-
Notifications
You must be signed in to change notification settings - Fork 202
/
Paths.scala
245 lines (220 loc) · 7.87 KB
/
Paths.scala
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
package bloop.io
import java.io.IOException
import java.nio.file.DirectoryNotEmptyException
import java.nio.file.FileSystems
import java.nio.file.FileVisitOption
import java.nio.file.FileVisitResult
import java.nio.file.FileVisitor
import java.nio.file.Files
import java.nio.file.NoSuchFileException
import java.nio.file.Path
import java.nio.file.SimpleFileVisitor
import java.nio.file.attribute.BasicFileAttributes
import java.nio.file.attribute.FileTime
import java.nio.file.{Paths => NioPaths}
import java.time.temporal.ChronoUnit
import java.util
import scala.collection.mutable
import dev.dirs.ProjectDirectories
object Paths {
private val projectDirectories = ProjectDirectories.from("", "", "bloop")
private def createDirFor(filepath: String): AbsolutePath =
AbsolutePath(Files.createDirectories(NioPaths.get(filepath)))
final val bloopCacheDir: AbsolutePath = createDirFor(projectDirectories.cacheDir)
final val bloopDataDir: AbsolutePath = createDirFor(projectDirectories.dataDir)
final val bloopLogsDir: AbsolutePath = createDirFor(bloopDataDir.resolve("logs").syntax)
final val bloopConfigDir: AbsolutePath = createDirFor(projectDirectories.configDir)
def getCacheDirectory(dirName: String): AbsolutePath = {
val dir = bloopCacheDir.resolve(dirName)
val dirPath = dir.underlying
if (!Files.exists(dirPath)) Files.createDirectories(dirPath)
else require(Files.isDirectory(dirPath), s"File '${dir.syntax}' is not a directory.")
dir
}
/**
* Get all files under `base` that match the pattern `pattern` up to depth `maxDepth`.
*
* Example:
* ```
* Paths.pathFilesUnder(src, "glob:**.{scala,java}")
* ```
*/
def pathFilesUnder(
base: AbsolutePath,
pattern: String,
maxDepth: Int = Int.MaxValue
): List[AbsolutePath] = {
val out = collection.mutable.ListBuffer.empty[AbsolutePath]
val matcher = FileSystems.getDefault.getPathMatcher(pattern)
val visitor = new FileVisitor[Path] {
def visitFile(file: Path, attributes: BasicFileAttributes): FileVisitResult = {
if (matcher.matches(file)) out += AbsolutePath(file)
FileVisitResult.CONTINUE
}
def visitFileFailed(
t: Path,
e: IOException
): FileVisitResult = FileVisitResult.CONTINUE
def preVisitDirectory(
directory: Path,
attributes: BasicFileAttributes
): FileVisitResult = FileVisitResult.CONTINUE
def postVisitDirectory(
directory: Path,
exception: IOException
): FileVisitResult = FileVisitResult.CONTINUE
}
val opts = util.EnumSet.of(FileVisitOption.FOLLOW_LINKS)
Files.walkFileTree(base.underlying, opts, maxDepth, visitor)
out.toList
}
// sealed abstract is an abomination for scala 2.12 to get private which actually works
sealed abstract case class AttributedPath(
path: AbsolutePath,
lastModifiedTime: FileTime,
size: Long
) {
def withPath(newPath: AbsolutePath): AttributedPath =
new AttributedPath(newPath, lastModifiedTime, size) {}
}
object AttributedPath {
def of(path: AbsolutePath, lastModifiedTime: FileTime, size: Long): AttributedPath = {
// this logic exists to maintain consistency between old and new JVMs. Older JVMs does not provide more than millisecond precision for `Instant`s by default
val truncatedFileTime =
FileTime.from(lastModifiedTime.toInstant.truncatedTo(ChronoUnit.MILLIS))
new AttributedPath(path, truncatedFileTime, size) {}
}
}
/**
* Get all files under `base` that match the pattern `pattern` up to depth `maxDepth`.
