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::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 namespace fs = boost::filesystem;
  53
  54
  55 int VCS::doVCCommand(string const & cmd, string const & path)
  56 {
  57         lyxerr[Debug::LYXVC] << "doVCCommand: " << cmd << endl;
  58         Systemcall one;
  59         Path p(path);
  60         int const ret = one.startscript(Systemcall::Wait, cmd);
  61         return ret;
  62 }
  63
  64
  65 RCS::RCS(string const & m)
  66 {
  67         master_ = m;
  68         scanMaster();
  69 }
  70
  71
  72 string const RCS::find_file(string const & file)
  73 {
  74         string tmp(file);
  75         // Check if *,v exists.
  76         tmp += ",v";
  77         lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  78                              << tmp << endl;
  79         if (fs::is_readable(tmp)) {
  80                 lyxerr[Debug::LYXVC] << "Yes " << file
  81                                      << " is under rcs." << endl;
  82                 return tmp;
  83         } else {
  84                 // Check if RCS/*,v exists.
  85                 tmp = AddName(AddPath(OnlyPath(file), "RCS"), file);
  86                 tmp += ",v";
  87                 lyxerr[Debug::LYXVC] << "Checking if file is under rcs: "
  88                                      << tmp << endl;
  89                 if (fs::is_readable(tmp)) {
  90                         lyxerr[Debug::LYXVC] << "Yes " << file
  91                                              << " it is under rcs."<< endl;
  92                         return tmp;
  93                 }
  94         }
  95         return string();
  96 }
  97
  98
  99 void RCS::retrieve(string const & file)
 100 {
 101         lyxerr[Debug::LYXVC] << "LyXVC::RCS: retrieve.\n\t" << file << endl;
 102         VCS::doVCCommand("co -q -r \""
 103                          + 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 += OnlyFilename(owner_->fileName());
 178         cmd += '"';
 179         doVCCommand(cmd, owner_->filePath());
 180 }
 181
 182
 183 void RCS::checkIn(string const & msg)
 184 {
 185         doVCCommand("ci -q -u -m\"" + msg + "\" \""
 186                     + OnlyFilename(owner_->fileName()) + '"',
 187                     owner_->filePath());
 188 }
 189
 190
 191 void RCS::checkOut()
 192 {
 193         owner_->markClean();
 194         doVCCommand("co -q -l \""
 195                     + OnlyFilename(owner_->fileName()) + '"',
 196                     owner_->filePath());
 197 }
 198
 199
 200 void RCS::revert()
 201 {
 202         doVCCommand("co -f -u" + version() + " \""
 203                     + OnlyFilename(owner_->fileName()) + '"',
 204                     owner_->filePath());
 205         // We ignore changes and just reload!
 206         owner_->markClean();
 207 }
 208
 209
 210 void RCS::undoLast()
 211 {
 212         lyxerr[Debug::LYXVC] << "LyXVC: undoLast" << endl;
 213         doVCCommand("rcs -o" + version() + " \""
 214                     + OnlyFilename(owner_->fileName()) + '"',
 215                     owner_->filePath());
 216 }
 217
 218
 219 void RCS::getLog(string const & tmpf)
 220 {
 221         doVCCommand("rlog \""
 222                     + OnlyFilename(owner_->fileName()) + "\" > "
 223                     + tmpf, owner_->filePath());
 224 }
 225
 226
 227 CVS::CVS(string const & m, string const & f)
 228 {
 229         master_ = m;
 230         file_ = f;
 231         scanMaster();
 232 }
 233
 234
 235 string const CVS::find_file(string const & file)
 236 {
 237         // First we look for the CVS/Entries in the same dir
 238         // where we have file.
 239         string const dir = OnlyPath(file) + "/CVS/Entries";
 240         string const tmpf = "/" + OnlyFilename(file) + "/";
 241         lyxerr[Debug::LYXVC] << "LyXVC: checking in `" << dir
 242                              << "' for `" << tmpf << '\'' << endl;
 243         if (fs::is_readable(dir)) {
 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                         // FIXME: must double check file is stattable/existing
 284                         time_t mod = fs::last_write_time(file_);
 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 }