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1 perry 1 DIRNAME
2 !!!DIRNAME
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 EXAMPLE
7 RETURN VALUE
8 BUGS
9 CONFORMING TO
10 SEE ALSO
11 ----
12 !!NAME
13
14
15 dirname, basename - Parse pathname components
16 !!SYNOPSIS
17
18
19 __#include
20 __ ''*path''__);
21 char *basename(char__ ''*path''__);
22 __
23 !!DESCRIPTION
24
25
26 __dirname__ and __basename__ break a null-terminated
27 pathname string into directory and filename components. In
28 the usual case, __dirname__ returns the string up to, but
29 not including, the final '/', and __basename__ returns
30 the component following the final '/'. Trailing '/'
31 characters are not counted as part of the
32 pathname.
33
34
35 If ''path'' does not contain a slash, __dirname__
36 returns the string __basename__
37 returns a copy of ''path''. If ''path'' is the string
38 ''dirname__ and __basename__
39 return the string __path'' is a NULL
40 pointer or points to an empty string, then both
41 __dirname__ and __basename__ return the string
42 __
43
44
45 Concatenating the string returned by __dirname__, a
46 __basename__
47 yields a complete pathname.
48
49
50 Both __dirname__ and __basename__ may modify the
51 contents of ''path'', so if you need to preserve the
52 pathname string, copies should be passed to these functions.
53 Furthermore, __dirname__ and __basename__ may return
54 pointers to statically allocated memory which may
55 overwritten by subsequent calls.
56
57
58 The following list of examples (taken from SUSv2) shows the
59 strings returned by __dirname__ and __basename__ for
60 different paths:
61
62
63 __path dirname basename
64 __
65 __
66 !!EXAMPLE
67
68
69 char *dirc, *basec, *bname, *dname;
70 char *path =
71 !!RETURN VALUE
72
73
74 Both __dirname__ and __basename__ return pointers to
75 null-terminated strings.
76 !!BUGS
77
78
79 In versions of glibc up to and including 2.2.1,
80 __dirname__ does not correctly handle pathnames with
81 trailing '/' characters, and generates a segmentation
82 violation if given a NULL argument.
83 !!CONFORMING TO
84
85
86 SUSv2
87 !!SEE ALSO
88
89
90 dirname(1), basename(1),
91 ----
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