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NAME
wnscan -- scan cstream for patterns
SYNOPSIS
#include "wncstr.h"
bool wn_scan_for_eos(stream)
wn_cstream stream;
bool wn_scan_for_char(stream,c)
wn_cstream stream;
char c;
bool wn_scan_for_char_type(stream,char_type)
wn_cstream stream;
char char_type[256];
bool wn_scan_for_not_char_type(stream,char_type)
wn_cstream stream;
char char_type[256];
bool wn_scan_for_literal(stream,literal)
wn_cstream stream;
char literal[];
DESCRIPTION
These routines scan "stream" for the indicated pattern. They
return TRUE and set the current mark to the beginning of the
pattern if successful. Otherwise, they return FALSE and leave
current mark unaltered.
"wn_scan_for_char_type" scans for a character c which satisfies
char_type[c] == TRUE. "wn_scan_for_char_type" returns FALSE if
such a char cannot be found.
"wn_scan_for_not_char_type" scans for a character c which satisfies
char_type[c] == FALSE. End of stream is considered to be a match,
so "wn_scan_for_not_char_type" always succeeds.
BUGS
More scan routines are needed.
Need routines to scan between 2 marks rather than between a mark
and end of stream.
Need routines to scan backward.
What about scan for regular expressions?
SEE ALSO
wncstr, wnptok, wnary
AUTHOR
Will Naylor
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