src/vc-backend.C

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