src/VCBackend.cpp

   1 /**
   2  * \file VCBackend.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  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "VCBackend.h"
  14 #include "debug.h"
  15 #include "Buffer.h"
  16
  17 #include "support/Path.h"
  18 #include "support/filetools.h"
  19 #include "support/fs_extras.h"
  20 #include "support/lstrings.h"
  21 #include "support/Systemcall.h"
  22
  23 #include <boost/regex.hpp>
  24
  25 #include <fstream>
  26
  27
  28 namespace lyx {
  29
  30 using support::addName;
  31 using support::addPath;
  32 using support::contains;
  33 using support::FileName;
  34 using support::onlyFilename;
  35 using support::onlyPath;
  36 using support::quoteName;
  37 using support::rtrim;
  38 using support::split;
  39 using support::Systemcall;
  40
  41 using boost::regex;
  42 using boost::regex_match;
  43 using boost::smatch;
  44
  45 #ifndef CXX_GLOBAL_CSTD
  46 using std::asctime;
  47 using std::gmtime;
  48 #endif
  49
  50 using std::endl;
  51 using std::getline;
  52 using std::string;
  53 using std::ifstream;
  54
  55
  56 int VCS::doVCCommand(string const & cmd, FileName const & path)
  57 {
  58         LYXERR(Debug::LYXVC) << "doVCCommand: " << cmd << endl;
  59         Systemcall one;
  60         support::Path p(path);
  61         int const ret = one.startscript(Systemcall::Wait, cmd);
  62         return ret;
  63 }
  64
  65
  66 /////////////////////////////////////////////////////////////////////
  67 //
  68 // RCS
  69 //
  70 /////////////////////////////////////////////////////////////////////
  71
  72 RCS::RCS(FileName const & m)
  73 {
  74         master_ = m;
  75         scanMaster();
  76 }
  77
  78
  79 FileName const RCS::find_file(FileName const & file)
  80 {
  81         // Check if *,v exists.
  82         FileName tmp(file.absFilename() + ",v");
  83         LYXERR(Debug::LYXVC) << "Checking if file is under rcs: "
  84                              << tmp << endl;
  85         if (tmp.isReadable()) {
  86                 LYXERR(Debug::LYXVC) << "Yes " << file
  87                                      << " is under rcs." << endl;
  88                 return tmp;
  89         }
  90
  91         // Check if RCS/*,v exists.
  92         tmp = FileName(addName(addPath(onlyPath(file.absFilename()), "RCS"), file.absFilename()) + ",v");
  93         LYXERR(Debug::LYXVC) << "Checking if file is under rcs: "
  94                                          << tmp << endl;
  95         if (tmp.isReadable()) {
  96                 LYXERR(Debug::LYXVC) << "Yes " << file
  97                                                  << " it is under rcs."<< endl;
  98                 return tmp;
  99         }
 100
 101         return FileName();
 102 }
 103
 104
 105 void RCS::retrieve(FileName const & file)
 106 {
 107         LYXERR(Debug::LYXVC) << "LyXVC::RCS: retrieve.\n\t" << file << endl;
 108         VCS::doVCCommand("co -q -r " + quoteName(file.toFilesystemEncoding()),
 109                          FileName());
 110 }
 111
 112
 113 void RCS::scanMaster()
 114 {
 115         LYXERR(Debug::LYXVC) << "LyXVC::RCS: scanMaster." << endl;
 116
 117         ifstream ifs(master_.toFilesystemEncoding().c_str());
 118
 119         string token;
 120         bool read_enough = false;
 121
 122         while (!read_enough && ifs >> token) {
 123                 LYXERR(Debug::LYXVC)
 124                         << "LyXVC::scanMaster: current lex text: `"
 125                         << token << '\'' << endl;
 126
 127                 if (token.empty())
 128                         continue;
 129                 else if (token == "head") {
 130                         // get version here
 131                         string tmv;
 132                         ifs >> tmv;
 133                         tmv = rtrim(tmv, ";");
 134                         version_ = tmv;
 135                         LYXERR(Debug::LYXVC) << "LyXVC: version found to be "
 136                                              << tmv << endl;
 137                 } else if (contains(token, "access")
 138                            || contains(token, "symbols")
 139                            || contains(token, "strict")) {
 140                         // nothing
 141                 } else if (contains(token, "locks")) {
 142                         // get locker here
 143                         if (contains(token, ';')) {
 144                                 locker_ = "Unlocked";
 145                                 vcstatus = UNLOCKED;
 146                                 continue;
 147                         }
 148                         string tmpt;
 149                         string s1;
 150                         string s2;
 151                         do {
 152                                 ifs >> tmpt;
 153                                 s1 = rtrim(tmpt, ";");
 154                                 // tmp is now in the format <user>:<version>
 155                                 s1 = split(s1, s2, ':');
 156                                 // s2 is user, and s1 is version
 157                                 if (s1 == version_) {
 158                                         locker_ = s2;
 159                                         vcstatus = LOCKED;
 160                                         break;
 161                                 }
 162                         } while (!contains(tmpt, ';'));
 163
 164                 } else if (token == "comment") {
 165                         // we don't need to read any further than this.
