X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FDocIterator.cpp;h=6eba5a792e2d472d786feda2bf769e82b8dacb37;hb=1bd49f9c39b103b2d8bbe079bc603cfa47509ae5;hp=0555a9f75f1db9dc2b467c22ee80f54415e4becf;hpb=f361c26a0522059556b550cd0f468794af2ad301;p=lyx.git

diff --git a/src/DocIterator.cpp b/src/DocIterator.cpp
index 0555a9f75f..6eba5a792e 100644
--- a/src/DocIterator.cpp
+++ b/src/DocIterator.cpp
@@ -15,9 +15,12 @@
 #include "DocIterator.h"
 
 #include "Buffer.h"
+#include "BufferParams.h"
+#include "Encoding.h"
+#include "Font.h"
 #include "InsetList.h"
+#include "Language.h"
 #include "Paragraph.h"
-#include "LyXRC.h"
 #include "Text.h"
 
 #include "mathed/MathData.h"
@@ -26,7 +29,10 @@
 
 #include "insets/InsetTabular.h"
 
+#include "support/convert.h"
 #include "support/debug.h"
+#include "support/ExceptionMessage.h"
+#include "support/gettext.h"
 #include "support/lassert.h"
 #include "support/lstrings.h"
 
@@ -39,13 +45,14 @@ namespace lyx {
 
 
 DocIterator::DocIterator()
-	: boundary_(false), inset_(0), buffer_(0)
+	: boundary_(false), inset_(nullptr), buffer_(nullptr)
 {}
 
+
 // We could be able to get rid of this if only every BufferView were
 // associated to a buffer on construction.
 DocIterator::DocIterator(Buffer * buf)
-	: boundary_(false), inset_(0), buffer_(buf)
+	: boundary_(false), inset_(nullptr), buffer_(buf)
 {}
 
 
@@ -56,7 +63,7 @@ DocIterator::DocIterator(Buffer * buf, Inset * inset)
 
 DocIterator doc_iterator_begin(const Buffer * buf0, const Inset * inset0)
 {
-	Buffer * buf = const_cast<Buffer *>(buf0);	
+	Buffer * buf = const_cast<Buffer *>(buf0);
 	Inset * inset = const_cast<Inset *>(inset0);
 	DocIterator dit(buf, inset ? inset : &buf->inset());
 	dit.forwardPos();
@@ -66,7 +73,7 @@ DocIterator doc_iterator_begin(const Buffer * buf0, const Inset * inset0)
 
 DocIterator doc_iterator_end(const Buffer * buf0, const Inset * inset0)
 {
-	Buffer * buf = const_cast<Buffer *>(buf0);	
+	Buffer * buf = const_cast<Buffer *>(buf0);
 	Inset * inset = const_cast<Inset *>(inset0);
 	return DocIterator(buf, inset ? inset : &buf->inset());
 }
@@ -79,7 +86,7 @@ DocIterator DocIterator::clone(Buffer * buffer) const
 	DocIterator dit(buffer);
 	size_t const n = slices_.size();
 	for (size_t i = 0 ; i != n; ++i) {
-		LASSERT(inset, /**/);
+		LBUFERR(inset);
 		dit.push_back(slices_[i]);
 		dit.top().inset_ = inset;
 		if (i + 1 != n)
@@ -92,7 +99,7 @@ DocIterator DocIterator::clone(Buffer * buffer) const
 bool DocIterator::inRegexped() const
 {
 	InsetMath * im = inset().asInsetMath();
-	if (!im) 
+	if (!im)
 		return false;
 	InsetMathHull * hull = im->asHullInset();
 	return hull && hull->getType() == hullRegexp;
@@ -108,13 +115,13 @@ LyXErr & operator<<(LyXErr & os, DocIterator const & it)
 
