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/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::FileName;
  35 using support::onlyFilename;
  36 using support::onlyPath;
  37 using support::quoteName;
  38 using support::rtrim;
  39 using support::split;
  40 using support::Systemcall;
  41
  42 using boost::regex;
  43 using boost::regex_match;
  44 using boost::smatch;
  45
  46 #ifndef CXX_GLOBAL_CSTD
  47 using std::asctime;
  48 using std::gmtime;
  49 #endif
  50
  51 using std::endl;
  52 using std::getline;
  53 using std::string;
  54 using std::ifstream;
  55
  56 namespace fs = boost::filesystem;
  57
  58
  59 int VCS::doVCCommand(string const & cmd, FileName const & path)
  60 {
  61         LYXERR(Debug::LYXVC) << "doVCCommand: " << cmd << endl;
  62         Systemcall one;
  63         support::Path p(path);
  64         int const ret = one.startscript(Systemcall::Wait, cmd);
  65         return ret;
  66 }
  67
  68
  69 RCS::RCS(FileName const & m)
  70 {
  71         master_ = m;
  72         scanMaster();
  73 }
  74
  75
  76 FileName const RCS::find_file(FileName const & file)
  77 {
  78         // Check if *,v exists.
  79         FileName tmp(file.absFilename() + ",v");
  80         LYXERR(Debug::LYXVC) << "Checking if file is under rcs: "
  81                              << tmp << endl;
  82         if (fs::is_readable(tmp.toFilesystemEncoding())) {
  83                 LYXERR(Debug::LYXVC) << "Yes " << file
  84                                      << " is under rcs." << endl;
  85                 return tmp;
  86         } else {
  87                 // Check if RCS/*,v exists.
  88                 tmp = FileName(addName(addPath(onlyPath(file.absFilename()), "RCS"), file.absFilename()) + ",v");
  89                 LYXERR(Debug::LYXVC) << "Checking if file is under rcs: "
  90                                      << tmp << endl;
  91                 if (fs::is_readable(tmp.toFilesystemEncoding())) {
  92                         LYXERR(Debug::LYXVC) << "Yes " << file
  93                                              << " it is under rcs."<< endl;
  94                         return tmp;
  95                 }
  96         }
  97         return FileName();
  98 }
  99
 100
 101 void RCS::retrieve(FileName const & file)
 102 {
 103         LYXERR(Debug::LYXVC) << "LyXVC::RCS: retrieve.\n\t" << file << endl;
 104         VCS::doVCCommand("co -q -r " + quoteName(file.toFilesystemEncoding()),
 105                          FileName());
 106 }
 107
 108
 109 void RCS::scanMaster()
 110 {
 111         LYXERR(Debug::LYXVC) << "LyXVC::RCS: scanMaster." << endl;
 112
 113         ifstream ifs(master_.toFilesystemEncoding().c_str());
 114
 115         string token;
 116         bool read_enough = false;
 117
 118         while (!read_enough && ifs >> token) {
 119                 LYXERR(Debug::LYXVC)
 120                         << "LyXVC::scanMaster: current lex text: `"
 121                         << token << '\'' << endl;
 122
 123                 if (token.empty())
 124                         continue;
 125                 else if (token == "head") {
 126                         // get version here
 127                         string tmv;
 128                         ifs >> tmv;
 129                         tmv = rtrim(tmv, ";");
 130                         version_ = tmv;
 131                         LYXERR(Debug::LYXVC) << "LyXVC: version found to be "
 132                                              << tmv << endl;
 133                 } else if (contains(token, "access")
 134                            || contains(token, "symbols")
 135                            || contains(token, "strict")) {
 136                         // nothing
 137                 } else if (contains(token, "locks")) {
 138                         // get locker here
 139                         if (contains(token, ';')) {
 140                                 locker_ = "Unlocked";
 141                                 vcstatus = UNLOCKED;
 142                                 continue;
 143                         }
 144                         string tmpt;
 145                         string s1;
 146                         string s2;
 147                         do {
 148                                 ifs >> tmpt;
 149                                 s1 = rtrim(tmpt, ";");
 150                                 // tmp is now in the format <user>:<version>
 151                                 s1 = split(s1, s2, ':');
 152                                 // s2 is user, and s1 is version
 153                                 if (s1 == version_) {
 154                                         locker_ = s2;
 155                                         vcstatus = LOCKED;
 156                                         break;
 157                                 }
 158                         } while (!contains(tmpt, ';'));
 159
 160                 } else if (token == "comment") {
 161                         // we don't need to read any further than this.
