dptran 2.4.0

A tool to run DeepL translations on command line written by Rust.
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
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289

//! Connection with DeepL API using curl

use std::str;
use std::fmt;
use curl::easy::Easy;

/// ConnectionErrors.  
/// It is an error that occurs when communicating with the DeepL API.  
/// ``BadRequest``: 400 Bad Request  
/// ``Forbidden``: 403 Forbidden  
/// ``NotFound``: 404 Not Found  
/// ``RequestEntityTooLarge``: 413 Request Entity Too Large  
/// ``TooManyRequests``: 429 Too Many Requests  
/// ``UnprocessableEntity``: 456 Unprocessable Entity  
/// ``ServiceUnavailable``: 503 Service Unavailable  
/// ``CurlError``: Curl Error  
/// ``UnknownError``: Unknown Error  
#[derive(Debug, PartialEq)]
pub enum ConnectionError {
    NoContent,
    BadRequest,
    Forbidden,
    NotFound,
    MethodNotAllowed,
    RequestEntityTooLarge,
    TooManyRequests,
    UnprocessableEntity,
    ServiceUnavailable,
    CurlError(String),
    UnknownError(u32),
}
impl fmt::Display for ConnectionError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
            ConnectionError::NoContent => write!(f, "204 No Content"),
            ConnectionError::BadRequest => write!(f, "400 Bad Request"),
            ConnectionError::Forbidden => write!(f, "403 Forbidden"),
            ConnectionError::NotFound => write!(f, "404 Not Found"),
            ConnectionError::MethodNotAllowed => write!(f, "405 Method Not Allowed"),
            ConnectionError::RequestEntityTooLarge => write!(f, "413 Request Entity Too Large"),
            ConnectionError::TooManyRequests => write!(f, "429 Too Many Requests"),
            ConnectionError::UnprocessableEntity => write!(f, "456 Unprocessable Entity"),
            ConnectionError::ServiceUnavailable => write!(f, "503 Service Unavailable"),
            ConnectionError::CurlError(ref e) => write!(f, "Curl Error: {}", e),
            ConnectionError::UnknownError(code) => write!(f, "Unknown Error: {}", code),
        }
    }
}

/// Create a POST session
fn make_post_session(url: String, post_data: String) -> Result<Easy, String> {
    let mut easy = Easy::new();
    easy.url(url.as_str()).map_err(|e| e.to_string())?;
    easy.post(true).map_err(|e| e.to_string())?;
    easy.post_fields_copy(post_data.as_bytes()).map_err(|e| e.to_string())?;
    Ok(easy)
}

/// Create a GET session
fn make_get_session(url: String) -> Result<Easy, String> {
    let mut easy = Easy::new();
    easy.url(url.as_str()).map_err(|e| e.to_string())?;
    Ok(easy)
}

/// Create a DELETE session
fn make_delete_session(url: String) -> Result<Easy, String> {
    let mut easy = Easy::new();
    easy.url(url.as_str()).map_err(|e| e.to_string())?;
    easy.custom_request("DELETE").map_err(|e| e.to_string())?;
    Ok(easy)
}

/// Create a PATCH session
fn make_patch_session(url: String, patch_data: String) -> Result<Easy, String> {
    let mut easy = Easy::new();
    easy.url(url.as_str()).map_err(|e| e.to_string())?;
    easy.custom_request("PATCH").map_err(|e| e.to_string())?;
    easy.post_fields_copy(patch_data.as_bytes()).map_err(|e| e.to_string())?;
    Ok(easy)
}

/// Sending and Receiving
fn transfer(mut easy: Easy) -> Result<(Vec<u8>, u32), String> {
    let mut dst = Vec::new();
    {
        let mut transfer = easy.transfer();
        transfer.write_function(|data| {
            dst.extend_from_slice(data);
            Ok(data.len())
        }).map_err(|e| e.to_string())?;
        transfer.perform().map_err(|e| e.to_string())?;
    }
    let response_code = easy.response_code().map_err(|e| e.to_string())?;
    Ok((dst, response_code))
}

/// Error statement generation
fn handle_error(response_code: u32) -> ConnectionError {
    match response_code {
        204 => ConnectionError::NoContent,
        400 => ConnectionError::BadRequest,
        403 => ConnectionError::Forbidden,
        404 => ConnectionError::NotFound,
        405 => ConnectionError::MethodNotAllowed,
        413 => ConnectionError::RequestEntityTooLarge,
        429 => ConnectionError::TooManyRequests,
        456 => ConnectionError::UnprocessableEntity,
        503 => ConnectionError::ServiceUnavailable,
        code => ConnectionError::UnknownError(code),
    }
}

