Gracefully handle templates that lack contents in their description or created_with...
[ardour.git] / libs / ardour / template_utils.cc
1 /*
2     Copyright (C) 2012 Paul Davis
3
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU General Public License as published by
6     the Free Software Foundation; either version 2 of the License, or
7     (at your option) any later version.
8
9     This program is distributed in the hope that it will be useful,
10     but WITHOUT ANY WARRANTY; without even the implied warranty of
11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12     GNU General Public License for more details.
13
14     You should have received a copy of the GNU General Public License
15     along with this program; if not, write to the Free Software
16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17
18 */
19
20 #include <algorithm>
21 #include <cstring>
22
23 #include <glibmm.h>
24
25 #include "pbd/file_utils.h"
26 #include "pbd/stl_delete.h"
27 #include "pbd/xml++.h"
28
29 #include "ardour/template_utils.h"
30 #include "ardour/directory_names.h"
31 #include "ardour/filesystem_paths.h"
32 #include "ardour/filename_extensions.h"
33 #include "ardour/search_paths.h"
34 #include "ardour/io.h"
35
36 #include "pbd/i18n.h"
37
38 using namespace std;
39 using namespace PBD;
40
41 namespace ARDOUR {
42
43 std::string
44 user_template_directory ()
45 {
46         return Glib::build_filename (user_config_directory(), templates_dir_name);
47 }
48
49 std::string
50 user_route_template_directory ()
51 {
52         return Glib::build_filename (user_config_directory(), route_templates_dir_name);
53 }
54
55 static bool
56 template_filter (const string &str, void* /*arg*/)
57 {
58         if (!Glib::file_test (str, Glib::FILE_TEST_IS_DIR)) {
59                 return false;
60         }
61
62         return true;
63 }
64
65 static bool
66 route_template_filter (const string &str, void* /*arg*/)
67 {
68         if (str.find (template_suffix) == str.length() - strlen (template_suffix)) {
69                 return true;
70         }
71
72         return false;
73 }
74
75 string
76 session_template_dir_to_file (string const & dir)
77 {
78         return Glib::build_filename (dir, Glib::path_get_basename(dir) + template_suffix);
79 }
80
81
82 void
83 find_session_templates (vector<TemplateInfo>& template_names, bool read_xml)
84 {
85         vector<string> templates;
86
87         find_paths_matching_filter (templates, template_search_path(), template_filter, 0, true, true);
88
89         if (templates.empty()) {
90                 cerr << "Found nothing along " << template_search_path().to_string() << endl;
91                 return;
92         }
93
94         cerr << "Found " << templates.size() << " along " << template_search_path().to_string() << endl;
95
96         for (vector<string>::iterator i = templates.begin(); i != templates.end(); ++i) {
97                 string file = session_template_dir_to_file (*i);
98
99                 TemplateInfo rti;
100                 rti.name = Glib::path_get_basename (*i);
101                 rti.path = *i;
102
103                 if (read_xml) {
104
105                         XMLTree tree;
106                         if (!tree.read (file.c_str())) {
107                                 cerr << "Failed to parse Route-template XML file: " << file;
108                                 continue;
109                         }
110
111                         XMLNode* root = tree.root();
112                         
113                         rti.created_with = _("(unknown)");
114                         try {
115                                 XMLNode *pv = root->child("ProgramVersion");
116                                 string created_with;
117                                 if (pv != 0) {
118                                         pv->get_property (X_("created-with"), created_with);
119                                 }
120                                 rti.created_with = created_with;
121                         } catch ( LIBPBD_API::XMLException &e) {}
122
123                         rti.description = _("No Description");
124                         try {
125                                 XMLNode *desc = root->child("description");
126                                 if (desc != 0) {
127                                         rti.description = desc->attribute_value();
128                                 }
129                         } catch ( LIBPBD_API::XMLException &e) {}
130                 }
131
132                 template_names.push_back (rti);
133         }
134 }
135
136 void
137 find_route_templates (vector<TemplateInfo>& template_names)
138 {
139         vector<string> templates;
140
141         find_files_matching_filter (templates, route_template_search_path(), route_template_filter, 0, false, true);
142
143         if (templates.empty()) {
144                 return;
145         }
146
147         for (vector<string>::iterator i = templates.begin(); i != templates.end(); ++i) {
148                 string fullpath = *i;
149
150                 XMLTree tree;
151
152                 if (!tree.read (fullpath.c_str())) {
153                         cerr << "Failed to parse Route-template XML file: " << fullpath;
154                         continue;
155                 }
156
157                 XMLNode* root = tree.root();
158
159                 TemplateInfo rti;
160
161                 rti.created_with = _("(unknown)");
162                 try {
163                         XMLNode *pv = root->child("ProgramVersion");
164                         string created_with;
165                         if (pv != 0) {
166                                 pv->get_property (X_("created-with"), created_with);
167                         }
168                         rti.created_with = created_with;
169                 } catch ( LIBPBD_API::XMLException &e) {}
170
171                 rti.description = _("No Description");
172                 try {
173                         XMLNode *desc = root->child("description");
174                         if (desc != 0) {
175                                 rti.description = desc->attribute_value();
176                         }
177                 } catch ( LIBPBD_API::XMLException &e) {}
178
179                 rti.name = IO::name_from_state (*root->children().front());
180                 rti.path = fullpath;
181
182                 template_names.push_back (rti);
183         }
184 }
185
186 }