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