andre@3: /* Copyright (C) 2016 by ETH Zürich
andre@3:  * Software engineering by Intevation GmbH
andre@3:  *
andre@3:  * This file is Free Software under the GNU GPL (v>=2)
andre@3:  * and comes with ABSOLUTELY NO WARRANTY!
andre@3:  * See LICENSE.txt for details.
andre@3:  */
andre@3: 
andre@3: #include "converter.h"
andre@3: #include <QDebug>
andre@3: #include <QRegularExpression>
andre@3: #include <QRegularExpressionMatch>
andre@3: 
andre@3: #include "xlsxdocument.h"
andre@3: #include "xlsxconditionalformatting.h"
andre@3: 
andre@3: #include "constants.h"
andre@3: 
andre@3: QTXLSX_USE_NAMESPACE
andre@3: 
andre@3: Converter::Converter(const QString &input, const QString &output,
andre@3:                      ConvertFormat fmt, const QString &title):
andre@3:     QThread(Q_NULLPTR),
andre@3:     mInput(input),
andre@3:     mOutput(output),
andre@3:     mFmt(fmt),
andre@3:     mTitle(title)
andre@3: {
andre@3:     mTitleFmt.setFontUnderline(Format::FontUnderlineSingle);
andre@3:     mTitleFmt.setFontSize(18);
andre@3:     mTitleFmt.setFontName("Calibri");
andre@3:     mTitleFmt.setFontBold(true);
andre@3:     mTitleFmt.setVerticalAlignment(Format::AlignTop);
andre@3: 
andre@3:     mQuestionFmt.setFontSize(11);
andre@3:     mQuestionFmt.setFontName("Calibri");
andre@3:     mQuestionFmt.setFontBold(true);
andre@3:     mQuestionFmt.setTopBorderStyle(Format::BorderThin);
andre@6:     mQuestionFmt.setBottomBorderStyle(Format::BorderThin);
andre@3:     mQuestionFmt.setTextWarp(true);
andre@3: 
andre@3:     mAnswerChoiceFmt.setFontSize(11);
andre@3:     mAnswerChoiceFmt.setFontName("Calibri");
andre@3:     mAnswerChoiceFmt.setHorizontalAlignment(Format::AlignRight);
andre@6:     mAnswerChoiceFmt.setTextWarp(true);
andre@3: 
andre@3:     mChoiceTextFmt = mAnswerChoiceFmt;
andre@3:     mChoiceTextFmt.setVerticalAlignment(Format::AlignVCenter);
andre@3: 
andre@6:     mFreeTextFmt = mQuestionFmt;
andre@6:     mFreeTextFmt.setFontBold(false);
andre@3: 
andre@6:     mAnswerTextFmt = mQuestionFmt;
andre@6:     mAnswerTextFmt.setVerticalAlignment(Format::AlignVCenter);
andre@6:     mAnswerTextFmt.setHorizontalAlignment(Format::AlignLeft);
andre@3: }
andre@3: 
andre@3: void Converter::run()
andre@3: {
andre@3:     QFile infile;
andre@3: 
andre@3:     if (mInput.isEmpty()) {
andre@3:         if (!infile.open(stdin, QIODevice::ReadOnly)) {
andre@3:             mErrors << tr("Failed to open standard input and no input file provided.");
andre@3:             return;
andre@3:         }
andre@3:     } else {
andre@3:         infile.setFileName(mInput);
andre@3:         if (!infile.open(QIODevice::ReadOnly)) {
andre@3:             mErrors << tr("Failed to open %1 for reading.").arg(mInput);
andre@3:             return;
andre@3:         }
andre@3:     }
andre@3:     QTextStream instream(&infile);
andre@3: 
andre@3:     QFile outfile;
andre@3:     if (mOutput.isEmpty()) {
andre@3:         if (!outfile.open(stdout, QIODevice::WriteOnly)) {
andre@3:             mErrors << tr("Failed to open standard output and no output file provided.");
andre@3:             return;
andre@3:         }
andre@3:     } else {
andre@3:         outfile.setFileName(mOutput);
andre@3:         if (!outfile.open(QIODevice::WriteOnly)) {
andre@3:             mErrors << tr("Failed to open %1 for writing.").arg(mOutput);
andre@3:             return;
andre@3:         }
andre@3:     }
andre@3:     convertToXSLX(instream, outfile);
andre@3: }
andre@3: 
andre@3: void Converter::convertToXSLX(QTextStream& instream, QFile &output)
andre@3: {
