author | wenzelm |
Wed, 12 Sep 2012 16:54:24 +0200 | |
changeset 49334 | dbc169ddd404 |
parent 48923 | a2df77fcf1eb |
child 49449 | ffc06b54cb22 |
permissions | -rw-r--r-- |
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/* Title: Pure/System/isabelle_system.scala |
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Author: Makarius |
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Fundamental Isabelle system environment: quasi-static module with |
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optional init operation. |
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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.io.{InputStream, OutputStream, File => JFile, BufferedReader, InputStreamReader, |
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BufferedWriter, OutputStreamWriter, IOException, FileInputStream, BufferedInputStream} |
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import java.awt.{GraphicsEnvironment, Font} |
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import java.awt.font.TextAttribute |
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import scala.io.Source |
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import scala.util.matching.Regex |
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import scala.collection.mutable |
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object Isabelle_System |
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{ |
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/** implicit state **/ |
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private case class State(standard_system: Standard_System, settings: Map[String, String]) |
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@volatile private var _state: Option[State] = None |
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private def check_state(): State = |
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{ |
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if (_state.isEmpty) init() // unsynchronized check |
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_state.get |
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} |
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def standard_system: Standard_System = check_state().standard_system |
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def settings: Map[String, String] = check_state().settings |
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/* |
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isabelle_home precedence: |
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(1) this_isabelle_home as explicit argument |
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(2) ISABELLE_HOME process environment variable (e.g. inherited from running isabelle tool) |
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(3) isabelle.home system property (e.g. via JVM application boot process) |
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*/ |
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def init(this_isabelle_home: String = null) = synchronized { |
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if (_state.isEmpty) { |
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import scala.collection.JavaConversions._ |
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val standard_system = new Standard_System |
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val settings = |
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{ |
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val env0 = sys.env + ("ISABELLE_JDK_HOME" -> standard_system.this_jdk_home()) |
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val user_home = System.getProperty("user.home") |
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val env = |
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if (user_home == null || env0.isDefinedAt("HOME")) env0 |
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else env0 + ("HOME" -> user_home) |
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val isabelle_home = |
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if (this_isabelle_home != null) this_isabelle_home |
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else |
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env.get("ISABELLE_HOME") match { |
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case None | Some("") => |
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val path = System.getProperty("isabelle.home") |
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if (path == null || path == "") error("Unknown Isabelle home directory") |
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else path |
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case Some(path) => path |
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} |
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File.with_tmp_file("settings") { dump => |
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val shell_prefix = |
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if (Platform.is_windows) List(standard_system.platform_root + "\\bin\\bash", "-l") |
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else Nil |
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val cmdline = |
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shell_prefix ::: List(isabelle_home + "/bin/isabelle", "getenv", "-d", dump.toString) |
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val (output, rc) = Standard_System.raw_exec(null, env, true, cmdline: _*) |
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if (rc != 0) error(output) |
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val entries = |
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(for (entry <- File.read(dump) split "\0" if entry != "") yield { |
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val i = entry.indexOf('=') |
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if (i <= 0) (entry -> "") |
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else (entry.substring(0, i) -> entry.substring(i + 1)) |
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}).toMap |
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entries + ("PATH" -> entries("PATH_JVM")) - "PATH_JVM" |
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} |
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} |
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_state = Some(State(standard_system, settings)) |
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} |
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} |
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/* getenv */ |
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def getenv(name: String): String = settings.getOrElse(name, "") |
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def getenv_strict(name: String): String = |
