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/FileInfo.h"
  18 #include "support/path.h"
  19 #include "support/filetools.h"
  20 #include "support/lstrings.h"
  21 #include "support/systemcall.h"
  22
  23 #include <boost/regex.hpp>
  24
  25 #include <fstream>
  26
  27 using namespace lyx::support;
  28
  29 #ifndef CXX_GLOBAL_CSTD
  30 using std::asctime;
  31 using std::gmtime;
  32 #endif
  33
  34 using std::endl;
  35 using std::getline;
  36
  37 using std::ifstream;
  38
  39 using boost::regex;
  40 using boost::regex_match;
  41
  42 #ifndef USE_INCLUDED_STRING
  43 using boost::smatch;
  44 #else
  45 using boost::cmatch;
  46 #endif
  47
  48
  49 int VCS::doVCCommand(string const & cmd, string const & path)
  50 {
  51         lyxerr[Debug::LYXVC] << "doVCCommand: " << cmd << endl;
  52         Systemcall one;
  53         Path p(path);
  54         int const ret = one.startscript(Systemcall::Wait, cmd);
  55         return ret;
  56 }
  57
  58
  59 RCS::RCS(string const & m)
  60 {
  61         master_ = m;
  62         scanMaster();
  63 }
  64
  65
  66 string const RCS::find_file(string const & file)
  67 {
  68         string tmp(file);
  69         // Check if *,v exists.
  70         tmp += ",v";
  71         FileInfo f;
  72         lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  73                              << tmp << endl;
  74         if (f.newFile(tmp).readable()) {
  75                 lyxerr[Debug::LYXVC] << "Yes " << file
  76                                      << " is under rcs." << endl;
  77                 return tmp;
  78         } else {
  79                 // Check if RCS/*,v exists.
  80                 tmp = AddName(AddPath(OnlyPath(file), "RCS"), file);
  81                 tmp += ",v";
  82                 lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  83                                      << tmp << endl;
  84                 if (f.newFile(tmp).readable()) {
  85                         lyxerr[Debug::LYXVC] << "Yes " << file
  86                                              << " it is under rcs."<< endl;
  87                         return tmp;
  88                 }
  89         }
  90         return string();
  91 }
  92
  93
  94 void RCS::retrieve(string const & file)
  95 {
  96         lyxerr[Debug::LYXVC] << "LyXVC::RCS: retrieve.\n\t" << file << endl;
  97         VCS::doVCCommand("co -q -r \""
  98                          + file + '"',
  99                          string());
 100 }
 101
 102
 103 void RCS::scanMaster()
 104 {
 105         lyxerr[Debug::LYXVC] << "LyXVC::RCS: scanMaster." << endl;
 106
 107         ifstream ifs(master_.c_str());
 108
 109         string token;
 110         bool read_enough = false;
 111
 112         while (!read_enough && ifs >> token) {
 113                 lyxerr[Debug::LYXVC]
 114                         << "LyXVC::scanMaster: current lex text: `"
 115                         << token << '\'' << endl;
 116
 117                 if (token.empty())
 118                         continue;
 119                 else if (token == "head") {
 120                         // get version here
 121                         string tmv;
 122                         ifs >> tmv;
 123                         tmv = rtrim(tmv, ";");
 124                         version_ = tmv;
 125                         lyxerr[Debug::LYXVC] << "LyXVC: version found to be "
 126                                              << tmv << endl;
 127                 } else if (contains(token, "access")
 128                            || contains(token, "symbols")
 129                            || contains(token, "strict")) {
 130                         // nothing
 131                 } else if (contains(token, "locks")) {
 132                         // get locker here
 133                         if (contains(token, ";")) {
 134                                 locker_ = "Unlocked";
 135                                 vcstatus = UNLOCKED;
 136                                 continue;
 137                         }
 138                         string tmpt;
 139                         string s1;
 140                         string s2;
 141                         do {
 142                                 ifs >> tmpt;
 143                                 s1 = rtrim(tmpt, ";");
 144                                 // tmp is now in the format <user>:<version>
 145                                 s1 = split(s1, s2, ':');
 146                                 // s2 is user, and s1 is version
 147                                 if (s1 == version_) {
 148                                         locker_ = s2;
 149                                         vcstatus = LOCKED;
 150                                         break;
 151                                 }
 152                         } while (!contains(tmpt, ";"));
 153
 154                 } else if (token == "comment") {
 155                         // we don't need to read any further than this.