andre@3:     Document xlsx;
andre@3: 
andre@3:     ConditionalFormatting bars;
andre@3: 
andre@6:     bars.addDataBarRule(QColor(0xFF, 0x99, 0x33), ConditionalFormatting::VOT_Num,
andre@6:                         "0", ConditionalFormatting::VOT_Num, "100", false);
andre@3: 
andre@3:     const double colWidth[] = COLUMN_WIDTHS;
andre@6:     double sum = 0;
andre@3:     for (int i = 1; i <= COLUMN_CNT; i++) {
andre@3:         xlsx.setColumnWidth(i, colWidth[i-1]);
andre@6:         sum += colWidth[i-1];
andre@3:     }
andre@3: 
andre@6:     /* For the merged cell wordwrap trick. */
andre@6:     xlsx.setColumnWidth(26, sum - 1);
andre@6:     xlsx.setColumnHidden(26, true);
andre@6: 
andre@3:     int row = 1;
andre@3:     if (!mTitle.isEmpty()) {
andre@3:         // Set the title of the Questionaire
andre@3:         xlsx.write(row++, 1, mTitle, mTitleFmt);
andre@3:         xlsx.mergeCells("A1:C1");
andre@3:         xlsx.setRowHeight(1, TITLE_ROW_HEIGHT);
andre@3:     }
andre@3: 
andre@3:     const QString input = instream.readAll();
andre@3: 
andre@3:     QRegularExpression questionEx(QUESTION_PATTERN);
andre@3:     QRegularExpression choiceEx(CHOICE_PATTERN);
andre@3:     QRegularExpression freetxtEx (FREETXT_PATTERN);
andre@3: 
andre@3:     QRegularExpressionMatch match = questionEx.match(input);
andre@3:     bool foundSomething = false;
andre@3:     int cursor = match.capturedEnd();
andre@3:     while (match.hasMatch() && cursor != -1) {
andre@3:         /* We've matched a question pattern. With the answer
andre@3:            line */
andre@3:         if (!match.lastCapturedIndex() == 2) {
andre@3:             /* Should not happen without misconfiguration. */
andre@3:             mErrors << "Internal parser error.";
andre@3:             return;
andre@3:         }
andre@3:         foundSomething = true;
andre@3:         const QString question = match.captured(1).trimmed();
andre@3:         const QString answerLine = match.captured(2).trimmed();
andre@6:         xlsx.write(row, 2, QString(" "), mQuestionFmt);
andre@6:         xlsx.write(row, 3, QString(" "), mQuestionFmt);
andre@3:         xlsx.write(row++, 1, question, mQuestionFmt);
andre@3: 
andre@3:         if (answerLine == QStringLiteral(CHOICE_IDENTIFIER)) {
andre@3:             QRegularExpressionMatch choiceMatch = choiceEx.match(input, cursor);
andre@3:             xlsx.setRowHeight(row, CHOICE_ROW_HEIGHT);
andre@3:             xlsx.write(row++, 1, tr("Answer"), mAnswerChoiceFmt);
andre@3:             int firstChoiceRow = row;
andre@3:             int lastChoiceRow = row;
andre@3:             while (choiceMatch.hasMatch() && choiceMatch.capturedStart() == cursor + 1) {
andre@3:                 /* We use the cursor here to keep track of the state. Only if an answer
andre@3:                    follows immediately behind the last answer we treat it as valid as
andre@3:                    otherwise we can't figure out when the next question begins. */
andre@3:                 cursor = choiceMatch.capturedEnd();
andre@3: 
andre@3:                 /* Write the values */
andre@3:                 xlsx.write(row, 1, choiceMatch.captured(1), mChoiceTextFmt);
andre@3:                 bool ok;
andre@3:                 double percent = choiceMatch.captured(3).toDouble(&ok);
andre@3:                 if (!ok) {
andre@3:                     mErrors << "Unparsable number in string: " + choiceMatch.captured();
andre@3:                 }
andre@3:                 xlsx.write(row, 2, percent);
andre@3:                 xlsx.write(row, 3, tr("%1% | %2 Number of votes").
