lyx_mirror/src/buffer_funcs.C

262 lines
5.9 KiB
C++
Raw Normal View History

/**
* \file buffer_funcs.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 Alfredo Braunstein
*
* Full author contact details are available in file CREDITS.
*
*/
#include <config.h>
#include "buffer_funcs.h"
#include "buffer.h"
#include "bufferlist.h"
#include "bufferparams.h"
#include "dociterator.h"
#include "errorlist.h"
#include "gettext.h"
#include "LaTeX.h"
#include "paragraph.h"
#include "lyxvc.h"
#include "texrow.h"
#include "vc-backend.h"
#include "frontends/Alert.h"
#include "support/FileInfo.h"
#include "support/filetools.h"
#include "support/lyxlib.h"
#include <boost/bind.hpp>
using lyx::support::bformat;
using lyx::support::FileInfo;
using lyx::support::IsFileWriteable;
using lyx::support::LibFileSearch;
using lyx::support::MakeDisplayPath;
using lyx::support::OnlyFilename;
using lyx::support::OnlyPath;
using lyx::support::unlink;
using std::string;
extern BufferList bufferlist;
namespace {
bool readFile(Buffer * const b, string const & s)
{
BOOST_ASSERT(b);
// File information about normal file
FileInfo fileN(s);
if (!fileN.exist()) {
string const file = MakeDisplayPath(s, 50);
string text = bformat(_("The specified document\n%1$s"
"\ncould not be read."), file);
Alert::error(_("Could not read document"), text);
return false;
}
// Check if emergency save file exists and is newer.
string const e = OnlyPath(s) + OnlyFilename(s) + ".emergency";
FileInfo fileE(e);
if (fileE.exist() && fileN.exist()
&& fileE.getModificationTime() > fileN.getModificationTime())
{
string const file = MakeDisplayPath(s, 20);
string const text =
bformat(_("An emergency save of the document "
"%1$s exists.\n\n"
"Recover emergency save?"), file);
switch (Alert::prompt(_("Load emergency save?"), text, 0, 2,
_("&Recover"), _("&Load Original"),
_("&Cancel")))
{
case 0:
// the file is not saved if we load the emergency file.
b->markDirty();
return b->readFile(e);
case 1:
break;
default:
return false;
}
}
// Now check if autosave file is newer.
string const a = OnlyPath(s) + '#' + OnlyFilename(s) + '#';
FileInfo fileA(a);
if (fileA.exist() && fileN.exist()
&& fileA.getModificationTime() > fileN.getModificationTime())
{
string const file = MakeDisplayPath(s, 20);
string const text =
bformat(_("The backup of the document "
"%1$s is newer.\n\nLoad the "
"backup instead?"), file);
switch (Alert::prompt(_("Load backup?"), text, 0, 2,
_("&Load backup"), _("Load &original"),
_("&Cancel") ))
{
case 0:
// the file is not saved if we load the autosave file.
b->markDirty();
return b->readFile(a);
case 1:
// Here we delete the autosave
unlink(a);
break;
default:
return false;
}
}
return b->readFile(s);
}
} // namespace anon
bool loadLyXFile(Buffer * b, string const & s)
{
BOOST_ASSERT(b);
switch (IsFileWriteable(s)) {
case 0:
b->setReadonly(true);
// Fall through
case 1:
if (readFile(b, s)) {
b->lyxvc().file_found_hook(s);
return true;
}
break;
case -1:
string const file = MakeDisplayPath(s, 20);
// Here we probably should run
if (LyXVC::file_not_found_hook(s)) {
string const text =
bformat(_("Do you want to retrieve the document"
" %1$s from version control?"), file);
int const ret = Alert::prompt(_("Retrieve from version control?"),
text, 0, 1, _("&Retrieve"), _("&Cancel"));
if (ret == 0) {
// How can we know _how_ to do the checkout?
// With the current VC support it has to be,
// a RCS file since CVS do not have special ,v files.
RCS::retrieve(s);
return loadLyXFile(b, s);
}
}
break;
}
return false;
}
Buffer * newFile(string const & filename, string const & templatename,
bool const isNamed)
{
// get a free buffer
Buffer * b = bufferlist.newBuffer(filename);
BOOST_ASSERT(b);
string tname;
// use defaults.lyx as a default template if it exists.
if (templatename.empty())
tname = LibFileSearch("templates", "defaults.lyx");
else
tname = templatename;
if (!tname.empty()) {
if (!b->readFile(tname)) {
string const file = MakeDisplayPath(tname, 50);
string const text = bformat(_("The specified document template\n%1$s\ncould not be read."), file);
Alert::error(_("Could not read template"), text);
// no template, start with empty buffer
}
}
if (!isNamed) {
b->setUnnamed();
b->setFileName(filename);
}
b->setReadonly(false);
b->fully_loaded(true);
b->updateDocLang(b->params().language);
return b;
}
void bufferErrors(Buffer const & buf, TeXErrors const & terr)
{
TeXErrors::Errors::const_iterator cit = terr.begin();
TeXErrors::Errors::const_iterator end = terr.end();
for (; cit != end; ++cit) {
int par_id = -1;
int posstart = -1;
int const errorrow = cit->error_in_line;
buf.texrow().getIdFromRow(errorrow, par_id, posstart);
int posend = -1;
buf.texrow().getIdFromRow(errorrow + 1, par_id, posend);
buf.error(ErrorItem(cit->error_desc,
cit->error_text,
par_id, posstart, posend));
}
}
void bufferErrors(Buffer const & buf, ErrorList const & el)
{
for_each(el.begin(), el.end(), bind(ref(buf.error), _1));
}
string const BufferFormat(Buffer const & buffer)
{
if (buffer.isLinuxDoc())
return "linuxdoc";
else if (buffer.isDocBook())
return "docbook";
else if (buffer.isLiterate())
return "literate";
else
return "latex";
}
int countWords(DocIterator const & from, DocIterator const & to)
{
int count = 0;
bool inword = false;
for (DocIterator dit = from ; dit != to ; dit.forwardPos()) {
// Copied and adapted from isLetter() in ControlSpellChecker
if (dit.inTexted()
&& dit.pos() != dit.lastpos()
&& dit.paragraph().isLetter(dit.pos())
&& !isDeletedText(dit.paragraph(), dit.pos())) {
if (!inword) {
++count;
inword = true;
}
} else if (inword)
inword = false;
}
return count;
}