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https://git.lyx.org/repos/lyx.git
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c46162db23
We currently cannot restore multiple views of the same buffer properly. On the mac, we even crash. So do not try it, record each file only once in the last opened list. Fixes: #9483.
447 lines
10 KiB
C++
447 lines
10 KiB
C++
/**
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* \file Session.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars Gullik Bjønnes
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* \author Bo Peng
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "Session.h"
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#include "support/debug.h"
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#include "support/filetools.h"
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#include "support/Package.h"
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#include <fstream>
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#include <sstream>
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#include <algorithm>
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#include <iterator>
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using namespace std;
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using namespace lyx::support;
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namespace {
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string const sec_lastfiles = "[recent files]";
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string const sec_lastfilepos = "[cursor positions]";
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string const sec_lastopened = "[last opened files]";
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string const sec_bookmarks = "[bookmarks]";
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string const sec_session = "[session info]";
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string const sec_toolbars = "[toolbars]";
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string const sec_lastcommands = "[last commands]";
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} // anon namespace
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namespace lyx {
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LastFilesSection::LastFilesSection(unsigned int num) :
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default_num_last_files(4),
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absolute_max_last_files(100)
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{
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setNumberOfLastFiles(num);
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}
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void LastFilesSection::read(istream & is)
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{
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string tmp;
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do {
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char c = is.peek();
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if (c == '[')
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break;
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getline(is, tmp);
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if (tmp.empty() || tmp[0] == '#' || tmp[0] == ' ' || !FileName::isAbsolute(tmp))
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continue;
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// read lastfiles
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FileName const file(tmp);
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if (file.exists() && !file.isDirectory()
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&& lastfiles.size() < num_lastfiles)
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lastfiles.push_back(file);
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else
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LYXERR(Debug::INIT, "LyX: Warning: Ignore last file: " << tmp);
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} while (is.good());
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}
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void LastFilesSection::write(ostream & os) const
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{
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os << '\n' << sec_lastfiles << '\n';
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copy(lastfiles.begin(), lastfiles.end(),
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ostream_iterator<FileName>(os, "\n"));
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}
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void LastFilesSection::add(FileName const & file)
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{
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// If file already exist, delete it and reinsert at front.
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LastFiles::iterator it = find(lastfiles.begin(), lastfiles.end(), file);
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if (it != lastfiles.end())
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lastfiles.erase(it);
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lastfiles.insert(lastfiles.begin(), file);
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if (lastfiles.size() > num_lastfiles)
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lastfiles.pop_back();
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}
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void LastFilesSection::setNumberOfLastFiles(unsigned int no)
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{
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if (0 < no && no <= absolute_max_last_files)
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num_lastfiles = no;
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else {
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LYXERR(Debug::INIT, "LyX: session: too many last files\n"
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<< "\tdefault (=" << default_num_last_files << ") used.");
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num_lastfiles = default_num_last_files;
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}
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}
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void LastOpenedSection::read(istream & is)
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{
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string tmp;
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do {
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char c = is.peek();
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if (c == '[')
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break;
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getline(is, tmp);
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if (tmp.empty() || tmp[0] == '#' || tmp[0] == ' ')
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continue;
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try {
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LastOpenedFile lof;
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istringstream itmp(tmp);
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itmp >> lof.active;
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itmp.ignore(2); // ignore ", "
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string fname;
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getline(itmp, fname);
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if (!FileName::isAbsolute(fname))
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continue;
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FileName const file(fname);
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if (file.exists() && !file.isDirectory()) {
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lof.file_name = file;
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lastopened.push_back(lof);
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} else {
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LYXERR(Debug::INIT,
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"LyX: Warning: Ignore last opened file: " << tmp);
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}
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} catch (...) {
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LYXERR(Debug::INIT,
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"LyX: Warning: unknown state of last opened file: " << tmp);
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}
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} while (is.good());
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}
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void LastOpenedSection::write(ostream & os) const
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{
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os << '\n' << sec_lastopened << '\n';
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for (size_t i = 0; i < lastopened.size(); ++i)
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os << lastopened[i].active << ", " << lastopened[i].file_name << '\n';
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}
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void LastOpenedSection::add(FileName const & file, bool active)
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{
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LastOpenedFile lof(file, active);
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// check if file is already recorded (this can happen
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// with multiple buffer views). We do only record each
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// file once, since we cannot restore multiple views
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// currently, we even crash in some cases (see #9483).