*
* The returned list of traversed files contains a last modified time attribute. This
* is a duplicated version of [[pathFilesUnder]] that returns the last modified time
* attribute for performance reasons, since the nio API exposes the attributed in the
* visitor and minimizes the number of underlying file system calls.
*
* Example:
* ```
* Paths.getAll(src, "glob:**.{scala,java}")
* ```
*/
def attributedPathFilesUnder(
base: AbsolutePath,
pattern: String,
logger: xsbti.Logger,
maxDepth: Int = Int.MaxValue,
ignoreVisitErrors: Boolean = false
): List[AttributedPath] = {
val out = collection.mutable.ListBuffer.empty[AttributedPath]
val matcher = FileSystems.getDefault.getPathMatcher(pattern)
val visitor = new FileVisitor[Path] {
def visitFile(file: Path, attributes: BasicFileAttributes): FileVisitResult = {
if (matcher.matches(file)) {
out += AttributedPath.of(
AbsolutePath(file),
attributes.lastModifiedTime(),
attributes.size()
)
}
FileVisitResult.CONTINUE
}
def visitFileFailed(t: Path, e: IOException): FileVisitResult = {
if (!ignoreVisitErrors) {
logger.error(() => s"Unexpected failure when visiting ${t}: '${e.getMessage}'")
logger.trace(() => e)
}
FileVisitResult.CONTINUE
}
def preVisitDirectory(
directory: Path,
attributes: BasicFileAttributes
): FileVisitResult = FileVisitResult.CONTINUE
def postVisitDirectory(
directory: Path,
exception: IOException
): FileVisitResult = FileVisitResult.CONTINUE
}
if (!base.exists) Nil
else {
val opts = util.EnumSet.of(FileVisitOption.FOLLOW_LINKS)
Files.walkFileTree(base.underlying, opts, maxDepth, visitor)
out.toList
}
}
/**
* Recursively delete `path` and all its content.
*
* Ignores any IO error that happens related to the deletion.
*
* @param path The path to delete
*/
def delete(path: AbsolutePath): Unit = {
try {
Files.walkFileTree(
path.underlying,
new SimpleFileVisitor[Path] {
override def visitFile(file: Path, attrs: BasicFileAttributes): FileVisitResult = {
Files.delete(file)
FileVisitResult.CONTINUE
}
override def postVisitDirectory(dir: Path, exc: IOException): FileVisitResult = {
try Files.delete(dir)
catch { case _: DirectoryNotEmptyException => () } // Happens sometimes on Windows?
FileVisitResult.CONTINUE
}
}
)
} catch { case _: IOException => () }
()
}
def isDirectoryEmpty(path: AbsolutePath, excludeDirs: Boolean): Boolean = {
var isEmpty: Boolean = true
import java.nio.file.NoSuchFileException
try {
Files.walkFileTree(
path.underlying,
new SimpleFileVisitor[Path] {
override def visitFile(file: Path, attrs: BasicFileAttributes): FileVisitResult = {
isEmpty = false
FileVisitResult.TERMINATE
}
override def preVisitDirectory(
directory: Path,
attributes: BasicFileAttributes
): FileVisitResult = {
if (excludeDirs || path.underlying == directory) FileVisitResult.CONTINUE
else {
isEmpty = false
FileVisitResult.TERMINATE
}
}
}
)
} catch {
case _: NoSuchFileException => isEmpty = true
}
isEmpty
}
/**
* Lists all top-level children of a path, none if the path doesn't exist.
*
* Use this function always instead of using `Files.list` directly and
* wrapping it with collection converters. `Files.list` returns a stream that
* it is never closed otherwise, creating a lot of open file handles to
* directories that can make bloop crash.
*/
def list(path: AbsolutePath): List[AbsolutePath] = {
val topLevelChildren = new mutable.ListBuffer[AbsolutePath]
val pathStream = Files.list(path.underlying)
try {
pathStream.forEach { path =>
topLevelChildren.+=(AbsolutePath(path))
}
} catch {
case _: NoSuchFileException => ()
} finally {
pathStream.close()
}
topLevelChildren.toList
}
}