qse/ase/awk/Awk.java

346 lines
8.8 KiB
Java

/*
* $Id: Awk.java,v 1.26 2007-02-03 10:47:40 bacon Exp $
*
* {License}
*/
package ase.awk;
public abstract class Awk
{
// mode for open_source & close_source
public static final int SOURCE_READ = 1;
public static final int SOURCE_WRITE = 2;
// depth id
public static final int DEPTH_BLOCK_PARSE = (1 << 0);
public static final int DEPTH_BLOCK_RUN = (1 << 1);
public static final int DEPTH_EXPR_PARSE = (1 << 2);
public static final int DEPTH_EXPR_RUN = (1 << 3);
public static final int DEPTH_REX_BUILD = (1 << 4);
public static final int DEPTH_REX_MATCH = (1 << 5);
// options
public static final int OPTION_IMPLICIT = (1 << 0);
public static final int OPTION_EXPLICIT = (1 << 1);
public static final int OPTION_UNIQUEFN = (1 << 2);
public static final int OPTION_SHADING = (1 << 3);
public static final int OPTION_SHIFT = (1 << 4);
public static final int OPTION_IDIV = (1 << 5);
public static final int OPTION_STRCONCAT = (1 << 6);
public static final int OPTION_EXTIO = (1 << 7);
public static final int OPTION_COPROC = (1 << 8);
public static final int OPTION_BLOCKLESS = (1 << 9);
public static final int OPTION_STRBASEONE = (1 << 10);
public static final int OPTION_STRIPSPACES = (1 << 11);
public static final int OPTION_NEXTOFILE = (1 << 12);
public static final int OPTION_CRLF = (1 << 13);
private long handle;
public Awk () throws Exception
{
this.handle = 0;
open ();
}
/* == just in case == */
protected void finalize () throws Throwable
{
super.finalize ();
if (handle != 0) close ();
}
/* == native methods == */
private native void open () throws Exception;
public native void close ();
public native void parse () throws Exception;
public native void run (String main, String[] args) throws Exception;
private native int getmaxdepth (int id);
private native void setmaxdepth (int id, int depth);
private native int getoption ();
private native void setoption (int opt);
private native boolean getdebug ();
private native void setdebug (boolean debug);
private native void addbfn (
String name, int min_args, int max_args) throws Exception;
private native void delbfn (String name) throws Exception;
private native void setfilename (
long runid, String name) throws Exception;
private native void setofilename (
long runid, String name) throws Exception;
private native Object strtonum (
long runid, String str) throws Exception;
private native String valtostr (
long runid, Object obj) throws Exception;
/* == simpler run methods == */
public void run (String main) throws Exception
{
run (main, null);
}
public void run (String[] args) throws Exception
{
run (null, args);
}
public void run () throws Exception
{
run (null, null);
}
/* == builtin functions == */
public void addBuiltinFunction (
String name, int min_args, int max_args) throws Exception
{
addbfn (name, min_args, max_args);
}
public void deleteBuiltinFunction (String name) throws Exception
{
delbfn (name);
}
protected long builtinFunctionArgumentToLong (
long runid, Object obj) throws Exception
{
long n;
if (obj == null) n = 0;
else
{
if (obj instanceof String)
obj = strtonum (runid, (String)obj);
if (obj instanceof Long)
{
n = ((Long)obj).longValue ();
}
else if (obj instanceof Double)
{
n = ((Double)obj).longValue ();
}
else if (obj instanceof Integer)
{
n = ((Integer)obj).longValue ();
}
else if (obj instanceof Short)
{
n = ((Short)obj).longValue ();
}
else if (obj instanceof Float)
{
n = ((Float)obj).longValue ();
}
else n = 0;
}
return n;
}
protected double builtinFunctionArgumentToDouble (
long runid, Object obj) throws Exception
{
double n;
if (obj == null) n = 0.0;
else
{
if (obj instanceof String)
obj = strtonum (runid, (String)obj);
if (obj instanceof Long)
{
n = ((Long)obj).doubleValue ();
}
else if (obj instanceof Double)
{
n = ((Double)obj).doubleValue ();
}
else if (obj instanceof Integer)
{
n = ((Integer)obj).doubleValue ();
}
else if (obj instanceof Short)
{
n = ((Short)obj).doubleValue ();
}
else if (obj instanceof Float)
{
n = ((Float)obj).doubleValue ();
}
else n = 0.0;
}
return n;
}
protected String builtinFunctionArgumentToString (
long runid, Object obj) throws Exception
{
String str;
if (obj == null) str = "";
