author | wenzelm |
Tue, 17 Jul 2012 16:54:23 +0200 | |
changeset 48277 | f14e564fca1a |
parent 48027 | 69ba790960ba |
child 48359 | e544dbcdf097 |
permissions | -rw-r--r-- |
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/* Title: Pure/System/standard_system.scala |
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Module: PIDE |
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Author: Makarius |
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Standard system operations, with basic Cygwin/Posix compatibility. |
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*/ |
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package isabelle |
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import java.lang.System |
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import java.util.regex.Pattern |
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import java.util.Locale |
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import java.net.URL |
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import java.io.{BufferedWriter, OutputStreamWriter, FileOutputStream, BufferedOutputStream, |
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BufferedInputStream, InputStream, FileInputStream, BufferedReader, InputStreamReader, |
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File, FileFilter, IOException} |
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import java.nio.charset.Charset |
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import scala.io.Codec |
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import scala.util.matching.Regex |
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import scala.collection.mutable |
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object Standard_System |
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{ |
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/* UTF-8 charset */ |
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val charset_name: String = "UTF-8" |
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val charset: Charset = Charset.forName(charset_name) |
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def codec(): Codec = Codec(charset) |
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def string_bytes(s: String): Array[Byte] = s.getBytes(charset) |
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/* permissive UTF-8 decoding */ |
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// see also http://en.wikipedia.org/wiki/UTF-8#Description |
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// overlong encodings enable byte-stuffing |
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def decode_permissive_utf8(text: CharSequence): String = |
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{ |
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val buf = new java.lang.StringBuilder(text.length) |
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var code = -1 |
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var rest = 0 |
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def flush() |
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{ |
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if (code != -1) { |
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if (rest == 0 && Character.isValidCodePoint(code)) |
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buf.appendCodePoint(code) |
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else buf.append('\uFFFD') |
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code = -1 |
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rest = 0 |
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} |
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} |
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def init(x: Int, n: Int) |
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{ |
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flush() |
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code = x |
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rest = n |
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} |
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def push(x: Int) |
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{ |
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if (rest <= 0) init(x, -1) |
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else { |
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code <<= 6 |
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code += x |
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rest -= 1 |
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} |
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} |
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for (i <- 0 until text.length) { |
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val c = text.charAt(i) |
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if (c < 128) { flush(); buf.append(c) } |
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else if ((c & 0xC0) == 0x80) push(c & 0x3F) |
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else if ((c & 0xE0) == 0xC0) init(c & 0x1F, 1) |
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else if ((c & 0xF0) == 0xE0) init(c & 0x0F, 2) |
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else if ((c & 0xF8) == 0xF0) init(c & 0x07, 3) |
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} |
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flush() |
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buf.toString |
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} |
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private class Decode_Chars(decode: String => String, |
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buffer: Array[Byte], start: Int, end: Int) extends CharSequence |
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{ |
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def length: Int = end - start |
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def charAt(i: Int): Char = (buffer(start + i).asInstanceOf[Int] & 0xFF).asInstanceOf[Char] |
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def subSequence(i: Int, j: Int): CharSequence = |
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new Decode_Chars(decode, buffer, start + i, start + j) |
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|
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// toString with adhoc decoding: abuse of CharSequence interface |
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override def toString: String = decode(decode_permissive_utf8(this)) |
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} |
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def decode_chars(decode: String => String, |
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buffer: Array[Byte], start: Int, end: Int): CharSequence = |
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{ |
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require(0 <= start && start <= end && end <= buffer.length) |
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new Decode_Chars(decode, buffer, start, end) |
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} |
