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lyx_mirror/src/Paragraph.cpp
Enrico Forestieri d0ce9e3984 Style 
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@27619 a592a061-630c-0410-9148-cb99ea01b6c8
2008-11-18 12:04:40 +00:00

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/**
* \file Paragraph.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Asger Alstrup
* \author Lars Gullik Bjønnes
* \author Jean-Marc Lasgouttes
* \author Angus Leeming
* \author John Levon
* \author André Pönitz
* \author Dekel Tsur
* \author Jürgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "Paragraph.h"
#include "LayoutFile.h"
#include "Buffer.h"
#include "BufferParams.h"
#include "Changes.h"
#include "Counters.h"
#include "Encoding.h"
#include "InsetList.h"
#include "Language.h"
#include "LaTeXFeatures.h"
#include "Layout.h"
#include "Length.h"
#include "Font.h"
#include "FontList.h"
#include "LyXRC.h"
#include "OutputParams.h"
#include "output_latex.h"
#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
#include "sgml.h"
#include "TextClass.h"
#include "TexRow.h"
#include "Text.h"
#include "VSpace.h"
#include "WordList.h"
#include "frontends/alert.h"
#include "insets/InsetBibitem.h"
#include "insets/InsetLabel.h"
#include "support/lassert.h"
#include "support/convert.h"
#include "support/debug.h"
#include "support/ExceptionMessage.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/Messages.h"
#include "support/textutils.h"
#include <sstream>
#include <vector>
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace {
/// Inset identifier (above 0x10ffff, for ucs-4)
char_type const META_INSET = 0x200001;
};
/////////////////////////////////////////////////////////////////////
//
// Paragraph::Private
//
/////////////////////////////////////////////////////////////////////
class Paragraph::Private
{
public:
///
Private(Paragraph * owner, Layout const & layout);
/// "Copy constructor"
Private(Private const &, Paragraph * owner);
/// Copy constructor from \p beg to \p end
Private(Private const &, Paragraph * owner, pos_type beg, pos_type end);
///
void insertChar(pos_type pos, char_type c, Change const & change);
/// Output the surrogate pair formed by \p c and \p next to \p os.
/// \return the number of characters written.
int latexSurrogatePair(odocstream & os, char_type c, char_type next,
Encoding const &);
/// Output a space in appropriate formatting (or a surrogate pair
/// if the next character is a combining character).
/// \return whether a surrogate pair was output.
bool simpleTeXBlanks(OutputParams const &,
odocstream &, TexRow & texrow,
pos_type i,
unsigned int & column,
Font const & font,
Layout const & style);
/// Output consecutive unicode chars, belonging to the same script as
/// specified by the latex macro \p ltx, to \p os starting from \p i.
/// \return the number of characters written.
int writeScriptChars(odocstream & os, docstring const & ltx,
Change const &, Encoding const &, pos_type & i);
/// This could go to ParagraphParameters if we want to.
int startTeXParParams(BufferParams const &, odocstream &, TexRow &,
OutputParams const &) const;
/// This could go to ParagraphParameters if we want to.
int endTeXParParams(BufferParams const &, odocstream &, TexRow &,
OutputParams const &) const;
///
void latexInset(BufferParams const &,
odocstream &,
TexRow & texrow, OutputParams &,
Font & running_font,
Font & basefont,
Font const & outerfont,
bool & open_font,
Change & running_change,
Layout const & style,
pos_type & i,
unsigned int & column);
///
void latexSpecialChar(
odocstream & os,
OutputParams const & runparams,
Font const & running_font,
Change const & running_change,
Layout const & style,
pos_type & i,
unsigned int & column);
///
bool latexSpecialT1(
char_type const c,
odocstream & os,
pos_type i,
unsigned int & column);
///
bool latexSpecialTypewriter(
char_type const c,
odocstream & os,
pos_type i,
unsigned int & column);
///
bool latexSpecialPhrase(
odocstream & os,
pos_type & i,
unsigned int & column,
OutputParams const & runparams);
///
void validate(LaTeXFeatures & features,
Layout const & layout) const;
/// Checks if the paragraph contains only text and no inset or font change.
bool onlyText(Buffer const & buf, Font const & outerfont,
pos_type initial) const;
/// match a string against a particular point in the paragraph
bool isTextAt(string const & str, pos_type pos) const;
/// Which Paragraph owns us?
Paragraph * owner_;
/// In which Inset?
Inset const * inset_owner_;
///
FontList fontlist_;
///
unsigned int id_;
///
static unsigned int paragraph_id;
///
ParagraphParameters params_;
/// for recording and looking up changes
Changes changes_;
///
InsetList insetlist_;
/// end of label
pos_type begin_of_body_;
typedef docstring TextContainer;
///
TextContainer text_;
typedef std::set<docstring> Words;
///
Words words_;
///
Layout const * layout_;
};
// Initialization of the counter for the paragraph id's,
unsigned int Paragraph::Private::paragraph_id = 0;
namespace {
struct special_phrase {
string phrase;
docstring macro;
bool builtin;
};
special_phrase const special_phrases[] = {
{ "LyX", from_ascii("\\LyX{}"), false },
{ "TeX", from_ascii("\\TeX{}"), true },
{ "LaTeX2e", from_ascii("\\LaTeXe{}"), true },
{ "LaTeX", from_ascii("\\LaTeX{}"), true },
};
size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
} // namespace anon
Paragraph::Private::Private(Paragraph * owner, Layout const & layout)
: owner_(owner), inset_owner_(0), begin_of_body_(0), layout_(&layout)
{
id_ = paragraph_id++;
text_.reserve(100);
}
Paragraph::Private::Private(Private const & p, Paragraph * owner)
: owner_(owner), inset_owner_(p.inset_owner_), fontlist_(p.fontlist_),
params_(p.params_), changes_(p.changes_), insetlist_(p.insetlist_),
begin_of_body_(p.begin_of_body_), text_(p.text_), words_(p.words_),
layout_(p.layout_)
{
id_ = paragraph_id++;
}
Paragraph::Private::Private(Private const & p, Paragraph * owner,
pos_type beg, pos_type end)
: owner_(owner), inset_owner_(p.inset_owner_),
params_(p.params_), changes_(p.changes_),
insetlist_(p.insetlist_, beg, end),
begin_of_body_(p.begin_of_body_), words_(p.words_),
layout_(p.layout_)
{
id_ = paragraph_id++;
if (beg >= pos_type(p.text_.size()))
return;
text_ = p.text_.substr(beg, end - beg);
FontList::const_iterator fcit = fontlist_.begin();
FontList::const_iterator fend = fontlist_.end();
for (; fcit != fend; ++fcit) {
if (fcit->pos() < beg)
continue;
if (fcit->pos() >= end) {
// Add last entry in the fontlist_.
fontlist_.set(text_.size() - 1, fcit->font());
break;
}
// Add a new entry in the fontlist_.
fontlist_.set(fcit->pos() - beg, fcit->font());
}
}
void Paragraph::addChangesToToc(DocIterator const & cdit,
Buffer const & buf) const
{
d->changes_.addToToc(cdit, buf);
}
bool Paragraph::isChanged(pos_type start, pos_type end) const
{
LASSERT(start >= 0 && start <= size(), /**/);
LASSERT(end > start && end <= size() + 1, /**/);
return d->changes_.isChanged(start, end);
}
bool Paragraph::isMergedOnEndOfParDeletion(bool trackChanges) const
{
// keep the logic here in sync with the logic of eraseChars()
if (!trackChanges)
return true;
Change const change = d->changes_.lookup(size());
return change.type == Change::INSERTED && change.author == 0;
}
void Paragraph::setChange(Change const & change)
{
// beware of the imaginary end-of-par character!
d->changes_.set(change, 0, size() + 1);
/*
* Propagate the change recursively - but not in case of DELETED!
*
* Imagine that your co-author makes changes in an existing inset. He
* sends your document to you and you come to the conclusion that the
* inset should go completely. If you erase it, LyX must not delete all
* text within the inset. Otherwise, the change tracked insertions of
* your co-author get lost and there is no way to restore them later.
