namespace lyx {
+using std::abs;
using std::endl;
using std::string;
+using std::max;
+
+/*
+ * Class Change has a changetime field that specifies the exact time at which
+ * a specific change was made. The change time is used as a guidance for the
+ * user while editing his document. Presently, it is not considered for LaTeX
+ * export.
+ * When merging two adjacent changes, the changetime is not considered,
+ * only the equality of the change type and author is checked (in method
+ * isSimilarTo(...)). If two changes are in fact merged (in method merge()),
+ * the later change time is preserved.
+ */
+
+bool Change::isSimilarTo(Change const & change)
+{
+ if (type != change.type) {
+ return false;
+ }
+
+ if (type == Change::UNCHANGED) {
+ return true;
+ }
+
+ return author == change.author;
+}
bool operator==(Change const & l, Change const & r)
{
- return l.type == r.type && l.author == r.author
- && l.changetime == r.changetime;
+ return l.type == r.type &&
+ l.author == r.author &&
+ l.changetime == r.changetime;
}
ChangeTable::iterator it = table_.begin();
for (; it != table_.end(); ) {
- // find super change, check for equal types, and do nothing
- if (it->range.contains(newRange) && it->change.type == change.type) {
- return;
- }
-
// current change starts like or follows new change
if (it->range.start >= start) {
break;
return it->change;
}
- BOOST_ASSERT(false && "missing changes for pos");
return Change(Change::UNCHANGED);
}
ChangeTable::const_iterator const itend = table_.end();
for (; it != itend; ++it) {
- if (lyxerr.debugging(Debug::CHANGES)) {
- lyxerr[Debug::CHANGES] << "Looking for " << start << ","
- << end << " in " << it->range.start << ","
- << it->range.end << "of type " << it->change.type << endl;
- }
-
- if (it->range.intersects(Range(start, end))
- && it->change.type != Change::UNCHANGED) {
+ if (it->range.intersects(Range(start, end))) {
if (lyxerr.debugging(Debug::CHANGES)) {
- lyxerr[Debug::CHANGES] << "Found intersection of "
- << start << "," << end << " with "
- << it->range.start << "," << it->range.end
- << " of type " << it->change.type << endl;
+ lyxerr[Debug::CHANGES] << "found intersection of range ("
+ << start << ", " << end << ") with ("
+ << it->range.start << ", " << it->range.end
+ << ") of type " << it->change.type << endl;
}
return true;
}
}
-
return false;
}
void Changes::merge()
{
- if (lyxerr.debugging(Debug::CHANGES))
- lyxerr[Debug::CHANGES] << "Starting merge" << endl;
+ if (lyxerr.debugging(Debug::CHANGES)) {
+ lyxerr[Debug::CHANGES] << "merging changes..." << endl;
+ }
ChangeTable::iterator it = table_.begin();
while (it != table_.end()) {
if (lyxerr.debugging(Debug::CHANGES)) {
- lyxerr[Debug::CHANGES] << "Range of type " << it->change.type << " is "
- << it->range.start << "," << it->range.end << endl;
+ lyxerr[Debug::CHANGES] << " found change of type " << it->change.type
+ << " and range (" << it->range.start << ", " << it->range.end
+ << ")" << endl;
}
if (it->range.start == it->range.end) {
if (lyxerr.debugging(Debug::CHANGES)) {
- lyxerr[Debug::CHANGES] << "Removing empty range for pos "
+ lyxerr[Debug::CHANGES] << " removing empty range for pos "
<< it->range.start << endl;
}
if (it + 1 == table_.end())
break;
- if (it->change == (it + 1)->change) {
+ if (it->change.isSimilarTo((it + 1)->change) && it->range.end == (it + 1)->range.start) {
if (lyxerr.debugging(Debug::CHANGES)) {
- lyxerr[Debug::CHANGES] << "Merging equal ranges "
- << it->range.start << "," << it->range.end
- << " and " << (it + 1)->range.start << ","
- << (it + 1)->range.end << endl;
+ lyxerr[Debug::CHANGES] << " merging ranges (" << it->range.start << ", "
+ << it->range.end << ") and (" << (it + 1)->range.start << ", "
+ << (it + 1)->range.end << ")" << endl;
}
-
(it + 1)->range.start = it->range.start;
+ (it + 1)->change.changetime = max(it->change.changetime,
+ (it + 1)->change.changetime);
table_.erase(it);
// start again
it = table_.begin();
++it;
}
-
- lyxerr[Debug::CHANGES] << "Merge ended" << endl;
}
int Changes::latexMarkChange(odocstream & os,
- Change::Type const old, Change::Type const change,
+ Change::Type const oldChangeType, Change::Type const changeType,
bool const & output)
{
- if (!output || old == change)
+ if (!output || oldChangeType == changeType)
return 0;
static docstring const start(from_ascii("\\changestart{}"));
int column = 0;
- if (old == Change::DELETED) {
+ if (oldChangeType == Change::DELETED) {
os << soff;
column += soff.length();
}
- switch (change) {
+ switch (changeType) {
case Change::UNCHANGED:
os << end;
column += end.length();
break;
case Change::DELETED:
- if (old == Change::UNCHANGED) {
+ if (oldChangeType == Change::UNCHANGED) {
os << start;
column += start.length();
}
break;
case Change::INSERTED:
- if (old == Change::UNCHANGED) {
+ if (oldChangeType == Change::UNCHANGED) {
os << start;
column += start.length();
}
void Changes::lyxMarkChange(std::ostream & os, int & column,
- time_type const curtime,
Change const & old, Change const & change)
{
if (old == change)
break;
case Change::DELETED: {
- time_type t = change.changetime;
- if (!t)
- t = curtime;
os << "\n\\change_deleted " << change.author
- << " " << t << "\n";
-
+ << " " << change.changetime << "\n";
break;
}
- case Change::INSERTED: {
- time_type t = change.changetime;
- if (!t)
- t = curtime;
+ case Change::INSERTED: {
os << "\n\\change_inserted " << change.author
- << " " << t << "\n";
+ << " " << change.changetime << "\n";
break;
- }
+ }
}
}