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::Path;
  34 using lyx::support::QuoteName;
  35 using lyx::support::rtrim;
  36 using lyx::support::split;
  37 using lyx::support::Systemcall;
  38
  39 using boost::regex;
  40 using boost::regex_match;
  41 using boost::smatch;
  42
  43 #ifndef CXX_GLOBAL_CSTD
  44 using std::asctime;
  45 using std::gmtime;
  46 #endif
  47
  48 using std::endl;
  49 using std::getline;
  50 using std::string;
  51 using std::ifstream;
  52
  53 namespace fs = boost::filesystem;
  54
  55
  56 int VCS::doVCCommand(string const & cmd, string const & path)
  57 {
  58         lyxerr[Debug::LYXVC] << "doVCCommand: " << cmd << endl;
  59         Systemcall one;
  60         Path p(path);
  61         int const ret = one.startscript(Systemcall::Wait, cmd);
  62         return ret;
  63 }
  64
  65
  66 RCS::RCS(string const & m)
  67 {
  68         master_ = m;
  69         scanMaster();
  70 }
  71
  72
  73 string const RCS::find_file(string const & file)
  74 {
  75         string tmp(file);
  76         // Check if *,v exists.
  77         tmp += ",v";
  78         lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  79                              << tmp << endl;
  80         if (fs::is_readable(tmp)) {
  81                 lyxerr[Debug::LYXVC] << "Yes " << file
  82                                      << " is under rcs." << endl;
  83                 return tmp;
  84         } else {
  85                 // Check if RCS/*,v exists.
  86                 tmp = AddName(AddPath(OnlyPath(file), "RCS"), file);
  87                 tmp += ",v";
  88                 lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  89                                      << tmp << endl;
  90                 if (fs::is_readable(tmp)) {
  91                         lyxerr[Debug::LYXVC] << "Yes " << file
  92                                              << " it is under rcs."<< endl;
  93                         return tmp;
  94                 }
  95         }
  96         return string();
  97 }
  98
  99
 100 void RCS::retrieve(string const & file)
 101 {
 102         lyxerr[Debug::LYXVC] << "LyXVC::RCS: retrieve.\n\t" << file << endl;
 103         VCS::doVCCommand("co -q -r " + QuoteName(file),
 104                          string());
 105 }
 106
 107
 108 void RCS::scanMaster()
 109 {
 110         lyxerr[Debug::LYXVC] << "LyXVC::RCS: scanMaster." << endl;
 111
 112         ifstream ifs(master_.c_str());
 113
 114         string token;
 115         bool read_enough = false;
 116
 117         while (!read_enough && ifs >> token) {
 118                 lyxerr[Debug::LYXVC]
 119                         << "LyXVC::scanMaster: current lex text: `"
 120                         << token << '\'' << endl;
 121
 122                 if (token.empty())
 123                         continue;
 124                 else if (token == "head") {
 125                         // get version here
 126                         string tmv;
 127                         ifs >> tmv;
 128                         tmv = rtrim(tmv, ";");
 129                         version_ = tmv;
 130                         lyxerr[Debug::LYXVC] << "LyXVC: version found to be "
 131                                              << tmv << endl;
 132                 } else if (contains(token, "access")
 133                            || contains(token, "symbols")
 134                            || contains(token, "strict")) {
 135                         // nothing
 136                 } else if (contains(token, "locks")) {
 137                         // get locker here
 138                         if (contains(token, ';')) {
 139                                 locker_ = "Unlocked";
 140                                 vcstatus = UNLOCKED;
 141                                 continue;
 142                         }
 143                         string tmpt;
 144                         string s1;
 145                         string s2;
 146                         do {
 147                                 ifs >> tmpt;
 148                                 s1 = rtrim(tmpt, ";");
 149                                 // tmp is now in the format <user>:<version>
 150                                 s1 = split(s1, s2, ':');
 151                                 // s2 is user, and s1 is version
 152                                 if (s1 == version_) {
 153                                         locker_ = s2;
 154                                         vcstatus = LOCKED;
 155                                         break;
 156                                 }
 157                         } while (!contains(tmpt, ';'));
 158
 159                 } else if (token == "comment") {
 160                         // we don't need to read any further than this.
 161                         read_enough = true;
 162                 } else {
 163                         // unexpected
 164                         lyxerr[Debug::LYXVC]
 165                                 << "LyXVC::scanMaster(): unexpected token"
 166                                 << endl;
 167                 }
 168         }
 169 }
 170
 171
 172 void RCS::registrer(string const & msg)
 173 {
 174         string cmd = "ci -q -u -i -t-\"";
 175         cmd += msg;
 176         cmd += "\" ";
 177         cmd += QuoteName(OnlyFilename(owner_->fileName()));
 178         doVCCommand(cmd, owner_->filePath());
 179 }
 180
 181
 182 void RCS::checkIn(string const & msg)
 183 {
 184         doVCCommand("ci -q -u -m\"" + msg + "\" "
 185                     + QuoteName(OnlyFilename(owner_->fileName())),
 186                     owner_->filePath());
 187 }
 188
 189
 190 void RCS::checkOut()
 191 {
 192         owner_->markClean();
 193         doVCCommand("co -q -l " + QuoteName(OnlyFilename(owner_->fileName())),
 194                     owner_->filePath());
 195 }
 196
 197
 198 void RCS::revert()
 199 {
 200         doVCCommand("co -f -u" + version() + " "
 201                     + QuoteName(OnlyFilename(owner_->fileName())),
 202                     owner_->filePath());
 203         // We ignore changes and just reload!
