annotate src/converter.cpp @ 25:e5c5ebfa4205

Refactor to centralise html tags
author Andre Heinecke <andre.heinecke@intevation.de>
date Mon, 11 Apr 2016 11:24:17 +0200
parents 927794e3cc52
children 5acd601356ba
rev   line source
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1 /* Copyright (C) 2016 by ETH Zürich
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8
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9 #include "converter.h"
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10 #include <QDebug>
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11 #include <QRegularExpression>
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12 #include <QRegularExpressionMatch>
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13 #include <QTextDocument>
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14 #include <QPrinter>
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15
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16 #include "xlsxdocument.h"
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17 #include "xlsxconditionalformatting.h"
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18
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19 #include "constants.h"
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20
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21 QTXLSX_USE_NAMESPACE
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22
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23 Converter::Converter(const QString &input, const QString &output,
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24 ConvertFormat fmt, const QString &title):
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25 QThread(Q_NULLPTR),
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26 mInput(input),
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27 mOutput(output),
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28 mFmt(fmt),
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29 mTitle(title)
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30 {
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31 mTitleFmt.setFontUnderline(Format::FontUnderlineSingle);
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32 mTitleFmt.setFontSize(18);
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33 mTitleFmt.setFontName("Calibri");
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34 mTitleFmt.setFontBold(true);
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35 mTitleFmt.setVerticalAlignment(Format::AlignTop);
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36
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37
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38 mQuestionFmt.setFontSize(11);
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39 mQuestionFmt.setFontName("Calibri");
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40 mQuestionFmt.setFontBold(true);
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41 mQuestionFmt.setTopBorderStyle(Format::BorderThin);
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42 mQuestionFmt.setBottomBorderStyle(Format::BorderThin);
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43 mQuestionFmt.setTextWarp(true);
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44
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45 mAnswerChoiceFmt.setFontSize(11);
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46 mAnswerChoiceFmt.setFontName("Calibri");
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47 mAnswerChoiceFmt.setHorizontalAlignment(Format::AlignLeft);
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48 mAnswerChoiceFmt.setTextWarp(true);
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49
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50 mChoiceTextFmt = mAnswerChoiceFmt;
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51 mChoiceTextFmt.setVerticalAlignment(Format::AlignVCenter);
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52
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53 mChoiceVotesFmt = mChoiceTextFmt;
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54 mChoiceVotesFmt.setFontSize(10);
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55
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56 mFreeTextFmt = mQuestionFmt;
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57 mFreeTextFmt.setFontBold(false);
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58
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59 mAnswerTextFmt = mQuestionFmt;
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60 mAnswerTextFmt.setVerticalAlignment(Format::AlignVCenter);
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61 mAnswerTextFmt.setHorizontalAlignment(Format::AlignLeft);
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62
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63 mTitleStyle = QStringLiteral("<tr><td colspan='3' style='vertical-align: top;"
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64 "font-weight: bold;font-size:18; text-decoration:"
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65 "underline;'>%1</td></tr>");
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66 const QString questionBorders = QStringLiteral("style='border-bottom: 1pt solid black;"
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67 "border-top: 1pt solid black;font-weight:"
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68 "bold;font-size:11;'");
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69 mQuestionStyle = QStringLiteral("<tr><td ") + questionBorders + QStringLiteral(">%1</td>") +
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70 QStringLiteral("<td %1</td>").arg(questionBorders) +
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71 QStringLiteral("<td %1</td>").arg(questionBorders);
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72 mAnswerChoiceStyle= QStringLiteral("<tr><td style='text-align: left;font-size:11;'>Answer</td><td/><td/></tr>");
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73 mChoiceTextStyle= QStringLiteral("<tr><td style='text-align: right;vertical-algin: center; font-size:11;'>%1</td>");
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74 mChoiceVotesStyle = QStringLiteral("<td style='text-align: left;vertical-algin: center;"
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75 "font-size:10;'</td>%1</td></tr>");
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76 mAnswerTextStyle = QStringLiteral("<tr><td style='text-align: left;font-weight: bold;vertical-algin: center;"
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77 "border-bottom: 1pt solid black;border-top: 1pt solid black;font-size:11;'"
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78 ">Answer</td><td/></td></tr>");
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79 mFreeTextStyle = QStringLiteral("<tr><td colspan='3' style='border-bottom: 1pt solid black;"
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80 "border-top: 1pt solid black;font-size:11;'>%1</td></tr>");
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81 mEmptyRow = QStringLiteral("<tr style='height: %1px'/>").arg(CHOICE_ROW_HEIGHT);
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82 }
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83
