBasedCodeFilter.FONT_COMMENT);
appendChar(result, currentChar);
appendChar(result, source[currentPosition++]);
while (currentPosition < input.length()) {
currentChar = source[currentPosition++];
appendChar(result, currentChar);
if (currentChar == '\n') {
currentPosition--;
break;
}
}
result.append(AbstractCPPBasedCodeFilter.FONT_END);
continue;
} else if (currentChar == '"' && currentPosition < input.length()) {
// line comment until \n
result.append(AbstractCPPBasedCodeFilter.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(AbstractCPPBasedCodeFilter.FONT_END);
continue;
}
appendChar(result, currentChar);
}
} catch (IndexOutOfBoundsException e) {
if (identFound) {
currentPosition = appendIdentifier(input, identStart, currentPosition, keywordsSet, null, result);
}
}
// result.append("");
return result.toString();
}
/**
* @return Returns the KEYWORD_MAP.
*/
public boolean isKeywordLowerCase() {
return true;
}
/**
*
*/
public boolean isPHPTag() {
return false;
}
}