X-Git-Url: http://dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fdolda%2Fjsvc%2Fj2ee%2FPosixArgs.java;fp=src%2Fdolda%2Fjsvc%2Fj2ee%2FPosixArgs.java;h=4a23941f2c97c56153912c8924ec37be5e4fab54;hb=f179d8ba3acb55d1419a9de851d0fcf996798cc4;hp=0000000000000000000000000000000000000000;hpb=78f5d1201f8d3aecb660b7877b08d9bfbe650911;p=jsvc.git

diff --git a/src/dolda/jsvc/j2ee/PosixArgs.java b/src/dolda/jsvc/j2ee/PosixArgs.java
new file mode 100644
index 0000000..4a23941
--- /dev/null
+++ b/src/dolda/jsvc/j2ee/PosixArgs.java
@@ -0,0 +1,100 @@
+package dolda.jsvc.j2ee;
+
+import java.util.*;
+
+public class PosixArgs {
+    private List<Arg> parsed;
+    public String[] rest;
+    public String arg = null;
+    
+    private static class Arg {
+	private char ch;
+	private String arg;
+	
+	private Arg(char ch, String arg) {
+	    this.ch = ch;
+	    this.arg = arg;
+	}
+    }
+    
+    private PosixArgs() {
+	parsed = new ArrayList<Arg>();
+    }
+
+    public static PosixArgs getopt(String[] argv, int start, String desc) {
+	PosixArgs ret = new PosixArgs();
+	List<Character> fl = new ArrayList<Character>(), fla = new ArrayList<Character>();
+	List<String> rest = new ArrayList<String>();
+	for(int i = 0; i < desc.length();) {
+	    char ch = desc.charAt(i++);
+	    if((i < desc.length()) && (desc.charAt(i) == ':')) {
+		i++;
+		fla.add(ch);
+	    } else {
+		fl.add(ch);
+	    }
+	}
+	boolean acc = true;
+	for(int i = start; i < argv.length;) {
+	    String arg = argv[i++];
+	    if(acc && arg.equals("--")) {
+		acc = false;
+	    } if(acc && (arg.charAt(0) == '-')) {
+		for(int o = 1; o < arg.length();) {
+		    char ch = arg.charAt(o++);
+		    if(fl.contains(ch)) {
+			ret.parsed.add(new Arg(ch, null));
+		    } else if(fla.contains(ch)) {
+			if(o < arg.length()) {
+			    ret.parsed.add(new Arg(ch, arg.substring(o)));
+			    break;
+			} else if(i < argv.length) {
+			    ret.parsed.add(new Arg(ch, argv[i++]));
+			    break;
+			} else {
+			    System.err.println("option requires an argument -- '" + ch + "'");
+			    return(null);
+			}
+		    } else {
+			System.err.println("invalid option -- '" + ch + "'");
+			return(null);
+		    }
+		}
+	    } else {
+		rest.add(arg);
+	    }
+	}
+	ret.rest = rest.toArray(new String[0]);
+	return(ret);
+    }
+    
+    public static PosixArgs getopt(String[] argv, String desc) {
+	return(getopt(argv, 0, desc));
+    }
+    
+    public Iterable<Character> parsed() {
+	return(new Iterable<Character>() {
+		public Iterator<Character> iterator() {
+		    return(new Iterator<Character>() {
+			    private int i = 0;
+			    
+			    public boolean hasNext() {
+				return(i < parsed.size());
+			    }
+			    
+			    public Character next() {
+				if(i >= parsed.size())
+				    throw(new NoSuchElementException());
+				Arg a = parsed.get(i++);
+				arg = a.arg;
+				return(a.ch);
+			    }
+			    
+			    public void remove() {
+				throw(new UnsupportedOperationException());
+			    }
+			});
+		}
+	    });
+    }
+}