io + os debug luajava-The following is not yet implemented: -
- os --
See the sample midlet int src/sample/SampleMIDlet for an example. +
+ src/core/org/luaj/lib/OsLib.java ++ +A slightly more complete version for J2SE is in: +
+ src/j2se/org/luaj/lib/j2se/J2seOsLib.java ++ +Time is a represented as number of milliseconds since the epoch, +and most time and date formatting, locales, and other features +are not implemented. +
diff --git a/src/core/org/luaj/lib/OsLib.java b/src/core/org/luaj/lib/OsLib.java
new file mode 100644
index 00000000..52c243eb
--- /dev/null
+++ b/src/core/org/luaj/lib/OsLib.java
@@ -0,0 +1,354 @@
+/*******************************************************************************
+* Copyright (c) 2009 LuaJ. All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+******************************************************************************/
+package org.luaj.lib;
+
+import java.io.IOException;
+
+import org.luaj.vm.LFunction;
+import org.luaj.vm.LString;
+import org.luaj.vm.LTable;
+import org.luaj.vm.LValue;
+import org.luaj.vm.LuaState;
+
+/**
+ * Base implementation of OsLib, with simplified stub functions
+ * for library functions that cannot be implemented uniformly
+ * on J2se and J2me.
+ *
+ * This can be installed as-is on either platform, or extended
+ * and refined to be used in a complete J2se implementation.
+ */
+public class OsLib extends LFunction {
+ public static String TMP_PREFIX = ".luaj";
+ public static String TMP_SUFFIX = "tmp";
+
+ /**
+ * Create a function stub with a specific index.
+ * This is a factory method so that subclasses can
+ * use install(LTable,OsLib) to install themselves.
+ */
+ protected OsLib newInstance( int index ) {
+ return new OsLib(index);
+ }
+
+ public static final String[] NAMES = {
+ "os",
+ "clock",
+ "date",
+ "difftime",
+ "execute",
+ "exit",
+ "getenv",
+ "remove",
+ "rename",
+ "setlocale",
+ "time",
+ "tmpname",
+ };
+
+ private static final int INSTALL = 0;
+ private static final int CLOCK = 1;
+ private static final int DATE = 2;
+ private static final int DIFFTIME = 3;
+ private static final int EXECUTE = 4;
+ private static final int EXIT = 5;
+ private static final int GETENV = 6;
+ private static final int REMOVE = 7;
+ private static final int RENAME = 8;
+ private static final int SETLOCALE = 9;
+ private static final int TIME = 10;
+ private static final int TMPNAME = 11;
+
+ /**
+ * Install the os library using the OsLib class as a factory
+ */
+ public static void install( LTable globals ) {
+ install(globals, new OsLib());
+ }
+
+ /**
+ * Initialize the os libaray using the subblied instance as a factory.
+ * @param factory instance to use as a factory for function stubs.
+ */
+ public static void install( LTable globals, OsLib factory ) {
+ LTable os = new LTable();
+ for ( int i=CLOCK; i<=TMPNAME; i++ )
+ os.put(NAMES[i], factory.newInstance(i));
+ globals.put( "os", os );
+ PackageLib.setIsLoaded("os", os);
+ }
+
+ private static final long t0 = System.currentTimeMillis();
+ private static long tmpnames = t0;
+
+ private final int id;
+
+ protected OsLib() {
+ id = 0;
+ }
+
+ protected OsLib( int id ) {
+ this.id = id;
+ }
+
+ public LString luaAsString() {
+ return new LString(toJavaString());
+ }
+
+ public String toJavaString() {
+ return "os."+toString();
+ }
+
+ public String toString() {
+ return NAMES[id]+"()";
+ }
+
+ public boolean luaStackCall( LuaState vm ) {
+ LValue v;
+ long t,t2;
+ int c;
+ String s;
+ try {
+ switch ( id ) {
+ case INSTALL:
+ install(vm._G, this);
+ break;
+ case CLOCK:
+ vm.resettop();
+ vm.pushnumber(clock());
+ break;
+ case DATE:
+ s = vm.optstring(2, null);
+ t = vm.optlong(3,-1);
+ vm.resettop();
+ vm.pushlvalue( date(s, t==-1? System.currentTimeMillis(): t) );
+ break;
+ case DIFFTIME:
+ t2 = vm.checklong(2);
+ t = vm.checklong(3);
+ vm.resettop();
+ vm.pushnumber(difftime(t2,t));
+ break;
+ case EXECUTE:
+ c = execute(vm.optstring(2, null));
+ vm.resettop();
+ vm.pushinteger(c);
+ break;
+ case EXIT:
+ exit(vm.optint(2, 0));
+ break;
+ case GETENV:
+ s = getenv(vm.checkstring(2));
+ vm.resettop();
+ vm.pushstring(s);
+ break;
+ case REMOVE:
+ remove(vm.checkstring(2));
+ vm.resettop();
+ vm.pushboolean(true);
+ break;
+ case RENAME:
+ rename(vm.checkstring(2), vm.checkstring(3));
+ vm.resettop();
+ vm.pushboolean(true);
+ break;
+ case SETLOCALE:
+ s = setlocale(vm.optstring(2,null), vm.optstring(3, "all"));
+ vm.resettop();
+ if ( s != null )
+ vm.pushstring(s);
+ else
+ vm.pushnil();
+ break;
+ case TIME:
+ t = time(vm.isnoneornil(2)? null: vm.checktable(2));
+ vm.resettop();
+ vm.pushnumber(t);
+ break;
+ case TMPNAME:
+ vm.resettop();
+ vm.pushstring(tmpname());
+ break;
+ default:
+ LuaState.vmerror( "bad os id" );
+ }
+ } catch ( IOException e ) {
+ vm.resettop();
+ vm.pushnil();
+ vm.pushstring(e.getMessage());
+ }
+ return false;
+ }
+
+ /**
+ * @return an approximation of the amount in seconds of CPU time used by
+ * the program.
