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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
|
package cbt
import java.io._
import java.lang.reflect.InvocationTargetException
import java.net._
import java.nio.charset.StandardCharsets
import java.nio.file._
import java.nio.file.attribute.FileTime
import javax.tools._
import java.security._
import java.util.{Set=>_,Map=>_,List=>_,_}
import javax.xml.bind.annotation.adapters.HexBinaryAdapter
// CLI interop
case class ExitCode(integer: Int)
object ExitCode{
val Success = ExitCode(0)
val Failure = ExitCode(1)
}
object CatchTrappedExitCode{
def unapply(e: Throwable): Option[ExitCode] = {
Option(e) flatMap {
case i: InvocationTargetException => unapply(i.getTargetException)
case e if TrapSecurityManager.isTrappedExit(e) => Some( ExitCode(TrapSecurityManager.exitCode(e)) )
case _ => None
}
}
}
class BaseLib{
def realpath(name: File) = new File(java.nio.file.Paths.get(name.getAbsolutePath).normalize.toString)
}
class Stage1Lib( val logger: Logger ) extends BaseLib{
lib =>
implicit val implicitLogger: Logger = logger
def libMajorVersion(libFullVersion: String) = libFullVersion.split("\\.").take(2).mkString(".")
// ========== file system / net ==========
def array2hex(padTo: Int, array: Array[Byte]): String = {
val hex = new java.math.BigInteger(1, array).toString(16)
("0" * (padTo-hex.size)) ++ hex
}
def md5( bytes: Array[Byte] ): String = array2hex(32, MessageDigest.getInstance("MD5").digest(bytes)).toLowerCase
def sha1( bytes: Array[Byte] ): String = array2hex(40, MessageDigest.getInstance("SHA-1").digest(bytes)).toLowerCase
def red(string: String) = scala.Console.RED++string++scala.Console.RESET
def blue(string: String) = scala.Console.BLUE++string++scala.Console.RESET
def green(string: String) = scala.Console.GREEN++string++scala.Console.RESET
def write(file: File, content: String, options: OpenOption*): File = Stage0Lib.write(file, content, options:_*)
def download(url: URL, target: File, sha1: Option[String]): Boolean = {
if( target.exists ){
logger.resolver(green("found ") ++ url.string)
true
} else {
val incomplete = ( target ++ ".incomplete" ).toPath;
val connection = Stage0Lib.openConnectionConsideringProxy(url)
if(connection.getResponseCode != HttpURLConnection.HTTP_OK){
logger.resolver(blue("not found: ") ++ url.string)
false
} else {
System.err.println(blue("downloading ") ++ url.string)
logger.resolver(blue("to ") ++ target.string)
target.getParentFile.mkdirs
val stream = connection.getInputStream
try{
Files.copy(stream, incomplete, StandardCopyOption.REPLACE_EXISTING)
} finally {
stream.close()
}
sha1.foreach{
hash =>
val expected = hash.toLowerCase
val actual = this.sha1(Files.readAllBytes(incomplete))
assert( expected == actual, s"$expected == $actual" )
logger.resolver( green("verified") ++ " checksum for " ++ target.string)
}
Files.move(incomplete, target.toPath, StandardCopyOption.REPLACE_EXISTING, StandardCopyOption.ATOMIC_MOVE);
true
}
}
}
def listFilesRecursive(f: File): Seq[File] = {
f +: (
if( f.isDirectory ) f.listFiles.flatMap(listFilesRecursive).toVector else Seq[File]()
)
}
// ========== compilation / execution ==========
def runMain( cls: String, args: Seq[String], classLoader: ClassLoader, fakeInstance: Boolean = false ): ExitCode = {
import java.lang.reflect.Modifier
logger.lib(s"Running $cls.main($args) with classLoader: " ++ classLoader.toString)
trapExitCode{
val c = classLoader.loadClass(cls)
val m = c.getMethod( "main", classOf[Array[String]] )
val instance =
if(!fakeInstance) null else c.newInstance
