50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
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#include "WordsPeak.h"
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#include <QDebug>
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using namespace Parse;
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ForwardStream::ForwardStream() :file_target(nullptr), text_input(nullptr),
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current_line(""), current_row(-1), current_col(0) {}
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ForwardStream::~ForwardStream() {
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if (file_target)
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delete file_target;
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if (text_input)
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delete text_input;
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}
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int ForwardStream::initSource(const QString & path)
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{
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if (file_target)
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delete file_target;
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if (text_input)
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delete text_input;
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if (!QFile(path).exists())
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return -1;
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file_target = new QFile(path);
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if (!file_target->open(QIODevice::ReadOnly | QIODevice::Text))
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return -2;
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text_input = new QTextStream(file_target);
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return 0;
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}
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std::tuple<ForwardStream::n_row, ForwardStream::n_col, QChar> Parse::ForwardStream::read()
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{
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if (current_col >= current_line.length()) {
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if (!text_input->atEnd()) {
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current_row++;
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current_col = 0;
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current_line = text_input->readLine() + '\n';
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}
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else {
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return std::make_tuple(-1, -1, EOF);
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}
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}
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return std::make_tuple(current_row, current_col, current_line[current_col++]);
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}
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