 204         owner_->markClean();
 205 }
 206
 207
 208 void RCS::undoLast()
 209 {
 210         lyxerr[Debug::LYXVC] << "LyXVC: undoLast" << endl;
 211         doVCCommand("rcs -o" + version() + " "
 212                     + QuoteName(OnlyFilename(owner_->fileName())),
 213                     owner_->filePath());
 214 }
 215
 216
 217 void RCS::getLog(string const & tmpf)
 218 {
 219         doVCCommand("rlog " + QuoteName(OnlyFilename(owner_->fileName()))
 220                     + " > " + tmpf,
 221                     owner_->filePath());
 222 }
 223
 224
 225 CVS::CVS(string const & m, string const & f)
 226 {
 227         master_ = m;
 228         file_ = f;
 229         scanMaster();
 230 }
 231
 232
 233 string const CVS::find_file(string const & file)
 234 {
 235         // First we look for the CVS/Entries in the same dir
 236         // where we have file.
 237         string const dir = OnlyPath(file) + "/CVS/Entries";
 238         string const tmpf = "/" + OnlyFilename(file) + "/";
 239         lyxerr[Debug::LYXVC] << "LyXVC: checking in `" << dir
 240                              << "' for `" << tmpf << '\'' << endl;
 241         if (fs::is_readable(dir)) {
 242                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 243                 // and see if we can find this file. We do a fast and
 244                 // dirty parse here.
 245                 ifstream ifs(dir.c_str());
 246                 string line;
 247                 while (getline(ifs, line)) {
 248                         lyxerr[Debug::LYXVC] << "\tEntries: " << line << endl;
 249                         if (contains(line, tmpf)) return dir;
 250                 }
 251         }
 252         return string();
 253 }
 254
 255
 256 void CVS::scanMaster()
 257 {
 258         lyxerr[Debug::LYXVC] << "LyXVC::CVS: scanMaster. \n     Checking: "
 259                              << master_ << endl;
 260         // Ok now we do the real scan...
 261         ifstream ifs(master_.c_str());
 262         string tmpf = "/" + OnlyFilename(file_) + "/";
 263         lyxerr[Debug::LYXVC] << "\tlooking for `" << tmpf << '\'' << endl;
 264         string line;
 265         static regex const reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 266         while (getline(ifs, line)) {
 267                 lyxerr[Debug::LYXVC] << "\t  line: " << line << endl;
 268                 if (contains(line, tmpf)) {
 269                         // Ok extract the fields.
 270                         smatch sm;
 271
 272                         regex_match(line, sm, reg);
 273
 274                         //sm[0]; // whole matched string
 275                         //sm[1]; // filename
 276                         version_ = sm.str(2);
 277                         string const file_date = sm.str(3);
 278
 279                         //sm[4]; // options
 280                         //sm[5]; // tag or tagdate
 281                         // FIXME: must double check file is stattable/existing
 282                         time_t mod = fs::last_write_time(file_);
 283                         string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 284                         lyxerr[Debug::LYXVC]
 285                                 <<  "Date in Entries: `" << file_date
 286                                 << "'\nModification date of file: `"
 287                                 << mod_date << '\'' << endl;
 288                         if (file_date == mod_date) {
 289                                 locker_ = "Unlocked";
 290                                 vcstatus = UNLOCKED;
 291                         } else {
 292                                 // Here we should also to some more checking
 293                                 // to see if there are conflicts or not.
 294                                 locker_ = "Locked";
 295                                 vcstatus = LOCKED;
 296                         }
 297                         break;
 298                 }
 299         }
 300 }
 301
 302
 303 void CVS::registrer(string const & msg)
 304 {
 305         doVCCommand("cvs -q add -m \"" + msg + "\" "
 306                     + QuoteName(OnlyFilename(owner_->fileName())),
 307                     owner_->filePath());
 308 }
 309
 310
 311 void CVS::checkIn(string const & msg)
 312 {
 313         doVCCommand("cvs -q commit -m \"" + msg + "\" "
 314                     + QuoteName(OnlyFilename(owner_->fileName())),
 315                     owner_->filePath());
 316 }
 317
 318
 319 void CVS::checkOut()
 320 {
 321         // cvs update or perhaps for cvs this should be a noop
 322         lyxerr << "Sorry not implemented." << endl;
 323 }
 324
 325
 326 void CVS::revert()
 327 {
 328         // Reverts to the version in CVS repository and
 329         // gets the updated version from the repository.
 330         string const fil = QuoteName(OnlyFilename(owner_->fileName()));
 331
 332         doVCCommand("rm -f " + fil + "; cvs update " + fil,
 333                     owner_->filePath());
 334         owner_->markClean();
 335 }
 336
 337
 338 void CVS::undoLast()
 339 {
 340         // merge the current with the previous version
 341         // in a reverse patch kind of way, so that the
 342         // result is to revert the last changes.
 343         lyxerr << "Sorry not implemented." << endl;
 344 }
 345
 346
 347 void CVS::getLog(string const & tmpf)
 348 {
 349         doVCCommand("cvs log " + QuoteName(OnlyFilename(owner_->fileName()))
 350                     + " > " + tmpf,
 351                     owner_->filePath());
 352 }