fbreader/src/collection/BookCollection.cpp

   1 /*
   2  * Copyright (C) 2004-2008 Geometer Plus <contact@geometerplus.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  */
  19
  20 #include <queue>
  21 #include <algorithm>
  22
  23 #include <ZLibrary.h>
  24 #include <ZLStringUtil.h>
  25 #include <ZLFile.h>
  26 #include <ZLDir.h>
  27
  28 #include "BookCollection.h"
  29 #include "BookList.h"
  30 #include "../description/BookDescription.h"
  31 #include "../description/BookDescriptionUtil.h"
  32 #include "../description/Author.h"
  33 #include "../formats/FormatPlugin.h"
  34
  35 bool DescriptionComparator::operator() (const BookDescriptionPtr d1, const BookDescriptionPtr d2) {
  36         const std::string &sequenceName1 = d1->sequenceName();
  37         const std::string &sequenceName2 = d2->sequenceName();
  38         if (sequenceName1.empty() && sequenceName2.empty()) {
  39                 return d1->title() < d2->title();
  40         }
  41         if (sequenceName1.empty()) {
  42                 return d1->title() < sequenceName2;
  43         }
  44         if (sequenceName2.empty()) {
  45                 return sequenceName1 <= d2->title();
  46         }
  47         if (sequenceName1 != sequenceName2) {
  48                 return sequenceName1 < sequenceName2;
  49         }
  50         return d1->numberInSequence() < d2->numberInSequence();
  51 }
  52
  53 static const std::string OPTIONS = "Options";
  54
  55 BookCollection::BookCollection() :
  56         PathOption(ZLCategoryKey::CONFIG, OPTIONS, "BookPath", ""),
  57         ScanSubdirsOption(ZLCategoryKey::CONFIG, OPTIONS, "ScanSubdirs", false),
  58         myDoStrongRebuild(true),
  59         myDoWeakRebuild(false) {
  60 }
  61
  62 void BookCollection::rebuild(bool strong) {
  63         if (strong) {
  64                 myDoStrongRebuild = true;
  65         } else {
  66                 myDoWeakRebuild = true;
  67         }
  68 }
  69
  70 void BookCollection::collectBookFileNames(std::set<std::string> &bookFileNames) const {
  71         std::set<std::string> dirs;
  72         collectDirNames(dirs);
  73
  74         for (std::set<std::string>::iterator it = dirs.begin(); it != dirs.end(); ++it) {
  75                 std::vector<std::string> files;
  76                 shared_ptr<ZLDir> dir = ZLFile(*it).directory();
  77                 if (dir.isNull()) {
  78                         continue;
  79                 }
  80                 dir->collectFiles(files, false);
  81                 if (!files.empty()) {
  82                         for (std::vector<std::string>::const_iterator jt = files.begin(); jt != files.end(); ++jt) {
  83                                 const std::string fileName = dir->itemPath(*jt);
  84                                 ZLFile file(fileName);
  85                                 if (PluginCollection::instance().plugin(file, true) != 0) {
  86                                         bookFileNames.insert(fileName);
  87                                 // TODO: zip -> any archive
  88                                 } else if (file.extension() == "zip") {
  89                                         if (!BookDescriptionUtil::checkInfo(file)) {
  90                                                 BookDescriptionUtil::resetZipInfo(file);
  91                                                 BookDescriptionUtil::saveInfo(file);
  92                                         }
  93                                         std::vector<std::string> zipEntries;
  94                                         BookDescriptionUtil::listZipEntries(file, zipEntries);
  95                                         for (std::vector<std::string>::const_iterator zit = zipEntries.begin(); zit != zipEntries.end(); ++zit) {
  96                                                 bookFileNames.insert(*zit);
  97                                         }
  98                                 }
  99                         }
 100                 }
 101         }
 102 }
 103
 104 bool BookCollection::synchronize() const {
 105         bool doStrongRebuild =
 106                 myDoStrongRebuild ||
 107                 (myScanSubdirs != ScanSubdirsOption.value()) ||
 108                 (myPath != PathOption.value());
 109
 110         if (!doStrongRebuild && !myDoWeakRebuild) {
 111                 return false;
 112         }
 113
 114         myPath = PathOption.value();
 115         myScanSubdirs = ScanSubdirsOption.value();
 116         myDoWeakRebuild = false;
 117         myDoStrongRebuild = false;
 118
 119         if (doStrongRebuild) {
 120                 myAuthors.clear();
 121                 myCollection.clear();
 122                 myExternalBooks.clear();
 123
 124                 std::set<std::string> fileNamesSet;
 125                 collectBookFileNames(fileNamesSet);
 126                 for (std::set<std::string>::iterator it = fileNamesSet.begin(); it != fileNamesSet.end(); ++it) {
 127                         addDescription(BookDescription::getDescription(*it));
