1 // ----------------------------------------------------------------------------
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3 // ----------------------------------------------------------------------------
4 // The MIT License (MIT)
5 //
6 // Copyright (c) 2018 www.open3d.org
7 //
8 // Permission is hereby granted, free of charge, to any person obtaining a copy
9 // of this software and associated documentation files (the "Software"), to deal
10 // in the Software without restriction, including without limitation the rights
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12 // copies of the Software, and to permit persons to whom the Software is
13 // furnished to do so, subject to the following conditions:
14 //
15 // The above copyright notice and this permission notice shall be included in
16 // all copies or substantial portions of the Software.
17 //
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 // IN THE SOFTWARE.
25 // ----------------------------------------------------------------------------
26
27 #include "IJsonConvertibleIO.h"
28
29 #include <unordered_map>
30 #include <Core/Utility/Console.h>
31 #include <Core/Utility/FileSystem.h>
32
33 namespace three{
34
35 namespace {
36
37 static const std::unordered_map<std::string,
38 std::function<bool(const std::string &, IJsonConvertible &)>>
39 file_extension_to_ijsonconvertible_read_function
40 {{"json", ReadIJsonConvertibleFromJSON},
41 };
42
43 static const std::unordered_map<std::string,
44 std::function<bool(const std::string &, const IJsonConvertible &)>>
45 file_extension_to_ijsonconvertible_write_function
46 {{"json", WriteIJsonConvertibleToJSON},
47 };
48
49 } // unnamed namespace
50
ReadIJsonConvertible(const std::string & filename,IJsonConvertible & object)51 bool ReadIJsonConvertible(const std::string &filename,
52 IJsonConvertible &object)
53 {
54 std::string filename_ext =
55 filesystem::GetFileExtensionInLowerCase(filename);
56 if (filename_ext.empty()) {
57 PrintWarning("Read IJsonConvertible failed: unknown file extension.\n");
58 return false;
59 }
60 auto map_itr =
61 file_extension_to_ijsonconvertible_read_function.find(filename_ext);
62 if (map_itr == file_extension_to_ijsonconvertible_read_function.end()) {
63 PrintWarning("Read IJsonConvertible failed: unknown file extension.\n");
64 return false;
65 }
66 return map_itr->second(filename, object);
67 }
68
WriteIJsonConvertible(const std::string & filename,const IJsonConvertible & object)69 bool WriteIJsonConvertible(const std::string &filename,
70 const IJsonConvertible &object)
71 {
72 std::string filename_ext =
73 filesystem::GetFileExtensionInLowerCase(filename);
74 if (filename_ext.empty()) {
75 PrintWarning("Write IJsonConvertible failed: unknown file extension.\n");
76 return false;
77 }
78 auto map_itr =
79 file_extension_to_ijsonconvertible_write_function.find(
80 filename_ext);
81 if (map_itr == file_extension_to_ijsonconvertible_write_function.end()) {
82 PrintWarning("Write IJsonConvertible failed: unknown file extension.\n");
83 return false;
84 }
85 return map_itr->second(filename, object);
86 }
87
88 } // namespace three
89