# HG changeset patch # User wenzelm # Date 1219316737 -7200 # Node ID 947cb8e3d3139737b09683a3d7d047cee47e6ca0 # Parent 68d40072e9e706db33e1a5a4ba0b262c389b4416 added get_setting; removed obsolete ISABELLE_HOME, ISABELLE_HOME_USER; added platform_path, which expands variables and performs basic cygwin conversion; diff -r 68d40072e9e7 -r 947cb8e3d313 src/Pure/Tools/isabelle_system.scala --- a/src/Pure/Tools/isabelle_system.scala Thu Aug 21 13:05:31 2008 +0200 +++ b/src/Pure/Tools/isabelle_system.scala Thu Aug 21 13:05:37 2008 +0200 @@ -2,11 +2,14 @@ ID: $Id$ Author: Makarius -Isabelle system support. +Isabelle system support: settings and path specifications. */ package isabelle +import java.util.regex.{Pattern, Matcher} +import java.io.File + object IsabelleSystem { @@ -14,13 +17,52 @@ class BadSetting(val name: String) extends Exception - private def strict_getenv(name: String) = { + def get_setting(name: String) = { val value = System.getenv(name) if (value == null || value == "") throw new BadSetting(name) else value } - def ISABELLE_HOME() = strict_getenv("ISABELLE_HOME_JVM") - def ISABELLE_HOME_USER() = strict_getenv("ISABELLE_HOME_USER_JVM") + + /* File path specifications */ + + private val cygdrive_pattern = Pattern.compile("/cygdrive/([a-zA-Z])($|/.*)") + + def platform_path(source_path: String) = { + val result_path = new StringBuilder + def init(path: String) = { + val cygdrive = cygdrive_pattern.matcher(path) + if (cygdrive.matches) { + result_path.setLength(0) + result_path.append(cygdrive.group(1)) + result_path.append(":") + result_path.append(File.separator) + cygdrive.group(2) + } + else if (path.startsWith("/")) { + result_path.setLength(0) + result_path.append(get_setting("ISABELLE_ROOT_JVM")) + path.substring(1) + } + else path + } + def append(path: String) = { + for (p <- init(path).split("/")) { + if (p != "") { + val len = result_path.length + if (len > 0 && result_path(len - 1) != File.separatorChar) + result_path.append(File.separator) + result_path.append(p) + } + } + } + for (p <- init(source_path).split("/")) { + if (p.startsWith("$")) append(get_setting(p.substring(1))) + else if (p == "~") append(get_setting("HOME")) + else if (p == "~~") append(get_setting("ISABELLE_HOME")) + else append(p) + } + result_path.toString + } }