root/branches/New_Config_Format-branch/gsdl/lib/fileutil.cpp @ 1279

Revision 1279, 6.3 KB (checked in by sjboddie, 20 years ago)

merged changes to trunk into New_Config_Format branch

  • Property svn:executable set to *
  • Property svn:keywords set to Author Date Id Revision
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1/**********************************************************************
2 *
3 * fileutil.cpp --
4 * Copyright (C) 1999  The New Zealand Digital Library Project
5 *
6 * A component of the Greenstone digital library software
7 * from the New Zealand Digital Library Project at the
8 * University of Waikato, New Zealand.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * $Id$
25 *
26 *********************************************************************/
27
28/*
29   $Log$
30   Revision 1.14.2.1  2000/07/12 22:20:54  sjboddie
31   merged changes to trunk into New_Config_Format branch
32
33   Revision 1.16  2000/05/12 03:09:22  sjboddie
34   minor modifications to get web library compiling under VC++ 6.0
35
36   Revision 1.15  2000/05/04 08:27:28  sjboddie
37   modifications for windows ports of GCC
38
39   Revision 1.14  2000/04/06 19:57:59  cs025
40   Correcting a correction - reinstated all lib files due to silly
41   CVS confusion.
42
43   Revision 1.12  2000/02/21 21:53:19  sjboddie
44   removed old comment
45
46   Revision 1.11  1999/11/21 01:09:30  sjboddie
47   added readdir function for windows
48
49   Revision 1.10  1999/10/25 22:27:51  sjboddie
50   added read_dir function - doesn't support windows yet
51
52   Revision 1.9  1999/10/19 03:52:25  davidb
53   added some useful functions for collection building
54   from webpages
55
56   Revision 1.8  1999/09/07 04:57:42  sjboddie
57   added gpl notice
58
59   Revision 1.7  1999/08/31 08:00:43  rjmcnab
60   Fixed a windows specific error in the file_exists function.
61
62   Revision 1.6  1999/04/06 22:16:49  rjmcnab
63   Added more options for filename_cat.
64
65   Revision 1.5  1999/01/19 01:38:14  rjmcnab
66
67   Made the source more portable.
68
69   Revision 1.4  1999/01/12 01:50:59  rjmcnab
70
71   Standard header.
72
73   Revision 1.3  1999/01/08 02:33:14  rjmcnab
74
75   Added standard header to source files.
76
77 */
78
79
80#include "fileutil.h"
81
82#if defined(GSDL_USE_OBJECTSPACE)
83#  include <ospace\std\iostream>
84#  include <ospace\std\fstream>
85#elif defined(GSDL_USE_IOS_H)
86#  include <iostream.h>
87#  include <fstream.h>
88#else
89#  include <iostream>
90#  include <fstream>
91#endif
92
93
94// returns the proper concatenation of the two paths
95text_t filename_cat (text_t path1, text_t path2) {
96  text_t::iterator here;
97  text_t::iterator begin;
98  text_t::iterator end;
99
100  // make sure there is just one slash, of the correct type,
101  // at the end of path1 (unless path1 is an empty string).
102  if (!path1.empty()) {
103    // remove all trailing slashes
104    here = path1.end();
105    here--;
106    begin = path1.begin();
107    while (here != begin && (*here == '/' || *here == '\\')) {
108      here--;
109    }
110    here++;
111    path1.erase(here,path1.end());
112
113    // add one final slash
114#ifdef __WIN32__
115    path1 += "\\";
116#else
117    path1 += "/";
118#endif
119  }
120
121  // remove all slashes from the start of path2
122  here = path2.begin();
123  end = path2.end();
124  while (here != end && (*here == '/' || *here == '\\')) {
125    here++;
126  }
127  path2.erase (path2.begin(), here);
128 
129  text_t fullpath = path1 + path2;
130
131  // make sure all the right slashes are used
132  here = fullpath.begin();
133  end = fullpath.end();
134  while (here != end) {
135#ifdef __WIN32__
136    if (*here == '/') *here = '\\';
137#else
138    if (*here == '\\') *here = '/';
139#endif
140    here ++;
141  }
142  return fullpath;
143}
144
145text_t filename_cat (text_t path1, text_t path2, text_t path3) {
146  return filename_cat(filename_cat(path1,path2),path3);
147}
148
149text_t filename_cat (text_t path1, text_t path2, text_t path3, text_t path4) {
150  return filename_cat(filename_cat(filename_cat(path1,path2),path3),path4);
151}
152
153text_t filename_cat (text_t path1, text_t path2, text_t path3, text_t path4,
154             text_t path5) {
155  return filename_cat(filename_cat(filename_cat(filename_cat(path1,path2),path3),
156                   path4),path5);
157}
158
159// returns true if filename can be opened
160bool file_exists (const text_t &filename) {
161  char *cstr = filename.getcstr();
162#ifdef GSDL_USE_IOS_H
163  ifstream filestream (cstr, ios::in | ios::nocreate);
164#else
165  ifstream filestream (cstr, ios::in);
166#endif
167  delete cstr;
168
169  if (filestream) {
170    // file exists
171    filestream.close ();
172    return true;
173  }
174
175  // file does not exist
176  return false;
177}
178
179// returns true if filename can be opened
180bool file_writable (const text_t &filename) {
181  char *cstr = filename.getcstr();
182#ifdef GSDL_USE_IOS_H
183  ifstream filestream (cstr, ios::out | ios::nocreate);
184#else
185  ifstream filestream (cstr, ios::out);
186#endif
187  delete cstr;
188
189  if (filestream) {
190    // file exists
191    filestream.close ();
192    return true;
193  }
194
195  // file does not exist
196  return false;
197}
198
199#if defined(__WIN32__) && !defined(__GNUC__)
200
201#include <windows.h>
202
203bool read_dir (const text_t &dirname, text_tarray &filelist) {
204 
205  WIN32_FIND_DATA FileData; 
206  HANDLE hSearch;
207  char *dirpath = dirname.getcstr();
208  strcat (dirpath, "\\*");
209 
210  hSearch = FindFirstFile(dirpath, &FileData);
211  if (hSearch == INVALID_HANDLE_VALUE) return false;
212 
213  text_t filename = FileData.cFileName;
214  if (filename != "." && filename != ".." && filename != "CVS")
215    filelist.push_back (filename);
216 
217  while (FindNextFile(hSearch, &FileData)) {
218    filename = FileData.cFileName;
219    if (filename == "." || filename == ".." || filename == "CVS")
220      continue;
221    filelist.push_back (filename);
222  }
223 
224  FindClose(hSearch);
225 
226  return true;
227}
228
229#else
230
231#include <dirent.h>
232
233bool read_dir (const text_t &dirname, text_tarray &filelist) {
234
235  filelist.erase (filelist.begin(), filelist.end());
236 
237  char *tmp = dirname.getcstr();
238  DIR *dirin = opendir (tmp);
239  delete tmp;
240 
241  if (dirin == NULL) return false;
242 
243  dirent *dirp;
244
245  text_t filename;
246  while ((dirp = readdir (dirin)) != NULL) {
247    filename = dirp->d_name;
248    if (filename == "." || filename == ".." || filename == "CVS")
249      continue;
250    filelist.push_back (filename);
251  }
252  closedir (dirin);
253  return true;
254}
255
256#endif
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