src/DepTable.cpp

   1 /**
   2  * \file DepTable.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author Ben Stanley
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "DepTable.h"
  16
  17 #include "debug.h"
  18
  19 #include "support/lyxlib.h"
  20 #include "support/filetools.h"
  21 #include "support/lstrings.h"
  22 #include "support/lyxtime.h"
  23
  24 #include <sys/stat.h>
  25
  26 #include <fstream>
  27
  28 #ifndef CXX_GLOBAL_CSTD
  29 using std::time;
  30 #endif
  31 using std::endl;
  32 using std::flush;
  33 using std::getline;
  34 using std::string;
  35 using std::ofstream;
  36 using std::ifstream;
  37
  38
  39 namespace lyx {
  40
  41 using support::FileName;
  42 using support::ltrim;
  43 using support::onlyFilename;
  44 using support::suffixIs;
  45 using support::sum;
  46
  47 inline
  48 bool DepTable::dep_info::changed() const
  49 {
  50         return crc_prev != crc_cur && crc_cur != 0;
  51 }
  52
  53
  54 void DepTable::insert(FileName const & f, bool upd)
  55 {
  56         if (deplist.find(f) == deplist.end()) {
  57                 dep_info di;
  58                 di.crc_prev = 0;
  59                 if (upd) {
  60                         LYXERR(Debug::DEPEND) << " CRC..." << flush;
  61                         di.crc_cur = sum(f);
  62                         LYXERR(Debug::DEPEND) << "done." << endl;
  63                         struct stat f_info;
  64                         stat(f.toFilesystemEncoding().c_str(), &f_info);
  65                         di.mtime_cur = f_info.st_mtime;
  66                 } else {
  67                         di.crc_cur = 0;
  68                         di.mtime_cur = 0;
  69                 }
  70                 deplist[f] = di;
  71         } else {
  72                 LYXERR(Debug::DEPEND) << " Already in DepTable" << endl;
  73         }
  74 }
  75
  76
  77 void DepTable::update()
  78 {
  79         LYXERR(Debug::DEPEND) << "Updating DepTable..." << endl;
  80         time_type const start_time = current_time();
  81
  82         DepList::iterator itr = deplist.begin();
  83         while (itr != deplist.end()) {
  84                 dep_info &di = itr->second;
  85
  86                 struct stat f_info;
  87                 if (stat(itr->first.toFilesystemEncoding().c_str(), &f_info) == 0) {
  88                         if (di.mtime_cur == f_info.st_mtime) {
  89                                 di.crc_prev = di.crc_cur;
  90                                 LYXERR(Debug::DEPEND) << itr->first << " same mtime" << endl;
  91                         } else {
  92                                 di.crc_prev = di.crc_cur;
  93                                 LYXERR(Debug::DEPEND) << itr->first << " CRC... " << flush;
  94                                 di.crc_cur = sum(itr->first);
  95                                 LYXERR(Debug::DEPEND) << "done" << endl;
  96                         }
  97                 } else {
  98                         // file doesn't exist
  99                         // remove stale files - if it's re-created, it
 100                         // will be re-inserted by deplog.
