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| <h4 class="subsection">14.2.7 Simple Program to List a Directory, Mark II</h4> |
| |
| <p>Here is a revised version of the directory lister found above |
| (see <a href="Simple-Directory-Lister.html#Simple-Directory-Lister">Simple Directory Lister</a>). Using the <code>scandir</code> function we |
| can avoid the functions which work directly with the directory contents. |
| After the call the returned entries are available for direct use. |
| |
| <pre class="smallexample"> #include <stdio.h> |
| #include <dirent.h> |
| |
| static int |
| one (const struct dirent *unused) |
| { |
| return 1; |
| } |
| |
| int |
| main (void) |
| { |
| struct dirent **eps; |
| int n; |
| |
| n = scandir ("./", &eps, one, alphasort); |
| if (n >= 0) |
| { |
| int cnt; |
| for (cnt = 0; cnt < n; ++cnt) |
| puts (eps[cnt]->d_name); |
| } |
| else |
| perror ("Couldn't open the directory"); |
| |
| return 0; |
| } |
| </pre> |
| <p>Note the simple selector function in this example. Since we want to see |
| all directory entries we always return <code>1</code>. |
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