else if (obj instanceof String) str = (String)obj;
else str = valtostr (runid, obj);
return str;
}
/* == console name setters == */
protected void setConsoleInputName (
Extio extio, String name) throws Exception
{
/* TODO: setfilename is not safe. for example, it can
* crash the program if runid is invalid. so this wrapper
* needs to do some sanity check. */
setfilename (extio.getRunId(), name);
}
protected void setConsoleOutputName (
Extio extio, String name) throws Exception
{
setofilename (extio.getRunId(), name);
}
/* == depth limiting == */
public int getMaxDepth (int id)
{
return getmaxdepth (id);
}
public void setMaxDepth (int ids, int depth)
{
setmaxdepth (ids, depth);
}
/* == option == */
public int getOption ()
{
return getoption ();
}
public void setOption (int opt)
{
setoption (opt);
}
/* == debug == */
public boolean getDebug ()
{
return getdebug ();
}
public void setDebug (boolean debug)
{
setdebug (debug);
}
/* == source code management == */
protected abstract int openSource (int mode);
protected abstract int closeSource (int mode);
protected abstract int readSource (char[] buf, int len);
protected abstract int writeSource (char[] buf, int len);
/* == external io interface == */
protected int openExtio (Extio extio)
{
int type = extio.getType ();
if (type == Extio.TYPE_CONSOLE) return openConsole (extio);
if (type == Extio.TYPE_FILE) return openFile (extio);
if (type == Extio.TYPE_PIPE) return openPipe (extio);
//if (type == Extio.TYPE_COPROC) return openCoproc (extio);
return -1;
}
protected int closeExtio (Extio extio)
{
int type = extio.getType ();
if (type == Extio.TYPE_CONSOLE) return closeConsole (extio);
if (type == Extio.TYPE_FILE) return closeFile (extio);
if (type == Extio.TYPE_PIPE) return closePipe (extio);
//if (type == Extio.TYPE_COPROC) return closeCoproc (extio);
return -1;
}
protected int readExtio (Extio extio, char[] buf, int len)
{
// this check is needed because 0 is used to indicate
// the end of the stream. java streams can return 0
// if the data given is 0 bytes and it didn't reach
// the end of the stream.
if (len <= 0) return -1;
int type = extio.getType ();
if (type == Extio.TYPE_CONSOLE)
return readConsole (extio, buf, len);
if (type == Extio.TYPE_FILE)
return readFile (extio, buf, len);
if (type == Extio.TYPE_PIPE)
return readPipe (extio, buf, len);
//if (type == Extio.TYPE_COPROC)
// return readCoproc (extio, buf, len);
return -1;
}
protected int writeExtio (Extio extio, char[] buf, int len)
{
if (len <= 0) return -1;
int type = extio.getType ();
if (type == Extio.TYPE_CONSOLE)
return writeConsole (extio, buf, len);
if (type == Extio.TYPE_FILE)
return writeFile (extio, buf, len);
if (type == Extio.TYPE_PIPE)
return writePipe (extio, buf, len);
//if (type == Extio.TYPE_COPROC)
// return writeCoproc (extio, buf, len);
return -1;
}
protected int flushExtio (Extio extio)
{
int type = extio.getType ();
if (type == Extio.TYPE_CONSOLE) return flushConsole (extio);
if (type == Extio.TYPE_FILE) return flushFile (extio);
if (type == Extio.TYPE_PIPE) return flushPipe (extio);
//if (type == Extio.TYPE_COPROC) return flushCoproc (extio);
return -1;
}
protected int nextExtio (Extio extio)
{
int type = extio.getType ();
if (type == Extio.TYPE_CONSOLE) return nextConsole (extio);
return -1;
}
protected abstract int openConsole (Extio extio);
protected abstract int closeConsole (Extio extio);
protected abstract int readConsole (Extio extio, char[] buf, int len);
protected abstract int writeConsole (Extio extio, char[] buf, int len);
protected abstract int flushConsole (Extio extio);
protected abstract int nextConsole (Extio extio);
protected abstract int openFile (Extio extio);
protected abstract int closeFile (Extio extio);
protected abstract int readFile (Extio extio, char[] buf, int len);
protected abstract int writeFile (Extio extio, char[] buf, int len);
protected abstract int flushFile (Extio extio);
protected abstract int openPipe (Extio extio);
protected abstract int closePipe (Extio extio);
protected abstract int readPipe (Extio extio, char[] buf, int len);
protected abstract int writePipe (Extio extio, char[] buf, int len);
protected abstract int flushPipe (Extio extio);
}