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Ported the file search with pre-Java 7 API.

This commit is contained in:
Matej Urbas 2014-04-06 00:01:30 +01:00
parent fdfbaf99d4
commit c1c52d4802
1 changed files with 9 additions and 12 deletions
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21
util/complete/src/main/scala/sbt/complete/Parsers.scala
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@ -7,7 +7,6 @@ package sbt.complete
import java.io.File
import java.net.URI
import java.lang.Character.{getType, MATH_SYMBOL, OTHER_SYMBOL, DASH_PUNCTUATION, OTHER_PUNCTUATION, MODIFIER_SYMBOL, CURRENCY_SYMBOL}
import java.nio.file.{Files, Path}
/** Provides standard implementations of commonly useful [[Parser]]s. */
trait Parsers
@ -129,31 +128,29 @@ trait Parsers
/** Returns true if `c` is an ASCII letter or digit. */
def alphanum(c: Char) = ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9')
class FileExamples(base: Path, prefix: String = "") extends SourceOfExamples {
private val prefixPath: String = "." + File.separator + prefix
class FileExamples(base: File, prefix: String = "") extends SourceOfExamples {
private val relativizedPrefix: String = "." + File.separator + prefix
override def apply(): Iterable[String] = files(base).map(base.relativize).map(_.toString.substring(prefix.length))
override def apply(): Iterable[String] = files(base).map(_.toString.substring(relativizedPrefix.length))
override def withAddedPrefix(addedPrefix: String): FileExamples = new FileExamples(base, prefix + addedPrefix)
protected def fileStartsWithPrefix(path: Path): Boolean = path.toString.startsWith(prefixPath)
protected def fileStartsWithPrefix(path: File): Boolean = path.toString.startsWith(relativizedPrefix)
protected def directoryStartsWithPrefix(path: Path): Boolean = {
protected def directoryStartsWithPrefix(path: File): Boolean = {
val pathString = path.toString
pathString.startsWith(prefixPath) || prefixPath.startsWith(pathString)
pathString.startsWith(relativizedPrefix) || relativizedPrefix.startsWith(pathString)
}
protected def files(directory: Path): Iterable[Path] = {
import scala.collection.JavaConversions._
val subPathStream = Files.newDirectoryStream(directory).toStream
val (subDirectories, filesOnly) = subPathStream.partition(path => Files.isDirectory(path))
protected def files(directory: File): Iterable[File] = {
val (subDirectories, filesOnly) = directory.listFiles().toStream.partition(_.isDirectory)
filesOnly.filter(fileStartsWithPrefix) ++ subDirectories.filter(directoryStartsWithPrefix).flatMap(files)
}
}
def fileParser(base: File, maxNumberOfExamples: Int = 25): Parser[File] =
OptSpace ~> StringBasic
.examples(new FileExamples(base.toPath), maxNumberOfExamples)
.examples(new FileExamples(base), maxNumberOfExamples)
.map(new File(_))
/** Parses a port number. Currently, this accepts any integer and presents a tab completion suggestion of `<port>`. */