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_firstInBranch(m_head.firstCommitInBranch()),
  30     m_done(! m_head.isValid()),
  31     m_matcher(0),
  32     m_selectionType(selectionType)
  33 {
  34 }
  35
  36 CommitsCursor::~CommitsCursor()
  37 {
  38     delete m_matcher;
  39 }
  40
  41 int CommitsCursor::forward(Scope scope, bool skipAnswered)
  42 {
  43     Q_UNUSED(scope);
  44     Q_UNUSED(skipAnswered);
  45     // go to a parent commit
  46     int newIndex = m_currentIndex;
  47     if (m_current.previousCommitsCount() > 0) {
  48         Commit parent = m_current.previous()[0];
  49         while(true) {
  50             if (! parent.isValid())
  51                 return m_currentIndex;
  52             ++newIndex;
  53             CommitsMatcher::ExpectedAction action = CommitsMatcher::ShowPatch;
  54             if (m_matcher)
  55                 action = m_matcher->match(parent);
  56             if (action == CommitsMatcher::ShowPatch) {
  57                 m_current = parent;
  58                 m_currentIndex = newIndex;
  59                 return newIndex;
  60             }
  61             if (action == CommitsMatcher::Exit) {
  62                 m_done = true;
  63                 return m_currentIndex;
  64             }
  65             if (parent.previousCommitsCount() == 0) {// no more commits;
  66                 m_done = true;
  67                 return m_currentIndex;
  68             }
  69             parent = parent.previous()[0];
  70         }
  71     }
  72     return m_currentIndex;
  73 }
  74
  75 int CommitsCursor::back(Scope scope)
  76 {
  77     Q_UNUSED(scope);
  78     Commit c = m_current.next();
  79     int newIndex = m_currentIndex;
  80     while(true) {
  81         if (! c.isValid())
  82             return m_currentIndex;
  83         --newIndex;
  84         CommitsMatcher::ExpectedAction action = CommitsMatcher::ShowPatch;
  85         if (m_matcher)
  86             action = m_matcher->match(c);
  87         if (action == CommitsMatcher::ShowPatch) {
  88             m_current = c;
  89             if (m_current == m_firstInBranch)
  90                 m_done = true;
  91             m_currentIndex = newIndex;
  92             return m_currentIndex;
  93         }
  94         if (action == CommitsMatcher::Exit) {
  95             m_done = true;
  96             return m_currentIndex;
  97         }
  98         c = c.next();
  99     }
 100 }
 101
 102 void CommitsCursor::setResponse(bool response, Scope scope)
 103 {
 104     Q_UNUSED(scope);
 105     m_current.setAcceptance(response ? Vng::Accepted : Vng::Rejected);
 106     if ((m_selectionType == SelectRange && !response)
 107             || (m_selectionType == SelectOnePatch && response)) // exit when user says 'no'
 108         m_done = true;
 109     m_oldestIndex = qMax(m_oldestIndex, m_currentIndex);
 110 }
 111
 112 int CommitsCursor::count()
 113 {
 114     return -1; // TODO we _can_ count.. Its just not quite useful in most cases.
 115 }
 116
 117 void CommitsCursor::forceCount()
 118 {
 119     // TODO sure you want to do that??
 120 }
 121
 122 QString CommitsCursor::currentText() const
 123 {
 124     return QString("\n") +
 125         m_current.commitTime().toString() + QString("  ") + m_current.author() + QString("\n ") +
 126         m_current.logMessage();
 127 }
 128
 129 QString CommitsCursor::helpMessage() const
 130 {
 131     return QString(
 132         "How to use unrecord...\n"
 133         "y: unrecord this patch\n"
 134         "n: don't unrecord it\n\n"
 135         // "v: view this patch in full with pager\n"
 136         // "x: view a summary of this patch\n"
 137         "d: unrecord selected patches\n"
 138         "q: cancel unrecord\n\n"
 139         "j: skip to next patch\n"
 140         "k: back up to previous patch\n"
 141         "c: calculate number of patches\n"
 142         "h or ?: show this help\n");
 143 }
 144
 145 bool CommitsCursor::isValid() const
 146 {
 147     return !m_done && m_current.previousCommitsCount() > 0;
 148 }
 149
 150 QString CommitsCursor::allowedOptions() const
 151 {
 152     QString allowed = "ynq";
 153     if (m_selectionType == SelectRange)
 154         allowed += "djk";
 155 //   if (m_total == -1)
 156 //       allowed += "c";
 157     return allowed;
 158 }
 159
 160 Commit CommitsCursor::head()
 161 {
 162     return m_head;
 163 }
 164
 165 void CommitsCursor::setUseMatcher(bool use)
 166 {
 167     if (! use) {
 168         delete m_matcher;
 169         m_matcher = 0;
 170         return;
 171     }
 172     if (m_matcher)
 173         return;
 174     m_matcher = new CommitsMatcher();
 175 }
 176