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val value = getenv(name) |
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if (value != "") value else error("Undefined environment variable: " + name) |
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} |
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/** file-system operations **/ |
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/* path specifications */ |
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def standard_path(path: Path): String = path.expand.implode |
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def platform_path(path: Path): String = standard_system.jvm_path(standard_path(path)) |
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def platform_file(path: Path): JFile = new JFile(platform_path(path)) |
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def platform_file_url(raw_path: Path): String = |
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val path = raw_path.expand |
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require(path.is_absolute) |
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val s = platform_path(path).replaceAll(" ", "%20") |
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if (!Platform.is_windows) "file://" + s |
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else if (s.startsWith("\\\\")) "file:" + s.replace('\\', '/') |
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else "file:///" + s.replace('\\', '/') |
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} |
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def posix_path(jvm_path: String): String = standard_system.posix_path(jvm_path) |
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/* source files of Isabelle/ML bootstrap */ |
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def source_file(path: Path): Option[Path] = |
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{ |
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def check(p: Path): Option[Path] = if (p.is_file) Some(p) else None |
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if (path.is_absolute || path.is_current) check(path) |
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else { |
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check(Path.explode("~~/src/Pure") + path) orElse |
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(if (getenv("ML_SOURCES") == "") None else check(Path.explode("$ML_SOURCES") + path)) |
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} |
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} |
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/** external processes **/ |
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/* plain execute */ |
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def execute_env(cwd: JFile, env: Map[String, String], redirect: Boolean, args: String*): Process = |
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{ |
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val cmdline = |
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if (Platform.is_windows) List(standard_system.platform_root + "\\bin\\env.exe") ++ args |
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else args |
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val env1 = if (env == null) settings else settings ++ env |
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Standard_System.raw_execute(cwd, env1, redirect, cmdline: _*) |
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} |
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def execute(redirect: Boolean, args: String*): Process = |
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execute_env(null, null, redirect, args: _*) |
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/* managed process */ |
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class Managed_Process(cwd: JFile, env: Map[String, String], redirect: Boolean, args: String*) |
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{ |
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private val params = |
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List(standard_path(Path.explode("~~/lib/scripts/process")), "group", "-", "no_script") |
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private val proc = execute_env(cwd, env, redirect, (params ++ args):_*) |
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|
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// channels |
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169 |
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val stdin: BufferedWriter = |
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new BufferedWriter(new OutputStreamWriter(proc.getOutputStream, Standard_System.charset)) |
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|
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val stdout: BufferedReader = |
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new BufferedReader(new InputStreamReader(proc.getInputStream, Standard_System.charset)) |
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|
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val stderr: BufferedReader = |
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new BufferedReader(new InputStreamReader(proc.getErrorStream, Standard_System.charset)) |
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178 |
|
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|
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// signals |
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181 |
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private val pid = stdout.readLine |
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183 |
|
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private def kill(signal: String): Boolean = |
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{ |
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execute(true, "kill", "-" + signal, "-" + pid).waitFor |
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execute(true, "kill", "-0", "-" + pid).waitFor == 0 |
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} |
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|
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private def multi_kill(signal: String): Boolean = |
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{ |
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var running = true |
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var count = 10 |
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while (running && count > 0) { |
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if (kill(signal)) { |
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Thread.sleep(100) |
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count -= 1 |
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} |
