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/*
* "$Id: numericsort.c,v 1.6 1998/10/21 14:21:10 mike Exp $"
*
* Numeric sorting routine for the Fast Light Tool Kit (FLTK).
*
* Copyright 1998 by Bill Spitzak and others.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "fltk-bugs@easysw.com".
*/
/* My own scandir sorting function, useful for the film industry where
we have many files with numbers in their names: */
#include <config.h>
#include <ctype.h>
#include <stdlib.h>
#include <sys/types.h>
#ifdef WIN32
#include <FL/filename.H>
#else
#if HAVE_DIRENT_H
# include <dirent.h>
#else
# define dirent direct
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#endif
#ifdef __cplusplus
extern "C"
#endif
int numericsort(struct dirent **A, struct dirent **B) {
const char* a = (*A)->d_name;
const char* b = (*B)->d_name;
int ret = 0;
for (;;) {
if (isdigit(*a) && isdigit(*b)) {
int zdiff,diff,magdiff;
zdiff = 0;
while (*a == '0') {a++; zdiff++;}
while (*b == '0') {b++; zdiff--;}
while (isdigit(*a) && *a == *b) {a++; b++;}
diff = (isdigit(*a) && isdigit(*b)) ? *a - *b : 0;
magdiff = 0;
while (isdigit(*a)) {magdiff++; a++;}
while (isdigit(*b)) {magdiff--; b++;}
if (ret);
else if (magdiff) ret = magdiff;
else if (diff) ret = diff;
else if (zdiff) ret = zdiff;
} else if (*a == *b) {
if (!*a) return ret;
a++; b++;
} else
return (*a-*b);
}
}
/*
* End of "$Id: numericsort.c,v 1.6 1998/10/21 14:21:10 mike Exp $".
*/
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