104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
//
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// "$Id: filename_isdir.cxx 8063 2010-12-19 21:20:10Z matt $"
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//
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// Directory detection routines for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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// Used by fl_file_chooser
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#include "flstring.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <FL/filename.H>
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#include <FL/fl_utf8.h>
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#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
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static inline int isdirsep(char c) {return c=='/' || c=='\\';}
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#else
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#define isdirsep(c) ((c)=='/')
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#endif
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int _fl_filename_isdir_quick(const char* n) {
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// Do a quick optimization for filenames with a trailing slash...
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if (*n && isdirsep(n[strlen(n) - 1])) return 1;
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return fl_filename_isdir(n);
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}
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/**
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Determines if a file exists and is a directory from its filename.
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\code
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#include <FL/filename.H>
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[..]
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fl_filename_isdir("/etc"); // returns non-zero
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fl_filename_isdir("/etc/hosts"); // returns 0
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\endcode
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\param[in] n the filename to parse
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\return non zero if file exists and is a directory, zero otherwise
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*/
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int fl_filename_isdir(const char* n) {
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struct stat s;
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char fn[FL_PATH_MAX];
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int length;
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length = strlen(n);
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#ifdef WIN32
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// This workaround brought to you by the fine folks at Microsoft!
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// (read lots of sarcasm in that...)
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if (length < (int)(sizeof(fn) - 1)) {
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if (length < 4 && isalpha(n[0]) && n[1] == ':' &&
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(isdirsep(n[2]) || !n[2])) {
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// Always use D:/ for drive letters
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fn[0] = n[0];
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strcpy(fn + 1, ":/");
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n = fn;
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} else if (length > 0 && isdirsep(n[length - 1])) {
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// Strip trailing slash from name...
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length --;
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memcpy(fn, n, length);
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fn[length] = '\0';
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n = fn;
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}
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}
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#else
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// Matt: Just in case, we strip the slash for other operating
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// systems as well, avoid bugs by sloppy implementations
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// of "stat".
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if (length > 1 && isdirsep(n[length - 1])) {
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length --;
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memcpy(fn, n, length);
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fn[length] = '\0';
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n = fn;
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}
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#endif
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return !fl_stat(n, &s) && (s.st_mode&0170000)==0040000;
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}
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//
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// End of "$Id: filename_isdir.cxx 8063 2010-12-19 21:20:10Z matt $".
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//
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