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