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#include "UriReference.hxx"

#include "osl/diagnose.h"
#include "osl/mutex.hxx"
#include "rtl/string.h"
#include "rtl/ustrbuf.hxx"
#include "rtl/ustring.hxx"
#include "sal/types.h"

namespace css = com::sun::star;
using stoc::uriproc::UriReference;

UriReference::UriReference(
    rtl::OUString const & scheme, bool bIsHierarchical, bool bHasAuthority,
    rtl::OUString const & authority, rtl::OUString const & path,
    bool bHasQuery, rtl::OUString const & query):
    m_scheme(scheme),
    m_authority(authority),
    m_path(path),
    m_query(query),
    m_isHierarchical(bIsHierarchical),
    m_hasAuthority(bHasAuthority),
    m_hasQuery(bHasQuery),
    m_hasFragment(false)
{
    OSL_ASSERT(!scheme.isEmpty() || bIsHierarchical);
    OSL_ASSERT(!bHasAuthority || bIsHierarchical);
    OSL_ASSERT(authority.isEmpty() || bHasAuthority);
    OSL_ASSERT(!bHasQuery || bIsHierarchical);
    OSL_ASSERT(query.isEmpty() || bHasQuery);
}

UriReference::~UriReference() {}

rtl::OUString UriReference::getUriReference() throw (css::uno::RuntimeException)
{
    osl::MutexGuard g(m_mutex);
    rtl::OUStringBuffer buf;
    if (!m_scheme.isEmpty()) {
        buf.append(m_scheme);
        buf.append(static_cast< sal_Unicode >(':'));
    }
    appendSchemeSpecificPart(buf);
    if (m_hasFragment) {
        buf.append(static_cast< sal_Unicode >('#'));
        buf.append(m_fragment);
    }
    return buf.makeStringAndClear();
}

sal_Bool UriReference::isAbsolute() throw (css::uno::RuntimeException) {
    return !m_scheme.isEmpty();
}

rtl::OUString UriReference::getScheme() throw (css::uno::RuntimeException) {
    return m_scheme;
}

rtl::OUString UriReference::getSchemeSpecificPart()
    throw (css::uno::RuntimeException)
{
    osl::MutexGuard g(m_mutex);
    rtl::OUStringBuffer buf;
    appendSchemeSpecificPart(buf);
    return buf.makeStringAndClear();
}

sal_Bool UriReference::isHierarchical() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_isHierarchical;
}

sal_Bool UriReference::hasAuthority() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_hasAuthority;
}

rtl::OUString UriReference::getAuthority() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_authority;
}

rtl::OUString UriReference::getPath() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_path;
}

sal_Bool UriReference::hasRelativePath() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_isHierarchical && !m_hasAuthority
        && (m_path.isEmpty() || m_path[0] != '/');
}

sal_Int32 UriReference::getPathSegmentCount() throw (css::uno::RuntimeException)
{
    osl::MutexGuard g(m_mutex);
    if (!m_isHierarchical || m_path.isEmpty()) {
        return 0;
    } else {
        sal_Int32 n = m_path[0] == '/' ? 0 : 1;
        for (sal_Int32 i = 0;; ++i) {
            i = m_path.indexOf('/', i);
            if (i < 0) {
                break;
            }
            ++n;
        }
        return n;
    }
}

rtl::OUString UriReference::getPathSegment(sal_Int32 index)
    throw (css::uno::RuntimeException)
{
    osl::MutexGuard g(m_mutex);
    if (m_isHierarchical && !m_path.isEmpty() && index >= 0) {
        for (sal_Int32 i = m_path[0] == '/' ? 1 : 0;; ++i) {
            if (index-- == 0) {
                sal_Int32 j = m_path.indexOf('/', i);
                return j < 0 ? m_path.copy(i) : m_path.copy(i, j - i);
            }
            i = m_path.indexOf('/', i);
            if (i < 0) {
                break;
            }
        }
    }
    return rtl::OUString();
}

sal_Bool UriReference::hasQuery() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_hasQuery;
}

rtl::OUString UriReference::getQuery() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_query;
}

sal_Bool UriReference::hasFragment() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_hasFragment;
}

rtl::OUString UriReference::getFragment() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    return m_fragment;
}

void UriReference::setFragment(rtl::OUString const & fragment)
    throw (css::uno::RuntimeException)
{
    osl::MutexGuard g(m_mutex);
    m_hasFragment = true;
    m_fragment = fragment;
}

void UriReference::clearFragment() throw (css::uno::RuntimeException) {
    osl::MutexGuard g(m_mutex);
    m_hasFragment = false;
    m_fragment = rtl::OUString();
}

void UriReference::appendSchemeSpecificPart(rtl::OUStringBuffer & buffer) const
{
    if (m_hasAuthority) {
        buffer.appendAscii(RTL_CONSTASCII_STRINGPARAM("//"));
        buffer.append(m_authority);
    }
    buffer.append(m_path);
    if (m_hasQuery) {
        buffer.append(static_cast< sal_Unicode >('?'));
        buffer.append(m_query);
    }
}

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