assert(
fakeInstance || (m.getModifiers & java.lang.reflect.Modifier.STATIC) > 0,
"Cannot run non-static method " ++ cls+".main"
)
m.invoke( instance, args.toArray.asInstanceOf[AnyRef] )
ExitCode.Success
}
}
/** shows an interactive dialogue in the shell asking the user to pick one of many choices */
def pickOne[T]( msg: String, choices: Seq[T] )( show: T => String ): Option[T] = {
if(choices.size == 0) None else if(choices.size == 1) Some(choices.head) else {
Option(System.console).map{
console =>
val indexedChoices: Map[Int, T] = choices.zipWithIndex.toMap.mapValues(_+1).map(_.swap)
System.err.println(
indexedChoices.map{ case (index,choice) => s"[${index}] "++show(choice)}.mkString("\n")
)
val range = s"1 - ${indexedChoices.size}"
System.err.println()
System.err.println( msg ++ " [" ++ range ++ "] " )
val answer = console.readLine()
val choice = try{
Some(Integer.parseInt(answer))
}catch{
case e:java.lang.NumberFormatException => None
}
choice.flatMap(indexedChoices.get).orElse{
System.err.println("Not in range "++range)
None
}
}.getOrElse{
System.err.println("System.console() == null. Use `cbt direct <task>` or see https://github.com/cvogt/cbt/issues/236")
None
}
}
}
/** interactively pick one main class */
def runClass( mainClasses: Seq[Class[_]] ): Option[Class[_]] = {
pickOne( "Which one do you want to run?", mainClasses )( _.toString )
}
def mainClasses( targetDirectory: File, classLoader : ClassLoader ): Seq[Class[_]] = {
val arrayClass = classOf[Array[String]]
val unitClass = classOf[Unit]
listFilesRecursive(targetDirectory)
.filter(_.isFile)
.map(_.getPath)
.collect{
// no $ to avoid inner classes
case path if !path.contains("$") && path.endsWith(".class") =>
classLoader.loadClass(
path
.stripSuffix(".class")
.stripPrefix(targetDirectory.getPath)
.stripPrefix(File.separator) // 1 for the slash
.replace(File.separator, ".")
)
}.filter(
_.getDeclaredMethods().exists( m =>
m.getName == "main"
&& m.getParameterTypes.toList == List(arrayClass)
&& m.getReturnType == unitClass
)
)
}
implicit class ClassLoaderExtensions(classLoader: ClassLoader){
def canLoad(className: String) = {
try{
classLoader.loadClass(className)
true
} catch {
case e: ClassNotFoundException => false
}
}
}
def needsUpdate( sourceFiles: Seq[File], statusFile: File ) = {
val lastCompile = statusFile.lastModified
sourceFiles.filter(_.lastModified > lastCompile).nonEmpty
}
def compile(
cbtHasChanged: Boolean,
needsRecompile: Boolean,
files: Seq[File],
compileTarget: File,
statusFile: File,
classpath: ClassPath,
mavenCache: File,
scalacOptions: Seq[String] = Seq(),
classLoaderCache: ClassLoaderCache,
zincVersion: String,
scalaVersion: String
): Option[File] = {
val cp = classpath.string
if(classpath.files.isEmpty)
throw new Exception("Trying to compile with empty classpath. Source files: " ++ files.toString)
if( files.isEmpty ){
None
}else{
if( needsRecompile ){
def Resolver(urls: URL*) = MavenResolver(cbtHasChanged, mavenCache, urls: _*)
val zinc = Resolver(mavenCentral).bindOne(MavenDependency("com.typesafe.zinc","zinc", zincVersion))
val zincDeps = zinc.transitiveDependencies
val sbtInterface =
zincDeps
.collect{ case d @
BoundMavenDependency(
_, _, MavenDependency( "com.typesafe.sbt", "sbt-interface", _, Classifier.none), _
) => d
}
.headOption
.getOrElse( throw new Exception(s"cannot find sbt-interface in zinc $zincVersion dependencies: "++zincDeps.toString) )
.jar
val compilerInterface =
zincDeps
.collect{ case d @
BoundMavenDependency(
_, _, MavenDependency( "com.typesafe.sbt", "compiler-interface", _, Classifier.sources), _