 166                         read_enough = true;
 167                 } else {
 168                         // unexpected
 169                         LYXERR(Debug::LYXVC)
 170                                 << "LyXVC::scanMaster(): unexpected token"
 171                                 << endl;
 172                 }
 173         }
 174 }
 175
 176
 177 void RCS::registrer(string const & msg)
 178 {
 179         string cmd = "ci -q -u -i -t-\"";
 180         cmd += msg;
 181         cmd += "\" ";
 182         cmd += quoteName(onlyFilename(owner_->absFileName()));
 183         doVCCommand(cmd, FileName(owner_->filePath()));
 184 }
 185
 186
 187 void RCS::checkIn(string const & msg)
 188 {
 189         doVCCommand("ci -q -u -m\"" + msg + "\" "
 190                     + quoteName(onlyFilename(owner_->absFileName())),
 191                     FileName(owner_->filePath()));
 192 }
 193
 194
 195 void RCS::checkOut()
 196 {
 197         owner_->markClean();
 198         doVCCommand("co -q -l " + quoteName(onlyFilename(owner_->absFileName())),
 199                     FileName(owner_->filePath()));
 200 }
 201
 202
 203 void RCS::revert()
 204 {
 205         doVCCommand("co -f -u" + version() + " "
 206                     + quoteName(onlyFilename(owner_->absFileName())),
 207                     FileName(owner_->filePath()));
 208         // We ignore changes and just reload!
 209         owner_->markClean();
 210 }
 211
 212
 213 void RCS::undoLast()
 214 {
 215         LYXERR(Debug::LYXVC) << "LyXVC: undoLast" << endl;
 216         doVCCommand("rcs -o" + version() + " "
 217                     + quoteName(onlyFilename(owner_->absFileName())),
 218                     FileName(owner_->filePath()));
 219 }
 220
 221
 222 void RCS::getLog(FileName const & tmpf)
 223 {
 224         doVCCommand("rlog " + quoteName(onlyFilename(owner_->absFileName()))
 225                     + " > " + tmpf.toFilesystemEncoding(),
 226                     FileName(owner_->filePath()));
 227 }
 228
 229
 230 /////////////////////////////////////////////////////////////////////
 231 //
 232 // CVS
 233 //
 234 /////////////////////////////////////////////////////////////////////
 235
 236 CVS::CVS(FileName const & m, FileName const & f)
 237 {
 238         master_ = m;
 239         file_ = f;
 240         scanMaster();
 241 }
 242
 243
 244 FileName const CVS::find_file(FileName const & file)
 245 {
 246         // First we look for the CVS/Entries in the same dir
 247         // where we have file.
 248         FileName const dir(onlyPath(file.absFilename()) + "/CVS/Entries");
 249         string const tmpf = '/' + onlyFilename(file.absFilename()) + '/';
 250         LYXERR(Debug::LYXVC) << "LyXVC: checking in `" << dir
 251                              << "' for `" << tmpf << '\'' << endl;
 252         if (dir.isReadable()) {
 253                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 254                 // and see if we can find this file. We do a fast and
 255                 // dirty parse here.
