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 lyx::support::AddName;
  28 using lyx::support::AddPath;
  29 using lyx::support::contains;
  30 using lyx::support::FileInfo;
  31 using lyx::support::OnlyFilename;
  32 using lyx::support::OnlyPath;
  33 using lyx::support::Path;
  34 using lyx::support::rtrim;
  35 using lyx::support::split;
  36 using lyx::support::Systemcall;
  37
  38 #ifndef CXX_GLOBAL_CSTD
  39 using std::asctime;
  40 using std::gmtime;
  41 #endif
  42
  43 using std::endl;
  44 using std::getline;
  45
  46 using std::ifstream;
  47
  48 using boost::regex;
  49 using boost::regex_match;
  50
  51 #ifndef USE_INCLUDED_STRING
  52 using boost::smatch;
  53 #else
  54 using boost::cmatch;
  55 #endif
  56
  57
  58 int VCS::doVCCommand(string const & cmd, string const & path)
  59 {
  60         lyxerr[Debug::LYXVC] << "doVCCommand: " << cmd << endl;
  61         Systemcall one;
  62         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         FileInfo f;
  81         lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  82                              << tmp << endl;
  83         if (f.newFile(tmp).readable()) {
  84                 lyxerr[Debug::LYXVC] << "Yes " << file
  85                                      << " is under rcs." << endl;
  86                 return tmp;
  87         } else {
  88                 // Check if RCS/*,v exists.
  89                 tmp = AddName(AddPath(OnlyPath(file), "RCS"), file);
  90                 tmp += ",v";
  91                 lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  92                                      << tmp << endl;
  93                 if (f.newFile(tmp).readable()) {
  94                         lyxerr[Debug::LYXVC] << "Yes " << file
  95                                              << " it is under rcs."<< endl;
  96                         return tmp;
  97                 }
  98         }
  99         return string();
 100 }
 101
 102
 103 void RCS::retrieve(string const & file)
 104 {
 105         lyxerr[Debug::LYXVC] << "LyXVC::RCS: retrieve.\n\t" << file << endl;
 106         VCS::doVCCommand("co -q -r \""
 107                          + file + '"',
 108                          string());
 109 }
 110
 111
 112 void RCS::scanMaster()
 113 {
 114         lyxerr[Debug::LYXVC] << "LyXVC::RCS: scanMaster." << endl;
 115
 116         ifstream ifs(master_.c_str());
 117
 118         string token;
 119         bool read_enough = false;
 120
 121         while (!read_enough && ifs >> token) {
 122                 lyxerr[Debug::LYXVC]
 123                         << "LyXVC::scanMaster: current lex text: `"
 124                         << token << '\'' << endl;
 125
 126                 if (token.empty())
 127                         continue;
 128                 else if (token == "head") {
 129                         // get version here
 130                         string tmv;
 131                         ifs >> tmv;
 132                         tmv = rtrim(tmv, ";");
 133                         version_ = tmv;
 134                         lyxerr[Debug::LYXVC] << "LyXVC: version found to be "
 135                                              << tmv << endl;
 136                 } else if (contains(token, "access")
 137                            || contains(token, "symbols")
 138                            || contains(token, "strict")) {
 139                         // nothing
 140                 } else if (contains(token, "locks")) {
 141                         // get locker here
 142                         if (contains(token, ";")) {
 143                                 locker_ = "Unlocked";
 144                                 vcstatus = UNLOCKED;
 145                                 continue;
 146                         }
 147                         string tmpt;
 148                         string s1;
 149                         string s2;
 150                         do {
 151                                 ifs >> tmpt;
 152                                 s1 = rtrim(tmpt, ";");
 153                                 // tmp is now in the format <user>:<version>
 154                                 s1 = split(s1, s2, ':');
 155                                 // s2 is user, and s1 is version
 156                                 if (s1 == version_) {
 157                                         locker_ = s2;
 158                                         vcstatus = LOCKED;
 159                                         break;
 160                                 }
 161                         } while (!contains(tmpt, ";"));
 162
 163                 } else if (token == "comment") {
 164                         // we don't need to read any further than this.
 165                         read_enough = true;
 166                 } else {
 167                         // unexpected
 168                         lyxerr[Debug::LYXVC]
 169                                 << "LyXVC::scanMaster(): unexpected token"
 170                                 << endl;
 171                 }
 172         }
 173 }
 174
 175
 176 void RCS::registrer(string const & msg)
 177 {
 178         string cmd = "ci -q -u -i -t-\"";
 179         cmd += msg;
 180         cmd += "\" \"";
 181         cmd += OnlyFilename(owner_->fileName());
 182         cmd += '"';
 183         doVCCommand(cmd, owner_->filePath());
 184 }
 185
 186
 187 void RCS::checkIn(string const & msg)
 188 {
 189         doVCCommand("ci -q -u -m\"" + msg + "\" \""
 190                     + OnlyFilename(owner_->fileName()) + '"',
 191                     owner_->filePath());
 192 }
 193
 194
 195 void RCS::checkOut()
 196 {
 197         owner_->markClean();
 198         doVCCommand("co -q -l \""
 199                     + OnlyFilename(owner_->fileName()) + '"',
 200                     owner_->filePath());
 201 }
 202
 203
 204 void RCS::revert()
 205 {
 206         doVCCommand("co -f -u" + version() + " \""
 207                     + OnlyFilename(owner_->fileName()) + '"',
 208                     owner_->filePath());
 209         // We ignore changes and just reload!
