1 // boost/filesystem/exception.hpp -----------------------------------------------------//
2
3 // Copyright Beman Dawes 2003
4 // Copyright Andrey Semashev 2019
5
6 // Distributed under the Boost Software License, Version 1.0.
7 // See http://www.boost.org/LICENSE_1_0.txt
8
9 // Library home page: http://www.boost.org/libs/filesystem
10
11 #include "platform_config.hpp"
12
13 #include <string>
14 #include <boost/filesystem/config.hpp>
15 #include <boost/filesystem/path.hpp>
16 #include <boost/filesystem/exception.hpp>
17
18 #include "error_handling.hpp"
19
20 #include <boost/config/abi_prefix.hpp> // must be the last #include
21
22 namespace boost {
23 namespace filesystem {
24
filesystem_error(const std::string & what_arg,system::error_code ec)25 filesystem_error::filesystem_error(const std::string& what_arg, system::error_code ec) :
26 system::system_error(ec, what_arg)
27 {
28 try
29 {
30 m_imp_ptr.reset(new impl());
31 }
32 catch (...)
33 {
34 m_imp_ptr.reset();
35 }
36 }
37
filesystem_error(const std::string & what_arg,const path & path1_arg,system::error_code ec)38 filesystem_error::filesystem_error(const std::string& what_arg, const path& path1_arg, system::error_code ec) :
39 system::system_error(ec, what_arg)
40 {
41 try
42 {
43 m_imp_ptr.reset(new impl(path1_arg));
44 }
45 catch (...)
46 {
47 m_imp_ptr.reset();
48 }
49 }
50
filesystem_error(const std::string & what_arg,const path & path1_arg,const path & path2_arg,system::error_code ec)51 filesystem_error::filesystem_error(const std::string& what_arg, const path& path1_arg, const path& path2_arg, system::error_code ec) :
52 system::system_error(ec, what_arg)
53 {
54 try
55 {
56 m_imp_ptr.reset(new impl(path1_arg, path2_arg));
57 }
58 catch (...)
59 {
60 m_imp_ptr.reset();
61 }
62 }
63
filesystem_error(filesystem_error const & that)64 filesystem_error::filesystem_error(filesystem_error const& that) :
65 system::system_error(static_cast< system::system_error const& >(that)),
66 m_imp_ptr(that.m_imp_ptr)
67 {
68 }
69
operator =(filesystem_error const & that)70 filesystem_error& filesystem_error::operator= (filesystem_error const& that)
71 {
72 static_cast< system::system_error& >(*this) = static_cast< system::system_error const& >(that);
73 m_imp_ptr = that.m_imp_ptr;
74 return *this;
75 }
76
~filesystem_error()77 filesystem_error::~filesystem_error() BOOST_NOEXCEPT_OR_NOTHROW
78 {
79 }
80
what() const81 const char* filesystem_error::what() const BOOST_NOEXCEPT_OR_NOTHROW
82 {
83 if (m_imp_ptr.get()) try
84 {
85 if (m_imp_ptr->m_what.empty())
86 {
87 m_imp_ptr->m_what = system::system_error::what();
88 if (!m_imp_ptr->m_path1.empty())
89 {
90 m_imp_ptr->m_what += ": \"";
91 m_imp_ptr->m_what += m_imp_ptr->m_path1.string();
92 m_imp_ptr->m_what += "\"";
93 }
94 if (!m_imp_ptr->m_path2.empty())
95 {
96 m_imp_ptr->m_what += ", \"";
97 m_imp_ptr->m_what += m_imp_ptr->m_path2.string();
98 m_imp_ptr->m_what += "\"";
99 }
100 }
101
102 return m_imp_ptr->m_what.c_str();
103 }
104 catch (...)
105 {
106 m_imp_ptr->m_what.clear();
107 }
108
109 return system::system_error::what();
110 }
111
get_empty_path()112 const path& filesystem_error::get_empty_path() BOOST_NOEXCEPT
113 {
114 static const path empty_path;
115 return empty_path;
116 }
117
118 // error handling helpers declared in error_handling.hpp -----------------------------------------------------//
119
emit_error(err_t error_num,system::error_code * ec,const char * message)120 void emit_error(err_t error_num, system::error_code* ec, const char* message)
121 {
122 if (!ec)
123 BOOST_FILESYSTEM_THROW(filesystem_error(message, system::error_code(error_num, system::system_category())));
124 else
125 ec->assign(error_num, system::system_category());
126 }
127
emit_error(err_t error_num,const path & p,system::error_code * ec,const char * message)128 void emit_error(err_t error_num, const path& p, system::error_code* ec, const char* message)
129 {
130 if (!ec)
131 BOOST_FILESYSTEM_THROW(filesystem_error(message, p, system::error_code(error_num, system::system_category())));
132 else
133 ec->assign(error_num, system::system_category());
134 }
135
emit_error(err_t error_num,const path & p1,const path & p2,system::error_code * ec,const char * message)136 void emit_error(err_t error_num, const path& p1, const path& p2, system::error_code* ec, const char* message)
137 {
138 if (ec == 0)
139 BOOST_FILESYSTEM_THROW(filesystem_error(message, p1, p2, system::error_code(error_num, system::system_category())));
140 else
141 ec->assign(error_num, system::system_category());
142 }
143
144 } // namespace filesystem
145 } // namespace boost
146
147 #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
148