 256                 ifstream ifs(dir.toFilesystemEncoding().c_str());
 257                 string line;
 258                 while (getline(ifs, line)) {
 259                         LYXERR(Debug::LYXVC) << "\tEntries: " << line << endl;
 260                         if (contains(line, tmpf))
 261                                 return dir;
 262                 }
 263         }
 264         return FileName();
 265 }
 266
 267
 268 void CVS::scanMaster()
 269 {
 270         LYXERR(Debug::LYXVC) << "LyXVC::CVS: scanMaster. \n     Checking: "
 271                              << master_ << endl;
 272         // Ok now we do the real scan...
 273         ifstream ifs(master_.toFilesystemEncoding().c_str());
 274         string tmpf = '/' + onlyFilename(file_.absFilename()) + '/';
 275         LYXERR(Debug::LYXVC) << "\tlooking for `" << tmpf << '\'' << endl;
 276         string line;
 277         static regex const reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 278         while (getline(ifs, line)) {
 279                 LYXERR(Debug::LYXVC) << "\t  line: " << line << endl;
 280                 if (contains(line, tmpf)) {
 281                         // Ok extract the fields.
 282                         smatch sm;
 283
 284                         regex_match(line, sm, reg);
 285
 286                         //sm[0]; // whole matched string
 287                         //sm[1]; // filename
 288                         version_ = sm.str(2);
 289                         string const file_date = sm.str(3);
 290
 291                         //sm[4]; // options
 292                         //sm[5]; // tag or tagdate
 293                         // FIXME: must double check file is stattable/existing
 294                         time_t mod = file_.lastModified();
 295                         string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 296                         LYXERR(Debug::LYXVC)
 297                                 <<  "Date in Entries: `" << file_date
 298                                 << "'\nModification date of file: `"
 299                                 << mod_date << '\'' << endl;
 300                         if (file_date == mod_date) {
 301                                 locker_ = "Unlocked";
 302                                 vcstatus = UNLOCKED;
 303                         } else {
 304                                 // Here we should also to some more checking
 305                                 // to see if there are conflicts or not.
 306                                 locker_ = "Locked";
 307                                 vcstatus = LOCKED;
 308                         }
 309                         break;
 310                 }
 311         }
 312 }
 313
 314
 315 void CVS::registrer(string const & msg)
 316 {
 317         doVCCommand("cvs -q add -m \"" + msg + "\" "
 318                     + quoteName(onlyFilename(owner_->absFileName())),
 319                     FileName(owner_->filePath()));
 320 }
 321
 322
 323 void CVS::checkIn(string const & msg)
 324 {
 325         doVCCommand("cvs -q commit -m \"" + msg + "\" "
 326                     + quoteName(onlyFilename(owner_->absFileName())),
 327                     FileName(owner_->filePath()));
 328 }
 329
 330
 331 void CVS::checkOut()
 332 {
 333         // cvs update or perhaps for cvs this should be a noop
 334         lyxerr << "Sorry not implemented." << endl;
 335 }
 336
 337
 338 void CVS::revert()
 339 {
 340         // Reverts to the version in CVS repository and
 341         // gets the updated version from the repository.
 342         string const fil = quoteName(onlyFilename(owner_->absFileName()));
 343
 344         doVCCommand("rm -f " + fil + "; cvs update " + fil,
 345                     FileName(owner_->filePath()));
 346         owner_->markClean();
 347 }
 348
 349
 350 void CVS::undoLast()
 351 {
 352         // merge the current with the previous version
 353         // in a reverse patch kind of way, so that the
 354         // result is to revert the last changes.
 355         lyxerr << "Sorry not implemented." << endl;
 356 }
 357
 358
 359 void CVS::getLog(FileName const & tmpf)
 360 {
 361         doVCCommand("cvs log " + quoteName(onlyFilename(owner_->absFileName()))
 362                     + " > " + tmpf.toFilesystemEncoding(),
 363                     FileName(owner_->filePath()));
 364 }
 365
 366
 367 } // namespace lyx