 162                         read_enough = true;
 163                 } else {
 164                         // unexpected
 165                         LYXERR(Debug::LYXVC)
 166                                 << "LyXVC::scanMaster(): unexpected token"
 167                                 << endl;
 168                 }
 169         }
 170 }
 171
 172
 173 void RCS::registrer(string const & msg)
 174 {
 175         string cmd = "ci -q -u -i -t-\"";
 176         cmd += msg;
 177         cmd += "\" ";
 178         cmd += quoteName(onlyFilename(owner_->fileName()));
 179         doVCCommand(cmd, FileName(owner_->filePath()));
 180 }
 181
 182
 183 void RCS::checkIn(string const & msg)
 184 {
 185         doVCCommand("ci -q -u -m\"" + msg + "\" "
 186                     + quoteName(onlyFilename(owner_->fileName())),
 187                     FileName(owner_->filePath()));
 188 }
 189
 190
 191 void RCS::checkOut()
 192 {
 193         owner_->markClean();
 194         doVCCommand("co -q -l " + quoteName(onlyFilename(owner_->fileName())),
 195                     FileName(owner_->filePath()));
 196 }
 197
 198
 199 void RCS::revert()
 200 {
 201         doVCCommand("co -f -u" + version() + " "
 202                     + quoteName(onlyFilename(owner_->fileName())),
 203                     FileName(owner_->filePath()));
 204         // We ignore changes and just reload!
 205         owner_->markClean();
 206 }
 207
 208
 209 void RCS::undoLast()
 210 {
 211         LYXERR(Debug::LYXVC) << "LyXVC: undoLast" << endl;
 212         doVCCommand("rcs -o" + version() + " "
 213                     + quoteName(onlyFilename(owner_->fileName())),
 214                     FileName(owner_->filePath()));
 215 }
 216
 217
 218 void RCS::getLog(FileName const & tmpf)
 219 {
 220         doVCCommand("rlog " + quoteName(onlyFilename(owner_->fileName()))
 221                     + " > " + tmpf.toFilesystemEncoding(),
 222                     FileName(owner_->filePath()));
 223 }
 224
 225
 226 CVS::CVS(FileName const & m, FileName const & f)
 227 {
 228         master_ = m;
 229         file_ = f;
 230         scanMaster();
 231 }
 232
 233
 234 FileName const CVS::find_file(FileName const & file)
 235 {
 236         // First we look for the CVS/Entries in the same dir
 237         // where we have file.
 238         FileName const dir(onlyPath(file.absFilename()) + "/CVS/Entries");
 239         string const tmpf = '/' + onlyFilename(file.absFilename()) + '/';
 240         LYXERR(Debug::LYXVC) << "LyXVC: checking in `" << dir
 241                              << "' for `" << tmpf << '\'' << endl;
 242         if (fs::is_readable(dir.toFilesystemEncoding())) {
 243                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 244                 // and see if we can find this file. We do a fast and
 245                 // dirty parse here.
 246                 ifstream ifs(dir.toFilesystemEncoding().c_str());
 247                 string line;
 248                 while (getline(ifs, line)) {
 249                         LYXERR(Debug::LYXVC) << "\tEntries: " << line << endl;
 250                         if (contains(line, tmpf))
 251                                 return dir;
 252                 }
 253         }
 254         return FileName();
 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_.toFilesystemEncoding().c_str());
 264         string tmpf = '/' + onlyFilename(file_.absFilename()) + '/';
 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_.toFilesystemEncoding());
 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                     FileName(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                     FileName(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                     FileName(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(FileName const & tmpf)
 350 {
 351         doVCCommand("cvs log " + quoteName(onlyFilename(owner_->fileName()))
 352                     + " > " + tmpf.toFilesystemEncoding(),
 353                     FileName(owner_->filePath()));
 354 }
 355
 356
 357 } // namespace lyx