wncinf(3)

NAME

wn_cstream_filename, wn_set_cstream_filename, wn_col

umn_of_mark, wn_column_of_current_mark, wn_linenum_of_mark,

wn_linenum_of_current_mark - information about cstream

SYNOPSIS

#include <wn/wncstr.h>
char *wn_cstream_filename(stream)
wn_cstream stream;
wn_set_cstream_filename(stream,name)
wn_cstream stream;
char name[];
int wn_column_of_mark(stream,mark)
wn_cstream stream;
int mark;
int wn_column_of_current_mark(stream)
wn_cstream stream;
int wn_linenum_of_mark(stream,mark)
wn_cstream stream;
int mark;
int wn_linenum_of_current_mark(stream)
wn_cstream stream;

DESCRIPTION

These routines set and get various information about the

cstream stream. This information can be used to make helpful er

ror messages if a parse fails.

wn_cstream_filename returns the filename for stream previ

ously set by wn_set_cstream_filename. The default is NULL.

wn_column_of_mark returns the number of chars between the

closest previous linefeed and mark. A linefeed is assumed to ex

ist at beginning of stream (mark = -1).

wn_column_of_current_mark returns the number of chars be

tween the closest previous linefeed and the current mark. A

linefeed is assumed to exist at beginning of stream (mark = -1).

wn_linenum_of_mark returns the number of linefeeds between

mark and beginning of stream. Line numbers start at 1.

wn_linenum_of_current_mark returns the number of linefeeds

between the current mark and beginning of stream. Line numbers

start at 1.

SEE ALSO

wncstr

AUTHOR

Will Naylor

WNLIB August 23, 1998

WNCINF(3)