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else running = false |
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} |
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running |
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} |
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203 |
|
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def interrupt() { multi_kill("INT") } |
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def terminate() { multi_kill("INT") && multi_kill("TERM") && kill("KILL"); proc.destroy } |
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|
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|
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// JVM shutdown hook |
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|
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private val shutdown_hook = new Thread { override def run = terminate() } |
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|
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try { Runtime.getRuntime.addShutdownHook(shutdown_hook) } |
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catch { case _: IllegalStateException => } |
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|
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private def cleanup() = |
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try { Runtime.getRuntime.removeShutdownHook(shutdown_hook) } |
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catch { case _: IllegalStateException => } |
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218 |
|
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|
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220 |
/* result */ |
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221 |
|
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def join: Int = { val rc = proc.waitFor; cleanup(); rc } |
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223 |
} |
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224 |
|
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225 |
|
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226 |
/* bash */ |
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|
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def bash_env(cwd: JFile, env: Map[String, String], script: String): (String, String, Int) = |
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{ |
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File.with_tmp_file("isabelle_script") { script_file => |
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File.write(script_file, script) |
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val proc = new Managed_Process(cwd, env, false, "bash", posix_path(script_file.getPath)) |
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233 |
|
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proc.stdin.close |
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val (_, stdout) = Simple_Thread.future("bash_stdout") { File.read(proc.stdout) } |
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val (_, stderr) = Simple_Thread.future("bash_stderr") { File.read(proc.stderr) } |
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237 |
|
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238 |
val rc = |
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try { proc.join } |
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catch { case e: InterruptedException => Thread.interrupted; proc.terminate; 130 } |
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(stdout.join, stderr.join, rc) |
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242 |
} |
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243 |
} |
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244 |
|
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def bash(script: String): (String, String, Int) = bash_env(null, null, script) |
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246 |
|
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247 |
|
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248 |
/* system tools */ |
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249 |
|
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250 |
def isabelle_tool(name: String, args: String*): (String, Int) = |
31498 | 251 |
{ |
43669 | 252 |
Path.split(getenv_strict("ISABELLE_TOOLS")).find { dir => |
48373 | 253 |
val file = (dir + Path.basic(name)).file |
42124 | 254 |
try { |
255 |
file.isFile && file.canRead && file.canExecute && |
|
256 |
!name.endsWith("~") && !name.endsWith(".orig") |
|
257 |
} |
|
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258 |
catch { case _: SecurityException => false } |
34200 | 259 |
} match { |
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260 |
case Some(dir) => |
43669 | 261 |
val file = standard_path(dir + Path.basic(name)) |
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Standard_System.process_output(execute(true, (List(file) ++ args): _*)) |
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case None => ("Unknown Isabelle tool: " + name, 2) |
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264 |
} |
28063 | 265 |
} |
266 |
||
267 |
||
32450 | 268 |
|
31796 | 269 |
/** Isabelle resources **/ |
270 |
||
32328 | 271 |
/* components */ |
272 |
||
43669 | 273 |
def components(): List[Path] = |
274 |
Path.split(getenv_strict("ISABELLE_COMPONENTS")) |
|
32328 | 275 |
|
276 |
||
29152 | 277 |
/* find logics */ |
278 |
||
48503 | 279 |
def find_logics_dirs(): List[Path] = |
31498 | 280 |
{ |
48503 | 281 |
val ml_ident = Path.explode("$ML_IDENTIFIER").expand |
282 |
Path.split(getenv_strict("ISABELLE_PATH")).map(_ + ml_ident) |
|
29152 | 283 |
} |
29570 | 284 |
|
48503 | 285 |
def find_logics(): List[String] = |
286 |
(for { |
|
287 |
dir <- find_logics_dirs() |
|
288 |
files = dir.file.listFiles() if files != null |
|
289 |
file <- files.toList if file.isFile } yield file.getName).sorted |
|
290 |
||
29570 | 291 |
|
34024 | 292 |
/* fonts */ |
293 |
||
43484 | 294 |
def get_font(family: String = "IsabelleText", size: Int = 1, bold: Boolean = false): Font = |
295 |
new Font(family, if (bold) Font.BOLD else Font.PLAIN, size) |
|
37367 | 296 |
|
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297 |
def install_fonts() |
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298 |
{ |
37367 | 299 |
val ge = GraphicsEnvironment.getLocalGraphicsEnvironment() |
49334 | 300 |
for (font <- Path.split(getenv_strict("ISABELLE_FONTS"))) { |
48373 | 301 |
ge.registerFont(Font.createFont(Font.TRUETYPE_FONT, font.file)) |
49334 | 302 |
|
303 |
val stream = new BufferedInputStream(new FileInputStream(font.file)) |
|
304 |
try { javafx.scene.text.Font.loadFont(stream, 1.0) } |
|
305 |
finally { stream.close } |
|
306 |
} |
|
34024 | 307 |
} |
27919 | 308 |
} |