+ */
+ protected double clock() {
+ return (System.currentTimeMillis()-t0) / 1000.;
+ }
+
+ /**
+ * Returns the number of seconds from time t1 to time t2.
+ * In POSIX, Windows, and some other systems, this value is exactly t2-t1.
+ * @param t2
+ * @param t1
+ * @return diffeence in time values, in seconds
+ */
+ protected double difftime(long t2, long t1) {
+ return (t2 - t1) / 1000.;
+ }
+
+ /**
+ * If the time argument is present, this is the time to be formatted
+ * (see the os.time function for a description of this value).
+ * Otherwise, date formats the current time.
+ *
+ * If format starts with '!', then the date is formatted in Coordinated
+ * Universal Time. After this optional character, if format is the string
+ * "*t", then date returns a table with the following fields: year
+ * (four digits), month (1--12), day (1--31), hour (0--23), min (0--59),
+ * sec (0--61), wday (weekday, Sunday is 1), yday (day of the year),
+ * and isdst (daylight saving flag, a boolean).
+ *
+ * If format is not "*t", then date returns the date as a string,
+ * formatted according to the same rules as the C function strftime.
+ *
+ * When called without arguments, date returns a reasonable date and
+ * time representation that depends on the host system and on the
+ * current locale (that is, os.date() is equivalent to os.date("%c")).
+ *
+ * @param format
+ * @param time time since epoch, or -1 if not supplied
+ * @return a LString or a LTable containing date and time,
+ * formatted according to the given string format.
+ */
+ protected LValue date(String format, long time) {
+ return LString.valueOf( new java.util.Date(time).toString() );
+ }
+
+ /**
+ * This function is equivalent to the C function system.
+ * It passes command to be executed by an operating system shell.
+ * It returns a status code, which is system-dependent.
+ * If command is absent, then it returns nonzero if a shell
+ * is available and zero otherwise.
+ * @param command command to pass to the system
+ */
+ protected int execute(String command) {
+ return 0;
+ }
+
+ /**
+ * Calls the C function exit, with an optional code, to terminate the host program.
+ * @param code
+ */
+ protected void exit(int code) {
+ System.exit(code);
+ }
+
+ /**
+ * Returns the value of the process environment variable varname,
+ * or null if the variable is not defined.
+ * @param varname
+ * @return
+ */
+ protected String getenv(String varname) {
+ return System.getProperty(varname);
+ }
+
+ /**
+ * Deletes the file or directory with the given name.
+ * Directories must be empty to be removed.
+ * If this function fails, it throws and IOException
+ *
+ * @param filename
+ * @throws IOException if it fails
+ */
+ protected void remove(String filename) throws IOException {
+ throw new IOException( "not implemented" );
+ }
+
+ /**
+ * Renames file or directory named oldname to newname.
+ * If this function fails,it throws and IOException
+ *
+ * @param oldname old file name
+ * @param newname new file name
+ * @throws IOException if it fails
+ */
+ protected void rename(String oldname, String newname) throws IOException {
+ throw new IOException( "not implemented" );
+ }
+
+ /**
+ * Sets the current locale of the program. locale is a string specifying
+ * a locale; category is an optional string describing which category to change:
+ * "all", "collate", "ctype", "monetary", "numeric", or "time"; the default category
+ * is "all".
+ *
+ * If locale is the empty string, the current locale is set to an implementation-
+ * defined native locale. If locale is the string "C", the current locale is set
+ * to the standard C locale.
+ *
+ * When called with null as the first argument, this function only returns the
+ * name of the current locale for the given category.
+ *
+ * @param locale
+ * @param category
+ * @return the name of the new locale, or null if the request
+ * cannot be honored.
+ */
+ protected String setlocale(String locale, String category) {
+ return null;
+ }
+
+ /**
+ * Returns the current time when called without arguments,
+ * or a time representing the date and time specified by the given table.
+ * This table must have fields year, month, and day,
+ * and may have fields hour, min, sec, and isdst
+ * (for a description of these fields, see the os.date function).
+ * @param table
+ * @return long value for the time
+ */
+ protected long time(LTable table) {
+ return System.currentTimeMillis();
+ }
+
+ /**
+ * Returns a string with a file name that can be used for a temporary file.
+ * The file must be explicitly opened before its use and explicitly removed
+ * when no longer needed.
