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/*******************************************************************************
* *
* Viewmol *
* *
* S C A N D I R . C *
* *
* Copyright (c) Joerg-R. Hill, October 2003 *
* *
********************************************************************************
*
* $Id: scandir.c,v 1.3 2003/11/07 11:15:53 jrh Exp $
* $Log: scandir.c,v $
* Revision 1.3 2003/11/07 11:15:53 jrh
* Release 2.4
*
* Revision 1.2 2000/12/10 15:37:02 jrh
* Release 2.3
*
* Revision 1.1 1999/05/24 01:29:43 jrh
* Initial revision
*
*/
#include<dirent.h>
#include<stdlib.h>
#include<string.h>
#include<sys/types.h>
/* This function is only required for SunOS, all other supported OS
have this function in their system library */
int scandir(const char *dir, struct dirent ***namelist,
int (*select)(const struct dirent *),
int (*compar)(const struct dirent **, const struct dirent **))
{
DIR *d;
struct dirent *entry;
register int i=0;
size_t entrysize;
if ((d=opendir(dir)) == NULL)
return(-1);
*namelist=NULL;
while ((entry=readdir(d)) != NULL)
{
if (select == NULL || (select != NULL && (*select)(entry)))
{
*namelist=(struct dirent **)realloc((void *)(*namelist),
(size_t)((i+1)*sizeof(struct dirent *)));
if (*namelist == NULL) return(-1);
entrysize=sizeof(struct dirent)-sizeof(entry->d_name)+strlen(entry->d_name)+1;
(*namelist)[i]=(struct dirent *)malloc(entrysize);
if ((*namelist)[i] == NULL) return(-1);
memcpy((*namelist)[i], entry, entrysize);
i++;
}
}
if (closedir(d)) return(-1);
if (i == 0) return(-1);
if (compar != NULL)
qsort((void *)(*namelist), (size_t)i, sizeof(struct dirent *), compar);
return(i);
}
int alphasort(const struct dirent **a, const struct dirent **b)
{
return(strcmp((*a)->d_name, (*b)->d_name));
}
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