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84 void Converter::run()
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85 {
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86 QFile infile;
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87
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88 if (mInput.isEmpty()) {
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89 if (!infile.open(stdin, QIODevice::ReadOnly)) {
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90 mErrors << tr("Failed to open standard input and no input file provided.");
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91 return;
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92 }
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93 } else {
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94 infile.setFileName(mInput);
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95 if (!infile.open(QIODevice::ReadOnly)) {
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96 mErrors << tr("Failed to open %1 for reading.").arg(mInput);
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97 return;
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98 }
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99 }
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100 QTextStream instream(&infile);
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101
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102 QFile outfile;
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103 if (mOutput.isEmpty()) {
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104 if (!outfile.open(stdout, QIODevice::WriteOnly)) {
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105 mErrors << tr("Failed to open standard output and no output file provided.");
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106 return;
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107 }
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108 } else {
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109 outfile.setFileName(mOutput);
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110 if (!outfile.open(QIODevice::WriteOnly)) {
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111 mErrors << tr("Failed to open %1 for writing.").arg(mOutput);
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112 return;
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113 }
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114 }
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115 convertToXSLX(instream, outfile);
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116 }
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117
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118 static void makeBar(QTextStream &html, double percent, QTextDocument &doc, bool forPDF)
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119 {
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120 html << QStringLiteral("<td style='background:linear-gradient(to right,"
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121 "#ff9933, #ff9933 %1%, #ffffff %1%)'></td>").arg(percent);
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122 return;
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123 }
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124
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125 void Converter::convertToXSLX(QTextStream& instream, QFile &output)
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126 {
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127 Document xlsx;
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128 QTextDocument doc;
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129 QString htmlString;
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130 QTextStream html (&htmlString);
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131
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132 ConditionalFormatting bars;
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133
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134 bars.addDataBarRule(QColor(0xFF, 0x99, 0x33), ConditionalFormatting::VOT_Num,
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135 "0", ConditionalFormatting::VOT_Num, "100", false);
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136
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137 const double colWidth[] = COLUMN_WIDTHS;
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138 double sum = 0;
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139
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140 for (int i = 1; i <= COLUMN_CNT; i++) {
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141 xlsx.setColumnWidth(i, colWidth[i-1]);
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142 sum += colWidth[i-1];
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143 }
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144
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145 double xlsx2htmlFactor = HTML_WIDTH / sum;
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146 int col1Width = colWidth[0] * xlsx2htmlFactor;
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147 int col2Width = colWidth[1] * xlsx2htmlFactor;
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148 int col3Width = colWidth[2] * xlsx2htmlFactor;
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149
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150 /* For the merged cell wordwrap trick. */
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151 xlsx.setColumnWidth(26, sum + 1);
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152 xlsx.setColumnHidden(26, true);
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153
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154 html << "<html><meta http-equiv=\"Content-Type\" content=\"text/html;charset=UTF-8\">"
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155 "<body><table border=\"0\" style='width:\"" << HTML_WIDTH << "px\";border-collapse:collapse'>";
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156
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157 int row = 1;
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158 html << "<tr><th width=\"" << col1Width << "\"</th>";
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159 html << "<th width=\"" << col2Width << "\"</th>";
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160 html << "<th width=\"" << col3Width << "\"</th>";
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161 const QString title = mTitle.isEmpty() ? DEFAULT_TITLE : mTitle;
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162 // Set the title of the Questionaire
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163 xlsx.write(row++, 1, title, mTitleFmt);
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164 html << mTitleStyle.arg(title.toHtmlEscaped());
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165 xlsx.mergeCells("A1:C1");
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166 xlsx.setRowHeight(1, TITLE_ROW_HEIGHT);
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167
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168 const QString input = instream.readAll();
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169