*
* Conclusion: An inset's content should remain untouched if you delete it
*/
if (change.type != Change::DELETED) {
for (pos_type pos = 0; pos < size(); ++pos) {
if (Inset * inset = getInset(pos))
inset->setChange(change);
}
}
}
void Paragraph::setChange(pos_type pos, Change const & change)
{
LASSERT(pos >= 0 && pos <= size(), /**/);
d->changes_.set(change, pos);
// see comment in setChange(Change const &) above
if (change.type != Change::DELETED && pos < size())
if (Inset * inset = getInset(pos))
inset->setChange(change);
}
Change const & Paragraph::lookupChange(pos_type pos) const
{
LASSERT(pos >= 0 && pos <= size(), /**/);
return d->changes_.lookup(pos);
}
void Paragraph::acceptChanges(BufferParams const & bparams, pos_type start,
pos_type end)
{
LASSERT(start >= 0 && start <= size(), /**/);
LASSERT(end > start && end <= size() + 1, /**/);
for (pos_type pos = start; pos < end; ++pos) {
switch (lookupChange(pos).type) {
case Change::UNCHANGED:
// accept changes in nested inset
if (Inset * inset = getInset(pos))
inset->acceptChanges(bparams);
break;
case Change::INSERTED:
d->changes_.set(Change(Change::UNCHANGED), pos);
// also accept changes in nested inset
if (Inset * inset = getInset(pos))
inset->acceptChanges(bparams);
break;
case Change::DELETED:
// Suppress access to non-existent
// "end-of-paragraph char"
if (pos < size()) {
eraseChar(pos, false);
--end;
--pos;
}
break;
}
}
}
void Paragraph::rejectChanges(BufferParams const & bparams,
pos_type start, pos_type end)
{
LASSERT(start >= 0 && start <= size(), /**/);
LASSERT(end > start && end <= size() + 1, /**/);
for (pos_type pos = start; pos < end; ++pos) {
switch (lookupChange(pos).type) {
case Change::UNCHANGED:
// reject changes in nested inset
if (Inset * inset = getInset(pos))
inset->rejectChanges(bparams);
break;
case Change::INSERTED:
// Suppress access to non-existent
// "end-of-paragraph char"
if (pos < size()) {
eraseChar(pos, false);
--end;
--pos;
}
break;
case Change::DELETED:
d->changes_.set(Change(Change::UNCHANGED), pos);
// Do NOT reject changes within a deleted inset!
// There may be insertions of a co-author inside of it!
break;
}
}
}
void Paragraph::Private::insertChar(pos_type pos, char_type c,
Change const & change)
{
LASSERT(pos >= 0 && pos <= int(text_.size()), /**/);
// track change
changes_.insert(change, pos);
// This is actually very common when parsing buffers (and
// maybe inserting ascii text)
if (pos == pos_type(text_.size())) {
// when appending characters, no need to update tables
text_.push_back(c);
return;
}
text_.insert(text_.begin() + pos, c);
// Update the font table.
fontlist_.increasePosAfterPos(pos);
// Update the insets
insetlist_.increasePosAfterPos(pos);
}
bool Paragraph::insertInset(pos_type pos, Inset * inset,
Change const & change)
{
LASSERT(inset, /**/);
LASSERT(pos >= 0 && pos <= size(), /**/);
// Paragraph::insertInset() can be used in cut/copy/paste operation where
// d->inset_owner_ is not set yet.
if (d->inset_owner_ && !d->inset_owner_->insetAllowed(inset->lyxCode()))
return false;
d->insertChar(pos, META_INSET, change);
LASSERT(d->text_[pos] == META_INSET, /**/);
// Add a new entry in the insetlist_.
d->insetlist_.insert(inset, pos);
return true;
}
bool Paragraph::eraseChar(pos_type pos, bool trackChanges)
{
LASSERT(pos >= 0 && pos <= size(), return false);
// keep the logic here in sync with the logic of isMergedOnEndOfParDeletion()
if (trackChanges) {
Change change = d->changes_.lookup(pos);
// set the character to DELETED if
// a) it was previously unchanged or
// b) it was inserted by a co-author
if (change.type == Change::UNCHANGED ||
(change.type == Change::INSERTED && change.author != 0)) {
setChange(pos, Change(Change::DELETED));
return false;
}
if (change.type == Change::DELETED)
return false;
}
// Don't physically access the imaginary end-of-paragraph character.
// eraseChar() can only mark it as DELETED. A physical deletion of
// end-of-par must be handled externally.
if (pos == size()) {
return false;
}
// track change
d->changes_.erase(pos);
// if it is an inset, delete the inset entry
if (d->text_[pos] == META_INSET)
d->insetlist_.erase(pos);
d->text_.erase(d->text_.begin() + pos);
// Update the fontlist_
d->fontlist_.erase(pos);
// Update the insetlist_
d->insetlist_.decreasePosAfterPos(pos);
return true;
}
int Paragraph::eraseChars(pos_type start, pos_type end, bool trackChanges)
{
LASSERT(start >= 0 && start <= size(), /**/);
LASSERT(end >= start && end <= size() + 1, /**/);
pos_type i = start;
for (pos_type count = end - start; count; --count) {
if (!eraseChar(i, trackChanges))
++i;
}
return end - i;
}
int Paragraph::Private::latexSurrogatePair(odocstream & os, char_type c,
char_type next, Encoding const & encoding)
{
// Writing next here may circumvent a possible font change between
// c and next. Since next is only output if it forms a surrogate pair
// with c we can ignore this:
// A font change inside a surrogate pair does not make sense and is
// hopefully impossible to input.
// FIXME: change tracking
// Is this correct WRT change tracking?
docstring const latex1 = encoding.latexChar(next);
docstring const latex2 = encoding.latexChar(c);
if (docstring(1, next) == latex1) {
// the encoding supports the combination
os << latex2 << latex1;
return latex1.length() + latex2.length();
} else
os << latex1 << '{' << latex2 << '}';
return latex1.length() + latex2.length() + 2;
}
bool Paragraph::Private::simpleTeXBlanks(OutputParams const & runparams,
odocstream & os, TexRow & texrow,
pos_type i,
unsigned int & column,
Font const & font,
Layout const & style)
{
if (style.pass_thru || runparams.verbatim)
return false;
if (i + 1 < int(text_.size())) {
char_type next = text_[i + 1];
if (Encodings::isCombiningChar(next)) {
Encoding const & encoding = *(runparams.encoding);
// This space has an accent, so we must always output it.
column += latexSurrogatePair(os, ' ', next, encoding) - 1;
return true;
}
}
if (lyxrc.plaintext_linelen > 0
&& column > lyxrc.plaintext_linelen
&& i
&& text_[i - 1] != ' '
&& (i + 1 < int(text_.size()))
// same in FreeSpacing mode
&& !owner_->isFreeSpacing()
// In typewriter mode, we want to avoid
// ! . ? : at the end of a line
&& !(font.fontInfo().family() == TYPEWRITER_FAMILY
&& (text_[i - 1] == '.'
|| text_[i - 1] == '?'
|| text_[i - 1] == ':'
|| text_[i - 1] == '!'))) {
os << '\n';
texrow.newline();
texrow.start(owner_->id(), i + 1);
column = 0;
} else if (style.free_spacing) {
os << '~';
} else {
os << ' ';
}
return false;
}
int Paragraph::Private::writeScriptChars(odocstream & os,
docstring const & ltx,
Change const & runningChange,
Encoding const & encoding,
pos_type & i)
{
// FIXME: modifying i here is not very nice...
// We only arrive here when a proper language for character text_[i] has
// not been specified (i.e., it could not be translated in the current
// latex encoding) or its latex translation has been forced, and it
// belongs to a known script.
// Parameter ltx contains the latex translation of text_[i] as specified
// in the unicodesymbols file and is something like "\textXXX{<spec>}".
// The latex macro name "textXXX" specifies the script to which text_[i]
// belongs and we use it in order to check whether characters from the
// same script immediately follow, such that we can collect them in a
// single "\textXXX" macro. So, we have to retain "\textXXX{<spec>"
// for the first char but only "<spec>" for all subsequent chars.
docstring::size_type const brace1 = ltx.find_first_of(from_ascii("{"));
docstring::size_type const brace2 = ltx.find_last_of(from_ascii("}"));
string script = to_ascii(ltx.substr(1, brace1 - 1));
int pos = 0;
int length = brace2;
bool closing_brace = true;
if (script == "textgreek" && encoding.latexName() == "iso-8859-7") {
// Correct encoding is being used, so we can avoid \textgreek.
pos = brace1 + 1;
length -= pos;
closing_brace = false;
}
os << ltx.substr(pos, length);
int size = text_.size();
while (i + 1 < size) {
char_type const next = text_[i + 1];
// Stop here if next character belongs to another script
// or there is a change in change tracking status.
if (!Encodings::isKnownScriptChar(next, script) ||
runningChange != owner_->lookupChange(i + 1))
break;
Font prev_font;
bool found = false;
FontList::const_iterator cit = fontlist_.begin();
FontList::const_iterator end = fontlist_.end();
for (; cit != end; ++cit) {
if (cit->pos() >= i && !found) {
prev_font = cit->font();
found = true;
}
if (cit->pos() >= i + 1)
break;
}
// Stop here if there is a font attribute or encoding change.
if (found && cit != end && prev_font != cit->font())
break;
docstring const latex = encoding.latexChar(next);
docstring::size_type const b1 =
latex.find_first_of(from_ascii("{"));
docstring::size_type const b2 =
latex.find_last_of(from_ascii("}"));
int const len = b2 - b1 - 1;
os << latex.substr(b1 + 1, len);
length += len;
++i;
}
if (closing_brace) {
os << '}';
++length;
}
return length;
}
bool Paragraph::Private::isTextAt(string const & str, pos_type pos) const
{
pos_type const len = str.length();
// is the paragraph large enough?
