resourcefile.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

/****************************************************************************
**
** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at [e-mail].
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include <QtCore/QDir>
#include <QtCore/qdebug.h>

#include <QtGui/QIcon>
#include <QtGui/QApplication>
#include <QtGui/QImageReader>

#include <QtXml/QDomDocument>

#include "resourcefile_p.h"
#include <QtDesigner/abstractformbuilder.h>

namespace qdesigner_internal {

/******************************************************************************
** ResourceFile
*/

ResourceFile::ResourceFile(const QString &file_name)
{
    setFileName(file_name);
}

template <typename T>
static QList<T> uniqueItems(QList<T> list)
{
    QList<T> result;

    qSort(list.begin(), list.end());
    T last;
    bool first = true;
    foreach (const T &t, list) {
        if (first || t != last) {
            result.append(t);
            last = t;
        }
        first = false;
    }

    return result;
}

bool ResourceFile::load()
{
    m_error_message.clear();

    if (m_file_name.isEmpty()) {
        m_error_message = QApplication::translate("Designer", "file name is empty");
        return false;
    }

    QFile file(m_file_name);
    if (!file.open(QIODevice::ReadOnly)) {
        m_error_message = file.errorString();
        return false;
    }

    m_prefix_list.clear();

    QDomDocument doc;

    QString error_msg;
    int error_line, error_col;
    if (!doc.setContent(&file, &error_msg, &error_line, &error_col)) {
        m_error_message = QApplication::translate("Designer", "XML error on line %1, col %2: %3")
                    .arg(error_line).arg(error_col).arg(error_msg);
        return false;
    }

    QDomElement root = doc.firstChildElement(QLatin1String("RCC"));
    if (root.isNull()) {
        m_error_message = QApplication::translate("Designer", "no <RCC> root element");
        return false;
    }

    QDomElement relt = root.firstChildElement(QLatin1String("qresource"));
    for (; !relt.isNull(); relt = relt.nextSiblingElement(QLatin1String("qresource"))) {
        FileList file_list;
        QDomElement felt = relt.firstChildElement(QLatin1String("file"));
        for (; !felt.isNull(); felt = felt.nextSiblingElement(QLatin1String("file")))
            file_list.append(File(absolutePath(felt.text()), felt.attribute(QLatin1String("alias"))));

        QString prefix = fixPrefix(relt.attribute(QLatin1String("prefix")));
        if (prefix.isEmpty())
            prefix = QLatin1String("/");
        int idx = indexOfPrefix(prefix);
        if (idx == -1) {
            m_prefix_list.append(Prefix(prefix, uniqueItems(file_list)));
        } else {
            Prefix &pref = m_prefix_list[idx];
            pref.file_list += file_list;
            pref.file_list = uniqueItems(pref.file_list);
        }
    }

    return true;
}

bool ResourceFile::save()
{
    m_error_message.clear();

    if (m_file_name.isEmpty()) {
        m_error_message = QApplication::translate("Designer", "file name is empty");
        return false;
    }

    QFile file(m_file_name);
    if (!file.open(QIODevice::WriteOnly)) {
        m_error_message = file.errorString();
        return false;
    }

    QDomDocument doc;
    QDomElement root = doc.createElement(QLatin1String("RCC"));
    doc.appendChild(root);

    QStringList name_list = uniqueItems(prefixList());

    foreach (QString name, name_list) {
        FileList file_list;
        foreach (Prefix pref, m_prefix_list) {
            if (pref.name == name)
                file_list += pref.file_list;
        }
        file_list = uniqueItems(file_list);

        QDomElement relt = doc.createElement(QLatin1String("qresource"));
        root.appendChild(relt);
        relt.setAttribute(QLatin1String("prefix"), name);

        foreach (const File &file, file_list) {
            QDomElement felt = doc.createElement(QLatin1String("file"));
            relt.appendChild(felt);
            QString conv_file = relativePath(file.name).replace(QDir::separator(), QLatin1Char('/'));
            QDomText text = doc.createTextNode(conv_file);
            felt.appendChild(text);
            if (!file.alias.isEmpty())
                felt.setAttribute(QLatin1String("alias"), file.alias);
        }
    }

    QTextStream stream(&file);
    doc.save(stream, 4);

    return true;
}

int ResourceFile::matchPrefix(const QString &_path) const
{
    QString path = _path;

    if (!path.startsWith(QLatin1String(":")))
        return -1;

    path = path.mid(1);

    for (int i = 0; i < m_prefix_list.size(); ++i) {
        const Prefix &prefix = m_prefix_list.at(i);
        if (path.startsWith(prefix.name))
            return i;
    }

    return -1;
}

bool ResourceFile::split(const QString &_path, QString *prefix, QString *file) const
{
    prefix->clear();
    file->clear();