) => d
}
.headOption
.getOrElse( throw new Exception(s"cannot find compiler-interface in zinc $zincVersion dependencies: "++zincDeps.toString) )
.jar
val scalaLibrary = Resolver(mavenCentral).bindOne(MavenDependency("org.scala-lang","scala-library",scalaVersion)).jar
val scalaReflect = Resolver(mavenCentral).bindOne(MavenDependency("org.scala-lang","scala-reflect",scalaVersion)).jar
val scalaCompiler = Resolver(mavenCentral).bindOne(MavenDependency("org.scala-lang","scala-compiler",scalaVersion)).jar
val start = System.currentTimeMillis
val _class = "com.typesafe.zinc.Main"
val dualArgs =
Seq(
"-scala-compiler", scalaCompiler.toString,
"-scala-library", scalaLibrary.toString,
"-sbt-interface", sbtInterface.toString,
"-compiler-interface", compilerInterface.toString,
"-scala-extra", scalaReflect.toString,
"-d", compileTarget.toString
)
val singleArgs = scalacOptions.map( "-S" ++ _ )
val code =
redirectOutToErr{
System.err.println("Compiling to " ++ compileTarget.toString)
try{
lib.runMain(
_class,
dualArgs ++ singleArgs ++ Seq(
"-cp", cp // let's put cp last. It so long
) ++ files.map(_.toString),
zinc.classLoader(classLoaderCache)
)
} catch {
case e: Exception =>
System.err.println(red("The Scala compiler crashed. Try running it by hand:"))
System.out.println(s"""
java -cp \\
${zinc.classpath.strings.mkString(":\\\n")} \\
\\
${_class} \\
\\
${dualArgs.grouped(2).map(_.mkString(" ")).mkString(" \\\n")} \\
\\
${singleArgs.mkString(" \\\n")} \\
\\
-cp \\
${classpath.strings.mkString(":\\\n")} \\
\\
${files.sorted.mkString(" \\\n")}
"""
)
redirectOutToErr( e.printStackTrace )
ExitCode.Failure
}
}
if(code == ExitCode.Success){
// write version and when last compilation started so we can trigger
// recompile if cbt version changed or newer source files are seen
write(statusFile, "")//cbtVersion.getBytes)
Files.setLastModifiedTime(statusFile.toPath, FileTime.fromMillis(start) )
} else {
System.exit(code.integer) // FIXME: let's find a better solution for error handling. Maybe a monad after all.
}
}
Some( compileTarget )
}
}
def redirectOutToErr[T](code: => T): T = {
val ( out, err ) = try{
// trying nailgun's System.our/err wrapper
val field = System.out.getClass.getDeclaredField("streams")
assert(System.out.getClass.getName == "com.martiansoftware.nailgun.ThreadLocalPrintStream")
assert(System.err.getClass.getName == "com.martiansoftware.nailgun.ThreadLocalPrintStream")
field.setAccessible(true)
val out = field.get(System.out).asInstanceOf[ThreadLocal[PrintStream]]
val err = field.get(System.err).asInstanceOf[ThreadLocal[PrintStream]]
( out, err )
} catch {
case e: NoSuchFieldException =>
// trying cbt's System.our/err wrapper
val field = classOf[FilterOutputStream].getDeclaredField("out")
field.setAccessible(true)
val outStream = field.get(System.out)
val errStream = field.get(System.err)
assert(outStream.getClass.getName == "cbt.ThreadLocalOutputStream")
assert(errStream.getClass.getName == "cbt.ThreadLocalOutputStream")
val field2 = outStream.getClass.getDeclaredField("threadLocal")
field2.setAccessible(true)
val out = field2.get(outStream).asInstanceOf[ThreadLocal[PrintStream]]
val err = field2.get(errStream).asInstanceOf[ThreadLocal[PrintStream]]
( out, err )
}
val oldOut: PrintStream = out.get
out.set( err.get: PrintStream )
val res = code
out.set( oldOut )
res
}
def trapExitCode( code: => ExitCode ): ExitCode = {
val trapExitCodeBefore = TrapSecurityManager.trapExitCode().get
try{
TrapSecurityManager.trapExitCode().set(true)
code
} catch {
case CatchTrappedExitCode(exitCode) =>
