| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||
| Output |
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| 1.0;1 |
| 1 | /*---------------------------------------------------------------- |
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| 2 | * $Id: Output.java,v 1.1.1.1 2004/01/26 20:46:18 pkb Exp $ |
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| 3 | * |
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| 4 | * (c)2000 - Paul Blankenbaker |
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| 5 | * |
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| 6 | * Revision Log |
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| 7 | * |
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| 8 | * 2000-11-16 11:01:40 Paul Blankenbaker |
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| 9 | * |
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| 10 | * Created initial version |
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| 11 | */ |
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| 12 | //---------------------------------------------------------------- |
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| 13 | ||
| 14 | package com.ccg.macros; |
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| 15 | ||
| 16 | import java.io.*; // needed for I/O operations |
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| 17 | ||
| 18 | //---------------------------------------------------------------- |
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| 19 | /** Interface defining what to do with text generated from output. |
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| 20 | * |
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| 21 | * <p>As a "macro processor" is generating text output from the text |
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| 22 | * input it is processing, it will want a {@link Output Output} object |
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| 23 | * to store the output text to. This interface defines the methods |
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| 24 | * which such an output device must provide. Not exactly sure why I |
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| 25 | * didn't go with a standard Java {@link Writer Writer} class for this |
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| 26 | * - however its easy enough to convert a standard {@link Writer |
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| 27 | * Writer} to a {@link Output Output} object. |
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| 28 | * |
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| 29 | * <p>The following classes implement this interface and can probably |
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| 30 | * be used for most purposes: |
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| 31 | * |
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| 32 | * <dl> |
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| 33 | * |
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| 34 | * <dt>{@link OutputStringBuffer OutputStringBuffer}</dt><dd>Used when |
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| 35 | * one would like the results of the macro processing stored to a |
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| 36 | * string. Also handy for the creation of macro processing classes for |
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| 37 | * recursive processing.</dd> |
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| 38 | * |
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| 39 | * <dt>{@link OutputWriter OutputWriter}</dt><dd>Used for creating |
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| 40 | * output to a standard {@link Writer Writer}.</dd> |
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| 41 | * |
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| 42 | * </dl> |
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| 43 | * |
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| 44 | * @version $Revision: 1.1.1.1 $ |
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| 45 | * |
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| 46 | * @since 1.0 |
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| 47 | * |
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| 48 | * @author $Author: pkb $ |
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| 49 | * |
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| 50 | * @see Interpreter |
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| 51 | * @see OutputWriter |
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| 52 | * @see OutputStringBuffer */ |
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| 53 | //---------------------------------------------------------------- |
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| 54 | ||
| 55 | public interface Output { |
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| 56 | ||
| 57 | //---------------------------------------------------------------- |
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| 58 | /** Writes a set of characters from a buffer to the output. |
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| 59 | * |
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| 60 | * This method is used by macro processors (such as the {@link |
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| 61 | * AtMacros AtMacros} class) to send a set of characters to the |
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| 62 | * output device (string, file, etc). |
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| 63 | * |
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| 64 | * @param buf |
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| 65 | * |
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| 66 | * A character array to take the data from (must not be null) |
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| 67 | * |
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| 68 | * @param ofs |
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| 69 | * |
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| 70 | * Offset into the buffer to the first character to start the |
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| 71 | * copy from. Should be in the range of [0,buf.length-1]. |
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| 72 | * |
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| 73 | * @param len |
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| 74 | * |
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| 75 | * How many characters to copy. When added to the offset, the |
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| 76 | * resulting value should not exceed the length of the array. |
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| 77 | * |
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| 78 | * @throws IOException |
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| 79 | * |
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| 80 | * If a I/O error is encountered. |
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| 81 | * |
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| 82 | * @since 1.0 */ |
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| 83 | //---------------------------------------------------------------- |
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| 84 | ||
| 85 | void write(char[] buf, int ofs, int len) throws IOException; |
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| 86 | ||
| 87 | ||
| 88 | //---------------------------------------------------------------- |
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| 89 | /** Outputs the {@link java.lang.String string} representation of a {@link java.lang.Object Object}. |
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| 90 | * |
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| 91 | * This method is used by macro processors (such as the {@link |
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| 92 | * AtMacros AtMacros} class) to cause the {@link java.lang.String |
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| 93 | * string} representation of a {@link java.lang.Object Object} to be |
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| 94 | * sent to the output device (string, file, etc). |
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| 95 | * |
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| 96 | * @param object |
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| 97 | * |
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| 98 | * The object to write out (the {@link java.lang.Object#toString |
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| 99 | * toString()} method is used to write out the string |
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| 100 | * representation of the object). You may pass null (in which |
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| 101 | * case nothing will be done). |
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| 102 | * |
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| 103 | * @throws IOException |
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| 104 | * |
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| 105 | * If a I/O error is encountered. |
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| 106 | * |
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| 107 | * @since 1.0 */ |
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| 108 | //---------------------------------------------------------------- |
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| 109 | ||
| 110 | void write(Object o) throws IOException; |
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| 111 | ||
| 112 | } |