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 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
  53 int VCS::doVCCommand(string const & cmd, string const & path)
  54 {
  55         lyxerr[Debug::LYXVC] << "doVCCommand: " << cmd << endl;
  56         Systemcall one;
  57         Path p(path);
  58         int const ret = one.startscript(Systemcall::Wait, cmd);
  59         return ret;
  60 }
  61
  62
  63 RCS::RCS(string const & m)
  64 {
  65         master_ = m;
  66         scanMaster();
  67 }
  68
  69
  70 string const RCS::find_file(string const & file)
  71 {
  72         string tmp(file);
  73         // Check if *,v exists.
  74         tmp += ",v";
  75         FileInfo f;
  76         lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  77                              << tmp << endl;
  78         if (f.newFile(tmp).readable()) {
  79                 lyxerr[Debug::LYXVC] << "Yes " << file
  80                                      << " is under rcs." << endl;
  81                 return tmp;
  82         } else {
  83                 // Check if RCS/*,v exists.
  84                 tmp = AddName(AddPath(OnlyPath(file), "RCS"), file);
  85                 tmp += ",v";
  86                 lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  87                                      << tmp << endl;
  88                 if (f.newFile(tmp).readable()) {
  89                         lyxerr[Debug::LYXVC] << "Yes " << file
  90                                              << " it is under rcs."<< endl;
  91                         return tmp;
  92                 }
  93         }
  94         return string();
  95 }
  96
  97
  98 void RCS::retrieve(string const & file)
  99 {
 100         lyxerr[Debug::LYXVC] << "LyXVC::RCS: retrieve.\n\t" << file << endl;
 101         VCS::doVCCommand("co -q -r \""
 102                          + 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 += OnlyFilename(owner_->fileName());
 177         cmd += '"';
 178         doVCCommand(cmd, owner_->filePath());
 179 }
 180
 181
 182 void RCS::checkIn(string const & msg)
 183 {
 184         doVCCommand("ci -q -u -m\"" + msg + "\" \""
 185                     + OnlyFilename(owner_->fileName()) + '"',
 186                     owner_->filePath());
 187 }
 188
 189
 190 void RCS::checkOut()
 191 {
 192         owner_->markClean();
 193         doVCCommand("co -q -l \""
 194                     + OnlyFilename(owner_->fileName()) + '"',
 195                     owner_->filePath());
 196 }
 197
 198
 199 void RCS::revert()
 200 {
 201         doVCCommand("co -f -u" + version() + " \""
 202                     + OnlyFilename(owner_->fileName()) + '"',
 203                     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                     + OnlyFilename(owner_->fileName()) + '"',
 214                     owner_->filePath());
 215 }
 216
 217
 218 void RCS::getLog(string const & tmpf)
 219 {
 220         doVCCommand("rlog \""
 221                     + OnlyFilename(owner_->fileName()) + "\" > "
 222                     + tmpf, owner_->filePath());
 223 }
 224
 225
 226 CVS::CVS(string const & m, string const & f)
 227 {
 228         master_ = m;
 229         file_ = f;
 230         scanMaster();
 231 }
 232
 233
 234 string const CVS::find_file(string const & file)
 235 {
 236         // First we look for the CVS/Entries in the same dir
 237         // where we have file.
 238         string const dir = OnlyPath(file) + "/CVS/Entries";
 239         string const tmpf = "/" + OnlyFilename(file) + "/";
 240         lyxerr[Debug::LYXVC] << "LyXVC: checking in `" << dir
 241                              << "' for `" << tmpf << '\'' << endl;
 242         FileInfo const f(dir);
 243         if (f.readable()) {
 244                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 245                 // and see if we can find this file. We do a fast and
 246                 // dirty parse here.
 247                 ifstream ifs(dir.c_str());
 248                 string line;
 249                 while (getline(ifs, line)) {
 250                         lyxerr[Debug::LYXVC] << "\tEntries: " << line << endl;
 251                         if (contains(line, tmpf)) return dir;
 252                 }
 253         }
 254         return string();
 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_.c_str());
 264         string tmpf = "/" + OnlyFilename(file_) + "/";
 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                         FileInfo fi(file_);
 284                         // FIXME: must double check file is stattable/existing
 285                         time_t mod = fi.getModificationTime();
 286                         string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 287                         lyxerr[Debug::LYXVC]
 288                                 <<  "Date in Entries: `" << file_date
 289                                 << "'\nModification date of file: `"
 290                                 << mod_date << '\'' << endl;
 291                         if (file_date == mod_date) {
 292                                 locker_ = "Unlocked";
 293                                 vcstatus = UNLOCKED;
 294                         } else {
 295                                 // Here we should also to some more checking
 296                                 // to see if there are conflicts or not.
 297                                 locker_ = "Locked";
 298                                 vcstatus = LOCKED;
 299                         }
 300                         break;
 301                 }
 302         }
 303 }
 304
 305
 306 void CVS::registrer(string const & msg)
 307 {
 308         doVCCommand("cvs -q add -m \"" + msg + "\" \""
 309                     + OnlyFilename(owner_->fileName()) + '"',
 310                     owner_->filePath());
 311 }
 312
 313
 314 void CVS::checkIn(string const & msg)
 315 {
 316         doVCCommand("cvs -q commit -m \"" + msg + "\" \""
 317                     + OnlyFilename(owner_->fileName()) + '"',
 318                     owner_->filePath());
 319 }
 320
 321
 322 void CVS::checkOut()
 323 {
 324         // cvs update or perhaps for cvs this should be a noop
 325         lyxerr << "Sorry not implemented." << endl;
 326 }
 327
 328
 329 void CVS::revert()
 330 {
 331         // Reverts to the version in CVS repository and
 332         // gets the updated version from the repository.
 333         string const fil = OnlyFilename(owner_->fileName());
 334
 335         doVCCommand("rm -f \"" + fil + "\"; cvs update \"" + fil + '"',
 336                     owner_->filePath());
 337         owner_->markClean();
 338 }
 339
 340
 341 void CVS::undoLast()
 342 {
 343         // merge the current with the previous version
 344         // in a reverse patch kind of way, so that the
 345         // result is to revert the last changes.
 346         lyxerr << "Sorry not implemented." << endl;
 347 }
 348
 349
 350 void CVS::getLog(string const & tmpf)
 351 {
 352         doVCCommand("cvs log \""
 353                     + OnlyFilename(owner_->fileName()) + "\" > " + tmpf,
 354                     owner_->filePath());
 355 }