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