 128                 }
 129
 130                 BookList bookList;
 131                 const std::set<std::string> &bookListSet = bookList.fileNames();
 132                 for (std::set<std::string>::const_iterator it = bookListSet.begin(); it != bookListSet.end(); ++it) {
 133                         if (fileNamesSet.find(*it) == fileNamesSet.end()) {
 134                                 BookDescriptionPtr description = BookDescription::getDescription(*it);
 135                                 if (!description.isNull()) {
 136                                         addDescription(description);
 137                                         myExternalBooks.insert(description);
 138                                 }
 139                         }
 140                 }
 141         } else {
 142                 BookList bookList;
 143                 const std::set<std::string> &bookListSet = bookList.fileNames();
 144                 std::vector<std::string> fileNames;
 145                 for (std::map<AuthorPtr,Books>::const_iterator it = myCollection.begin(); it != myCollection.end(); ++it) {
 146                         const Books &books = it->second;
 147                         for (Books::const_iterator jt = books.begin(); jt != books.end(); ++jt) {
 148                                 if ((myExternalBooks.find(*jt) == myExternalBooks.end()) ||
 149                                                 (bookListSet.find((*jt)->fileName()) != bookListSet.end())) {
 150                                         fileNames.push_back((*jt)->fileName());
 151                                 }
 152                         }
 153                 }
 154                 myCollection.clear();
 155                 myAuthors.clear();
 156                 for (std::vector<std::string>::iterator it = fileNames.begin(); it != fileNames.end(); ++it) {
 157                         addDescription(BookDescription::getDescription(*it, false));
 158                 }
 159         }
 160
 161         std::sort(myAuthors.begin(), myAuthors.end(), AuthorComparator());
 162         DescriptionComparator descriptionComparator;
 163         for (std::map<AuthorPtr,Books>::iterator it = myCollection.begin(); it != myCollection.end(); ++it) {
 164                 std::sort((*it).second.begin(), (*it).second.end(), descriptionComparator);
 165         }
 166         return true;
 167 }
 168
 169 void BookCollection::collectDirNames(std::set<std::string> &nameSet) const {
 170         std::queue<std::string> nameQueue;
 171
 172         std::string path = myPath;
 173         int pos = path.find(ZLibrary::PathDelimiter);
 174         while (pos != -1) {
 175                 nameQueue.push(path.substr(0, pos));
 176                 path.erase(0, pos + 1);
 177                 pos = path.find(ZLibrary::PathDelimiter);
 178         }
 179         if (!path.empty()) {
 180                 nameQueue.push(path);
 181         }
 182
 183         while (!nameQueue.empty()) {
 184                 std::string name = nameQueue.front();
 185                 nameQueue.pop();
 186                 if (nameSet.find(name) == nameSet.end()) {
 187                         if (myScanSubdirs) {
 188                                 shared_ptr<ZLDir> dir = ZLFile(name).directory();
 189                                 if (!dir.isNull()) {
 190                                         std::vector<std::string> subdirs;
 191                                         dir->collectSubDirs(subdirs, false);
 192                                         for (std::vector<std::string>::const_iterator it = subdirs.begin(); it != subdirs.end(); ++it) {
 193                                                 nameQueue.push(dir->itemPath(*it));
 194                                         }
 195                                 }
 196                         }
 197                         nameSet.insert(name);
 198                 }
 199         }
 200 }
 201
 202 BookCollection::~BookCollection() {
 203 }
 204
 205 void BookCollection::addDescription(BookDescriptionPtr description) const {
 206         if (description.isNull()) {
 207                 return;
 208         }
 209
 210         AuthorPtr author = description->author();
 211         const std::string &displayName = author->displayName();
 212         const std::string &sortKey = author->sortKey();
 213
 214         std::map<AuthorPtr,Books>::iterator it = myCollection.begin();
 215         for (; it != myCollection.end(); ++it) {
 216                 AuthorPtr author1 = (*it).first;
 217                 if ((author1->sortKey() == sortKey) && (author1->displayName() == displayName)) {
 218                         break;
 219                 }
 220         }
 221         if (it != myCollection.end()) {
 222                 (*it).second.push_back(description);
 223         } else {
 224                 Books books;
 225                 books.push_back(description);
 226                 myCollection.insert(std::pair<AuthorPtr,Books>(author, books));
 227                 myAuthors.push_back(author);
 228         }
 229 }