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alphasort (3)

>> alphasort (3) ( FreeBSD man: Библиотечные вызовы )

alphasort (3) ( Русские man: Библиотечные вызовы )

alphasort (3) ( Linux man: Библиотечные вызовы )

BSD mandoc

NAME



scandir

 
alphasort

 - scan a directory

LIBRARY

Lb libc

SYNOPSIS

#include <sys/types.h>
#include <dirent.h>
int scandir (const char *dirname struct dirent ***namelist int \*(lp*select\*(rp\*(lpstruct dirent *\*(rp int \*(lp*compar\*(rp\*(lpconst void *, const void *\*(rp);
int alphasort (const void *d1 const void *d2);

DESCRIPTION

The scandir ();
function reads the directory Fa dirname and builds an array of pointers to directory entries using malloc(3). It returns the number of entries in the array. A pointer to the array of directory entries is stored in the location referenced by Fa namelist .

The Fa select argument is a pointer to a user supplied subroutine which is called by scandir ();
to select which entries are to be included in the array. The select routine is passed a pointer to a directory entry and should return a non-zero value if the directory entry is to be included in the array. If Fa select is null, then all the directory entries will be included.

The Fa compar argument is a pointer to a user supplied subroutine which is passed to qsort(3) to sort the completed array. If this pointer is null, the array is not sorted.

The alphasort ();
function is a routine which can be used for the Fa compar argument to sort the array alphabetically.

The memory allocated for the array can be deallocated with free(3), by freeing each pointer in the array and then the array itself.