lyx_mirror/src/DepTable.cpp

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/**
* \file DepTable.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
* \author Jean-Marc Lasgouttes
* \author Ben Stanley
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "DepTable.h"
#include "support/debug.h"
#include "support/filetools.h"
#include "support/lstrings.h"
#include "support/lyxtime.h"
#include <sys/stat.h>
#include <fstream>
using namespace std;
using namespace lyx::support;
namespace lyx {
inline
bool DepTable::dep_info::changed() const
{
return crc_prev != crc_cur && crc_cur != 0;
}
void DepTable::insert(FileName const & f, bool upd)
{
if (deplist.find(f) == deplist.end()) {
dep_info di;
di.crc_prev = 0;
if (upd) {
LYXERR(Debug::DEPEND, " CRC...");
di.crc_cur = f.checksum();
LYXERR(Debug::DEPEND, "done.");
struct stat f_info;
stat(f.toFilesystemEncoding().c_str(), &f_info);
di.mtime_cur = long(f_info.st_mtime);
} else {
di.crc_cur = 0;
di.mtime_cur = 0;
}
deplist[f] = di;
} else {
LYXERR(Debug::DEPEND, " Already in DepTable");
}
}
void DepTable::update()
{
LYXERR(Debug::DEPEND, "Updating DepTable...");
time_t const start_time = current_time();
DepList::iterator itr = deplist.begin();
while (itr != deplist.end()) {
dep_info &di = itr->second;
struct stat f_info;
if (stat(itr->first.toFilesystemEncoding().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");
} else {
di.crc_prev = di.crc_cur;
LYXERR(Debug::DEPEND, itr->first << " CRC... ");
di.crc_cur = itr->first.checksum();
LYXERR(Debug::DEPEND, "done");
}
} 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.");
DepList::iterator doomed = itr++;
deplist.erase(doomed);
continue;
}
if (lyxerr.debugging(Debug::DEPEND)) {
if (di.changed())
lyxerr << " +";
lyxerr << endl;
}
++itr;
}
time_t const time_sec = current_time() - start_time;
LYXERR(Debug::DEPEND, "Finished updating DepTable ("
<< long(time_sec) << " sec).");
}
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(FileName const & fil) const
{
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.absFileName(), 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.absFileName(), ext))
return true;
}
return false;
}
bool DepTable::exist(FileName 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.absFileName(), 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(FileName const & filename)
{
DepList::iterator cit = deplist.begin();
DepList::iterator end = deplist.end();
while (cit != end) {
if (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(FileName const & f) const
{
ofstream ofs(f.toFilesystemEncoding().c_str());
DepList::const_iterator cit = deplist.begin();
DepList::const_iterator end = deplist.end();
for (; cit != end; ++cit) {
// Store the second (most recently calculated)
// CRC value.
// The older one is effectively set to 0 upon re-load.
LYXERR(Debug::DEPEND, "Write dep: "
<< cit->second.crc_cur << ' '
<< cit->second.mtime_cur << ' '
<< cit->first);
ofs << cit->second.crc_cur << ' '
<< cit->second.mtime_cur << ' '
<< cit->first << endl;
}
}
bool DepTable::read(FileName const & f)
{
ifstream ifs(f.toFilesystemEncoding().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);
LYXERR(Debug::DEPEND, "Read dep: "
<< di.crc_cur << ' ' << di.mtime_cur << ' ' << nome);
deplist[FileName(nome)] = di;
}
return deplist.size();
}
} // namespace lyx