lyx_mirror/src/DepTable.C

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/**
* \file DepTable.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bj<EFBFBD>nnes
* \author Jean-Marc Lasgouttes
* \author Ben Stanley
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "DepTable.h"
#include "debug.h"
#include "support/lyxlib.h"
#include "support/filetools.h"
#include "support/lstrings.h"
#include "support/lyxtime.h"
#include <sys/stat.h>
#include <fstream>
#ifndef CXX_GLOBAL_CSTD
using std::time;
#endif
using lyx::support::ltrim;
using lyx::support::MakeAbsPath;
using lyx::support::OnlyFilename;
using lyx::support::suffixIs;
using lyx::support::sum;
using std::endl;
using std::flush;
using std::getline;
using std::string;
using std::ofstream;
using std::ifstream;
inline
bool DepTable::dep_info::changed() const
{
return crc_prev != crc_cur && crc_cur != 0;
}
void DepTable::insert(string const & fi, bool upd)
{
// not quite sure if this is the correct place for MakeAbsPath
string const f = MakeAbsPath(fi);
if (deplist.find(f) == deplist.end()) {
dep_info di;
di.crc_prev = 0;
if (upd) {
lyxerr[Debug::DEPEND] << " CRC..." << flush;
di.crc_cur = sum(f);
lyxerr[Debug::DEPEND] << "done." << endl;
struct stat f_info;
stat(fi.c_str(), &f_info);
di.mtime_cur = f_info.st_mtime;
} else {
di.crc_cur = 0;
di.mtime_cur = 0;
}
deplist[f] = di;
} else {
lyxerr[Debug::DEPEND] << " Already in DepTable" << endl;
}
}
void DepTable::update()
{
lyxerr[Debug::DEPEND] << "Updating DepTable..." << endl;
lyx::time_type const start_time = lyx::current_time();
DepList::iterator itr = deplist.begin();
while (itr != deplist.end()) {
dep_info &di = itr->second;
struct stat f_info;
if (stat(itr->first.c_str(), &f_info) == 0) {
if (di.mtime_cur == f_info.st_mtime) {
di.crc_prev = di.crc_cur;
lyxerr[Debug::DEPEND] << itr->first << " same mtime" << endl;
} else {
di.crc_prev = di.crc_cur;
lyxerr[Debug::DEPEND] << itr->first << " CRC... " << flush;
di.crc_cur = sum(itr->first);
lyxerr[Debug::DEPEND] << "done" << endl;
}
} else {
// file doesn't exist
// remove stale files - if it's re-created, it
// will be re-inserted by deplog.
lyxerr[Debug::DEPEND] << itr->first
<< " doesn't exist. removing from DepTable." << endl;
DepList::iterator doomed = itr++;
deplist.erase(doomed);
continue;
}
if (lyxerr.debugging(Debug::DEPEND)) {
if (di.changed())
lyxerr << " +";
lyxerr << endl;
}
++itr;
}
lyx::time_type const time_sec = lyx::current_time() - start_time;
lyxerr[Debug::DEPEND] << "Finished updating DepTable ("
<< time_sec << " sec)." << endl;
}
bool DepTable::sumchange() const
{
DepList::const_iterator cit = deplist.begin();
DepList::const_iterator end = deplist.end();
for (; cit != end; ++cit) {
if (cit->second.changed()) return true;
}
return false;
}
bool DepTable::haschanged(string const & f) const
{
// not quite sure if this is the correct place for MakeAbsPath
string const fil = MakeAbsPath(f);
DepList::const_iterator cit = deplist.find(fil);
if (cit != deplist.end()) {
if (cit->second.changed())
return true;
}
return false;
}
bool DepTable::extchanged(string const & ext) const
{
DepList::const_iterator cit = deplist.begin();
DepList::const_iterator end = deplist.end();
for (; cit != end; ++cit) {
if (suffixIs(cit->first, ext)) {
if (cit->second.changed())
return true;
}
}
return false;
}
bool DepTable::ext_exist(string const & ext) const
{
DepList::const_iterator cit = deplist.begin();
DepList::const_iterator end = deplist.end();
for (; cit != end; ++cit) {
if (suffixIs(cit->first, ext)) {
return true;
}
}
return false;
}
bool DepTable::exist(string const & fil) const
{
return deplist.find(fil) != deplist.end();
}
void DepTable::remove_files_with_extension(string const & suf)
{
DepList::iterator cit = deplist.begin();
DepList::iterator end = deplist.end();
while (cit != end) {
if (suffixIs(cit->first, suf)) {
// Can't erase the current iterator, but we
// can increment and then erase.
// Deplist is a map so only the erased
// iterator is invalidated.
DepList::iterator doomed = cit++;
deplist.erase(doomed);
continue;
}
++cit;
}
}
void DepTable::remove_file(string const & filename)
{
DepList::iterator cit = deplist.begin();
DepList::iterator end = deplist.end();
while (cit != end) {
if (OnlyFilename(cit->first) == filename) {
// Can't erase the current iterator, but we
// can increment and then erase.
// deplist is a map so only the erased
// iterator is invalidated.
DepList::iterator doomed = cit++;
deplist.erase(doomed);
continue;
}
++cit;
}
}
void DepTable::write(string const & f) const
{
ofstream ofs(f.c_str());
DepList::const_iterator cit = deplist.begin();
DepList::const_iterator end = deplist.end();
for (; cit != end; ++cit) {
if (lyxerr.debugging(Debug::DEPEND)) {
// Store the second (most recently calculated)
// CRC value.
// The older one is effectively set to 0 upon re-load.
lyxerr << "Write dep: "
<< cit->second.crc_cur << ' '
<< cit->second.mtime_cur << ' '
<< cit->first << endl;
}
ofs << cit->second.crc_cur << ' '
<< cit->second.mtime_cur << ' '
<< cit->first << endl;
}
}
bool DepTable::read(string const & f)
{
ifstream ifs(f.c_str());
string nome;
dep_info di;
// This doesn't change through the loop.
di.crc_prev = 0;
while (ifs >> di.crc_cur >> di.mtime_cur && getline(ifs, nome)) {
nome = ltrim(nome);
if (lyxerr.debugging(Debug::DEPEND)) {
lyxerr << "Read dep: "
<< di.crc_cur << ' '
<< di.mtime_cur << ' '
<< nome << endl;
}
deplist[nome] = di;
}
return deplist.size();
}