source: trunk/lib/rmdirhier.cc @ 1213

Last change on this file since 1213 was 1213, checked in by Peter Johansson, 12 years ago

avoid using GNU extensions. fixes #478

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.9 KB
Line 
1// $Id: rmdirhier.cc 1213 2010-10-09 14:47:10Z peter $
2
3/*
4  Copyright (C) 2006 Jari Häkkinen
5  Copyright (C) 2007, 2008, 2009 Jari Häkkinen, Peter Johansson
6  Copyright (C) 2010 Peter Johansson
7
8  This file is part of svndigest, http://dev.thep.lu.se/svndigest
9
10  svndigest is free software; you can redistribute it and/or modify it
11  under the terms of the GNU General Public License as published by
12  the Free Software Foundation; either version 3 of the License, or
13  (at your option) any later version.
14
15  svndigest is distributed in the hope that it will be useful, but
16  WITHOUT ANY WARRANTY; without even the implied warranty of
17  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  General Public License for more details.
19
20  You should have received a copy of the GNU General Public License
21  along with svndigest. If not, see <http://www.gnu.org/licenses/>.
22*/
23
24#include "rmdirhier.h"
25#include "utility.h"
26
27#include <cstdio>
28#include <cstring>
29#include <dirent.h>
30#include <cerrno>
31#include <fcntl.h>
32#include <iostream>
33#include <sys/stat.h>
34#include <unistd.h>
35
36
37namespace theplu {
38namespace svndigest {
39
40  void rmdirhier(const std::string& path)
41  {
42    int fd=open(".",O_RDONLY);  // remember "original" cwd
43    void rmdirhier__(const std::string&);
44
45    try {
46      rmdirhier__(path);
47    }
48    catch(const BadDirectory& x) {
49      std::cerr << "svndigest: " << x.what() << "\n" 
50                << strerror(errno) << std::endl;
51    }
52    catch(const DirectoryOpenError& x) {
53      std::cerr << "svndigest: cannot open directory " << x.what() << "\n" 
54                << strerror(errno) << "\n";
55    }
56    catch(const FileDeleteError& x) {
57      std::cerr << "svndigest: cannot delete file " << x.what() << "\n"
58                << strerror(errno) << "\n";
59    }
60    catch(const DirectoryDeleteError& x) {
61      std::cerr << "svndigest: cannot delete directory " << x.what() << "\n"
62                << strerror(errno) << "\n";
63    }
64
65    fchdir(fd); // return to "original" cwd
66  }
67
68
69  void rmdirhier__(const std::string& dir)
70  {
71    struct stat buf;
72    // using lstat because links should not be treated as dirs
73    lstat(dir, &buf);
74    // check if dir - if not delete the node
75    if (!(buf.st_mode & S_IFDIR)) {
76      // Make sure file is removable before removing it
77      chmod(dir.c_str(),S_IWRITE);
78      if (remove(dir.c_str()))
79        throw FileDeleteError(concatenate_path(pwd(),dir));
80      return;
81    }
82    if (::chdir(dir.c_str()))
83      throw BadDirectory(concatenate_path(pwd(),dir));
84
85   // Delete any remaining directory entries
86    DIR* dp;
87    struct dirent *entry;
88    if (!(dp=opendir(".")))
89      throw DirectoryOpenError(concatenate_path(pwd(),dir));
90    while ((entry=readdir(dp)) != NULL) {
91      if ((std::string(entry->d_name) == ".") ||
92          (std::string(entry->d_name) == ".."))
93        continue;
94      rmdirhier__(entry->d_name);
95    }
96    closedir(dp);
97
98    // Remove the directory from its parent
99    chdir("..");
100    if (remove(dir.c_str()))
101      throw DirectoryDeleteError(concatenate_path(pwd(),dir));
102  }
103
104}} // of namespace svndigest and namespace theplu
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