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170 QRegularExpression questionEx(QUESTION_PATTERN);
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171 QRegularExpression choiceEx(CHOICE_PATTERN);
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172 QRegularExpression freetxtEx (FREETXT_PATTERN);
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173
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174 QRegularExpressionMatch match = questionEx.match(input);
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175 bool foundSomething = false;
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176 int cursor = match.capturedEnd();
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177 while (match.hasMatch() && cursor != -1) {
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178 /* We've matched a question pattern. With the answer
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179 line */
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180 if (!match.lastCapturedIndex() == 2) {
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181 /* Should not happen without misconfiguration. */
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182 mErrors << "Internal parser error.";
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183 return;
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184 }
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185 foundSomething = true;
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186 const QString question = match.captured(1).trimmed();
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187 const QString answerLine = match.captured(2).trimmed();
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188 xlsx.write(row, 2, QString(" "), mQuestionFmt);
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189 xlsx.write(row, 3, QString(" "), mQuestionFmt);
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190 xlsx.write(row++, 1, question, mQuestionFmt);
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191 html << mQuestionStyle.arg(question.toHtmlEscaped());
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192
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193 if (answerLine == QStringLiteral(CHOICE_IDENTIFIER)) {
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194 QRegularExpressionMatch choiceMatch = choiceEx.match(input, cursor);
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195 xlsx.setRowHeight(row, CHOICE_ROW_HEIGHT);
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196 xlsx.write(row++, 1, "Answer", mAnswerChoiceFmt);
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197 html << mAnswerChoiceStyle;
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198 int firstChoiceRow = row;
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199 int lastChoiceRow = row;
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200 while (choiceMatch.hasMatch() && choiceMatch.capturedStart() == cursor + 1) {
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201 /* We use the cursor here to keep track of the state. Only if an answer
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202 follows immediately behind the last answer we treat it as valid as
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203 otherwise we can't figure out when the next question begins. */
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204 cursor = choiceMatch.capturedEnd();
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205
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206 /* Write the values */
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207 QString choiceName = choiceMatch.captured(1).trimmed();
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208 if (choiceName.startsWith("=")) {
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209 choiceName = " " + choiceName;
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210 }
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211 xlsx.write(row, 1, choiceName, mChoiceTextFmt);
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212 html << mChoiceTextStyle.arg(choiceName.toHtmlEscaped());
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213 bool ok;
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214 double percent = choiceMatch.captured(3).toDouble(&ok);
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215 if (!ok) {
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216 mErrors << "Unparsable number in string: " + choiceMatch.captured();
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217 }
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218 makeBar(html, percent, doc, mFmt == Format_PDF);
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219 xlsx.write(row, 2, percent);
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220 const QString numVotesString = QString("%1% | %2 Number of votes").
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221 arg(choiceMatch.captured(3)).arg(choiceMatch.captured(2));
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222 html << mChoiceVotesStyle.arg(numVotesString.toHtmlEscaped());
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223 xlsx.write(row, 3, numVotesString, mChoiceVotesFmt);
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224 xlsx.setRowHeight(row, CHOICE_ROW_HEIGHT);
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225 /* As long as we can match a choice which is either before the next question
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226 or before the end of the document */
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227 choiceMatch = choiceEx.match(input, cursor);
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228 row++;
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229 lastChoiceRow++;
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230 }
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231 bars.addRange(QString("B%1:B%2").arg(firstChoiceRow).arg(lastChoiceRow));
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232 // xlsx.groupRows(firstChoiceRow - 2, lastChoiceRow - 1, false);
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233 } else if (answerLine == QStringLiteral(TEXT_IDENTIFIER)) {
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234 QRegularExpressionMatch textMatch = freetxtEx.match(input, cursor);
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235 xlsx.setRowHeight(row, CHOICE_ROW_HEIGHT);
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236 xlsx.write(row++, 1, "Answer", mAnswerTextFmt);
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237 html << mAnswerTextStyle;
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238
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239 /* To handle the workaround for quotes in answers we store
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240 * the number of rows and only afterwards create the html rows. */
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241 int firstFreeRow = row;
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242 while (textMatch.hasMatch()) {
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243 if (textMatch.capturedStart() != cursor + 1) {
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244 /* The format allows unescaped quotes in the text.
