xref: /netbsd-src/lib/libc/gen/fnmatch.3 (revision cda4f8f6ee55684e8d311b86c99ea59191e6b74f)
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4.\" This code is derived from software contributed to Berkeley by
5.\" Guido van Rossum.
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34.\"     from: @(#)fnmatch.3	5.4 (Berkeley) 6/28/92
35.\"	$Id: fnmatch.3,v 1.4 1993/07/30 08:35:54 mycroft Exp $
36.\"
37.Dd June 28, 1992
38.Dt FNMATCH 3
39.Os
40.Sh NAME
41.Nm fnmatch
42.Nd match filename or pathname
43.Sh SYNOPSIS
44.Fd #include <fnmatch.h>
45.Ft int
46.Fn fnmatch "const char *pattern" "const char *string" "int flags"
47.Sh DESCRIPTION
48The
49.Fn fnmatch
50function
51matches patterns according to the rules used by the shell.
52It checks the string specified by the
53.Fa string
54argument to see if it matches the pattern specified by the
55.Fa pattern
56argument.
57.Pp
58The
59.Fa flags
60argument modifies the interpretation of
61.Fa pattern
62and
63.Fa string .
64The value of
65.Fa flags
66is the bitwise inclusive
67.Tn OR
68of any of the following
69constants, which are defined in the include file
70.Pa fnmatch.h .
71.Bl -tag -width FNM_PATHNAME
72.It Dv FNM_NOESCAPE
73Normally, every occurrence of a backslash
74.Pq Ql \e
75followed by a character in
76.Fa pattern
77is replaced by that character.
78This is done to negate any special meaning for the character.
79If the
80.Dv FNM_NOESCAPE
81flag is set, a backslash character is treated as an ordinary character.
82.It Dv FNM_PATHNAME
83Slash characters in
84.Fa string
85must be explicitly matched by slashes in
86.Fa pattern .
87If this flag is not set, then slashes are treated as regular characters.
88.It Dv FNM_PERIOD
89Leading periods in strings match periods in patterns.
90The definition of ``leading'' is related to the specification of
91.Dv FNM_PATHNAME.
92A period is always ``leading'' if it is the first character in
93.Ar string .
94Additionally, if
95.Dv FNM_PATHNAME
96is set,
97a period is ``leading'' if it immediately follows a slash.
98.Em "This flag is not currently implemented."
99.El
100.Sh RETURN VALUES
101The
102.Fn fnmatch
103function returns zero if
104.Fa string
105matches the pattern specified by
106.Fa pattern ,
107otherwise, it returns the value
108.Dv FNM_NOMATCH .
109.Sh SEE ALSO
110.Xr sh 1 ,
111.Xr glob 3 ,
112.Xr wordexp 3 ,
113.Xr regexp 3
114.Sh HISTORY
115The
116.Fn fnmatch
117function is
118.Ud .
119.Sh BUGS
120Quotes and slashes in range patterns are not handled correctly by
121this implementation.
122.Pp
123The
124.Dv FNM_PERIOD
125flag is not implemented.
126.Pp
127The pattern
128.Ql *
129matches the empty string, even if
130.Dv FNM_PATHNAME
131is specified.
132