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/* basic file operations */ |
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def slurp(reader: BufferedReader): String = |
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{ |
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val output = new StringBuilder(100) |
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var c = -1 |
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while ({ c = reader.read; c != -1 }) output += c.toChar |
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reader.close |
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output.toString |
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} |
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def slurp(stream: InputStream): String = |
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slurp(new BufferedReader(new InputStreamReader(stream, charset))) |
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def read_file(file: File): String = slurp(new FileInputStream(file)) |
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def write_file(file: File, text: CharSequence) |
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{ |
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val writer = |
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new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset)) |
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try { writer.append(text) } |
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finally { writer.close } |
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} |
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def with_tmp_file[A](prefix: String)(body: File => A): A = |
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{ |
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val file = File.createTempFile(prefix, null) |
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file.deleteOnExit |
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try { body(file) } finally { file.delete } |
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} |
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// FIXME handle (potentially cyclic) directory graph |
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def find_files(start: File, ok: File => Boolean): List[File] = |
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{ |
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val files = new mutable.ListBuffer[File] |
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val filter = new FileFilter { def accept(entry: File) = entry.isDirectory || ok(entry) } |
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def find_entry(entry: File) |
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{ |
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if (ok(entry)) files += entry |
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if (entry.isDirectory) entry.listFiles(filter).foreach(find_entry) |
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} |
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find_entry(start) |
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files.toList |
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} |
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/* shell processes */ |
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def raw_execute(cwd: File, env: Map[String, String], redirect: Boolean, args: String*): Process = |
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{ |
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val cmdline = new java.util.LinkedList[String] |
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for (s <- args) cmdline.add(s) |
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154 |
|
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val proc = new ProcessBuilder(cmdline) |
34219 | 156 |
if (cwd != null) proc.directory(cwd) |
34202 | 157 |
if (env != null) { |
158 |
proc.environment.clear |
|
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for ((x, y) <- env) proc.environment.put(x, y) |
|
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} |
|
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proc.redirectErrorStream(redirect) |
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proc.start |
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} |
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164 |
|
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def process_output(proc: Process): (String, Int) = |
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{ |
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proc.getOutputStream.close |
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val output = slurp(proc.getInputStream) |
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val rc = |
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try { proc.waitFor } |
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finally { |
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proc.getInputStream.close |
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proc.getErrorStream.close |
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proc.destroy |
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Thread.interrupted |
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176 |
} |
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177 |
(output, rc) |
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178 |
} |
34258 | 179 |
|
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180 |
def raw_exec(cwd: File, env: Map[String, String], redirect: Boolean, args: String*) |
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: (String, Int) = process_output(raw_execute(cwd, env, redirect, args: _*)) |
39705 | 182 |
|
183 |
||
47998 | 184 |
/* cygwin_root */ |
185 |
||
186 |
def cygwin_root(): String = |
|
187 |
{ |
|
188 |
val cygwin_root1 = System.getenv("CYGWIN_ROOT") |
|
189 |
val cygwin_root2 = System.getProperty("cygwin.root") |
|
190 |
val root = |
|
191 |
if (cygwin_root1 != null && cygwin_root1 != "") cygwin_root1 |
|
192 |
else if (cygwin_root2 != null && cygwin_root2 != "") cygwin_root2 |
|
193 |
else error("Bad Cygwin installation: unknown root") |
|
194 |
||
195 |
val root_file = new File(root) |
|
196 |
if (!new File(root_file, "bin\\bash.exe").isFile || |
|
197 |
!new File(root_file, "bin\\env.exe").isFile || |
|
198 |
!new File(root_file, "bin\\tar.exe").isFile) |
|
199 |
error("Bad Cygwin installation: " + quote(root)) |
|
200 |
||
201 |
root |
|
202 |
} |
|
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203 |
} |
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|
204 |
|
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|
205 |
|
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206 |
class Standard_System |
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{ |
43664 | 208 |
/* platform_root */ |
209 |
||
47998 | 210 |
val platform_root = if (Platform.is_windows) Standard_System.cygwin_root() else "/" |
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|
211 |
|
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|
212 |
|
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|
213 |
/* jvm_path */ |
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|
214 |
|