 Inset * DocIterator::nextInset() const
 {
-	LASSERT(!empty(), return 0);
+	LASSERT(!empty(), return nullptr);
 	if (pos() == lastpos())
-		return 0;
+		return nullptr;
 	if (pos() > lastpos()) {
 		LYXERR0("Should not happen, but it does: pos() = "
 			<< pos() << ", lastpos() = " << lastpos());
-		return 0;
+		return nullptr;
 	}
 	if (inMathed())
 		return nextAtom().nucleus();
@@ -124,15 +131,15 @@ Inset * DocIterator::nextInset() const
 
 Inset * DocIterator::prevInset() const
 {
-	LASSERT(!empty(), return 0);
+	LASSERT(!empty(), return nullptr);
 	if (pos() == 0)
-		return 0;
+		return nullptr;
 	if (inMathed()) {
 		if (cell().empty())
 			// FIXME: this should not happen but it does.
 			// See bug 3189
 			// http://www.lyx.org/trac/ticket/3189
-			return 0;
+			return nullptr;
 		else
 			return prevAtom().nucleus();
 	}
@@ -142,7 +149,7 @@ Inset * DocIterator::prevInset() const
 
 Inset * DocIterator::realInset() const
 {
-	LASSERT(inTexted(), /**/);
+	LASSERT(inTexted(), return nullptr);
 	// if we are in a tabular, we need the cell
 	if (inset().lyxCode() == TABULAR_CODE) {
 		InsetTabular * tabular = inset().asInsetTabular();
@@ -152,6 +159,18 @@ Inset * DocIterator::realInset() const
 }
 
 
+InsetMath & DocIterator::nextMath()
+{
+	return *nextAtom().nucleus();
+}
+
+
+InsetMath & DocIterator::prevMath()
+{
+	return *prevAtom().nucleus();
+}
+
+
 MathAtom & DocIterator::prevAtom() const
 {
 	LASSERT(!empty(), /**/);
@@ -171,23 +190,24 @@ MathAtom & DocIterator::nextAtom() const
 
 Text * DocIterator::text() const
 {
-	LASSERT(!empty(), /**/);
+	LASSERT(!empty(), return nullptr);
 	return top().text();
 }
 
 
 Paragraph & DocIterator::paragraph() const
 {
-	if (!inTexted())
+	if (!inTexted()) {
 		LYXERR0(*this);
-	LASSERT(inTexted(), /**/);
+		LBUFERR(false);
+	}
 	return top().paragraph();
 }
 
 
 Paragraph & DocIterator::innerParagraph() const
 {
-	LASSERT(!empty(), /**/);
+	LBUFERR(!empty());
 	return innerTextSlice().paragraph();
 }
 
@@ -196,26 +216,46 @@ FontSpan DocIterator::locateWord(word_location const loc) const
 {
 	FontSpan f = FontSpan();
 
-	f.first = pos();
-	top().paragraph().locateWord(f.first, f.last, loc);
+	if (!top().text()->empty()) {
+		f.first = pos();
+		top().paragraph().locateWord(f.first, f.last, loc);
+	}
 	return f;
 }
 
-	
+
 CursorSlice const & DocIterator::innerTextSlice() const
 {
-	LASSERT(!empty(), /**/);
+	LBUFERR(!empty());
 	// go up until first non-0 text is hit
 	// (innermost text is 0 in mathed)
 	for (int i = depth() - 1; i >= 0; --i)
 		if (slices_[i].text())
 			return slices_[i];
 
-	// This case is in principe not possible. We _must_
+	// This case is in principle not possible. We _must_
 	// be inside a Text.
-	LASSERT(false, /**/);
-	static CursorSlice dummy;
-	return dummy;
+	LBUFERR(false);
+	// Squash warning
+	static const CursorSlice c;
+	return c;
+}
+
+
+docstring DocIterator::paragraphGotoArgument() const
+{
+	CursorSlice const & s = innerTextSlice();
+	return convert<docstring>(s.paragraph().id()) + ' ' +
+		convert<docstring>(s.pos());
+}
+
+
+DocIterator DocIterator::getInnerText() const
+{
+	DocIterator texted = *this;
+	while (!texted.inTexted())
+		texted.pop_back();
+	return texted;
 }
 