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// FIXME: Add session support for multiple views of
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// the same buffer (split-view etc.).
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for (size_t i = 0; i < lastopened.size(); ++i) {
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if (lastopened[i].file_name == file)
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return;
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}
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lastopened.push_back(lof);
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}
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void LastOpenedSection::clear()
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{
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lastopened.clear();
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}
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void LastFilePosSection::read(istream & is)
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{
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string tmp;
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do {
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char c = is.peek();
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if (c == '[')
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break;
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getline(is, tmp);
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if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
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continue;
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try {
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// read lastfilepos
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// pos, file\n
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FilePos filepos;
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string fname;
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istringstream itmp(tmp);
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itmp >> filepos.pit;
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itmp.ignore(2); // ignore ", "
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itmp >> filepos.pos;
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itmp.ignore(2); // ignore ", "
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getline(itmp, fname);
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if (!FileName::isAbsolute(fname))
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continue;
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FileName const file(fname);
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if (file.exists() && !file.isDirectory()
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&& lastfilepos.size() < num_lastfilepos)
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lastfilepos[file] = filepos;
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else
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LYXERR(Debug::INIT, "LyX: Warning: Ignore pos of last file: " << fname);
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} catch (...) {
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LYXERR(Debug::INIT, "LyX: Warning: unknown pos of last file: " << tmp);
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}
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} while (is.good());
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}
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void LastFilePosSection::write(ostream & os) const
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{
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os << '\n' << sec_lastfilepos << '\n';
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for (FilePosMap::const_iterator file = lastfilepos.begin();
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file != lastfilepos.end(); ++file) {
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os << file->second.pit << ", " << file->second.pos << ", "
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<< file->first << '\n';
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}
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}
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void LastFilePosSection::save(FileName const & fname, FilePos const & pos)
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{
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lastfilepos[fname] = pos;
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}
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LastFilePosSection::FilePos LastFilePosSection::load(FileName const & fname) const
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{
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FilePosMap::const_iterator entry = lastfilepos.find(fname);
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// Has position information, return it.
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if (entry != lastfilepos.end())
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return entry->second;
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// Not found, return the first paragraph
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return FilePos();
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}
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void BookmarksSection::clear()
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{
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// keep bookmark[0], the temporary one
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bookmarks.resize(1);
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bookmarks.resize(max_bookmarks + 1);
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}
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void BookmarksSection::read(istream & is)
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{
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string tmp;
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do {
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char c = is.peek();
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if (c == '[')
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break;
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getline(is, tmp);
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if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
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continue;
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try {
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// read bookmarks
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// idx, pit, pos, file\n
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unsigned int idx;
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pit_type pit;
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pos_type pos;
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string fname;
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istringstream itmp(tmp);
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itmp >> idx;
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itmp.ignore(2); // ignore ", "
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itmp >> pit;
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itmp.ignore(2); // ignore ", "
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itmp >> pos;
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itmp.ignore(2); // ignore ", "
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getline(itmp, fname);
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if (!FileName::isAbsolute(fname))
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continue;
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FileName const file(fname);
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// only load valid bookmarks
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if (file.exists() && !file.isDirectory() && idx <= max_bookmarks)
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bookmarks[idx] = Bookmark(file, pit, pos, 0, 0);
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else
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LYXERR(Debug::INIT, "LyX: Warning: Ignore bookmark of file: " << fname);
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} catch (...) {
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LYXERR(Debug::INIT, "LyX: Warning: unknown Bookmark info: " << tmp);
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}
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} while (is.good());
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}
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void BookmarksSection::write(ostream & os) const
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{
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os << '\n' << sec_bookmarks << '\n';
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for (size_t i = 0; i <= max_bookmarks; ++i) {
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if (isValid(i))
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os << i << ", "
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<< bookmarks[i].bottom_pit << ", "
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<< bookmarks[i].bottom_pos << ", "
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<< bookmarks[i].filename << '\n';
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}
