annotate libgui/qterminal/libqterminal/unix/TerminalCharacterDecoder.h @ 19627:446c46af4b42 stable

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scripts/statistics/distributions/unifrnd.m, scripts/statistics/distributions/wblrnd.m, scripts/statistics/models/module.mk, scripts/statistics/tests/kruskal_wallis_test.m, scripts/strings/base2dec.m, scripts/strings/deblank.m, scripts/strings/dec2base.m, scripts/strings/dec2bin.m, scripts/strings/dec2hex.m, scripts/strings/mat2str.m, scripts/strings/ostrsplit.m, scripts/strings/regexptranslate.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strjoin.m, scripts/strings/strsplit.m, scripts/strings/strtok.m, scripts/strings/strtrim.m, scripts/strings/strtrunc.m, scripts/strings/substr.m, scripts/testfun/__run_test_suite__.m, scripts/testfun/speed.m, scripts/testfun/test.m, scripts/time/asctime.m, scripts/time/datenum.m, scripts/time/datevec.m, scripts/time/weekday.m, src/Makefile.am, test/Makefile.am, test/build-bc-overload-tests.sh, test/build-sparse-tests.sh, test/jit.tst, test/line-continue.tst: Strip trailing whitespace.
author John W. Eaton <jwe@octave.org>
date Tue, 20 Jan 2015 08:26:57 -0500
parents d63878346099
children
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1 /*
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2 This file is part of Konsole, an X terminal.
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3
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4 Copyright (C) 2006-2007, 2013 by Robert Knight <robertknight@gmail.com>
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5
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6 Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
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7
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8 This program is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU Lesser General Public License as published by
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10 the Free Software Foundation; either version 2 of the License, or
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11 (at your option) any later version.
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU Lesser General Public License
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19 along with this program; if not, write to the Free Software
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20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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21 02110-1301 USA.
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22 */
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23
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24 #ifndef TERMINAL_CHARACTER_DECODER_H
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25 #define TERMINAL_CHARACTER_DECODER_H
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27 #include "unix/Character.h"
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28
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29 class QTextStream;
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30
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31 /**
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32 * Base class for terminal character decoders
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33 *
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34 * The decoder converts lines of terminal characters which consist of a unicode character, foreground
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35 * and background colours and other appearance-related properties into text strings.
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36 *
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37 * Derived classes may produce either plain text with no other colour or appearance information, or
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38 * they may produce text which incorporates these additional properties.
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39 */
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40 class TerminalCharacterDecoder
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41 {
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42 public:
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43 virtual ~TerminalCharacterDecoder() {}
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44
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45 /** Begin decoding characters. The resulting text is appended to @p output. */
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46 virtual void begin(QTextStream* output) = 0;
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47 /** End decoding. */
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48 virtual void end() = 0;
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49
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50 /**
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51 * Converts a line of terminal characters with associated properties into a text string
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52 * and writes the string into an output QTextStream.
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53 *
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54 * @param characters An array of characters of length @p count.
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55 * @param properties Additional properties which affect all characters in the line
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56 * @param output The output stream which receives the decoded text
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57 */
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58 virtual void decodeLine(const Character* const characters,
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59 int count,
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60 LineProperty properties) = 0;
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61 };
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62
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63 /**
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64 * A terminal character decoder which produces plain text, ignoring colours and other appearance-related
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65 * properties of the original characters.
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66 */
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67 class PlainTextDecoder : public TerminalCharacterDecoder
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68 {
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69 public:
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70 PlainTextDecoder();
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71
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72 /**
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73 * Set whether trailing whitespace at the end of lines should be included
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74 * in the output.
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75 * Defaults to true.
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76 */
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77 void setTrailingWhitespace(bool enable);
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78 /**
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79 * Returns whether trailing whitespace at the end of lines is included
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80 * in the output.
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81 */
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82 bool trailingWhitespace() const;
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83
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84 virtual void begin(QTextStream* output);
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85 virtual void end();
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86
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87 virtual void decodeLine(const Character* const characters,
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88 int count,
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89 LineProperty properties);
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90
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91
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92 private:
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93 QTextStream* _output;
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94 bool _includeTrailingWhitespace;
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95 };
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96
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97 /**
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98 * A terminal character decoder which produces pretty HTML markup
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99 */
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100 class HTMLDecoder : public TerminalCharacterDecoder
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101 {
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102 public:
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103 /**
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104 * Constructs an HTML decoder using a default black-on-white color scheme.
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105 */
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106 HTMLDecoder();
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107
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108 /**
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109 * Sets the colour table which the decoder uses to produce the HTML colour codes in its
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110 * output
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111 */
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112 void setColorTable( const ColorEntry* table );
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113
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114 virtual void decodeLine(const Character* const characters,
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115 int count,
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116 LineProperty properties);
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117
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118 virtual void begin(QTextStream* output);
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119 virtual void end();
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120
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121 private:
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122 void openSpan(QString& text , const QString& style);
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123 void closeSpan(QString& text);
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124
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125 QTextStream* _output;
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126 const ColorEntry* _colorTable;
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127 bool _innerSpanOpen;
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128 quint8 _lastRendition;
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129 CharacterColor _lastForeColor;
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130 CharacterColor _lastBackColor;
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131
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132 };
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133
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134 #endif