if (pos + len > int(text_.size()))
return false;
// does the wanted text start at point?
for (string::size_type i = 0; i < str.length(); ++i) {
// Caution: direct comparison of characters works only
// because str is pure ASCII.
if (str[i] != text_[pos + i])
return false;
}
return fontlist_.hasChangeInRange(pos, len);
}
void Paragraph::Private::latexInset(
BufferParams const & bparams,
odocstream & os,
TexRow & texrow,
OutputParams & runparams,
Font & running_font,
Font & basefont,
Font const & outerfont,
bool & open_font,
Change & running_change,
Layout const & style,
pos_type & i,
unsigned int & column)
{
Inset * inset = owner_->getInset(i);
LASSERT(inset, /**/);
if (style.pass_thru) {
inset->plaintext(os, runparams);
return;
}
// FIXME: move this to InsetNewline::latex
if (inset->lyxCode() == NEWLINE_CODE) {
// newlines are handled differently here than
// the default in simpleTeXSpecialChars().
if (!style.newline_allowed) {
os << '\n';
} else {
if (open_font) {
column += running_font.latexWriteEndChanges(
os, bparams, runparams,
basefont, basefont);
open_font = false;
}
if (running_font.fontInfo().family() == TYPEWRITER_FAMILY)
os << '~';
basefont = owner_->getLayoutFont(bparams, outerfont);
running_font = basefont;
if (runparams.moving_arg)
os << "\\protect ";
}
texrow.newline();
texrow.start(owner_->id(), i + 1);
column = 0;
}
if (owner_->lookupChange(i).type == Change::DELETED) {
if( ++runparams.inDeletedInset == 1)
runparams.changeOfDeletedInset = owner_->lookupChange(i);
}
if (inset->canTrackChanges()) {
column += Changes::latexMarkChange(os, bparams, running_change,
Change(Change::UNCHANGED));
running_change = Change(Change::UNCHANGED);
}
bool close = false;
odocstream::pos_type const len = os.tellp();
if (inset->forceLTR()
&& running_font.isRightToLeft()
// ERT is an exception, it should be output with no decorations at all
&& inset->lyxCode() != ERT_CODE) {
if (running_font.language()->lang() == "farsi")
os << "\\beginL{}";
else
os << "\\L{";
close = true;
}
// FIXME: Bug: we can have an empty font change here!
// if there has just been a font change, we are going to close it
// right now, which means stupid latex code like \textsf{}. AFAIK,
// this does not harm dvi output. A minor bug, thus (JMarc)
// Some insets cannot be inside a font change command.
// However, even such insets *can* be placed in \L or \R
// or their equivalents (for RTL language switches), so we don't
// close the language in those cases.
// ArabTeX, though, cannot handle this special behavior, it seems.
bool arabtex = basefont.language()->lang() == "arabic_arabtex"
|| running_font.language()->lang() == "arabic_arabtex";
if (open_font && inset->noFontChange()) {
bool closeLanguage = arabtex
|| basefont.isRightToLeft() == running_font.isRightToLeft();
unsigned int count = running_font.latexWriteEndChanges(os,
bparams, runparams, basefont, basefont, closeLanguage);
column += count;
// if any font properties were closed, update the running_font,
// making sure, however, to leave the language as it was
if (count > 0) {
// FIXME: probably a better way to keep track of the old
// language, than copying the entire font?
Font const copy_font(running_font);
basefont = owner_->getLayoutFont(bparams, outerfont);
running_font = basefont;
if (!closeLanguage)
running_font.setLanguage(copy_font.language());
// leave font open if language is still open
open_font = (running_font.language() == basefont.language());
if (closeLanguage)
runparams.local_font = &basefont;
}
}
int tmp;
try {
tmp = inset->latex(os, runparams);
} catch (EncodingException & e) {
// add location information and throw again.
e.par_id = id_;
e.pos = i;
throw(e);
}
if (close) {
if (running_font.language()->lang() == "farsi")
os << "\\endL{}";
else
os << '}';
}
if (tmp) {
for (int j = 0; j < tmp; ++j)
texrow.newline();
texrow.start(owner_->id(), i + 1);
column = 0;
} else {
column += os.tellp() - len;
}
if (owner_->lookupChange(i).type == Change::DELETED)
--runparams.inDeletedInset;
}
void Paragraph::Private::latexSpecialChar(
odocstream & os,
OutputParams const & runparams,
Font const & running_font,
Change const & running_change,
Layout const & style,
pos_type & i,
unsigned int & column)
{
char_type const c = text_[i];
if (style.pass_thru) {
if (c != '\0')
// FIXME UNICODE: This can fail if c cannot
// be encoded in the current encoding.
os.put(c);
return;
}
if (runparams.verbatim) {
// FIXME UNICODE: This can fail if c cannot
// be encoded in the current encoding.
os.put(c);
return;
}
if (lyxrc.fontenc == "T1" && latexSpecialT1(c, os, i, column))
return;
if (running_font.fontInfo().family() == TYPEWRITER_FAMILY
&& latexSpecialTypewriter(c, os, i, column))
return;
// Otherwise, we use what LaTeX provides us.
switch (c) {
case '\\':
os << "\\textbackslash{}";
column += 15;
break;
case '<':
os << "\\textless{}";
column += 10;
break;
case '>':
os << "\\textgreater{}";
column += 13;
break;
case '|':
os << "\\textbar{}";
column += 9;
break;
case '-':
os << '-';
break;
case '\"':
os << "\\char`\\\"{}";
column += 9;
break;
case '$': case '&':
case '%': case '#': case '{':
case '}': case '_':
os << '\\';
os.put(c);
column += 1;
break;
case '~':
os << "\\textasciitilde{}";
column += 16;
break;
case '^':
os << "\\textasciicircum{}";
column += 17;
break;
case '*': case '[':
// avoid being mistaken for optional arguments
os << '{';
os.put(c);
os << '}';
column += 2;
break;
case ' ':
// Blanks are printed before font switching.
// Sure? I am not! (try nice-latex)
// I am sure it's correct. LyX might be smarter
// in the future, but for now, nothing wrong is
// written. (Asger)
break;
default:
// LyX, LaTeX etc.
if (latexSpecialPhrase(os, i, column, runparams))
return;
if (c == '\0')
return;
Encoding const & encoding = *(runparams.encoding);
if (i + 1 < int(text_.size())) {
char_type next = text_[i + 1];
if (Encodings::isCombiningChar(next)) {
column += latexSurrogatePair(os, c, next, encoding) - 1;
++i;
break;
}
}
string script;
docstring const latex = encoding.latexChar(c);
if (Encodings::isKnownScriptChar(c, script)
&& prefixIs(latex, from_ascii("\\" + script)))
column += writeScriptChars(os, latex,
running_change, encoding, i) - 1;
else if (latex.length() > 1 && latex[latex.length() - 1] != '}') {
// Prevent eating of a following
// space or command corruption by
// following characters
column += latex.length() + 1;
os << latex << "{}";
} else {
column += latex.length() - 1;
os << latex;
}
break;
}
}
bool Paragraph::Private::latexSpecialT1(char_type const c, odocstream & os,
pos_type i, unsigned int & column)
{
switch (c) {
case '>':
case '<':
os.put(c);
// In T1 encoding, these characters exist
// but we should avoid ligatures
if (i + 1 >= int(text_.size()) || text_[i + 1] != c)
return true;
os << "\\textcompwordmark{}";
column += 19;
return true;
case '|':
os.put(c);
return true;
case '\"':
// soul.sty breaks with \char`\"
os << "\\textquotedbl{}";
column += 14;
return true;
default:
return false;
}
}
bool Paragraph::Private::latexSpecialTypewriter(char_type const c, odocstream & os,
pos_type i, unsigned int & column)
{
switch (c) {
case '-':
// within \ttfamily, "--" is merged to "-" (no endash)
// so we avoid this rather irritating ligature
if (i + 1 < int(text_.size()) && text_[i + 1] == '-') {
os << "-{}";
column += 2;
} else
os << '-';
return true;
// everything else has to be checked separately
// (depending on the encoding)
default:
return false;
}
}
bool Paragraph::Private::latexSpecialPhrase(odocstream & os, pos_type & i,
unsigned int & column, OutputParams const & runparams)
{
// FIXME: if we have "LaTeX" with a font
// change in the middle (before the 'T', then
// the "TeX" part is still special cased.
