view filestates.cpp @ 109:1721c580c10e

* Add a queueing mechanism for Hg actions, instead of refusing to start an action if something else is already happening.  This is essential now that actions can be prompted by asynchronous events (e.g. filesystem watcher).
 * Make Revert behave sensibly

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    EasyMercurial

    Based on HgExplorer by Jari Korhonen
    Copyright (c) 2010 Jari Korhonen
    Copyright (c) 2010 Chris Cannam
    Copyright (c) 2010 Queen Mary, University of London

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "filestates.h"

#include "debug.h"

#include <QMap>

FileStates::FileStates()
{
}

void FileStates::clearBuckets()
{
    m_modified.clear();
    m_added.clear();
    m_removed.clear();
    m_missing.clear();
    m_unknown.clear();
}

FileStates::State FileStates::charToState(QChar c, bool *ok)
{
    if (ok) *ok = true;
    if (c == 'M') return Modified;
    if (c == 'A') return Added;
    if (c == 'R') return Removed;
    if (c == '!') return Missing;
    if (c == '?') return Unknown;
    if (c == 'C') return Clean;
    if (ok) *ok = false;
    return Unknown;
}

QStringList *FileStates::stateToBucket(State s)
{
    switch (s) {
    case Clean: default: return 0; // not implemented yet
    case Modified: return &m_modified;
    case Added: return &m_added;
    case Unknown: return &m_unknown;
    case Removed: return &m_removed;
    case Missing: return &m_missing;
    }
}

void FileStates::parseStates(QString text)
{
    text.replace("\r\n", "\n");

    clearBuckets();

    QStringList lines = text.split("\n", QString::SkipEmptyParts);

    foreach (QString line, lines) {

        if (line.length() < 3 || line[1] != ' ') {
            continue;
        }

        QChar c = line[0];
        bool ok = false;
        State s = charToState(c, &ok);
        if (!ok) continue;

        QString file = line.right(line.length() - 2);
        QStringList *bucket = stateToBucket(s);
        bucket->push_back(file);
        m_stateMap[file] = s;
    }

    DEBUG << "FileStates: " << m_modified.size() << " modified, " << m_added.size()
            << " added, " << m_removed.size() << " removed, " << m_missing.size()
            << " missing, " << m_unknown.size() << " unknown" << endl;
}

QStringList FileStates::getFilesInState(State s) const
{
    QStringList *sl = const_cast<FileStates *>(this)->stateToBucket(s);
    if (sl) return *sl;
    else return QStringList();
}

FileStates::State FileStates::getStateOfFile(QString file) const
{
    if (m_stateMap.contains(file)) {
        return m_stateMap[file];
    }
    DEBUG << "FileStates: WARNING: getStateOfFile: file "
            << file << " is unknown to us: returning Unknown state, "
            << "but unknown to us is not supposed to be the same "
            << "thing as unknown state..."
            << endl;
    return Unknown;
}