 210         owner_->markClean();
 211 }
 212
 213
 214 void RCS::undoLast()
 215 {
 216         lyxerr[Debug::LYXVC] << "LyXVC: undoLast" << endl;
 217         doVCCommand("rcs -o" + version() + " \""
 218                     + OnlyFilename(owner_->fileName()) + '"',
 219                     owner_->filePath());
 220 }
 221
 222
 223 void RCS::getLog(string const & tmpf)
 224 {
 225         doVCCommand("rlog \""
 226                     + OnlyFilename(owner_->fileName()) + "\" > "
 227                     + tmpf, owner_->filePath());
 228 }
 229
 230
 231 CVS::CVS(string const & m, string const & f)
 232 {
 233         master_ = m;
 234         file_ = f;
 235         scanMaster();
 236 }
 237
 238
 239 string const CVS::find_file(string const & file)
 240 {
 241         // First we look for the CVS/Entries in the same dir
 242         // where we have file.
 243         string const dir = OnlyPath(file) + "/CVS/Entries";
 244         string const tmpf = "/" + OnlyFilename(file) + "/";
 245         lyxerr[Debug::LYXVC] << "LyXVC: checking in `" << dir
 246                              << "' for `" << tmpf << '\'' << endl;
 247         FileInfo const f(dir);
 248         if (f.readable()) {
 249                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 250                 // and see if we can find this file. We do a fast and
 251                 // dirty parse here.
 252                 ifstream ifs(dir.c_str());
 253                 string line;
 254                 while (getline(ifs, line)) {
 255                         lyxerr[Debug::LYXVC] << "\tEntries: " << line << endl;
 256                         if (contains(line, tmpf)) return dir;
 257                 }
 258         }
 259         return string();
 260 }
 261
 262
 263 void CVS::scanMaster()
 264 {
 265         lyxerr[Debug::LYXVC] << "LyXVC::CVS: scanMaster. \n     Checking: "
 266                              << master_ << endl;
 267         // Ok now we do the real scan...
 268         ifstream ifs(master_.c_str());
 269         string tmpf = "/" + OnlyFilename(file_) + "/";
 270         lyxerr[Debug::LYXVC] << "\tlooking for `" << tmpf << '\'' << endl;
 271         string line;
 272         regex reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 273         while (getline(ifs, line)) {
 274                 lyxerr[Debug::LYXVC] << "\t  line: " << line << endl;
 275                 if (contains(line, tmpf)) {
 276                         // Ok extract the fields.
 277 #ifndef USE_INCLUDED_STRING
 278                         smatch sm;
 279 #else
 280                         cmatch sm;
 281 #endif
 282                         regex_match(STRCONV(line), sm, reg);
 283
 284                         //sm[0]; // whole matched string
 285                         //sm[1]; // filename
 286                         version_ = STRCONV(sm.str(2));
 287                         string const file_date = STRCONV(sm.str(3));
 288
 289                         //sm[4]; // options
 290                         //sm[5]; // tag or tagdate
 291                         FileInfo fi(file_);
 292                         // FIXME: must double check file is stattable/existing
 293                         time_t mod = fi.getModificationTime();
 294                         string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 295                         lyxerr[Debug::LYXVC]
 296                                 <<  "Date in Entries: `" << file_date
 297                                 << "'\nModification date of file: `"
 298                                 << mod_date << '\'' << endl;
 299                         if (file_date == mod_date) {
 300                                 locker_ = "Unlocked";
 301                                 vcstatus = UNLOCKED;
 302                         } else {
 303                                 // Here we should also to some more checking
 304                                 // to see if there are conflicts or not.
 305                                 locker_ = "Locked";
 306                                 vcstatus = LOCKED;
 307                         }
 308                         break;
 309                 }
 310         }
 311 }
 312
 313
 314 void CVS::registrer(string const & msg)
 315 {
 316         doVCCommand("cvs -q add -m \"" + msg + "\" \""
 317                     + OnlyFilename(owner_->fileName()) + '"',
 318                     owner_->filePath());
 319 }
 320
 321
 322 void CVS::checkIn(string const & msg)
 323 {
 324         doVCCommand("cvs -q commit -m \"" + msg + "\" \""
 325                     + OnlyFilename(owner_->fileName()) + '"',
 326                     owner_->filePath());
 327 }
 328
 329
 330 void CVS::checkOut()
 331 {
 332         // cvs update or perhaps for cvs this should be a noop
 333         lyxerr << "Sorry not implemented." << endl;
 334 }
 335
 336
 337 void CVS::revert()
 338 {
 339         // Reverts to the version in CVS repository and
 340         // gets the updated version from the repository.
 341         string const fil = OnlyFilename(owner_->fileName());
 342
 343         doVCCommand("rm -f \"" + fil + "\"; cvs update \"" + fil + '"',
 344                     owner_->filePath());
 345         owner_->markClean();
 346 }
 347
 348
 349 void CVS::undoLast()
 350 {
 351         // merge the current with the previous version
 352         // in a reverse patch kind of way, so that the
 353         // result is to revert the last changes.
 354         lyxerr << "Sorry not implemented." << endl;
 355 }
 356
 357
 358 void CVS::getLog(string const & tmpf)
 359 {
 360         doVCCommand("cvs log \""
 361                     + OnlyFilename(owner_->fileName()) + "\" > " + tmpf,
 362                     owner_->filePath());
 363 }