source: trunk/bin/Parameter.cc @ 1091

Last change on this file since 1091 was 1091, checked in by Peter Johansson, 11 years ago

fixes #454. fail if config file is directory rather than require it's a regular file

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 4.9 KB
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1// $Id: Parameter.cc 1091 2010-06-12 18:14:08Z peter $
2
3/*
4  Copyright (C) 2006, 2007, 2008 Jari Häkkinen, Peter Johansson
5  Copyright (C) 2009, 2010 Peter Johansson
6
7  This file is part of svndigest, http://dev.thep.lu.se/svndigest
8
9  svndigest is free software; you can redistribute it and/or modify it
10  under the terms of the GNU General Public License as published by
11  the Free Software Foundation; either version 3 of the License, or
12  (at your option) any later version.
13
14  svndigest is distributed in the hope that it will be useful, but
15  WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  General Public License for more details.
18
19  You should have received a copy of the GNU General Public License
20  along with svndigest. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#include <config.h> // this header file is created by configure
24
25#include "Parameter.h"
26
27#include "OptionVersion.h"
28#include "../lib/utility.h" // to avoid inclusion of yat file
29
30#include "yat/ColumnStream.h"
31#include "yat/Exception.h"
32#include "yat/OptionArg.h"
33#include "yat/OptionHelp.h"
34#include "yat/OptionSwitch.h"
35
36#include <cassert>
37#include <cerrno>
38#include <cstddef>
39#include <cstring>
40#include <fstream>
41#include <iostream>
42#include <sstream>
43#include <stdexcept>
44#include <string>
45#include <sys/stat.h>
46
47namespace theplu {
48namespace svndigest {
49
50  Parameter::Parameter(void)
51    : cmd_( std::string("Mandatory arguments to long options ") + 
52            std::string("are mandatory for short options too.")), 
53      config_file_(cmd_, "config-file", 
54                   "configuration file [<ROOT>/.svndigest/config]"),
55      generate_config_(cmd_, "g,generate-config", 
56                       "write configuration to standard output"),
57      help_(cmd_),
58      ignore_cache_(cmd_, "ignore-cache", 
59                    std::string("ignore cache files and analyze ") +
60                    std::string("everything from repository")),
61      root_(cmd_, "r,root", 
62            "svn controlled directory to perform statistics on [.]"),
63      verbose_(cmd_, "v,verbose", "explain what is being done"),
64      version_(cmd_, "version", "print version information and exit", &verbose_)
65  {
66  }
67
68  void Parameter::parse(int argc, char* argv[])
69  {
70    init();
71    try {
72      cmd_.parse(argc, argv);
73    }
74    catch (yat::utility::cmd_error& e) {
75      std::cerr << e.what() << std::endl;
76      exit (-1);
77    }
78
79    set_default();
80
81    // analyse arguments
82    analyse();
83  }
84
85
86  Parameter::~Parameter(void)
87  {
88  }
89
90
91  void Parameter::analyse(void)
92  {
93    std::string save_wd = pwd();
94
95    // check root but not if -g option given
96    if (!generate_config()) {
97      check_existence(root_.value());
98      check_readable(root_.value());
99      chdir(root_.value());
100      root_.value(pwd());
101      chdir(save_wd);
102    }
103
104    // check config file
105    struct stat nodestat;
106    // true also if there is a broken symlink named...
107    bool config_exists = !lstat(config_file_.value().c_str(), &nodestat);
108    // the latter case in order to catch broken symlink
109    if (config_file_.present() || config_exists)
110      // throws if file does not exists
111      check_existence(config_file_.value());
112    if (config_exists) {
113      // throws if file is not readable
114      check_readable(config_file_.value());
115      stat(config_file_.value().c_str(), &nodestat);
116      if (S_ISDIR(nodestat.st_mode)) {
117        std::stringstream ss;
118        ss << cmd_.program_name() << ": `" << config_file_.value() 
119           << "' is a directory";
120        throw yat::utility::cmd_error(ss.str());
121      }
122    }
123    analyse2();
124  }
125
126
127  void Parameter::check_existence(std::string path) const
128  {
129    if (node_exist(path))
130      return;
131    std::stringstream ss;
132    ss << cmd_.program_name() << ": cannot stat `" << path << "': " 
133       << strerror(errno);
134    throw yat::utility::cmd_error(ss.str());
135  }
136
137 
138  void Parameter::check_readable(std::string path) const
139  {
140    if (!access_rights(path, "r"))
141      return;
142    std::stringstream ss;
143    ss << cmd_.program_name() << ": cannot open `" << path << "': " 
144       << strerror(errno);
145    throw yat::utility::cmd_error(ss.str());
146  }
147 
148
149  std::string Parameter::config_file(void) const
150  {
151    return config_file_.value();
152  }
153
154
155  bool Parameter::generate_config(void) const
156  {
157    return generate_config_.present();
158  }
159
160
161  bool Parameter::ignore_cache(void) const
162  {
163    return ignore_cache_.present();
164  }
165
166
167  void Parameter::init(void)
168  {
169    // we like the options sorted alphabetically
170    cmd_.sort();
171    config_file_.print_arg("=FILE");
172    root_.print_arg("=ROOT");
173    std::stringstream ss;
174    ss << "Report bugs to " << PACKAGE_BUGREPORT << ".\n"
175       << PACKAGE << " home page: <" << PACKAGE_URL << ">.\n";
176    help_.post_arguments() = ss.str();
177    init2();
178  }
179
180
181  std::string Parameter::root(void) const
182  {
183    return root_.value();
184  }
185
186  void Parameter::set_default(void)
187  {
188    if (!root_.present())
189      root_.value(".");
190
191    if (!config_file_.present())
192      config_file_.value(concatenate_path(root_.value(),".svndigest/config"));
193
194    set_default2();
195  }
196
197
198  bool Parameter::verbose(void) const
199  {
200    return verbose_.present();
201  }
202
203
204}} // of namespace svndigest and namespace theplu
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