 
@@ -279,7 +319,7 @@ MathData & DocIterator::cell() const
 
 Text * DocIterator::innerText() const
 {
-	LASSERT(!empty(), /**/);
+	LASSERT(!empty(), return nullptr);
 	return innerTextSlice().text();
 }
 
@@ -289,7 +329,25 @@ Inset * DocIterator::innerInsetOfType(int code) const
 	for (int i = depth() - 1; i >= 0; --i)
 		if (slices_[i].inset_->lyxCode() == code)
 			return slices_[i].inset_;
-	return 0;
+	return nullptr;
+}
+
+
+bool DocIterator::posBackward()
+{
+	if (pos() == 0)
+		return false;
+	--pos();
+	return true;
+}
+
+
+bool DocIterator::posForward()
+{
+	if (pos() == lastpos())
+		return false;
+	++pos();
+	return true;
 }
 
 
@@ -309,7 +367,7 @@ void DocIterator::forwardPos()
 	// not at cell/paragraph end?
 	if (tip.pos() != tip.lastpos()) {
 		// move into an inset to the right if possible
-		Inset * n = 0;
+		Inset * n = nullptr;
 		if (inMathed())
 			n = (tip.cell().begin() + tip.pos())->nucleus();
 		else
@@ -428,7 +486,7 @@ void DocIterator::backwardPos()
 		return;
 
 	// move into an inset to the left if possible
-	Inset * n = 0;
+	Inset * n = nullptr;
 	if (inMathed())
 		n = (top().cell().begin() + top().pos())->nucleus();
 	else
@@ -442,6 +500,40 @@ void DocIterator::backwardPos()
 }
 
 
+void DocIterator::backwardPosIgnoreCollapsed()
+{
+	backwardPos();
+	if (inTexted()) {
+		Inset const * ins = realInset();
+		if (ins && !ins->editable()) {
+			pop_back(); // move out of collapsed inset
+		}
+	}
+}
+
+
+#if 0
+// works, but currently not needed
+void DocIterator::backwardInset()
+{
+	backwardPos();
+
+	while (!empty() && !nextInset()) {
+		if (inTexted()) {
+			pos_type const lastp = lastpos();
+			Paragraph const & par = paragraph();
+			pos_type & pos = top().pos();
+			while (pos > 0 && (pos == lastp || !par.isInset(pos)))
+				--pos;
+			if (pos > 0)
+				break;
+		}
+		backwardPos();
+	}
+}
+#endif
+
+
 bool DocIterator::hasPart(DocIterator const & it) const
 {
 	// it can't be a part if it is larger
@@ -453,6 +545,19 @@ bool DocIterator::hasPart(DocIterator const & it) const
 }
 
 
+bool DocIterator::allowSpellCheck() const
+{
+	/// spell check is disabled if the iterator position
+	/// is inside of an inset which disables the spell checker
+	size_t const n = depth();
+	for (size_t i = 0; i < n; ++i) {
+		if (!slices_[i].inset_->allowSpellCheck())
+			return false;
+	}
+	return true;
+}
+
+
 void DocIterator::updateInsets(Inset * inset)
 {
 	// this function re-creates the cache of inset pointers.
@@ -461,7 +566,7 @@ void DocIterator::updateInsets(Inset * inset)
 	size_t const n = slices_.size();
 	slices_.resize(0);
 	for (size_t i = 0 ; i < n; ++i) {
-		LASSERT(inset, /**/);
+		LBUFERR(inset);
 		push_back(dit[i]);
 		top().inset_ = inset;
 		if (i + 1 != n)
@@ -476,7 +581,7 @@ bool DocIterator::fixIfBroken()
 	if (empty())
 		return false;
 
