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lyx_mirror/src/buffer_funcs.C

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/**
* \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 "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"
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;
extern BufferList bufferlist;
namespace {
bool readFile(Buffer * b, string const & s)
{
string ts(s);
string e = OnlyPath(s);
string a = e;
// File information about normal file
FileInfo fileInfo(s);
if (!fileInfo.exist()) {
string const file = MakeDisplayPath(s, 50);
string text = bformat(_("The specified document\n%1$s"
"\ncould not be read."), file);
Alert::error(_("Could not read document"), text);
return false;
}
// Check if emergency save file exists and is newer.
e += OnlyFilename(s) + ".emergency";
FileInfo fileInfoE(e);
bool use_emergency = false;
if (fileInfoE.exist() && fileInfo.exist()) {
if (fileInfoE.getModificationTime()
> fileInfo.getModificationTime()) {
string const file = MakeDisplayPath(s, 20);
string text = bformat(_("An emergency save of the document %1$s exists.\n"
"\nRecover emergency save?"), file);
int const ret = Alert::prompt(_("Load emergency save?"),
text, 0, 1, _("&Recover"), _("&Load Original"));
if (ret == 0) {
ts = e;
// the file is not saved if we load the
// emergency file.
b->markDirty();
use_emergency = true;
}
}
}
if (!use_emergency) {
// Now check if autosave file is newer.
a += '#';
a += OnlyFilename(s);
a += '#';
FileInfo fileInfoA(a);
if (fileInfoA.exist() && fileInfo.exist()) {
if (fileInfoA.getModificationTime()
> fileInfo.getModificationTime()) {
string const file = MakeDisplayPath(s, 20);
string text = bformat(_("The backup of the document %1$s is newer.\n\n"
"Load the backup instead?"), file);
int const ret = Alert::prompt(_("Load backup?"),
text, 0, 1, _("&Load backup"), _("Load &original"));
if (ret == 0) {
ts = a;
// the file is not saved if we load the
// autosave file.
b->markDirty();
} else {
// Here, we should delete the autosave
unlink(a);
}
}
}
}
return b->readFile(ts);
}
} // namespace anon
bool loadLyXFile(Buffer * b, string const & s)
{
switch (IsFileWriteable(s)) {
case 0:
b->setReadonly(true);
// Fall through
case 1:
if (readFile(b, s)) {
b->lyxvc().file_found_hook(s);
return true;
}
break;
case -1:
string const file = MakeDisplayPath(s, 20);
// Here we probably should run
if (LyXVC::file_not_found_hook(s)) {
string text = bformat(_("Do you want to retrieve the document"
" %1$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 isNamed)
{
// get a free buffer
Buffer * b = bufferlist.newBuffer(filename);
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
b->paragraphs().push_back(Paragraph());
b->paragraphs().begin()->layout(b->params().getLyXTextClass().defaultLayout());
}
} else { // start with empty buffer
b->paragraphs().push_back(Paragraph());
b->paragraphs().begin()->layout(b->params().getLyXTextClass().defaultLayout());
}
if (!isNamed) {
b->setUnnamed();
b->setFileName(filename);
}
b->setReadonly(false);
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)
{
ErrorList::const_iterator it = el.begin();
ErrorList::const_iterator end = el.end();
for (; it != end; ++it)
buf.error(*it);
}
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";
}