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lyx_mirror/src/buffer_funcs.cpp
Jean-Marc Lasgouttes 9b4a26a252 rename assert.h to lassert.h 
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@24559 a592a061-630c-0410-9148-cb99ea01b6c8
2008-04-30 08:26:40 +00:00

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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 "paragraph_funcs.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)
{
// File already open?
Buffer * checkBuffer = theBufferList().getBuffer(filename.absFilename());
if (checkBuffer) {
if (checkBuffer->isClean())
return checkBuffer;
docstring const file = makeDisplayPath(filename.absFilename(), 20);
docstring text = bformat(_(
"The document %1$s is already loaded and has unsaved changes.\n"
"Do you want to abandon your changes and reload the version on disk?"), file);
if (Alert::prompt(_("Reload saved document?"),
text, 0, 1, _("&Reload"), _("&Keep Changes")))
return checkBuffer;
// FIXME: should be LFUN_REVERT
theBufferList().release(checkBuffer);
// Load it again.
return checkAndLoadLyXFile(filename);
}
if (filename.exists()) {
if (!filename.isReadableFile()) {
docstring text = bformat(_("The file %1$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(filename)) {
theBufferList().release(b);
return 0;
}
return b;
}
docstring text = bformat(_("The document %1$s does not yet "
"exist.\n\nDo you want to create a new document?"),
from_utf8(filename.absFilename()));
if (!Alert::prompt(_("Create new document?"),
text, 0, 1, _("&Create"), _("Cancel")))
return newFile(filename.absFilename(), string(), true);
return 0;
}
// FIXME newFile() should probably be a member method of Application...
Buffer * newFile(string const & filename, string const & templatename,
bool const isNamed)
{
// get a free buffer
Buffer * b = theBufferList().newBuffer(filename);
if (!b)
// Buffer creation is not possible.
return 0;
FileName tname;
// use defaults.lyx as a default template if it exists.
if (templatename.empty())
tname = libFileSearch("templates", "defaults.lyx");
else
tname = makeAbsPath(templatename);
if (!tname.empty()) {
if (!b->readFile(tname)) {
docstring const file = makeDisplayPath(tname.absFilename(), 50);
docstring const text = bformat(
_("The specified document template\n%1$s\ncould not be read."),
file);
Alert::error(_("Could not read template"), text);
theBufferList().release(b);
return 0;
}
}
if (!isNamed) {
b->setUnnamed();
b->setFileName(filename);
}
b->setReadonly(false);
b->setFullyLoaded(true);
return b;
}
Buffer * newUnnamedFile(string const & templatename, FileName const & path)
{
static int newfile_number;
string document_path = path.absFilename();
string filename = addName(document_path,
"newfile" + convert<string>(++newfile_number) + ".lyx");
while (theBufferList().exists(filename)
|| FileName(filename).isReadableFile()) {
++newfile_number;
filename = addName(document_path,
"newfile" + convert<string>(newfile_number) + ".lyx");
}
return newFile(filename, templatename, false);
}
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())
&& !dit.paragraph().isDeleted(dit.pos())) {
if (!inword) {
++count;
inword = true;
}
} else if (inword)
inword = false;
}
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 ; dit.forwardPos()) {
if (!dit.inTexted()) 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->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;
}
}
}
return chars + blanks;
}
namespace {
depth_type getDepth(DocIterator const & it)
{
depth_type depth = 0;
for (size_t i = 0 ; i < it.depth() ; ++i)
if (!it[i].inset().inMathed())
depth += it[i].paragraph().getDepth() + 1;
// remove 1 since the outer inset does not count
return depth - 1;
}
depth_type getItemDepth(ParIterator const & it)
{
Paragraph const & par = *it;
LabelType const labeltype = par.layout().labeltype;
if (labeltype != LABEL_ENUMERATE && labeltype != LABEL_ITEMIZE)
return 0;
// this will hold the lowest depth encountered up to now.
depth_type min_depth = getDepth(it);
ParIterator prev_it = it;
while (true) {
if (prev_it.pit())
--prev_it.top().pit();
else {
// start of nested inset: go to outer par
prev_it.pop_back();
if (prev_it.empty()) {
// start of document: nothing to do
return 0;
}
}
// We search for the first paragraph with same label
// that is not more deeply nested.
Paragraph & prev_par = *prev_it;
depth_type const prev_depth = getDepth(prev_it);
if (labeltype == prev_par.layout().labeltype) {
if (prev_depth < min_depth)
return prev_par.itemdepth + 1;
if (prev_depth == min_depth)
return prev_par.itemdepth;
}
min_depth = min(min_depth, prev_depth);
// small optimization: if we are at depth 0, we won't
// find anything else
if (prev_depth == 0)
return 0;
}
}
bool needEnumCounterReset(ParIterator const & it)
{
Paragraph const & par = *it;
LASSERT(par.layout().labeltype == LABEL_ENUMERATE, /**/);
depth_type const cur_depth = par.getDepth();
ParIterator prev_it = it;
while (prev_it.pit()) {
--prev_it.top().pit();
Paragraph const & prev_par = *prev_it;
if (prev_par.getDepth() <= cur_depth)
return prev_par.layout().labeltype != LABEL_ENUMERATE;
}
// start of nested inset: reset
return true;
}
// set the label of a paragraph. This includes the counters.
