76 lines
1.9 KiB
Groff
76 lines
1.9 KiB
Groff
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. \" @(#)patmatch.3 1.2 00/11/12 Copyright 1985,1995 J. Schilling
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. \" Manual Seite fuer patmatch
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. \"
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.TH PATMATCH 3 "12. Nov 2000" "J\*org Schilling" "Schily\'s LIBRARY FUNCTIONS"
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.SH NAME
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patmatch() \- checks string for matches
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.SH SYNOPSIS
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.nf
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.B
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char *patmatch(pattern, aux, string, soff, slen, alt, state)
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.B char *pattern;
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.B int *aux;
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.B char *string;
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.B int soff;
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.B int slen;
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.B int alt;
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.B int state[];
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.fi
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.SH DESCRIPTION
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.B patmatch()
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uses the pattern matching information
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.IR pattern
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and in addition
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.IR aux " and " alt
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(previously set up by a call to
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.BR patcompile (3))
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to check string for a match. The length of the string is
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.I slen
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and the starting index used for matching is
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.IR soff .
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The string can also be terminated by a null byte.
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.PP
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The
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.I state
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array is set up and used internally by
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.B patmatch
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and should have at least
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.BI "strlen(" pattern ") + 1"
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elements.
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.SH RETURNS
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Returns a NULL pointer if the
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.I string
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starting at the specified offset did not match the
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.IR pattern .
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.PP
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Any non-NULL return is a pointer to the first character of
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.I string
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after the part that matches.
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.SH "SEE ALSO
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.BR patcompile (3)
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for information on
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.I aux
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and
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.IR alt .
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.PP
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And
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.BR match (1)
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for a description ot the regular expressions.
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.SH NOTES
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The pattern matching functions are based on ones presented by
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Martin Richards in "A Compact Function for Regular Expression
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Pattern Matching", Software-Practice and Experience vol 9,
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527-534 (1979).
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