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wx-scintilla/src/scintilla/src/LexTeX.cxx  view on Meta::CPAN

	return ((ch >= 'a') && (ch <= 'z')) || ((ch >= 'A') && (ch <= 'Z'));
}

static int ParseTeXCommand(unsigned int pos, Accessor &styler, char *command)
{
  int length=0;
  char ch=styler.SafeGetCharAt(pos+1);

  if(ch==',' || ch==':' || ch==';' || ch=='%'){
      command[0]=ch;
      command[1]=0;
	  return 1;
  }

  // find end
     while(isWordChar(ch) && !isNumber(ch) && ch!='_' && ch!='.' && length<100){
          command[length]=ch;
          length++;
          ch=styler.SafeGetCharAt(pos+length+1);
     }

  command[length]='\0';
  if(!length) return 0;
  return length+1;
}

static int classifyFoldPointTeXPaired(const char* s) {
	int lev=0;
	if (!(isdigit(s[0]) || (s[0] == '.'))){
		if (strcmp(s, "begin")==0||strcmp(s,"FoldStart")==0||
			strcmp(s,"abstract")==0||strcmp(s,"unprotect")==0||
			strcmp(s,"title")==0||strncmp(s,"start",5)==0||strncmp(s,"Start",5)==0||
			strcmp(s,"documentclass")==0||strncmp(s,"if",2)==0
			)
			lev=1;
		if (strcmp(s, "end")==0||strcmp(s,"FoldStop")==0||
			strcmp(s,"maketitle")==0||strcmp(s,"protect")==0||
			strncmp(s,"stop",4)==0||strncmp(s,"Stop",4)==0||
			strcmp(s,"fi")==0
			)
		lev=-1;
	}
	return lev;
}

static int classifyFoldPointTeXUnpaired(const char* s) {
	int lev=0;
	if (!(isdigit(s[0]) || (s[0] == '.'))){
		if (strcmp(s,"part")==0||
			strcmp(s,"chapter")==0||
			strcmp(s,"section")==0||
			strcmp(s,"subsection")==0||
			strcmp(s,"subsubsection")==0||
			strcmp(s,"CJKfamily")==0||
			strcmp(s,"appendix")==0||
			strcmp(s,"Topic")==0||strcmp(s,"topic")==0||
			strcmp(s,"subject")==0||strcmp(s,"subsubject")==0||
			strcmp(s,"def")==0||strcmp(s,"gdef")==0||strcmp(s,"edef")==0||
			strcmp(s,"xdef")==0||strcmp(s,"framed")==0||
			strcmp(s,"frame")==0||
			strcmp(s,"foilhead")==0||strcmp(s,"overlays")==0||strcmp(s,"slide")==0
			){
			    lev=1;
			}
	}
	return lev;
}

static bool IsTeXCommentLine(int line, Accessor &styler) {
	int pos = styler.LineStart(line);
	int eol_pos = styler.LineStart(line + 1) - 1;

	int startpos = pos;

	while (startpos<eol_pos){
		char ch = styler[startpos];
		if (ch!='%' && ch!=' ') return false;
		else if (ch=='%') return true;
		startpos++;
	}

	return false;
}

// FoldTeXDoc: borrowed from VisualTeX with modifications

static void FoldTexDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler)
{
	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	unsigned int endPos = startPos+length;
	int visibleChars=0;
	int lineCurrent=styler.GetLine(startPos);
	int levelPrev=styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	int levelCurrent=levelPrev;
	char chNext=styler[startPos];
	char buffer[100]="";

	for (unsigned int i=startPos; i < endPos; i++) {
		char ch=chNext;
		chNext=styler.SafeGetCharAt(i+1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');

        if(ch=='\\') {
            ParseTeXCommand(i, styler, buffer);
			levelCurrent += classifyFoldPointTeXPaired(buffer)+classifyFoldPointTeXUnpaired(buffer);
		}

		if (levelCurrent > SC_FOLDLEVELBASE && ((ch == '\r' || ch=='\n') && (chNext == '\\'))) {
            ParseTeXCommand(i+1, styler, buffer);
			levelCurrent -= classifyFoldPointTeXUnpaired(buffer);
		}

	char chNext2;
	char chNext3;
	char chNext4;
	char chNext5;
	chNext2=styler.SafeGetCharAt(i+2);
	chNext3=styler.SafeGetCharAt(i+3);
	chNext4=styler.SafeGetCharAt(i+4);
	chNext5=styler.SafeGetCharAt(i+5);