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|
215 |
private val Cygdrive = new Regex("/cygdrive/([a-zA-Z])($|/.*)") |
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216 |
private val Named_Root = new Regex("//+([^/]*)(.*)") |
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|
217 |
|
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|
218 |
def jvm_path(posix_path: String): String = |
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219 |
if (Platform.is_windows) { |
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|
220 |
val result_path = new StringBuilder |
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|
221 |
val rest = |
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|
222 |
posix_path match { |
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|
223 |
case Cygdrive(drive, rest) => |
45072
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|
224 |
result_path ++= (drive.toUpperCase(Locale.ENGLISH) + ":" + File.separator) |
34201
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|
225 |
rest |
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|
226 |
case Named_Root(root, rest) => |
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|
227 |
result_path ++= File.separator |
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|
228 |
result_path ++= File.separator |
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changeset
|
229 |
result_path ++= root |
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|
230 |
rest |
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|
231 |
case path if path.startsWith("/") => |
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|
232 |
result_path ++= platform_root |
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|
233 |
path |
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wenzelm
parents:
diff
changeset
|
234 |
case path => path |
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wenzelm
parents:
diff
changeset
|
235 |
} |
43670
7f933761764b
prefer space_explode/split_lines as in Isabelle/ML;
wenzelm
parents:
43664
diff
changeset
|
236 |
for (p <- space_explode('/', rest) if p != "") { |
34201
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parents:
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changeset
|
237 |
val len = result_path.length |
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
238 |
if (len > 0 && result_path(len - 1) != File.separatorChar) |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
239 |
result_path += File.separatorChar |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
240 |
result_path ++= p |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
241 |
} |
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
242 |
result_path.toString |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
243 |
} |
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
244 |
else posix_path |
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
245 |
|
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
246 |
|
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
247 |
/* posix_path */ |
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
248 |
|
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
249 |
private val Platform_Root = new Regex("(?i)" + |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
250 |
Pattern.quote(platform_root) + """(?:\\+|\z)(.*)""") |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
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parents:
diff
changeset
|
251 |
|
c95dcd12f48a
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wenzelm
parents:
diff
changeset
|
252 |
private val Drive = new Regex("""([a-zA-Z]):\\*(.*)""") |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
253 |
|
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
254 |
def posix_path(jvm_path: String): String = |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
255 |
if (Platform.is_windows) { |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
256 |
jvm_path.replace('/', '\\') match { |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
257 |
case Platform_Root(rest) => "/" + rest.replace('\\', '/') |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
258 |
case Drive(letter, rest) => |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
259 |
"/cygdrive/" + letter.toLowerCase(Locale.ENGLISH) + |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
260 |
(if (rest == "") "" else "/" + rest.replace('\\', '/')) |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
261 |
case path => path.replace('\\', '/') |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
262 |
} |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
263 |
} |
c95dcd12f48a
separate Standard_System (Cygwin/Posix compatibility) vs. Isabelle_System (settings environment etc.);
wenzelm
parents:
diff
changeset
|
264 |
else jvm_path |
36193
067a01827fca
improved ISABELLE_JAVA, based on THIS_JAVA of the actually running JVM;
wenzelm
parents:
36136
diff
changeset
|
265 |
|
067a01827fca
improved ISABELLE_JAVA, based on THIS_JAVA of the actually running JVM;
wenzelm
parents:
36136
diff
changeset
|
266 |
|
47113
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
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diff
changeset
|
267 |
/* JDK home of running JVM */ |
36193
067a01827fca
improved ISABELLE_JAVA, based on THIS_JAVA of the actually running JVM;
wenzelm
parents:
36136
diff
changeset
|
268 |
|
47113
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
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45673
diff
changeset
|
269 |
def this_jdk_home(): String = |
36193
067a01827fca
improved ISABELLE_JAVA, based on THIS_JAVA of the actually running JVM;
wenzelm
parents:
36136
diff
changeset
|
270 |
{ |
067a01827fca
improved ISABELLE_JAVA, based on THIS_JAVA of the actually running JVM;
wenzelm
parents:
36136
diff
changeset
|
271 |
val java_home = System.getProperty("java.home") |
47113
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
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45673
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changeset
|
272 |
val home = new File(java_home) |
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
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45673
diff
changeset
|
273 |
val parent = home.getParent |
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
parents:
45673
diff
changeset
|
274 |
val jdk_home = |
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
parents:
45673
diff
changeset
|
275 |
if (home.getName == "jre" && parent != null && |
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
parents:
45673
diff
changeset
|
276 |
(new File(new File(parent, "bin"), "javac")).exists) parent |
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
parents:
45673
diff
changeset
|
277 |
else java_home |
b5a5662528fb
ISABELLE_JDK_HOME settings variable points to JDK with javac and jar (not just JRE);
wenzelm
parents:
45673
diff
changeset
|
278 |
posix_path(jdk_home) |
36193
067a01827fca
improved ISABELLE_JAVA, based on THIS_JAVA of the actually running JVM;
wenzelm
parents:
36136
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changeset
|
279 |
} |
34201
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diff
changeset
|
280 |
} |