 156                         read_enough = true;
 157                 } else {
 158                         // unexpected
 159                         lyxerr[Debug::LYXVC]
 160                                 << "LyXVC::scanMaster(): unexpected token"
 161                                 << endl;
 162                 }
 163         }
 164 }
 165
 166
 167 void RCS::registrer(string const & msg)
 168 {
 169         string cmd = "ci -q -u -i -t-\"";
 170         cmd += msg;
 171         cmd += "\" \"";
 172         cmd += OnlyFilename(owner_->fileName());
 173         cmd += '"';
 174         doVCCommand(cmd, owner_->filePath());
 175 }
 176
 177
 178 void RCS::checkIn(string const & msg)
 179 {
 180         doVCCommand("ci -q -u -m\"" + msg + "\" \""
 181                     + OnlyFilename(owner_->fileName()) + '"',
 182                     owner_->filePath());
 183 }
 184
 185
 186 void RCS::checkOut()
 187 {
 188         owner_->markClean();
 189         doVCCommand("co -q -l \""
 190                     + OnlyFilename(owner_->fileName()) + '"',
 191                     owner_->filePath());
 192 }
 193
 194
 195 void RCS::revert()
 196 {
 197         doVCCommand("co -f -u" + version() + " \""
 198                     + OnlyFilename(owner_->fileName()) + '"',
 199                     owner_->filePath());
 200         // We ignore changes and just reload!
 201         owner_->markClean();
 202 }
 203
 204
 205 void RCS::undoLast()
 206 {
 207         lyxerr[Debug::LYXVC] << "LyXVC: undoLast" << endl;
 208         doVCCommand("rcs -o" + version() + " \""
 209                     + OnlyFilename(owner_->fileName()) + '"',
 210                     owner_->filePath());
 211 }
 212
 213
 214 void RCS::getLog(string const & tmpf)
 215 {
 216         doVCCommand("rlog \""
 217                     + OnlyFilename(owner_->fileName()) + "\" > "
 218                     + tmpf, owner_->filePath());
 219 }
 220
 221
 222 CVS::CVS(string const & m, string const & f)
 223 {
 224         master_ = m;
 225         file_ = f;
 226         scanMaster();
 227 }
 228
 229
 230 string const CVS::find_file(string const & file)
 231 {
 232         // First we look for the CVS/Entries in the same dir
 233         // where we have file.
 234         string const dir = OnlyPath(file) + "/CVS/Entries";
 235         string const tmpf = "/" + OnlyFilename(file) + "/";
 236         lyxerr[Debug::LYXVC] << "LyXVC: checking in `" << dir
 237                              << "' for `" << tmpf << '\'' << endl;
 238         FileInfo const f(dir);
 239         if (f.readable()) {
 240                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 241                 // and see if we can find this file. We do a fast and
 242                 // dirty parse here.
 243                 ifstream ifs(dir.c_str());
 244                 string line;
 245                 while (getline(ifs, line)) {
 246                         lyxerr[Debug::LYXVC] << "\tEntries: " << line << endl;
 247                         if (contains(line, tmpf)) return dir;
 248                 }
 249         }
 250         return string();
 251 }
 252
 253
 254 void CVS::scanMaster()
 255 {
 256         lyxerr[Debug::LYXVC] << "LyXVC::CVS: scanMaster. \n     Checking: "
 257                              << master_ << endl;
 258         // Ok now we do the real scan...
 259         ifstream ifs(master_.c_str());
 260         string tmpf = "/" + OnlyFilename(file_) + "/";
 261         lyxerr[Debug::LYXVC] << "\tlooking for `" << tmpf << '\'' << endl;
 262         string line;
 263         regex reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 264         while (getline(ifs, line)) {
 265                 lyxerr[Debug::LYXVC] << "\t  line: " << line << endl;
 266                 if (contains(line, tmpf)) {
 267                         // Ok extract the fields.
 268 #ifndef USE_INCLUDED_STRING
 269                         smatch sm;
 270 #else
 271                         cmatch sm;
 272 #endif
 273                         regex_match(STRCONV(line), sm, reg);
 274
 275                         //sm[0]; // whole matched string
 276                         //sm[1]; // filename
 277                         version_ = STRCONV(sm.str(2));
 278                         string const file_date = STRCONV(sm.str(3));
 279
 280                         //sm[4]; // options
 281                         //sm[5]; // tag or tagdate
 282                         FileInfo fi(file_);
 283                         // FIXME: must double check file is stattable/existing
 284                         time_t mod = fi.getModificationTime();
 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                     + 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                     + 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 = 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 \""
 352                     + OnlyFilename(owner_->fileName()) + "\" > " + tmpf,
 353                     owner_->filePath());
 354 }