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/*
* A test which demonstrates the use of opendir and related functions
* declared in dirent.h.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <dirent.h>
int
main (int argc, char* argv[])
{
int i;
struct dirent* de;
DIR* dir;
long lPos;
if (argc == 2)
{
printf ("Opening directory \"%s\"\n", argv[1]);
dir = opendir(argv[1]);
}
else
{
printf ("Opening \".\"\n");
dir = opendir(".");
}
if (!dir)
{
printf ("Directory open failed!\n");
if (errno)
{
printf ("Error : %s\n", strerror(errno));
}
return 1;
}
i = 0;
lPos = -1;
while (de = readdir (dir))
{
i++;
printf ("%d : \"%s\" (tell %ld)\n", i, de->d_name,
telldir(dir));
if (i == 3)
{
printf ("We will seek here later.\n");
lPos = telldir (dir);
}
}
printf ("Rewind directory.\n");
rewinddir (dir);
if (de = readdir (dir))
{
printf ("First entry : \"%s\"\n", de->d_name);
}
else
{
printf ("Empty directory.\n");
}
if (lPos != -1)
{
printf ("Seeking to fourth entry.\n");
seekdir (dir, lPos);
if (de = readdir (dir))
{
printf ("Fourth entry : \"%s\"\n", de->d_name);
}
else
{
printf ("No fourth entry.\n");
}
}
else
{
printf ("Seek position is past end of directory.\n");
}
printf ("Closing directory.\n");
closedir (dir);
}
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