src/DepTable.C

   1 /**
   2  * \file DepTable.C
   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
  29 namespace lyx {
  30
  31 #ifndef CXX_GLOBAL_CSTD
  32 using std::time;
  33 #endif
  34
  35 using support::FileName;
  36 using support::ltrim;
  37 using support::makeAbsPath;
  38 using support::onlyFilename;
  39 using support::suffixIs;
  40 using support::sum;
  41
  42 using std::endl;
  43 using std::flush;
  44 using std::getline;
  45 using std::string;
  46 using std::ofstream;
  47 using std::ifstream;
  48
  49 inline
  50 bool DepTable::dep_info::changed() const
  51 {
  52         return crc_prev != crc_cur && crc_cur != 0;
  53 }
  54
  55
  56 void DepTable::insert(FileName const & f, bool upd)
  57 {
  58         if (deplist.find(f) == deplist.end()) {
  59                 dep_info di;
  60                 di.crc_prev = 0;
  61                 if (upd) {
  62                         lyxerr[Debug::DEPEND] << " CRC..." << flush;
  63                         di.crc_cur = sum(f);
  64                         lyxerr[Debug::DEPEND] << "done." << endl;
  65                         struct stat f_info;
  66                         stat(f.toFilesystemEncoding().c_str(), &f_info);
  67                         di.mtime_cur = f_info.st_mtime;
  68                 } else {
  69                         di.crc_cur = 0;
  70                         di.mtime_cur = 0;
  71                 }
  72                 deplist[f] = di;
  73         } else {
  74                 lyxerr[Debug::DEPEND] << " Already in DepTable" << endl;
  75         }
  76 }
  77
  78
  79 void DepTable::update()
  80 {
  81         lyxerr[Debug::DEPEND] << "Updating DepTable..." << endl;
  82         time_type const start_time = current_time();
  83
  84         DepList::iterator itr = deplist.begin();
  85         while (itr != deplist.end()) {
  86                 dep_info &di = itr->second;
  87
  88                 struct stat f_info;
  89                 if (stat(itr->first.toFilesystemEncoding().c_str(), &f_info) == 0) {
  90                         if (di.mtime_cur == f_info.st_mtime) {
  91                                 di.crc_prev = di.crc_cur;
  92                                 lyxerr[Debug::DEPEND] << itr->first << " same mtime" << endl;
  93                         } else {
  94                                 di.crc_prev = di.crc_cur;
  95                                 lyxerr[Debug::DEPEND] << itr->first << " CRC... " << flush;
  96                                 di.crc_cur = sum(itr->first);
  97                                 lyxerr[Debug::DEPEND] << "done" << endl;
  98                         }
  99                 } else {
 100                         // file doesn't exist
 101                         // remove stale files - if it's re-created, it
 102                         // will be re-inserted by deplog.
 103                         lyxerr[Debug::DEPEND] << itr->first
 104                                 << " doesn't exist. removing from DepTable." << endl;
 105                         DepList::iterator doomed = itr++;
 106                         deplist.erase(doomed);
 107                         continue;
 108                 }
 109
 110                 if (lyxerr.debugging(Debug::DEPEND)) {
 111                         if (di.changed())
 112                                 lyxerr << " +";
 113                         lyxerr << endl;
 114                 }
 115                 ++itr;
 116         }
 117         time_type const time_sec = current_time() - start_time;
 118         lyxerr[Debug::DEPEND] << "Finished updating DepTable ("
 119                 << time_sec << " sec)." << endl;
 120 }
 121
 122
 123 bool DepTable::sumchange() const
 124 {
 125         DepList::const_iterator cit = deplist.begin();
 126         DepList::const_iterator end = deplist.end();
 127         for (; cit != end; ++cit) {
 128                 if (cit->second.changed()) return true;
 129         }
 130         return false;
 131 }
 132
 133
 134 bool DepTable::haschanged(FileName const & fil) const
 135 {
 136         DepList::const_iterator cit = deplist.find(fil);
 137         if (cit != deplist.end()) {
 138                 if (cit->second.changed())
 139                         return true;
 140         }
 141         return false;
 142 }
 143
 144