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245 This makes a workaround neccessary. If we have
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246 an Unquoted string between the next quoted string
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247 and that Unquoted string is before the next question
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248 we append the unquoted string and the next quoted string
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249 with Quotes in the Row.*/
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250 QRegularExpressionMatch nextQuestion = questionEx.match(input, cursor);
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251 if (nextQuestion.hasMatch() &&
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252 nextQuestion.capturedStart() < textMatch.capturedEnd()) {
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253 /* The next question comes before the textMatch so we really have
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254 a new question. */
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255 break;
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256 }
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257 const QString lastRow = xlsx.read(row - 1, 26).toString();
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258 int unquotedLen = textMatch.capturedStart() - cursor;
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259 const QString unquoted = input.mid(cursor, unquotedLen);
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260 qDebug() << "Found inner quoted string: " << unquoted;
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261 /* Now combine */
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262 const QString combined = QString("%1\"%2\"%3").arg(lastRow).
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263 arg(unquoted).
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264 arg(textMatch.captured(1).trimmed());
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265 qDebug() << "Last row: " << lastRow;
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266 qDebug() << "Next Question is at: " << nextQuestion.capturedStart();
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267 qDebug() << "Text match is: " << textMatch.captured(1).trimmed();
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268 qDebug() << "cursor is at: " << cursor;
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269 qDebug() << "text match starts at: " << textMatch.capturedStart();
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270 xlsx.write(row - 1, 26, combined, mFreeTextFmt);
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271 xlsx.write(row - 1, 1, combined, mFreeTextFmt);
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272 cursor = textMatch.capturedEnd();
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273 textMatch = freetxtEx.match(input, cursor);
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274 continue;
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275 }
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276 cursor = textMatch.capturedEnd();
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277
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278 QString text = textMatch.captured(1).trimmed();
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279 qDebug() << "Found free text: " << text;
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280 if (text.startsWith("=")) {
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281 text = " " + text;
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282 }
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283
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284 /* Merge the cells */
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285 xlsx.mergeCells(QString("A%1:C%1").arg(row), mFreeTextFmt);
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286
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287 /* Merged cells ignore wordwrap the following trick is based on:
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288 http://excel.tips.net/T003207_Automatic_Row_Height_For_Merged_Cells_with_Text_Wrap.html
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289 */
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290 /* Write the values */
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291 xlsx.write(QString("Z%1").arg(row), text, mFreeTextFmt);
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292 xlsx.write(row, 1, text, mFreeTextFmt);
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293 row++;
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294
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295 textMatch = freetxtEx.match(input, cursor);
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296 }
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297 for (int i = firstFreeRow; i < row; i++) {
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298 html << mFreeTextStyle.arg(xlsx.read(i, 1).toString().toHtmlEscaped());
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299 }
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300 }
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301 /* Insert Empty row. */
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302 xlsx.setRowHeight(row++, CHOICE_ROW_HEIGHT);
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303 match = questionEx.match(input, cursor);
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304 cursor = match.capturedEnd();
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305 html << mEmptyRow;
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306 }
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307 xlsx.addConditionalFormatting(bars);
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308
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309 if (!foundSomething) {
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310 mErrors << tr("Failed to parse input document.");
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311 }
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312
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313 if (mFmt == Format_XLSX && !xlsx.saveAs(&output)) {
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314 mErrors << tr("Saving the XLSX document failed.");
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315 return;
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316 }
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317
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318 html << "</table></body></html>";
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319
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320 if (mFmt == Format_HTML) {
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321 QTextStream outstream(&output);
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322 outstream << htmlString;
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323 return;
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324 }
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325
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326 if (mFmt == Format_PDF) {
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327 output.close();
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328 QPrinter printer(QPrinter::PrinterResolution);
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329 printer.setOutputFormat(QPrinter::PdfFormat);
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330 printer.setPaperSize(QPrinter::A4);
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331 printer.setOutputFileName(output.fileName());
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332 doc.setHtml(htmlString);
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333 doc.print(&printer);
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334 }
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335 }
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