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
use std::fmt::{self, Debug, Formatter};
use std::hash::{Hash, Hasher, SipHasher};
use std::mem;
use std::path::PathBuf;
use url::{self, Url};
use core::source::{Source, SourceId};
use core::GitReference;
use core::{Package, PackageId, Summary, Registry, Dependency};
use util::{CargoResult, Config, to_hex};
use sources::PathSource;
use sources::git::utils::{GitRemote, GitRevision};
pub struct GitSource<'cfg> {
remote: GitRemote,
reference: GitReference,
db_path: PathBuf,
checkout_path: PathBuf,
source_id: SourceId,
path_source: Option<PathSource<'cfg>>,
rev: Option<GitRevision>,
config: &'cfg Config,
}
impl<'cfg> GitSource<'cfg> {
pub fn new(source_id: &SourceId,
config: &'cfg Config) -> GitSource<'cfg> {
assert!(source_id.is_git(), "id is not git, id={}", source_id);
let reference = match source_id.git_reference() {
Some(reference) => reference,
None => panic!("Not a git source; id={}", source_id),
};
let remote = GitRemote::new(source_id.url());
let ident = ident(source_id.url());
let db_path = config.git_db_path().join(&ident);
let reference_path = match *reference {
GitReference::Branch(ref s) |
GitReference::Tag(ref s) |
GitReference::Rev(ref s) => s.to_string(),
};
let checkout_path = config.git_checkout_path()
.join(&ident)
.join(&reference_path);
let reference = match source_id.precise() {
Some(s) => GitReference::Rev(s.to_string()),
None => source_id.git_reference().unwrap().clone(),
};
GitSource {
remote: remote,
reference: reference,
db_path: db_path,
checkout_path: checkout_path,
source_id: source_id.clone(),
path_source: None,
rev: None,
config: config,
}
}
pub fn url(&self) -> &Url { self.remote.url() }
pub fn read_packages(&mut self) -> CargoResult<Vec<Package>> {
if self.path_source.is_none() {
try!(self.update());
}
self.path_source.as_mut().unwrap().read_packages()
}
}
fn ident(url: &Url) -> String {
let mut hasher = SipHasher::new_with_keys(0,0);
let url = canonicalize_url(url);
let ident = url.path().unwrap_or(&[])
.last().map(|a| a.clone()).unwrap_or(String::new());
let ident = if ident == "" {
"_empty".to_string()
} else {
ident
};
url.hash(&mut hasher);
format!("{}-{}", ident, to_hex(hasher.finish()))
}
pub fn canonicalize_url(url: &Url) -> Url {
let mut url = url.clone();
if let url::SchemeData::Relative(ref mut rel) = url.scheme_data {
if rel.path.last().map(|s| s.is_empty()).unwrap_or(false) {
rel.path.pop();
}
}
if url.domain() == Some("github.com") {
url.scheme = "https".to_string();
if let url::SchemeData::Relative(ref mut rel) = url.scheme_data {
rel.port = Some(443);
rel.default_port = Some(443);
let path = mem::replace(&mut rel.path, Vec::new());
rel.path = path.into_iter().map(|s| {
s.chars().flat_map(|c| c.to_lowercase()).collect()
}).collect();
}
}
if let url::SchemeData::Relative(ref mut rel) = url.scheme_data {
let needs_chopping = {
let last = rel.path.last().map(|s| &s[..]).unwrap_or("");
last.ends_with(".git")
};
if needs_chopping {
let last = rel.path.pop().unwrap();
rel.path.push(last[..last.len() - 4].to_string())
}
}
url
}
impl<'cfg> Debug for GitSource<'cfg> {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
try!(write!(f, "git repo at {}", self.remote.url()));
match self.reference.to_ref_string() {
Some(s) => write!(f, " ({})", s),
None => Ok(())
}
}
}
impl<'cfg> Registry for GitSource<'cfg> {
fn query(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>> {
let src = self.path_source.as_mut()
.expect("BUG: update() must be called before query()");
src.query(dep)
}
}
impl<'cfg> Source for GitSource<'cfg> {
fn update(&mut self) -> CargoResult<()> {
let actual_rev = self.remote.rev_for(&self.db_path, &self.reference);
let should_update = actual_rev.is_err() ||
self.source_id.precise().is_none();
let (repo, actual_rev) = if should_update {
try!(self.config.shell().status("Updating",
format!("git repository `{}`", self.remote.url())));
trace!("updating git source `{:?}`", self.remote);
let repo = try!(self.remote.checkout(&self.db_path));
let rev = try!(repo.rev_for(&self.reference));
(repo, rev)
} else {
(try!(self.remote.db_at(&self.db_path)), actual_rev.unwrap())
};
try!(repo.copy_to(actual_rev.clone(), &self.checkout_path));
let source_id = self.source_id.with_precise(Some(actual_rev.to_string()));
let path_source = PathSource::new(&self.checkout_path, &source_id,
self.config);
self.path_source = Some(path_source);
self.rev = Some(actual_rev);
self.path_source.as_mut().unwrap().update()
}
fn download(&mut self, id: &PackageId) -> CargoResult<Package> {
trace!("getting packages for package id `{}` from `{:?}`", id,
self.remote);
self.path_source.as_mut()
.expect("BUG: update() must be called before get()")
.download(id)
}
fn fingerprint(&self, _pkg: &Package) -> CargoResult<String> {
Ok(self.rev.as_ref().unwrap().to_string())
}
}
#[cfg(test)]
mod test {
use url::Url;
use super::ident;
use util::ToUrl;
#[test]
pub fn test_url_to_path_ident_with_path() {
let ident = ident(&url("https://github.com/carlhuda/cargo"));
assert!(ident.starts_with("cargo-"));
}
#[test]
pub fn test_url_to_path_ident_without_path() {
let ident = ident(&url("https://github.com"));
assert!(ident.starts_with("_empty-"));
}
#[test]
fn test_canonicalize_idents_by_stripping_trailing_url_slash() {
let ident1 = ident(&url("https://github.com/PistonDevelopers/piston/"));
let ident2 = ident(&url("https://github.com/PistonDevelopers/piston"));
assert_eq!(ident1, ident2);
}
#[test]
fn test_canonicalize_idents_by_lowercasing_github_urls() {
let ident1 = ident(&url("https://github.com/PistonDevelopers/piston"));
let ident2 = ident(&url("https://github.com/pistondevelopers/piston"));
assert_eq!(ident1, ident2);
}
#[test]
fn test_canonicalize_idents_by_stripping_dot_git() {
let ident1 = ident(&url("https://github.com/PistonDevelopers/piston"));
let ident2 = ident(&url("https://github.com/PistonDevelopers/piston.git"));
assert_eq!(ident1, ident2);
}
#[test]
fn test_canonicalize_idents_different_protocls() {
let ident1 = ident(&url("https://github.com/PistonDevelopers/piston"));
let ident2 = ident(&url("git://github.com/PistonDevelopers/piston"));
assert_eq!(ident1, ident2);
}
fn url(s: &str) -> Url {
s.to_url().unwrap()
}
}