 101                         LYXERR(Debug::DEPEND) << itr->first
 102                                 << " doesn't exist. removing from DepTable." << endl;
 103                         DepList::iterator doomed = itr++;
 104                         deplist.erase(doomed);
 105                         continue;
 106                 }
 107
 108                 if (lyxerr.debugging(Debug::DEPEND)) {
 109                         if (di.changed())
 110                                 lyxerr << " +";
 111                         lyxerr << endl;
 112                 }
 113                 ++itr;
 114         }
 115         time_type const time_sec = current_time() - start_time;
 116         LYXERR(Debug::DEPEND) << "Finished updating DepTable ("
 117                 << time_sec << " sec)." << endl;
 118 }
 119
 120
 121 bool DepTable::sumchange() const
 122 {
 123         DepList::const_iterator cit = deplist.begin();
 124         DepList::const_iterator end = deplist.end();
 125         for (; cit != end; ++cit) {
 126                 if (cit->second.changed()) return true;
 127         }
 128         return false;
 129 }
 130
 131
 132 bool DepTable::haschanged(FileName const & fil) const
 133 {
 134         DepList::const_iterator cit = deplist.find(fil);
 135         if (cit != deplist.end()) {
 136                 if (cit->second.changed())
 137                         return true;
 138         }
 139         return false;
 140 }
 141
 142
 143 bool DepTable::extchanged(string const & ext) const
 144 {
 145         DepList::const_iterator cit = deplist.begin();
 146         DepList::const_iterator end = deplist.end();
 147         for (; cit != end; ++cit) {
 148                 if (suffixIs(cit->first.absFilename(), ext)) {
 149                         if (cit->second.changed())
 150                                 return true;
 151                 }
 152         }
 153         return false;
 154 }
 155
 156
 157 bool DepTable::ext_exist(string const & ext) const
 158 {
 159         DepList::const_iterator cit = deplist.begin();
 160         DepList::const_iterator end = deplist.end();
 161         for (; cit != end; ++cit) {
 162                 if (suffixIs(cit->first.absFilename(), ext)) {
 163                         return true;
 164                 }
 165         }
 166         return false;
 167 }
 168
 169
 170 bool DepTable::exist(FileName const & fil) const
 171 {
 172         return deplist.find(fil) != deplist.end();
 173 }
 174
 175
 176 void DepTable::remove_files_with_extension(string const & suf)
 177 {
 178         DepList::iterator cit = deplist.begin();
 179         DepList::iterator end = deplist.end();
 180         while (cit != end) {
 181                 if (suffixIs(cit->first.absFilename(), suf)) {
 182                         // Can't erase the current iterator, but we
 183                         // can increment and then erase.
 184                         // Deplist is a map so only the erased
 185                         // iterator is invalidated.
 186                         DepList::iterator doomed = cit++;
 187                         deplist.erase(doomed);
 188                         continue;
 189                 }
 190                 ++cit;
 191         }
 192 }
 193
 194
 195 void DepTable::remove_file(FileName const & filename)
 196 {
 197         DepList::iterator cit = deplist.begin();
 198         DepList::iterator end = deplist.end();
 199         while (cit != end) {
 200                 if (cit->first == filename) {
 201                         // Can't erase the current iterator, but we
 202                         // can increment and then erase.
 203                         // deplist is a map so only the erased
 204                         // iterator is invalidated.
 205                         DepList::iterator doomed = cit++;
 206                         deplist.erase(doomed);
 207                         continue;
 208                 }
 209                 ++cit;
 210         }
 211 }
 212
 213
 214 void DepTable::write(FileName const & f) const
 215 {
 216         ofstream ofs(f.toFilesystemEncoding().c_str());
 217         DepList::const_iterator cit = deplist.begin();
 218         DepList::const_iterator end = deplist.end();
 219         for (; cit != end; ++cit) {
 220                 // Store the second (most recently calculated)
 221                 // CRC value.
 222                 // The older one is effectively set to 0 upon re-load.
 223                 LYXERR(Debug::DEPEND) << "Write dep: "
 224                        << cit->second.crc_cur << ' '
 225                        << cit->second.mtime_cur << ' '
 226                        << cit->first << endl;
 227
 228                 ofs << cit->second.crc_cur << ' '
 229                     << cit->second.mtime_cur << ' '
 230                     << cit->first << endl;
 231         }
 232 }
 233
 234
 235 bool DepTable::read(FileName const & f)
 236 {
 237         ifstream ifs(f.toFilesystemEncoding().c_str());
 238         string nome;
 239         dep_info di;
 240         // This doesn't change through the loop.
 241         di.crc_prev = 0;
 242
 243         while (ifs >> di.crc_cur >> di.mtime_cur && getline(ifs, nome)) {
 244                 nome = ltrim(nome);
 245
 246                 LYXERR(Debug::DEPEND) << "Read dep: "
 247                        << di.crc_cur << ' ' << di.mtime_cur << ' ' << nome << endl;
 248
 249                 deplist[FileName(nome)] = di;
 250         }
 251         return deplist.size();
 252 }
 253
 254
 255 } // namespace lyx