source: branches/0.8-stable/bin/Parameter.cc @ 1246

Last change on this file since 1246 was 1246, checked in by Peter Johansson, 11 years ago

fixes #477

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
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1// $Id: Parameter.cc 1246 2010-10-30 02:41:51Z 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 "lib/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
100      // check that root is directory (or link pointing to directory)
101      struct stat stats;
102      stat(root_.value().c_str(), &stats);
103      if (!S_ISDIR(stats.st_mode)) {
104        std::stringstream ss;
105        ss << cmd_.program_name() << ": '" << root_.value() 
106           << "': Not a directory"; 
107        throw yat::utility::cmd_error(ss.str());
108      }
109      chdir(root_.value());
110      root_full_ = pwd();
111      chdir(save_wd);
112
113      // take care of when root is a symlink (see ticket #477)
114      lstat(root_.value().c_str(), &stats);
115      if (S_ISLNK(stats.st_mode))
116        root_basename_ = file_name(root_.value());
117      else
118        root_basename_ = file_name(root_full_);
119    }
120
121    // check config file
122    struct stat nodestat;
123    // true also if there is a broken symlink named...
124    bool config_exists = !lstat(config_file_.value().c_str(), &nodestat);
125    // the latter case in order to catch broken symlink
126    if (config_file_.present() || config_exists)
127      // throws if file does not exists
128      check_existence(config_file_.value());
129    if (config_exists) {
130      // throws if file is not readable
131      check_readable(config_file_.value());
132      stat(config_file_.value().c_str(), &nodestat);
133      if (S_ISDIR(nodestat.st_mode)) {
134        std::stringstream ss;
135        ss << cmd_.program_name() << ": `" << config_file_.value() 
136           << "' is a directory";
137        throw yat::utility::cmd_error(ss.str());
138      }
139    }
140    analyse2();
141  }
142
143
144  void Parameter::check_existence(std::string path) const
145  {
146    if (node_exist(path))
147      return;
148    std::stringstream ss;
149    ss << cmd_.program_name() << ": cannot stat `" << path << "': " 
150       << strerror(errno);
151    throw yat::utility::cmd_error(ss.str());
152  }
153
154 
155  void Parameter::check_readable(std::string path) const
156  {
157    if (!access_rights(path, "r"))
158      return;
159    std::stringstream ss;
160    ss << cmd_.program_name() << ": cannot open `" << path << "': " 
161       << strerror(errno);
162    throw yat::utility::cmd_error(ss.str());
163  }
164 
165
166  std::string Parameter::config_file(void) const
167  {
168    return config_file_.value();
169  }
170
171
172  bool Parameter::generate_config(void) const
173  {
174    return generate_config_.present();
175  }
176
177
178  bool Parameter::ignore_cache(void) const
179  {
180    return ignore_cache_.present();
181  }
182
183
184  void Parameter::init(void)
185  {
186    // we like the options sorted alphabetically
187    cmd_.sort();
188    config_file_.print_arg("=FILE");
189    root_.print_arg("=ROOT");
190    std::stringstream ss;
191    ss << "Report bugs to " << PACKAGE_BUGREPORT << ".\n"
192       << PACKAGE << " home page: <" << PACKAGE_URL << ">.\n";
193    help_.post_arguments() = ss.str();
194    init2();
195  }
196
197
198  std::string Parameter::root(void) const
199  {
200    return root_full_;
201  }
202
203
204  const std::string& Parameter::root_basename(void) const
205  {
206    assert(root_basename_.size());
207    return root_basename_;
208  }
209
210
211  void Parameter::set_default(void)
212  {
213    if (!root_.present())
214      root_.value(".");
215
216    if (!config_file_.present())
217      config_file_.value(concatenate_path(root_.value(),".svndigest/config"));
218
219    set_default2();
220  }
221
222
223  bool Parameter::verbose(void) const
224  {
225    return verbose_.present();
226  }
227
228
229}} // of namespace svndigest and namespace theplu
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