// Really we should only operate this on
// "words" for some definition of word
for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
if (!isTextAt(special_phrases[pnr].phrase, i))
continue;
if (runparams.moving_arg)
os << "\\protect";
os << special_phrases[pnr].macro;
i += special_phrases[pnr].phrase.length() - 1;
column += special_phrases[pnr].macro.length() - 1;
return true;
}
return false;
}
void Paragraph::Private::validate(LaTeXFeatures & features,
Layout const & layout) const
{
// check the params.
if (!params_.spacing().isDefault())
features.require("setspace");
// then the layouts
features.useLayout(layout.name());
// then the fonts
fontlist_.validate(features);
// then the indentation
if (!params_.leftIndent().zero())
features.require("ParagraphLeftIndent");
// then the insets
InsetList::const_iterator icit = insetlist_.begin();
InsetList::const_iterator iend = insetlist_.end();
for (; icit != iend; ++icit) {
if (icit->inset) {
icit->inset->validate(features);
if (layout.needprotect &&
icit->inset->lyxCode() == FOOT_CODE)
features.require("NeedLyXFootnoteCode");
}
}
// then the contents
for (pos_type i = 0; i < int(text_.size()) ; ++i) {
for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
if (!special_phrases[pnr].builtin
&& isTextAt(special_phrases[pnr].phrase, i)) {
features.require(special_phrases[pnr].phrase);
break;
}
}
Encodings::validate(text_[i], features);
}
}
/////////////////////////////////////////////////////////////////////
//
// Paragraph
//
/////////////////////////////////////////////////////////////////////
namespace {
Layout const emptyParagraphLayout;
}
Paragraph::Paragraph()
: d(new Paragraph::Private(this, emptyParagraphLayout))
{
itemdepth = 0;
d->params_.clear();
}
Paragraph::Paragraph(Paragraph const & par)
: itemdepth(par.itemdepth),
d(new Paragraph::Private(*par.d, this))
{
registerWords();
}
Paragraph::Paragraph(Paragraph const & par, pos_type beg, pos_type end)
: itemdepth(par.itemdepth),
d(new Paragraph::Private(*par.d, this, beg, end))
{
registerWords();
}
Paragraph & Paragraph::operator=(Paragraph const & par)
{
// needed as we will destroy the private part before copying it
if (&par != this) {
itemdepth = par.itemdepth;
deregisterWords();
delete d;
d = new Private(*par.d, this);
registerWords();
}
return *this;
}
Paragraph::~Paragraph()
{
deregisterWords();
delete d;
}
void Paragraph::write(ostream & os, BufferParams const & bparams,
depth_type & dth) const
{
// The beginning or end of a deeper (i.e. nested) area?
if (dth != d->params_.depth()) {
if (d->params_.depth() > dth) {
while (d->params_.depth() > dth) {
os << "\n\\begin_deeper";
++dth;
}
} else {
while (d->params_.depth() < dth) {
os << "\n\\end_deeper";
--dth;
}
}
}
// First write the layout
os << "\n\\begin_layout " << to_utf8(d->layout_->name()) << '\n';
d->params_.write(os);
Font font1(inherit_font, bparams.language);
Change running_change = Change(Change::UNCHANGED);
int column = 0;
for (pos_type i = 0; i <= size(); ++i) {
Change change = lookupChange(i);
Changes::lyxMarkChange(os, column, running_change, change);
running_change = change;
if (i == size())
break;
// Write font changes
Font const & font2 = getFontSettings(bparams, i);
if (font2 != font1) {
font2.lyxWriteChanges(font1, os);
column = 0;
font1 = font2;
}
char_type const c = d->text_[i];
switch (c) {
case META_INSET:
if (Inset const * inset = getInset(i)) {
if (inset->directWrite()) {
// international char, let it write
// code directly so it's shorter in
// the file
inset->write(os);
} else {
if (i)
os << '\n';
os << "\\begin_inset ";
inset->write(os);
os << "\n\\end_inset\n\n";
column = 0;
}
}
break;
case '\\':
os << "\n\\backslash\n";
column = 0;
break;
case '.':
if (i + 1 < size() && d->text_[i + 1] == ' ') {
os << ".\n";
column = 0;
} else
os << '.';
break;
default:
if ((column > 70 && c == ' ')
|| column > 79) {
os << '\n';
column = 0;
}
// this check is to amend a bug. LyX sometimes
// inserts '\0' this could cause problems.
if (c != '\0')
os << to_utf8(docstring(1, c));
else
LYXERR0("NUL char in structure.");
++column;
break;
}
}
os << "\n\\end_layout\n";
}
void Paragraph::validate(LaTeXFeatures & features) const
{
d->validate(features, *d->layout_);
}
void Paragraph::insert(pos_type start, docstring const & str,
Font const & font, Change const & change)
{
for (size_t i = 0, n = str.size(); i != n ; ++i)
insertChar(start + i, str[i], font, change);
}
void Paragraph::appendChar(char_type c, Font const & font,
Change const & change)
{
// track change
d->changes_.insert(change, d->text_.size());
// when appending characters, no need to update tables
d->text_.push_back(c);
setFont(d->text_.size() - 1, font);
}
void Paragraph::appendString(docstring const & s, Font const & font,
Change const & change)
{
pos_type end = s.size();
size_t oldsize = d->text_.size();
size_t newsize = oldsize + end;
size_t capacity = d->text_.capacity();
if (newsize >= capacity)
d->text_.reserve(max(capacity + 100, newsize));
// when appending characters, no need to update tables
d->text_.append(s);
// FIXME: Optimize this!
for (size_t i = oldsize; i != newsize; ++i) {
// track change
d->changes_.insert(change, i);
}
d->fontlist_.set(oldsize, font);
d->fontlist_.set(newsize - 1, font);
}
void Paragraph::insertChar(pos_type pos, char_type c,
bool trackChanges)
{
d->insertChar(pos, c, Change(trackChanges ?
Change::INSERTED : Change::UNCHANGED));
}
void Paragraph::insertChar(pos_type pos, char_type c,
Font const & font, bool trackChanges)
{
d->insertChar(pos, c, Change(trackChanges ?
Change::INSERTED : Change::UNCHANGED));
setFont(pos, font);
}
void Paragraph::insertChar(pos_type pos, char_type c,
Font const & font, Change const & change)
{
d->insertChar(pos, c, change);
setFont(pos, font);
}
bool Paragraph::insertInset(pos_type pos, Inset * inset,
Font const & font, Change const & change)
{
bool const success = insertInset(pos, inset, change);
// Set the font/language of the inset...
setFont(pos, font);
return success;
}
void Paragraph::resetFonts(Font const & font)
{
d->fontlist_.clear();
d->fontlist_.set(0, font);
d->fontlist_.set(d->text_.size() - 1, font);
}
// Gets uninstantiated font setting at position.
Font const & Paragraph::getFontSettings(BufferParams const & bparams,
pos_type pos) const
{
if (pos > size()) {
LYXERR0("pos: " << pos << " size: " << size());
LASSERT(pos <= size(), /**/);
}
FontList::const_iterator cit = d->fontlist_.fontIterator(pos);
if (cit != d->fontlist_.end())
return cit->font();
if (pos == size() && !empty())
return getFontSettings(bparams, pos - 1);
// Optimisation: avoid a full font instantiation if there is no
// language change from previous call.
static Font previous_font;
static Language const * previous_lang = 0;
Language const * lang = getParLanguage(bparams);
if (lang != previous_lang) {
previous_lang = lang;
previous_font = Font(inherit_font, lang);
}
return previous_font;
}
FontSpan Paragraph::fontSpan(pos_type pos) const
{
LASSERT(pos <= size(), /**/);
pos_type start = 0;
FontList::const_iterator cit = d->fontlist_.begin();
FontList::const_iterator end = d->fontlist_.end();
for (; cit != end; ++cit) {
if (cit->pos() >= pos) {
if (pos >= beginOfBody())
return FontSpan(max(start, beginOfBody()),
cit->pos());
else
return FontSpan(start,
min(beginOfBody() - 1,
cit->pos()));
}
start = cit->pos() + 1;
}
// This should not happen, but if so, we take no chances.
// LYXERR0("Paragraph::getEndPosOfFontSpan: This should not happen!");
return FontSpan(pos, pos);
}
// Gets uninstantiated font setting at position 0
Font const & Paragraph::getFirstFontSettings(BufferParams const & bparams) const
{
if (!empty() && !d->fontlist_.empty())
return d->fontlist_.begin()->font();
// Optimisation: avoid a full font instantiation if there is no
// language change from previous call.
static Font previous_font;
static Language const * previous_lang = 0;
if (bparams.language != previous_lang) {
previous_lang = bparams.language;
previous_font = Font(inherit_font, bparams.language);
}
return previous_font;
}
// Gets the fully instantiated font at a given position in a paragraph
// This is basically the same function as Text::GetFont() in text2.cpp.