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}
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void BookmarksSection::save(FileName const & fname,
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pit_type bottom_pit, pos_type bottom_pos,
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int top_id, pos_type top_pos, unsigned int idx)
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{
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// silently ignore bookmarks when idx is out of range
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if (idx <= max_bookmarks)
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bookmarks[idx] = Bookmark(fname, bottom_pit, bottom_pos, top_id, top_pos);
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}
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bool BookmarksSection::isValid(unsigned int i) const
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{
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return i <= max_bookmarks && !bookmarks[i].filename.empty();
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}
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bool BookmarksSection::hasValid() const
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{
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for (size_t i = 1; i <= size(); ++i) {
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if (isValid(i))
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return true;
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}
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return false;
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}
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BookmarksSection::Bookmark const & BookmarksSection::bookmark(unsigned int i) const
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{
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return bookmarks[i];
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}
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LastCommandsSection::LastCommandsSection(unsigned int num) :
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default_num_last_commands(30),
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absolute_max_last_commands(100)
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{
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setNumberOfLastCommands(num);
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}
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void LastCommandsSection::read(istream & is)
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{
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string tmp;
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do {
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char c = is.peek();
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if (c == '[')
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break;
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getline(is, tmp);
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if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
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continue;
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lastcommands.push_back(tmp);
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} while (is.good());
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}
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void LastCommandsSection::write(ostream & os) const
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{
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os << '\n' << sec_lastcommands << '\n';
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copy(lastcommands.begin(), lastcommands.end(),
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ostream_iterator<std::string>(os, "\n"));
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}
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void LastCommandsSection::setNumberOfLastCommands(unsigned int no)
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{
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if (0 < no && no <= absolute_max_last_commands)
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num_lastcommands = no;
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else {
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LYXERR(Debug::INIT, "LyX: session: too many last commands\n"
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<< "\tdefault (=" << default_num_last_commands << ") used.");
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num_lastcommands = default_num_last_commands;
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}
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}
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void LastCommandsSection::add(std::string const & string)
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{
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lastcommands.push_back(string);
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}
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void LastCommandsSection::clear()
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{
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lastcommands.clear();
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}
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Session::Session(unsigned int num_last_files, unsigned int num_last_commands) :
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last_files(num_last_files), last_commands(num_last_commands)
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{
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// locate the session file
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// note that the session file name 'session' is hard-coded
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session_file = FileName(addName(package().user_support().absFileName(), "session"));
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//
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readFile();
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}
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void Session::readFile()
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{
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// we will not complain if we can't find session_file nor will
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// we issue a warning. (Lgb)
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ifstream is(session_file.toFilesystemEncoding().c_str());
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string tmp;
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while (getline(is, tmp)) {
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// Ignore comments, empty line or line stats with ' '
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if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
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continue;
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// Determine section id
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if (tmp == sec_lastfiles)
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lastFiles().read(is);
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else if (tmp == sec_lastopened)
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lastOpened().read(is);
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else if (tmp == sec_lastfilepos)
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lastFilePos().read(is);
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else if (tmp == sec_bookmarks)
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bookmarks().read(is);
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else if (tmp == sec_lastcommands)
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lastCommands().read(is);
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else
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LYXERR(Debug::INIT, "LyX: Warning: unknown Session section: " << tmp);
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}
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}
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void Session::writeFile() const
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{
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ofstream os(session_file.toFilesystemEncoding().c_str());
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if (os) {
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os << "## Automatically generated lyx session file \n"
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<< "## Editing this file manually may cause lyx to crash.\n";
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lastFiles().write(os);
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lastOpened().write(os);
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lastFilePos().write(os);
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lastCommands().write(os);
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bookmarks().write(os);
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} else
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LYXERR(Debug::INIT, "LyX: Warning: unable to save Session: "
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<< session_file);
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}
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}
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