lyx_mirror/src/buffer_funcs.cpp

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/**
* \file buffer_funcs.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
* \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 "Counters.h"
#include "ErrorList.h"
#include "Floating.h"
#include "FloatList.h"
#include "InsetList.h"
#include "Language.h"
#include "LaTeX.h"
#include "Layout.h"
#include "LyX.h"
#include "TextClass.h"
#include "Paragraph.h"
#include "ParagraphList.h"
#include "ParagraphParameters.h"
#include "ParIterator.h"
#include "TexRow.h"
#include "Text.h"
#include "TocBackend.h"
#include "frontends/alert.h"
#include "insets/InsetBibitem.h"
#include "insets/InsetInclude.h"
#include "support/lassert.h"
#include "support/convert.h"
#include "support/debug.h"
#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/textutils.h"
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace Alert = frontend::Alert;
Buffer * checkAndLoadLyXFile(FileName const & filename, bool const acceptDirty)
{
// File already open?
Buffer * checkBuffer = theBufferList().getBuffer(filename);
if (checkBuffer) {
// Sometimes (when setting the master buffer from a child)
// we accept a dirty buffer right away (otherwise we'd get
// an infinite loop (bug 5514).
// We also accept a dirty buffer when the document has not
// yet been saved to disk.
if (checkBuffer->isClean() || acceptDirty || !filename.exists())
return checkBuffer;
docstring const file = makeDisplayPath(filename.absFileName(), 20);
docstring const text = bformat(_(
"The document %1$s is already loaded and has unsaved changes.\n"
"Do you want to abandon your changes and reload the version on disk?"), file);
if (!Alert::prompt(_("Reload saved document?"),
text, 0, 1, _("&Reload"), _("&Keep Changes"))) {
// reload the document
if (checkBuffer->reload() != Buffer::ReadSuccess)
return 0;
}
return checkBuffer;
}
if (filename.exists()) {
if (!filename.isReadableFile()) {
docstring text = bformat(_("The file %1$s exists but is not "
"readable by the current user."),
from_utf8(filename.absFileName()));
Alert::error(_("File not readable!"), text);
return 0;
}
Buffer * b = theBufferList().newBuffer(filename.absFileName());
if (!b) {
// Buffer creation is not possible.
return 0;
}
if (b->loadLyXFile() != Buffer::ReadSuccess) {
// do not save an emergency file when releasing the buffer
b->markClean();
theBufferList().release(b);
return 0;
}
return b;
}
docstring text = bformat(_("The document %1$s does not yet "
"exist.\n\nDo you want to create a new document?"),
from_utf8(filename.absFileName()));
if (!Alert::prompt(_("Create new document?"),
text, 0, 1, _("&Create"), _("Cancel")))
return newFile(filename.absFileName(), string(), true);
return 0;
}
// FIXME newFile() should probably be a member method of Application...
Buffer * newFile(string const & filename, string const & templatename,
bool is_named)
{
// get a free buffer
Buffer * b = theBufferList().newBuffer(filename);
if (!b)
// Buffer creation is not possible.
return 0;
FileName tname;
// use defaults.lyx as a default template if it exists.
if (templatename.empty())
tname = libFileSearch("templates", "defaults.lyx");
else
tname = makeAbsPath(templatename);
if (!tname.empty()) {
if (b->loadThisLyXFile(tname) != Buffer::ReadSuccess) {
docstring const file = makeDisplayPath(tname.absFileName(), 50);
docstring const text = bformat(
_("The specified document template\n%1$s\ncould not be read."),
file);
Alert::error(_("Could not read template"), text);
theBufferList().release(b);
return 0;
}
}
if (is_named)
// in this case, the user chose the filename, so we
// assume that she really does want this file.
b->markDirty();
else
b->setUnnamed();
b->setReadonly(false);
b->setFullyLoaded(true);
return b;
}
Buffer * newUnnamedFile(FileName const & path, string const & prefix,
string const & templatename)
{
static map<string, int> file_number;
FileName filename;
do {
filename.set(path,
prefix + convert<string>(++file_number[prefix]) + ".lyx");
}
while (theBufferList().exists(filename) || filename.isReadableFile());
return newFile(filename.absFileName(), templatename, false);
}
/*
* FIXME : merge with countChars. The structures of the two functions
* are similar but, unfortunately, they seem to have a different
* notion of what to count. Since nobody ever complained about that,
* this proves (again) that any number beats no number ! (JMarc)
*/
int countWords(DocIterator const & from, DocIterator const & to)
{
int count = 0;
bool inword = false;
for (DocIterator dit = from ; dit != to ; ) {
if (!dit.inTexted()) {
dit.forwardPos();
continue;
}
Paragraph const & par = dit.paragraph();
pos_type const pos = dit.pos();
// Copied and adapted from isWordSeparator() in Paragraph
if (pos != dit.lastpos() && !par.isDeleted(pos)) {
Inset const * ins = par.getInset(pos);
if (ins && !ins->producesOutput()) {
//skip this inset
++dit.top().pos();
continue;
}
if (par.isWordSeparator(pos))
inword = false;
else if (!inword) {
++count;
inword = true;
}
}
dit.forwardPos();
}
return count;
}
int countChars(DocIterator const & from, DocIterator const & to,
bool with_blanks)
{
int chars = 0;
int blanks = 0;
for (DocIterator dit = from ; dit != to ; ) {
if (!dit.inTexted()) {
dit.forwardPos();
continue;
}
Paragraph const & par = dit.paragraph();
pos_type const pos = dit.pos();
if (pos != dit.lastpos() && !par.isDeleted(pos)) {
if (Inset const * ins = par.getInset(pos)) {
if (!ins->producesOutput()) {
//skip this inset
++dit.top().pos();
continue;
}
if (ins->isLetter())
++chars;
else if (with_blanks && ins->isSpace())
++blanks;
} else {
char_type const c = par.getChar(pos);
if (isPrintableNonspace(c))
++chars;
else if (isSpace(c) && with_blanks)
++blanks;
}
}
dit.forwardPos();
}
return chars + blanks;
}
Buffer * loadIfNeeded(FileName const & fname)
{
Buffer * buffer = theBufferList().getBuffer(fname);
if (!buffer) {
if (!fname.exists())
return 0;
buffer = theBufferList().newBuffer(fname.absFileName());
if (!buffer)
// Buffer creation is not possible.
return 0;
if (buffer->loadLyXFile() != Buffer::ReadSuccess) {
//close the buffer we just opened
theBufferList().release(buffer);
return 0;
}
}
return buffer;
}
} // namespace lyx