1for_each_file_ex(3) Allegro manual for_each_file_ex(3)
2
6 for_each_file_ex - Executes callback() for each file matching a wild‐
7 card. Allegro game programming library.
8
10 #include <allegro.h>
11 int for_each_file_ex(const char *name, int in_attrib, int out_attrib,
14 int (*callback)(const char *filename, int attrib, void *param), void
15 *param);
16
18 Finds all the files on disk which match the given wildcard specifica‐
19 tion and file attributes, and executes callback() once for each. Basi‐
20 cally, this is a convenient wrapper around al_findfirst(), al_find‐
21 next() and al_findclose(). `in_attrib' is a bitmask specifying the
22 attributes the files must carry, `out_attrib' is a bitmask specifying
23 the attributes the files must not carry; attributes which are not spec‐
24 ified in either bitmasks are not taken into account for deciding
25 whether callback() is invoked or not.
26 The callback function will be passed three arguments: the first is a
28 string which contains the completed filename (exactly the same string
29 you passed to for_each_file_ex() but with meta characters), the second
30 is the actual attributes of the file, and the third is a void pointer
31 which is simply a copy of `param' (you can use this for whatever you
32 like). The callback must return zero to let the enumeration proceed, or
33 any non-zero value to stop it. If an error occurs, the error code will
34 be stored in `errno' but the enumeration won't stop. Example:
35 int show_name(const char *filename, int attrib, void *param)
37 {
38 allegro_message("Caught `%s', attribs %d\n",
39 filename, attrib);
40 return 0;
41 }
42 ...
43 count = for_each_file_ex("data/level*", FA_DIREC,
44 0, show_name, 0);
45 allegro_message("%d game directories\n", count);
46
48 Returns the number of successful calls made to callback(), that is, the
49 number of times callback() was called and returned 0.
50
53 al_findfirst(3), al_findnext(3), al_findclose(3)
54Allegro version 4.2.2 for_each_file_ex(3)