/*
	rtfindent - indent RTF file

	Useful for revealing nesting structure of RTF documents.
	Also makes them somewhat more readable.

	The output is legal RTF but will not format exactly as the input.
	The extra newlines that are introduced might not make a difference,
	but the extra spaces used to effect indenting levels would.

	28 Jan 91	Paul DuBois	dubois@primate.wisc.edu

	28 Jan 90 V1.0. Created.
	28 Feb 91 V1.01. Updated for distribution 1.05.
*/

# include	<stdio.h>


int	indLevel = 0;
int	indAmt = 2;
int	c;
int	nChars = 0;
int	escNext = 0;


int main (argc, argv)
int	argc;
char	**argv;
{
	/* not clever; only allows stdin or one named file to be read */

	if (argc > 1)
	{
		if (freopen (argv[1], "r", stdin) == NULL)
		{
			fprintf (stderr, "Can't open \"%s\"\n", argv[1]);
			exit (1);
		}
	}

	while ((c = getchar ()) != EOF)
	{
		if (escNext)
		{
			escNext = 0;
			Put (c);
			continue;
		}
		if (c == '\\')	/* this would be wrong for a general reader */
		{
			escNext = 1;
			Put (c);
			continue;
		}
		if (c == '{')
		{
			Flush ();
			Put (c);
			Flush ();
			++indLevel;
		}
		else if (c == '}')
		{
			Flush ();
			--indLevel;
			Put (c);
			Flush ();
		}
		else if (c == '\r')
		{
			Put ('\n');
			Flush ();
		}
		else
			Put (c);
	}
	Flush ();
}


Flush ()
{
	if (nChars > 0)
	{
		Put ('\n');
		nChars = 0;
	}
}


Put (c)
int	c;
{
int	i, j;
	if (nChars == 0)	/* beginning of line, dump out indent */
	{
		for (i = 0; i < indLevel; i++)
		{
			for (j = 0; j < indAmt; j++)
			{
				putchar (' ');
				++nChars;
			}
		}
	}
	putchar (c);
	++nChars;
}