public override int ReadChar()
{
int character;
if (Pushed)
{
Pushed = false;
character = Character;
if (character == '\n')
{
CursorColumn = 1;
CursorLine++;
return(character);
}
CursorColumn++;
return(character);
}
LastColumn = CursorColumn;
if (Tabs > 0)
{
CursorColumn++;
Tabs--;
return(' ');
}
for (;;)
{
character = ReadCharFromStream();
if (character < 0)
{
return(END_OF_STREAM);
}
if (character == '\n')
{
CursorColumn = 1;
CursorLine++;
break;
}
if (character == '\r')
{
character = ReadCharFromStream();
if (character != '\n')
{
UngetChar(character);
character = '\n';
}
CursorColumn = 1;
CursorLine++;
break;
}
if (character == '\t')
{
Tabs = TabSize - ((CursorColumn - 1) % TabSize) - 1;
CursorColumn++;
character = ' ';
break;
}
/* strip control characters, except for Esc */
if (character == '\x001B')
{
break;
}
if (0 < character && character < 32)
{
continue;
}
/* watch out for IS02022 */
if (Encoding == CharEncoding.Raw || Encoding == CharEncoding.Iso2022)
{
CursorColumn++;
break;
}
if (Encoding == CharEncoding.MacroMan)
{
character = Mac2Unicode[character];
}
/* produced e.g. as a side-effect of smart quotes in Word */
if (127 < character && character < 160)
{
Report.EncodingError((Lexer)Lexer, Report.WINDOWS_CHARS, character);
character = Win2Unicode[character - 128];
if (character == 0)
{
continue;
}
}
CursorColumn++;
break;
}
return(character);
}