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RSyntaxTextArea is the syntax highlighting text editor for Swing applications. Features include syntax highlighting for 40+ languages, code folding, code completion, regex find and replace, macros, code templates, undo/redo, line numbering and bracket matching.
/*
* 06/30/2013
*
* HtaccessTokenMaker.java - Token generator for .htaccess files.
*
* This library is distributed under a modified BSD license. See the included
* LICENSE file for details.
*/
package org.fife.ui.rsyntaxtextarea.modes;
import java.io.*;
import javax.swing.text.Segment;
import org.fife.ui.rsyntaxtextarea.*;
/**
* Scanner for .htaccess files.
*
* This implementation was created using
* JFlex 1.4.1; however, the generated file
* was modified for performance. Memory allocation needs to be almost
* completely removed to be competitive with the handwritten lexers (subclasses
* of AbstractTokenMaker), so this class has been modified so that
* Strings are never allocated (via yytext()), and the scanner never has to
* worry about refilling its buffer (needlessly copying chars around).
* We can achieve this because RText always scans exactly 1 line of tokens at a
* time, and hands the scanner this line as an array of characters (a Segment
* really). Since tokens contain pointers to char arrays instead of Strings
* holding their contents, there is no need for allocating new memory for
* Strings.
*
* The actual algorithm generated for scanning has, of course, not been
* modified.
*
* If you wish to regenerate this file yourself, keep in mind the following:
*
* - The generated
HtaccessTokenMaker.java file will contain two
* definitions of both zzRefill and yyreset.
* You should hand-delete the second of each definition (the ones
* generated by the lexer), as these generated methods modify the input
* buffer, which we'll never have to do.
* - You should also change the declaration/definition of zzBuffer to NOT
* be initialized. This is a needless memory allocation for us since we
* will be pointing the array somewhere else anyway.
* - You should NOT call
yylex() on the generated scanner
* directly; rather, you should use getTokenList as you would
* with any other TokenMaker instance.
*
*
* @author Robert Futrell
* @version 0.7
*
*/
%%
%public
%class HtaccessTokenMaker
%extends AbstractJFlexTokenMaker
%unicode
%ignorecase
%type org.fife.ui.rsyntaxtextarea.Token
%{
/**
* Type specific to HtaccessTokenMaker denoting a line ending with an
* unclosed double-quote attribute.
*/
public static final int INTERNAL_ATTR_DOUBLE = -1;
/**
* Type specific to HtaccessTokenMaker denoting a line ending with an
* unclosed single-quote attribute.
*/
public static final int INTERNAL_ATTR_SINGLE = -2;
/**
* Token type specific to HtaccessTokenMaker denoting a line ending with an
* unclosed XML tag; thus a new line is beginning still inside of the tag.
*/
public static final int INTERNAL_INTAG = -3;
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public HtaccessTokenMaker() {
}
/**
* Adds the token specified to the current linked list of tokens as an
* "end token;" that is, at zzMarkedPos.
*
* @param tokenType The token's type.
*/
private void addEndToken(int tokenType) {
addToken(zzMarkedPos,zzMarkedPos, tokenType);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
* @see #addToken(int, int, int)
*/
private void addHyperlinkToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start,end, tokenType, so, true);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
*/
private void addToken(int tokenType) {
addToken(zzStartRead, zzMarkedPos-1, tokenType);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
*/
private void addToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start,end, tokenType, so);
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param array The character array.
* @param start The starting offset in the array.
* @param end The ending offset in the array.
* @param tokenType The token's type.
* @param startOffset The offset in the document at which this token
* occurs.
*/
@Override
public void addToken(char[] array, int start, int end, int tokenType, int startOffset) {
super.addToken(array, start,end, tokenType, startOffset);
zzStartRead = zzMarkedPos;
}
/**
* Returns how to transform a line into a line comment.
*
* @return The line comment start and end text for .htaccess files.
*/
@Override
public String[] getLineCommentStartAndEnd(int languageIndex) {
return new String[] { "#", null };
}
/**
* Returns the first token in the linked list of tokens generated
* from text. This method must be implemented by
* subclasses so they can correctly implement syntax highlighting.
*
* @param text The text from which to get tokens.
* @param initialTokenType The token type we should start with.
* @param startOffset The offset into the document at which
* text starts.
* @return The first Token in a linked list representing
* the syntax highlighted text.
*/
public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
resetTokenList();
this.offsetShift = -text.offset + startOffset;
// Start off in the proper state.
int state = YYINITIAL;
switch (initialTokenType) {
case INTERNAL_ATTR_DOUBLE:
state = INATTR_DOUBLE;
break;
case INTERNAL_ATTR_SINGLE:
state = INATTR_SINGLE;
break;
case INTERNAL_INTAG:
state = INTAG;
break;
default:
state = YYINITIAL;
}
start = text.offset;
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
} catch (IOException ioe) {
ioe.printStackTrace();
return new TokenImpl();
}
}
/**
* Refills the input buffer.