// The difference is that this one is used for generating the LaTeX file,
// and thus cosmetic "improvements" are disallowed: This has to deliver
// the true picture of the buffer. (Asger)
Font const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
Font const & outerfont) const
{
LASSERT(pos >= 0, /**/);
Font font = getFontSettings(bparams, pos);
pos_type const body_pos = beginOfBody();
FontInfo & fi = font.fontInfo();
if (pos < body_pos)
fi.realize(d->layout_->labelfont);
else
fi.realize(d->layout_->font);
fi.realize(outerfont.fontInfo());
fi.realize(bparams.getFont().fontInfo());
return font;
}
Font const Paragraph::getLabelFont
(BufferParams const & bparams, Font const & outerfont) const
{
FontInfo tmpfont = d->layout_->labelfont;
tmpfont.realize(outerfont.fontInfo());
tmpfont.realize(bparams.getFont().fontInfo());
return Font(tmpfont, getParLanguage(bparams));
}
Font const Paragraph::getLayoutFont
(BufferParams const & bparams, Font const & outerfont) const
{
FontInfo tmpfont = d->layout_->font;
tmpfont.realize(outerfont.fontInfo());
tmpfont.realize(bparams.getFont().fontInfo());
return Font(tmpfont, getParLanguage(bparams));
}
/// Returns the height of the highest font in range
FontSize Paragraph::highestFontInRange
(pos_type startpos, pos_type endpos, FontSize def_size) const
{
return d->fontlist_.highestInRange(startpos, endpos, def_size);
}
char_type Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
{
char_type c = d->text_[pos];
if (!lyxrc.rtl_support)
return c;
char_type uc = c;
switch (c) {
case '(':
uc = ')';
break;
case ')':
uc = '(';
break;
case '[':
uc = ']';
break;
case ']':
uc = '[';
break;
case '{':
uc = '}';
break;
case '}':
uc = '{';
break;
case '<':
uc = '>';
break;
case '>':
uc = '<';
break;
}
if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
return uc;
return c;
}
void Paragraph::setFont(pos_type pos, Font const & font)
{
LASSERT(pos <= size(), /**/);
// First, reduce font against layout/label font
// Update: The setCharFont() routine in text2.cpp already
// reduces font, so we don't need to do that here. (Asger)
d->fontlist_.set(pos, font);
}
void Paragraph::makeSameLayout(Paragraph const & par)
{
d->layout_ = par.d->layout_;
d->params_ = par.d->params_;
}
bool Paragraph::stripLeadingSpaces(bool trackChanges)
{
if (isFreeSpacing())
return false;
int pos = 0;
int count = 0;
while (pos < size() && (isNewline(pos) || isLineSeparator(pos))) {
if (eraseChar(pos, trackChanges))
++count;
else
++pos;
}
return count > 0 || pos > 0;
}
bool Paragraph::hasSameLayout(Paragraph const & par) const
{
return par.d->layout_ == d->layout_
&& d->params_.sameLayout(par.d->params_);
}
depth_type Paragraph::getDepth() const
{
return d->params_.depth();
}
depth_type Paragraph::getMaxDepthAfter() const
{
if (d->layout_->isEnvironment())
return d->params_.depth() + 1;
else
return d->params_.depth();
}
char Paragraph::getAlign() const
{
if (d->params_.align() == LYX_ALIGN_LAYOUT)
return d->layout_->align;
else
return d->params_.align();
}
docstring const & Paragraph::labelString() const
{
return d->params_.labelString();
}
// the next two functions are for the manual labels
docstring const Paragraph::getLabelWidthString() const
{
if (d->layout_->margintype == MARGIN_MANUAL)
return d->params_.labelWidthString();
else
return _("Senseless with this layout!");
}
void Paragraph::setLabelWidthString(docstring const & s)
{
d->params_.labelWidthString(s);
}
docstring const Paragraph::translateIfPossible(docstring const & s,
BufferParams const & bparams) const
{
if (!isAscii(s) || s.empty()) {
// This must be a user defined layout. We cannot translate
// this, since gettext accepts only ascii keys.
return s;
}
// Probably standard layout, try to translate
Messages & m = getMessages(getParLanguage(bparams)->code());
return m.get(to_ascii(s));
}
docstring Paragraph::expandLabel(Layout const & layout,
BufferParams const & bparams, bool process_appendix) const
{
DocumentClass const & tclass = bparams.documentClass();
docstring fmt;
if (process_appendix && d->params_.appendix())
fmt = translateIfPossible(layout.labelstring_appendix(),
bparams);
else
fmt = translateIfPossible(layout.labelstring(), bparams);
if (fmt.empty() && layout.labeltype == LABEL_COUNTER
&& !layout.counter.empty())
fmt = "\\the" + layout.counter;
// handle 'inherited level parts' in 'fmt',
// i.e. the stuff between '@' in '@Section@.\arabic{subsection}'
size_t const i = fmt.find('@', 0);
if (i != docstring::npos) {
size_t const j = fmt.find('@', i + 1);
if (j != docstring::npos) {
docstring parent(fmt, i + 1, j - i - 1);
docstring label = from_ascii("??");
if (tclass.hasLayout(parent))
docstring label = expandLabel(tclass[parent], bparams,
process_appendix);
fmt = docstring(fmt, 0, i) + label
+ docstring(fmt, j + 1, docstring::npos);
}
}
return tclass.counters().counterLabel(fmt);
}
void Paragraph::applyLayout(Layout const & new_layout)
{
d->layout_ = &new_layout;
LyXAlignment const oldAlign = d->params_.align();
if (!(oldAlign & d->layout_->alignpossible)) {
frontend::Alert::warning(_("Alignment not permitted"),
_("The new layout does not permit the alignment previously used.\nSetting to default."));
d->params_.align(LYX_ALIGN_LAYOUT);
}
}
pos_type Paragraph::beginOfBody() const
{
return d->begin_of_body_;
}
void Paragraph::setBeginOfBody()
{
if (d->layout_->labeltype != LABEL_MANUAL) {
d->begin_of_body_ = 0;
return;
}
// Unroll the first two cycles of the loop
// and remember the previous character to
// remove unnecessary getChar() calls
pos_type i = 0;
pos_type end = size();
if (i < end && !isNewline(i)) {
++i;
char_type previous_char = 0;
char_type temp = 0;
if (i < end) {
previous_char = d->text_[i];
if (!isNewline(i)) {
++i;
while (i < end && previous_char != ' ') {
temp = d->text_[i];
if (isNewline(i))
break;
++i;
previous_char = temp;
}
}
}
}
d->begin_of_body_ = i;
}
bool Paragraph::forcePlainLayout() const
{
return inInset().forcePlainLayout();
}
bool Paragraph::allowParagraphCustomization() const
{
return inInset().allowParagraphCustomization();
}
bool Paragraph::usePlainLayout() const
{
return inInset().usePlainLayout();
}
namespace {
// paragraphs inside floats need different alignment tags to avoid
// unwanted space
bool noTrivlistCentering(InsetCode code)
{
return code == FLOAT_CODE
|| code == WRAP_CODE
|| code == CELL_CODE;
}
string correction(string const & orig)
{
if (orig == "flushleft")
return "raggedright";
if (orig == "flushright")
return "raggedleft";
if (orig == "center")
return "centering";
return orig;
}
string const corrected_env(string const & suffix, string const & env,
InsetCode code, bool const lastpar)
{
string output = suffix + "{";
if (noTrivlistCentering(code)) {
if (lastpar) {
// the last paragraph in non-trivlist-aligned
// context is special (to avoid unwanted whitespace)
if (suffix == "\\begin")
return "\\" + correction(env) + "{}";
return string();
}
output += correction(env);
} else
output += env;
output += "}";
if (suffix == "\\begin")
output += "\n";
return output;
}
void adjust_row_column(string const & str, TexRow & texrow, int & column)
{
if (!contains(str, "\n"))
column += str.size();
else {
string tmp;
texrow.newline();
column = rsplit(str, tmp, '\n').size();
}
}
} // namespace anon
int Paragraph::Private::startTeXParParams(BufferParams const & bparams,
odocstream & os, TexRow & texrow,
OutputParams const & runparams) const
{
int column = 0;
if (params_.noindent()) {
os << "\\noindent ";
column += 10;
}
LyXAlignment const curAlign = params_.align();
if (curAlign == layout_->align)
return column;
switch (curAlign) {
case LYX_ALIGN_NONE:
case LYX_ALIGN_BLOCK:
case LYX_ALIGN_LAYOUT:
case LYX_ALIGN_SPECIAL:
break;
case LYX_ALIGN_LEFT:
case LYX_ALIGN_RIGHT:
case LYX_ALIGN_CENTER:
if (runparams.moving_arg) {
os << "\\protect";
column += 8;
}
break;
}
string const begin_tag = "\\begin";
InsetCode code = owner_->ownerCode();
bool const lastpar = runparams.isLastPar;
switch (curAlign) {
case LYX_ALIGN_NONE:
case LYX_ALIGN_BLOCK:
case LYX_ALIGN_LAYOUT:
case LYX_ALIGN_SPECIAL:
break;
case LYX_ALIGN_LEFT: {
string output;
if (owner_->getParLanguage(bparams)->babel() != "hebrew")
output = corrected_env(begin_tag, "flushleft", code, lastpar);
else
output = corrected_env(begin_tag, "flushright", code, lastpar);
os << from_ascii(output);
adjust_row_column(output, texrow, column);
break;
} case LYX_ALIGN_RIGHT: {
string output;
if (owner_->getParLanguage(bparams)->babel() != "hebrew")
output = corrected_env(begin_tag, "flushright", code, lastpar);
else
output = corrected_env(begin_tag, "flushleft", code, lastpar);
os << from_ascii(output);
adjust_row_column(output, texrow, column);
break;
} case LYX_ALIGN_CENTER: {
string output;
output = corrected_env(begin_tag, "center", code, lastpar);
os << from_ascii(output);
adjust_row_column(output, texrow, column);
break;
}
}
return column;
}
int Paragraph::Private::endTeXParParams(BufferParams const & bparams,
odocstream & os, TexRow & texrow,
OutputParams const & runparams) const
{
int column = 0;
switch (params_.align()) {
case LYX_ALIGN_NONE:
case LYX_ALIGN_BLOCK:
case LYX_ALIGN_LAYOUT:
case LYX_ALIGN_SPECIAL:
break;
case LYX_ALIGN_LEFT:
case LYX_ALIGN_RIGHT:
case LYX_ALIGN_CENTER:
if (runparams.moving_arg) {
os << "\\protect";
column = 8;
}
break;
}
string const end_tag = "\n\\par\\end";
InsetCode code = owner_->ownerCode();
bool const lastpar = runparams.isLastPar;
switch (params_.align()) {
case LYX_ALIGN_NONE:
case LYX_ALIGN_BLOCK:
case LYX_ALIGN_LAYOUT:
case LYX_ALIGN_SPECIAL:
break;
case LYX_ALIGN_LEFT: {
string output;
if (owner_->getParLanguage(bparams)->babel() != "hebrew")
output = corrected_env(end_tag, "flushleft", code, lastpar);
else
output = corrected_env(end_tag, "flushright", code, lastpar);
os << from_ascii(output);
adjust_row_column(output, texrow, column);
break;
} case LYX_ALIGN_RIGHT: {
string output;
if (owner_->getParLanguage(bparams)->babel() != "hebrew")
output = corrected_env(end_tag, "flushright", code, lastpar);
else
output = corrected_env(end_tag, "flushleft", code, lastpar);
os << from_ascii(output);
adjust_row_column(output, texrow, column);
break;
} case LYX_ALIGN_CENTER: {
string output;
output = corrected_env(end_tag, "center", code, lastpar);
os << from_ascii(output);
adjust_row_column(output, texrow, column);
break;
}
}
return column;
}
// This one spits out the text of the paragraph
bool Paragraph::latex(BufferParams const & bparams,
Font const & outerfont,
odocstream & os, TexRow & texrow,
OutputParams const & runparams,
int start_pos, int end_pos) const
{
LYXERR(Debug::LATEX, "Paragraph::latex... " << this);
bool return_value = false;
bool const allowcust = allowParagraphCustomization();
// FIXME This check should not be needed. Perhaps issue an
// error if it triggers.
Layout const & style = forcePlainLayout() ?
bparams.documentClass().plainLayout() : *d->layout_;
// Current base font for all inherited font changes, without any
// change caused by an individual character, except for the language:
// It is set to the language of the first character.
// As long as we are in the label, this font is the base font of the
// label. Before the first body character it is set to the base font
// of the body.
Font basefont;
// Maybe we have to create a optional argument.
pos_type body_pos = beginOfBody();
unsigned int column = 0;
if (body_pos > 0) {
// the optional argument is kept in curly brackets in
// case it contains a ']'
os << "[{";
column += 2;
basefont = getLabelFont(bparams, outerfont);
} else {
basefont = getLayoutFont(bparams, outerfont);
}
// Which font is currently active?
Font running_font(basefont);
// Do we have an open font change?
bool open_font = false;
Change runningChange = Change(Change::UNCHANGED);
texrow.start(id(), 0);
// if the paragraph is empty, the loop will not be entered at all
if (empty()) {
if (style.isCommand()) {
os << '{';
++column;
}
if (allowcust)
column += d->startTeXParParams(bparams, os, texrow,
runparams);
}
for (pos_type i = 0; i < size(); ++i) {
// First char in paragraph or after label?
if (i == body_pos) {
if (body_pos > 0) {
if (open_font) {
column += running_font.latexWriteEndChanges(
os, bparams, runparams,
basefont, basefont);
open_font = false;
}
basefont = getLayoutFont(bparams, outerfont);
running_font = basefont;
column += Changes::latexMarkChange(os, bparams,
runningChange, Change(Change::UNCHANGED));
runningChange = Change(Change::UNCHANGED);
os << "}] ";
column +=3;
}
if (style.isCommand()) {
os << '{';
++column;
}
if (allowcust)
column += d->startTeXParParams(bparams, os,
texrow,
runparams);
}
Change const & change = runparams.inDeletedInset ? runparams.changeOfDeletedInset
: lookupChange(i);
if (bparams.outputChanges && runningChange != change) {
if (open_font) {
column += running_font.latexWriteEndChanges(
os, bparams, runparams, basefont, basefont);
open_font = false;
}
basefont = getLayoutFont(bparams, outerfont);
running_font = basefont;
column += Changes::latexMarkChange(os, bparams, runningChange, change);
runningChange = change;
}
// do not output text which is marked deleted
// if change tracking output is disabled
if (!bparams.outputChanges && change.type == Change::DELETED) {
continue;
}
++column;
// Fully instantiated font
Font const font = getFont(bparams, i, outerfont);
Font const last_font = running_font;
// Do we need to close the previous font?
if (open_font &&
(font != running_font ||
font.language() != running_font.language()))
{
column += running_font.latexWriteEndChanges(
os, bparams, runparams, basefont,
(i == body_pos-1) ? basefont : font);
running_font = basefont;
open_font = false;
}
// close babel's font environment before opening CJK.
if (!running_font.language()->babel().empty() &&
font.language()->encoding()->package() == Encoding::CJK) {
string end_tag = subst(lyxrc.language_command_end,
"$$lang",
running_font.language()->babel());
os << from_ascii(end_tag);
column += end_tag.length();
}
// Switch file encoding if necessary (and allowed)
if (!runparams.verbatim &&
runparams.encoding->package() != Encoding::none &&
font.language()->encoding()->package() != Encoding::none) {
pair<bool, int> const enc_switch = switchEncoding(os, bparams,
runparams, *(font.language()->encoding()));
if (enc_switch.first) {
column += enc_switch.second;
runparams.encoding = font.language()->encoding();
}
}
char_type const c = d->text_[i];
// Do we need to change font?
if ((font != running_font ||
font.language() != running_font.language()) &&
i != body_pos - 1)
{
odocstringstream ods;
column += font.latexWriteStartChanges(ods, bparams,
runparams, basefont,
last_font);
running_font = font;
open_font = true;
docstring fontchange = ods.str();
// check if the fontchange ends with a trailing blank
// (like "\small " (see bug 3382)
if (suffixIs(fontchange, ' ') && c == ' ')
os << fontchange.substr(0, fontchange.size() - 1)
<< from_ascii("{}");
else
os << fontchange;
}
// FIXME: think about end_pos implementation...
if (c == ' ' && i >= start_pos && (end_pos == -1 || i < end_pos)) {
// FIXME: integrate this case in latexSpecialChar
// Do not print the separation of the optional argument
// if style.pass_thru is false. This works because
// latexSpecialChar ignores spaces if
// style.pass_thru is false.
if (i != body_pos - 1) {
if (d->simpleTeXBlanks(
runparams, os, texrow,
i, column, font, style)) {
// A surrogate pair was output. We
// must not call latexSpecialChar
// in this iteration, since it would output
// the combining character again.
++i;
continue;
}
}
}
OutputParams rp = runparams;
rp.free_spacing = style.free_spacing;
rp.local_font = &font;
rp.intitle = style.intitle;
// Two major modes: LaTeX or plain
// Handle here those cases common to both modes
// and then split to handle the two modes separately.
if (c == META_INSET) {
if (i >= start_pos && (end_pos == -1 || i < end_pos)) {
d->latexInset(bparams, os,
texrow, rp, running_font,
basefont, outerfont, open_font,
runningChange, style, i, column);
}
} else {
if (i >= start_pos && (end_pos == -1 || i < end_pos)) {
try {
d->latexSpecialChar(os, rp, running_font, runningChange,
style, i, column);
} catch (EncodingException & e) {
if (runparams.dryrun) {
os << "<" << _("LyX Warning: ")
<< _("uncodable character") << " '";
os.put(c);
os << "'>";
} else {
// add location information and throw again.
e.par_id = id();
e.pos = i;
throw(e);
}
}
}
}
// Set the encoding to that returned from latexSpecialChar (see
// comment for encoding member in OutputParams.h)
runparams.encoding = rp.encoding;
}
// If we have an open font definition, we have to close it
if (open_font) {
#ifdef FIXED_LANGUAGE_END_DETECTION
if (next_) {
running_font
.latexWriteEndChanges(os, bparams, runparams,
basefont,
next_->getFont(bparams, 0, outerfont));
} else {
running_font.latexWriteEndChanges(os, bparams,
runparams, basefont, basefont);
}
#else
//FIXME: For now we ALWAYS have to close the foreign font settings if they are
//FIXME: there as we start another \selectlanguage with the next paragraph if
//FIXME: we are in need of this. This should be fixed sometime (Jug)
running_font.latexWriteEndChanges(os, bparams, runparams,
basefont, basefont);
#endif
}
column += Changes::latexMarkChange(os, bparams, runningChange, Change(Change::UNCHANGED));
// Needed if there is an optional argument but no contents.
if (body_pos > 0 && body_pos == size()) {
os << "}]~";
return_value = false;
}
if (allowcust) {
column += d->endTeXParParams(bparams, os, texrow,
runparams);
}
LYXERR(Debug::LATEX, "Paragraph::latex... done " << this);
return return_value;
}
bool Paragraph::emptyTag() const
{
for (pos_type i = 0; i < size(); ++i) {
if (Inset const * inset = getInset(i)) {
InsetCode lyx_code = inset->lyxCode();
if (lyx_code != TOC_CODE &&
lyx_code != INCLUDE_CODE &&
lyx_code != GRAPHICS_CODE &&
lyx_code != ERT_CODE &&
lyx_code != LISTINGS_CODE &&
lyx_code != FLOAT_CODE &&
lyx_code != TABULAR_CODE) {
return false;
}
} else {
char_type c = d->text_[i];
if (c != ' ' && c != '\t')
return false;
}
}
return true;
}
string Paragraph::getID(Buffer const & buf, OutputParams const & runparams)
const
{
for (pos_type i = 0; i < size(); ++i) {
if (Inset const * inset = getInset(i)) {
InsetCode lyx_code = inset->lyxCode();
if (lyx_code == LABEL_CODE) {
InsetLabel const * const il = static_cast<InsetLabel const *>(inset);
docstring const & id = il->getParam("name");
return "id='" + to_utf8(sgml::cleanID(buf, runparams, id)) + "'";
}
}
}
return string();
}
pos_type Paragraph::firstWord(odocstream & os, OutputParams const & runparams)
const
{
pos_type i;
for (i = 0; i < size(); ++i) {
if (Inset const * inset = getInset(i)) {
inset->docbook(os, runparams);
} else {
char_type c = d->text_[i];
if (c == ' ')
break;
os << sgml::escapeChar(c);
}
}
return i;
}
bool Paragraph::Private::onlyText(Buffer const & buf, Font const & outerfont, pos_type initial) const
{
Font font_old;
pos_type size = text_.size();
for (pos_type i = initial; i < size; ++i) {
Font font = owner_->getFont(buf.params(), i, outerfont);
if (text_[i] == META_INSET)
return false;
if (i != initial && font != font_old)
return false;
font_old = font;
}
return true;
}
void Paragraph::simpleDocBookOnePar(Buffer const & buf,
odocstream & os,
OutputParams const & runparams,
Font const & outerfont,
pos_type initial) const
{
bool emph_flag = false;
Layout const & style = *d->layout_;
FontInfo font_old =
style.labeltype == LABEL_MANUAL ? style.labelfont : style.font;
if (style.pass_thru && !d->onlyText(buf, outerfont, initial))
os << "]]>";
// parsing main loop
for (pos_type i = initial; i < size(); ++i) {
Font font = getFont(buf.params(), i, outerfont);
// handle <emphasis> tag
if (font_old.emph() != font.fontInfo().emph()) {
if (font.fontInfo().emph() == FONT_ON) {
os << "<emphasis>";
emph_flag = true;
} else if (i != initial) {
os << "</emphasis>";
emph_flag = false;
}
}
if (Inset const * inset = getInset(i)) {
inset->docbook(os, runparams);
} else {
char_type c = d->text_[i];
if (style.pass_thru)
os.put(c);
else
os << sgml::escapeChar(c);
}
font_old = font.fontInfo();
}
if (emph_flag) {
os << "</emphasis>";
}
if (style.free_spacing)
os << '\n';
if (style.pass_thru && !d->onlyText(buf, outerfont, initial))
os << "<![CDATA[";
}
bool Paragraph::isHfill(pos_type pos) const
{
Inset const * inset = getInset(pos);
return inset && (inset->lyxCode() == SPACE_CODE &&
inset->isStretchableSpace());
}
bool Paragraph::isNewline(pos_type pos) const
{
Inset const * inset = getInset(pos);
return inset && inset->lyxCode() == NEWLINE_CODE;
}
bool Paragraph::isLineSeparator(pos_type pos) const
{
char_type const c = d->text_[pos];
if (isLineSeparatorChar(c))
return true;
Inset const * inset = getInset(pos);
return inset && inset->isLineSeparator();
}
/// Used by the spellchecker
bool Paragraph::isLetter(pos_type pos) const
{
if (Inset const * inset = getInset(pos))
return inset->isLetter();
char_type const c = d->text_[pos];
return isLetterChar(c) || isDigit(c);
}
bool Paragraph::isChar(pos_type pos) const
{
if (Inset const * inset = getInset(pos))
return inset->isChar();
char_type const c = d->text_[pos];
return !isLetterChar(c) && !isDigit(c) && !lyx::isSpace(c);
}
bool Paragraph::isSpace(pos_type pos) const
{
if (Inset const * inset = getInset(pos))
return inset->isSpace();
char_type const c = d->text_[pos];
return lyx::isSpace(c);
}
Language const *
Paragraph::getParLanguage(BufferParams const & bparams) const
{
if (!empty())
return getFirstFontSettings(bparams).language();
// FIXME: we should check the prev par as well (Lgb)
return bparams.language;
}
bool Paragraph::isRTL(BufferParams const & bparams) const
{
return lyxrc.rtl_support
&& getParLanguage(bparams)->rightToLeft()
&& ownerCode() != ERT_CODE
&& ownerCode() != LISTINGS_CODE;
}
void Paragraph::changeLanguage(BufferParams const & bparams,
Language const * from, Language const * to)
{
// change language including dummy font change at the end
for (pos_type i = 0; i <= size(); ++i) {
Font font = getFontSettings(bparams, i);
if (font.language() == from) {
font.setLanguage(to);
setFont(i, font);
}
}
}
bool Paragraph::isMultiLingual(BufferParams const & bparams) const
{
Language const * doc_language = bparams.language;
FontList::const_iterator cit = d->fontlist_.begin();
FontList::const_iterator end = d->fontlist_.end();
for (; cit != end; ++cit)
if (cit->font().language() != ignore_language &&
cit->font().language() != latex_language &&
cit->font().language() != doc_language)
return true;
return false;
}
docstring Paragraph::asString(int options) const
{
return asString(0, size(), options);
}
docstring Paragraph::asString(pos_type beg, pos_type end, int options) const
{
odocstringstream os;
if (beg == 0
&& options & AS_STR_LABEL
&& !d->params_.labelString().empty())
os << d->params_.labelString() << ' ';
for (pos_type i = beg; i < end; ++i) {
char_type const c = d->text_[i];
if (isPrintable(c) || c == '\t'
|| (c == '\n' && options & AS_STR_NEWLINES))
os.put(c);
else if (c == META_INSET && options & AS_STR_INSETS)
getInset(i)->tocString(os);
}
return os.str();
}
void Paragraph::setInsetOwner(Inset const * inset)
{
d->inset_owner_ = inset;
}
int Paragraph::id() const
{
return d->id_;
}
Layout const & Paragraph::layout() const
{
return *d->layout_;
}
void Paragraph::setLayout(Layout const & layout)
{
d->layout_ = &layout;
}
void Paragraph::setDefaultLayout(DocumentClass const & tc)
{
setLayout(tc.defaultLayout());
}
void Paragraph::setPlainLayout(DocumentClass const & tc)
{
setLayout(tc.plainLayout());
}
void Paragraph::setPlainOrDefaultLayout(DocumentClass const & tclass)
{
if (usePlainLayout())
setPlainLayout(tclass);
else
setDefaultLayout(tclass);
}
Inset const & Paragraph::inInset() const
{
LASSERT(d->inset_owner_, throw ExceptionMessage(BufferException,
_("Memory problem"), _("Paragraph not properly initialized")));
return *d->inset_owner_;
}
InsetCode Paragraph::ownerCode() const
{
return d->inset_owner_ ? d->inset_owner_->lyxCode() : NO_CODE;
}
ParagraphParameters & Paragraph::params()
{
return d->params_;
}
ParagraphParameters const & Paragraph::params() const
{
return d->params_;
}
bool Paragraph::isFreeSpacing() const
{
if (d->layout_->free_spacing)
return true;
return d->inset_owner_ && d->inset_owner_->isFreeSpacing();
}
bool Paragraph::allowEmpty() const
{
if (d->layout_->keepempty)
return true;
return d->inset_owner_ && d->inset_owner_->allowEmpty();
}
char_type Paragraph::transformChar(char_type c, pos_type pos) const
{
if (!Encodings::isArabicChar(c))
return c;
char_type prev_char = ' ';
char_type next_char = ' ';
for (pos_type i = pos - 1; i >= 0; --i) {
char_type const par_char = d->text_[i];
if (!Encodings::isArabicComposeChar(par_char)) {
prev_char = par_char;
break;
}
}
for (pos_type i = pos + 1, end = size(); i < end; ++i) {
char_type const par_char = d->text_[i];
if (!Encodings::isArabicComposeChar(par_char)) {
next_char = par_char;
break;
}
}
if (Encodings::isArabicChar(next_char)) {
if (Encodings::isArabicChar(prev_char) &&
!Encodings::isArabicSpecialChar(prev_char))
return Encodings::transformChar(c, Encodings::FORM_MEDIAL);
else
return Encodings::transformChar(c, Encodings::FORM_INITIAL);
} else {
if (Encodings::isArabicChar(prev_char) &&
!Encodings::isArabicSpecialChar(prev_char))
return Encodings::transformChar(c, Encodings::FORM_FINAL);
else
return Encodings::transformChar(c, Encodings::FORM_ISOLATED);
}
}
int Paragraph::checkBiblio(Buffer const & buffer)
{
// FIXME From JS:
// This is getting more and more a mess. ...We really should clean
// up this bibitem issue for 1.6. See also bug 2743.
// Add bibitem insets if necessary
if (d->layout_->labeltype != LABEL_BIBLIO)
return 0;
bool hasbibitem = !d->insetlist_.empty()
// Insist on it being in pos 0
&& d->text_[0] == META_INSET
&& d->insetlist_.begin()->inset->lyxCode() == BIBITEM_CODE;
bool track_changes = buffer.params().trackChanges;
docstring oldkey;
docstring oldlabel;
// remove a bibitem in pos != 0
// restore it later in pos 0 if necessary
// (e.g. if a user inserts contents _before_ the item)
// we're assuming there's only one of these, which there
// should be.
int erasedInsetPosition = -1;
InsetList::iterator it = d->insetlist_.begin();
InsetList::iterator end = d->insetlist_.end();
for (; it != end; ++it)
if (it->inset->lyxCode() == BIBITEM_CODE
&& it->pos > 0) {
InsetBibitem * olditem = static_cast<InsetBibitem *>(it->inset);
oldkey = olditem->getParam("key");
oldlabel = olditem->getParam("label");
erasedInsetPosition = it->pos;
eraseChar(erasedInsetPosition, track_changes);
break;
}
// There was an InsetBibitem at the beginning, and we didn't
// have to erase one.
if (hasbibitem && erasedInsetPosition < 0)
return 0;
// There was an InsetBibitem at the beginning and we did have to
// erase one. So we give its properties to the beginning inset.
if (hasbibitem) {
InsetBibitem * inset =
static_cast<InsetBibitem *>(d->insetlist_.begin()->inset);
if (!oldkey.empty())
inset->setParam("key", oldkey);
inset->setParam("label", oldlabel);
return -erasedInsetPosition;
}
// There was no inset at the beginning, so we need to create one with
// the key and label of the one we erased.
InsetBibitem * inset =
new InsetBibitem(buffer, InsetCommandParams(BIBITEM_CODE));
// restore values of previously deleted item in this par.
if (!oldkey.empty())
inset->setParam("key", oldkey);
inset->setParam("label", oldlabel);
insertInset(0, static_cast<Inset *>(inset),
Change(track_changes ? Change::INSERTED : Change::UNCHANGED));
return 1;
}
void Paragraph::checkAuthors(AuthorList const & authorList)
{
d->changes_.checkAuthors(authorList);
}
bool Paragraph::isUnchanged(pos_type pos) const
{
return lookupChange(pos).type == Change::UNCHANGED;
}
bool Paragraph::isInserted(pos_type pos) const
{
return lookupChange(pos).type == Change::INSERTED;
}
bool Paragraph::isDeleted(pos_type pos) const
{
return lookupChange(pos).type == Change::DELETED;
}
InsetList const & Paragraph::insetList() const
{
return d->insetlist_;
}
void Paragraph::setBuffer(Buffer & b)
{
d->insetlist_.setBuffer(b);
}
Inset * Paragraph::releaseInset(pos_type pos)
{
Inset * inset = d->insetlist_.release(pos);
/// does not honour change tracking!
eraseChar(pos, false);
return inset;
}
Inset * Paragraph::getInset(pos_type pos)
{
return (pos < pos_type(d->text_.size()) && d->text_[pos] == META_INSET)
? d->insetlist_.get(pos) : 0;
}
Inset const * Paragraph::getInset(pos_type pos) const
{
return (pos < pos_type(d->text_.size()) && d->text_[pos] == META_INSET)
? d->insetlist_.get(pos) : 0;
}
void Paragraph::changeCase(BufferParams const & bparams, pos_type pos,
pos_type & right, TextCase action)
{
// process sequences of modified characters; in change
// tracking mode, this approach results in much better
// usability than changing case on a char-by-char basis
docstring changes;
bool const trackChanges = bparams.trackChanges;
bool capitalize = true;
for (; pos < right; ++pos) {
char_type oldChar = d->text_[pos];
char_type newChar = oldChar;
// ignore insets and don't play with deleted text!
if (oldChar != META_INSET && !isDeleted(pos)) {
switch (action) {
case text_lowercase:
newChar = lowercase(oldChar);
break;
case text_capitalization:
if (capitalize) {
newChar = uppercase(oldChar);
capitalize = false;
}
break;
case text_uppercase:
newChar = uppercase(oldChar);
break;
}
}
if (!isLetter(pos) || isDeleted(pos)) {
// permit capitalization again
capitalize = true;
}
if (oldChar != newChar)
changes += newChar;
if (oldChar == newChar || pos == right - 1) {
if (oldChar != newChar) {
// step behind the changing area
pos++;
}
int erasePos = pos - changes.size();
for (size_t i = 0; i < changes.size(); i++) {
insertChar(pos, changes[i],
getFontSettings(bparams,
erasePos),
trackChanges);
if (!eraseChar(erasePos, trackChanges)) {
++erasePos;
++pos; // advance
++right; // expand selection
}
}
changes.clear();
}
}
}
bool Paragraph::find(docstring const & str, bool cs, bool mw,
pos_type pos, bool del) const
{
int const strsize = str.length();
int i = 0;
pos_type const parsize = d->text_.size();
for (i = 0; pos + i < parsize; ++i) {
if (i >= strsize)
break;
if (cs && str[i] != d->text_[pos + i])
break;
if (!cs && uppercase(str[i]) != uppercase(d->text_[pos + i]))
break;
if (!del && isDeleted(pos + i))
break;
}
if (i != strsize)
return false;
// if necessary, check whether string matches word
if (mw) {
if (pos > 0 && isLetter(pos - 1))
return false;
if (pos + strsize < parsize
&& isLetter(pos + strsize))
return false;
}
return true;
}
char_type Paragraph::getChar(pos_type pos) const
{
return d->text_[pos];
}
pos_type Paragraph::size() const
{
return d->text_.size();
}
bool Paragraph::empty() const
{
return d->text_.empty();
}
bool Paragraph::isInset(pos_type pos) const
{
return d->text_[pos] == META_INSET;
}
bool Paragraph::isSeparator(pos_type pos) const
{
//FIXME: Are we sure this can be the only separator?
return d->text_[pos] == ' ';
}
void Paragraph::deregisterWords()
{
Private::Words::const_iterator it;
WordList & wl = theWordList();
for (it = d->words_.begin(); it != d->words_.end(); ++it)
wl.remove(*it);
d->words_.clear();
}
void Paragraph::collectWords(CursorSlice const & sl)
{
// find new words
bool inword = false;
//lyxerr << "Words: ";
pos_type n = size();
for (pos_type pos = 0; pos != n; ++pos) {
if (isDeleted(pos))
continue;
if (!isLetter(pos)) {
inword = false;
continue;
}
if (inword)
continue;
inword = true;
CursorSlice from = sl;
CursorSlice to = sl;
from.pos() = pos;
to.pos() = pos;
from.text()->getWord(from, to, WHOLE_WORD);
if (to.pos() - from.pos() < 6)
continue;
docstring word = asString(from.pos(), to.pos(), false);
d->words_.insert(word);
//lyxerr << word << " ";
}
//lyxerr << std::endl;
}
void Paragraph::registerWords()
{
Private::Words::const_iterator it;
WordList & wl = theWordList();
for (it = d->words_.begin(); it != d->words_.end(); ++it)
wl.insert(*it);
}
void Paragraph::updateWords(CursorSlice const & sl)
{
LASSERT(&sl.paragraph() == this, /**/);
deregisterWords();
collectWords(sl);
registerWords();
}
} // namespace lyx
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