#include "Compare.h"
+#include "Author.h"
#include "BufferParams.h"
#include "Changes.h"
+#include "Font.h"
#include "insets/InsetText.h"
-#include "support/lassert.h"
+#include "support/lassert.h"
#include "support/qstring_helpers.h"
#include <boost/next_prior.hpp>
*/
class DocRange {
public:
- DocRange(DocIterator from_, DocIterator to_)
+ DocRange(DocIterator const & from_, DocIterator const & to_)
: from(from_), to(to_)
{}
class DocPair {
public:
- DocPair() {}
+ DocPair()
+ {}
DocPair(DocIterator o_, DocIterator n_)
: o(o_), n(n_)
{}
- bool operator!=(DocPair const & rhs) {
+ bool operator!=(DocPair const & rhs)
+ {
// this might not be intuitive but correct for our purpose
return o != rhs.o && n != rhs.n;
}
-
+
DocPair & operator++()
{
///
DocIterator n;
};
-
+
/**
* A pair of two DocRanges.
*/
class DocRangePair {
public:
- DocRangePair(DocRange o_, DocRange n_)
+ DocRangePair(DocRange const & o_, DocRange const & n_)
: o(o_), n(n_)
{}
-
- DocRangePair(DocPair from, DocPair to)
+
+ DocRangePair(DocPair const & from, DocPair const & to)
: o(from.o, to.o), n(from.n, to.n)
{}
{}
/// Returns the from pair
- DocPair from() const { return DocPair(o.from, n.from); }
+ DocPair from() const
+ {
+ return DocPair(o.from, n.from);
+ }
/// Returns the to pair
- DocPair to() const { return DocPair(o.to, n.to); }
+ DocPair to() const
+ {
+ return DocPair(o.to, n.to);
+ }
DocRange o;
DocRange n;
template<class T>
class compl_vector {
public:
- compl_vector() {}
+ compl_vector()
+ {}
void reset(T const & def)
{
class Compare::Impl {
public:
///
- Impl(Compare const & compare)
- : abort_(false), compare_(compare), recursion_level_(0), D_(0)
+ Impl(Compare const & compare)
+ : abort_(false), N_(0), M_(0), offset_reverse_diagonal_(0),
+ odd_offset_(0), compare_(compare),
+ old_buf_(0), new_buf_(0), dest_buf_(0), dest_pars_(0),
+ recursion_level_(0), nested_inset_level_(0), D_(0)
{}
///
- ~Impl() {}
+ ~Impl()
+ {}
- // Algorithm to find the shortest edit string. This algorithm
+ // Algorithm to find the shortest edit string. This algorithm
// only needs a linear amount of memory (linear with the sum
// of the number of characters in the two paragraph-lists).
bool diff(Buffer const * new_buf, Buffer const * old_buf,
bool abort_;
///
- QString status() {
+ QString status()
+ {
QString status;
status += toqstr("recursion level:") + " " + QString::number(recursion_level_)
+ " " + toqstr("differences:") + " " + QString::number(D_);
/// the forward and backward path.
SnakeResult retrieveMiddleSnake(int k, int D, Direction direction,
DocPair & middle_snake);
-
- /// Find the the furthest reaching D-path (number of horizontal
+
+ /// Find the furthest reaching D-path (number of horizontal
/// and vertical steps; differences between the old and new
/// document) in the k-diagonal (vertical minus horizontal steps).
void furthestDpathKdiagonal(int D, int k,
/// Is there overlap between the forward and backward path
bool overlap(int k, int D);
-
+
/// This function is called recursively by a divide and conquer
/// algorithm. Each time, the string is divided into two split
/// around the middle snake.
void diff_i(DocRangePair const & rp);
- /// Processes the splitted chunks. It either adds them as deleted,
+ /// Processes the split chunks. It either adds them as deleted,
/// as added, or call diff_i for further processing.
void diffPart(DocRangePair const & rp);
- /// Runs the algorithm for the inset located at /c it and /c it_n
+ /// Runs the algorithm for the inset located at /c it and /c it_n
/// and adds the result to /c pars.
void diffInset(Inset * inset, DocPair const & p);
/// Writes the range to the destination buffer
void writeToDestBuffer(DocRange const & range,
Change::Type type = Change::UNCHANGED);
-
+
/// Writes the paragraph list to the destination buffer
void writeToDestBuffer(ParagraphList const & copy_pars) const;
compl_vector<DocIterator> nrp;
compl_vector<DocIterator> ors;
compl_vector<DocIterator> nrs;
-
+
/// The number of differences in the path the algorithm
/// is currently processing.
int D_;
if (!dest_buffer || !new_buffer || !old_buffer)
return;
- // Copy the buffer params to the new buffer
+ // Copy the buffer params to the destination buffer
dest_buffer->params() = options_.settings_from_new
? new_buffer->params() : old_buffer->params();
-
+
+ // Copy extra authors to the destination buffer
+ AuthorList const & extra_authors = options_.settings_from_new ?
