FNMATCH(3)

NAME
fnmatch - match filename or pathname

SYNOPSIS
#include <fnmatch.h>

int fnmatch (const char *pattern, const char *string, int flags);

DESCRIPTION
The fnmatch function matches patterns according to the rules used by the shell. It checks the string specified by the string argument to see if it matches the pattern specified by the pattern argument.

The flags argument modifies the interpretation of pattern and string. The value of flags is the bitwise inclusive OR of any of the following constants, which are defined in the include file <fnmatch.h>.

    FNM_NOESCAPE
        Normally, every occurrence of a backslash \ followed by a character in pattern is replaced by that character. This is done to negate any special meaning for the character. If the FNM_NOESCAPE flag is set, a backslash character is treated as an ordinary character.

    FNM_PATHNAME
        Slash characters in string must be explicitly matched by slashes in pattern. If this flag is not set, then slashes are treated as regular characters.

    FNM_PERIOD
        Leading periods in string must be explicitly matched by periods in pattern. If this flag is not set, then leading periods are treated as regular characters. The definition of ``leading'' is related to the specification of FNM_PATHNAME. A period is always ``leading'' if it is the first character in string. Additionally, if FNM_PATHNAME is set, a period is ``leading'' if it immediately follows a slash.

    FNM_CASEFOLD
        If this flag is set, then the filename matching will be case insensitive. This is an extension for GNO.

In the GNO implementation, any colon (:) characters appearing in pattern or string will be mapped to slash (/) characters before any match is attempted, unless either pattern or string contain both colons and slashes.

RETURN VALUES
The fnmatch function returns zero if string matches the pattern specified by pattern, otherwise, it returns the value FNM_NOMATCH.

BUGS
The pattern * matches the empty string, even if FNM_PATHNAME is specified.

This implementation of fnmatch uses recursion. While this is not strictly a bug, it is a serious limitation on the IIgs where stack space is at a premium.

STANDARDS
Other than the mapping of : characters to / characters, the fnmatch function conforms to POSIX 1003.2. The FNM_CASEFOLD flag is an extension to the standard.

HISTORY
The fnmatch function first appeared in 4.4BSD.

SEE ALSO
sh(1), glob(3), regex(3)