add-ed 0.6.0

Embeddable pure rust editor based on ED
Documentation 
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

// Tests of the trickier cases
#[cfg(test)]
mod tests {
  use super::*;
  use super::super::Buffer;

  fn create_data() -> Vec<String> {
    vec![
      "1\n".to_string(),
      "2\n".to_string(),
      "3\n".to_string(),
      "4\n".to_string(),
      "5\n".to_string(),
      "6\n".to_string()
    ]
  }

  fn create_buffer() -> VecBuffer {
    let mut buf = VecBuffer::new();
    buf.insert(&mut create_data(), 0).unwrap();
    buf
  }

  #[test]
  fn verify_index() {
    let buffer = create_buffer();
    assert_eq!(Ok(()), buffer.verify_index(buffer.len()));
    assert_eq!(Ok(()), buffer.verify_index(0));
    assert_eq!(Err(INDEX_TOO_BIG), buffer.verify_index(buffer.len() + 1));
  }

  #[test]
  fn verify_selection() {
    let buffer = create_buffer();
    assert_eq!(Ok(()), buffer.verify_selection((0, buffer.len())));
    assert_eq!(Err(INDEX_TOO_BIG), buffer.verify_selection((0, buffer.len() + 1)));
    assert_eq!(Err(SELECTION_EMPTY), buffer.verify_selection((1, 0)));
  }

  #[test]
  fn saved() {
    let mut buffer = VecBuffer::new();
    assert!(buffer.saved());
    buffer.insert(&mut vec!["0".to_string()], 0).unwrap();
    assert!(!buffer.saved());
    buffer.set_saved();
    assert!(buffer.saved());
  }

  #[test]
  fn get_selection() {
    let data = create_data();
    let mut buffer = VecBuffer::new();
    buffer.insert(&mut data.clone(), 0).unwrap();
    assert_eq!(
      buffer.get_selection((0, 2)),
      Ok(&data[0 .. 2])
    );
  }

  #[test]
  fn insert() {
    // Todo, verify position of insert specifically.
    let data = create_data();
    let mut compare = data.clone();
    let mut buffer = VecBuffer::new();
    buffer.insert(&mut data.clone(), 0).unwrap();
    // Check that it inserts as expected
    let mut tmp = compare.split_off(3);
    compare.append(&mut data.clone());
    compare.append(&mut tmp);
    buffer.insert(&mut data.clone(), 3).unwrap();
    assert_eq!(Ok(&compare[..]), buffer.get_selection((0, buffer.len())));
  }

  #[test]
  fn delete() {
    let mut buffer = VecBuffer::new();
    let mut data = create_data();
    buffer.insert(&mut data.clone(), 0).unwrap();
    buffer.delete((0,3)).unwrap();
    let mut tail = data.split_off(3);
    let _deleted = data.split_off(0);
    data.append(&mut tail);
    assert_eq!(
      Ok(&data[..]),
      buffer.get_selection((0, buffer.len()))
    );
  }

  #[test]
  fn change() {
    let mut buffer1 = create_buffer();
    let mut buffer2 = create_buffer();
    let data = create_data();

    // Change should be the same as delete and insert
    // It exists only to allow optimisations
    buffer1.change(&mut data.clone(), (2,4)).unwrap();
    buffer2.delete((2,4)).unwrap();
    buffer2.insert(&mut data.clone(), 2).unwrap();
    assert_eq!(
      buffer1.get_selection((0, buffer1.len())).unwrap(),
      buffer2.get_selection((0, buffer2.len())).unwrap()
    );
  }

  #[test]
  fn mov() {
    // Create identical buffers and verify the move by
    // by comparing it to get_selection and insert
    let mut tmp = create_data();
    let mut buffer1 = VecBuffer::new();
    let mut buffer2 = VecBuffer::new();
    buffer1.insert(&mut tmp.clone(), 0).unwrap();
    buffer2.insert(&mut tmp, 0).unwrap();
    // forward
    buffer1.mov((0,3), 5).unwrap();
    let mut tmp = buffer2.get_selection((0,3)).unwrap().to_vec();
    buffer2.insert(&mut tmp, 5).unwrap();
    buffer2.delete((0,3)).unwrap();
    assert_eq!(
      buffer1.get_selection((0, buffer1.len())),
      buffer2.get_selection((0, buffer2.len()))
    );

