Line data    Source code

       1             : /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       2             :    Copyright (c) 2012-2023 The plumed team
       3             :    (see the PEOPLE file at the root of the distribution for a list of names)
       4             : 
       5             :    See http://www.plumed.org for more information.
       6             : 
       7             :    This file is part of plumed, version 2.
       8             : 
       9             :    plumed is free software: you can redistribute it and/or modify
      10             :    it under the terms of the GNU Lesser General Public License as published by
      11             :    the Free Software Foundation, either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    plumed is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU Lesser General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU Lesser General Public License
      20             :    along with plumed.  If not, see <http://www.gnu.org/licenses/>.
      21             : +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
      22             : #include "FileBase.h"
      23             : #include "Exception.h"
      24             : #include "core/Action.h"
      25             : #include "core/PlumedMain.h"
      26             : #include "core/Value.h"
      27             : #include "Communicator.h"
      28             : #include "Tools.h"
      29             : #include <cstdarg>
      30             : #include <cstring>
      31             : #include <cstdlib>
      32             : 
      33             : #include <iostream>
      34             : #include <string>
      35             : 
      36             : #ifdef __PLUMED_HAS_ZLIB
      37             : #include <zlib.h>
      38             : #endif
      39             : 
      40             : namespace PLMD {
      41             : 
      42       21182 : FileBase& FileBase::link(FILE*fp) {
      43       21182 :   plumed_massert(!this->fp,"cannot link an already open file");
      44       21182 :   this->fp=fp;
      45       21182 :   cloned=true;
      46       21182 :   return *this;
      47             : }
      48             : 
      49        5692 : FileBase& FileBase::flush() {
      50        5692 :   if(fp) fflush(fp);
      51        5692 :   return *this;
      52             : }
      53             : 
      54      812265 : FileBase& FileBase::link(Communicator&comm) {
      55      812265 :   plumed_massert(!fp,"cannot link an already open file");
      56      812265 :   this->comm=&comm;
      57      812265 :   return *this;
      58             : }
      59             : 
      60        5352 : FileBase& FileBase::link(PlumedMain&plumed) {
      61        5352 :   plumed_massert(!fp,"cannot link an already open file");
      62        5352 :   this->plumed=&plumed;
      63        5352 :   link(plumed.comm);
      64        5352 :   return *this;
      65             : }
      66             : 
      67        4321 : FileBase& FileBase::link(Action&action) {
      68        4321 :   plumed_massert(!fp,"cannot link an already open file");
      69        4321 :   this->action=&action;
      70        4321 :   link(action.plumed);
      71        4321 :   return *this;
      72             : }
      73             : 
      74        2029 : bool FileBase::FileExist(const std::string& path) {
      75             :   bool do_exist=false;
      76        4058 :   this->path=appendSuffix(path,getSuffix());
      77        2029 :   mode="r";
      78             :   // first try with suffix
      79        2029 :   FILE *ff=std::fopen(const_cast<char*>(this->path.c_str()),"r");
      80             : // call fclose when ff goes out of scope
      81        1523 :   auto deleter=[](auto f) { if(f) std::fclose(f); };
      82             :   std::unique_ptr<FILE,decltype(deleter)> fp_deleter(ff,deleter);
      83             : 
      84        2029 :   if(!ff) {
      85             :     this->path=path;
      86             :     // then try without suffic
      87         506 :     ff=std::fopen(const_cast<char*>(this->path.c_str()),"r");
      88             :     mode="r";
      89             :   }
      90        2029 :   if(ff) do_exist=true;
      91        2029 :   if(comm) comm->Barrier();
      92        2029 :   return do_exist;
      93             : }
      94             : 
      95      814317 : bool FileBase::isOpen() {
      96             :   bool isopen=false;
      97      814317 :   if(fp) isopen=true;
      98      814317 :   return isopen;
      99             : }
     100             : 
     101        1017 : void        FileBase::close() {
     102        1017 :   plumed_assert(!cloned);
     103        1017 :   eof=false;
     104        1017 :   err=false;
     105        1017 :   if(fp)   std::fclose(fp);
     106             : #ifdef __PLUMED_HAS_ZLIB
     107        1017 :   if(gzfp) gzclose(gzFile(gzfp));
     108             : #endif
     109        1017 :   fp=NULL;
     110        1017 :   gzfp=NULL;
     111        1017 : }
     112             : 
     113      833719 : FileBase::FileBase():
     114      833719 :   fp(NULL),
     115      833719 :   gzfp(NULL),
     116      833719 :   comm(NULL),
     117      833719 :   plumed(NULL),
     118      833719 :   action(NULL),
     119      833719 :   cloned(false),
     120      833719 :   eof(false),
     121      833719 :   err(false),
     122      833719 :   heavyFlush(false),
     123      833719 :   enforcedSuffix_(false)
     124             : {
     125      833719 : }
     126             : 
     127      833719 : FileBase::~FileBase()
     128             : {
     129      833719 :   if(plumed) plumed->eraseFile(*this);
     130      833719 :   if(!cloned && fp)   std::fclose(fp);
     131             : #ifdef __PLUMED_HAS_ZLIB
     132      833719 :   if(!cloned && gzfp) gzclose(gzFile(gzfp));
     133             : #endif
     134      833719 : }
     135             : 
     136    31254961 : FileBase::operator bool()const {
     137    31254961 :   return !eof;
     138             : }
     139             : 
     140        7362 : std::string FileBase::appendSuffix(const std::string&path,const std::string&suffix) {
     141        7362 :   if(path=="/dev/null") return path; // do not append a suffix to /dev/null
     142        7187 :   std::string ret=path;
     143        7187 :   std::string ext=Tools::extension(path);
     144             : 
     145             : // These are the recognized extensions so far:
     146             : // gz xtc trr
     147             : // If a file name ends with one of these extensions, the suffix is added *before*
     148             : // the extension. This is useful when extensions are conventionally used
     149             : // to detect file type, so as to allow easier file manipulation.
     150             : // Removing this line, any extension recognized by Tools::extension() would be considered
     151             : //  if(ext!="gz" && ext!="xtc" && ext!="trr") ext="";
     152             : 
     153        7187 :   if(ext.length()>0) {
     154        5067 :     int l=path.length()-(ext.length()+1);
     155        5067 :     plumed_assert(l>=0);
     156        5067 :     ret.resize(l);
     157             :   }
     158             :   ret+=suffix;
     159       12254 :   if(ext.length()>0)ret+="."+ext;
     160             :   return ret;
     161             : }
     162             : 
     163         258 : FileBase& FileBase::enforceSuffix(const std::string&suffix) {
     164         258 :   enforcedSuffix_=true;
     165         258 :   enforcedSuffix=suffix;
     166         258 :   return *this;
     167             : }
     168             : 
     169        6167 : std::string FileBase::getSuffix()const {
     170        6167 :   if(enforcedSuffix_) return enforcedSuffix;
     171        5903 :   if(plumed) return plumed->getSuffix();
     172         683 :   return "";
     173             : }
     174             : 
     175             : }