This is scandir.c in view mode; [Download] [Up]
#ifndef lint
static char *sccsid = "@(#)$Header: scandir.c,v 1.6 91/02/08 18:22:07 sob Exp $";
#endif
#include "common.h"
/*
* scan_dir -- scan the current directory for news articles,
* loading the article numbers into art_array. Return
* number of articles loaded.
*
* Parameters: "low_msg", "high_msg" are the low
* and high messages numbers in this
* group; we ignore numbers outside this
* range.
*
* Returns: Number of articles loaded into
* array.
*
* Side effects: Changes "art_array".
*/
extern int intcmp();
extern char *malloc(), *realloc();
scan_dir(low_msg, high_msg)
int low_msg, high_msg;
{
register struct direct *dirent;
register DIR *dirp;
int artnum;
num_arts = 0;
dirp = opendir(".");
if (dirp == NULL)
return (0);
while ((dirent = readdir(dirp)) != NULL) {
artnum = atoi(dirent->d_name);
#ifdef DYNAMIC_ART_ARRAY
if (artnum == 0 || artnum < low_msg || artnum > high_msg)
continue;
/* Expand/allocate art_array elements as necessary */
if (num_arts + 1 >= size_art_array) {
size_art_array += 1024;
if (art_array) {
#ifdef SYSLOG
syslog(LOG_INFO,
"increasing art_array to %d elements",
size_art_array);
#endif
art_array = (int *)realloc(art_array,
size_art_array * sizeof(*art_array));
} else
art_array = (int *)
malloc(size_art_array * sizeof(*art_array));
if (art_array == 0) {
#ifdef SYSLOG
syslog(LOG_ERR,
"scan_dir(): malloc/realloc failed");
#endif
num_arts = 0;
size_art_array = 0;
size_art_array = 0;
closedir(dirp);
return(0);
}
}
art_array[num_arts] = artnum;
++num_arts;
#else
if (artnum != 0 && artnum >= low_msg && artnum <= high_msg)
art_array[num_arts++] = artnum;
#endif
}
closedir(dirp);
qsort((char *) art_array, num_arts, sizeof(int), intcmp);
return (num_arts);
}
/*
* intcmp -- compare to integers.
*
* Parameters: "x", "y" point to the integers to be compared.
*
* Returns: -1 if "x" is less than "y",
* 0 if "x" equals "y", and
* 1 if "x" is greater than "y".
*
* Side effects: None.
*/
intcmp(x, y)
register int *x, *y;
{
return (*x - *y);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.