    QString path = _path;
    if (!path.startsWith(QLatin1String(":")))
        return false;
    path = path.mid(1);

    for (int i = 0; i < m_prefix_list.size(); ++i) {
        const Prefix &pref = m_prefix_list.at(i);
        if (!path.startsWith(pref.name))
            continue;

        *prefix = pref.name;
        if (pref.name == QLatin1String("/"))
            *file = path.mid(1);
        else
            *file = path.mid(pref.name.size() + 1);

        if (pref.file_list.contains(absolutePath(*file)))
            return true;
    }

    return false;
}

QString ResourceFile::resolvePath(const QString &path) const
{
    QString prefix, file;
    if (split(path, &prefix, &file))
        return absolutePath(file);

    return QString();
}

QStringList ResourceFile::prefixList() const
{
    QStringList result;
    for (int i = 0; i < m_prefix_list.size(); ++i)
        result.append(m_prefix_list.at(i).name);
    return result;
}

bool ResourceFile::isEmpty() const
{
    return m_file_name.isEmpty() && m_prefix_list.isEmpty();
}

QStringList ResourceFile::fileList(int pref_idx) const
{
    const FileList &abs_file_list = m_prefix_list.at(pref_idx).file_list;
    QStringList result;
    foreach (const File &abs_file, abs_file_list)
        result.append(relativePath(abs_file.name));
    return result;
}

void ResourceFile::addFile(int prefix_idx, const QString &file)
{
    m_prefix_list[prefix_idx].file_list.append(absolutePath(file));
}

void ResourceFile::addPrefix(const QString &prefix)
{
    QString fixed_prefix = fixPrefix(prefix);
    if (indexOfPrefix(fixed_prefix) != -1)
        return;
    m_prefix_list.append(fixed_prefix);
}

void ResourceFile::removePrefix(int prefix_idx)
{
    m_prefix_list.removeAt(prefix_idx);
}

void ResourceFile::removeFile(int prefix_idx, int file_idx)
{
    m_prefix_list[prefix_idx].file_list.removeAt(file_idx);
}

void ResourceFile::replacePrefix(int prefix_idx, const QString &prefix)
{
    m_prefix_list[prefix_idx].name = fixPrefix(prefix);
}

void ResourceFile::replaceFile(int pref_idx, int file_idx, const QString &file)
{
    m_prefix_list[pref_idx].file_list[file_idx] = file;
}

int ResourceFile::indexOfPrefix(const QString &prefix) const
{
    QString fixed_prefix = fixPrefix(prefix);
    for (int i = 0; i < m_prefix_list.size(); ++i) {
        if (m_prefix_list.at(i).name == fixed_prefix)
            return i;
    }
    return -1;
}

int ResourceFile::indexOfFile(int pref_idx, const QString &file) const
{
    return m_prefix_list.at(pref_idx).file_list.indexOf(absolutePath(file));
}

QString ResourceFile::relativePath(const QString &abs_path) const
{
    if (m_file_name.isEmpty() || QFileInfo(abs_path).isRelative())
         return abs_path;

    QFileInfo fileInfo(m_file_name);
    return fileInfo.absoluteDir().relativeFilePath(abs_path);
}

QString ResourceFile::absolutePath(const QString &rel_path) const
{
    QFileInfo fi(rel_path);
    if (fi.isAbsolute())
        return rel_path;

    return QDir::cleanPath(QFileInfo(m_file_name).path() + QDir::separator() + rel_path);
}

bool ResourceFile::contains(const QString &prefix, const QString &file) const
{
    int pref_idx = indexOfPrefix(prefix);
    if (pref_idx == -1)
        return false;
    if (file.isEmpty())
        return true;
    return m_prefix_list.at(pref_idx).file_list.contains(absolutePath(file));
}

bool ResourceFile::contains(int pref_idx, const QString &file) const
{
    return m_prefix_list.at(pref_idx).file_list.contains(absolutePath(file));
}

QString ResourceFile::fixPrefix(const QString &prefix)
{
    QString result = QLatin1String("/");
    for (int i = 0; i < prefix.size(); ++i) {
        QChar c = prefix.at(i);
        if (c == QLatin1Char('/') && result.at(result.size() - 1) == QLatin1Char('/'))
            continue;
        result.append(c);
    }