#include "insets/InsetText.h"
#include "support/lassert.h"
+#include "support/qstring_helpers.h"
#include <boost/next_prior.hpp>
-#include <cmath>
-
using namespace std;
using namespace lyx::support;
public:
///
Impl(Compare const & compare)
- : abort_(false), compare_(compare)
+ : abort_(false), compare_(compare), recursion_level_(0), D_(0)
{}
///
/// Set to true to cancel the algorithm
bool abort_;
+ ///
+ QString status() {
+ QString status;
+ status += toqstr("recursion level:") + " " + QString::number(recursion_level_)
+ + " " + toqstr("differences:") + " " + QString::number(D_);
+ return status;
+ }
+
private:
/// Finds the middle snake and returns the length of the
/// shortest edit script.
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_;
};
/////////////////////////////////////////////////////////////////////
: new_buffer(new_buf), old_buffer(old_buf), dest_buffer(dest_buf),
options_(options), pimpl_(new Impl(*this))
{
+ connect(&status_timer_, SIGNAL(timeout()),
+ this, SLOT(doStatusMessage()));
+ status_timer_.start(1000);
+}
+
+
+void Compare::doStatusMessage()
+{
+ statusMessage(pimpl_->status());
}
dest_buffer->params() = options_.settings_from_new
? new_buffer->params() : old_buffer->params();
+ doStatusMessage();
+
// do the real work
if (!doCompare())
return;
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());
// 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) {
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
ors.reset(DocIterator());
nrs.reset(DocIterator());
+ // In the formula below, the "+ 1" ensures we round like ceil()
+ int const D_max = (M_ + N_ + 1)/2;
// D is the number of horizontal and vertical steps, i.e.
// different characters in the old and new chunk.
- int const D_max = ceil(((double)M_ + N_)/2);
for (int D = 0; D <= D_max; ++D) {
+ // to be used in the status messages
+ D_ = D;
// Forward and reverse paths
for (int f = 0; f < 2; ++f) {
return 2 * D - odd_offset_;
}
}
+ if (abort_)
+ return 0;
}
}
}
void Compare::Impl::diff_i(DocRangePair const & rp)
{
+ if (abort_)
+ return;
+
// The middle snake
DocPair middle_snake;