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