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#include "addresshelper_p.h"
#include <qpair.h>

QTM_BEGIN_NAMESPACE
static QPair<int, int> findDelimiters(const QString& text)
{
    int first = -1;
    int second = -1;

    bool quoted = false;
    bool escaped = false;

    const QChar* const begin = text.constData();
    const QChar* const end = begin + text.length();
    for (const QChar* it = begin; it != end; ++it ) {
        if ( !escaped && ( *it == '\\' ) ) {
            escaped = true;
            continue;
        }

        if ( !quoted && *it == '"' && !escaped ) {
            quoted = true;
        }
        else if ( quoted && *it == '"' && !escaped ) {
            quoted = false;
        }

        if ( !quoted ) {
            if ( first == -1 && *it == '<' ) {
                first = (it - begin);
            }
            else if ( second == -1 && *it == '>' ) {
                second = (it - begin);
                break;
            }
        }

        escaped = false;
    }

    return qMakePair(first, second);
}

void qParseMailbox(QString& input, QString& name, QString& address, QString& suffix, bool &startDelimeterFound, bool &endDelimeterFound)
{
    // See if there is a trailing suffix
    int pos = input.indexOf("/TYPE=");
    if (pos != -1)
    {
        suffix = input.mid(pos + 6);
        input = input.left(pos);
    }

    // Separate the email address from the name
    QPair<int, int> delimiters = findDelimiters(input);

    if (delimiters.first == -1 && delimiters.second == -1)
    {
        name = address = input.trimmed();
    }
    else
    {
        if (delimiters.first == -1)
        {
            // Unmatched '>'
            address = input.left( delimiters.second );
            if ( name.isEmpty() )
                name = address;
        }
        else
        {
            name = input.left( delimiters.first );

            if (delimiters.second == -1)
                address = input.right(input.length() - delimiters.first - 1);
            else
                address = input.mid(delimiters.first + 1, (delimiters.second - delimiters.first - 1)).trimmed();
        }
        name = name.trimmed();
    }

    if (delimiters.first == -1)
        startDelimeterFound = false;
    else
        startDelimeterFound = true;

    if (delimiters.second == -1)
        endDelimeterFound = false;
    else
        endDelimeterFound = true;
}

QTM_END_NAMESPACE