96 lines
1.6 KiB
C
96 lines
1.6 KiB
C
#include <string.h>
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#include "sys/dir.h"
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#include "sys/dirent.h"
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#include <errno.h>
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DIR *opendir(char *name)
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{
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int length;
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DIR *dir = (DIR *)malloc(sizeof(DIR));
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dir->num_read = 0;
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dir->name = (char *)malloc(strlen(name)+6);
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strcpy(dir->name, name);
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/* Append a "." if we got only the device name */
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if (dir->name[1] == ':' && strlen(dir->name) == 2)
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strcat(dir->name, ".");
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/* Strip trailing slashes, so we can append "/*.*" */
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while (1)
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{
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length = strlen(dir->name);
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if (length == 0) break;
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if (dir->name[length - 1] == '/' ||
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dir->name[length - 1] == '\\')
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dir->name[length - 1] = '\0';
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else
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break;
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}
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strcat(dir->name, "/*.*");
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return dir;
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}
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static char *strlwr(char *s)
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{
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char *p = s;
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while (*s)
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{
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if ((*s >= 'A') && (*s <= 'Z'))
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*s += 'a'-'A';
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s++;
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}
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return p;
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}
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struct dirent *readdir(DIR *dir)
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{
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int done;
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int oerrno = errno;
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if (dir->num_read)
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done = findnext(&dir->ff);
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else
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done = findfirst(dir->name, &dir->ff,
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FA_ARCH|FA_RDONLY|FA_DIREC|FA_HIDDEN|FA_SYSTEM);
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if (done)
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{
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if (errno == ENMFILE)
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errno = oerrno;
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return 0;
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}
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dir->num_read ++;
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dir->de.d_namlen = strlen(dir->ff.ff_name);
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strcpy(dir->de.d_name,dir->ff.ff_name);
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strlwr(dir->de.d_name);
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return &dir->de;
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}
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long telldir(DIR *dir)
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{
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return dir->num_read;
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}
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void seekdir(DIR *dir, long loc)
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{
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int i;
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rewinddir(dir);
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for (i=0; i<loc; i++)
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readdir(dir);
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}
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void rewinddir(DIR *dir)
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{
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dir->num_read = 0;
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}
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int closedir(DIR *dir)
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{
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free(dir->name);
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free(dir);
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return 0;
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}
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