void setLabel(Buffer const & buf, ParIterator & it)
{
DocumentClass const & textclass = buf.params().documentClass();
Paragraph & par = it.paragraph();
Layout const & layout = par.layout();
Counters & counters = textclass.counters();
if (par.params().startOfAppendix()) {
// FIXME: only the counter corresponding to toplevel
// sectionning should be reset
counters.reset();
counters.appendix(true);
}
par.params().appendix(counters.appendix());
// Compute the item depth of the paragraph
par.itemdepth = getItemDepth(it);
if (layout.margintype == MARGIN_MANUAL) {
if (par.params().labelWidthString().empty())
par.params().labelWidthString(par.translateIfPossible(layout.labelstring(), buf.params()));
} else {
par.params().labelWidthString(docstring());
}
switch(layout.labeltype) {
case LABEL_COUNTER:
if (layout.toclevel <= buf.params().secnumdepth
&& (layout.latextype != LATEX_ENVIRONMENT
|| isFirstInSequence(it.pit(), it.plist()))) {
counters.step(layout.counter);
par.params().labelString(
par.expandLabel(layout, buf.params()));
} else
par.params().labelString(docstring());
break;
case LABEL_ITEMIZE: {
// At some point of time we should do something more
// clever here, like:
// par.params().labelString(
// buf.params().user_defined_bullet(par.itemdepth).getText());
// for now, use a simple hardcoded label
docstring itemlabel;
switch (par.itemdepth) {
case 0:
itemlabel = char_type(0x2022);
break;
case 1:
itemlabel = char_type(0x2013);
break;
case 2:
itemlabel = char_type(0x2217);
break;
case 3:
itemlabel = char_type(0x2219); // or 0x00b7
break;
}
par.params().labelString(itemlabel);
break;
}
case LABEL_ENUMERATE: {
// FIXME: Yes I know this is a really, really! bad solution
// (Lgb)
docstring enumcounter = from_ascii("enum");
switch (par.itemdepth) {
case 2:
enumcounter += 'i';
case 1:
enumcounter += 'i';
case 0:
enumcounter += 'i';
break;
case 3:
enumcounter += "iv";
break;
default:
// not a valid enumdepth...
break;
}
// Maybe we have to reset the enumeration counter.
if (needEnumCounterReset(it))
counters.reset(enumcounter);
counters.step(enumcounter);
string format;
switch (par.itemdepth) {
case 0:
format = N_("\\arabic{enumi}.");
break;
case 1:
format = N_("(\\alph{enumii})");
break;
case 2:
format = N_("\\roman{enumiii}.");
break;
case 3:
format = N_("\\Alph{enumiv}.");
break;
default:
// not a valid enumdepth...
break;
}
par.params().labelString(counters.counterLabel(
par.translateIfPossible(from_ascii(format), buf.params())));
break;
}
case LABEL_SENSITIVE: {
string const & type = counters.current_float();
docstring full_label;
if (type.empty())
full_label = buf.B_("Senseless!!! ");
else {
docstring name = buf.B_(textclass.floats().getType(type).name());
if (counters.hasCounter(from_utf8(type))) {
counters.step(from_utf8(type));
full_label = bformat(from_ascii("%1$s %2$s:"),
name,
counters.theCounter(from_utf8(type)));
} else
full_label = bformat(from_ascii("%1$s #:"), name);
}
par.params().labelString(full_label);
break;
}
case LABEL_NO_LABEL:
par.params().labelString(docstring());
break;
case LABEL_MANUAL:
case LABEL_TOP_ENVIRONMENT:
case LABEL_CENTERED_TOP_ENVIRONMENT:
case LABEL_STATIC:
case LABEL_BIBLIO:
par.params().labelString(
par.translateIfPossible(layout.labelstring(),
buf.params()));
break;
}
}
} // anon namespace
void updateLabels(Buffer const & buf, ParIterator & parit)
{
LASSERT(parit.pit() == 0, /**/);
// set the position of the text in the buffer to be able
// to resolve macros in it. This has nothing to do with
// labels, but by putting it here we avoid implementing
// a whole bunch of traversal routines just for this call.
parit.text()->setMacrocontextPosition(parit);
depth_type maxdepth = 0;
pit_type const lastpit = parit.lastpit();
for ( ; parit.pit() <= lastpit ; ++parit.pit()) {
// reduce depth if necessary
parit->params().depth(min(parit->params().depth(), maxdepth));
maxdepth = parit->getMaxDepthAfter();
// set the counter for this paragraph
setLabel(buf, parit);
// Now the insets
InsetList::const_iterator iit = parit->insetList().begin();
InsetList::const_iterator end = parit->insetList().end();
for (; iit != end; ++iit) {
parit.pos() = iit->pos;
iit->inset->updateLabels(parit);
}
}
}
// FIXME: buf should should be const because updateLabels() modifies
// the contents of the paragraphs.
void updateLabels(Buffer const & buf, bool childonly)
{
Buffer const * const master = buf.masterBuffer();
// Use the master text class also for child documents
DocumentClass const & textclass = master->params().documentClass();
if (!childonly) {
// If this is a child document start with the master
if (master != &buf) {
updateLabels(*master);
return;
}
// start over the counters
textclass.counters().reset();
buf.clearReferenceCache();
buf.updateMacros();
}
Buffer & cbuf = const_cast<Buffer &>(buf);
if (buf.text().empty()) {
// FIXME: we don't call continue with updateLabels()
// here because it crashes on newly created documents.
// But the TocBackend needs to be initialised
// nonetheless so we update the tocBackend manually.
cbuf.tocBackend().update();
return;
}
// do the real work
ParIterator parit = par_iterator_begin(buf.inset());
updateLabels(buf, parit);
cbuf.tocBackend().update();
if (!childonly)
cbuf.structureChanged();
}
} // namespace lyx
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