blob: 970793d07a1d72761159adca51d16859c7b72a29 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#ifndef DIR_ITERATOR_H
#define DIR_ITERATOR_H
#include "strbuf.h"
/*
* Iterate over a directory tree.
*
* Iterate over a directory tree, recursively, including paths of all
* types and hidden paths. Skip "." and ".." entries and don't follow
* symlinks except for the original path.
*
* Every time dir_iterator_advance() is called, update the members of
* the dir_iterator structure to reflect the next path in the
* iteration. The order that paths are iterated over within a
* directory is undefined, but directory paths are always iterated
* over before the subdirectory contents.
*
* A typical iteration looks like this:
*
* int ok;
* struct iterator *iter = dir_iterator_begin(path);
*
* while ((ok = dir_iterator_advance(iter)) == ITER_OK) {
* if (want_to_stop_iteration()) {
* ok = dir_iterator_abort(iter);
* break;
* }
*
* // Access information about the current path:
* if (S_ISDIR(iter->st.st_mode))
* printf("%s is a directory\n", iter->relative_path);
* }
*
* if (ok != ITER_DONE)
* handle_error();
*
* Callers are allowed to modify iter->path while they are working,
* but they must restore it to its original contents before calling
* dir_iterator_advance() again.
*/
struct dir_iterator {
/* The current path: */
struct strbuf path;
/*
* The current path relative to the starting path. This part
* of the path always uses "/" characters to separate path
* components:
*/
const char *relative_path;
/* The current basename: */
const char *basename;
/* The result of calling lstat() on path: */
struct stat st;
};
/*
* Start a directory iteration over path. Return a dir_iterator that
* holds the internal state of the iteration.
*
* The iteration includes all paths under path, not including path
* itself and not including "." or ".." entries.
*
* path is the starting directory. An internal copy will be made.
*/
struct dir_iterator *dir_iterator_begin(const char *path);
/*
* Advance the iterator to the first or next item and return ITER_OK.
* If the iteration is exhausted, free the dir_iterator and any
* resources associated with it and return ITER_DONE. On error, free
* dir_iterator and associated resources and return ITER_ERROR. It is
* a bug to use iterator or call this function again after it has
* returned ITER_DONE or ITER_ERROR.
*/
int dir_iterator_advance(struct dir_iterator *iterator);
/*
* End the iteration before it has been exhausted. Free the
* dir_iterator and any associated resources and return ITER_DONE. On
* error, free the dir_iterator and return ITER_ERROR.
*/
int dir_iterator_abort(struct dir_iterator *iterator);
#endif
|
