src/patches/CommitsCursor.cpp

   1 /*
   2  * This file is part of the vng project
   3  * Copyright (C) 2008 Thomas Zander <tzander@trolltech.com>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "CommitsCursor.h"
  20 #include "CommitsMatcher.h"
  21
  22 #include <QDebug>
  23
  24 CommitsCursor::CommitsCursor(SelectionType selectionType)
  25     : m_currentIndex(1),
  26     m_oldestIndex(0),
  27     m_head("HEAD"),
  28     m_current(m_head),
  29     m_done(! m_head.isValid()),
  30     m_matcher(0),
  31     m_selectionType(selectionType)
  32 {
  33     if (selectionType == SelectRange)
  34         m_firstInBranch = m_head.firstCommitInBranch();
  35 }
  36
  37 CommitsCursor::~CommitsCursor()
  38 {
  39     delete m_matcher;
  40 }
  41
  42 int CommitsCursor::forward(Scope scope, bool skipAnswered)
  43 {
  44     Q_UNUSED(scope);
  45     Q_UNUSED(skipAnswered);
  46     // go to a parent commit
  47     int newIndex = m_currentIndex;
  48     if (m_current.previousCommitsCount() > 0) {
  49         Commit parent = m_current.previous()[0];
  50         while(true) {
  51             if (! parent.isValid())
  52                 return m_currentIndex;
  53             ++newIndex;
  54             CommitsMatcher::ExpectedAction action = CommitsMatcher::ShowPatch;
  55             if (m_matcher)
  56                 action = m_matcher->match(parent);
  57             if (action == CommitsMatcher::ShowPatch) {
  58                 m_current = parent;
  59                 m_currentIndex = newIndex;
  60                 return newIndex;
  61             }
  62             if (action == CommitsMatcher::Exit) {
  63                 m_done = true;
  64                 return m_currentIndex;
  65             }
  66             if (parent.previousCommitsCount() == 0) {// no more commits;
  67                 m_done = true;
  68                 return m_currentIndex;
  69             }
  70             parent = parent.previous()[0];
  71         }
  72     }
  73     return m_currentIndex;
  74 }
  75
  76 int CommitsCursor::back(Scope scope)
  77 {
  78     Q_UNUSED(scope);
  79     Commit c = m_current.next();
  80     int newIndex = m_currentIndex;
  81     while(true) {
  82         if (! c.isValid())
  83             return m_currentIndex;
  84         --newIndex;
  85         CommitsMatcher::ExpectedAction action = CommitsMatcher::ShowPatch;
  86         if (m_matcher)
  87             action = m_matcher->match(c);
  88         if (action == CommitsMatcher::ShowPatch) {
  89             m_current = c;
  90             if (m_current == m_firstInBranch)
  91                 m_done = true;
  92             m_currentIndex = newIndex;
  93             return m_currentIndex;
  94         }
  95         if (action == CommitsMatcher::Exit) {
  96             m_done = true;
  97             return m_currentIndex;
  98         }
  99         c = c.next();
 100     }
 101 }
 102
 103 void CommitsCursor::setResponse(bool response, Scope scope)
 104 {
 105     Q_UNUSED(scope);
 106     m_current.setAcceptance(response ? Vng::Accepted : Vng::Rejected);
 107     if ((m_selectionType == SelectRange && !response)
 108             || (m_selectionType == SelectOnePatch && response)) // exit when user says 'no'
 109         m_done = true;
 110     m_oldestIndex = qMax(m_oldestIndex, m_currentIndex);
 111 }
 112
 113 int CommitsCursor::count()
 114 {
 115     return -1; // TODO we _can_ count.. Its just not quite useful in most cases.
 116 }
 117
 118 void CommitsCursor::forceCount()
 119 {
 120     // TODO sure you want to do that??
 121 }
 122
 123 QString CommitsCursor::currentText() const
 124 {
 125     return QString("\n") +
 126         m_current.commitTime().toString() + QString("  ") + m_current.author() + QString("\n ") +
 127         m_current.logMessage();
 128 }
 129
 130 QString CommitsCursor::helpMessage() const
 131 {
 132     return QString(
 133         "How to use unrecord...\n"
 134         "y: unrecord this patch\n"
 135         "n: don't unrecord it\n\n"
 136         // "v: view this patch in full with pager\n"
 137         // "x: view a summary of this patch\n"
 138         "d: unrecord selected patches\n"
 139         "q: cancel unrecord\n\n"
 140         "j: skip to next patch\n"
 141         "k: back up to previous patch\n"
 142         "c: calculate number of patches\n"
 143         "h or ?: show this help\n");
 144 }
 145
 146 bool CommitsCursor::isValid() const
 147 {
 148     return !m_done && m_current.previousCommitsCount() > 0;
 149 }
 150
 151 QString CommitsCursor::allowedOptions() const
 152 {
 153     QString allowed = "ynq";
 154     if (m_selectionType == SelectRange)
 155         allowed += "djk";
 156 //   if (m_total == -1)
 157 //       allowed += "c";
 158     return allowed;
 159 }
 160
 161 Commit CommitsCursor::head()
 162 {
 163     return m_head;
 164 }
 165
 166 void CommitsCursor::setUseMatcher(bool use)
 167 {
 168     if (! use) {
 169         delete m_matcher;
 170         m_matcher = 0;
 171         return;
 172     }
 173     if (m_matcher)
 174         return;
 175     m_matcher = new CommitsMatcher();
 176 }
 177