logger.stage1(s"caught exit code $exitCode")
exitCode
} finally {
TrapSecurityManager.trapExitCode().set(trapExitCodeBefore)
}
}
def ScalaDependency(
groupId: String, artifactId: String, version: String, classifier: Classifier = Classifier.none,
scalaMajorVersion: String
) =
MavenDependency(
groupId, artifactId ++ "_" ++ scalaMajorVersion, version, classifier
)
def cacheOnDisk[T]
( cbtHasChanged: Boolean, cacheFile: File )
( deserialize: String => T )
( serialize: T => String )
( compute: => Seq[T] ) = {
if(!cbtHasChanged && cacheFile.exists){
import collection.JavaConversions._
Files
.readAllLines( cacheFile.toPath, StandardCharsets.UTF_8 )
.toStream
.map(deserialize)
} else {
val result = compute
val string = result.map(serialize).mkString("\n")
write(cacheFile, string)
result
}
}
def dependencyTreeRecursion(root: Dependency, indent: Int = 0): String = (
( " " * indent )
++ (if(root.needsUpdate) red(root.show) else root.show)
++ root.dependencies.map( d =>
"\n" ++ dependencyTreeRecursion(d,indent + 1)
).mkString
)
def transitiveDependencies(dependency: Dependency): Seq[Dependency] = {
def linearize(deps: Seq[Dependency]): Seq[Dependency] = {
// Order is important here in order to generate the correct lineraized dependency order for EarlyDependencies
// (and maybe this as well in case we want to get rid of MultiClassLoader)
try{
if(deps.isEmpty) deps else ( deps ++ linearize(deps.flatMap(_.dependencies)) )
} catch{
case e: Exception => throw new Exception(dependency.show, e)
}
}
// FIXME: this is probably wrong too eager.
// We should consider replacing versions during traversals already
// not just replace after traversals, because that could mean we
// pulled down dependencies current versions don't even rely
// on anymore.
val deps: Seq[Dependency] = linearize(dependency.dependencies).reverse.distinct.reverse
val hasInfo: Seq[Dependency with ArtifactInfo] = deps.collect{ case d:Dependency with ArtifactInfo => d }
val noInfo: Seq[Dependency] = deps.filter{
case _:Dependency with ArtifactInfo => false
case _ => true
}
noInfo ++ BoundMavenDependency.updateOutdated( hasInfo ).reverse.distinct
}
def actual(current: Dependency, latest: Map[(String,String),Dependency]) = current match {
case d: ArtifactInfo => latest((d.groupId,d.artifactId))
case d => d
}
def classLoaderRecursion( dependency: Dependency, latest: Map[(String,String),Dependency], cache: ClassLoaderCache ): ClassLoader = {
// FIXME: shouldn't we be using KeyLockedLazyCache instead of hashmap directly here?
val d = dependency
val dependencies = dependency.dependencies
def dependencyClassLoader( latest: Map[(String,String),Dependency], cache: ClassLoaderCache ): ClassLoader = {
if( dependency.dependencies.isEmpty ){
// wrap for caching
new cbt.URLClassLoader( ClassPath(), ClassLoader.getSystemClassLoader().getParent() )
} else if( dependencies.size == 1 ){
classLoaderRecursion( dependencies.head, latest, cache )
} else{
val cp = d.dependencyClasspath.string
if( dependencies.exists(_.needsUpdate) && cache.cache.containsKey(cp) ){
cache.cache.remove(cp)
}
def cl = new MultiClassLoader( dependencies.map( classLoaderRecursion(_, latest, cache) ) )
if(d.isInstanceOf[BuildInterface])
cl // Don't cache builds right now. We need to fix invalidation first.
else
cache.cache.get( cp, cl )
}
}
val a = actual( dependency, latest )
def cl = new cbt.URLClassLoader( a.exportedClasspath, dependencyClassLoader(latest, cache) )
if(d.isInstanceOf[BuildInterface])
cl
else
cache.cache.get( a.classpath.string, cl ).asInstanceOf[ClassLoader]
}
}
|