minix/commands/pkg_install/lib/str.c

106 lines
2.2 KiB
C

/* $NetBSD: str.c,v 1.26 2009/02/02 12:35:01 joerg Exp $ */
#if HAVE_CONFIG_H
#include "config.h"
#endif
#ifndef __minix
#include <nbcompat.h>
#endif
#if HAVE_SYS_CDEFS_H
#include <sys/cdefs.h>
#endif
#ifndef __minix
__RCSID("$NetBSD: str.c,v 1.26 2009/02/02 12:35:01 joerg Exp $");
#endif
/*
* FreeBSD install - a package for the installation and maintainance
* of non-core utilities.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Jordan K. Hubbard
* 18 July 1993
*
* Miscellaneous string utilities.
*
*/
#if HAVE_ASSERT_H
#include <assert.h>
#endif
#if HAVE_ERR_H
#include <err.h>
#endif
#if HAVE_FNMATCH_H
#include <fnmatch.h>
#endif
#include "lib.h"
#include "dewey.h"
/* pull in definitions and macros for resizing arrays as we go */
#include "defs.h"
/*
* Return the suffix portion of a path
*/
const char *
suffix_of(const char *str)
{
const char *dot;
return ((dot = strrchr(basename_of(str), '.')) == NULL) ? "" : dot + 1;
}
/*
* Return the filename portion of a path
*/
const char *
basename_of(const char *str)
{
const char *slash;
return ((slash = strrchr(str, '/')) == NULL) ? str : slash + 1;
}
/*
* Return the dirname portion of a path
*/
const char *
dirname_of(const char *path)
{
size_t cc;
char *s;
static char buf[MaxPathSize];
if ((s = strrchr(path, '/')) == NULL) {
return ".";
}
if (s == path) {
/* "/foo" -> return "/" */
return "/";
}
cc = (size_t) (s - path);
if (cc >= sizeof(buf))
errx(EXIT_FAILURE, "dirname_of: too long dirname: '%s'", path);
(void) memcpy(buf, path, cc);
buf[cc] = 0;
return buf;
}
/*
* Does the pkgname contain any of the special chars ("{[]?*<>")?
* If so, return 1, else 0
*/
int
ispkgpattern(const char *pkg)
{
return strpbrk(pkg, "<>[]?*{") != NULL;
}