-	// Go through the slice stack from the bottom. 
+	// Go through the slice stack from the bottom.
 	// Check that all coordinates (idx, pit, pos) are correct and
 	// that the inset is the one which is claimed to be there
 	Inset * inset = &slices_[0].inset();
@@ -484,7 +589,7 @@ bool DocIterator::fixIfBroken()
 	size_t n = slices_.size();
 	for (; i != n; ++i) {
 		CursorSlice & cs = slices_[i];
-		if (&cs.inset() != inset) {
+		if (&cs.inset() != inset || ! cs.inset().isActive()) {
 			// the whole slice is wrong, chop off this as well
 			--i;
 			LYXERR(Debug::DEBUG, "fixIfBroken(): inset changed");
@@ -528,6 +633,57 @@ bool DocIterator::fixIfBroken()
 }
 
 
+void DocIterator::sanitize()
+{
+	// keep a copy of the slices
+	vector<CursorSlice> const sl = slices_;
+	slices_.clear();
+	if (buffer_)
+		inset_ = &buffer_->inset();
+	Inset * inset = inset_;
+	// re-add the slices one by one, and adjust the inset pointer.
+	for (size_t i = 0, n = sl.size(); i != n; ++i) {
+		if (inset == nullptr) {
+			// FIXME
+			LYXERR0("Null inset on cursor stack.");
+			fixIfBroken();
+			break;
+		}
+		if (!inset->isActive()) {
+			LYXERR0("Inset found on cursor stack is not active.");
+			fixIfBroken();
+			break;
+		}
+		push_back(sl[i]);
+		top().inset_ = inset;
+		if (fixIfBroken())
+			break;
+		if (i + 1 != n)
+			inset = nextInset();
+	}
+}
+
+
+bool DocIterator::isInside(Inset const * p) const
+{
+	for (CursorSlice const & sl : slices_)
+		if (&sl.inset() == p)
+			return true;
+	return false;
+}
+
+
+void DocIterator::leaveInset(Inset const & inset)
+{
+	for (size_t i = 0; i != slices_.size(); ++i) {
+		if (&slices_[i].inset() == &inset) {
+			resize(i);
+			return;
+		}
+	}
+}
+
+
 int DocIterator::find(MathData const & cell) const
 {
 	for (size_t l = 0; l != slices_.size(); ++l) {
@@ -538,7 +694,7 @@ int DocIterator::find(MathData const & cell) const
 }
 
 
-int DocIterator::find(Inset const * inset) const 
+int DocIterator::find(Inset const * inset) const
 {
 	for (size_t l = 0; l != slices_.size(); ++l) {
 		if (&slices_[l].inset() == inset)
@@ -561,13 +717,13 @@ void DocIterator::cutOff(int above)
 }
 
 
-void DocIterator::append(vector<CursorSlice> const & x) 
+void DocIterator::append(vector<CursorSlice> const & x)
 {
 	slices_.insert(slices_.end(), x.begin(), x.end());
 }
 
 
-void DocIterator::append(DocIterator::idx_type idx, pos_type pos) 
+void DocIterator::append(DocIterator::idx_type idx, pos_type pos)
 {
 	slices_.push_back(CursorSlice());
 	top().idx() = idx;
@@ -575,6 +731,73 @@ void DocIterator::append(DocIterator::idx_type idx, pos_type pos)
 }
 