 145 bool DepTable::extchanged(string const & ext) const
 146 {
 147         DepList::const_iterator cit = deplist.begin();
 148         DepList::const_iterator end = deplist.end();
 149         for (; cit != end; ++cit) {
 150                 if (suffixIs(cit->first.absFilename(), ext)) {
 151                         if (cit->second.changed())
 152                                 return true;
 153                 }
 154         }
 155         return false;
 156 }
 157
 158
 159 bool DepTable::ext_exist(string const & ext) const
 160 {
 161         DepList::const_iterator cit = deplist.begin();
 162         DepList::const_iterator end = deplist.end();
 163         for (; cit != end; ++cit) {
 164                 if (suffixIs(cit->first.absFilename(), ext)) {
 165                         return true;
 166                 }
 167         }
 168         return false;
 169 }
 170
 171
 172 bool DepTable::exist(FileName const & fil) const
 173 {
 174         return deplist.find(fil) != deplist.end();
 175 }
 176
 177
 178 void DepTable::remove_files_with_extension(string const & suf)
 179 {
 180         DepList::iterator cit = deplist.begin();
 181         DepList::iterator end = deplist.end();
 182         while (cit != end) {
 183                 if (suffixIs(cit->first.absFilename(), suf)) {
 184                         // Can't erase the current iterator, but we
 185                         // can increment and then erase.
 186                         // Deplist is a map so only the erased
 187                         // iterator is invalidated.
 188                         DepList::iterator doomed = cit++;
 189                         deplist.erase(doomed);
 190                         continue;
 191                 }
 192                 ++cit;
 193         }
 194 }
 195
 196
 197 void DepTable::remove_file(FileName const & filename)
 198 {
 199         DepList::iterator cit = deplist.begin();
 200         DepList::iterator end = deplist.end();
 201         while (cit != end) {
 202                 if (cit->first == filename) {
 203                         // Can't erase the current iterator, but we
 204                         // can increment and then erase.
 205                         // deplist is a map so only the erased
 206                         // iterator is invalidated.
 207                         DepList::iterator doomed = cit++;
 208                         deplist.erase(doomed);
 209                         continue;
 210                 }
 211                 ++cit;
 212         }
 213 }
 214
 215
 216 void DepTable::write(FileName const & f) const
 217 {
 218         ofstream ofs(f.toFilesystemEncoding().c_str());
 219         DepList::const_iterator cit = deplist.begin();
 220         DepList::const_iterator end = deplist.end();
 221         for (; cit != end; ++cit) {
 222                 if (lyxerr.debugging(Debug::DEPEND)) {
 223                         // Store the second (most recently calculated)
 224                         // CRC value.
 225                         // The older one is effectively set to 0 upon re-load.
 226                         lyxerr << "Write dep: "
 227                                << cit->second.crc_cur << ' '
 228                                << cit->second.mtime_cur << ' '
 229                                << cit->first << endl;
 230                 }
 231                 ofs << cit->second.crc_cur << ' '
 232                     << cit->second.mtime_cur << ' '
 233                     << cit->first << endl;
 234         }
 235 }
 236
 237
 238 bool DepTable::read(FileName const & f)
 239 {
 240         ifstream ifs(f.toFilesystemEncoding().c_str());
 241         string nome;
 242         dep_info di;
 243         // This doesn't change through the loop.
 244         di.crc_prev = 0;
 245
 246         while (ifs >> di.crc_cur >> di.mtime_cur && getline(ifs, nome)) {
 247                 nome = ltrim(nome);
 248                 if (lyxerr.debugging(Debug::DEPEND)) {
 249                         lyxerr << "Read dep: "
 250                                << di.crc_cur << ' '
 251                                << di.mtime_cur << ' '
 252                                << nome << endl;
 253                 }
 254                 deplist[FileName(nome)] = di;
 255         }
 256         return deplist.size();
 257 }
 258
 259
 260 } // namespace lyx