*
* @return true if EOF was reached, otherwise
* false.
*/
private boolean zzRefill() {
return zzCurrentPos>=s.offset+s.count;
}
/**
* Resets the scanner to read from a new input stream.
* Does not close the old reader.
*
* All internal variables are reset, the old input stream
* cannot be reused (internal buffer is discarded and lost).
* Lexical state is set to YY_INITIAL.
*
* @param reader the new input stream
*/
public final void yyreset(Reader reader) {
// 's' has been updated.
zzBuffer = s.array;
/*
* We replaced the line below with the two below it because zzRefill
* no longer "refills" the buffer (since the way we do it, it's always
* "full" the first time through, since it points to the segment's
* array). So, we assign zzEndRead here.
*/
//zzStartRead = zzEndRead = s.offset;
zzStartRead = s.offset;
zzEndRead = zzStartRead + s.count - 1;
zzCurrentPos = zzMarkedPos = zzPushbackPos = s.offset;
zzLexicalState = YYINITIAL;
zzReader = reader;
zzAtBOL = true;
zzAtEOF = false;
}
%}
NameStartChar = ([\:A-Z_a-z])
NameChar = ({NameStartChar}|[\-\.0-9])
TagName = ({NameStartChar}{NameChar}*)
Whitespace = ([ \t\f]+)
Identifier = ([^ \t\n<#]+)
InTagIdentifier = ([^ \t\n\"\'=>]+)
LineCommentBegin = ("#")
AnyCharacterButDoubleQuoteOrBackSlash = ([^\\\"\n])
Escape = ("\\".)
StringLiteral = ([\"]({AnyCharacterButDoubleQuoteOrBackSlash}|{Escape})*[\"])
UnclosedStringLiteral = ([\"]([\\].|[^\\\"])*[^\"]?)
ErrorStringLiteral = ({UnclosedStringLiteral}[\"])
NameStartChar = ([\:A-Z_a-z])
NameChar = ({NameStartChar}|[\-\.0-9])
TagName = ({NameStartChar}{NameChar}*)
DirectiveStart = (("<"[/]?){TagName})
URLGenDelim = ([:\/\?#\[\]@])
URLSubDelim = ([\!\$&'\(\)\*\+,;=])
URLUnreserved = ([A-Za-z_0-9\-\.\~])
URLCharacter = ({URLGenDelim}|{URLSubDelim}|{URLUnreserved}|[%])
URLCharacters = ({URLCharacter}*)
URLEndCharacter = ([\/\$A-Za-z0-9])
URL = (((https?|f(tp|ile))"://"|"www.")({URLCharacters}{URLEndCharacter})?)
%state EOL_COMMENT
%state INTAG
%state INATTR_DOUBLE
%state INATTR_SINGLE
%%
{
{Whitespace} { addToken(Token.WHITESPACE); }
{LineCommentBegin} { start = zzMarkedPos-1; yybegin(EOL_COMMENT); }
"<"{TagName} {
int count = yylength();
addToken(zzStartRead,zzStartRead, Token.MARKUP_TAG_DELIMITER);
addToken(zzMarkedPos-(count-1), zzMarkedPos-1, Token.MARKUP_TAG_NAME);
yybegin(INTAG);
}
"> { addNullToken(); return firstToken; }
}
{
{InTagIdentifier} { addToken(Token.MARKUP_TAG_ATTRIBUTE); }
{Whitespace}+ { addToken(Token.WHITESPACE); }
"=" { addToken(Token.OPERATOR); }
">" { yybegin(YYINITIAL); addToken(Token.MARKUP_TAG_DELIMITER); }
[\"] { start = zzMarkedPos-1; yybegin(INATTR_DOUBLE); }
[\'] { start = zzMarkedPos-1; yybegin(INATTR_SINGLE); }
<> { addToken(start,zzStartRead-1, INTERNAL_INTAG); return firstToken; }
}
{
[^\"]* {}
[\"] { yybegin(INTAG); addToken(start,zzStartRead, Token.MARKUP_TAG_ATTRIBUTE_VALUE); }
<> { addToken(start,zzStartRead-1, Token.MARKUP_TAG_ATTRIBUTE_VALUE); addEndToken(INTERNAL_ATTR_DOUBLE); return firstToken; }
}
{
[^\']* {}
[\'] { yybegin(INTAG); addToken(start,zzStartRead, Token.MARKUP_TAG_ATTRIBUTE_VALUE); }
<> { addToken(start,zzStartRead-1, Token.MARKUP_TAG_ATTRIBUTE_VALUE); addEndToken(INTERNAL_ATTR_SINGLE); return firstToken; }
}
{
[^hwf\n]+ {}
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_EOL); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_EOL); start = zzMarkedPos; }
[hwf] {}
\n |
<> { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
}