Function HL_Escape_html

src/Edit.c:6766–6979

void HL_Escape_html(HWND hwnd) {
	int beg, end , symb , res  ;
	BOOL changed;
	struct Sci_TextToFind ttf;
	const char* _source = "&<>";
	const char* _target[] = { "&amp;", "&lt;", "&gt;" };
	assert(strlen(_source) == COUNTOF(_target));
	//
	//
	SendMessage(hwnd, SCI_BEGINUNDOACTION, 0, 0);
	beg = SendMessage(hwnd, SCI_GETSELECTIONSTART, 0, 0);
	end = SendMessage(hwnd, SCI_GETSELECTIONEND, 0, 0);
	if (beg == end){
		beg = 0;
		end = SendMessage(hwnd, SCI_GETTEXTLENGTH, 0, 0);
	}
	//
	ttf.lpstrText = HL_Alloc(2);
	ttf.lpstrText[1] = '\0';
	changed = FALSE;
	for (symb = 0; symb < strlen(_source); ++symb)
	{
		ttf.chrg.cpMin = beg;
		ttf.chrg.cpMax = end;
		ttf.lpstrText[0] = _source[symb];
		//
		res = 0;
		while (-1 != res)
		{
			res = SendMessage(hwnd, SCI_FINDTEXT, 0, (LPARAM)&ttf);
			if (-1 != res){
#if 0
				if ('&' == _source[symb]){
#define _HL_LEN_TO_CHECK 5
					struct Sci_TextRange tr;
					int k;
					tr.chrg.cpMin = ttf.chrgText.cpMin;
					tr.chrg.cpMax = min(tr.chrg.cpMin + _HL_LEN_TO_CHECK, end);
					tr.lpstrText = HL_Alloc(tr.chrg.cpMax - tr.chrg.cpMin + 1);
					SendMessage(hwnd, SCI_GETTEXTRANGE, 0, (LPARAM)&tr);
					for (k = 0; k < COUNTOF(_target); ++k)
					{
						if (strstr(tr.lpstrText, _target[k])){
							res = -2;
							ttf.chrg.cpMin = ttf.chrgText.cpMax;
							break;
						}
					}
					//
					HL_Free(tr.lpstrText);
				}
				if (res >= 0){
#else
				{
#endif
					assert(ttf.chrgText.cpMax == ttf.chrgText.cpMin + 1);
					SendMessage(hwnd, SCI_DELETERANGE, ttf.chrgText.cpMin, 1);
					SendMessage(hwnd, SCI_INSERTTEXT, ttf.chrgText.cpMin, (LPARAM)_target[symb]);