andre@3:                            arg(choiceMatch.captured(3)).arg(choiceMatch.captured(2)),
andre@3:                            mChoiceVotesFmt);
andre@3:                 xlsx.setRowHeight(row, CHOICE_ROW_HEIGHT);
andre@3:                 /* As long as we can match a choice which is either before the next question
andre@3:                    or before the end of the document */
andre@3:                 choiceMatch = choiceEx.match(input, cursor);
andre@3:                 row++;
andre@3:                 lastChoiceRow++;
andre@3:             }
andre@3:             bars.addRange(QString("B%1:B%2").arg(firstChoiceRow).arg(lastChoiceRow));
andre@3:         } else if (answerLine == QStringLiteral(TEXT_IDENTIFIER)) {
andre@6:             QRegularExpressionMatch textMatch = freetxtEx.match(input, cursor);
andre@6:             xlsx.setRowHeight(row, CHOICE_ROW_HEIGHT);
andre@6:             xlsx.write(row++, 1, tr("Answer"), mAnswerTextFmt);
andre@6:             while (textMatch.hasMatch()) {
andre@6:                 if (textMatch.capturedStart() != cursor + 1) {
andre@6:                     /* The format allows unescaped quotes in the text.
andre@6:                        This makes a workaround neccessary. If we have
andre@6:                        an Unquoted string between the next quoted string
andre@6:                        and that Unquoted string is before the next question
andre@6:                        we append the unquoted string and the next quoted string
andre@6:                        with Quotes in the Row.*/
andre@6:                     QRegularExpressionMatch nextQuestion = questionEx.match(input, cursor);
andre@6:                     if (nextQuestion.hasMatch() &&
andre@6:                         nextQuestion.capturedStart() < textMatch.capturedEnd()) {
andre@6:                         /* The next question comes before the textMatch so we really have
andre@6:                            a new question. */
andre@6:                         break;
andre@6:                     }
andre@6:                     const QString lastRow = xlsx.read(row - 1, 26).toString();
andre@6:                     int unquotedLen = textMatch.capturedStart() - cursor;
andre@6:                     const QString unquoted = input.mid(cursor, unquotedLen);
andre@6:                     qDebug() << "Found inner quoted string: " << unquoted;
andre@6:                     /* Now combine */
andre@6:                     const QString combined = QString("%1\"%2\"%3").arg(lastRow).
andre@6:                                                                    arg(unquoted).
andre@6:                                                                    arg(textMatch.captured(1).trimmed());
andre@6:                     qDebug() << "Last row: " << lastRow;
andre@6:                     qDebug() << "Next Question is at: " << nextQuestion.capturedStart();
andre@6:                     qDebug() << "Text match is: " << textMatch.captured(1).trimmed();
andre@6:                     qDebug() << "cursor is at: " << cursor;
andre@6:                     qDebug() << "text match starts at: " << textMatch.capturedStart();
andre@6:                     xlsx.write(row - 1, 26, combined, mFreeTextFmt);
andre@6:                     cursor = textMatch.capturedEnd();
andre@6:                     textMatch = freetxtEx.match(input, cursor);
andre@6:                     continue;
andre@6:                 }
andre@6:                 cursor = textMatch.capturedEnd();
andre@6: 
andre@6:                 QString text = textMatch.captured(1).trimmed();
andre@6:                 qDebug() << "Found free text: " << text;
andre@6: 
andre@6:                 /* Merge the cells */
andre@6:                 xlsx.mergeCells(QString("A%1:C%1").arg(row), mFreeTextFmt);
andre@6: 
andre@6:                 /* Merged cells ignore wordwrap the following trick is based on:
andre@6:                    http://excel.tips.net/T003207_Automatic_Row_Height_For_Merged_Cells_with_Text_Wrap.html
andre@6:                 */
andre@6:                 /* Write the values */
andre@6:                 xlsx.write(QString("Z%1").arg(row), text, mFreeTextFmt);
andre@6:                 xlsx.write(row, 1, QString("=Z%1").arg(row));
andre@6:                 row++;
andre@6:                 textMatch = freetxtEx.match(input, cursor);
andre@6:             }
andre@3:         }
andre@3:         /* Insert Empty row. */
andre@3:         xlsx.setRowHeight(row++, CHOICE_ROW_HEIGHT);
andre@3:         match = questionEx.match(input, cursor);
andre@3:         cursor = match.capturedEnd();
andre@3:     }
andre@3:     xlsx.addConditionalFormatting(bars);
andre@3: 
andre@3:     if (!foundSomething) {
andre@3:         mErrors << tr("Failed to parse input document.");
andre@3:     }
andre@3: 
andre@3:     if (!xlsx.saveAs(&output)) {
andre@3:         mErrors << tr("Saving the XLSX document failed.");
andre@3:         return;
andre@3:     }
andre@3: }