+ *
+ * On some systems (POSIX), this function also creates a file with that name,
+ * to avoid security risks. (Someone else might create the file with wrong
+ * permissions in the time between getting the name and creating the file.)
+ * You still have to open the file to use it and to remove it (even if you
+ * do not use it).
+ *
+ * @return String filename to use
+ */
+ protected String tmpname() {
+ return TMP_PREFIX+(tmpnames++)+TMP_SUFFIX;
+ }
+}
diff --git a/src/j2se/org/luaj/lib/j2se/J2seOsLib.java b/src/j2se/org/luaj/lib/j2se/J2seOsLib.java
new file mode 100644
index 00000000..9860da22
--- /dev/null
+++ b/src/j2se/org/luaj/lib/j2se/J2seOsLib.java
@@ -0,0 +1,84 @@
+/*******************************************************************************
+* Copyright (c) 2009 LuaJ. All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+******************************************************************************/
+package org.luaj.lib.j2se;
+import java.io.File;
+import java.io.IOException;
+
+import org.luaj.lib.OsLib;
+
+/**
+ * Implementation of the lua os library for J2se
+ */
+public class J2seOsLib extends OsLib {
+ public static int EXEC_IOEXCEPTION = -1;
+ public static int EXEC_INTERRUPTED = -2;
+ public static int EXEC_ERROR = -3;
+
+ public J2seOsLib() {
+ super();
+ }
+
+ protected OsLib newInstance(int index) {
+ return new J2seOsLib(index);
+ }
+
+ private J2seOsLib(int id) {
+ super(id);
+ }
+
+ protected int execute(String command) {
+ Runtime r = Runtime.getRuntime();
+ try {
+ final Process p = r.exec(command);
+ try {
+ p.waitFor();
+ return p.exitValue();
+ } finally {
+ p.destroy();
+ }
+ } catch (IOException ioe) {
+ return EXEC_IOEXCEPTION;
+ } catch (InterruptedException e) {
+ return EXEC_INTERRUPTED;
+ } catch (Throwable t) {
+ return EXEC_ERROR;
+ }
+ }
+
+ protected void remove(String filename) throws IOException {
+ new File(filename).delete();
+ }
+
+ protected void rename(String oldname, String newname) throws IOException {
+ new File(oldname).renameTo(new File(newname));
+ }
+
+ protected String tmpname() {
+ try {
+ java.io.File f = java.io.File.createTempFile(TMP_PREFIX ,TMP_SUFFIX);
+ return f.getName();
+ } catch ( IOException ioe ) {
+ return super.tmpname();
+ }
+ }
+
+}
diff --git a/src/test/res/oslib.lua b/src/test/res/oslib.lua
new file mode 100644
index 00000000..d47c5f5f
--- /dev/null
+++ b/src/test/res/oslib.lua
@@ -0,0 +1,36 @@
+-- simple os-library tests
+-- these can't really be compared to C meaningfully,
+-- because they are so highly os-dependent.
+local lib = "org.luaj.lib.j2se.J2seOsLib"
+-- local lib = "org.luaj.lib.OsLib"
+print( 'require "'..lib..'"', pcall( require, lib ) )
+print( 'os', os ~= nil )
+print( 'os.clock()', pcall( os.clock ) )
+print( 'os.date()', pcall( os.date ) )
+print( 'os.difftime(123000, 21250)', pcall( os.difftime, 123000, 21250 ) )
+print( 'os.execute("ipconfig")', pcall( os.execute, 'ipconfig' ) )
+print( 'os.execute("")', pcall( os.execute, '' ) )
+print( 'os.getenv()', pcall( os.getenv ) )
+print( 'os.getenv("bogus.key")', pcall( os.getenv, 'bogus.key' ) )
+print( 'os.getenv("java.runtime.version")', pcall( os.getenv, 'java.runtime.version' ) )
+local s,p = pcall( os.tmpname )
+local s,q = pcall( os.tmpname )
+print( 'os.tmpname()', s, p )
+print( 'os.tmpname()', s, q )
+print( 'os.remove(p)', pcall( os.remove, p ) )
+print( 'os.rename(p,q)', pcall( os.rename, p, q ) )
+local s,f = pcall( io.open, p,"w" )
+print( 'io.open', s, f )
+print( 'write', pcall( f.write, f, "abcdef 12345" ) )
+print( 'close', pcall( f.close, f ) )
+print( 'os.rename(p,q)', pcall( os.rename, p, q ) )
+print( 'os.remove(q)', pcall( os.remove, q ) )
+print( 'os.remove(q)', pcall( os.remove, q ) )
+print( 'os.setlocale()', pcall( os.setlocale ) )
+print( 'os.setlocale("jp")', pcall( os.setlocale, "jp" ) )
+print( 'os.setlocale("us","monetary")', pcall( os.setlocale, "us", "monetary" ) )
+print( 'os.setlocale(nil,"all")', pcall( os.setlocale, nil, "all" ) )
+print( 'os.setlocale("c")', pcall( os.setlocale, "c" ) )
+print( 'os.exit(123)' )
+print( pcall( os.exit, -123 ) )
+print( 'failed to exit' )