/// Communicate with the DeepL API with header
pub fn post_with_headers(url: String, post_data: String, header: &Vec<String>) -> Result<String, ConnectionError> {
    let mut easy = match make_post_session(url, post_data) {
        Ok(easy) => easy,
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };
    {
        let mut list = curl::easy::List::new();
        for h in header {
            list.append(h).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
        }
        easy.http_headers(list).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
    }
    let (dst, response_code) = match transfer(easy) {
        Ok((dst, response_code)) => (dst, response_code),
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };

    if dst.len() > 0 {
        let s = str::from_utf8(&dst).expect("Invalid UTF-8");
        Ok(s.to_string())
    } else {
        // HTTP Error Handling
        Err(handle_error(response_code))
    }
}

/// Get method with headers
pub fn get_with_headers(url: String, header: &Vec<String>) -> Result<String, ConnectionError> {
    let mut easy = match make_get_session(url) {
        Ok(easy) => easy,
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };
    {
        let mut list = curl::easy::List::new();
        for h in header {
            list.append(h).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
        }
        easy.http_headers(list).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
    }
    let (dst, response_code) = match transfer(easy) {
        Ok((dst, response_code)) => (dst, response_code),
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };

    if dst.len() > 0 {
        let s = str::from_utf8(&dst).expect("Invalid UTF-8");
        Ok(s.to_string())
    } else {
        // HTTP Error Handling
        Err(handle_error(response_code))
    }
}

/// Delete method with headers
pub fn delete_with_headers(url: String, header: &Vec<String>) -> Result<(), ConnectionError> {
    let mut easy = match make_delete_session(url) {
        Ok(easy) => easy,
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };
    {
        let mut list = curl::easy::List::new();
        for h in header {
            list.append(h).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
        }
        easy.http_headers(list).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
    }
    let response_code = match transfer(easy) {
        Ok((_, response_code)) => response_code,
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };

    if response_code == 200 || response_code == 204 {
        Ok(())
    } else {
        // HTTP Error Handling
        Err(handle_error(response_code))
    }
}

/// Patch method with headers
pub fn patch_with_headers(url: String, patch_data: String, header: &Vec<String>) -> Result<String, ConnectionError> {
    let mut easy = match make_patch_session(url, patch_data) {
        Ok(easy) => easy,
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };
    {
        let mut list = curl::easy::List::new();
        for h in header {
            list.append(h).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
        }
        easy.http_headers(list).map_err(|e| ConnectionError::CurlError(e.to_string()))?;
    }
    let (dst, response_code) = match transfer(easy) {
        Ok((dst, response_code)) => (dst, response_code),
        Err(e) => return Err(ConnectionError::CurlError(e)),
    };

    if dst.len() > 0 {
        let s = str::from_utf8(&dst).expect("Invalid UTF-8");
        Ok(s.to_string())
    } else {
        // HTTP Error Handling
        Err(handle_error(response_code))
    }
}

#[cfg(test)]
pub mod tests {
    use super::*;

    #[test]
    fn access_post_with_headers_test() {
        let url = "http://localhost:8000/".to_string();
        let post_data = "test".to_string();
        let headers = vec!["Content-Type: application/json".to_string()];
        let result = post_with_headers(url, post_data, &headers);
        assert!(result.is_ok());
    }

    #[test]
    fn access_delete_test() {
        let url = "http://localhost:8000/".to_string();
        let headers = vec!["Content-Type: application/json".to_string()];
        let result = delete_with_headers(url, &headers);
        assert!(result.is_ok());
    }

    #[test]
    fn access_patch_with_headers_test() {
        let url = "http://localhost:8000/".to_string();
        let patch_data = "test".to_string();
        let headers = vec!["Content-Type: application/json".to_string()];
        let result = patch_with_headers(url, patch_data, &headers);
        assert!(result.is_ok());
    }

    #[test]
    fn impl_handling_error_test() {
        let error_code = 204;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::NoContent);

        let error_code = 400;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::BadRequest);

        let error_code = 403;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::Forbidden);

        let error_code = 404;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::NotFound);

        let error_code = 413;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::RequestEntityTooLarge);

        let error_code = 429;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::TooManyRequests);

        let error_code = 456;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::UnprocessableEntity);

        let error_code = 503;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::ServiceUnavailable);

        let error_code = 999;
        let error = handle_error(error_code);
        assert_eq!(error, ConnectionError::UnknownError(999));
    }
}