 
+docstring DocIterator::getPossibleLabel() const
+{
+	return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
+}
+
+
+Encoding const * DocIterator::getEncoding() const
+{
+	if (empty())
+		return nullptr;
+
+	BufferParams const & bp = buffer()->params();
+	if (bp.useNonTeXFonts)
+		return encodings.fromLyXName("utf8-plain");
+
+	// With platex, we don't switch encodings (not even if forced).
+	if (bp.encoding().package() == Encoding::japanese)
+		return &bp.encoding();
+
+	CursorSlice const & sl = innerTextSlice();
+	Text const & text = *sl.text();
+	Language const * lang =
+		text.getPar(sl.pit()).getFont(bp, sl.pos(), text.outerFont(sl.pit())).language();
+	// If we have a custom encoding for the buffer, we don't switch
+	// encodings (see output_latex::switchEncoding())
+	bool const customenc = bp.inputenc != "auto-legacy" && bp.inputenc != "auto-legacy-plain";
+	Encoding const * enc = customenc ? &bp.encoding() : lang->encoding();
+
+	// Some insets force specific encodings sometimes (e.g., listings in
+	// multibyte context forces singlebyte).
+	if (inset().forcedEncoding(enc, encodings.fromLyXName("iso8859-1"))) {
+		// Get the language outside the inset
+		size_t const n = depth();
+		for (size_t i = 0; i < n; ++i) {
+			Text const & otext = *slices_[i].text();
+			Language const * olang =
+					otext.getPar(slices_[i].pit()).getFont(bp, slices_[i].pos(),
+									       otext.outerFont(slices_[i].pit())).language();
+			Encoding const * oenc = olang->encoding();
+			if (oenc->name() != "inherit")
+				return inset().forcedEncoding(enc, oenc);
+		}
+		// Fall back to buffer encoding if no outer lang was found.
+		return inset().forcedEncoding(enc, &bp.encoding());
+	}
+
+	// Inherited encoding (latex_language) is determined by the context
+	// Look for the first outer encoding that is not itself "inherit"
+	if (lang->encoding()->name() == "inherit") {
+		size_t const n = depth();
+		for (size_t i = 0; i < n; ++i) {
+			Text const & otext = *slices_[i].text();
+			Language const * olang =
+					otext.getPar(slices_[i].pit()).getFont(bp, slices_[i].pos(),
+									       otext.outerFont(slices_[i].pit())).language();
+			// Again, if we have a custom encoding, this is used
+			// instead of the language's.
+			Encoding const * oenc = customenc ? &bp.encoding() : olang->encoding();
+			if (olang->encoding()->name() != "inherit")
+				return oenc;
+		}
+	}
+
+	return enc;
+}
+
+
 ostream & operator<<(ostream & os, DocIterator const & dit)
 {
 	for (size_t i = 0, n = dit.depth(); i != n; ++i)
@@ -585,39 +808,19 @@ ostream & operator<<(ostream & os, DocIterator const & dit)
 
 ///////////////////////////////////////////////////////
 
-StableDocIterator::StableDocIterator(DocIterator const & dit)
+StableDocIterator::StableDocIterator(DocIterator const & dit) :
+	data_(dit.internalData())
 {
-	data_ = dit.internalData();
 	for (size_t i = 0, n = data_.size(); i != n; ++i)
-		data_[i].inset_ = 0;
+		data_[i].inset_ = nullptr;
 }
 
 
 DocIterator StableDocIterator::asDocIterator(Buffer * buf) const
 {
-	// this function re-creates the cache of inset pointers
-	//lyxerr << "converting:\n" << *this << endl;
-	Inset * inset = &buf->inset();
-	DocIterator dit = DocIterator(buf, inset);
-	for (size_t i = 0, n = data_.size(); i != n; ++i) {
-		if (inset == 0) {
-			// FIXME
-			LYXERR0(" Should not happen, but does e.g. after "
-				"C-n C-l C-z S-C-z\n"
-				<< " or when a Buffer has been concurrently edited by two views"
-				<< '\n' << "dit: " << dit << '\n'
-				<< " lastpos: " << dit.lastpos());
-			dit.fixIfBroken();
-			break;
-		}
-		dit.push_back(data_[i]);
-		dit.top().inset_ = inset;
-		if (dit.fixIfBroken())
-			break;
-		if (i + 1 != n)
-			inset = dit.nextInset();
-	}
-	//lyxerr << "convert:\n" << *this << " to:\n" << dit << endl;
+	DocIterator dit(buf);
+	dit.slices_ = data_;
+	dit.sanitize();
 	return dit;
 }