Richard S. Hall | af656a0 | 2009-06-11 16:07:20 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package aQute.shell.runtime; |
| 20 | |
| 21 | import java.io.*; |
| 22 | import java.lang.reflect.*; |
| 23 | import java.util.*; |
| 24 | |
| 25 | import org.osgi.service.command.*; |
| 26 | |
| 27 | public class CommandSessionImpl implements CommandSession, Converter { |
| 28 | String COLUMN = "%-20s %s\n"; |
| 29 | InputStream in; |
| 30 | PrintStream out; |
| 31 | PrintStream err; |
| 32 | CommandShellImpl service; |
| 33 | Map<Object, Object> variables = new HashMap<Object, Object>(); |
| 34 | |
| 35 | CommandSessionImpl(CommandShellImpl service, InputStream in, |
| 36 | PrintStream out, PrintStream err) { |
| 37 | this.service = service; |
| 38 | this.in = in; |
| 39 | this.out = out; |
| 40 | this.err = err; |
| 41 | } |
| 42 | |
| 43 | public void close() { |
| 44 | } |
| 45 | |
| 46 | public Object execute(CharSequence commandline) throws Exception { |
| 47 | assert service != null; |
| 48 | assert service.threadIO != null; |
| 49 | |
| 50 | Closure impl = new Closure(this, null, commandline); |
| 51 | Object result = impl.execute(this, null); |
| 52 | return result; |
| 53 | } |
| 54 | |
| 55 | public InputStream getKeybord() { |
| 56 | return in; |
| 57 | } |
| 58 | |
| 59 | public Object get(String name) { |
| 60 | if (variables != null && variables.containsKey(name)) |
| 61 | return variables.get(name); |
| 62 | |
| 63 | return service.get(name); |
| 64 | } |
| 65 | |
| 66 | public void put(String name, Object value) { |
| 67 | variables.put(name, value); |
| 68 | } |
| 69 | |
| 70 | public PrintStream getConsole() { |
| 71 | return out; |
| 72 | } |
| 73 | |
| 74 | |
| 75 | @SuppressWarnings("unchecked") |
| 76 | public |
| 77 | CharSequence format(Object target, int level, Converter escape ) throws Exception { |
| 78 | if (target == null) |
| 79 | return "null"; |
| 80 | |
| 81 | if (target instanceof CharSequence ) |
| 82 | return (CharSequence) target; |
| 83 | |
| 84 | for (Converter c : service.converters) { |
| 85 | CharSequence s = c.format(target, level, this); |
| 86 | if (s != null) |
| 87 | return s; |
| 88 | } |
| 89 | |
| 90 | if (target.getClass().isArray()) { |
| 91 | if ( target.getClass().getComponentType().isPrimitive()) { |
| 92 | if ( target.getClass().getComponentType() == boolean.class ) |
| 93 | return Arrays.toString((boolean[]) target); |
| 94 | else if ( target.getClass().getComponentType() == byte.class ) |
| 95 | return Arrays.toString((byte[]) target); |
| 96 | else if ( target.getClass().getComponentType() == short.class ) |
| 97 | return Arrays.toString((short[]) target); |
| 98 | else if ( target.getClass().getComponentType() == int.class ) |
| 99 | return Arrays.toString((int[]) target); |
| 100 | else if ( target.getClass().getComponentType() == long.class ) |
| 101 | return Arrays.toString((long[]) target); |
| 102 | else if ( target.getClass().getComponentType() == float.class ) |
| 103 | return Arrays.toString((float[]) target); |
| 104 | else if ( target.getClass().getComponentType() == double.class ) |
| 105 | return Arrays.toString((double[]) target); |
| 106 | else if ( target.getClass().getComponentType() == char.class ) |
| 107 | return Arrays.toString((char[]) target); |
| 108 | } |
| 109 | target = Arrays.asList((Object[]) target); |
| 110 | } |
| 111 | if (target instanceof Collection) { |
| 112 | if (level == Converter.INSPECT) { |
