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#include "configfile.h"

#include <QFile>

ConfigFile::SectionMap ConfigFile::parse(const QString &fileName)

{

    QFile f(fileName);

    if (!f.open(QIODevice::ReadOnly))

        return ConfigFile::SectionMap();

    return parse(&f);

}

ConfigFile::SectionMap ConfigFile::parse(QIODevice *dev)

{

    SectionMap sections;

    SectionMap::Iterator currentSection = sections.end();

    ConfigFile::SectionMap result;

    int currentLineNumber = 0;

    while (!dev->atEnd()) {

        QString line = QString::fromUtf8(dev->readLine()).trimmed();

        ++currentLineNumber;

        if (line.isEmpty() || line.startsWith(QLatin1Char('#')))

            continue;

        if (line.startsWith(QLatin1Char('['))) {

            if (!line.endsWith(']')) {

                qWarning("Syntax error at line %d: Missing ']' at start of new section.", currentLineNumber);

                return SectionMap();

            }

            line.remove(0, 1);

            line.chop(1);

            const QString sectionName = line;

            currentSection = sections.insert(sectionName, Section());

            continue;

        }

        if (currentSection == sections.end()) {

            qWarning("Syntax error at line %d: Entry found outside of any section.", currentLineNumber);

            return SectionMap();

        }

        Entry e;

        e.lineNumber = currentLineNumber;

        int equalPos = line.indexOf(QLatin1Char('='));

        if (equalPos == -1) {

            e.key = line;

        } else {

            e.key = line;

            e.key.truncate(equalPos);

            e.key = e.key.trimmed();

            e.value = line.mid(equalPos + 1).trimmed();

        }

        currentSection->append(e);

    }

    return sections;

}