1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
use crate::{
error::{ExportError, TreeError},
link::Link,
node::Node,
tree::Tree,
};
use std::{fs::File, io::Write, path::Path};
use yaml_rust::{yaml, Yaml, YamlEmitter};
pub fn export<P>(tree: &Tree, path: P) -> Result<(), ExportError>
where
P: AsRef<Path>,
{
let source = tree_to_source(tree)?;
let mut file = File::create(path)?;
file.write_all(source.as_bytes())?;
Ok(())
}
pub fn tree_to_source(tree: &Tree) -> Result<String, ExportError> {
let yaml = tree_to_yaml(&tree)?;
let mut writer = String::new();
let mut emitter = YamlEmitter::new(&mut writer);
emitter.compact(true);
emitter.dump(&yaml)?;
Ok(writer)
}
fn tree_to_yaml(tree: &Tree) -> Result<Yaml, TreeError> {
let root_key = tree.root_key().ok_or_else(|| TreeError::RootNotSet())?;
if tree.nodes.len() == 0 {
return Err(TreeError::Validation("Node map has a length of 0".into()));
}
let mut node_map = yaml::Hash::new();
for (key, node) in &tree.nodes {
let yaml_key = Yaml::String(key.to_owned());
let yaml_node = node_to_yaml(&node)?;
node_map.insert(yaml_key, yaml_node);
}
let mut yaml = yaml::Hash::new();
yaml.insert(
Yaml::String("root".to_string()),
Yaml::String(root_key.to_owned()),
);
yaml.insert(Yaml::String("nodes".to_string()), Yaml::Hash(node_map));
Ok(Yaml::Hash(yaml))
}
fn node_to_yaml(node: &Node) -> Result<Yaml, TreeError> {
let mut map = yaml::Hash::new();
map.insert(
Yaml::String("dialogue".to_string()),
Yaml::String(node.dialogue.to_owned()),
);
if !node.links.is_empty() {
let mut links = yaml::Array::new();
for link in &node.links {
let yaml_link = link_to_yaml(link)?;
links.push(yaml_link);
}
map.insert(Yaml::String("links".to_string()), Yaml::Array(links));
}
let yaml = Yaml::Hash(map);
Ok(yaml)
}
fn link_to_yaml(link: &Link) -> Result<Yaml, TreeError> {
let mut map = yaml::Hash::new();
map.insert(
Yaml::String(link.to_key.to_owned()),
Yaml::String(link.dialogue.to_owned()),
);
Ok(Yaml::Hash(map))
}
#[cfg(test)]
#[test]
fn test_export() {
let mut tree = Tree::new();
let node = Node::new("start", "It's a bad day.");
tree.nodes.insert("start".to_owned(), node);
tree.set_root_key("start").unwrap();
assert!(export(&tree, "examples/dialogue_files/export.convo.yml").is_ok());
}
#[test]
fn test_export_path_exists() {
use crate::error::ExportError::IO;
let mut tree = Tree::new();
let node = Node::new("start", "It's a bad day.");
tree.nodes.insert("start".to_owned(), node);
tree.set_root_key("start").unwrap();
assert!(matches!(export(&tree, "/not/a/path").unwrap_err(), IO(_)));
}
#[test]
fn test_tree_to_source() {
let mut tree = Tree::new();
let node = Node::new("start", "It's a bad day.");
tree.nodes.insert("start".to_owned(), node);
tree.set_root_key("start").unwrap();
let source = r#"---
root: start
nodes:
start:
dialogue: "It's a bad day.""#;
assert_eq!(source, tree_to_source(&tree).unwrap());
}
#[test]
fn test_tree_to_source_root_exists() {
use crate::error::ExportError::Validation;
let mut tree = Tree::new();
let node = Node::new("start", "It's a bad day.");
tree.nodes.insert("start".to_owned(), node);
assert!(matches!(tree_to_source(&tree).unwrap_err(), Validation(_)));
}
#[test]
fn test_tree_to_source_nodes_exist() {
use crate::error::ExportError::Validation;
let mut tree = Tree::new();
unsafe { tree.set_root_key_unchecked("start") }
assert!(matches!(tree_to_source(&tree).unwrap_err(), Validation(_)));
}
#[test]
#[ignore = "Waiting on issue #3"]
fn test_tree_to_source_unreachable_nodes() {
use crate::error::ExportError::Validation;
let mut tree = Tree::new();
let node1 = Node::new("1", "It's a bad day.");
let node2 = Node::new("2", "It's a good day.");
tree.nodes.insert("1".to_owned(), node1);
tree.nodes.insert("2".to_owned(), node2);
tree.set_root_key("1").unwrap();
assert!(matches!(tree_to_source(&tree).unwrap_err(), Validation(_)));
let mut tree = Tree::new();
let mut parent = Node::new("parent", "I am the parent.");
let child = Node::new("child", "I am the child.");
Link::link(&mut parent, &child, "I make sure no orphan nodes exist.");
tree.nodes.insert("parent".to_owned(), parent);
tree.nodes.insert("child".to_owned(), child);
tree.set_root_key("child").unwrap();
assert!(matches!(tree_to_source(&tree).unwrap_err(), Validation(_)));
}
#[test]
#[ignore = "Waiting on issue #10"]
fn test_tree_to_source_invalid_links() {
use crate::error::ExportError::Validation;
let mut tree = Tree::new();
let mut node = Node::new("root", "I am the only node.");
let invalid_link = Link::new("invalid", "I am an invalid link");
node.links.push(invalid_link);
tree.nodes.insert("root".to_owned(), node);
tree.set_root_key("root").unwrap();
assert!(matches!(tree_to_source(&tree).unwrap_err(), Validation(_)));
}