| 113 | StringBuilder sb = new StringBuilder(); |
| 114 | Collection<?> c = (Collection<?>) target; |
| 115 | for (Object o : c) { |
| 116 | sb.append(format(o, level + 1, this)); |
| 117 | sb.append("\n"); |
| 118 | } |
| 119 | return sb; |
| 120 | } else if (level == Converter.LINE) { |
| 121 | StringBuilder sb = new StringBuilder(); |
| 122 | String del = "["; |
| 123 | Collection<?> c = (Collection<?>) target; |
| 124 | for (Object o : c) { |
| 125 | sb.append(del); |
| 126 | sb.append(format(o, level + 1, this)); |
| 127 | del = ", "; |
| 128 | } |
| 129 | sb.append("]"); |
| 130 | return sb; |
| 131 | } |
| 132 | } |
| 133 | if ( target instanceof Dictionary ) { |
| 134 | Map<Object,Object> result = new HashMap<Object,Object>(); |
| 135 | for ( Enumeration e = ((Dictionary)target).keys(); e.hasMoreElements(); ) { |
| 136 | Object key = e.nextElement(); |
| 137 | result.put(key, ((Dictionary)target).get(key)); |
| 138 | } |
| 139 | target = result; |
| 140 | } |
| 141 | if (target instanceof Map) { |
| 142 | if (level == Converter.INSPECT) { |
| 143 | StringBuilder sb = new StringBuilder(); |
| 144 | Map<?,?> c = (Map<?,?>) target; |
| 145 | for (Map.Entry<?,?> entry : c.entrySet()) { |
| 146 | CharSequence key = format(entry.getKey(), level + 1, this); |
| 147 | sb.append(key); |
| 148 | for ( int i=key.length(); i<20; i++ ) |
| 149 | sb.append(' '); |
| 150 | sb.append(format(entry.getValue(), level + 1, this)); |
| 151 | sb.append("\n"); |
| 152 | } |
| 153 | return sb; |
| 154 | } else if (level == Converter.LINE) { |
| 155 | StringBuilder sb = new StringBuilder(); |
| 156 | String del = "["; |
| 157 | Map<?,?> c = (Map<?,?>) target; |
| 158 | for (Map.Entry<?,?> entry : c.entrySet()) { |
| 159 | sb.append(del); |
| 160 | sb.append(format(entry, level + 1,this)); |
| 161 | del = ", "; |
| 162 | } |
| 163 | sb.append("]"); |
| 164 | return sb; |
| 165 | } |
| 166 | } |
| 167 | if (level == Converter.INSPECT) |
| 168 | return inspect(target); |
| 169 | else |
| 170 | return target.toString(); |
| 171 | } |
| 172 | |
| 173 | CharSequence inspect(Object b) { |
| 174 | boolean found = false; |
| 175 | Formatter f = new Formatter(); |
| 176 | Method methods[] = b.getClass().getMethods(); |
| 177 | for (Method m : methods) { |
| 178 | try { |
| 179 | String name = m.getName(); |
| 180 | if (m.getName().startsWith("get") |
| 181 | && !m.getName().equals("getClass") |
| 182 | && m.getParameterTypes().length == 0 |
| 183 | && Modifier.isPublic(m.getModifiers())) { |
| 184 | found = true; |
| 185 | name = name.substring(3); |
| 186 | m.setAccessible(true); |
| 187 | Object value = m.invoke(b, (Object[]) null); |
| 188 | f.format(COLUMN, name, format(value, Converter.LINE, this)); |
| 189 | } |
| 190 | } catch (IllegalAccessException e) { |
| 191 | // Ignore |
| 192 | } catch (Exception e) { |
| 193 | e.printStackTrace(); |
| 194 | } |
| 195 | } |
| 196 | if (found) |
| 197 | return (StringBuilder) f.out(); |
| 198 | else |
| 199 | return b.toString(); |
| 200 | } |
| 201 | |
| 202 | |
| 203 | public Object convert(Class<?> desiredType, Object in) { |
| 204 | return service.convert(desiredType, in); |
| 205 | } |
| 206 | |
| 207 | public CharSequence format(Object result, int inspect) { |
| 208 | try { |
| 209 | return format(result,inspect,this); |
| 210 | } catch(Exception e ) { |
| 211 | return "<can not format " + result + ":" + e; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | } |