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