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