Mercurial > hg > Members > kono > jpf-core

annotate src/main/gov/nasa/jpf/util/StructuredPrinter.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.util;
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20
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21 import java.io.PrintWriter;
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22
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23 /**
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24 * a common base for printers that need to keep track of indentation levels
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25 */
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26 public abstract class StructuredPrinter {
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27
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28 protected PrintWriter pw;
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29
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30 protected int indentLevel = 0;
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31 protected String indent = "";
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32
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33 protected StructuredPrinter(){
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34 pw = new PrintWriter(System.out, true);
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35 }
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36
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37 protected StructuredPrinter (PrintWriter pw){
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38 this.pw = pw;
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39 }
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40
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41 protected void incIndent(){
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42 indentLevel++;
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43 indent = indent();
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44 }
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45
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46 protected void decIndent(){
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47 if (indentLevel > 0){
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48 indentLevel--;
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49 indent = indent();
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50 }
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51 }
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52
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53 protected String indent(){
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54 switch (indentLevel){
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55 case 0: return "";
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56 case 1: return " ";
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57 case 2: return " ";
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58 case 3: return " ";
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59 case 4: return " ";
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60 default:
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61 StringBuilder sb = new StringBuilder();
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62 for (int i=0; i<indentLevel; i++){
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63 sb.append(" ");
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64 }
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65 return sb.toString();
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66 }
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67 }
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68
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69 protected void printSectionHeader(String id){
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70 pw.println();
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71 pw.print("--------------------------------------------------- ");
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72 pw.println(id);
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73 }
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74
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75
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76 }