/* * "$Id: numericsort.c,v 1.1.1.1 2003/08/07 21:18:41 jasonk Exp $" * * Numeric sorting routine for the Fast Light Tool Kit (FLTK). * * Copyright 1998-1999 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 __cplusplusextern "C"#endifint 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((unsigned)*a) && isdigit((unsigned)*b)) {      int diff,magdiff;      while (*a == '0') a++;      while (*b == '0') b++;      while (isdigit((unsigned)*a) && *a == *b) {a++; b++;}      diff = (isdigit((unsigned)*a) && isdigit((unsigned)*b)) ? *a - *b : 0;      magdiff = 0;      while (isdigit((unsigned)*a)) {magdiff++; a++;}      while (isdigit((unsigned)*b)) {magdiff--; b++;}      if (magdiff) {ret = magdiff; break;} /* compare # of significant digits*/      if (diff) {ret = diff; break;}	/* compare first non-zero digit */    } else {#if 1      if ((ret = tolower((unsigned)*a)-tolower((unsigned)*b))) break; /* compare case-insensitve */#else      if ((ret = *a-*b)) break;	/* compare case-sensitive */#endif      if (!*a) break;      a++; b++;    }  }  if (!ret) return 0;  else return (ret < 0) ? -1 : 1;}/* * End of "$Id: numericsort.c,v 1.1.1.1 2003/08/07 21:18:41 jasonk Exp $". */