+ old_buffer->params().authors() : new_buffer->params().authors();
+ AuthorList::Authors::const_iterator it = extra_authors.begin();
+ for (; it != extra_authors.end(); ++it)
+ dest_buffer->params().authors().record(*it);
+
doStatusMessage();
// do the real work
if (!doCompare())
return;
-
+
finished(pimpl_->abort_);
return;
}
if (i_o->lyxCode() != i_n->lyxCode())
return false;
- // Editable insets are assumed to be the same as they are of the
+ // Editable insets are assumed to be the same as they are of the
// same type. If we later on decide that we insert them in the
// document as being unchanged, we will run the algorithm on the
// contents of the two insets.
}
-static bool equal(DocIterator & o, DocIterator & n) {
+static bool equal(DocIterator & o, DocIterator & n)
+{
+ // Explicitly check for this, so we won't call
+ // Paragraph::getChar for the last pos.
+ bool const o_lastpos = o.pos() == o.lastpos();
+ bool const n_lastpos = n.pos() == n.lastpos();
+ if (o_lastpos || n_lastpos)
+ return o_lastpos && n_lastpos;
+
Paragraph const & old_par = o.text()->getPar(o.pit());
Paragraph const & new_par = n.text()->getPar(n.pit());
if (i_o && i_n)
return equal(i_o, i_n);
- }
+ }
Font fo = old_par.getFontSettings(o.buffer()->params(), o.pos());
Font fn = new_par.getFontSettings(n.buffer()->params(), n.pos());
}
-/// Traverses a snake in a certain direction. p points to a
+/// Traverses a snake in a certain direction. p points to a
/// position in the old and new file and they are synchronously
/// moved along the snake. The function returns true if a snake
/// was found.
Direction direction)
{
bool ret = false;
- DocPair const & p_end =
+ DocPair const & p_end =
direction == Forward ? range.to() : range.from();
while (p != p_end) {
// Where do we take the step from ?
int const kk = vertical_step ? k + 1 : k - 1;
DocPair p(op[kk], np[kk]);
+ DocPair const s(os[kk], ns[kk]);
// If D==0 we simulate a vertical step from (0,-1) by doing nothing.
if (D != 0) {
step(p.o, rp.o.to, direction);
else if (!vertical_step && direction == Backward)
step(p.o, rp.o.from, direction);
- }
-
+ }
+
// Traverse snake
if (traverseSnake(p, rp, direction)) {
// Record last snake
ns[k] = p.n;
} else {
// Copy last snake from the previous step
- os[k] = os[kk];
- ns[k] = ns[kk];
+ os[k] = s.o;
+ ns[k] = s.n;
}
//Record new position
if (os[k].empty() && os_r[kk].empty()) {
// No, there is no snake at all, in which case
// the length of the shortest edit script is M+N.
- LASSERT(2 * D - odd_offset_ == M_ + N_, /**/);
+ LATTEST(2 * D - odd_offset_ == M_ + N_);
return NoSnake;
- }
-
+ }
+
if (os[k].empty()) {
// Yes, but there is only 1 snake and we found it in the
// reverse path.
// different characters in the old and new chunk.
for (int D = 0; D <= D_max; ++D) {
// to be used in the status messages
- D_ = D;
+ D_ = D;
// Forward and reverse paths
for (int f = 0; f < 2; ++f) {
Direction direction = f == 0 ? Forward : Backward;
// Diagonals between -D and D can be reached by a D-path
- for (int k = -D; k <= D; k += 2) {
+ for (int k = -D; k <= D; k += 2) {
// Find the furthest reaching D-path on this diagonal
furthestDpathKdiagonal(D, k, rp, direction);
traverseSnake(from, rp, Forward);
DocRangePair const snake(rp.from(), from);
processSnake(snake);
-
+
// Start the recursive algorithm
- diff_i(rp);
+ DocRangePair rp_new(from, rp.to());
+ if (!rp_new.o.empty() || !rp_new.n.empty())
+ diff_i(rp_new);
for (pit_type p = 0; p < (pit_type)dest_pars_->size(); ++p) {
(*dest_pars_)[p].setBuffer(const_cast<Buffer &>(*dest_buf));
DocPair first_part_end = middle_snake;
traverseSnake(first_part_end, rp, Backward);
DocRangePair first_part(rp.from(), first_part_end);
-
+
DocPair second_part_begin = middle_snake;
traverseSnake(second_part_begin, rp, Forward);
DocRangePair second_part(second_part_begin, rp.to());
-
+
// Split the string in three parts:
// 1. in front of the snake
diffPart(first_part);
// is an empty string and we write the other one to the buffer.
if (!rp.o.empty() && !rp.n.empty())
diff_i(rp);
-
+
else if (!rp.o.empty())
writeToDestBuffer(rp.o, Change::DELETED);
ParagraphList * backup_dest_pars = dest_pars_;
dest_pars_ = &inset->asInsetText()->text().paragraphs();
dest_pars_->clear();
-
+
++nested_inset_level_;
diff_i(rp);
--nested_inset_level_;
pit_type const pit = it.o.pit() - rp.o.from.pit();
pos_type const pos = pit ? it.o.pos() : it.o.pos() - rp.o.from.pos();
inset = pars[pit].getInset(pos);
- LASSERT(inset, /**/);
+ LASSERT(inset, continue);
diffInset(inset, it);
}
}
projects / lyx.git / blobdiff