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