    // Recreate buffers and test backward
    let mut tmp = create_data();
    let mut buffer1 = VecBuffer::new();
    let mut buffer2 = VecBuffer::new();
    buffer1.insert(&mut tmp.clone(), 0).unwrap();
    buffer2.insert(&mut tmp, 0).unwrap();
    // backward
    buffer1.mov((3,5), 2).unwrap();
    let mut tmp = buffer2.get_selection((3,5)).unwrap().to_vec();
    buffer2.delete((3,5)).unwrap();
    buffer2.insert(&mut tmp, 2 - 1).unwrap();
    assert_eq!(
      buffer1.get_selection((0, buffer1.len())),
      buffer2.get_selection((0, buffer2.len()))
    );

    // Verify the edges of moving into self
    let mut buffer = create_buffer();
    assert_eq!(
      Err(MOVE_INTO_SELF),
      buffer.mov((1,4), 2)
    );
    assert_eq!(
      Err(MOVE_INTO_SELF),
      buffer.mov((1,4), 3)
    );
    assert_eq!(
      Ok(()),
      buffer.mov((1,4), 4)
    );
    assert_eq!(
      Ok(()),
      buffer.mov((1,4), 1)
    );
  }

  #[test]
  fn copy() {
    // Compare with get_selection and insert
    let data = create_data();
    let mut buffer1 = VecBuffer::new();
    let mut buffer2 = VecBuffer::new();
    buffer1.insert(&mut data.clone(), 0).unwrap();
    buffer2.insert(&mut data.clone(), 0).unwrap();
    // copy forward
    buffer1.copy((1,3), 4).unwrap();
    let mut tmp = buffer2.get_selection((1,3)).unwrap().to_vec();
    buffer2.insert(&mut tmp, 4).unwrap();
    assert_eq!(
      buffer1.get_selection((0, buffer1.len())),
      buffer2.get_selection((0, buffer2.len()))
    );
  }

  #[test]
  fn join() {
    let mut data = create_data();
    let mut buffer = VecBuffer::new();
    buffer.insert(&mut data.clone(), 0).unwrap();
    // First join two lines together, 1 and 2
    buffer.join((1,3)).unwrap();
    let tmp = data.remove(2);
    data[1].pop(); // Get rid of the newline
    data[1].push_str(&tmp);
    assert_eq!(
      &data[..],
      buffer.get_selection((0,buffer.len())).unwrap()
    );
    // Then join the whole buffer
    buffer.join((0,buffer.len())).unwrap();
    let mut tmp = String::new();
    for line in data {
      tmp.push_str(&line[0 .. line.len() - 1]);
    }
    tmp.push('\n');
    assert_eq!(
      &tmp,
      &buffer.get_selection((0,1)).unwrap()[0]
    );
  }

  #[test]
  fn search_replace() {
    let mut data = vec!["test line\n".to_string(), "also a test line\n".to_string()];
    let mut buffer = VecBuffer::new();
    buffer.insert(&mut data.clone(), 0).unwrap();
    // Verify non-global against replacen
    buffer.search_replace(("test", "best"), (0, buffer.len()), false).unwrap();
    let line = data[0].replacen("test", "best", 1);
    data[0] = line;
    assert_eq!(
      &data[..],
      buffer.get_selection((0,buffer.len())).unwrap()
    );
    // And verify global using replace
    buffer.search_replace(("line", "string"), (0, buffer.len()), true).unwrap();
    data = data.iter().map(|line| line.replace("line", "string")).collect();
    assert_eq!(
      &data[..],
      buffer.get_selection((0,buffer.len())).unwrap()
    );
  }

  #[test]
  fn find_matching() {
    let mut data = vec![
      "test line\n".to_string(),
      "hard to write random works\n".to_string(),
      "to test over\n".to_string(),
      "None the less, it is needed\n".to_string(),
      "in this case\n".to_string()
    ];
    let mut buffer = VecBuffer::new();
    buffer.insert(&mut data, 0).unwrap();
    // Verify the return using known indices
    assert_eq!(
      vec![0,2],
      buffer.find_matching("test", (0, buffer.len())).unwrap()
    );

  }
}